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![Long Li](/assets/img/avatar_default.png)
SMB server will not sign data transferred through RDMA read/write. When signing is used, it's a good idea to have all the data signed. In this case, use RDMA send/recv for all data transfers. This will degrade performance as this is not generally configured in RDMA environemnt. So warn the user on signing and RDMA send/recv. Signed-off-by: Long Li <longli@microsoft.com> Acked-by: Ronnie Sahlberg <lsahlber@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Steve French <smfrench@gmail.com>
6489 lines
190 KiB
C
6489 lines
190 KiB
C
/*
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* fs/cifs/cifssmb.c
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*
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* Copyright (C) International Business Machines Corp., 2002,2010
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* Contains the routines for constructing the SMB PDUs themselves
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* SMB/CIFS PDU handling routines here - except for leftovers in connect.c */
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/* These are mostly routines that operate on a pathname, or on a tree id */
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/* (mounted volume), but there are eight handle based routines which must be */
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/* treated slightly differently for reconnection purposes since we never */
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/* want to reuse a stale file handle and only the caller knows the file info */
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#include <linux/fs.h>
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#include <linux/kernel.h>
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#include <linux/vfs.h>
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#include <linux/slab.h>
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#include <linux/posix_acl_xattr.h>
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#include <linux/pagemap.h>
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#include <linux/swap.h>
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#include <linux/task_io_accounting_ops.h>
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#include <linux/uaccess.h>
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsacl.h"
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#include "cifsproto.h"
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#include "cifs_unicode.h"
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#include "cifs_debug.h"
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#include "fscache.h"
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#include "smbdirect.h"
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#ifdef CONFIG_CIFS_POSIX
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static struct {
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int index;
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char *name;
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} protocols[] = {
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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{LANMAN_PROT, "\2LM1.2X002"},
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{LANMAN2_PROT, "\2LANMAN2.1"},
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#endif /* weak password hashing for legacy clients */
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{CIFS_PROT, "\2NT LM 0.12"},
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{POSIX_PROT, "\2POSIX 2"},
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{BAD_PROT, "\2"}
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};
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#else
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static struct {
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int index;
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char *name;
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} protocols[] = {
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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{LANMAN_PROT, "\2LM1.2X002"},
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{LANMAN2_PROT, "\2LANMAN2.1"},
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#endif /* weak password hashing for legacy clients */
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{CIFS_PROT, "\2NT LM 0.12"},
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{BAD_PROT, "\2"}
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};
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#endif
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/* define the number of elements in the cifs dialect array */
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#ifdef CONFIG_CIFS_POSIX
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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#define CIFS_NUM_PROT 4
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#else
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#define CIFS_NUM_PROT 2
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#endif /* CIFS_WEAK_PW_HASH */
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#else /* not posix */
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#ifdef CONFIG_CIFS_WEAK_PW_HASH
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#define CIFS_NUM_PROT 3
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#else
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#define CIFS_NUM_PROT 1
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#endif /* CONFIG_CIFS_WEAK_PW_HASH */
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#endif /* CIFS_POSIX */
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/*
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* Mark as invalid, all open files on tree connections since they
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* were closed when session to server was lost.
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*/
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void
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cifs_mark_open_files_invalid(struct cifs_tcon *tcon)
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{
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struct cifsFileInfo *open_file = NULL;
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struct list_head *tmp;
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struct list_head *tmp1;
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/* list all files open on tree connection and mark them invalid */
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spin_lock(&tcon->open_file_lock);
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list_for_each_safe(tmp, tmp1, &tcon->openFileList) {
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open_file = list_entry(tmp, struct cifsFileInfo, tlist);
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open_file->invalidHandle = true;
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open_file->oplock_break_cancelled = true;
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}
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spin_unlock(&tcon->open_file_lock);
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/*
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* BB Add call to invalidate_inodes(sb) for all superblocks mounted
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* to this tcon.
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*/
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}
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/* reconnect the socket, tcon, and smb session if needed */
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static int
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cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
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{
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int rc;
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struct cifs_ses *ses;
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struct TCP_Server_Info *server;
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struct nls_table *nls_codepage;
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/*
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* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for
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* tcp and smb session status done differently for those three - in the
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* calling routine
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*/
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if (!tcon)
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return 0;
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ses = tcon->ses;
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server = ses->server;
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/*
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* only tree disconnect, open, and write, (and ulogoff which does not
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* have tcon) are allowed as we start force umount
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*/
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if (tcon->tidStatus == CifsExiting) {
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if (smb_command != SMB_COM_WRITE_ANDX &&
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smb_command != SMB_COM_OPEN_ANDX &&
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smb_command != SMB_COM_TREE_DISCONNECT) {
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cifs_dbg(FYI, "can not send cmd %d while umounting\n",
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smb_command);
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return -ENODEV;
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}
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}
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/*
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* Give demultiplex thread up to 10 seconds to reconnect, should be
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* greater than cifs socket timeout which is 7 seconds
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*/
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while (server->tcpStatus == CifsNeedReconnect) {
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wait_event_interruptible_timeout(server->response_q,
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(server->tcpStatus != CifsNeedReconnect), 10 * HZ);
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/* are we still trying to reconnect? */
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if (server->tcpStatus != CifsNeedReconnect)
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break;
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/*
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* on "soft" mounts we wait once. Hard mounts keep
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* retrying until process is killed or server comes
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* back on-line
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*/
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if (!tcon->retry) {
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cifs_dbg(FYI, "gave up waiting on reconnect in smb_init\n");
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return -EHOSTDOWN;
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}
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}
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if (!ses->need_reconnect && !tcon->need_reconnect)
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return 0;
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nls_codepage = load_nls_default();
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/*
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* need to prevent multiple threads trying to simultaneously
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* reconnect the same SMB session
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*/
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mutex_lock(&ses->session_mutex);
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/*
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* Recheck after acquire mutex. If another thread is negotiating
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* and the server never sends an answer the socket will be closed
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* and tcpStatus set to reconnect.
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*/
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if (server->tcpStatus == CifsNeedReconnect) {
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rc = -EHOSTDOWN;
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mutex_unlock(&ses->session_mutex);
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goto out;
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}
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rc = cifs_negotiate_protocol(0, ses);
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if (rc == 0 && ses->need_reconnect)
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rc = cifs_setup_session(0, ses, nls_codepage);
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/* do we need to reconnect tcon? */
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if (rc || !tcon->need_reconnect) {
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mutex_unlock(&ses->session_mutex);
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goto out;
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}
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cifs_mark_open_files_invalid(tcon);
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rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage);
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mutex_unlock(&ses->session_mutex);
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cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
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if (rc) {
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printk_once(KERN_WARNING "reconnect tcon failed rc = %d\n", rc);
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goto out;
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}
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atomic_inc(&tconInfoReconnectCount);
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/* tell server Unix caps we support */
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if (ses->capabilities & CAP_UNIX)
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reset_cifs_unix_caps(0, tcon, NULL, NULL);
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/*
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* Removed call to reopen open files here. It is safer (and faster) to
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* reopen files one at a time as needed in read and write.
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*
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* FIXME: what about file locks? don't we need to reclaim them ASAP?
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*/
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out:
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/*
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* Check if handle based operation so we know whether we can continue
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* or not without returning to caller to reset file handle
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*/
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switch (smb_command) {
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case SMB_COM_READ_ANDX:
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case SMB_COM_WRITE_ANDX:
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case SMB_COM_CLOSE:
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case SMB_COM_FIND_CLOSE2:
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case SMB_COM_LOCKING_ANDX:
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rc = -EAGAIN;
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}
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unload_nls(nls_codepage);
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return rc;
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}
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/* Allocate and return pointer to an SMB request buffer, and set basic
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SMB information in the SMB header. If the return code is zero, this
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function must have filled in request_buf pointer */
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static int
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small_smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
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void **request_buf)
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{
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int rc;
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rc = cifs_reconnect_tcon(tcon, smb_command);
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if (rc)
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return rc;
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*request_buf = cifs_small_buf_get();
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if (*request_buf == NULL) {
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/* BB should we add a retry in here if not a writepage? */
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return -ENOMEM;
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}
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header_assemble((struct smb_hdr *) *request_buf, smb_command,
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tcon, wct);
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if (tcon != NULL)
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cifs_stats_inc(&tcon->num_smbs_sent);
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return 0;
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}
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int
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small_smb_init_no_tc(const int smb_command, const int wct,
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struct cifs_ses *ses, void **request_buf)
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{
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int rc;
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struct smb_hdr *buffer;
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rc = small_smb_init(smb_command, wct, NULL, request_buf);
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if (rc)
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return rc;
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buffer = (struct smb_hdr *)*request_buf;
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buffer->Mid = get_next_mid(ses->server);
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if (ses->capabilities & CAP_UNICODE)
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buffer->Flags2 |= SMBFLG2_UNICODE;
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if (ses->capabilities & CAP_STATUS32)
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buffer->Flags2 |= SMBFLG2_ERR_STATUS;
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/* uid, tid can stay at zero as set in header assemble */
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/* BB add support for turning on the signing when
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this function is used after 1st of session setup requests */
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return rc;
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}
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/* If the return code is zero, this function must fill in request_buf pointer */
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static int
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__smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
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void **request_buf, void **response_buf)
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{
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*request_buf = cifs_buf_get();
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if (*request_buf == NULL) {
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/* BB should we add a retry in here if not a writepage? */
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return -ENOMEM;
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}
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/* Although the original thought was we needed the response buf for */
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/* potential retries of smb operations it turns out we can determine */
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/* from the mid flags when the request buffer can be resent without */
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/* having to use a second distinct buffer for the response */
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if (response_buf)
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*response_buf = *request_buf;
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header_assemble((struct smb_hdr *) *request_buf, smb_command, tcon,
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wct);
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if (tcon != NULL)
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cifs_stats_inc(&tcon->num_smbs_sent);
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return 0;
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}
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/* If the return code is zero, this function must fill in request_buf pointer */
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static int
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smb_init(int smb_command, int wct, struct cifs_tcon *tcon,
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void **request_buf, void **response_buf)
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{
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int rc;
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rc = cifs_reconnect_tcon(tcon, smb_command);
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if (rc)
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return rc;
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return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
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}
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static int
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smb_init_no_reconnect(int smb_command, int wct, struct cifs_tcon *tcon,
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void **request_buf, void **response_buf)
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{
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if (tcon->ses->need_reconnect || tcon->need_reconnect)
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return -EHOSTDOWN;
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return __smb_init(smb_command, wct, tcon, request_buf, response_buf);
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}
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static int validate_t2(struct smb_t2_rsp *pSMB)
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{
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unsigned int total_size;
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/* check for plausible wct */
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if (pSMB->hdr.WordCount < 10)
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goto vt2_err;
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/* check for parm and data offset going beyond end of smb */
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if (get_unaligned_le16(&pSMB->t2_rsp.ParameterOffset) > 1024 ||
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get_unaligned_le16(&pSMB->t2_rsp.DataOffset) > 1024)
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goto vt2_err;
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total_size = get_unaligned_le16(&pSMB->t2_rsp.ParameterCount);
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if (total_size >= 512)
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goto vt2_err;
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/* check that bcc is at least as big as parms + data, and that it is
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* less than negotiated smb buffer
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*/
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total_size += get_unaligned_le16(&pSMB->t2_rsp.DataCount);
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if (total_size > get_bcc(&pSMB->hdr) ||
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total_size >= CIFSMaxBufSize + MAX_CIFS_HDR_SIZE)
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goto vt2_err;
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return 0;
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vt2_err:
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cifs_dump_mem("Invalid transact2 SMB: ", (char *)pSMB,
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sizeof(struct smb_t2_rsp) + 16);
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return -EINVAL;
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}
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static int
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decode_ext_sec_blob(struct cifs_ses *ses, NEGOTIATE_RSP *pSMBr)
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{
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int rc = 0;
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u16 count;
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char *guid = pSMBr->u.extended_response.GUID;
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struct TCP_Server_Info *server = ses->server;
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count = get_bcc(&pSMBr->hdr);
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if (count < SMB1_CLIENT_GUID_SIZE)
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return -EIO;
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spin_lock(&cifs_tcp_ses_lock);
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if (server->srv_count > 1) {
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spin_unlock(&cifs_tcp_ses_lock);
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if (memcmp(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE) != 0) {
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cifs_dbg(FYI, "server UID changed\n");
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memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
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}
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} else {
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spin_unlock(&cifs_tcp_ses_lock);
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memcpy(server->server_GUID, guid, SMB1_CLIENT_GUID_SIZE);
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}
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if (count == SMB1_CLIENT_GUID_SIZE) {
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server->sec_ntlmssp = true;
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} else {
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count -= SMB1_CLIENT_GUID_SIZE;
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rc = decode_negTokenInit(
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pSMBr->u.extended_response.SecurityBlob, count, server);
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if (rc != 1)
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return -EINVAL;
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}
|
|
|
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return 0;
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}
|
|
|
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int
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cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required)
|
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{
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bool srv_sign_required = server->sec_mode & server->vals->signing_required;
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bool srv_sign_enabled = server->sec_mode & server->vals->signing_enabled;
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bool mnt_sign_enabled = global_secflags & CIFSSEC_MAY_SIGN;
|
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|
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/*
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* Is signing required by mnt options? If not then check
|
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* global_secflags to see if it is there.
|
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*/
|
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if (!mnt_sign_required)
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mnt_sign_required = ((global_secflags & CIFSSEC_MUST_SIGN) ==
|
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CIFSSEC_MUST_SIGN);
|
|
|
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/*
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* If signing is required then it's automatically enabled too,
|
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* otherwise, check to see if the secflags allow it.
|
|
*/
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mnt_sign_enabled = mnt_sign_required ? mnt_sign_required :
|
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(global_secflags & CIFSSEC_MAY_SIGN);
|
|
|
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/* If server requires signing, does client allow it? */
|
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if (srv_sign_required) {
|
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if (!mnt_sign_enabled) {
|
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cifs_dbg(VFS, "Server requires signing, but it's disabled in SecurityFlags!");
|
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return -ENOTSUPP;
|
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}
|
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server->sign = true;
|
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}
|
|
|
|
/* If client requires signing, does server allow it? */
|
|
if (mnt_sign_required) {
|
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if (!srv_sign_enabled) {
|
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cifs_dbg(VFS, "Server does not support signing!");
|
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return -ENOTSUPP;
|
|
}
|
|
server->sign = true;
|
|
}
|
|
|
|
if (cifs_rdma_enabled(server) && server->sign)
|
|
cifs_dbg(VFS, "Signing is enabled, and RDMA read/write will be disabled");
|
|
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_WEAK_PW_HASH
|
|
static int
|
|
decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
|
|
{
|
|
__s16 tmp;
|
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struct lanman_neg_rsp *rsp = (struct lanman_neg_rsp *)pSMBr;
|
|
|
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if (server->dialect != LANMAN_PROT && server->dialect != LANMAN2_PROT)
|
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return -EOPNOTSUPP;
|
|
|
|
server->sec_mode = le16_to_cpu(rsp->SecurityMode);
|
|
server->maxReq = min_t(unsigned int,
|
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le16_to_cpu(rsp->MaxMpxCount),
|
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cifs_max_pending);
|
|
set_credits(server, server->maxReq);
|
|
server->maxBuf = le16_to_cpu(rsp->MaxBufSize);
|
|
/* even though we do not use raw we might as well set this
|
|
accurately, in case we ever find a need for it */
|
|
if ((le16_to_cpu(rsp->RawMode) & RAW_ENABLE) == RAW_ENABLE) {
|
|
server->max_rw = 0xFF00;
|
|
server->capabilities = CAP_MPX_MODE | CAP_RAW_MODE;
|
|
} else {
|
|
server->max_rw = 0;/* do not need to use raw anyway */
|
|
server->capabilities = CAP_MPX_MODE;
|
|
}
|
|
tmp = (__s16)le16_to_cpu(rsp->ServerTimeZone);
|
|
if (tmp == -1) {
|
|
/* OS/2 often does not set timezone therefore
|
|
* we must use server time to calc time zone.
|
|
* Could deviate slightly from the right zone.
|
|
* Smallest defined timezone difference is 15 minutes
|
|
* (i.e. Nepal). Rounding up/down is done to match
|
|
* this requirement.
|
|
*/
|
|
int val, seconds, remain, result;
|
|
struct timespec ts;
|
|
unsigned long utc = ktime_get_real_seconds();
|
|
ts = cnvrtDosUnixTm(rsp->SrvTime.Date,
|
|
rsp->SrvTime.Time, 0);
|
|
cifs_dbg(FYI, "SrvTime %d sec since 1970 (utc: %d) diff: %d\n",
|
|
(int)ts.tv_sec, (int)utc,
|
|
(int)(utc - ts.tv_sec));
|
|
val = (int)(utc - ts.tv_sec);
|
|
seconds = abs(val);
|
|
result = (seconds / MIN_TZ_ADJ) * MIN_TZ_ADJ;
|
|
remain = seconds % MIN_TZ_ADJ;
|
|
if (remain >= (MIN_TZ_ADJ / 2))
|
|
result += MIN_TZ_ADJ;
|
|
if (val < 0)
|
|
result = -result;
|
|
server->timeAdj = result;
|
|
} else {
|
|
server->timeAdj = (int)tmp;
|
|
server->timeAdj *= 60; /* also in seconds */
|
|
}
|
|
cifs_dbg(FYI, "server->timeAdj: %d seconds\n", server->timeAdj);
|
|
|
|
|
|
/* BB get server time for time conversions and add
|
|
code to use it and timezone since this is not UTC */
|
|
|
|
if (rsp->EncryptionKeyLength ==
|
|
cpu_to_le16(CIFS_CRYPTO_KEY_SIZE)) {
|
|
memcpy(server->cryptkey, rsp->EncryptionKey,
|
|
CIFS_CRYPTO_KEY_SIZE);
|
|
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
|
|
return -EIO; /* need cryptkey unless plain text */
|
|
}
|
|
|
|
cifs_dbg(FYI, "LANMAN negotiated\n");
|
|
return 0;
|
|
}
|
|
#else
|
|
static inline int
|
|
decode_lanman_negprot_rsp(struct TCP_Server_Info *server, NEGOTIATE_RSP *pSMBr)
|
|
{
|
|
cifs_dbg(VFS, "mount failed, cifs module not built with CIFS_WEAK_PW_HASH support\n");
|
|
return -EOPNOTSUPP;
|
|
}
|
|
#endif
|
|
|
|
static bool
|
|
should_set_ext_sec_flag(enum securityEnum sectype)
|
|
{
|
|
switch (sectype) {
|
|
case RawNTLMSSP:
|
|
case Kerberos:
|
|
return true;
|
|
case Unspecified:
|
|
if (global_secflags &
|
|
(CIFSSEC_MAY_KRB5 | CIFSSEC_MAY_NTLMSSP))
|
|
return true;
|
|
/* Fallthrough */
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
int
|
|
CIFSSMBNegotiate(const unsigned int xid, struct cifs_ses *ses)
|
|
{
|
|
NEGOTIATE_REQ *pSMB;
|
|
NEGOTIATE_RSP *pSMBr;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int i;
|
|
struct TCP_Server_Info *server = ses->server;
|
|
u16 count;
|
|
|
|
if (!server) {
|
|
WARN(1, "%s: server is NULL!\n", __func__);
|
|
return -EIO;
|
|
}
|
|
|
|
rc = smb_init(SMB_COM_NEGOTIATE, 0, NULL /* no tcon yet */ ,
|
|
(void **) &pSMB, (void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Mid = get_next_mid(server);
|
|
pSMB->hdr.Flags2 |= (SMBFLG2_UNICODE | SMBFLG2_ERR_STATUS);
|
|
|
|
if (should_set_ext_sec_flag(ses->sectype)) {
|
|
cifs_dbg(FYI, "Requesting extended security.");
|
|
pSMB->hdr.Flags2 |= SMBFLG2_EXT_SEC;
|
|
}
|
|
|
|
count = 0;
|
|
for (i = 0; i < CIFS_NUM_PROT; i++) {
|
|
strncpy(pSMB->DialectsArray+count, protocols[i].name, 16);
|
|
count += strlen(protocols[i].name) + 1;
|
|
/* null at end of source and target buffers anyway */
|
|
}
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc != 0)
|
|
goto neg_err_exit;
|
|
|
|
server->dialect = le16_to_cpu(pSMBr->DialectIndex);
|
|
cifs_dbg(FYI, "Dialect: %d\n", server->dialect);
|
|
/* Check wct = 1 error case */
|
|
if ((pSMBr->hdr.WordCount < 13) || (server->dialect == BAD_PROT)) {
|
|
/* core returns wct = 1, but we do not ask for core - otherwise
|
|
small wct just comes when dialect index is -1 indicating we
|
|
could not negotiate a common dialect */
|
|
rc = -EOPNOTSUPP;
|
|
goto neg_err_exit;
|
|
} else if (pSMBr->hdr.WordCount == 13) {
|
|
server->negflavor = CIFS_NEGFLAVOR_LANMAN;
|
|
rc = decode_lanman_negprot_rsp(server, pSMBr);
|
|
goto signing_check;
|
|
} else if (pSMBr->hdr.WordCount != 17) {
|
|
/* unknown wct */
|
|
rc = -EOPNOTSUPP;
|
|
goto neg_err_exit;
|
|
}
|
|
/* else wct == 17, NTLM or better */
|
|
|
|
server->sec_mode = pSMBr->SecurityMode;
|
|
if ((server->sec_mode & SECMODE_USER) == 0)
|
|
cifs_dbg(FYI, "share mode security\n");
|
|
|
|
/* one byte, so no need to convert this or EncryptionKeyLen from
|
|
little endian */
|
|
server->maxReq = min_t(unsigned int, le16_to_cpu(pSMBr->MaxMpxCount),
|
|
cifs_max_pending);
|
|
set_credits(server, server->maxReq);
|
|
/* probably no need to store and check maxvcs */
|
|
server->maxBuf = le32_to_cpu(pSMBr->MaxBufferSize);
|
|
server->max_rw = le32_to_cpu(pSMBr->MaxRawSize);
|
|
cifs_dbg(NOISY, "Max buf = %d\n", ses->server->maxBuf);
|
|
server->capabilities = le32_to_cpu(pSMBr->Capabilities);
|
|
server->timeAdj = (int)(__s16)le16_to_cpu(pSMBr->ServerTimeZone);
|
|
server->timeAdj *= 60;
|
|
|
|
if (pSMBr->EncryptionKeyLength == CIFS_CRYPTO_KEY_SIZE) {
|
|
server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
|
|
memcpy(ses->server->cryptkey, pSMBr->u.EncryptionKey,
|
|
CIFS_CRYPTO_KEY_SIZE);
|
|
} else if (pSMBr->hdr.Flags2 & SMBFLG2_EXT_SEC ||
|
|
server->capabilities & CAP_EXTENDED_SECURITY) {
|
|
server->negflavor = CIFS_NEGFLAVOR_EXTENDED;
|
|
rc = decode_ext_sec_blob(ses, pSMBr);
|
|
} else if (server->sec_mode & SECMODE_PW_ENCRYPT) {
|
|
rc = -EIO; /* no crypt key only if plain text pwd */
|
|
} else {
|
|
server->negflavor = CIFS_NEGFLAVOR_UNENCAP;
|
|
server->capabilities &= ~CAP_EXTENDED_SECURITY;
|
|
}
|
|
|
|
signing_check:
|
|
if (!rc)
|
|
rc = cifs_enable_signing(server, ses->sign);
|
|
neg_err_exit:
|
|
cifs_buf_release(pSMB);
|
|
|
|
cifs_dbg(FYI, "negprot rc %d\n", rc);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon)
|
|
{
|
|
struct smb_hdr *smb_buffer;
|
|
int rc = 0;
|
|
|
|
cifs_dbg(FYI, "In tree disconnect\n");
|
|
|
|
/* BB: do we need to check this? These should never be NULL. */
|
|
if ((tcon->ses == NULL) || (tcon->ses->server == NULL))
|
|
return -EIO;
|
|
|
|
/*
|
|
* No need to return error on this operation if tid invalidated and
|
|
* closed on server already e.g. due to tcp session crashing. Also,
|
|
* the tcon is no longer on the list, so no need to take lock before
|
|
* checking this.
