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![David Howells](/assets/img/avatar_default.png)
Wrap access to task credentials so that they can be separated more easily from the task_struct during the introduction of COW creds. Change most current->(|e|s|fs)[ug]id to current_(|e|s|fs)[ug]id(). Change some task->e?[ug]id to task_e?[ug]id(). In some places it makes more sense to use RCU directly rather than a convenient wrapper; these will be addressed by later patches. Signed-off-by: David Howells <dhowells@redhat.com> Reviewed-by: James Morris <jmorris@namei.org> Acked-by: Serge Hallyn <serue@us.ibm.com> Cc: Steven French <sfrench@us.ibm.com> Signed-off-by: James Morris <jmorris@namei.org>
3507 lines
84 KiB
C
3507 lines
84 KiB
C
/*
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* proc.c
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*
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* Copyright (C) 1995, 1996 by Paal-Kr. Engstad and Volker Lendecke
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* Copyright (C) 1997 by Volker Lendecke
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*
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* Please add a note about your changes to smbfs in the ChangeLog file.
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*/
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#include <linux/types.h>
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#include <linux/capability.h>
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#include <linux/errno.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/file.h>
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#include <linux/stat.h>
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#include <linux/fcntl.h>
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#include <linux/dcache.h>
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#include <linux/nls.h>
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#include <linux/smp_lock.h>
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#include <linux/net.h>
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#include <linux/vfs.h>
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#include <linux/smb_fs.h>
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#include <linux/smbno.h>
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#include <linux/smb_mount.h>
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#include <net/sock.h>
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#include <asm/string.h>
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#include <asm/div64.h>
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#include "smb_debug.h"
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#include "proto.h"
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#include "request.h"
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/* Features. Undefine if they cause problems, this should perhaps be a
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config option. */
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#define SMBFS_POSIX_UNLINK 1
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/* Allow smb_retry to be interrupted. */
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#define SMB_RETRY_INTR
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#define SMB_VWV(packet) ((packet) + SMB_HEADER_LEN)
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#define SMB_CMD(packet) (*(packet+8))
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#define SMB_WCT(packet) (*(packet+SMB_HEADER_LEN - 1))
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#define SMB_DIRINFO_SIZE 43
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#define SMB_STATUS_SIZE 21
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#define SMB_ST_BLKSIZE (PAGE_SIZE)
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#define SMB_ST_BLKSHIFT (PAGE_SHIFT)
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static struct smb_ops smb_ops_core;
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static struct smb_ops smb_ops_os2;
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static struct smb_ops smb_ops_win95;
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static struct smb_ops smb_ops_winNT;
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static struct smb_ops smb_ops_unix;
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static struct smb_ops smb_ops_null;
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static void
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smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
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static void
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smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr);
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static int
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smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
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struct smb_fattr *fattr);
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static int
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smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
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struct smb_fattr *fattr);
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static int
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smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
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u16 attr);
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static int
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smb_proc_setattr_ext(struct smb_sb_info *server,
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struct inode *inode, struct smb_fattr *fattr);
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static int
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smb_proc_query_cifsunix(struct smb_sb_info *server);
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static void
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install_ops(struct smb_ops *dst, struct smb_ops *src);
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static void
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str_upper(char *name, int len)
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{
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while (len--)
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{
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if (*name >= 'a' && *name <= 'z')
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*name -= ('a' - 'A');
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name++;
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}
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}
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#if 0
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static void
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str_lower(char *name, int len)
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{
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while (len--)
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{
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if (*name >= 'A' && *name <= 'Z')
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*name += ('a' - 'A');
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name++;
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}
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}
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#endif
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/* reverse a string inline. This is used by the dircache walking routines */
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static void reverse_string(char *buf, int len)
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{
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char c;
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char *end = buf+len-1;
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while(buf < end) {
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c = *buf;
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*(buf++) = *end;
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*(end--) = c;
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}
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}
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/* no conversion, just a wrapper for memcpy. */
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static int convert_memcpy(unsigned char *output, int olen,
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const unsigned char *input, int ilen,
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struct nls_table *nls_from,
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struct nls_table *nls_to)
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{
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if (olen < ilen)
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return -ENAMETOOLONG;
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memcpy(output, input, ilen);
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return ilen;
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}
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static inline int write_char(unsigned char ch, char *output, int olen)
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{
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if (olen < 4)
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return -ENAMETOOLONG;
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sprintf(output, ":x%02x", ch);
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return 4;
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}
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static inline int write_unichar(wchar_t ch, char *output, int olen)
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{
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if (olen < 5)
