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![Shyam Prasad N](/assets/img/avatar_default.png)
We do not dump the file path for smb3_open_enter ftrace calls, which is a severe handicap while debugging using ftrace evens. This change adds that info. Unfortunately, we're not updating the path in open params in many places; which I had to do as a part of this change. SMB2_open gets path in utf16 format, but it's easier of path is supplied as char pointer in oparms. Signed-off-by: Shyam Prasad N <sprasad@microsoft.com> Reviewed-by: Paulo Alcantara (SUSE) <pc@manguebit.com> Cc: stable@vger.kernel.org Signed-off-by: Steve French <stfrench@microsoft.com>
844 lines
23 KiB
C
844 lines
23 KiB
C
// SPDX-License-Identifier: LGPL-2.1
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/*
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*
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* Copyright (C) International Business Machines Corp., 2002, 2011
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* Etersoft, 2012
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* Author(s): Pavel Shilovsky (pshilovsky@samba.org),
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* Steve French (sfrench@us.ibm.com)
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*
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*/
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#include <linux/fs.h>
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#include <linux/stat.h>
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#include <linux/slab.h>
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#include <linux/pagemap.h>
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#include <asm/div64.h>
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#include "cifsfs.h"
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_debug.h"
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#include "cifs_fs_sb.h"
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#include "cifs_unicode.h"
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#include "fscache.h"
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#include "smb2glob.h"
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#include "smb2pdu.h"
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#include "smb2proto.h"
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#include "cached_dir.h"
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#include "smb2status.h"
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static void
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free_set_inf_compound(struct smb_rqst *rqst)
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{
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if (rqst[1].rq_iov)
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SMB2_set_info_free(&rqst[1]);
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if (rqst[2].rq_iov)
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SMB2_close_free(&rqst[2]);
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}
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struct cop_vars {
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struct cifs_open_parms oparms;
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struct kvec rsp_iov[3];
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struct smb_rqst rqst[3];
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struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
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struct kvec qi_iov[1];
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struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
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struct kvec close_iov[1];
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struct smb2_file_rename_info rename_info;
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struct smb2_file_link_info link_info;
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};
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/*
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* note: If cfile is passed, the reference to it is dropped here.
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* So make sure that you do not reuse cfile after return from this func.
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*
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* If passing @err_iov and @err_buftype, ensure to make them both large enough (>= 3) to hold all
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* error responses. Caller is also responsible for freeing them up.
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*/
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static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon,
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struct cifs_sb_info *cifs_sb, const char *full_path,
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__u32 desired_access, __u32 create_disposition, __u32 create_options,
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umode_t mode, void *ptr, int command, struct cifsFileInfo *cfile,
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__u8 **extbuf, size_t *extbuflen,
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struct kvec *err_iov, int *err_buftype)
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{
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struct cop_vars *vars = NULL;
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struct kvec *rsp_iov;
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struct smb_rqst *rqst;
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int rc;
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__le16 *utf16_path = NULL;
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__u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
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struct cifs_fid fid;
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struct cifs_ses *ses = tcon->ses;
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struct TCP_Server_Info *server;
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int num_rqst = 0;
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int resp_buftype[3];
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struct smb2_query_info_rsp *qi_rsp = NULL;
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struct cifs_open_info_data *idata;
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int flags = 0;
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__u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0};
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unsigned int size[2];
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void *data[2];