|
|
*/
|
|
if ((tcon->need_reconnect) || (tcon->ses->need_reconnect))
|
|
return 0;
|
|
|
|
rc = small_smb_init(SMB_COM_TREE_DISCONNECT, 0, tcon,
|
|
(void **)&smb_buffer);
|
|
if (rc)
|
|
return rc;
|
|
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)smb_buffer, 0);
|
|
cifs_small_buf_release(smb_buffer);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Tree disconnect failed %d\n", rc);
|
|
|
|
/* No need to return error on this operation if tid invalidated and
|
|
closed on server already e.g. due to tcp session crashing */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* This is a no-op for now. We're not really interested in the reply, but
|
|
* rather in the fact that the server sent one and that server->lstrp
|
|
* gets updated.
|
|
*
|
|
* FIXME: maybe we should consider checking that the reply matches request?
|
|
*/
|
|
static void
|
|
cifs_echo_callback(struct mid_q_entry *mid)
|
|
{
|
|
struct TCP_Server_Info *server = mid->callback_data;
|
|
|
|
DeleteMidQEntry(mid);
|
|
add_credits(server, 1, CIFS_ECHO_OP);
|
|
}
|
|
|
|
int
|
|
CIFSSMBEcho(struct TCP_Server_Info *server)
|
|
{
|
|
ECHO_REQ *smb;
|
|
int rc = 0;
|
|
struct kvec iov[2];
|
|
struct smb_rqst rqst = { .rq_iov = iov,
|
|
.rq_nvec = 2 };
|
|
|
|
cifs_dbg(FYI, "In echo request\n");
|
|
|
|
rc = small_smb_init(SMB_COM_ECHO, 0, NULL, (void **)&smb);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (server->capabilities & CAP_UNICODE)
|
|
smb->hdr.Flags2 |= SMBFLG2_UNICODE;
|
|
|
|
/* set up echo request */
|
|
smb->hdr.Tid = 0xffff;
|
|
smb->hdr.WordCount = 1;
|
|
put_unaligned_le16(1, &smb->EchoCount);
|
|
put_bcc(1, &smb->hdr);
|
|
smb->Data[0] = 'a';
|
|
inc_rfc1001_len(smb, 3);
|
|
|
|
iov[0].iov_len = 4;
|
|
iov[0].iov_base = smb;
|
|
iov[1].iov_len = get_rfc1002_length(smb);
|
|
iov[1].iov_base = (char *)smb + 4;
|
|
|
|
rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL,
|
|
server, CIFS_ASYNC_OP | CIFS_ECHO_OP);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Echo request failed: %d\n", rc);
|
|
|
|
cifs_small_buf_release(smb);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses)
|
|
{
|
|
LOGOFF_ANDX_REQ *pSMB;
|
|
int rc = 0;
|
|
|
|
cifs_dbg(FYI, "In SMBLogoff for session disconnect\n");
|
|
|
|
/*
|
|
* BB: do we need to check validity of ses and server? They should
|
|
* always be valid since we have an active reference. If not, that
|
|
* should probably be a BUG()
|
|
*/
|
|
if (!ses || !ses->server)
|
|
return -EIO;
|
|
|
|
mutex_lock(&ses->session_mutex);
|
|
if (ses->need_reconnect)
|
|
goto session_already_dead; /* no need to send SMBlogoff if uid
|
|
already closed due to reconnect */
|
|
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
|
|
if (rc) {
|
|
mutex_unlock(&ses->session_mutex);
|
|
return rc;
|
|
}
|
|
|
|
pSMB->hdr.Mid = get_next_mid(ses->server);
|
|
|
|
if (ses->server->sign)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
|
|
pSMB->AndXCommand = 0xFF;
|
|
rc = SendReceiveNoRsp(xid, ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
session_already_dead:
|
|
mutex_unlock(&ses->session_mutex);
|
|
|
|
/* if session dead then we do not need to do ulogoff,
|
|
since server closed smb session, no sense reporting
|
|
error */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fileName, __u16 type,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
struct unlink_psx_rq *pRqD;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cifs_dbg(FYI, "In POSIX delete\n");
|
|
PsxDelete:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB add path length overrun check */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = 0; /* BB double check this with jra */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
/* Setup pointer to Request Data (inode type) */
|
|
pRqD = (struct unlink_psx_rq *)(((char *)&pSMB->hdr.Protocol) + offset);
|
|
pRqD->type = cpu_to_le16(type);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + sizeof(struct unlink_psx_rq);
|
|
|
|
pSMB->DataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
|
|
pSMB->TotalDataCount = cpu_to_le16(sizeof(struct unlink_psx_rq));
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_UNLINK);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Posix delete returned %d\n", rc);
|
|
cifs_buf_release(pSMB);
|
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto PsxDelete;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
DELETE_FILE_REQ *pSMB = NULL;
|
|
DELETE_FILE_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
DelFileRetry:
|
|
rc = smb_init(SMB_COM_DELETE, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->fileName, name,
|
|
PATH_MAX, cifs_sb->local_nls,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, name, name_len);
|
|
}
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM);
|
|
pSMB->BufferFormat = 0x04;
|
|
inc_rfc1001_len(pSMB, name_len + 1);
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_deletes);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Error in RMFile = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto DelFileRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
DELETE_DIRECTORY_REQ *pSMB = NULL;
|
|
DELETE_DIRECTORY_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBRmDir\n");
|
|
RmDirRetry:
|
|
rc = smb_init(SMB_COM_DELETE_DIRECTORY, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
|
|
PATH_MAX, cifs_sb->local_nls,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->DirName, name, name_len);
|
|
}
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
inc_rfc1001_len(pSMB, name_len + 1);
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_rmdirs);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Error in RMDir = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto RmDirRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBMkDir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc = 0;
|
|
CREATE_DIRECTORY_REQ *pSMB = NULL;
|
|
CREATE_DIRECTORY_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBMkDir\n");
|
|
MkDirRetry:
|
|
rc = smb_init(SMB_COM_CREATE_DIRECTORY, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->DirName, name,
|
|
PATH_MAX, cifs_sb->local_nls,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->DirName, name, name_len);
|
|
}
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
inc_rfc1001_len(pSMB, name_len + 1);
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_mkdirs);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Error in Mkdir = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto MkDirRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon,
|
|
__u32 posix_flags, __u64 mode, __u16 *netfid,
|
|
FILE_UNIX_BASIC_INFO *pRetData, __u32 *pOplock,
|
|
const char *name, const struct nls_table *nls_codepage,
|
|
int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
OPEN_PSX_REQ *pdata;
|
|
OPEN_PSX_RSP *psx_rsp;
|
|
|
|
cifs_dbg(FYI, "In POSIX Create\n");
|
|
PsxCreat:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, name,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, name, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(OPEN_PSX_REQ);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* large enough */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
pdata = (OPEN_PSX_REQ *)(((char *)&pSMB->hdr.Protocol) + offset);
|
|
pdata->Level = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
|
|
pdata->Permissions = cpu_to_le64(mode);
|
|
pdata->PosixOpenFlags = cpu_to_le32(posix_flags);
|
|
pdata->OpenFlags = cpu_to_le32(*pOplock);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_POSIX_OPEN);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Posix create returned %d\n", rc);
|
|
goto psx_create_err;
|
|
}
|
|
|
|
cifs_dbg(FYI, "copying inode info\n");
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)) {
|
|
rc = -EIO; /* bad smb */
|
|
goto psx_create_err;
|
|
}
|
|
|
|
/* copy return information to pRetData */
|
|
psx_rsp = (OPEN_PSX_RSP *)((char *) &pSMBr->hdr.Protocol
|
|
+ le16_to_cpu(pSMBr->t2.DataOffset));
|
|
|
|
*pOplock = le16_to_cpu(psx_rsp->OplockFlags);
|
|
if (netfid)
|
|
*netfid = psx_rsp->Fid; /* cifs fid stays in le */
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
if (cpu_to_le32(FILE_CREATE) == psx_rsp->CreateAction)
|
|
*pOplock |= CIFS_CREATE_ACTION;
|
|
/* check to make sure response data is there */
|
|
if (psx_rsp->ReturnedLevel != cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC)) {
|
|
pRetData->Type = cpu_to_le32(-1); /* unknown */
|
|
cifs_dbg(NOISY, "unknown type\n");
|
|
} else {
|
|
if (get_bcc(&pSMBr->hdr) < sizeof(OPEN_PSX_RSP)
|
|
+ sizeof(FILE_UNIX_BASIC_INFO)) {
|
|
cifs_dbg(VFS, "Open response data too small\n");
|
|
pRetData->Type = cpu_to_le32(-1);
|
|
goto psx_create_err;
|
|
}
|
|
memcpy((char *) pRetData,
|
|
(char *)psx_rsp + sizeof(OPEN_PSX_RSP),
|
|
sizeof(FILE_UNIX_BASIC_INFO));
|
|
}
|
|
|
|
psx_create_err:
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (posix_flags & SMB_O_DIRECTORY)
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixmkdirs);
|
|
else
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_posixopens);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto PsxCreat;
|
|
|
|
return rc;
|
|
}
|
|
|
|
static __u16 convert_disposition(int disposition)
|
|
{
|
|
__u16 ofun = 0;
|
|
|
|
switch (disposition) {
|
|
case FILE_SUPERSEDE:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
|
|
break;
|
|
case FILE_OPEN:
|
|
ofun = SMBOPEN_OAPPEND;
|
|
break;
|
|
case FILE_CREATE:
|
|
ofun = SMBOPEN_OCREATE;
|
|
break;
|
|
case FILE_OPEN_IF:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OAPPEND;
|
|
break;
|
|
case FILE_OVERWRITE:
|
|
ofun = SMBOPEN_OTRUNC;
|
|
break;
|
|
case FILE_OVERWRITE_IF:
|
|
ofun = SMBOPEN_OCREATE | SMBOPEN_OTRUNC;
|
|
break;
|
|
default:
|
|
cifs_dbg(FYI, "unknown disposition %d\n", disposition);
|
|
ofun = SMBOPEN_OAPPEND; /* regular open */
|
|
}
|
|
return ofun;
|
|
}
|
|
|
|
static int
|
|
access_flags_to_smbopen_mode(const int access_flags)
|
|
{
|
|
int masked_flags = access_flags & (GENERIC_READ | GENERIC_WRITE);
|
|
|
|
if (masked_flags == GENERIC_READ)
|
|
return SMBOPEN_READ;
|
|
else if (masked_flags == GENERIC_WRITE)
|
|
return SMBOPEN_WRITE;
|
|
|
|
/* just go for read/write */
|
|
return SMBOPEN_READWRITE;
|
|
}
|
|
|
|
int
|
|
SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fileName, const int openDisposition,
|
|
const int access_flags, const int create_options, __u16 *netfid,
|
|
int *pOplock, FILE_ALL_INFO *pfile_info,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = -EACCES;
|
|
OPENX_REQ *pSMB = NULL;
|
|
OPENX_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 count;
|
|
|
|
OldOpenRetry:
|
|
rc = smb_init(SMB_COM_OPEN_ANDX, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
count = 1; /* account for one byte pad to word boundary */
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) (pSMB->fileName + 1),
|
|
fileName, PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve check for buffer overruns BB */
|
|
count = 0; /* no pad */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
if (*pOplock & REQ_OPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le16(REQ_OPLOCK);
|
|
else if (*pOplock & REQ_BATCHOPLOCK)
|
|
pSMB->OpenFlags = cpu_to_le16(REQ_BATCHOPLOCK);
|
|
|
|
pSMB->OpenFlags |= cpu_to_le16(REQ_MORE_INFO);
|
|
pSMB->Mode = cpu_to_le16(access_flags_to_smbopen_mode(access_flags));
|
|
pSMB->Mode |= cpu_to_le16(0x40); /* deny none */
|
|
/* set file as system file if special file such
|
|
as fifo and server expecting SFU style and
|
|
no Unix extensions */
|
|
|
|
if (create_options & CREATE_OPTION_SPECIAL)
|
|
pSMB->FileAttributes = cpu_to_le16(ATTR_SYSTEM);
|
|
else /* BB FIXME BB */
|
|
pSMB->FileAttributes = cpu_to_le16(0/*ATTR_NORMAL*/);
|
|
|
|
if (create_options & CREATE_OPTION_READONLY)
|
|
pSMB->FileAttributes |= cpu_to_le16(ATTR_READONLY);
|
|
|
|
/* BB FIXME BB */
|
|
/* pSMB->CreateOptions = cpu_to_le32(create_options &
|
|
CREATE_OPTIONS_MASK); */
|
|
/* BB FIXME END BB */
|
|
|
|
pSMB->Sattr = cpu_to_le16(ATTR_HIDDEN | ATTR_SYSTEM | ATTR_DIRECTORY);
|
|
pSMB->OpenFunction = cpu_to_le16(convert_disposition(openDisposition));
|
|
count += name_len;
|
|
inc_rfc1001_len(pSMB, count);
|
|
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *)pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Error in Open = %d\n", rc);
|
|
} else {
|
|
/* BB verify if wct == 15 */
|
|
|
|
/* *pOplock = pSMBr->OplockLevel; */ /* BB take from action field*/
|
|
|
|
*netfid = pSMBr->Fid; /* cifs fid stays in le */
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
/* BB FIXME BB */
|
|
/* if (cpu_to_le32(FILE_CREATE) == pSMBr->CreateAction)
|
|
*pOplock |= CIFS_CREATE_ACTION; */
|
|
/* BB FIXME END */
|
|
|
|
if (pfile_info) {
|
|
pfile_info->CreationTime = 0; /* BB convert CreateTime*/
|
|
pfile_info->LastAccessTime = 0; /* BB fixme */
|
|
pfile_info->LastWriteTime = 0; /* BB fixme */
|
|
pfile_info->ChangeTime = 0; /* BB fixme */
|
|
pfile_info->Attributes =
|
|
cpu_to_le32(le16_to_cpu(pSMBr->FileAttributes));
|
|
/* the file_info buf is endian converted by caller */
|
|
pfile_info->AllocationSize =
|
|
cpu_to_le64(le32_to_cpu(pSMBr->EndOfFile));
|
|
pfile_info->EndOfFile = pfile_info->AllocationSize;
|
|
pfile_info->NumberOfLinks = cpu_to_le32(1);
|
|
pfile_info->DeletePending = 0;
|
|
}
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto OldOpenRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, int *oplock,
|
|
FILE_ALL_INFO *buf)
|
|
{
|
|
int rc = -EACCES;
|
|
OPEN_REQ *req = NULL;
|
|
OPEN_RSP *rsp = NULL;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 count;
|
|
struct cifs_sb_info *cifs_sb = oparms->cifs_sb;
|
|
struct cifs_tcon *tcon = oparms->tcon;
|
|
int remap = cifs_remap(cifs_sb);
|
|
const struct nls_table *nls = cifs_sb->local_nls;
|
|
int create_options = oparms->create_options;
|
|
int desired_access = oparms->desired_access;
|
|
int disposition = oparms->disposition;
|
|
const char *path = oparms->path;
|
|
|
|
openRetry:
|
|
rc = smb_init(SMB_COM_NT_CREATE_ANDX, 24, tcon, (void **)&req,
|
|
(void **)&rsp);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* no commands go after this */
|
|
req->AndXCommand = 0xFF;
|
|
|
|
if (req->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
/* account for one byte pad to word boundary */
|
|
count = 1;
|
|
name_len = cifsConvertToUTF16((__le16 *)(req->fileName + 1),
|
|
path, PATH_MAX, nls, remap);
|
|
/* trailing null */
|
|
name_len++;
|
|
name_len *= 2;
|
|
req->NameLength = cpu_to_le16(name_len);
|
|
} else {
|
|
/* BB improve check for buffer overruns BB */
|
|
/* no pad */
|
|
count = 0;
|
|
name_len = strnlen(path, PATH_MAX);
|
|
/* trailing null */
|
|
name_len++;
|
|
req->NameLength = cpu_to_le16(name_len);
|
|
strncpy(req->fileName, path, name_len);
|
|
}
|
|
|
|
if (*oplock & REQ_OPLOCK)
|
|
req->OpenFlags = cpu_to_le32(REQ_OPLOCK);
|
|
else if (*oplock & REQ_BATCHOPLOCK)
|
|
req->OpenFlags = cpu_to_le32(REQ_BATCHOPLOCK);
|
|
|
|
req->DesiredAccess = cpu_to_le32(desired_access);
|
|
req->AllocationSize = 0;
|
|
|
|
/*
|
|
* Set file as system file if special file such as fifo and server
|
|
* expecting SFU style and no Unix extensions.
|
|
*/
|
|
if (create_options & CREATE_OPTION_SPECIAL)
|
|
req->FileAttributes = cpu_to_le32(ATTR_SYSTEM);
|
|
else
|
|
req->FileAttributes = cpu_to_le32(ATTR_NORMAL);
|
|
|
|
/*
|
|
* XP does not handle ATTR_POSIX_SEMANTICS but it helps speed up case
|
|
* sensitive checks for other servers such as Samba.
|
|
*/
|
|
if (tcon->ses->capabilities & CAP_UNIX)
|
|
req->FileAttributes |= cpu_to_le32(ATTR_POSIX_SEMANTICS);
|
|
|
|
if (create_options & CREATE_OPTION_READONLY)
|
|
req->FileAttributes |= cpu_to_le32(ATTR_READONLY);
|
|
|
|
req->ShareAccess = cpu_to_le32(FILE_SHARE_ALL);
|
|
req->CreateDisposition = cpu_to_le32(disposition);
|
|
req->CreateOptions = cpu_to_le32(create_options & CREATE_OPTIONS_MASK);
|
|
|
|
/* BB Expirement with various impersonation levels and verify */
|
|
req->ImpersonationLevel = cpu_to_le32(SECURITY_IMPERSONATION);
|
|
req->SecurityFlags = SECURITY_CONTEXT_TRACKING|SECURITY_EFFECTIVE_ONLY;
|
|
|
|
count += name_len;
|
|
inc_rfc1001_len(req, count);
|
|
|
|
req->ByteCount = cpu_to_le16(count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *)req,
|
|
(struct smb_hdr *)rsp, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_opens);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Error in Open = %d\n", rc);
|
|
cifs_buf_release(req);
|
|
if (rc == -EAGAIN)
|
|
goto openRetry;
|
|
return rc;
|
|
}
|
|
|
|
/* 1 byte no need to le_to_cpu */
|
|
*oplock = rsp->OplockLevel;
|
|
/* cifs fid stays in le */
|
|
oparms->fid->netfid = rsp->Fid;
|
|
|
|
/* Let caller know file was created so we can set the mode. */
|
|
/* Do we care about the CreateAction in any other cases? */
|
|
if (cpu_to_le32(FILE_CREATE) == rsp->CreateAction)
|
|
*oplock |= CIFS_CREATE_ACTION;
|
|
|
|
if (buf) {
|
|
/* copy from CreationTime to Attributes */
|
|
memcpy((char *)buf, (char *)&rsp->CreationTime, 36);
|
|
/* the file_info buf is endian converted by caller */
|
|
buf->AllocationSize = rsp->AllocationSize;
|
|
buf->EndOfFile = rsp->EndOfFile;
|
|
buf->NumberOfLinks = cpu_to_le32(1);
|
|
buf->DeletePending = 0;
|
|
}
|
|
|
|
cifs_buf_release(req);
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Discard any remaining data in the current SMB. To do this, we borrow the
|
|
* current bigbuf.