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return -ENAMETOOLONG;
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sprintf(output, ":%04x", ch);
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return 5;
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}
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/* convert from one "codepage" to another (possibly being utf8). */
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static int convert_cp(unsigned char *output, int olen,
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const unsigned char *input, int ilen,
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struct nls_table *nls_from,
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struct nls_table *nls_to)
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{
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int len = 0;
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int n;
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wchar_t ch;
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while (ilen > 0) {
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/* convert by changing to unicode and back to the new cp */
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n = nls_from->char2uni(input, ilen, &ch);
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if (n == -EINVAL) {
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ilen--;
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n = write_char(*input++, output, olen);
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if (n < 0)
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goto fail;
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output += n;
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olen -= n;
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len += n;
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continue;
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} else if (n < 0)
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goto fail;
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input += n;
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ilen -= n;
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n = nls_to->uni2char(ch, output, olen);
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if (n == -EINVAL)
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n = write_unichar(ch, output, olen);
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if (n < 0)
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goto fail;
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output += n;
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olen -= n;
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len += n;
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}
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return len;
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fail:
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return n;
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}
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/* ----------------------------------------------------------- */
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/*
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* nls_unicode
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*
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* This encodes/decodes little endian unicode format
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*/
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static int uni2char(wchar_t uni, unsigned char *out, int boundlen)
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{
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if (boundlen < 2)
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return -EINVAL;
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*out++ = uni & 0xff;
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*out++ = uni >> 8;
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return 2;
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}
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static int char2uni(const unsigned char *rawstring, int boundlen, wchar_t *uni)
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{
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if (boundlen < 2)
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return -EINVAL;
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*uni = (rawstring[1] << 8) | rawstring[0];
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return 2;
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}
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static struct nls_table unicode_table = {
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.charset = "unicode",
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.uni2char = uni2char,
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.char2uni = char2uni,
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};
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/* ----------------------------------------------------------- */
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static int setcodepage(struct nls_table **p, char *name)
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{
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struct nls_table *nls;
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if (!name || !*name) {
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nls = NULL;
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} else if ( (nls = load_nls(name)) == NULL) {
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printk (KERN_ERR "smbfs: failed to load nls '%s'\n", name);
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return -EINVAL;
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}
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/* if already set, unload the previous one. */
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if (*p && *p != &unicode_table)
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unload_nls(*p);
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*p = nls;
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return 0;
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}
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/* Handles all changes to codepage settings. */
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int smb_setcodepage(struct smb_sb_info *server, struct smb_nls_codepage *cp)
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{
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int n = 0;
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smb_lock_server(server);
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/* Don't load any nls_* at all, if no remote is requested */
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if (!*cp->remote_name)
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goto out;
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/* local */
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n = setcodepage(&server->local_nls, cp->local_name);
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if (n != 0)
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goto out;
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/* remote */
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if (!strcmp(cp->remote_name, "unicode")) {
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server->remote_nls = &unicode_table;
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} else {
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n = setcodepage(&server->remote_nls, cp->remote_name);
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if (n != 0)
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setcodepage(&server->local_nls, NULL);
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}
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out:
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if (server->local_nls != NULL && server->remote_nls != NULL)
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server->ops->convert = convert_cp;
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else
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server->ops->convert = convert_memcpy;
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smb_unlock_server(server);
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return n;
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}
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/*****************************************************************************/
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/* */
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/* Encoding/Decoding section */
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/* */
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/*****************************************************************************/
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static __u8 *
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smb_encode_smb_length(__u8 * p, __u32 len)
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{
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*p = 0;
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*(p+1) = 0;
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*(p+2) = (len & 0xFF00) >> 8;
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*(p+3) = (len & 0xFF);
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if (len > 0xFFFF)
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{
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*(p+1) = 1;
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}
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return p + 4;
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}
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/*
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* smb_build_path: build the path to entry and name storing it in buf.
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* The path returned will have the trailing '\0'.