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int len;
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vars = kzalloc(sizeof(*vars), GFP_ATOMIC);
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if (vars == NULL)
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return -ENOMEM;
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rqst = &vars->rqst[0];
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rsp_iov = &vars->rsp_iov[0];
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server = cifs_pick_channel(ses);
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if (smb3_encryption_required(tcon))
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flags |= CIFS_TRANSFORM_REQ;
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resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
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/* We already have a handle so we can skip the open */
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if (cfile)
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goto after_open;
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/* Open */
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utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb);
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if (!utf16_path) {
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rc = -ENOMEM;
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goto finished;
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}
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vars->oparms = (struct cifs_open_parms) {
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.tcon = tcon,
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.path = full_path,
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.desired_access = desired_access,
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.disposition = create_disposition,
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.create_options = cifs_create_options(cifs_sb, create_options),
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.fid = &fid,
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.mode = mode,
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.cifs_sb = cifs_sb,
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};
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rqst[num_rqst].rq_iov = &vars->open_iov[0];
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rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE;
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rc = SMB2_open_init(tcon, server,
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&rqst[num_rqst], &oplock, &vars->oparms,
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utf16_path);
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kfree(utf16_path);
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if (rc)
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goto finished;
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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after_open:
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num_rqst++;
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rc = 0;
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/* Operation */
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switch (command) {
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case SMB2_OP_QUERY_INFO:
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rqst[num_rqst].rq_iov = &vars->qi_iov[0];
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rqst[num_rqst].rq_nvec = 1;
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if (cfile)
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rc = SMB2_query_info_init(tcon, server,
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&rqst[num_rqst],
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cfile->fid.persistent_fid,
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cfile->fid.volatile_fid,
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FILE_ALL_INFORMATION,
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SMB2_O_INFO_FILE, 0,
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sizeof(struct smb2_file_all_info) +
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PATH_MAX * 2, 0, NULL);
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else {
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rc = SMB2_query_info_init(tcon, server,
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&rqst[num_rqst],
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COMPOUND_FID,
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COMPOUND_FID,
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FILE_ALL_INFORMATION,
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SMB2_O_INFO_FILE, 0,
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sizeof(struct smb2_file_all_info) +
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PATH_MAX * 2, 0, NULL);
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if (!rc) {
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst]);
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}
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}
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if (rc)
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goto finished;
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num_rqst++;
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trace_smb3_query_info_compound_enter(xid, ses->Suid, tcon->tid,
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full_path);
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break;
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case SMB2_OP_POSIX_QUERY_INFO:
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rqst[num_rqst].rq_iov = &vars->qi_iov[0];
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rqst[num_rqst].rq_nvec = 1;
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if (cfile)
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rc = SMB2_query_info_init(tcon, server,
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&rqst[num_rqst],
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cfile->fid.persistent_fid,
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cfile->fid.volatile_fid,
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SMB_FIND_FILE_POSIX_INFO,
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SMB2_O_INFO_FILE, 0,
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/* TBD: fix following to allow for longer SIDs */
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sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
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(sizeof(struct cifs_sid) * 2), 0, NULL);