|
|
*/
|
|
int
|
|
cifs_discard_remaining_data(struct TCP_Server_Info *server)
|
|
{
|
|
unsigned int rfclen = server->pdu_size;
|
|
int remaining = rfclen + server->vals->header_preamble_size -
|
|
server->total_read;
|
|
|
|
while (remaining > 0) {
|
|
int length;
|
|
|
|
length = cifs_read_from_socket(server, server->bigbuf,
|
|
min_t(unsigned int, remaining,
|
|
CIFSMaxBufSize + MAX_HEADER_SIZE(server)));
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
remaining -= length;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
cifs_readv_discard(struct TCP_Server_Info *server, struct mid_q_entry *mid)
|
|
{
|
|
int length;
|
|
struct cifs_readdata *rdata = mid->callback_data;
|
|
|
|
length = cifs_discard_remaining_data(server);
|
|
dequeue_mid(mid, rdata->result);
|
|
mid->resp_buf = server->smallbuf;
|
|
server->smallbuf = NULL;
|
|
return length;
|
|
}
|
|
|
|
int
|
|
cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
|
|
{
|
|
int length, len;
|
|
unsigned int data_offset, data_len;
|
|
struct cifs_readdata *rdata = mid->callback_data;
|
|
char *buf = server->smallbuf;
|
|
unsigned int buflen = server->pdu_size +
|
|
server->vals->header_preamble_size;
|
|
bool use_rdma_mr = false;
|
|
|
|
cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n",
|
|
__func__, mid->mid, rdata->offset, rdata->bytes);
|
|
|
|
/*
|
|
* read the rest of READ_RSP header (sans Data array), or whatever we
|
|
* can if there's not enough data. At this point, we've read down to
|
|
* the Mid.
|
|
*/
|
|
len = min_t(unsigned int, buflen, server->vals->read_rsp_size) -
|
|
HEADER_SIZE(server) + 1;
|
|
|
|
length = cifs_read_from_socket(server,
|
|
buf + HEADER_SIZE(server) - 1, len);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
|
|
if (server->ops->is_session_expired &&
|
|
server->ops->is_session_expired(buf)) {
|
|
cifs_reconnect(server);
|
|
wake_up(&server->response_q);
|
|
return -1;
|
|
}
|
|
|
|
if (server->ops->is_status_pending &&
|
|
server->ops->is_status_pending(buf, server, 0)) {
|
|
cifs_discard_remaining_data(server);
|
|
return -1;
|
|
}
|
|
|
|
/* Was the SMB read successful? */
|
|
rdata->result = server->ops->map_error(buf, false);
|
|
if (rdata->result != 0) {
|
|
cifs_dbg(FYI, "%s: server returned error %d\n",
|
|
__func__, rdata->result);
|
|
return cifs_readv_discard(server, mid);
|
|
}
|
|
|
|
/* Is there enough to get to the rest of the READ_RSP header? */
|
|
if (server->total_read < server->vals->read_rsp_size) {
|
|
cifs_dbg(FYI, "%s: server returned short header. got=%u expected=%zu\n",
|
|
__func__, server->total_read,
|
|
server->vals->read_rsp_size);
|
|
rdata->result = -EIO;
|
|
return cifs_readv_discard(server, mid);
|
|
}
|
|
|
|
data_offset = server->ops->read_data_offset(buf) +
|
|
server->vals->header_preamble_size;
|
|
if (data_offset < server->total_read) {
|
|
/*
|
|
* win2k8 sometimes sends an offset of 0 when the read
|
|
* is beyond the EOF. Treat it as if the data starts just after
|
|
* the header.
|
|
*/
|
|
cifs_dbg(FYI, "%s: data offset (%u) inside read response header\n",
|
|
__func__, data_offset);
|
|
data_offset = server->total_read;
|
|
} else if (data_offset > MAX_CIFS_SMALL_BUFFER_SIZE) {
|
|
/* data_offset is beyond the end of smallbuf */
|
|
cifs_dbg(FYI, "%s: data offset (%u) beyond end of smallbuf\n",
|
|
__func__, data_offset);
|
|
rdata->result = -EIO;
|
|
return cifs_readv_discard(server, mid);
|
|
}
|
|
|
|
cifs_dbg(FYI, "%s: total_read=%u data_offset=%u\n",
|
|
__func__, server->total_read, data_offset);
|
|
|
|
len = data_offset - server->total_read;
|
|
if (len > 0) {
|
|
/* read any junk before data into the rest of smallbuf */
|
|
length = cifs_read_from_socket(server,
|
|
buf + server->total_read, len);
|
|
if (length < 0)
|
|
return length;
|
|
server->total_read += length;
|
|
}
|
|
|
|
/* set up first iov for signature check */
|
|
rdata->iov[0].iov_base = buf;
|
|
rdata->iov[0].iov_len = 4;
|
|
rdata->iov[1].iov_base = buf + 4;
|
|
rdata->iov[1].iov_len = server->total_read - 4;
|
|
cifs_dbg(FYI, "0: iov_base=%p iov_len=%u\n",
|
|
rdata->iov[0].iov_base, server->total_read);
|
|
|
|
/* how much data is in the response? */
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
use_rdma_mr = rdata->mr;
|
|
#endif
|
|
data_len = server->ops->read_data_length(buf, use_rdma_mr);
|
|
if (!use_rdma_mr && (data_offset + data_len > buflen)) {
|
|
/* data_len is corrupt -- discard frame */
|
|
rdata->result = -EIO;
|
|
return cifs_readv_discard(server, mid);
|
|
}
|
|
|
|
length = rdata->read_into_pages(server, rdata, data_len);
|
|
if (length < 0)
|
|
return length;
|
|
|
|
server->total_read += length;
|
|
|
|
cifs_dbg(FYI, "total_read=%u buflen=%u remaining=%u\n",
|
|
server->total_read, buflen, data_len);
|
|
|
|
/* discard anything left over */
|
|
if (server->total_read < buflen)
|
|
return cifs_readv_discard(server, mid);
|
|
|
|
dequeue_mid(mid, false);
|
|
mid->resp_buf = server->smallbuf;
|
|
server->smallbuf = NULL;
|
|
return length;
|
|
}
|
|
|
|
static void
|
|
cifs_readv_callback(struct mid_q_entry *mid)
|
|
{
|
|
struct cifs_readdata *rdata = mid->callback_data;
|
|
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
|
|
struct TCP_Server_Info *server = tcon->ses->server;
|
|
struct smb_rqst rqst = { .rq_iov = rdata->iov,
|
|
.rq_nvec = 2,
|
|
.rq_pages = rdata->pages,
|
|
.rq_npages = rdata->nr_pages,
|
|
.rq_pagesz = rdata->pagesz,
|
|
.rq_tailsz = rdata->tailsz };
|
|
|
|
cifs_dbg(FYI, "%s: mid=%llu state=%d result=%d bytes=%u\n",
|
|
__func__, mid->mid, mid->mid_state, rdata->result,
|
|
rdata->bytes);
|
|
|
|
switch (mid->mid_state) {
|
|
case MID_RESPONSE_RECEIVED:
|
|
/* result already set, check signature */
|
|
if (server->sign) {
|
|
int rc = 0;
|
|
|
|
rc = cifs_verify_signature(&rqst, server,
|
|
mid->sequence_number);
|
|
if (rc)
|
|
cifs_dbg(VFS, "SMB signature verification returned error = %d\n",
|
|
rc);
|
|
}
|
|
/* FIXME: should this be counted toward the initiating task? */
|
|
task_io_account_read(rdata->got_bytes);
|
|
cifs_stats_bytes_read(tcon, rdata->got_bytes);
|
|
break;
|
|
case MID_REQUEST_SUBMITTED:
|
|
case MID_RETRY_NEEDED:
|
|
rdata->result = -EAGAIN;
|
|
if (server->sign && rdata->got_bytes)
|
|
/* reset bytes number since we can not check a sign */
|
|
rdata->got_bytes = 0;
|
|
/* FIXME: should this be counted toward the initiating task? */
|
|
task_io_account_read(rdata->got_bytes);
|
|
cifs_stats_bytes_read(tcon, rdata->got_bytes);
|
|
break;
|
|
default:
|
|
rdata->result = -EIO;
|
|
}
|
|
|
|
queue_work(cifsiod_wq, &rdata->work);
|
|
DeleteMidQEntry(mid);
|
|
add_credits(server, 1, 0);
|
|
}
|
|
|
|
/* cifs_async_readv - send an async write, and set up mid to handle result */
|
|
int
|
|
cifs_async_readv(struct cifs_readdata *rdata)
|
|
{
|
|
int rc;
|
|
READ_REQ *smb = NULL;
|
|
int wct;
|
|
struct cifs_tcon *tcon = tlink_tcon(rdata->cfile->tlink);
|
|
struct smb_rqst rqst = { .rq_iov = rdata->iov,
|
|
.rq_nvec = 2 };
|
|
|
|
cifs_dbg(FYI, "%s: offset=%llu bytes=%u\n",
|
|
__func__, rdata->offset, rdata->bytes);
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES)
|
|
wct = 12;
|
|
else {
|
|
wct = 10; /* old style read */
|
|
if ((rdata->offset >> 32) > 0) {
|
|
/* can not handle this big offset for old */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **)&smb);
|
|
if (rc)
|
|
return rc;
|
|
|
|
smb->hdr.Pid = cpu_to_le16((__u16)rdata->pid);
|
|
smb->hdr.PidHigh = cpu_to_le16((__u16)(rdata->pid >> 16));
|
|
|
|
smb->AndXCommand = 0xFF; /* none */
|
|
smb->Fid = rdata->cfile->fid.netfid;
|
|
smb->OffsetLow = cpu_to_le32(rdata->offset & 0xFFFFFFFF);
|
|
if (wct == 12)
|
|
smb->OffsetHigh = cpu_to_le32(rdata->offset >> 32);
|
|
smb->Remaining = 0;
|
|
smb->MaxCount = cpu_to_le16(rdata->bytes & 0xFFFF);
|
|
smb->MaxCountHigh = cpu_to_le32(rdata->bytes >> 16);
|
|
if (wct == 12)
|
|
smb->ByteCount = 0;
|
|
else {
|
|
/* old style read */
|
|
struct smb_com_readx_req *smbr =
|
|
(struct smb_com_readx_req *)smb;
|
|
smbr->ByteCount = 0;
|
|
}
|
|
|
|
/* 4 for RFC1001 length + 1 for BCC */
|
|
rdata->iov[0].iov_base = smb;
|
|
rdata->iov[0].iov_len = 4;
|
|
rdata->iov[1].iov_base = (char *)smb + 4;
|
|
rdata->iov[1].iov_len = get_rfc1002_length(smb);
|
|
|
|
kref_get(&rdata->refcount);
|
|
rc = cifs_call_async(tcon->ses->server, &rqst, cifs_readv_receive,
|
|
cifs_readv_callback, NULL, rdata, 0);
|
|
|
|
if (rc == 0)
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads);
|
|
else
|
|
kref_put(&rdata->refcount, cifs_readdata_release);
|
|
|
|
cifs_small_buf_release(smb);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms,
|
|
unsigned int *nbytes, char **buf, int *pbuf_type)
|
|
{
|
|
int rc = -EACCES;
|
|
READ_REQ *pSMB = NULL;
|
|
READ_RSP *pSMBr = NULL;
|
|
char *pReadData = NULL;
|
|
int wct;
|
|
int resp_buf_type = 0;
|
|
struct kvec iov[1];
|
|
struct kvec rsp_iov;
|
|
__u32 pid = io_parms->pid;
|
|
__u16 netfid = io_parms->netfid;
|
|
__u64 offset = io_parms->offset;
|
|
struct cifs_tcon *tcon = io_parms->tcon;
|
|
unsigned int count = io_parms->length;
|
|
|
|
cifs_dbg(FYI, "Reading %d bytes on fid %d\n", count, netfid);
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES)
|
|
wct = 12;
|
|
else {
|
|
wct = 10; /* old style read */
|
|
if ((offset >> 32) > 0) {
|
|
/* can not handle this big offset for old */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
*nbytes = 0;
|
|
rc = small_smb_init(SMB_COM_READ_ANDX, wct, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
|
|
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
|
if (wct == 12)
|
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
|
|
|
pSMB->Remaining = 0;
|
|
pSMB->MaxCount = cpu_to_le16(count & 0xFFFF);
|
|
pSMB->MaxCountHigh = cpu_to_le32(count >> 16);
|
|
if (wct == 12)
|
|
pSMB->ByteCount = 0; /* no need to do le conversion since 0 */
|
|
else {
|
|
/* old style read */
|
|
struct smb_com_readx_req *pSMBW =
|
|
(struct smb_com_readx_req *)pSMB;
|
|
pSMBW->ByteCount = 0;
|
|
}
|
|
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1, &resp_buf_type,
|
|
CIFS_LOG_ERROR, &rsp_iov);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_reads);
|
|
pSMBr = (READ_RSP *)rsp_iov.iov_base;
|
|
if (rc) {
|
|
cifs_dbg(VFS, "Send error in read = %d\n", rc);
|
|
} else {
|
|
int data_length = le16_to_cpu(pSMBr->DataLengthHigh);
|
|
data_length = data_length << 16;
|
|
data_length += le16_to_cpu(pSMBr->DataLength);
|
|
*nbytes = data_length;
|
|
|
|
/*check that DataLength would not go beyond end of SMB */
|
|
if ((data_length > CIFSMaxBufSize)
|
|
|| (data_length > count)) {
|
|
cifs_dbg(FYI, "bad length %d for count %d\n",
|
|
data_length, count);
|
|
rc = -EIO;
|
|
*nbytes = 0;
|
|
} else {
|
|
pReadData = (char *) (&pSMBr->hdr.Protocol) +
|
|
le16_to_cpu(pSMBr->DataOffset);
|
|
/* if (rc = copy_to_user(buf, pReadData, data_length)) {
|
|
cifs_dbg(VFS, "Faulting on read rc = %d\n",rc);
|
|
rc = -EFAULT;
|
|
}*/ /* can not use copy_to_user when using page cache*/
|
|
if (*buf)
|
|
memcpy(*buf, pReadData, data_length);
|
|
}
|
|
}
|
|
|
|
if (*buf) {
|
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
|
|
} else if (resp_buf_type != CIFS_NO_BUFFER) {
|
|
/* return buffer to caller to free */
|
|
*buf = rsp_iov.iov_base;
|
|
if (resp_buf_type == CIFS_SMALL_BUFFER)
|
|
*pbuf_type = CIFS_SMALL_BUFFER;
|
|
else if (resp_buf_type == CIFS_LARGE_BUFFER)
|
|
*pbuf_type = CIFS_LARGE_BUFFER;
|
|
} /* else no valid buffer on return - leave as null */
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms,
|
|
unsigned int *nbytes, const char *buf)
|
|
{
|
|
int rc = -EACCES;
|
|
WRITE_REQ *pSMB = NULL;
|
|
WRITE_RSP *pSMBr = NULL;
|
|
int bytes_returned, wct;
|
|
__u32 bytes_sent;
|
|
__u16 byte_count;
|
|
__u32 pid = io_parms->pid;
|
|
__u16 netfid = io_parms->netfid;
|
|
__u64 offset = io_parms->offset;
|
|
struct cifs_tcon *tcon = io_parms->tcon;
|
|
unsigned int count = io_parms->length;
|
|
|
|
*nbytes = 0;
|
|
|
|
/* cifs_dbg(FYI, "write at %lld %d bytes\n", offset, count);*/
|
|
if (tcon->ses == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES)
|
|
wct = 14;
|
|
else {
|
|
wct = 12;
|
|
if ((offset >> 32) > 0) {
|
|
/* can not handle big offset for old srv */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
rc = smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
|
|
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
|
if (wct == 14)
|
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
|
|
|
pSMB->Reserved = 0xFFFFFFFF;
|
|
pSMB->WriteMode = 0;
|
|
pSMB->Remaining = 0;
|
|
|
|
/* Can increase buffer size if buffer is big enough in some cases ie we
|
|
can send more if LARGE_WRITE_X capability returned by the server and if
|
|
our buffer is big enough or if we convert to iovecs on socket writes
|
|
and eliminate the copy to the CIFS buffer */
|
|
if (tcon->ses->capabilities & CAP_LARGE_WRITE_X) {
|
|
bytes_sent = min_t(const unsigned int, CIFSMaxBufSize, count);
|
|
} else {
|
|
bytes_sent = (tcon->ses->server->maxBuf - MAX_CIFS_HDR_SIZE)
|
|
& ~0xFF;
|
|
}
|
|
|
|
if (bytes_sent > count)
|
|
bytes_sent = count;
|
|
pSMB->DataOffset =
|
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
|
|
if (buf)
|
|
memcpy(pSMB->Data, buf, bytes_sent);
|
|
else if (count != 0) {
|
|
/* No buffer */
|
|
cifs_buf_release(pSMB);
|
|
return -EINVAL;
|
|
} /* else setting file size with write of zero bytes */
|
|
if (wct == 14)
|
|
byte_count = bytes_sent + 1; /* pad */
|
|
else /* wct == 12 */
|
|
byte_count = bytes_sent + 5; /* bigger pad, smaller smb hdr */
|
|
|
|
pSMB->DataLengthLow = cpu_to_le16(bytes_sent & 0xFFFF);
|
|
pSMB->DataLengthHigh = cpu_to_le16(bytes_sent >> 16);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
|
|
if (wct == 14)
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
else { /* old style write has byte count 4 bytes earlier
|
|
so 4 bytes pad */
|
|
struct smb_com_writex_req *pSMBW =
|
|
(struct smb_com_writex_req *)pSMB;
|
|
pSMBW->ByteCount = cpu_to_le16(byte_count);
|
|
}
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in write = %d\n", rc);
|
|
} else {
|
|
*nbytes = le16_to_cpu(pSMBr->CountHigh);
|
|
*nbytes = (*nbytes) << 16;
|
|
*nbytes += le16_to_cpu(pSMBr->Count);
|
|
|
|
/*
|
|
* Mask off high 16 bits when bytes written as returned by the
|
|
* server is greater than bytes requested by the client. Some
|
|
* OS/2 servers are known to set incorrect CountHigh values.
|
|
*/
|
|
if (*nbytes > count)
|
|
*nbytes &= 0xFFFF;
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
void
|
|
cifs_writedata_release(struct kref *refcount)
|
|
{
|
|
struct cifs_writedata *wdata = container_of(refcount,
|
|
struct cifs_writedata, refcount);
|
|
#ifdef CONFIG_CIFS_SMB_DIRECT
|
|
if (wdata->mr) {
|
|
smbd_deregister_mr(wdata->mr);
|
|
wdata->mr = NULL;
|
|
}
|
|
#endif
|
|
|
|
if (wdata->cfile)
|
|
cifsFileInfo_put(wdata->cfile);
|
|
|
|
kfree(wdata);
|
|
}
|
|
|
|
/*
|
|
* Write failed with a retryable error. Resend the write request. It's also
|
|
* possible that the page was redirtied so re-clean the page.
|
|
*/
|
|
static void
|
|
cifs_writev_requeue(struct cifs_writedata *wdata)
|
|
{
|
|
int i, rc = 0;
|
|
struct inode *inode = d_inode(wdata->cfile->dentry);
|
|
struct TCP_Server_Info *server;
|
|
unsigned int rest_len;
|
|
|
|
server = tlink_tcon(wdata->cfile->tlink)->ses->server;
|
|
i = 0;
|
|
rest_len = wdata->bytes;
|
|
do {
|
|
struct cifs_writedata *wdata2;
|
|
unsigned int j, nr_pages, wsize, tailsz, cur_len;
|
|
|
|
wsize = server->ops->wp_retry_size(inode);
|
|
if (wsize < rest_len) {
|
|
nr_pages = wsize / PAGE_SIZE;
|
|
if (!nr_pages) {
|
|
rc = -ENOTSUPP;
|
|
break;
|
|
}
|
|
cur_len = nr_pages * PAGE_SIZE;
|
|
tailsz = PAGE_SIZE;
|
|
} else {
|
|
nr_pages = DIV_ROUND_UP(rest_len, PAGE_SIZE);
|
|
cur_len = rest_len;
|
|
tailsz = rest_len - (nr_pages - 1) * PAGE_SIZE;
|
|
}
|
|
|
|
wdata2 = cifs_writedata_alloc(nr_pages, cifs_writev_complete);
|
|
if (!wdata2) {
|
|
rc = -ENOMEM;
|
|
break;
|
|
}
|
|
|
|
for (j = 0; j < nr_pages; j++) {
|
|
wdata2->pages[j] = wdata->pages[i + j];
|
|
lock_page(wdata2->pages[j]);
|
|
clear_page_dirty_for_io(wdata2->pages[j]);
|
|
}
|
|
|
|
wdata2->sync_mode = wdata->sync_mode;
|
|
wdata2->nr_pages = nr_pages;
|
|
wdata2->offset = page_offset(wdata2->pages[0]);
|
|
wdata2->pagesz = PAGE_SIZE;
|
|
wdata2->tailsz = tailsz;
|
|
wdata2->bytes = cur_len;
|
|
|
|
wdata2->cfile = find_writable_file(CIFS_I(inode), false);
|
|
if (!wdata2->cfile) {
|
|
cifs_dbg(VFS, "No writable handles for inode\n");
|
|
rc = -EBADF;
|
|
break;
|
|
}
|
|
wdata2->pid = wdata2->cfile->pid;
|
|
rc = server->ops->async_writev(wdata2, cifs_writedata_release);
|
|
|
|
for (j = 0; j < nr_pages; j++) {
|
|
unlock_page(wdata2->pages[j]);
|
|
if (rc != 0 && rc != -EAGAIN) {
|
|
SetPageError(wdata2->pages[j]);
|
|
end_page_writeback(wdata2->pages[j]);
|
|
put_page(wdata2->pages[j]);
|
|
}
|
|
}
|
|
|
|
if (rc) {
|
|
kref_put(&wdata2->refcount, cifs_writedata_release);
|
|
if (rc == -EAGAIN)
|
|
continue;
|
|
break;
|
|
}
|
|
|
|
rest_len -= cur_len;
|
|
i += nr_pages;
|
|
} while (i < wdata->nr_pages);
|
|
|
|
mapping_set_error(inode->i_mapping, rc);
|
|
kref_put(&wdata->refcount, cifs_writedata_release);
|
|
}
|
|
|
|
void
|
|
cifs_writev_complete(struct work_struct *work)
|
|
{
|
|
struct cifs_writedata *wdata = container_of(work,
|
|
struct cifs_writedata, work);
|
|
struct inode *inode = d_inode(wdata->cfile->dentry);
|
|
int i = 0;
|
|
|
|
if (wdata->result == 0) {
|
|
spin_lock(&inode->i_lock);
|
|
cifs_update_eof(CIFS_I(inode), wdata->offset, wdata->bytes);
|
|
spin_unlock(&inode->i_lock);
|
|
cifs_stats_bytes_written(tlink_tcon(wdata->cfile->tlink),
|
|
wdata->bytes);
|
|
} else if (wdata->sync_mode == WB_SYNC_ALL && wdata->result == -EAGAIN)
|
|
return cifs_writev_requeue(wdata);
|
|
|
|
for (i = 0; i < wdata->nr_pages; i++) {
|
|
struct page *page = wdata->pages[i];
|
|
if (wdata->result == -EAGAIN)
|
|
__set_page_dirty_nobuffers(page);
|
|
else if (wdata->result < 0)
|
|
SetPageError(page);
|
|
end_page_writeback(page);
|
|
put_page(page);
|
|
}
|
|
if (wdata->result != -EAGAIN)
|
|
mapping_set_error(inode->i_mapping, wdata->result);
|
|
kref_put(&wdata->refcount, cifs_writedata_release);
|
|
}
|
|
|
|
struct cifs_writedata *
|
|
cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
|
|
{
|
|
struct cifs_writedata *wdata;
|
|
|
|
/* writedata + number of page pointers */
|
|
wdata = kzalloc(sizeof(*wdata) +
|
|
sizeof(struct page *) * nr_pages, GFP_NOFS);
|
|
if (wdata != NULL) {
|
|
kref_init(&wdata->refcount);
|
|
INIT_LIST_HEAD(&wdata->list);
|
|
init_completion(&wdata->done);
|
|
INIT_WORK(&wdata->work, complete);
|
|
}
|
|
return wdata;
|
|
}
|
|
|
|
/*
|
|
* Check the mid_state and signature on received buffer (if any), and queue the
|
|
* workqueue completion task.