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*/
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static int smb_build_path(struct smb_sb_info *server, unsigned char *buf,
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int maxlen,
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struct dentry *entry, struct qstr *name)
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{
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unsigned char *path = buf;
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int len;
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int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE) != 0;
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if (maxlen < (2<<unicode))
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return -ENAMETOOLONG;
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if (maxlen > SMB_MAXPATHLEN + 1)
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maxlen = SMB_MAXPATHLEN + 1;
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if (entry == NULL)
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goto test_name_and_out;
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/*
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* If IS_ROOT, we have to do no walking at all.
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*/
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if (IS_ROOT(entry) && !name) {
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*path++ = '\\';
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if (unicode) *path++ = '\0';
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*path++ = '\0';
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if (unicode) *path++ = '\0';
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return path-buf;
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}
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/*
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* Build the path string walking the tree backward from end to ROOT
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* and store it in reversed order [see reverse_string()]
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*/
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dget(entry);
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spin_lock(&entry->d_lock);
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while (!IS_ROOT(entry)) {
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struct dentry *parent;
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if (maxlen < (3<<unicode)) {
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spin_unlock(&entry->d_lock);
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dput(entry);
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return -ENAMETOOLONG;
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}
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len = server->ops->convert(path, maxlen-2,
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entry->d_name.name, entry->d_name.len,
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server->local_nls, server->remote_nls);
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if (len < 0) {
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spin_unlock(&entry->d_lock);
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dput(entry);
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return len;
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}
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reverse_string(path, len);
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path += len;
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if (unicode) {
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/* Note: reverse order */
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*path++ = '\0';
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maxlen--;
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}
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*path++ = '\\';
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maxlen -= len+1;
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parent = entry->d_parent;
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dget(parent);
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spin_unlock(&entry->d_lock);
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dput(entry);
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entry = parent;
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spin_lock(&entry->d_lock);
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}
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spin_unlock(&entry->d_lock);
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dput(entry);
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reverse_string(buf, path-buf);
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/* maxlen has space for at least one char */
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test_name_and_out:
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if (name) {
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if (maxlen < (3<<unicode))
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return -ENAMETOOLONG;
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*path++ = '\\';
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if (unicode) {
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*path++ = '\0';
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maxlen--;
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}
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len = server->ops->convert(path, maxlen-2,
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name->name, name->len,
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server->local_nls, server->remote_nls);
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if (len < 0)
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return len;
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path += len;
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maxlen -= len+1;
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}
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/* maxlen has space for at least one char */
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*path++ = '\0';
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if (unicode) *path++ = '\0';
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return path-buf;
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}
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static int smb_encode_path(struct smb_sb_info *server, char *buf, int maxlen,
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struct dentry *dir, struct qstr *name)
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{
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int result;
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result = smb_build_path(server, buf, maxlen, dir, name);
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if (result < 0)
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goto out;
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if (server->opt.protocol <= SMB_PROTOCOL_COREPLUS)
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str_upper(buf, result);
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out:
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return result;
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}
|
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|
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/* encode_path for non-trans2 request SMBs */
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static int smb_simple_encode_path(struct smb_request *req, char **p,
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struct dentry * entry, struct qstr * name)
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{
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struct smb_sb_info *server = req->rq_server;
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char *s = *p;
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int res;
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int maxlen = ((char *)req->rq_buffer + req->rq_bufsize) - s;
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int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
|
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|
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if (!maxlen)
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return -ENAMETOOLONG;
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*s++ = 4; /* ASCII data format */
|
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|
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/*
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* SMB Unicode strings must be 16bit aligned relative the start of the
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* packet. If they are not they must be padded with 0.