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else {
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rc = SMB2_query_info_init(tcon, server,
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&rqst[num_rqst],
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COMPOUND_FID,
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COMPOUND_FID,
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SMB_FIND_FILE_POSIX_INFO,
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SMB2_O_INFO_FILE, 0,
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sizeof(struct smb311_posix_qinfo *) + (PATH_MAX * 2) +
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(sizeof(struct cifs_sid) * 2), 0, NULL);
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if (!rc) {
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst]);
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}
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}
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if (rc)
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goto finished;
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num_rqst++;
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trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_DELETE:
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trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_MKDIR:
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/*
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* Directories are created through parameters in the
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* SMB2_open() call.
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*/
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trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_RMDIR:
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rqst[num_rqst].rq_iov = &vars->si_iov[0];
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rqst[num_rqst].rq_nvec = 1;
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size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */
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data[0] = &delete_pending[0];
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst], COMPOUND_FID,
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COMPOUND_FID, current->tgid,
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FILE_DISPOSITION_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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if (rc)
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goto finished;
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst++]);
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trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_SET_EOF:
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rqst[num_rqst].rq_iov = &vars->si_iov[0];
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rqst[num_rqst].rq_nvec = 1;
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size[0] = 8; /* sizeof __le64 */
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data[0] = ptr;
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if (cfile) {
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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cfile->fid.persistent_fid,
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cfile->fid.volatile_fid,
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current->tgid,
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FILE_END_OF_FILE_INFORMATION,
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SMB2_O_INFO_FILE, 0,
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data, size);
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} else {
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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COMPOUND_FID,
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COMPOUND_FID,
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current->tgid,
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FILE_END_OF_FILE_INFORMATION,
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SMB2_O_INFO_FILE, 0,
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data, size);
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if (!rc) {
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst]);
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}
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}
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if (rc)
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goto finished;
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num_rqst++;
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trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_SET_INFO:
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rqst[num_rqst].rq_iov = &vars->si_iov[0];
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rqst[num_rqst].rq_nvec = 1;
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size[0] = sizeof(FILE_BASIC_INFO);
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data[0] = ptr;
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if (cfile)
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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cfile->fid.persistent_fid,
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cfile->fid.volatile_fid, current->tgid,
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FILE_BASIC_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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else {
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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COMPOUND_FID,
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COMPOUND_FID, current->tgid,
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FILE_BASIC_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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if (!rc) {
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst]);
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}
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}
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if (rc)
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goto finished;
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num_rqst++;
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trace_smb3_set_info_compound_enter(xid, ses->Suid, tcon->tid,
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full_path);
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break;
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case SMB2_OP_RENAME:
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rqst[num_rqst].rq_iov = &vars->si_iov[0];
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rqst[num_rqst].rq_nvec = 2;