|
|
*/
|
|
static void
|
|
cifs_writev_callback(struct mid_q_entry *mid)
|
|
{
|
|
struct cifs_writedata *wdata = mid->callback_data;
|
|
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
|
|
unsigned int written;
|
|
WRITE_RSP *smb = (WRITE_RSP *)mid->resp_buf;
|
|
|
|
switch (mid->mid_state) {
|
|
case MID_RESPONSE_RECEIVED:
|
|
wdata->result = cifs_check_receive(mid, tcon->ses->server, 0);
|
|
if (wdata->result != 0)
|
|
break;
|
|
|
|
written = le16_to_cpu(smb->CountHigh);
|
|
written <<= 16;
|
|
written += le16_to_cpu(smb->Count);
|
|
/*
|
|
* Mask off high 16 bits when bytes written as returned
|
|
* by the server is greater than bytes requested by the
|
|
* client. OS/2 servers are known to set incorrect
|
|
* CountHigh values.
|
|
*/
|
|
if (written > wdata->bytes)
|
|
written &= 0xFFFF;
|
|
|
|
if (written < wdata->bytes)
|
|
wdata->result = -ENOSPC;
|
|
else
|
|
wdata->bytes = written;
|
|
break;
|
|
case MID_REQUEST_SUBMITTED:
|
|
case MID_RETRY_NEEDED:
|
|
wdata->result = -EAGAIN;
|
|
break;
|
|
default:
|
|
wdata->result = -EIO;
|
|
break;
|
|
}
|
|
|
|
queue_work(cifsiod_wq, &wdata->work);
|
|
DeleteMidQEntry(mid);
|
|
add_credits(tcon->ses->server, 1, 0);
|
|
}
|
|
|
|
/* cifs_async_writev - send an async write, and set up mid to handle result */
|
|
int
|
|
cifs_async_writev(struct cifs_writedata *wdata,
|
|
void (*release)(struct kref *kref))
|
|
{
|
|
int rc = -EACCES;
|
|
WRITE_REQ *smb = NULL;
|
|
int wct;
|
|
struct cifs_tcon *tcon = tlink_tcon(wdata->cfile->tlink);
|
|
struct kvec iov[2];
|
|
struct smb_rqst rqst = { };
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) {
|
|
wct = 14;
|
|
} else {
|
|
wct = 12;
|
|
if (wdata->offset >> 32 > 0) {
|
|
/* can not handle big offset for old srv */
|
|
return -EIO;
|
|
}
|
|
}
|
|
|
|
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **)&smb);
|
|
if (rc)
|
|
goto async_writev_out;
|
|
|
|
smb->hdr.Pid = cpu_to_le16((__u16)wdata->pid);
|
|
smb->hdr.PidHigh = cpu_to_le16((__u16)(wdata->pid >> 16));
|
|
|
|
smb->AndXCommand = 0xFF; /* none */
|
|
smb->Fid = wdata->cfile->fid.netfid;
|
|
smb->OffsetLow = cpu_to_le32(wdata->offset & 0xFFFFFFFF);
|
|
if (wct == 14)
|
|
smb->OffsetHigh = cpu_to_le32(wdata->offset >> 32);
|
|
smb->Reserved = 0xFFFFFFFF;
|
|
smb->WriteMode = 0;
|
|
smb->Remaining = 0;
|
|
|
|
smb->DataOffset =
|
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
|
|
|
|
/* 4 for RFC1001 length + 1 for BCC */
|
|
iov[0].iov_len = 4;
|
|
iov[0].iov_base = smb;
|
|
iov[1].iov_len = get_rfc1002_length(smb) + 1;
|
|
iov[1].iov_base = (char *)smb + 4;
|
|
|
|
rqst.rq_iov = iov;
|
|
rqst.rq_nvec = 2;
|
|
rqst.rq_pages = wdata->pages;
|
|
rqst.rq_npages = wdata->nr_pages;
|
|
rqst.rq_pagesz = wdata->pagesz;
|
|
rqst.rq_tailsz = wdata->tailsz;
|
|
|
|
cifs_dbg(FYI, "async write at %llu %u bytes\n",
|
|
wdata->offset, wdata->bytes);
|
|
|
|
smb->DataLengthLow = cpu_to_le16(wdata->bytes & 0xFFFF);
|
|
smb->DataLengthHigh = cpu_to_le16(wdata->bytes >> 16);
|
|
|
|
if (wct == 14) {
|
|
inc_rfc1001_len(&smb->hdr, wdata->bytes + 1);
|
|
put_bcc(wdata->bytes + 1, &smb->hdr);
|
|
} else {
|
|
/* wct == 12 */
|
|
struct smb_com_writex_req *smbw =
|
|
(struct smb_com_writex_req *)smb;
|
|
inc_rfc1001_len(&smbw->hdr, wdata->bytes + 5);
|
|
put_bcc(wdata->bytes + 5, &smbw->hdr);
|
|
iov[1].iov_len += 4; /* pad bigger by four bytes */
|
|
}
|
|
|
|
kref_get(&wdata->refcount);
|
|
rc = cifs_call_async(tcon->ses->server, &rqst, NULL,
|
|
cifs_writev_callback, NULL, wdata, 0);
|
|
|
|
if (rc == 0)
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
|
|
else
|
|
kref_put(&wdata->refcount, release);
|
|
|
|
async_writev_out:
|
|
cifs_small_buf_release(smb);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms,
|
|
unsigned int *nbytes, struct kvec *iov, int n_vec)
|
|
{
|
|
int rc = -EACCES;
|
|
WRITE_REQ *pSMB = NULL;
|
|
int wct;
|
|
int smb_hdr_len;
|
|
int resp_buf_type = 0;
|
|
__u32 pid = io_parms->pid;
|
|
__u16 netfid = io_parms->netfid;
|
|
__u64 offset = io_parms->offset;
|
|
struct cifs_tcon *tcon = io_parms->tcon;
|
|
unsigned int count = io_parms->length;
|
|
struct kvec rsp_iov;
|
|
|
|
*nbytes = 0;
|
|
|
|
cifs_dbg(FYI, "write2 at %lld %d bytes\n", (long long)offset, count);
|
|
|
|
if (tcon->ses->capabilities & CAP_LARGE_FILES) {
|
|
wct = 14;
|
|
} else {
|
|
wct = 12;
|
|
if ((offset >> 32) > 0) {
|
|
/* can not handle big offset for old srv */
|
|
return -EIO;
|
|
}
|
|
}
|
|
rc = small_smb_init(SMB_COM_WRITE_ANDX, wct, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid >> 16));
|
|
|
|
/* tcon and ses pointer are checked in smb_init */
|
|
if (tcon->ses->server == NULL)
|
|
return -ECONNABORTED;
|
|
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid;
|
|
pSMB->OffsetLow = cpu_to_le32(offset & 0xFFFFFFFF);
|
|
if (wct == 14)
|
|
pSMB->OffsetHigh = cpu_to_le32(offset >> 32);
|
|
pSMB->Reserved = 0xFFFFFFFF;
|
|
pSMB->WriteMode = 0;
|
|
pSMB->Remaining = 0;
|
|
|
|
pSMB->DataOffset =
|
|
cpu_to_le16(offsetof(struct smb_com_write_req, Data) - 4);
|
|
|
|
pSMB->DataLengthLow = cpu_to_le16(count & 0xFFFF);
|
|
pSMB->DataLengthHigh = cpu_to_le16(count >> 16);
|
|
/* header + 1 byte pad */
|
|
smb_hdr_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 1;
|
|
if (wct == 14)
|
|
inc_rfc1001_len(pSMB, count + 1);
|
|
else /* wct == 12 */
|
|
inc_rfc1001_len(pSMB, count + 5); /* smb data starts later */
|
|
if (wct == 14)
|
|
pSMB->ByteCount = cpu_to_le16(count + 1);
|
|
else /* wct == 12 */ /* bigger pad, smaller smb hdr, keep offset ok */ {
|
|
struct smb_com_writex_req *pSMBW =
|
|
(struct smb_com_writex_req *)pSMB;
|
|
pSMBW->ByteCount = cpu_to_le16(count + 5);
|
|
}
|
|
iov[0].iov_base = pSMB;
|
|
if (wct == 14)
|
|
iov[0].iov_len = smb_hdr_len + 4;
|
|
else /* wct == 12 pad bigger by four bytes */
|
|
iov[0].iov_len = smb_hdr_len + 8;
|
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, n_vec + 1, &resp_buf_type, 0,
|
|
&rsp_iov);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_writes);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error Write2 = %d\n", rc);
|
|
} else if (resp_buf_type == 0) {
|
|
/* presumably this can not happen, but best to be safe */
|
|
rc = -EIO;
|
|
} else {
|
|
WRITE_RSP *pSMBr = (WRITE_RSP *)rsp_iov.iov_base;
|
|
*nbytes = le16_to_cpu(pSMBr->CountHigh);
|
|
*nbytes = (*nbytes) << 16;
|
|
*nbytes += le16_to_cpu(pSMBr->Count);
|
|
|
|
/*
|
|
* Mask off high 16 bits when bytes written as returned by the
|
|
* server is greater than bytes requested by the client. OS/2
|
|
* servers are known to set incorrect CountHigh values.
|
|
*/
|
|
if (*nbytes > count)
|
|
*nbytes &= 0xFFFF;
|
|
}
|
|
|
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const __u16 netfid, const __u8 lock_type, const __u32 num_unlock,
|
|
const __u32 num_lock, LOCKING_ANDX_RANGE *buf)
|
|
{
|
|
int rc = 0;
|
|
LOCK_REQ *pSMB = NULL;
|
|
struct kvec iov[2];
|
|
struct kvec rsp_iov;
|
|
int resp_buf_type;
|
|
__u16 count;
|
|
|
|
cifs_dbg(FYI, "cifs_lockv num lock %d num unlock %d\n",
|
|
num_lock, num_unlock);
|
|
|
|
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->Timeout = 0;
|
|
pSMB->NumberOfLocks = cpu_to_le16(num_lock);
|
|
pSMB->NumberOfUnlocks = cpu_to_le16(num_unlock);
|
|
pSMB->LockType = lock_type;
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = netfid; /* netfid stays le */
|
|
|
|
count = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4 -
|
|
(num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
|
|
iov[1].iov_base = (char *)buf;
|
|
iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
|
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
|
|
rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP,
|
|
&rsp_iov);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const __u16 smb_file_id, const __u32 netpid, const __u64 len,
|
|
const __u64 offset, const __u32 numUnlock,
|
|
const __u32 numLock, const __u8 lockType,
|
|
const bool waitFlag, const __u8 oplock_level)
|
|
{
|
|
int rc = 0;
|
|
LOCK_REQ *pSMB = NULL;
|
|
/* LOCK_RSP *pSMBr = NULL; */ /* No response data other than rc to parse */
|
|
int bytes_returned;
|
|
int flags = 0;
|
|
__u16 count;
|
|
|
|
cifs_dbg(FYI, "CIFSSMBLock timeout %d numLock %d\n",
|
|
(int)waitFlag, numLock);
|
|
rc = small_smb_init(SMB_COM_LOCKING_ANDX, 8, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
|
|
/* no response expected */
|
|
flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP;
|
|
pSMB->Timeout = 0;
|
|
} else if (waitFlag) {
|
|
flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
|
|
pSMB->Timeout = cpu_to_le32(-1);/* blocking - do not time out */
|
|
} else {
|
|
pSMB->Timeout = 0;
|
|
}
|
|
|
|
pSMB->NumberOfLocks = cpu_to_le16(numLock);
|
|
pSMB->NumberOfUnlocks = cpu_to_le16(numUnlock);
|
|
pSMB->LockType = lockType;
|
|
pSMB->OplockLevel = oplock_level;
|
|
pSMB->AndXCommand = 0xFF; /* none */
|
|
pSMB->Fid = smb_file_id; /* netfid stays le */
|
|
|
|
if ((numLock != 0) || (numUnlock != 0)) {
|
|
pSMB->Locks[0].Pid = cpu_to_le16(netpid);
|
|
/* BB where to store pid high? */
|
|
pSMB->Locks[0].LengthLow = cpu_to_le32((u32)len);
|
|
pSMB->Locks[0].LengthHigh = cpu_to_le32((u32)(len>>32));
|
|
pSMB->Locks[0].OffsetLow = cpu_to_le32((u32)offset);
|
|
pSMB->Locks[0].OffsetHigh = cpu_to_le32((u32)(offset>>32));
|
|
count = sizeof(LOCKING_ANDX_RANGE);
|
|
} else {
|
|
/* oplock break */
|
|
count = 0;
|
|
}
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
if (waitFlag)
|
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMB, &bytes_returned);
|
|
else
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *)pSMB, flags);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in Lock = %d\n", rc);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const __u16 smb_file_id, const __u32 netpid,
|
|
const loff_t start_offset, const __u64 len,
|
|
struct file_lock *pLockData, const __u16 lock_type,
|
|
const bool waitFlag)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
|
|
struct cifs_posix_lock *parm_data;
|
|
int rc = 0;
|
|
int timeout = 0;
|
|
int bytes_returned = 0;
|
|
int resp_buf_type = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
struct kvec iov[1];
|
|
struct kvec rsp_iov;
|
|
|
|
cifs_dbg(FYI, "Posix Lock\n");
|
|
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)pSMB;
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
count = sizeof(struct cifs_posix_lock);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
if (pLockData)
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
else
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
parm_data = (struct cifs_posix_lock *)
|
|
(((char *) &pSMB->hdr.Protocol) + offset);
|
|
|
|
parm_data->lock_type = cpu_to_le16(lock_type);
|
|
if (waitFlag) {
|
|
timeout = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
|
|
parm_data->lock_flags = cpu_to_le16(1);
|
|
pSMB->Timeout = cpu_to_le32(-1);
|
|
} else
|
|
pSMB->Timeout = 0;
|
|
|
|
parm_data->pid = cpu_to_le32(netpid);
|
|
parm_data->start = cpu_to_le64(start_offset);
|
|
parm_data->length = cpu_to_le64(len); /* normalize negative numbers */
|
|
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = smb_file_id;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_LOCK);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
if (waitFlag) {
|
|
rc = SendReceiveBlockingLock(xid, tcon, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned);
|
|
} else {
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovecs */,
|
|
&resp_buf_type, timeout, &rsp_iov);
|
|
pSMBr = (struct smb_com_transaction2_sfi_rsp *)rsp_iov.iov_base;
|
|
}
|
|
cifs_small_buf_release(pSMB);
|
|
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in Posix Lock = %d\n", rc);
|
|
} else if (pLockData) {
|
|
/* lock structure can be returned on get */
|
|
__u16 data_offset;
|
|
__u16 data_count;
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(*parm_data)) {
|
|
rc = -EIO; /* bad smb */
|
|
goto plk_err_exit;
|
|
}
|
|
data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
data_count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
if (data_count < sizeof(struct cifs_posix_lock)) {
|
|
rc = -EIO;
|
|
goto plk_err_exit;
|
|
}
|
|
parm_data = (struct cifs_posix_lock *)
|
|
((char *)&pSMBr->hdr.Protocol + data_offset);
|
|
if (parm_data->lock_type == cpu_to_le16(CIFS_UNLCK))
|
|
pLockData->fl_type = F_UNLCK;
|
|
else {
|
|
if (parm_data->lock_type ==
|
|
cpu_to_le16(CIFS_RDLCK))
|
|
pLockData->fl_type = F_RDLCK;
|
|
else if (parm_data->lock_type ==
|
|
cpu_to_le16(CIFS_WRLCK))
|
|
pLockData->fl_type = F_WRLCK;
|
|
|
|
pLockData->fl_start = le64_to_cpu(parm_data->start);
|
|
pLockData->fl_end = pLockData->fl_start +
|
|
le64_to_cpu(parm_data->length) - 1;
|
|
pLockData->fl_pid = -le32_to_cpu(parm_data->pid);
|
|
}
|
|
}
|
|
|
|
plk_err_exit:
|
|
free_rsp_buf(resp_buf_type, rsp_iov.iov_base);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
int
|
|
CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id)
|
|
{
|
|
int rc = 0;
|
|
CLOSE_REQ *pSMB = NULL;
|
|
cifs_dbg(FYI, "In CIFSSMBClose\n");
|
|
|
|
/* do not retry on dead session on close */
|
|
rc = small_smb_init(SMB_COM_CLOSE, 3, tcon, (void **) &pSMB);
|
|
if (rc == -EAGAIN)
|
|
return 0;
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = (__u16) smb_file_id;
|
|
pSMB->LastWriteTime = 0xFFFFFFFF;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_closes);
|
|
if (rc) {
|
|
if (rc != -EINTR) {
|
|
/* EINTR is expected when user ctl-c to kill app */
|
|
cifs_dbg(VFS, "Send error in Close = %d\n", rc);
|
|
}
|
|
}
|
|
|
|
/* Since session is dead, file will be closed on server already */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, int smb_file_id)
|
|
{
|
|
int rc = 0;
|
|
FLUSH_REQ *pSMB = NULL;
|
|
cifs_dbg(FYI, "In CIFSSMBFlush\n");
|
|
|
|
rc = small_smb_init(SMB_COM_FLUSH, 1, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = (__u16) smb_file_id;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_flushes);
|
|
if (rc)
|
|
cifs_dbg(VFS, "Send error in Flush = %d\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc = 0;
|
|
RENAME_REQ *pSMB = NULL;
|
|
RENAME_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBRename\n");
|
|
renameRetry:
|
|
rc = smb_init(SMB_COM_RENAME, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
|
|
from_name, PATH_MAX,
|
|
cifs_sb->local_nls, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->OldFileName[name_len] = 0x04; /* pad */
|
|
/* protocol requires ASCII signature byte on Unicode string */
|
|
pSMB->OldFileName[name_len + 1] = 0x00;
|
|
name_len2 =
|
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
|
|
to_name, PATH_MAX, cifs_sb->local_nls,
|
|
remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(from_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, from_name, name_len);
|
|
name_len2 = strnlen(to_name, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2;
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_renames);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in rename = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto renameRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *pTcon,
|
|
int netfid, const char *target_name,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_sfi_rsp *pSMBr = NULL;
|
|
struct set_file_rename *rename_info;
|
|
char *data_offset;
|
|
char dummy_string[30];
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int len_of_str;
|
|
__u16 params, param_offset, offset, count, byte_count;
|
|
|
|
cifs_dbg(FYI, "Rename to File by handle\n");
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, pTcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
rename_info = (struct set_file_rename *) data_offset;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000); /* BB find max SMB from sess */
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
/* construct random name ".cifs_tmp<inodenum><mid>" */
|
|
rename_info->overwrite = cpu_to_le32(1);
|
|
rename_info->root_fid = 0;
|
|
/* unicode only call */
|
|
if (target_name == NULL) {
|
|
sprintf(dummy_string, "cifs%x", pSMB->hdr.Mid);
|
|
len_of_str =
|
|
cifsConvertToUTF16((__le16 *)rename_info->target_name,
|
|
dummy_string, 24, nls_codepage, remap);
|
|
} else {
|
|
len_of_str =
|
|
cifsConvertToUTF16((__le16 *)rename_info->target_name,
|
|
target_name, PATH_MAX, nls_codepage,
|
|
remap);
|
|
}
|
|
rename_info->target_name_len = cpu_to_le32(2 * len_of_str);
|
|
count = 12 /* sizeof(struct set_file_rename) */ + (2 * len_of_str);
|
|
byte_count += count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->Fid = netfid;
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_RENAME_INFORMATION);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, pTcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&pTcon->stats.cifs_stats.num_t2renames);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in Rename (by file handle) = %d\n",
|
|
rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBCopy(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fromName, const __u16 target_tid, const char *toName,
|
|
const int flags, const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
COPY_REQ *pSMB = NULL;
|
|
COPY_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBCopy\n");
|
|
copyRetry:
|
|
rc = smb_init(SMB_COM_COPY, 1, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
pSMB->Tid2 = target_tid;
|
|
|
|
pSMB->Flags = cpu_to_le16(flags & COPY_TREE);
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->OldFileName,
|
|
fromName, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->OldFileName[name_len] = 0x04; /* pad */
|
|
/* protocol requires ASCII signature byte on Unicode string */
|
|
pSMB->OldFileName[name_len + 1] = 0x00;
|
|
name_len2 =
|
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
|
|
toName, PATH_MAX, nls_codepage, remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, fromName, name_len);
|
|
name_len2 = strnlen(toName, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], toName, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* 1st signature byte */ + name_len + name_len2;
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in copy = %d with %d files copied\n",
|
|
rc, le16_to_cpu(pSMBr->CopyCount));
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto copyRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSUnixCreateSymLink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
char *data_offset;
|
|
int name_len;
|
|
int name_len_target;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cifs_dbg(FYI, "In Symlink Unix style\n");
|
|
createSymLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fromName,
|
|
/* find define for this maxpathcomponent */
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fromName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fromName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len_target =
|
|
cifsConvertToUTF16((__le16 *) data_offset, toName,
|
|
/* find define for this maxpathcomponent */
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len_target++; /* trailing null */
|
|
name_len_target *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len_target = strnlen(toName, PATH_MAX);
|
|
name_len_target++; /* trailing null */
|
|
strncpy(data_offset, toName, name_len_target);
|
|
}
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max on data count below from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + name_len_target;
|
|
pSMB->DataCount = cpu_to_le16(name_len_target);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_LINK);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_symlinks);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in SetPathInfo create symlink = %d\n",
|
|
rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto createSymLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSUnixCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fromName, const char *toName,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
char *data_offset;
|
|
int name_len;
|
|
int name_len_target;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cifs_dbg(FYI, "In Create Hard link Unix style\n");
|
|
createHardLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len = cifsConvertToUTF16((__le16 *) pSMB->FileName, toName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(toName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, toName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len_target =
|
|
cifsConvertToUTF16((__le16 *) data_offset, fromName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len_target++; /* trailing null */
|
|
name_len_target *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len_target = strnlen(fromName, PATH_MAX);
|
|
name_len_target++; /* trailing null */
|
|
strncpy(data_offset, fromName, name_len_target);
|
|
}
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max on data count below from sess*/
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + name_len_target;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->DataCount = cpu_to_le16(name_len_target);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_HLINK);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in SetPathInfo (hard link) = %d\n",
|
|
rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto createHardLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSCreateHardLink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
int rc = 0;
|
|
NT_RENAME_REQ *pSMB = NULL;
|
|
RENAME_RSP *pSMBr = NULL;
|
|
int bytes_returned;
|
|
int name_len, name_len2;
|
|
__u16 count;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
cifs_dbg(FYI, "In CIFSCreateHardLink\n");
|
|
winCreateHardLinkRetry:
|
|
|
|
rc = smb_init(SMB_COM_NT_RENAME, 4, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
pSMB->Flags = cpu_to_le16(CREATE_HARD_LINK);
|
|
pSMB->ClusterCount = 0;
|
|
|
|
pSMB->BufferFormat = 0x04;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->OldFileName, from_name,
|
|
PATH_MAX, cifs_sb->local_nls, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
|
|
/* protocol specifies ASCII buffer format (0x04) for unicode */
|
|
pSMB->OldFileName[name_len] = 0x04;
|
|
pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
|
|
name_len2 =
|
|
cifsConvertToUTF16((__le16 *)&pSMB->OldFileName[name_len+2],
|
|
to_name, PATH_MAX, cifs_sb->local_nls,
|
|
remap);
|
|
name_len2 += 1 /* trailing null */ + 1 /* Signature word */ ;
|
|
name_len2 *= 2; /* convert to bytes */
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(from_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->OldFileName, from_name, name_len);
|
|
name_len2 = strnlen(to_name, PATH_MAX);
|
|
name_len2++; /* trailing null */
|
|
pSMB->OldFileName[name_len] = 0x04; /* 2nd buffer format */
|
|
strncpy(&pSMB->OldFileName[name_len + 1], to_name, name_len2);
|
|
name_len2++; /* trailing null */
|
|
name_len2++; /* signature byte */
|
|
}
|
|
|
|
count = 1 /* string type byte */ + name_len + name_len2;
|
|
inc_rfc1001_len(pSMB, count);
|
|
pSMB->ByteCount = cpu_to_le16(count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_hardlinks);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in hard link (NT rename) = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto winCreateHardLinkRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *searchName, char **symlinkinfo,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* SMB_QUERY_FILE_UNIX_LINK */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
char *data_start;
|
|
|
|
cifs_dbg(FYI, "In QPathSymLinkInfo (Unix) for path %s\n", searchName);
|
|
|
|
querySymLinkRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName,
|
|
searchName, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_LINK);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QuerySymLinkInfo = %d\n", rc);
|
|
} else {
|
|
/* decode response */
|
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
/* BB also check enough total bytes returned */
|
|
if (rc || get_bcc(&pSMBr->hdr) < 2)
|
|
rc = -EIO;
|
|
else {
|
|
bool is_unicode;
|
|
u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
|
|
data_start = ((char *) &pSMBr->hdr.Protocol) +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
is_unicode = true;
|
|
else
|
|
is_unicode = false;
|
|
|
|
/* BB FIXME investigate remapping reserved chars here */
|
|
*symlinkinfo = cifs_strndup_from_utf16(data_start,
|
|
count, is_unicode, nls_codepage);
|
|
if (!*symlinkinfo)
|
|
rc = -ENOMEM;
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto querySymLinkRetry;
|
|
return rc;
|
|
}
|
|
|
|
/*
|
|
* Recent Windows versions now create symlinks more frequently
|
|
* and they use the "reparse point" mechanism below. We can of course
|
|
* do symlinks nicely to Samba and other servers which support the
|
|
* CIFS Unix Extensions and we can also do SFU symlinks and "client only"
|
|
* "MF" symlinks optionally, but for recent Windows we really need to
|
|
* reenable the code below and fix the cifs_symlink callers to handle this.
|
|
* In the interim this code has been moved to its own config option so
|
|
* it is not compiled in by default until callers fixed up and more tested.
|
|
*/
|
|
int
|
|
CIFSSMBQuerySymLink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
__u16 fid, char **symlinkinfo,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
struct smb_com_transaction_ioctl_req *pSMB;
|
|
struct smb_com_transaction_ioctl_rsp *pSMBr;
|
|
bool is_unicode;
|
|
unsigned int sub_len;
|
|
char *sub_start;
|
|
struct reparse_symlink_data *reparse_buf;
|
|
struct reparse_posix_data *posix_buf;
|
|
__u32 data_offset, data_count;
|
|
char *end_of_smb;
|
|
|
|
cifs_dbg(FYI, "In Windows reparse style QueryLink for fid %u\n", fid);
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->TotalParameterCount = 0 ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le32(2);
|
|
/* BB find exact data count max from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 4;
|
|
pSMB->Reserved = 0;
|
|
pSMB->ParameterOffset = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 4;
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->FunctionCode = cpu_to_le32(FSCTL_GET_REPARSE_POINT);
|
|
pSMB->IsFsctl = 1; /* FSCTL */
|
|
pSMB->IsRootFlag = 0;
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->ByteCount = 0;
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QueryReparseLinkInfo = %d\n", rc);
|
|
goto qreparse_out;
|
|
}
|
|
|
|
data_offset = le32_to_cpu(pSMBr->DataOffset);
|
|
data_count = le32_to_cpu(pSMBr->DataCount);
|
|
if (get_bcc(&pSMBr->hdr) < 2 || data_offset > 512) {
|
|
/* BB also check enough total bytes returned */
|
|
rc = -EIO; /* bad smb */
|
|
goto qreparse_out;
|
|
}
|
|
if (!data_count || (data_count > 2048)) {
|
|
rc = -EIO;
|
|
cifs_dbg(FYI, "Invalid return data count on get reparse info ioctl\n");
|
|
goto qreparse_out;
|
|
}
|
|
end_of_smb = 2 + get_bcc(&pSMBr->hdr) + (char *)&pSMBr->ByteCount;
|
|
reparse_buf = (struct reparse_symlink_data *)
|
|
((char *)&pSMBr->hdr.Protocol + data_offset);
|
|
if ((char *)reparse_buf >= end_of_smb) {
|
|
rc = -EIO;
|
|
goto qreparse_out;
|
|
}
|
|
if (reparse_buf->ReparseTag == cpu_to_le32(IO_REPARSE_TAG_NFS)) {
|
|
cifs_dbg(FYI, "NFS style reparse tag\n");
|
|
posix_buf = (struct reparse_posix_data *)reparse_buf;
|
|
|
|
if (posix_buf->InodeType != cpu_to_le64(NFS_SPECFILE_LNK)) {
|
|
cifs_dbg(FYI, "unsupported file type 0x%llx\n",
|
|
le64_to_cpu(posix_buf->InodeType));
|
|
rc = -EOPNOTSUPP;
|
|
goto qreparse_out;
|
|
}
|
|
is_unicode = true;
|
|
sub_len = le16_to_cpu(reparse_buf->ReparseDataLength);
|
|
if (posix_buf->PathBuffer + sub_len > end_of_smb) {
|
|
cifs_dbg(FYI, "reparse buf beyond SMB\n");
|
|
rc = -EIO;
|
|
goto qreparse_out;
|
|
}
|
|
*symlinkinfo = cifs_strndup_from_utf16(posix_buf->PathBuffer,
|
|
sub_len, is_unicode, nls_codepage);
|
|
goto qreparse_out;
|
|
} else if (reparse_buf->ReparseTag !=
|
|
cpu_to_le32(IO_REPARSE_TAG_SYMLINK)) {
|
|
rc = -EOPNOTSUPP;
|
|
goto qreparse_out;
|
|
}
|
|
|
|
/* Reparse tag is NTFS symlink */
|
|
sub_start = le16_to_cpu(reparse_buf->SubstituteNameOffset) +
|
|
reparse_buf->PathBuffer;
|
|
sub_len = le16_to_cpu(reparse_buf->SubstituteNameLength);
|
|
if (sub_start + sub_len > end_of_smb) {
|
|
cifs_dbg(FYI, "reparse buf beyond SMB\n");
|
|
rc = -EIO;
|
|
goto qreparse_out;
|
|
}
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
is_unicode = true;
|
|
else
|
|
is_unicode = false;
|
|
|
|
/* BB FIXME investigate remapping reserved chars here */
|
|
*symlinkinfo = cifs_strndup_from_utf16(sub_start, sub_len, is_unicode,
|
|
nls_codepage);
|
|
if (!*symlinkinfo)
|
|
rc = -ENOMEM;
|
|
qreparse_out:
|
|
cifs_buf_release(pSMB);
|
|
|
|
/*
|
|
* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
* since file handle passed in no longer valid.
|
|
*/
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMB_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
|
|
__u16 fid)
|
|
{
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
struct smb_com_transaction_compr_ioctl_req *pSMB;
|
|
struct smb_com_transaction_ioctl_rsp *pSMBr;
|
|
|
|
cifs_dbg(FYI, "Set compression for %u\n", fid);
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->compression_state = cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);
|
|
|
|
pSMB->TotalParameterCount = 0;
|
|
pSMB->TotalDataCount = cpu_to_le32(2);
|
|
pSMB->MaxParameterCount = 0;
|
|
pSMB->MaxDataCount = 0;
|
|
pSMB->MaxSetupCount = 4;
|
|
pSMB->Reserved = 0;
|
|
pSMB->ParameterOffset = 0;
|
|
pSMB->DataCount = cpu_to_le32(2);
|
|
pSMB->DataOffset =
|
|
cpu_to_le32(offsetof(struct smb_com_transaction_compr_ioctl_req,
|
|
compression_state) - 4); /* 84 */
|
|
pSMB->SetupCount = 4;
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_IOCTL);
|
|
pSMB->ParameterCount = 0;
|
|
pSMB->FunctionCode = cpu_to_le32(FSCTL_SET_COMPRESSION);
|
|
pSMB->IsFsctl = 1; /* FSCTL */
|
|
pSMB->IsRootFlag = 0;
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
/* 3 byte pad, followed by 2 byte compress state */
|
|
pSMB->ByteCount = cpu_to_le16(5);
|
|
inc_rfc1001_len(pSMB, 5);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in SetCompression = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/*
|
|
* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
* since file handle passed in no longer valid.
|
|
*/
|
|
return rc;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_CIFS_POSIX
|
|
|
|
/*Convert an Access Control Entry from wire format to local POSIX xattr format*/
|
|
static void cifs_convert_ace(struct posix_acl_xattr_entry *ace,
|
|
struct cifs_posix_ace *cifs_ace)
|
|
{
|
|
/* u8 cifs fields do not need le conversion */
|
|
ace->e_perm = cpu_to_le16(cifs_ace->cifs_e_perm);
|
|
ace->e_tag = cpu_to_le16(cifs_ace->cifs_e_tag);
|
|
ace->e_id = cpu_to_le32(le64_to_cpu(cifs_ace->cifs_uid));
|
|
/*
|
|
cifs_dbg(FYI, "perm %d tag %d id %d\n",
|
|
ace->e_perm, ace->e_tag, ace->e_id);
|
|
*/
|
|
|
|
return;
|
|
}
|
|
|
|
/* Convert ACL from CIFS POSIX wire format to local Linux POSIX ACL xattr */
|
|
static int cifs_copy_posix_acl(char *trgt, char *src, const int buflen,
|
|
const int acl_type, const int size_of_data_area)
|
|
{
|
|
int size = 0;
|
|
int i;
|
|
__u16 count;
|
|
struct cifs_posix_ace *pACE;
|
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)src;
|
|
struct posix_acl_xattr_header *local_acl = (void *)trgt;
|
|
|
|
if (le16_to_cpu(cifs_acl->version) != CIFS_ACL_VERSION)
|
|
return -EOPNOTSUPP;
|
|
|
|
if (acl_type == ACL_TYPE_ACCESS) {
|
|
count = le16_to_cpu(cifs_acl->access_entry_count);
|
|
pACE = &cifs_acl->ace_array[0];
|
|
size = sizeof(struct cifs_posix_acl);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* check if we would go beyond end of SMB */
|
|
if (size_of_data_area < size) {
|
|
cifs_dbg(FYI, "bad CIFS POSIX ACL size %d vs. %d\n",
|
|
size_of_data_area, size);
|
|
return -EINVAL;
|
|
}
|
|
} else if (acl_type == ACL_TYPE_DEFAULT) {
|
|
count = le16_to_cpu(cifs_acl->access_entry_count);
|
|
size = sizeof(struct cifs_posix_acl);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* skip past access ACEs to get to default ACEs */
|
|
pACE = &cifs_acl->ace_array[count];
|
|
count = le16_to_cpu(cifs_acl->default_entry_count);
|
|
size += sizeof(struct cifs_posix_ace) * count;
|
|
/* check if we would go beyond end of SMB */
|
|
if (size_of_data_area < size)
|
|
return -EINVAL;
|
|
} else {
|
|
/* illegal type */
|
|
return -EINVAL;
|
|
}
|
|
|
|
size = posix_acl_xattr_size(count);
|
|
if ((buflen == 0) || (local_acl == NULL)) {
|
|
/* used to query ACL EA size */
|
|
} else if (size > buflen) {
|
|
return -ERANGE;
|
|
} else /* buffer big enough */ {
|
|
struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1);
|
|
|
|
local_acl->a_version = cpu_to_le32(POSIX_ACL_XATTR_VERSION);
|
|
for (i = 0; i < count ; i++) {
|
|
cifs_convert_ace(&ace[i], pACE);
|
|
pACE++;
|
|
}
|
|
}
|
|
return size;
|
|
}
|
|
|
|
static __u16 convert_ace_to_cifs_ace(struct cifs_posix_ace *cifs_ace,
|
|
const struct posix_acl_xattr_entry *local_ace)
|
|
{
|
|
__u16 rc = 0; /* 0 = ACL converted ok */
|
|
|
|
cifs_ace->cifs_e_perm = le16_to_cpu(local_ace->e_perm);
|
|
cifs_ace->cifs_e_tag = le16_to_cpu(local_ace->e_tag);
|
|
/* BB is there a better way to handle the large uid? */
|
|
if (local_ace->e_id == cpu_to_le32(-1)) {
|
|
/* Probably no need to le convert -1 on any arch but can not hurt */
|
|
cifs_ace->cifs_uid = cpu_to_le64(-1);
|
|
} else
|
|
cifs_ace->cifs_uid = cpu_to_le64(le32_to_cpu(local_ace->e_id));
|
|
/*
|
|
cifs_dbg(FYI, "perm %d tag %d id %d\n",
|
|
ace->e_perm, ace->e_tag, ace->e_id);
|
|
*/
|
|
return rc;
|
|
}
|
|
|
|
/* Convert ACL from local Linux POSIX xattr to CIFS POSIX ACL wire format */
|
|
static __u16 ACL_to_cifs_posix(char *parm_data, const char *pACL,
|
|
const int buflen, const int acl_type)
|
|
{
|
|
__u16 rc = 0;
|
|
struct cifs_posix_acl *cifs_acl = (struct cifs_posix_acl *)parm_data;
|
|
struct posix_acl_xattr_header *local_acl = (void *)pACL;
|
|
struct posix_acl_xattr_entry *ace = (void *)(local_acl + 1);
|
|
int count;
|
|
int i;
|
|
|
|
if ((buflen == 0) || (pACL == NULL) || (cifs_acl == NULL))
|
|
return 0;
|
|
|
|
count = posix_acl_xattr_count((size_t)buflen);
|
|
cifs_dbg(FYI, "setting acl with %d entries from buf of length %d and version of %d\n",
|
|
count, buflen, le32_to_cpu(local_acl->a_version));
|
|
if (le32_to_cpu(local_acl->a_version) != 2) {
|
|
cifs_dbg(FYI, "unknown POSIX ACL version %d\n",
|
|
le32_to_cpu(local_acl->a_version));
|
|