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*/
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if (unicode) {
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int align = s - (char *)req->rq_buffer;
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if (!(align & 1)) {
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*s++ = '\0';
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maxlen--;
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}
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}
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|
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res = smb_encode_path(server, s, maxlen-1, entry, name);
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if (res < 0)
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return res;
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*p = s + res;
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return 0;
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}
|
|
|
|
/* The following are taken directly from msdos-fs */
|
|
|
|
/* Linear day numbers of the respective 1sts in non-leap years. */
|
|
|
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static int day_n[] =
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{0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 0, 0, 0, 0};
|
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/* JanFebMarApr May Jun Jul Aug Sep Oct Nov Dec */
|
|
|
|
|
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static time_t
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utc2local(struct smb_sb_info *server, time_t time)
|
|
{
|
|
return time - server->opt.serverzone*60;
|
|
}
|
|
|
|
static time_t
|
|
local2utc(struct smb_sb_info *server, time_t time)
|
|
{
|
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return time + server->opt.serverzone*60;
|
|
}
|
|
|
|
/* Convert a MS-DOS time/date pair to a UNIX date (seconds since 1 1 70). */
|
|
|
|
static time_t
|
|
date_dos2unix(struct smb_sb_info *server, __u16 date, __u16 time)
|
|
{
|
|
int month, year;
|
|
time_t secs;
|
|
|
|
/* first subtract and mask after that... Otherwise, if
|
|
date == 0, bad things happen */
|
|
month = ((date >> 5) - 1) & 15;
|
|
year = date >> 9;
|
|
secs = (time & 31) * 2 + 60 * ((time >> 5) & 63) + (time >> 11) * 3600 + 86400 *
|
|
((date & 31) - 1 + day_n[month] + (year / 4) + year * 365 - ((year & 3) == 0 &&
|
|
month < 2 ? 1 : 0) + 3653);
|
|
/* days since 1.1.70 plus 80's leap day */
|
|
return local2utc(server, secs);
|
|
}
|
|
|
|
|
|
/* Convert linear UNIX date to a MS-DOS time/date pair. */
|
|
|
|
static void
|
|
date_unix2dos(struct smb_sb_info *server,
|
|
int unix_date, __u16 *date, __u16 *time)
|
|
{
|
|
int day, year, nl_day, month;
|
|
|
|
unix_date = utc2local(server, unix_date);
|
|
if (unix_date < 315532800)
|
|
unix_date = 315532800;
|
|
|
|
*time = (unix_date % 60) / 2 +
|
|
(((unix_date / 60) % 60) << 5) +
|
|
(((unix_date / 3600) % 24) << 11);
|
|
|
|
day = unix_date / 86400 - 3652;
|
|
year = day / 365;
|
|
if ((year + 3) / 4 + 365 * year > day)
|
|
year--;
|
|
day -= (year + 3) / 4 + 365 * year;
|
|
if (day == 59 && !(year & 3)) {
|
|
nl_day = day;
|
|
month = 2;
|
|
} else {
|
|
nl_day = (year & 3) || day <= 59 ? day : day - 1;
|
|
for (month = 0; month < 12; month++)
|
|
if (day_n[month] > nl_day)
|
|
break;
|
|
}
|
|
*date = nl_day - day_n[month - 1] + 1 + (month << 5) + (year << 9);
|
|
}
|
|
|
|
/* The following are taken from fs/ntfs/util.c */
|
|
|
|