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len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
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vars->rename_info.ReplaceIfExists = 1;
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vars->rename_info.RootDirectory = 0;
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vars->rename_info.FileNameLength = cpu_to_le32(len);
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size[0] = sizeof(struct smb2_file_rename_info);
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data[0] = &vars->rename_info;
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size[1] = len + 2 /* null */;
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data[1] = (__le16 *)ptr;
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if (cfile)
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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cfile->fid.persistent_fid,
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cfile->fid.volatile_fid,
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current->tgid, FILE_RENAME_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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else {
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst],
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COMPOUND_FID, COMPOUND_FID,
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current->tgid, FILE_RENAME_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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if (!rc) {
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst]);
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}
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}
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if (rc)
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goto finished;
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num_rqst++;
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trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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case SMB2_OP_HARDLINK:
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rqst[num_rqst].rq_iov = &vars->si_iov[0];
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rqst[num_rqst].rq_nvec = 2;
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len = (2 * UniStrnlen((wchar_t *)ptr, PATH_MAX));
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vars->link_info.ReplaceIfExists = 0;
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vars->link_info.RootDirectory = 0;
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vars->link_info.FileNameLength = cpu_to_le32(len);
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size[0] = sizeof(struct smb2_file_link_info);
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data[0] = &vars->link_info;
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size[1] = len + 2 /* null */;
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data[1] = (__le16 *)ptr;
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rc = SMB2_set_info_init(tcon, server,
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&rqst[num_rqst], COMPOUND_FID,
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COMPOUND_FID, current->tgid,
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FILE_LINK_INFORMATION,
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SMB2_O_INFO_FILE, 0, data, size);
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if (rc)
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goto finished;
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smb2_set_next_command(tcon, &rqst[num_rqst]);
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smb2_set_related(&rqst[num_rqst++]);
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trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path);
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break;
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default:
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cifs_dbg(VFS, "Invalid command\n");
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rc = -EINVAL;
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}
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if (rc)
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goto finished;
|
|
|
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/* We already have a handle so we can skip the close */
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if (cfile)
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goto after_close;
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/* Close */
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flags |= CIFS_CP_CREATE_CLOSE_OP;
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rqst[num_rqst].rq_iov = &vars->close_iov[0];
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rqst[num_rqst].rq_nvec = 1;
|
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rc = SMB2_close_init(tcon, server,
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&rqst[num_rqst], COMPOUND_FID,
|
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COMPOUND_FID, false);
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smb2_set_related(&rqst[num_rqst]);
|
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if (rc)
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goto finished;
|
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after_close:
|
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num_rqst++;
|
|
|
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if (cfile) {
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rc = compound_send_recv(xid, ses, server,
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flags, num_rqst - 2,
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&rqst[1], &resp_buftype[1],
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&rsp_iov[1]);
|
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} else
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rc = compound_send_recv(xid, ses, server,
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flags, num_rqst,
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rqst, resp_buftype,
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rsp_iov);
|
|
|
|
finished:
|
|
if (cfile)
|
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cifsFileInfo_put(cfile);
|
|
|
|
SMB2_open_free(&rqst[0]);
|
|
if (rc == -EREMCHG) {
|
|
pr_warn_once("server share %s deleted\n", tcon->tree_name);
|
|
tcon->need_reconnect = true;
|
|
}
|
|
|
|
switch (command) {
|
|
case SMB2_OP_QUERY_INFO:
|
|
idata = ptr;
|
|
if (rc == 0 && cfile && cfile->symlink_target) {
|
|
idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
|
|
if (!idata->symlink_target)