return 0;
|
|
}
|
|
cifs_acl->version = cpu_to_le16(1);
|
|
if (acl_type == ACL_TYPE_ACCESS) {
|
|
cifs_acl->access_entry_count = cpu_to_le16(count);
|
|
cifs_acl->default_entry_count = cpu_to_le16(0xFFFF);
|
|
} else if (acl_type == ACL_TYPE_DEFAULT) {
|
|
cifs_acl->default_entry_count = cpu_to_le16(count);
|
|
cifs_acl->access_entry_count = cpu_to_le16(0xFFFF);
|
|
} else {
|
|
cifs_dbg(FYI, "unknown ACL type %d\n", acl_type);
|
|
return 0;
|
|
}
|
|
for (i = 0; i < count; i++) {
|
|
rc = convert_ace_to_cifs_ace(&cifs_acl->ace_array[i], &ace[i]);
|
|
if (rc != 0) {
|
|
/* ACE not converted */
|
|
break;
|
|
}
|
|
}
|
|
if (rc == 0) {
|
|
rc = (__u16)(count * sizeof(struct cifs_posix_ace));
|
|
rc += sizeof(struct cifs_posix_acl);
|
|
/* BB add check to make sure ACL does not overflow SMB */
|
|
}
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBGetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *searchName,
|
|
char *acl_inf, const int buflen, const int acl_type,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* SMB_QUERY_POSIX_ACL */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In GetPosixACL (Unix) for path %s\n", searchName);
|
|
|
|
queryAclRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName,
|
|
searchName, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
pSMB->FileName[name_len] = 0;
|
|
pSMB->FileName[name_len+1] = 0;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_qpi_req,
|
|
InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_ACL);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in Query POSIX ACL = %d\n", rc);
|
|
} else {
|
|
/* decode response */
|
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
/* BB also check enough total bytes returned */
|
|
if (rc || get_bcc(&pSMBr->hdr) < 2)
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
rc = cifs_copy_posix_acl(acl_inf,
|
|
(char *)&pSMBr->hdr.Protocol+data_offset,
|
|
buflen, acl_type, count);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto queryAclRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetPosixACL(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *fileName,
|
|
const char *local_acl, const int buflen,
|
|
const int acl_type,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
char *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count, data_count, param_offset, offset;
|
|
|
|
cifs_dbg(FYI, "In SetPosixACL (Unix) for path %s\n", fileName);
|
|
setAclRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB size from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
parm_data = ((char *) &pSMB->hdr.Protocol) + offset;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
|
|
/* convert to on the wire format for POSIX ACL */
|
|
data_count = ACL_to_cifs_posix(parm_data, local_acl, buflen, acl_type);
|
|
|
|
if (data_count == 0) {
|
|
rc = -EOPNOTSUPP;
|
|
goto setACLerrorExit;
|
|
}
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_POSIX_ACL);
|
|
byte_count = 3 /* pad */ + params + data_count;
|
|
pSMB->DataCount = cpu_to_le16(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Set POSIX ACL returned %d\n", rc);
|
|
|
|
setACLerrorExit:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto setAclRetry;
|
|
return rc;
|
|
}
|
|
|
|
/* BB fix tabs in this function FIXME BB */
|
|
int
|
|
CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const int netfid, __u64 *pExtAttrBits, __u64 *pMask)
|
|
{
|
|
int rc = 0;
|
|
struct smb_t2_qfi_req *pSMB = NULL;
|
|
struct smb_t2_qfi_rsp *pSMBr = NULL;
|
|
int bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In GetExtAttr\n");
|
|
if (tcon == NULL)
|
|
return -ENODEV;
|
|
|
|
GetExtAttrRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2 /* level */ + 2 /* fid */;
|
|
pSMB->t2.TotalDataCount = 0;
|
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->t2.MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->t2.MaxSetupCount = 0;
|
|
pSMB->t2.Reserved = 0;
|
|
pSMB->t2.Flags = 0;
|
|
pSMB->t2.Timeout = 0;
|
|
pSMB->t2.Reserved2 = 0;
|
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
|
|
Fid) - 4);
|
|
pSMB->t2.DataCount = 0;
|
|
pSMB->t2.DataOffset = 0;
|
|
pSMB->t2.SetupCount = 1;
|
|
pSMB->t2.Reserved3 = 0;
|
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_ATTR_FLAGS);
|
|
pSMB->Pad = 0;
|
|
pSMB->Fid = netfid;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "error %d in GetExtAttr\n", rc);
|
|
} else {
|
|
/* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
/* BB also check enough total bytes returned */
|
|
if (rc || get_bcc(&pSMBr->hdr) < 2)
|
|
/* If rc should we check for EOPNOSUPP and
|
|
disable the srvino flag? or in caller? */
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
struct file_chattr_info *pfinfo;
|
|
/* BB Do we need a cast or hash here ? */
|
|
if (count != 16) {
|
|
cifs_dbg(FYI, "Illegal size ret in GetExtAttr\n");
|
|
rc = -EIO;
|
|
goto GetExtAttrOut;
|
|
}
|
|
pfinfo = (struct file_chattr_info *)
|
|
(data_offset + (char *) &pSMBr->hdr.Protocol);
|
|
*pExtAttrBits = le64_to_cpu(pfinfo->mode);
|
|
*pMask = le64_to_cpu(pfinfo->mask);
|
|
}
|
|
}
|
|
GetExtAttrOut:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto GetExtAttrRetry;
|
|
return rc;
|
|
}
|
|
|
|
#endif /* CONFIG_POSIX */
|
|
|
|
#ifdef CONFIG_CIFS_ACL
|
|
/*
|
|
* Initialize NT TRANSACT SMB into small smb request buffer. This assumes that
|
|
* all NT TRANSACTS that we init here have total parm and data under about 400
|
|
* bytes (to fit in small cifs buffer size), which is the case so far, it
|
|
* easily fits. NB: Setup words themselves and ByteCount MaxSetupCount (size of
|
|
* returned setup area) and MaxParameterCount (returned parms size) must be set
|
|
* by caller
|
|
*/
|
|
static int
|
|
smb_init_nttransact(const __u16 sub_command, const int setup_count,
|
|
const int parm_len, struct cifs_tcon *tcon,
|
|
void **ret_buf)
|
|
{
|
|
int rc;
|
|
__u32 temp_offset;
|
|
struct smb_com_ntransact_req *pSMB;
|
|
|
|
rc = small_smb_init(SMB_COM_NT_TRANSACT, 19 + setup_count, tcon,
|
|
(void **)&pSMB);
|
|
if (rc)
|
|
return rc;
|
|
*ret_buf = (void *)pSMB;
|
|
pSMB->Reserved = 0;
|
|
pSMB->TotalParameterCount = cpu_to_le32(parm_len);
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->DataCount = pSMB->TotalDataCount;
|
|
temp_offset = offsetof(struct smb_com_ntransact_req, Parms) +
|
|
(setup_count * 2) - 4 /* for rfc1001 length itself */;
|
|
pSMB->ParameterOffset = cpu_to_le32(temp_offset);
|
|
pSMB->DataOffset = cpu_to_le32(temp_offset + parm_len);
|
|
pSMB->SetupCount = setup_count; /* no need to le convert byte fields */
|
|
pSMB->SubCommand = cpu_to_le16(sub_command);
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
validate_ntransact(char *buf, char **ppparm, char **ppdata,
|
|
__u32 *pparmlen, __u32 *pdatalen)
|
|
{
|
|
char *end_of_smb;
|
|
__u32 data_count, data_offset, parm_count, parm_offset;
|
|
struct smb_com_ntransact_rsp *pSMBr;
|
|
u16 bcc;
|
|
|
|
*pdatalen = 0;
|
|
*pparmlen = 0;
|
|
|
|
if (buf == NULL)
|
|
return -EINVAL;
|
|
|
|
pSMBr = (struct smb_com_ntransact_rsp *)buf;
|
|
|
|
bcc = get_bcc(&pSMBr->hdr);
|
|
end_of_smb = 2 /* sizeof byte count */ + bcc +
|
|
(char *)&pSMBr->ByteCount;
|
|
|
|
data_offset = le32_to_cpu(pSMBr->DataOffset);
|
|
data_count = le32_to_cpu(pSMBr->DataCount);
|
|
parm_offset = le32_to_cpu(pSMBr->ParameterOffset);
|
|
parm_count = le32_to_cpu(pSMBr->ParameterCount);
|
|
|
|
*ppparm = (char *)&pSMBr->hdr.Protocol + parm_offset;
|
|
*ppdata = (char *)&pSMBr->hdr.Protocol + data_offset;
|
|
|
|
/* should we also check that parm and data areas do not overlap? */
|
|
if (*ppparm > end_of_smb) {
|
|
cifs_dbg(FYI, "parms start after end of smb\n");
|
|
return -EINVAL;
|
|
} else if (parm_count + *ppparm > end_of_smb) {
|
|
cifs_dbg(FYI, "parm end after end of smb\n");
|
|
return -EINVAL;
|
|
} else if (*ppdata > end_of_smb) {
|
|
cifs_dbg(FYI, "data starts after end of smb\n");
|
|
return -EINVAL;
|
|
} else if (data_count + *ppdata > end_of_smb) {
|
|
cifs_dbg(FYI, "data %p + count %d (%p) past smb end %p start %p\n",
|
|
*ppdata, data_count, (data_count + *ppdata),
|
|
end_of_smb, pSMBr);
|
|
return -EINVAL;
|
|
} else if (parm_count + data_count > bcc) {
|
|
cifs_dbg(FYI, "parm count and data count larger than SMB\n");
|
|
return -EINVAL;
|
|
}
|
|
*pdatalen = data_count;
|
|
*pparmlen = parm_count;
|
|
return 0;
|
|
}
|
|
|
|
/* Get Security Descriptor (by handle) from remote server for a file or dir */
|
|
int
|
|
CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid,
|
|
struct cifs_ntsd **acl_inf, __u32 *pbuflen)
|
|
{
|
|
int rc = 0;
|
|
int buf_type = 0;
|
|
QUERY_SEC_DESC_REQ *pSMB;
|
|
struct kvec iov[1];
|
|
struct kvec rsp_iov;
|
|
|
|
cifs_dbg(FYI, "GetCifsACL\n");
|
|
|
|
*pbuflen = 0;
|
|
*acl_inf = NULL;
|
|
|
|
rc = smb_init_nttransact(NT_TRANSACT_QUERY_SECURITY_DESC, 0,
|
|
8 /* parm len */, tcon, (void **) &pSMB);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le32(4);
|
|
/* BB TEST with big acls that might need to be e.g. larger than 16K */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->AclFlags = cpu_to_le32(CIFS_ACL_OWNER | CIFS_ACL_GROUP |
|
|
CIFS_ACL_DACL);
|
|
pSMB->ByteCount = cpu_to_le16(11); /* 3 bytes pad + 8 bytes parm */
|
|
inc_rfc1001_len(pSMB, 11);
|
|
iov[0].iov_base = (char *)pSMB;
|
|
iov[0].iov_len = be32_to_cpu(pSMB->hdr.smb_buf_length) + 4;
|
|
|
|
rc = SendReceive2(xid, tcon->ses, iov, 1 /* num iovec */, &buf_type,
|
|
0, &rsp_iov);
|
|
cifs_small_buf_release(pSMB);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_acl_get);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QuerySecDesc = %d\n", rc);
|
|
} else { /* decode response */
|
|
__le32 *parm;
|
|
__u32 parm_len;
|
|
__u32 acl_len;
|
|
struct smb_com_ntransact_rsp *pSMBr;
|
|
char *pdata;
|
|
|
|
/* validate_nttransact */
|
|
rc = validate_ntransact(rsp_iov.iov_base, (char **)&parm,
|
|
&pdata, &parm_len, pbuflen);
|
|
if (rc)
|
|
goto qsec_out;
|
|
pSMBr = (struct smb_com_ntransact_rsp *)rsp_iov.iov_base;
|
|
|
|
cifs_dbg(FYI, "smb %p parm %p data %p\n",
|
|
pSMBr, parm, *acl_inf);
|
|
|
|
if (le32_to_cpu(pSMBr->ParameterCount) != 4) {
|
|
rc = -EIO; /* bad smb */
|
|
*pbuflen = 0;
|
|
goto qsec_out;
|
|
}
|
|
|
|
/* BB check that data area is minimum length and as big as acl_len */
|
|
|
|
acl_len = le32_to_cpu(*parm);
|
|
if (acl_len != *pbuflen) {
|
|
cifs_dbg(VFS, "acl length %d does not match %d\n",
|
|
acl_len, *pbuflen);
|
|
if (*pbuflen > acl_len)
|
|
*pbuflen = acl_len;
|
|
}
|
|
|
|
/* check if buffer is big enough for the acl
|
|
header followed by the smallest SID */
|
|
if ((*pbuflen < sizeof(struct cifs_ntsd) + 8) ||
|
|
(*pbuflen >= 64 * 1024)) {
|
|
cifs_dbg(VFS, "bad acl length %d\n", *pbuflen);
|
|
rc = -EINVAL;
|
|
*pbuflen = 0;
|
|
} else {
|
|
*acl_inf = kmemdup(pdata, *pbuflen, GFP_KERNEL);
|
|
if (*acl_inf == NULL) {
|
|
*pbuflen = 0;
|
|
rc = -ENOMEM;
|
|
}
|
|
}
|
|
}
|
|
qsec_out:
|
|
free_rsp_buf(buf_type, rsp_iov.iov_base);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, __u16 fid,
|
|
struct cifs_ntsd *pntsd, __u32 acllen, int aclflag)
|
|
{
|
|
__u16 byte_count, param_count, data_count, param_offset, data_offset;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
SET_SEC_DESC_REQ *pSMB = NULL;
|
|
void *pSMBr;
|
|
|
|
setCifsAclRetry:
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 19, tcon, (void **) &pSMB, &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
|
|
param_count = 8;
|
|
param_offset = offsetof(struct smb_com_transaction_ssec_req, Fid) - 4;
|
|
data_count = acllen;
|
|
data_offset = param_offset + param_count;
|
|
byte_count = 3 /* pad */ + param_count;
|
|
|
|
pSMB->DataCount = cpu_to_le32(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->MaxParameterCount = cpu_to_le32(4);
|
|
pSMB->MaxDataCount = cpu_to_le32(16384);
|
|
pSMB->ParameterCount = cpu_to_le32(param_count);
|
|
pSMB->ParameterOffset = cpu_to_le32(param_offset);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->DataOffset = cpu_to_le32(data_offset);
|
|
pSMB->SetupCount = 0;
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_SET_SECURITY_DESC);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count+data_count);
|
|
|
|
pSMB->Fid = fid; /* file handle always le */
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->AclFlags = cpu_to_le32(aclflag);
|
|
|
|
if (pntsd && acllen) {
|
|
memcpy((char *)pSMBr + offsetof(struct smb_hdr, Protocol) +
|
|
data_offset, pntsd, acllen);
|
|
inc_rfc1001_len(pSMB, byte_count + data_count);
|
|
} else
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
|
|
cifs_dbg(FYI, "SetCIFSACL bytes_returned: %d, rc: %d\n",
|
|
bytes_returned, rc);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Set CIFS ACL returned %d\n", rc);
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto setCifsAclRetry;
|
|
|
|
return (rc);
|
|
}
|
|
|
|
#endif /* CONFIG_CIFS_ACL */
|
|
|
|
/* Legacy Query Path Information call for lookup to old servers such
|
|
as Win9x/WinME */
|
|
int
|
|
SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *search_name, FILE_ALL_INFO *data,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
QUERY_INFORMATION_REQ *pSMB;
|
|
QUERY_INFORMATION_RSP *pSMBr;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cifs_dbg(FYI, "In SMBQPath path %s\n", search_name);
|
|
QInfRetry:
|
|
rc = smb_init(SMB_COM_QUERY_INFORMATION, 0, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName,
|
|
search_name, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else {
|
|
name_len = strnlen(search_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, search_name, name_len);
|
|
}
|
|
pSMB->BufferFormat = 0x04;
|
|
name_len++; /* account for buffer type byte */
|
|
inc_rfc1001_len(pSMB, (__u16)name_len);
|
|
pSMB->ByteCount = cpu_to_le16(name_len);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QueryInfo = %d\n", rc);
|
|
} else if (data) {
|
|
struct timespec ts;
|
|
__u32 time = le32_to_cpu(pSMBr->last_write_time);
|
|
|
|
/* decode response */
|
|
/* BB FIXME - add time zone adjustment BB */
|
|
memset(data, 0, sizeof(FILE_ALL_INFO));
|
|
ts.tv_nsec = 0;
|
|
ts.tv_sec = time;
|
|
/* decode time fields */
|
|
data->ChangeTime = cpu_to_le64(cifs_UnixTimeToNT(ts));
|
|
data->LastWriteTime = data->ChangeTime;
|
|
data->LastAccessTime = 0;
|
|
data->AllocationSize =
|
|
cpu_to_le64(le32_to_cpu(pSMBr->size));
|
|
data->EndOfFile = data->AllocationSize;
|
|
data->Attributes =
|
|
cpu_to_le32(le16_to_cpu(pSMBr->attr));
|
|
} else
|
|
rc = -EIO; /* bad buffer passed in */
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QInfRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
u16 netfid, FILE_ALL_INFO *pFindData)
|
|
{
|
|
struct smb_t2_qfi_req *pSMB = NULL;
|
|
struct smb_t2_qfi_rsp *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
QFileInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2 /* level */ + 2 /* fid */;
|
|
pSMB->t2.TotalDataCount = 0;
|
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
|
|
pSMB->t2.MaxSetupCount = 0;
|
|
pSMB->t2.Reserved = 0;
|
|
pSMB->t2.Flags = 0;
|
|
pSMB->t2.Timeout = 0;
|
|
pSMB->t2.Reserved2 = 0;
|
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
|
|
Fid) - 4);
|
|
pSMB->t2.DataCount = 0;
|
|
pSMB->t2.DataOffset = 0;
|
|
pSMB->t2.SetupCount = 1;
|
|
pSMB->t2.Reserved3 = 0;
|
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
|
|
pSMB->Pad = 0;
|
|
pSMB->Fid = netfid;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QFileInfo = %d", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc) /* BB add auto retry on EOPNOTSUPP? */
|
|
rc = -EIO;
|
|
else if (get_bcc(&pSMBr->hdr) < 40)
|
|
rc = -EIO; /* bad smb */
|
|
else if (pFindData) {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset, sizeof(FILE_ALL_INFO));
|
|
} else
|
|
rc = -ENOMEM;
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QFileInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *search_name, FILE_ALL_INFO *data,
|
|
int legacy /* old style infolevel */,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* level 263 SMB_QUERY_FILE_ALL_INFO */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
/* cifs_dbg(FYI, "In QPathInfo path %s\n", search_name); */
|
|
QPathInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, search_name,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(search_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, search_name, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
if (legacy)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_STANDARD);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_ALL_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QPathInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc) /* BB add auto retry on EOPNOTSUPP? */
|
|
rc = -EIO;
|
|
else if (!legacy && get_bcc(&pSMBr->hdr) < 40)
|
|
rc = -EIO; /* bad smb */
|
|
else if (legacy && get_bcc(&pSMBr->hdr) < 24)
|
|
rc = -EIO; /* 24 or 26 expected but we do not read
|
|
last field */
|
|
else if (data) {
|
|
int size;
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
/*
|
|
* On legacy responses we do not read the last field,
|
|
* EAsize, fortunately since it varies by subdialect and
|
|
* also note it differs on Set vs Get, ie two bytes or 4
|
|
* bytes depending but we don't care here.