#define NTFS_TIME_OFFSET ((u64)(369*365 + 89) * 24 * 3600 * 10000000)
|
|
|
|
/*
|
|
* Convert the NT UTC (based 1601-01-01, in hundred nanosecond units)
|
|
* into Unix UTC (based 1970-01-01, in seconds).
|
|
*/
|
|
static struct timespec
|
|
smb_ntutc2unixutc(u64 ntutc)
|
|
{
|
|
struct timespec ts;
|
|
/* FIXME: what about the timezone difference? */
|
|
/* Subtract the NTFS time offset, then convert to 1s intervals. */
|
|
u64 t = ntutc - NTFS_TIME_OFFSET;
|
|
ts.tv_nsec = do_div(t, 10000000) * 100;
|
|
ts.tv_sec = t;
|
|
return ts;
|
|
}
|
|
|
|
/* Convert the Unix UTC into NT time */
|
|
static u64
|
|
smb_unixutc2ntutc(struct timespec ts)
|
|
{
|
|
/* Note: timezone conversion is probably wrong. */
|
|
/* return ((u64)utc2local(server, t)) * 10000000 + NTFS_TIME_OFFSET; */
|
|
return ((u64)ts.tv_sec) * 10000000 + ts.tv_nsec/100 + NTFS_TIME_OFFSET;
|
|
}
|
|
|
|
#define MAX_FILE_MODE 6
|
|
static mode_t file_mode[] = {
|
|
S_IFREG, S_IFDIR, S_IFLNK, S_IFCHR, S_IFBLK, S_IFIFO, S_IFSOCK
|
|
};
|
|
|
|
static int smb_filetype_to_mode(u32 filetype)
|
|
{
|
|
if (filetype > MAX_FILE_MODE) {
|
|
PARANOIA("Filetype out of range: %d\n", filetype);
|
|
return S_IFREG;
|
|
}
|
|
return file_mode[filetype];
|
|
}
|
|
|
|
static u32 smb_filetype_from_mode(int mode)
|
|
{
|
|
if (S_ISREG(mode))
|
|
return UNIX_TYPE_FILE;
|
|
if (S_ISDIR(mode))
|
|
return UNIX_TYPE_DIR;
|
|
if (S_ISLNK(mode))
|
|
return UNIX_TYPE_SYMLINK;
|
|
if (S_ISCHR(mode))
|
|
return UNIX_TYPE_CHARDEV;
|
|
if (S_ISBLK(mode))
|
|
return UNIX_TYPE_BLKDEV;
|
|
if (S_ISFIFO(mode))
|
|
return UNIX_TYPE_FIFO;
|
|
if (S_ISSOCK(mode))
|
|
return UNIX_TYPE_SOCKET;
|
|
return UNIX_TYPE_UNKNOWN;
|
|
}
|
|
|
|
|
|
/*****************************************************************************/
|
|
/* */
|
|
/* Support section. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
__u32
|
|
smb_len(__u8 * p)
|
|
{
|
|
return ((*(p+1) & 0x1) << 16L) | (*(p+2) << 8L) | *(p+3);
|
|
}
|
|
|
|
static __u16
|
|
smb_bcc(__u8 * packet)
|
|
{
|
|
int pos = SMB_HEADER_LEN + SMB_WCT(packet) * sizeof(__u16);
|
|
return WVAL(packet, pos);
|
|
}
|
|
|
|
/* smb_valid_packet: We check if packet fulfills the basic
|
|
requirements of a smb packet */
|
|
|
|
static int
|
|
smb_valid_packet(__u8 * packet)
|
|
{
|
|
return (packet[4] == 0xff
|
|
&& packet[5] == 'S'
|
|
&& packet[6] == 'M'
|
|
&& packet[7] == 'B'
|
|
&& (smb_len(packet) + 4 == SMB_HEADER_LEN
|
|
+ SMB_WCT(packet) * 2 + smb_bcc(packet)));
|
|
}
|
|
|
|
/* smb_verify: We check if we got the answer we expected, and if we
|
|
got enough data. If bcc == -1, we don't care. */
|
|
|
|
static int
|
|
smb_verify(__u8 * packet, int command, int wct, int bcc)
|
|
{
|
|
if (SMB_CMD(packet) != command)
|
|
goto bad_command;
|
|
if (SMB_WCT(packet) < wct)
|
|
goto bad_wct;
|
|
if (bcc != -1 && smb_bcc(packet) < bcc)
|
|
goto bad_bcc;
|
|
return 0;
|
|
|
|
bad_command:
|
|
printk(KERN_ERR "smb_verify: command=%x, SMB_CMD=%x??\n",
|
|
command, SMB_CMD(packet));
|
|
goto fail;
|
|
bad_wct:
|
|
printk(KERN_ERR "smb_verify: command=%x, wct=%d, SMB_WCT=%d??\n",
|
|
command, wct, SMB_WCT(packet));
|
|
goto fail;
|
|
bad_bcc:
|
|
printk(KERN_ERR "smb_verify: command=%x, bcc=%d, SMB_BCC=%d??\n",
|
|
command, bcc, smb_bcc(packet));
|
|
fail:
|
|
return -EIO;
|
|
}
|
|
|
|
/*
|
|
* Returns the maximum read or write size for the "payload". Making all of the
|
|
* packet fit within the negotiated max_xmit size.
|
|
*
|
|
* N.B. Since this value is usually computed before locking the server,
|
|
* the server's packet size must never be decreased!