|
|
rc = -ENOMEM;
|
|
}
|
|
if (rc == 0) {
|
|
qi_rsp = (struct smb2_query_info_rsp *)
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|
rsp_iov[1].iov_base;
|
|
rc = smb2_validate_and_copy_iov(
|
|
le16_to_cpu(qi_rsp->OutputBufferOffset),
|
|
le32_to_cpu(qi_rsp->OutputBufferLength),
|
|
&rsp_iov[1], sizeof(idata->fi), (char *)&idata->fi);
|
|
}
|
|
if (rqst[1].rq_iov)
|
|
SMB2_query_info_free(&rqst[1]);
|
|
if (rqst[2].rq_iov)
|
|
SMB2_close_free(&rqst[2]);
|
|
if (rc)
|
|
trace_smb3_query_info_compound_err(xid, ses->Suid,
|
|
tcon->tid, rc);
|
|
else
|
|
trace_smb3_query_info_compound_done(xid, ses->Suid,
|
|
tcon->tid);
|
|
break;
|
|
case SMB2_OP_POSIX_QUERY_INFO:
|
|
idata = ptr;
|
|
if (rc == 0 && cfile && cfile->symlink_target) {
|
|
idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL);
|
|
if (!idata->symlink_target)
|
|
rc = -ENOMEM;
|
|
}
|
|
if (rc == 0) {
|
|
qi_rsp = (struct smb2_query_info_rsp *)
|
|
rsp_iov[1].iov_base;
|
|
rc = smb2_validate_and_copy_iov(
|
|
le16_to_cpu(qi_rsp->OutputBufferOffset),
|
|
le32_to_cpu(qi_rsp->OutputBufferLength),
|
|
&rsp_iov[1], sizeof(idata->posix_fi) /* add SIDs */,
|
|
(char *)&idata->posix_fi);
|
|
}
|
|
if (rc == 0) {
|
|
unsigned int length = le32_to_cpu(qi_rsp->OutputBufferLength);
|
|
|
|
if (length > sizeof(idata->posix_fi)) {
|
|
char *base = (char *)rsp_iov[1].iov_base +
|
|
le16_to_cpu(qi_rsp->OutputBufferOffset) +
|
|
sizeof(idata->posix_fi);
|
|
*extbuflen = length - sizeof(idata->posix_fi);
|
|
*extbuf = kmemdup(base, *extbuflen, GFP_KERNEL);
|
|
if (!*extbuf)
|
|
rc = -ENOMEM;
|
|
} else {
|
|
rc = -EINVAL;
|
|
}
|
|
}
|
|
if (rqst[1].rq_iov)
|
|
SMB2_query_info_free(&rqst[1]);
|
|
if (rqst[2].rq_iov)
|
|
SMB2_close_free(&rqst[2]);
|
|
if (rc)
|
|
trace_smb3_posix_query_info_compound_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_posix_query_info_compound_done(xid, ses->Suid, tcon->tid);
|
|
break;
|
|
case SMB2_OP_DELETE:
|
|
if (rc)
|
|
trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_delete_done(xid, ses->Suid, tcon->tid);
|
|
if (rqst[1].rq_iov)
|
|
SMB2_close_free(&rqst[1]);
|
|
break;
|
|
case SMB2_OP_MKDIR:
|
|
if (rc)
|
|
trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid);
|
|
if (rqst[1].rq_iov)
|
|
SMB2_close_free(&rqst[1]);
|
|
break;
|
|
case SMB2_OP_HARDLINK:
|
|
if (rc)
|
|
trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid);
|
|
free_set_inf_compound(rqst);
|
|
break;
|
|
case SMB2_OP_RENAME:
|
|
if (rc)
|
|
trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_rename_done(xid, ses->Suid, tcon->tid);
|
|
free_set_inf_compound(rqst);
|
|
break;
|
|
case SMB2_OP_RMDIR:
|
|
if (rc)
|
|
trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid);
|
|
free_set_inf_compound(rqst);
|
|
break;
|
|
case SMB2_OP_SET_EOF:
|
|
if (rc)
|
|
trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc);
|
|
else
|
|
trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid);
|
|
free_set_inf_compound(rqst);
|
|
break;
|
|
case SMB2_OP_SET_INFO:
|
|
if (rc)
|
|
trace_smb3_set_info_compound_err(xid, ses->Suid,
|
|
tcon->tid, rc);
|
|
else
|
|
trace_smb3_set_info_compound_done(xid, ses->Suid,
|
|
tcon->tid);
|
|
free_set_inf_compound(rqst);
|
|
break;
|
|
}
|
|
|
|
if (rc && err_iov && err_buftype) {
|
|
memcpy(err_iov, rsp_iov, 3 * sizeof(*err_iov));
|
|
memcpy(err_buftype, resp_buftype, 3 * sizeof(*err_buftype));
|
|
} else {
|
|
free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
|
|
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
|
|
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
|
|
}
|
|
kfree(vars);
|
|
return rc;
|
|
}
|
|
|
|
int smb2_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
struct cifs_open_info_data *data, bool *adjust_tz, bool *reparse)
|
|
{
|
|
__u32 create_options = 0;
|
|
struct cifsFileInfo *cfile;
|
|
struct cached_fid *cfid = NULL;
|
|
struct kvec err_iov[3] = {};
|
|
int err_buftype[3] = {};
|
|
bool islink;
|
|
int rc, rc2;
|
|
|
|
*adjust_tz = false;
|
|
*reparse = false;
|
|
|
|
if (strcmp(full_path, ""))
|
|
rc = -ENOENT;
|
|
else
|
|
rc = open_cached_dir(xid, tcon, full_path, cifs_sb, false, &cfid);
|
|
/* If it is a root and its handle is cached then use it */
|
|
if (!rc) {
|
|
if (cfid->file_all_info_is_valid) {
|
|
memcpy(&data->fi, &cfid->file_all_info, sizeof(data->fi));
|
|
} else {
|
|
rc = SMB2_query_info(xid, tcon, cfid->fid.persistent_fid,
|
|
cfid->fid.volatile_fid, &data->fi);
|
|
}
|
|
close_cached_dir(cfid);
|
|
return rc;
|
|
}
|
|
|
|
cifs_get_readable_path(tcon, full_path, &cfile);
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN,
|
|
create_options, ACL_NO_MODE, data, SMB2_OP_QUERY_INFO, cfile,
|
|
NULL, NULL, err_iov, err_buftype);
|
|
if (rc) {
|
|
struct smb2_hdr *hdr = err_iov[0].iov_base;
|
|
|
|
if (unlikely(!hdr || err_buftype[0] == CIFS_NO_BUFFER))
|
|
goto out;
|
|
if (rc == -EOPNOTSUPP && hdr->Command == SMB2_CREATE &&
|
|
hdr->Status == STATUS_STOPPED_ON_SYMLINK) {
|
|
rc = smb2_parse_symlink_response(cifs_sb, err_iov,
|
|
&data->symlink_target);
|
|
if (rc)
|
|
goto out;
|
|
|
|
*reparse = true;
|
|
create_options |= OPEN_REPARSE_POINT;
|
|
|
|
/* Failed on a symbolic link - query a reparse point info */
|
|
cifs_get_readable_path(tcon, full_path, &cfile);
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
|
|
FILE_READ_ATTRIBUTES, FILE_OPEN,
|
|
create_options, ACL_NO_MODE, data,
|
|
SMB2_OP_QUERY_INFO, cfile, NULL, NULL,
|
|
NULL, NULL);
|
|
goto out;
|
|
} else if (rc != -EREMOTE && hdr->Status == STATUS_OBJECT_NAME_INVALID) {
|
|
rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb,
|
|
full_path, &islink);
|
|
if (rc2) {
|
|
rc = rc2;
|
|
goto out;
|
|
}
|
|
if (islink)
|
|
rc = -EREMOTE;
|
|
}
|
|
if (rc == -EREMOTE && IS_ENABLED(CONFIG_CIFS_DFS_UPCALL) && cifs_sb &&
|
|
(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NO_DFS))
|
|
rc = -EOPNOTSUPP;
|
|
}
|
|
|
|
out:
|
|
free_rsp_buf(err_buftype[0], err_iov[0].iov_base);
|
|
free_rsp_buf(err_buftype[1], err_iov[1].iov_base);
|
|
free_rsp_buf(err_buftype[2], err_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
|
|
int smb311_posix_query_path_info(const unsigned int xid, struct cifs_tcon *tcon,
|
|
struct cifs_sb_info *cifs_sb, const char *full_path,
|
|
struct cifs_open_info_data *data,
|
|
struct cifs_sid *owner,
|
|
struct cifs_sid *group,
|
|
bool *adjust_tz, bool *reparse)
|
|
{
|
|
int rc;
|
|
__u32 create_options = 0;
|
|
struct cifsFileInfo *cfile;
|
|
struct kvec err_iov[3] = {};
|
|
int err_buftype[3] = {};
|
|
__u8 *sidsbuf = NULL;
|
|
__u8 *sidsbuf_end = NULL;
|
|
size_t sidsbuflen = 0;
|
|
size_t owner_len, group_len;
|
|
|
|
*adjust_tz = false;
|
|
*reparse = false;
|
|
|
|
/*
|
|
* BB TODO: Add support for using the cached root handle.