|
|
*/
|
|
if (legacy)
|
|
size = sizeof(FILE_INFO_STANDARD);
|
|
else
|
|
size = sizeof(FILE_ALL_INFO);
|
|
memcpy((char *) data, (char *) &pSMBr->hdr.Protocol +
|
|
data_offset, size);
|
|
} else
|
|
rc = -ENOMEM;
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QPathInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
u16 netfid, FILE_UNIX_BASIC_INFO *pFindData)
|
|
{
|
|
struct smb_t2_qfi_req *pSMB = NULL;
|
|
struct smb_t2_qfi_rsp *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
UnixQFileInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2 /* level */ + 2 /* fid */;
|
|
pSMB->t2.TotalDataCount = 0;
|
|
pSMB->t2.MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->t2.MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
|
|
pSMB->t2.MaxSetupCount = 0;
|
|
pSMB->t2.Reserved = 0;
|
|
pSMB->t2.Flags = 0;
|
|
pSMB->t2.Timeout = 0;
|
|
pSMB->t2.Reserved2 = 0;
|
|
pSMB->t2.ParameterOffset = cpu_to_le16(offsetof(struct smb_t2_qfi_req,
|
|
Fid) - 4);
|
|
pSMB->t2.DataCount = 0;
|
|
pSMB->t2.DataOffset = 0;
|
|
pSMB->t2.SetupCount = 1;
|
|
pSMB->t2.Reserved3 = 0;
|
|
pSMB->t2.SubCommand = cpu_to_le16(TRANS2_QUERY_FILE_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->t2.TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->t2.ParameterCount = pSMB->t2.TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
|
|
pSMB->Pad = 0;
|
|
pSMB->Fid = netfid;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->t2.ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in UnixQFileInfo = %d", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
|
|
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n");
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset,
|
|
sizeof(FILE_UNIX_BASIC_INFO));
|
|
}
|
|
}
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto UnixQFileInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixQPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *searchName,
|
|
FILE_UNIX_BASIC_INFO *pFindData,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* SMB_QUERY_FILE_UNIX_BASIC */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QPathInfo (Unix) the path %s\n", searchName);
|
|
UnixQPathInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_UNIX_BASIC);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in UnixQPathInfo = %d", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < sizeof(FILE_UNIX_BASIC_INFO)) {
|
|
cifs_dbg(VFS, "Malformed FILE_UNIX_BASIC_INFO response. Unix Extensions can be disabled on mount by specifying the nosfu mount option.\n");
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
memcpy((char *) pFindData,
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
data_offset,
|
|
sizeof(FILE_UNIX_BASIC_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto UnixQPathInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* xid, tcon, searchName and codepage are input parms, rest are returned */
|
|
int
|
|
CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *searchName, struct cifs_sb_info *cifs_sb,
|
|
__u16 *pnetfid, __u16 search_flags,
|
|
struct cifs_search_info *psrch_inf, bool msearch)
|
|
{
|
|
/* level 257 SMB_ */
|
|
TRANSACTION2_FFIRST_REQ *pSMB = NULL;
|
|
TRANSACTION2_FFIRST_RSP *pSMBr = NULL;
|
|
T2_FFIRST_RSP_PARMS *parms;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int name_len, remap;
|
|
__u16 params, byte_count;
|
|
struct nls_table *nls_codepage;
|
|
|
|
cifs_dbg(FYI, "In FindFirst for %s\n", searchName);
|
|
|
|
findFirstRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
nls_codepage = cifs_sb->local_nls;
|
|
remap = cifs_remap(cifs_sb);
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
/* We can not add the asterik earlier in case
|
|
it got remapped to 0xF03A as if it were part of the
|
|
directory name instead of a wildcard */
|
|
name_len *= 2;
|
|
if (msearch) {
|
|
pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb);
|
|
pSMB->FileName[name_len+1] = 0;
|
|
pSMB->FileName[name_len+2] = '*';
|
|
pSMB->FileName[name_len+3] = 0;
|
|
name_len += 4; /* now the trailing null */
|
|
/* null terminate just in case */
|
|
pSMB->FileName[name_len] = 0;
|
|
pSMB->FileName[name_len+1] = 0;
|
|
name_len += 2;
|
|
}
|
|
} else { /* BB add check for overrun of SMB buf BB */
|
|
name_len = strnlen(searchName, PATH_MAX);
|
|
/* BB fix here and in unicode clause above ie
|
|
if (name_len > buffersize-header)
|
|
free buffer exit; BB */
|
|
strncpy(pSMB->FileName, searchName, name_len);
|
|
if (msearch) {
|
|
pSMB->FileName[name_len] = CIFS_DIR_SEP(cifs_sb);
|
|
pSMB->FileName[name_len+1] = '*';
|
|
pSMB->FileName[name_len+2] = 0;
|
|
name_len += 3;
|
|
}
|
|
}
|
|
|
|
params = 12 + name_len /* includes null */ ;
|
|
pSMB->TotalDataCount = 0; /* no EAs */
|
|
pSMB->MaxParameterCount = cpu_to_le16(10);
|
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_ffirst_req, SearchAttributes)
|
|
- 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1; /* one byte, no need to make endian neutral */
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_FIRST);
|
|
pSMB->SearchAttributes =
|
|
cpu_to_le16(ATTR_READONLY | ATTR_HIDDEN | ATTR_SYSTEM |
|
|
ATTR_DIRECTORY);
|
|
pSMB->SearchCount = cpu_to_le16(CIFSMaxBufSize/sizeof(FILE_UNIX_INFO));
|
|
pSMB->SearchFlags = cpu_to_le16(search_flags);
|
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
|
|
|
|
/* BB what should we set StorageType to? Does it matter? BB */
|
|
pSMB->SearchStorageType = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_ffirst);
|
|
|
|
if (rc) {/* BB add logic to retry regular search if Unix search
|
|
rejected unexpectedly by server */
|
|
/* BB Add code to handle unsupported level rc */
|
|
cifs_dbg(FYI, "Error in FindFirst = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
/* BB eventually could optimize out free and realloc of buf */
|
|
/* for this case */
|
|
if (rc == -EAGAIN)
|
|
goto findFirstRetry;
|
|
} else { /* decode response */
|
|
/* BB remember to free buffer if error BB */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc == 0) {
|
|
unsigned int lnoff;
|
|
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
psrch_inf->unicode = true;
|
|
else
|
|
psrch_inf->unicode = false;
|
|
|
|
psrch_inf->ntwrk_buf_start = (char *)pSMBr;
|
|
psrch_inf->smallBuf = 0;
|
|
psrch_inf->srch_entries_start =
|
|
(char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
parms = (T2_FFIRST_RSP_PARMS *)((char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.ParameterOffset));
|
|
|
|
if (parms->EndofSearch)
|
|
psrch_inf->endOfSearch = true;
|
|
else
|
|
psrch_inf->endOfSearch = false;
|
|
|
|
psrch_inf->entries_in_buffer =
|
|
le16_to_cpu(parms->SearchCount);
|
|
psrch_inf->index_of_last_entry = 2 /* skip . and .. */ +
|
|
psrch_inf->entries_in_buffer;
|
|
lnoff = le16_to_cpu(parms->LastNameOffset);
|
|
if (CIFSMaxBufSize < lnoff) {
|
|
cifs_dbg(VFS, "ignoring corrupt resume name\n");
|
|
psrch_inf->last_entry = NULL;
|
|
return rc;
|
|
}
|
|
|
|
psrch_inf->last_entry = psrch_inf->srch_entries_start +
|
|
lnoff;
|
|
|
|
if (pnetfid)
|
|
*pnetfid = parms->SearchHandle;
|
|
} else {
|
|
cifs_buf_release(pSMB);
|
|
}
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon,
|
|
__u16 searchHandle, __u16 search_flags,
|
|
struct cifs_search_info *psrch_inf)
|
|
{
|
|
TRANSACTION2_FNEXT_REQ *pSMB = NULL;
|
|
TRANSACTION2_FNEXT_RSP *pSMBr = NULL;
|
|
T2_FNEXT_RSP_PARMS *parms;
|
|
char *response_data;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
unsigned int name_len;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In FindNext\n");
|
|
|
|
if (psrch_inf->endOfSearch)
|
|
return -ENOENT;
|
|
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 14; /* includes 2 bytes of null string, converted to LE below*/
|
|
byte_count = 0;
|
|
pSMB->TotalDataCount = 0; /* no EAs */
|
|
pSMB->MaxParameterCount = cpu_to_le16(8);
|
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(
|
|
offsetof(struct smb_com_transaction2_fnext_req,SearchHandle) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_FIND_NEXT);
|
|
pSMB->SearchHandle = searchHandle; /* always kept as le */
|
|
pSMB->SearchCount =
|
|
cpu_to_le16(CIFSMaxBufSize / sizeof(FILE_UNIX_INFO));
|
|
pSMB->InformationLevel = cpu_to_le16(psrch_inf->info_level);
|
|
pSMB->ResumeKey = psrch_inf->resume_key;
|
|
pSMB->SearchFlags = cpu_to_le16(search_flags);
|
|
|
|
name_len = psrch_inf->resume_name_len;
|
|
params += name_len;
|
|
if (name_len < PATH_MAX) {
|
|
memcpy(pSMB->ResumeFileName, psrch_inf->presume_name, name_len);
|
|
byte_count += name_len;
|
|
/* 14 byte parm len above enough for 2 byte null terminator */
|
|
pSMB->ResumeFileName[name_len] = 0;
|
|
pSMB->ResumeFileName[name_len+1] = 0;
|
|
} else {
|
|
rc = -EINVAL;
|
|
goto FNext2_err_exit;
|
|
}
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_fnext);
|
|
if (rc) {
|
|
if (rc == -EBADF) {
|
|
psrch_inf->endOfSearch = true;
|
|
cifs_buf_release(pSMB);
|
|
rc = 0; /* search probably was closed at end of search*/
|
|
} else
|
|
cifs_dbg(FYI, "FindNext returned = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc == 0) {
|
|
unsigned int lnoff;
|
|
|
|
/* BB fixme add lock for file (srch_info) struct here */
|
|
if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
|
|
psrch_inf->unicode = true;
|
|
else
|
|
psrch_inf->unicode = false;
|
|
response_data = (char *) &pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.ParameterOffset);
|
|
parms = (T2_FNEXT_RSP_PARMS *)response_data;
|
|
response_data = (char *)&pSMBr->hdr.Protocol +
|
|
le16_to_cpu(pSMBr->t2.DataOffset);
|
|
if (psrch_inf->smallBuf)
|
|
cifs_small_buf_release(
|
|
psrch_inf->ntwrk_buf_start);
|
|
else
|
|
cifs_buf_release(psrch_inf->ntwrk_buf_start);
|
|
psrch_inf->srch_entries_start = response_data;
|
|
psrch_inf->ntwrk_buf_start = (char *)pSMB;
|
|
psrch_inf->smallBuf = 0;
|
|
if (parms->EndofSearch)
|
|
psrch_inf->endOfSearch = true;
|
|
else
|
|
psrch_inf->endOfSearch = false;
|
|
psrch_inf->entries_in_buffer =
|
|
le16_to_cpu(parms->SearchCount);
|
|
psrch_inf->index_of_last_entry +=
|
|
psrch_inf->entries_in_buffer;
|
|
lnoff = le16_to_cpu(parms->LastNameOffset);
|
|
if (CIFSMaxBufSize < lnoff) {
|
|
cifs_dbg(VFS, "ignoring corrupt resume name\n");
|
|
psrch_inf->last_entry = NULL;
|
|
return rc;
|
|
} else
|
|
psrch_inf->last_entry =
|
|
psrch_inf->srch_entries_start + lnoff;
|
|
|
|
/* cifs_dbg(FYI, "fnxt2 entries in buf %d index_of_last %d\n",
|
|
psrch_inf->entries_in_buffer, psrch_inf->index_of_last_entry); */
|
|
|
|
/* BB fixme add unlock here */
|
|
}
|
|
|
|
}
|
|
|
|
/* BB On error, should we leave previous search buf (and count and
|
|
last entry fields) intact or free the previous one? */
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
FNext2_err_exit:
|
|
if (rc != 0)
|
|
cifs_buf_release(pSMB);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const __u16 searchHandle)
|
|
{
|
|
int rc = 0;
|
|
FINDCLOSE_REQ *pSMB = NULL;
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBFindClose\n");
|
|
rc = small_smb_init(SMB_COM_FIND_CLOSE2, 1, tcon, (void **)&pSMB);
|
|
|
|
/* no sense returning error if session restarted
|
|
as file handle has been closed */
|
|
if (rc == -EAGAIN)
|
|
return 0;
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->FileID = searchHandle;
|
|
pSMB->ByteCount = 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc)
|
|
cifs_dbg(VFS, "Send error in FindClose = %d\n", rc);
|
|
|
|
cifs_stats_inc(&tcon->stats.cifs_stats.num_fclose);
|
|
|
|
/* Since session is dead, search handle closed on server already */
|
|
if (rc == -EAGAIN)
|
|
rc = 0;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *search_name, __u64 *inode_number,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
int rc = 0;
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int name_len, bytes_returned;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In GetSrvInodeNum for %s\n", search_name);
|
|
if (tcon == NULL)
|
|
return -ENODEV;
|
|
|
|
GetInodeNumberRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName,
|
|
search_name, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(search_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, search_name, name_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* rsrvd */ + name_len /* incl null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max data count below from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FILE_INTERNAL_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "error %d in QueryInternalInfo\n", rc);
|
|
} else {
|
|
/* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
/* BB also check enough total bytes returned */
|
|
if (rc || get_bcc(&pSMBr->hdr) < 2)
|
|
/* If rc should we check for EOPNOSUPP and
|
|
disable the srvino flag? or in caller? */
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
__u16 count = le16_to_cpu(pSMBr->t2.DataCount);
|
|
struct file_internal_info *pfinfo;
|
|
/* BB Do we need a cast or hash here ? */
|
|
if (count < 8) {
|
|
cifs_dbg(FYI, "Illegal size ret in QryIntrnlInf\n");
|
|
rc = -EIO;
|
|
goto GetInodeNumOut;
|
|
}
|
|
pfinfo = (struct file_internal_info *)
|
|
(data_offset + (char *) &pSMBr->hdr.Protocol);
|
|
*inode_number = le64_to_cpu(pfinfo->UniqueId);
|
|
}
|
|
}
|
|
GetInodeNumOut:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto GetInodeNumberRetry;
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses,
|
|
const char *search_name, struct dfs_info3_param **target_nodes,
|
|
unsigned int *num_of_nodes,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
/* TRANS2_GET_DFS_REFERRAL */
|
|
TRANSACTION2_GET_DFS_REFER_REQ *pSMB = NULL;
|
|
TRANSACTION2_GET_DFS_REFER_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
__u16 params, byte_count;
|
|
*num_of_nodes = 0;
|
|
*target_nodes = NULL;
|
|
|
|
cifs_dbg(FYI, "In GetDFSRefer the path %s\n", search_name);
|
|
if (ses == NULL || ses->tcon_ipc == NULL)
|
|
return -ENODEV;
|
|
|
|
getDFSRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
/* server pointer checked in called function,
|
|
but should never be null here anyway */
|
|
pSMB->hdr.Mid = get_next_mid(ses->server);
|
|
pSMB->hdr.Tid = ses->tcon_ipc->tid;
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
if (ses->capabilities & CAP_STATUS32)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_ERR_STATUS;
|
|
if (ses->capabilities & CAP_DFS)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_DFS;
|
|
|
|
if (ses->capabilities & CAP_UNICODE) {
|
|
pSMB->hdr.Flags2 |= SMBFLG2_UNICODE;
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->RequestFileName,
|
|
search_name, PATH_MAX, nls_codepage,
|
|
remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(search_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->RequestFileName, search_name, name_len);
|
|
}
|
|
|
|
if (ses->server->sign)
|
|
pSMB->hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
|
|
|
|
pSMB->hdr.Uid = ses->Suid;
|
|
|
|
params = 2 /* level */ + name_len /*includes null */ ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = 0;
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(4000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_get_dfs_refer_req, MaxReferralLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_GET_DFS_REFERRAL);
|
|
byte_count = params + 3 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->MaxReferralLevel = cpu_to_le16(3);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in GetDFSRefer = %d\n", rc);
|
|
goto GetDFSRefExit;
|
|
}
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
/* BB Also check if enough total bytes returned? */
|
|
if (rc || get_bcc(&pSMBr->hdr) < 17) {
|
|
rc = -EIO; /* bad smb */
|
|
goto GetDFSRefExit;
|
|
}
|
|
|
|
cifs_dbg(FYI, "Decoding GetDFSRefer response BCC: %d Offset %d\n",
|
|
get_bcc(&pSMBr->hdr), le16_to_cpu(pSMBr->t2.DataOffset));
|
|
|
|
/* parse returned result into more usable form */
|
|
rc = parse_dfs_referrals(&pSMBr->dfs_data,
|
|
le16_to_cpu(pSMBr->t2.DataCount),
|
|
num_of_nodes, target_nodes, nls_codepage,
|
|
remap, search_name,
|
|
(pSMBr->hdr.Flags2 & SMBFLG2_UNICODE) != 0);
|
|
|
|
GetDFSRefExit:
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto getDFSRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Query File System Info such as free space to old servers such as Win 9x */
|
|
int
|
|
SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct kstatfs *FSData)
|
|
{
|
|
/* level 0x01 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_ALLOC_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "OldQFSInfo\n");
|
|
oldQFSInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_ALLOCATION);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 18)
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
cifs_dbg(FYI, "qfsinf resp BCC: %d Offset %d\n",
|
|
get_bcc(&pSMBr->hdr), data_offset);
|
|
|
|
response_data = (FILE_SYSTEM_ALLOC_INFO *)
|
|
(((char *) &pSMBr->hdr.Protocol) + data_offset);
|
|
FSData->f_bsize =
|
|
le16_to_cpu(response_data->BytesPerSector) *
|
|
le32_to_cpu(response_data->
|
|
SectorsPerAllocationUnit);
|
|
FSData->f_blocks =
|
|
le32_to_cpu(response_data->TotalAllocationUnits);
|
|
FSData->f_bfree = FSData->f_bavail =
|
|
le32_to_cpu(response_data->FreeAllocationUnits);
|
|
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n",
|
|
(unsigned long long)FSData->f_blocks,
|
|
(unsigned long long)FSData->f_bfree,
|
|
FSData->f_bsize);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto oldQFSInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct kstatfs *FSData)
|
|
{
|
|
/* level 0x103 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QFSInfo\n");
|
|
QFSInfoRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_SIZE_INFO);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QFSInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 24)
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
|
|
response_data =
|
|
(FILE_SYSTEM_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
FSData->f_bsize =
|
|
le32_to_cpu(response_data->BytesPerSector) *
|
|
le32_to_cpu(response_data->
|
|
SectorsPerAllocationUnit);
|
|
FSData->f_blocks =
|
|
le64_to_cpu(response_data->TotalAllocationUnits);
|
|
FSData->f_bfree = FSData->f_bavail =
|
|
le64_to_cpu(response_data->FreeAllocationUnits);
|
|
cifs_dbg(FYI, "Blocks: %lld Free: %lld Block size %ld\n",
|
|
(unsigned long long)FSData->f_blocks,
|
|
(unsigned long long)FSData->f_bfree,
|
|
FSData->f_bsize);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSInfoRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSAttributeInfo(const unsigned int xid, struct cifs_tcon *tcon)
|
|
{
|
|
/* level 0x105 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_ATTRIBUTE_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QFSAttributeInfo\n");
|
|
QFSAttributeRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_ATTRIBUTE_INFO);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "Send error in QFSAttributeInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) {
|
|
/* BB also check if enough bytes returned */
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_ATTRIBUTE_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsAttrInfo, response_data,
|
|
sizeof(FILE_SYSTEM_ATTRIBUTE_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSAttributeRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon)
|
|
{
|
|
/* level 0x104 SMB_QUERY_FILE_SYSTEM_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_DEVICE_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QFSDeviceInfo\n");
|
|
QFSDeviceRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_FS_DEVICE_INFO);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QFSDeviceInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) <
|
|
sizeof(FILE_SYSTEM_DEVICE_INFO))
|
|
rc = -EIO; /* bad smb */
|
|
else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_DEVICE_INFO *)
|
|
(((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsDevInfo, response_data,
|
|
sizeof(FILE_SYSTEM_DEVICE_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSDeviceRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon)
|
|
{
|
|
/* level 0x200 SMB_QUERY_CIFS_UNIX_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_UNIX_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QFSUnixInfo\n");
|
|
QFSUnixRetry:
|
|
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
|
|
(void **) &pSMB, (void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
|
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_CIFS_UNIX_INFO);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "Send error in QFSUnixInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) {
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_UNIX_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
memcpy(&tcon->fsUnixInfo, response_data,
|
|
sizeof(FILE_SYSTEM_UNIX_INFO));
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSUnixRetry;
|
|
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, __u64 cap)
|
|
{
|
|
/* level 0x200 SMB_SET_CIFS_UNIX_INFO */
|
|
TRANSACTION2_SETFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SETFSI_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, offset, byte_count;
|
|
|
|
cifs_dbg(FYI, "In SETFSUnixInfo\n");
|
|
SETFSUnixRetry:
|
|
/* BB switch to small buf init to save memory */
|
|
rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, tcon,
|
|
(void **) &pSMB, (void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 4; /* 2 bytes zero followed by info level. */
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_setfsi_req, FileNum)
|
|
- 4;
|
|
offset = param_offset + params;
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(4);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FS_INFORMATION);
|
|
byte_count = 1 /* pad */ + params + 12;
|
|
|
|
pSMB->DataCount = cpu_to_le16(12);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
|
|
/* Params. */
|
|
pSMB->FileNum = 0;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_CIFS_UNIX_INFO);
|
|
|
|
/* Data. */
|
|
pSMB->ClientUnixMajor = cpu_to_le16(CIFS_UNIX_MAJOR_VERSION);
|
|
pSMB->ClientUnixMinor = cpu_to_le16(CIFS_UNIX_MINOR_VERSION);
|
|
pSMB->ClientUnixCap = cpu_to_le64(cap);
|
|
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(VFS, "Send error in SETFSUnixInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc)
|
|
rc = -EIO; /* bad smb */
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SETFSUnixRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
|
|
int
|
|
CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct kstatfs *FSData)
|
|
{
|
|
/* level 0x201 SMB_QUERY_CIFS_POSIX_INFO */
|
|
TRANSACTION2_QFSI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QFSI_RSP *pSMBr = NULL;
|
|
FILE_SYSTEM_POSIX_INFO *response_data;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, byte_count;
|
|
|
|
cifs_dbg(FYI, "In QFSPosixInfo\n");
|
|
QFSPosixRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
params = 2; /* level */
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(struct
|
|
smb_com_transaction2_qfsi_req, InformationLevel) - 4);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_FS_INFORMATION);
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_QUERY_POSIX_FS_INFO);
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QFSUnixInfo = %d\n", rc);
|
|
} else { /* decode response */
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
|
|
if (rc || get_bcc(&pSMBr->hdr) < 13) {
|
|
rc = -EIO; /* bad smb */
|
|
} else {
|
|
__u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
response_data =
|
|
(FILE_SYSTEM_POSIX_INFO
|
|
*) (((char *) &pSMBr->hdr.Protocol) +
|
|
data_offset);
|
|
FSData->f_bsize =
|
|
le32_to_cpu(response_data->BlockSize);
|
|
FSData->f_blocks =
|
|
le64_to_cpu(response_data->TotalBlocks);
|
|
FSData->f_bfree =
|
|
le64_to_cpu(response_data->BlocksAvail);
|
|
if (response_data->UserBlocksAvail == cpu_to_le64(-1)) {
|
|
FSData->f_bavail = FSData->f_bfree;
|
|
} else {
|
|
FSData->f_bavail =
|
|
le64_to_cpu(response_data->UserBlocksAvail);
|
|
}
|
|
if (response_data->TotalFileNodes != cpu_to_le64(-1))
|
|
FSData->f_files =
|
|
le64_to_cpu(response_data->TotalFileNodes);
|
|
if (response_data->FreeFileNodes != cpu_to_le64(-1))
|
|
FSData->f_ffree =
|
|
le64_to_cpu(response_data->FreeFileNodes);
|
|
}
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto QFSPosixRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
|
|
/*
|
|
* We can not use write of zero bytes trick to set file size due to need for
|
|
* large file support. Also note that this SetPathInfo is preferred to
|
|
* SetFileInfo based method in next routine which is only needed to work around
|
|
* a sharing violation bugin Samba which this routine can run into.