|
|
* Create SMB2_query_posix_info worker function to do non-compounded query
|
|
* when we already have an open file handle for this. For now this is fast enough
|
|
* (always using the compounded version).
|
|
*/
|
|
|
|
cifs_get_readable_path(tcon, full_path, &cfile);
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES, FILE_OPEN,
|
|
create_options, ACL_NO_MODE, data, SMB2_OP_POSIX_QUERY_INFO, cfile,
|
|
&sidsbuf, &sidsbuflen, err_iov, err_buftype);
|
|
if (rc == -EOPNOTSUPP) {
|
|
/* BB TODO: When support for special files added to Samba re-verify this path */
|
|
if (err_iov[0].iov_base && err_buftype[0] != CIFS_NO_BUFFER &&
|
|
((struct smb2_hdr *)err_iov[0].iov_base)->Command == SMB2_CREATE &&
|
|
((struct smb2_hdr *)err_iov[0].iov_base)->Status == STATUS_STOPPED_ON_SYMLINK) {
|
|
rc = smb2_parse_symlink_response(cifs_sb, err_iov, &data->symlink_target);
|
|
if (rc)
|
|
goto out;
|
|
}
|
|
*reparse = true;
|
|
create_options |= OPEN_REPARSE_POINT;
|
|
|
|
/* Failed on a symbolic link - query a reparse point info */
|
|
cifs_get_readable_path(tcon, full_path, &cfile);
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, FILE_READ_ATTRIBUTES,
|
|
FILE_OPEN, create_options, ACL_NO_MODE, data,
|
|
SMB2_OP_POSIX_QUERY_INFO, cfile,
|
|
&sidsbuf, &sidsbuflen, NULL, NULL);
|
|
}
|
|
|
|
if (rc == 0) {
|
|
sidsbuf_end = sidsbuf + sidsbuflen;
|
|
|
|
owner_len = posix_info_sid_size(sidsbuf, sidsbuf_end);
|
|
if (owner_len == -1) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
memcpy(owner, sidsbuf, owner_len);
|
|
|
|
group_len = posix_info_sid_size(
|
|
sidsbuf + owner_len, sidsbuf_end);
|
|
if (group_len == -1) {
|
|
rc = -EINVAL;
|
|
goto out;
|
|
}
|
|
memcpy(group, sidsbuf + owner_len, group_len);
|
|
}
|
|
|
|
out:
|
|
kfree(sidsbuf);
|
|
free_rsp_buf(err_buftype[0], err_iov[0].iov_base);
|
|
free_rsp_buf(err_buftype[1], err_iov[1].iov_base);
|
|
free_rsp_buf(err_buftype[2], err_iov[2].iov_base);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode,
|
|
struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_compound_op(xid, tcon, cifs_sb, name,
|
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE,
|
|
CREATE_NOT_FILE, mode, NULL, SMB2_OP_MKDIR,
|
|
NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
void
|
|
smb2_mkdir_setinfo(struct inode *inode, const char *name,
|
|
struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon,
|
|
const unsigned int xid)
|
|
{
|
|
FILE_BASIC_INFO data;
|
|
struct cifsInodeInfo *cifs_i;
|
|
struct cifsFileInfo *cfile;
|
|
u32 dosattrs;
|
|
int tmprc;
|
|
|
|
memset(&data, 0, sizeof(data));
|
|
cifs_i = CIFS_I(inode);
|
|
dosattrs = cifs_i->cifsAttrs | ATTR_READONLY;
|
|
data.Attributes = cpu_to_le32(dosattrs);
|
|
cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile);
|
|
tmprc = smb2_compound_op(xid, tcon, cifs_sb, name,
|
|
FILE_WRITE_ATTRIBUTES, FILE_CREATE,
|
|
CREATE_NOT_FILE, ACL_NO_MODE,
|
|
&data, SMB2_OP_SET_INFO, cfile, NULL, NULL, NULL, NULL);
|
|
if (tmprc == 0)
|
|
cifs_i->cifsAttrs = dosattrs;
|
|
}
|
|
|
|
int
|
|
smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