|
|
*/
|
|
int
|
|
CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *file_name, __u64 size, struct cifs_sb_info *cifs_sb,
|
|
bool set_allocation)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
struct file_end_of_file_info *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
__u16 params, byte_count, data_count, param_offset, offset;
|
|
|
|
cifs_dbg(FYI, "In SetEOF\n");
|
|
SetEOFRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name,
|
|
PATH_MAX, cifs_sb->local_nls, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(file_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, file_name, name_len);
|
|
}
|
|
params = 6 + name_len;
|
|
data_count = sizeof(struct file_end_of_file_info);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
pSMB->MaxDataCount = cpu_to_le16(4100);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
if (set_allocation) {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
|
|
} else /* Set File Size */ {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
|
|
}
|
|
|
|
parm_data =
|
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol) +
|
|
offset);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + data_count;
|
|
pSMB->DataCount = cpu_to_le16(data_count);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
parm_data->FileSize = cpu_to_le64(size);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "SetPathInfo (file size) returned %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetEOFRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifsFileInfo *cfile, __u64 size, bool set_allocation)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
struct file_end_of_file_info *parm_data;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cifs_dbg(FYI, "SetFileSize (via SetFileInfo) %lld\n",
|
|
(long long)size);
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)cfile->pid);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(cfile->pid >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
count = sizeof(struct file_end_of_file_info);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
parm_data =
|
|
(struct file_end_of_file_info *) (((char *) &pSMB->hdr.Protocol)
|
|
+ offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
parm_data->FileSize = cpu_to_le64(size);
|
|
pSMB->Fid = cfile->fid.netfid;
|
|
if (set_allocation) {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_ALLOCATION_INFO);
|
|
} else /* Set File Size */ {
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO2);
|
|
else
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_END_OF_FILE_INFO);
|
|
}
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in SetFileInfo (SetFileSize) = %d\n",
|
|
rc);
|
|
}
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Some legacy servers such as NT4 require that the file times be set on
|
|
an open handle, rather than by pathname - this is awkward due to
|
|
potential access conflicts on the open, but it is unavoidable for these
|
|
old servers since the only other choice is to go from 100 nanosecond DCE
|
|
time and resort to the original setpathinfo level which takes the ancient
|
|
DOS time format with 2 second granularity */
|
|
int
|
|
CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const FILE_BASIC_INFO *data, __u16 fid, __u32 pid_of_opener)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cifs_dbg(FYI, "Set Times (via SetFileInfo)\n");
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *)pSMB +
|
|
offsetof(struct smb_hdr, Protocol) + offset;
|
|
|
|
count = sizeof(FILE_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = fid;
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n",
|
|
rc);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetFileDisposition(const unsigned int xid, struct cifs_tcon *tcon,
|
|
bool delete_file, __u16 fid, __u32 pid_of_opener)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
int rc = 0;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cifs_dbg(FYI, "Set File Disposition (via SetFileInfo)\n");
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
|
|
count = 1;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = fid;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_DISPOSITION_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
*data_offset = delete_file ? 1 : 0;
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in SetFileDisposition = %d\n", rc);
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fileName, const FILE_BASIC_INFO *data,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
char *data_offset;
|
|
__u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cifs_dbg(FYI, "In SetTimes\n");
|
|
|
|
SetTimesRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(FILE_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
data_offset = (char *) (&pSMB->hdr.Protocol) + offset;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
if (tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO2);
|
|
else
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_BASIC_INFO);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
memcpy(data_offset, data, sizeof(FILE_BASIC_INFO));
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "SetPathInfo (times) returned %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetTimesRetry;
|
|
|
|
return rc;
|
|
}
|
|
|
|
/* Can not be used to set time stamps yet (due to old DOS time format) */
|
|
/* Can be used to set attributes */
|
|
#if 0 /* Possibly not needed - since it turns out that strangely NT4 has a bug
|
|
handling it anyway and NT4 was what we thought it would be needed for
|
|
Do not delete it until we prove whether needed for Win9x though */
|
|
int
|
|
CIFSSMBSetAttrLegacy(unsigned int xid, struct cifs_tcon *tcon, char *fileName,
|
|
__u16 dos_attrs, const struct nls_table *nls_codepage)
|
|
{
|
|
SETATTR_REQ *pSMB = NULL;
|
|
SETATTR_RSP *pSMBr = NULL;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int name_len;
|
|
|
|
cifs_dbg(FYI, "In SetAttrLegacy\n");
|
|
|
|
SetAttrLgcyRetry:
|
|
rc = smb_init(SMB_COM_SETATTR, 8, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
ConvertToUTF16((__le16 *) pSMB->fileName, fileName,
|
|
PATH_MAX, nls_codepage);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->fileName, fileName, name_len);
|
|
}
|
|
pSMB->attr = cpu_to_le16(dos_attrs);
|
|
pSMB->BufferFormat = 0x04;
|
|
inc_rfc1001_len(pSMB, name_len + 1);
|
|
pSMB->ByteCount = cpu_to_le16(name_len + 1);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Error in LegacySetAttr = %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetAttrLgcyRetry;
|
|
|
|
return rc;
|
|
}
|
|
#endif /* temporarily unneeded SetAttr legacy function */
|
|
|
|
static void
|
|
cifs_fill_unix_set_info(FILE_UNIX_BASIC_INFO *data_offset,
|
|
const struct cifs_unix_set_info_args *args)
|
|
{
|
|
u64 uid = NO_CHANGE_64, gid = NO_CHANGE_64;
|
|
u64 mode = args->mode;
|
|
|
|
if (uid_valid(args->uid))
|
|
uid = from_kuid(&init_user_ns, args->uid);
|
|
if (gid_valid(args->gid))
|
|
gid = from_kgid(&init_user_ns, args->gid);
|
|
|
|
/*
|
|
* Samba server ignores set of file size to zero due to bugs in some
|
|
* older clients, but we should be precise - we use SetFileSize to
|
|
* set file size and do not want to truncate file size to zero
|
|
* accidentally as happened on one Samba server beta by putting
|
|
* zero instead of -1 here
|
|
*/
|
|
data_offset->EndOfFile = cpu_to_le64(NO_CHANGE_64);
|
|
data_offset->NumOfBytes = cpu_to_le64(NO_CHANGE_64);
|
|
data_offset->LastStatusChange = cpu_to_le64(args->ctime);
|
|
data_offset->LastAccessTime = cpu_to_le64(args->atime);
|
|
data_offset->LastModificationTime = cpu_to_le64(args->mtime);
|
|
data_offset->Uid = cpu_to_le64(uid);
|
|
data_offset->Gid = cpu_to_le64(gid);
|
|
/* better to leave device as zero when it is */
|
|
data_offset->DevMajor = cpu_to_le64(MAJOR(args->device));
|
|
data_offset->DevMinor = cpu_to_le64(MINOR(args->device));
|
|
data_offset->Permissions = cpu_to_le64(mode);
|
|
|
|
if (S_ISREG(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_FILE);
|
|
else if (S_ISDIR(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_DIR);
|
|
else if (S_ISLNK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_SYMLINK);
|
|
else if (S_ISCHR(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_CHARDEV);
|
|
else if (S_ISBLK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_BLOCKDEV);
|
|
else if (S_ISFIFO(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_FIFO);
|
|
else if (S_ISSOCK(mode))
|
|
data_offset->Type = cpu_to_le32(UNIX_SOCKET);
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const struct cifs_unix_set_info_args *args,
|
|
u16 fid, u32 pid_of_opener)
|
|
{
|
|
struct smb_com_transaction2_sfi_req *pSMB = NULL;
|
|
char *data_offset;
|
|
int rc = 0;
|
|
u16 params, param_offset, offset, byte_count, count;
|
|
|
|
cifs_dbg(FYI, "Set Unix Info (via SetFileInfo)\n");
|
|
rc = small_smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB);
|
|
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->hdr.Pid = cpu_to_le16((__u16)pid_of_opener);
|
|
pSMB->hdr.PidHigh = cpu_to_le16((__u16)(pid_of_opener >> 16));
|
|
|
|
params = 6;
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_sfi_req, Fid) - 4;
|
|
offset = param_offset + params;
|
|
|
|
data_offset = (char *)pSMB +
|
|
offsetof(struct smb_hdr, Protocol) + offset;
|
|
|
|
count = sizeof(FILE_UNIX_BASIC_INFO);
|
|
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_FILE_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->Fid = fid;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
cifs_fill_unix_set_info((FILE_UNIX_BASIC_INFO *)data_offset, args);
|
|
|
|
rc = SendReceiveNoRsp(xid, tcon->ses, (char *) pSMB, 0);
|
|
cifs_small_buf_release(pSMB);
|
|
if (rc)
|
|
cifs_dbg(FYI, "Send error in Set Time (SetFileInfo) = %d\n",
|
|
rc);
|
|
|
|
/* Note: On -EAGAIN error only caller can retry on handle based calls
|
|
since file handle passed in no longer valid */
|
|
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBUnixSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *file_name,
|
|
const struct cifs_unix_set_info_args *args,
|
|
const struct nls_table *nls_codepage, int remap)
|
|
{
|
|
TRANSACTION2_SPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_SPI_RSP *pSMBr = NULL;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
FILE_UNIX_BASIC_INFO *data_offset;
|
|
__u16 params, param_offset, offset, count, byte_count;
|
|
|
|
cifs_dbg(FYI, "In SetUID/GID/Mode\n");
|
|
setPermsRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, file_name,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(file_name, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, file_name, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
count = sizeof(FILE_UNIX_BASIC_INFO);
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
data_offset =
|
|
(FILE_UNIX_BASIC_INFO *) ((char *) &pSMB->hdr.Protocol +
|
|
offset);
|
|
memset(data_offset, 0, count);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_SET_FILE_UNIX_BASIC);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
|
|
cifs_fill_unix_set_info(data_offset, args);
|
|
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "SetPathInfo (perms) returned %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto setPermsRetry;
|
|
return rc;
|
|
}
|
|
|
|
#ifdef CONFIG_CIFS_XATTR
|
|
/*
|
|
* Do a path-based QUERY_ALL_EAS call and parse the result. This is a common
|
|
* function used by listxattr and getxattr type calls. When ea_name is set,
|
|
* it looks for that attribute name and stuffs that value into the EAData
|
|
* buffer. When ea_name is NULL, it stuffs a list of attribute names into the
|
|
* buffer. In both cases, the return value is either the length of the
|
|
* resulting data or a negative error code. If EAData is a NULL pointer then
|
|
* the data isn't copied to it, but the length is returned.
|
|
*/
|
|
ssize_t
|
|
CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const unsigned char *searchName, const unsigned char *ea_name,
|
|
char *EAData, size_t buf_size,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
/* BB assumes one setup word */
|
|
TRANSACTION2_QPI_REQ *pSMB = NULL;
|
|
TRANSACTION2_QPI_RSP *pSMBr = NULL;
|
|
int remap = cifs_remap(cifs_sb);
|
|
struct nls_table *nls_codepage = cifs_sb->local_nls;
|
|
int rc = 0;
|
|
int bytes_returned;
|
|
int list_len;
|
|
struct fealist *ea_response_data;
|
|
struct fea *temp_fea;
|
|
char *temp_ptr;
|
|
char *end_of_smb;
|
|
__u16 params, byte_count, data_offset;
|
|
unsigned int ea_name_len = ea_name ? strlen(ea_name) : 0;
|
|
|
|
cifs_dbg(FYI, "In Query All EAs path %s\n", searchName);
|
|
QAllEAsRetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
list_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, searchName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
list_len++; /* trailing null */
|
|
list_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
list_len = strnlen(searchName, PATH_MAX);
|
|
list_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, searchName, list_len);
|
|
}
|
|
|
|
params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find exact max SMB PDU from sess structure BB */
|
|
pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->ParameterOffset = cpu_to_le16(offsetof(
|
|
struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
|
|
byte_count = params + 1 /* pad */ ;
|
|
pSMB->TotalParameterCount = cpu_to_le16(params);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Send error in QueryAllEAs = %d\n", rc);
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
|
|
/* BB also check enough total bytes returned */
|
|
/* BB we need to improve the validity checking
|
|
of these trans2 responses */
|
|
|
|
rc = validate_t2((struct smb_t2_rsp *)pSMBr);
|
|
if (rc || get_bcc(&pSMBr->hdr) < 4) {
|
|
rc = -EIO; /* bad smb */
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
/* check that length of list is not more than bcc */
|
|
/* check that each entry does not go beyond length
|
|
of list */
|
|
/* check that each element of each entry does not
|
|
go beyond end of list */
|
|
/* validate_trans2_offsets() */
|
|
/* BB check if start of smb + data_offset > &bcc+ bcc */
|
|
|
|
data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
|
|
ea_response_data = (struct fealist *)
|
|
(((char *) &pSMBr->hdr.Protocol) + data_offset);
|
|
|
|
list_len = le32_to_cpu(ea_response_data->list_len);
|
|
cifs_dbg(FYI, "ea length %d\n", list_len);
|
|
if (list_len <= 8) {
|
|
cifs_dbg(FYI, "empty EA list returned from server\n");
|
|
/* didn't find the named attribute */
|
|
if (ea_name)
|
|
rc = -ENODATA;
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
/* make sure list_len doesn't go past end of SMB */
|
|
end_of_smb = (char *)pByteArea(&pSMBr->hdr) + get_bcc(&pSMBr->hdr);
|
|
if ((char *)ea_response_data + list_len > end_of_smb) {
|
|
cifs_dbg(FYI, "EA list appears to go beyond SMB\n");
|
|
rc = -EIO;
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
/* account for ea list len */
|
|
list_len -= 4;
|
|
temp_fea = ea_response_data->list;
|
|
temp_ptr = (char *)temp_fea;
|
|
while (list_len > 0) {
|
|
unsigned int name_len;
|
|
__u16 value_len;
|
|
|
|
list_len -= 4;
|
|
temp_ptr += 4;
|
|
/* make sure we can read name_len and value_len */
|
|
if (list_len < 0) {
|
|
cifs_dbg(FYI, "EA entry goes beyond length of list\n");
|
|
rc = -EIO;
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
name_len = temp_fea->name_len;
|
|
value_len = le16_to_cpu(temp_fea->value_len);
|
|
list_len -= name_len + 1 + value_len;
|
|
if (list_len < 0) {
|
|
cifs_dbg(FYI, "EA entry goes beyond length of list\n");
|
|
rc = -EIO;
|
|
goto QAllEAsOut;
|
|
}
|
|
|
|
if (ea_name) {
|
|
if (ea_name_len == name_len &&
|
|
memcmp(ea_name, temp_ptr, name_len) == 0) {
|
|
temp_ptr += name_len + 1;
|
|
rc = value_len;
|
|
if (buf_size == 0)
|
|
goto QAllEAsOut;
|
|
if ((size_t)value_len > buf_size) {
|
|
rc = -ERANGE;
|
|
goto QAllEAsOut;
|
|
}
|
|
memcpy(EAData, temp_ptr, value_len);
|
|
goto QAllEAsOut;
|
|
}
|
|
} else {
|
|
/* account for prefix user. and trailing null */
|
|
rc += (5 + 1 + name_len);
|
|
if (rc < (int) buf_size) {
|
|
memcpy(EAData, "user.", 5);
|
|
EAData += 5;
|
|
memcpy(EAData, temp_ptr, name_len);
|
|
EAData += name_len;
|
|
/* null terminate name */
|
|
*EAData = 0;
|
|
++EAData;
|
|
} else if (buf_size == 0) {
|
|
/* skip copy - calc size only */
|
|
} else {
|
|
/* stop before overrun buffer */
|
|
rc = -ERANGE;
|
|
break;
|
|
}
|
|
}
|
|
temp_ptr += name_len + 1 + value_len;
|
|
temp_fea = (struct fea *)temp_ptr;
|
|
}
|
|
|
|
/* didn't find the named attribute */
|
|
if (ea_name)
|
|
rc = -ENODATA;
|
|
|
|
QAllEAsOut:
|
|
cifs_buf_release(pSMB);
|
|
if (rc == -EAGAIN)
|
|
goto QAllEAsRetry;
|
|
|
|
return (ssize_t)rc;
|
|
}
|
|
|
|
int
|
|
CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *fileName, const char *ea_name, const void *ea_value,
|
|
const __u16 ea_value_len, const struct nls_table *nls_codepage,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
struct smb_com_transaction2_spi_req *pSMB = NULL;
|
|
struct smb_com_transaction2_spi_rsp *pSMBr = NULL;
|
|
struct fealist *parm_data;
|
|
int name_len;
|
|
int rc = 0;
|
|
int bytes_returned = 0;
|
|
__u16 params, param_offset, byte_count, offset, count;
|
|
int remap = cifs_remap(cifs_sb);
|
|
|
|
cifs_dbg(FYI, "In SetEA\n");
|
|
SetEARetry:
|
|
rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
|
|
name_len =
|
|
cifsConvertToUTF16((__le16 *) pSMB->FileName, fileName,
|
|
PATH_MAX, nls_codepage, remap);
|
|
name_len++; /* trailing null */
|
|
name_len *= 2;
|
|
} else { /* BB improve the check for buffer overruns BB */
|
|
name_len = strnlen(fileName, PATH_MAX);
|
|
name_len++; /* trailing null */
|
|
strncpy(pSMB->FileName, fileName, name_len);
|
|
}
|
|
|
|
params = 6 + name_len;
|
|
|
|
/* done calculating parms using name_len of file name,
|
|
now use name_len to calculate length of ea name
|
|
we are going to create in the inode xattrs */
|
|
if (ea_name == NULL)
|
|
name_len = 0;
|
|
else
|
|
name_len = strnlen(ea_name, 255);
|
|
|
|
count = sizeof(*parm_data) + ea_value_len + name_len;
|
|
pSMB->MaxParameterCount = cpu_to_le16(2);
|
|
/* BB find max SMB PDU from sess */
|
|
pSMB->MaxDataCount = cpu_to_le16(1000);
|
|
pSMB->MaxSetupCount = 0;
|
|
pSMB->Reserved = 0;
|
|
pSMB->Flags = 0;
|
|
pSMB->Timeout = 0;
|
|
pSMB->Reserved2 = 0;
|
|
param_offset = offsetof(struct smb_com_transaction2_spi_req,
|
|
InformationLevel) - 4;
|
|
offset = param_offset + params;
|
|
pSMB->InformationLevel =
|
|
cpu_to_le16(SMB_SET_FILE_EA);
|
|
|
|
parm_data = (void *)pSMB + offsetof(struct smb_hdr, Protocol) + offset;
|
|
pSMB->ParameterOffset = cpu_to_le16(param_offset);
|
|
pSMB->DataOffset = cpu_to_le16(offset);
|
|
pSMB->SetupCount = 1;
|
|
pSMB->Reserved3 = 0;
|
|
pSMB->SubCommand = cpu_to_le16(TRANS2_SET_PATH_INFORMATION);
|
|
byte_count = 3 /* pad */ + params + count;
|
|
pSMB->DataCount = cpu_to_le16(count);
|
|
parm_data->list_len = cpu_to_le32(count);
|
|
parm_data->list[0].EA_flags = 0;
|
|
/* we checked above that name len is less than 255 */
|
|
parm_data->list[0].name_len = (__u8)name_len;
|
|
/* EA names are always ASCII */
|
|
if (ea_name)
|
|
strncpy(parm_data->list[0].name, ea_name, name_len);
|
|
parm_data->list[0].name[name_len] = 0;
|
|
parm_data->list[0].value_len = cpu_to_le16(ea_value_len);
|
|
/* caller ensures that ea_value_len is less than 64K but
|
|
we need to ensure that it fits within the smb */
|
|
|
|
/*BB add length check to see if it would fit in
|
|
negotiated SMB buffer size BB */
|
|
/* if (ea_value_len > buffer_size - 512 (enough for header)) */
|
|
if (ea_value_len)
|
|
memcpy(parm_data->list[0].name+name_len+1,
|
|
ea_value, ea_value_len);
|
|
|
|
pSMB->TotalDataCount = pSMB->DataCount;
|
|
pSMB->ParameterCount = cpu_to_le16(params);
|
|
pSMB->TotalParameterCount = pSMB->ParameterCount;
|
|
pSMB->Reserved4 = 0;
|
|
inc_rfc1001_len(pSMB, byte_count);
|
|
pSMB->ByteCount = cpu_to_le16(byte_count);
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
|
|
if (rc)
|
|
cifs_dbg(FYI, "SetPathInfo (EA) returned %d\n", rc);
|
|
|
|
cifs_buf_release(pSMB);
|
|
|
|
if (rc == -EAGAIN)
|
|
goto SetEARetry;
|
|
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */
|
|
/*
|
|
* Years ago the kernel added a "dnotify" function for Samba server,
|
|
* to allow network clients (such as Windows) to display updated
|
|
* lists of files in directory listings automatically when
|
|
* files are added by one user when another user has the
|
|
* same directory open on their desktop. The Linux cifs kernel
|
|
* client hooked into the kernel side of this interface for
|
|
* the same reason, but ironically when the VFS moved from
|
|
* "dnotify" to "inotify" it became harder to plug in Linux
|
|
* network file system clients (the most obvious use case
|
|
* for notify interfaces is when multiple users can update
|
|
* the contents of the same directory - exactly what network
|
|
* file systems can do) although the server (Samba) could
|
|
* still use it. For the short term we leave the worker
|
|
* function ifdeffed out (below) until inotify is fixed
|
|
* in the VFS to make it easier to plug in network file
|
|
* system clients. If inotify turns out to be permanently
|
|
* incompatible for network fs clients, we could instead simply
|
|
* expose this config flag by adding a future cifs (and smb2) notify ioctl.
|
|
*/
|
|
int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const int notify_subdirs, const __u16 netfid,
|
|
__u32 filter, struct file *pfile, int multishot,
|
|
const struct nls_table *nls_codepage)
|
|
{
|
|
int rc = 0;
|
|
struct smb_com_transaction_change_notify_req *pSMB = NULL;
|
|
struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
|
|
struct dir_notify_req *dnotify_req;
|
|
int bytes_returned;
|
|
|
|
cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid);
|
|
rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
|
|
(void **) &pSMBr);
|
|
if (rc)
|
|
return rc;
|
|
|
|
pSMB->TotalParameterCount = 0 ;
|
|
pSMB->TotalDataCount = 0;
|
|
pSMB->MaxParameterCount = cpu_to_le32(2);
|
|
pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
|
|
pSMB->MaxSetupCount = 4;
|
|
pSMB->Reserved = 0;
|
|
pSMB->ParameterOffset = 0;
|
|
pSMB->DataCount = 0;
|
|
pSMB->DataOffset = 0;
|
|
pSMB->SetupCount = 4; /* single byte does not need le conversion */
|
|
pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
|
|
pSMB->ParameterCount = pSMB->TotalParameterCount;
|
|
if (notify_subdirs)
|
|
pSMB->WatchTree = 1; /* one byte - no le conversion needed */
|
|
pSMB->Reserved2 = 0;
|
|
pSMB->CompletionFilter = cpu_to_le32(filter);
|
|
pSMB->Fid = netfid; /* file handle always le */
|
|
pSMB->ByteCount = 0;
|
|
|
|
rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
|
|
(struct smb_hdr *)pSMBr, &bytes_returned,
|
|
CIFS_ASYNC_OP);
|
|
if (rc) {
|
|
cifs_dbg(FYI, "Error in Notify = %d\n", rc);
|
|
} else {
|
|
/* Add file to outstanding requests */
|
|
/* BB change to kmem cache alloc */
|
|
dnotify_req = kmalloc(
|
|
sizeof(struct dir_notify_req),
|
|
GFP_KERNEL);
|
|
if (dnotify_req) {
|
|
dnotify_req->Pid = pSMB->hdr.Pid;
|
|
dnotify_req->PidHigh = pSMB->hdr.PidHigh;
|
|
dnotify_req->Mid = pSMB->hdr.Mid;
|
|
dnotify_req->Tid = pSMB->hdr.Tid;
|
|
dnotify_req->Uid = pSMB->hdr.Uid;
|
|
dnotify_req->netfid = netfid;
|
|
dnotify_req->pfile = pfile;
|
|
dnotify_req->filter = filter;
|
|
dnotify_req->multishot = multishot;
|
|
spin_lock(&GlobalMid_Lock);
|
|
list_add_tail(&dnotify_req->lhead,
|
|
&GlobalDnotifyReqList);
|
|
spin_unlock(&GlobalMid_Lock);
|
|
} else
|
|
rc = -ENOMEM;
|
|
}
|
|
cifs_buf_release(pSMB);
|
|
return rc;
|
|
}
|
|
#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
|