drop_cached_dir_by_name(xid, tcon, name, cifs_sb);
|
|
return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
|
|
CREATE_NOT_FILE, ACL_NO_MODE,
|
|
NULL, SMB2_OP_RMDIR, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
int
|
|
smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_compound_op(xid, tcon, cifs_sb, name, DELETE, FILE_OPEN,
|
|
CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT,
|
|
ACL_NO_MODE, NULL, SMB2_OP_DELETE, NULL, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
static int
|
|
smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb, __u32 access, int command,
|
|
struct cifsFileInfo *cfile)
|
|
{
|
|
__le16 *smb2_to_name = NULL;
|
|
int rc;
|
|
|
|
smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb);
|
|
if (smb2_to_name == NULL) {
|
|
rc = -ENOMEM;
|
|
goto smb2_rename_path;
|
|
}
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, access,
|
|
FILE_OPEN, 0, ACL_NO_MODE, smb2_to_name,
|
|
command, cfile, NULL, NULL, NULL, NULL);
|
|
smb2_rename_path:
|
|
kfree(smb2_to_name);
|
|
return rc;
|
|
}
|
|
|
|
int
|
|
smb2_rename_path(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
struct cifsFileInfo *cfile;
|
|
|
|
drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb);
|
|
cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile);
|
|
|
|
return smb2_set_path_attr(xid, tcon, from_name, to_name,
|
|
cifs_sb, DELETE, SMB2_OP_RENAME, cfile);
|
|
}
|
|
|
|
int
|
|
smb2_create_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *from_name, const char *to_name,
|
|
struct cifs_sb_info *cifs_sb)
|
|
{
|
|
return smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb,
|
|
FILE_READ_ATTRIBUTES, SMB2_OP_HARDLINK,
|
|
NULL);
|
|
}
|
|
|
|
int
|
|
smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon,
|
|
const char *full_path, __u64 size,
|
|
struct cifs_sb_info *cifs_sb, bool set_alloc)
|
|
{
|
|
__le64 eof = cpu_to_le64(size);
|
|
struct cifsFileInfo *cfile;
|
|
|
|
cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
|
|
return smb2_compound_op(xid, tcon, cifs_sb, full_path,
|
|
FILE_WRITE_DATA, FILE_OPEN, 0, ACL_NO_MODE,
|
|
&eof, SMB2_OP_SET_EOF, cfile, NULL, NULL, NULL, NULL);
|
|
}
|
|
|
|
int
|
|
smb2_set_file_info(struct inode *inode, const char *full_path,
|
|
FILE_BASIC_INFO *buf, const unsigned int xid)
|
|
{
|
|
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
|
|
struct tcon_link *tlink;
|
|
struct cifs_tcon *tcon;
|
|
struct cifsFileInfo *cfile;
|
|
int rc;
|
|
|
|
if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) &&
|
|
(buf->LastWriteTime == 0) && (buf->ChangeTime == 0) &&
|
|
(buf->Attributes == 0))
|
|
return 0; /* would be a no op, no sense sending this */
|
|
|
|
tlink = cifs_sb_tlink(cifs_sb);
|
|
if (IS_ERR(tlink))
|
|
return PTR_ERR(tlink);
|
|
tcon = tlink_tcon(tlink);
|
|
|
|
cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile);
|
|
rc = smb2_compound_op(xid, tcon, cifs_sb, full_path,
|
|
FILE_WRITE_ATTRIBUTES, FILE_OPEN,
|
|
0, ACL_NO_MODE, buf, SMB2_OP_SET_INFO, cfile,
|
|
NULL, NULL, NULL, NULL);
|
|
cifs_put_tlink(tlink);
|
|
return rc;
|
|
}
|