|
|
*/
|
|
static inline int
|
|
smb_get_xmitsize(struct smb_sb_info *server, int overhead)
|
|
{
|
|
return server->opt.max_xmit - overhead;
|
|
}
|
|
|
|
/*
|
|
* Calculate the maximum read size
|
|
*/
|
|
int
|
|
smb_get_rsize(struct smb_sb_info *server)
|
|
{
|
|
/* readX has 12 parameters, read has 5 */
|
|
int overhead = SMB_HEADER_LEN + 12 * sizeof(__u16) + 2 + 1 + 2;
|
|
int size = smb_get_xmitsize(server, overhead);
|
|
|
|
VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Calculate the maximum write size
|
|
*/
|
|
int
|
|
smb_get_wsize(struct smb_sb_info *server)
|
|
{
|
|
/* writeX has 14 parameters, write has 5 */
|
|
int overhead = SMB_HEADER_LEN + 14 * sizeof(__u16) + 2 + 1 + 2;
|
|
int size = smb_get_xmitsize(server, overhead);
|
|
|
|
VERBOSE("xmit=%d, size=%d\n", server->opt.max_xmit, size);
|
|
|
|
return size;
|
|
}
|
|
|
|
/*
|
|
* Convert SMB error codes to -E... errno values.
|
|
*/
|
|
int
|
|
smb_errno(struct smb_request *req)
|
|
{
|
|
int errcls = req->rq_rcls;
|
|
int error = req->rq_err;
|
|
char *class = "Unknown";
|
|
|
|
VERBOSE("errcls %d code %d from command 0x%x\n",
|
|
errcls, error, SMB_CMD(req->rq_header));
|
|
|
|
if (errcls == ERRDOS) {
|
|
switch (error) {
|
|
case ERRbadfunc:
|
|
return -EINVAL;
|
|
case ERRbadfile:
|
|
case ERRbadpath:
|
|
return -ENOENT;
|
|
case ERRnofids:
|
|
return -EMFILE;
|
|
case ERRnoaccess:
|
|
return -EACCES;
|
|
case ERRbadfid:
|
|
return -EBADF;
|
|
case ERRbadmcb:
|
|
return -EREMOTEIO;
|
|
case ERRnomem:
|
|
return -ENOMEM;
|
|
case ERRbadmem:
|
|
return -EFAULT;
|
|
case ERRbadenv:
|
|
case ERRbadformat:
|
|
return -EREMOTEIO;
|
|
case ERRbadaccess:
|
|
return -EACCES;
|
|
case ERRbaddata:
|
|
return -E2BIG;
|
|
case ERRbaddrive:
|
|
return -ENXIO;
|
|
case ERRremcd:
|
|
return -EREMOTEIO;
|
|
case ERRdiffdevice:
|
|
return -EXDEV;
|
|
case ERRnofiles:
|
|
return -ENOENT;
|
|
case ERRbadshare:
|
|
return -ETXTBSY;
|
|
case ERRlock:
|
|
return -EDEADLK;
|
|
case ERRfilexists:
|
|
return -EEXIST;
|
|
case ERROR_INVALID_PARAMETER:
|
|
return -EINVAL;
|
|
case ERROR_DISK_FULL:
|
|
return -ENOSPC;
|
|
case ERROR_INVALID_NAME:
|
|
return -ENOENT;
|
|
case ERROR_DIR_NOT_EMPTY:
|
|
return -ENOTEMPTY;
|
|
case ERROR_NOT_LOCKED:
|
|
return -ENOLCK;
|
|
case ERROR_ALREADY_EXISTS:
|
|
return -EEXIST;
|
|
default:
|
|
class = "ERRDOS";
|
|
goto err_unknown;
|
|
}
|
|
} else if (errcls == ERRSRV) {
|
|
switch (error) {
|
|
/* N.B. This is wrong ... EIO ? */
|
|
case ERRerror:
|
|
return -ENFILE;
|
|
case ERRbadpw:
|
|
return -EINVAL;
|
|
case ERRbadtype:
|
|
case ERRtimeout:
|
|
return -EIO;
|
|
case ERRaccess:
|
|
return -EACCES;
|
|
/*
|
|
* This is a fatal error, as it means the "tree ID"
|
|
* for this connection is no longer valid. We map
|
|
* to a special error code and get a new connection.
|
|
*/
|
|
case ERRinvnid:
|
|
return -EBADSLT;
|
|
default:
|
|
class = "ERRSRV";
|
|
goto err_unknown;
|
|
}
|
|
} else if (errcls == ERRHRD) {
|
|
switch (error) {
|
|
case ERRnowrite:
|
|
return -EROFS;
|
|
case ERRbadunit:
|
|
return -ENODEV;
|
|
case ERRnotready:
|
|
return -EUCLEAN;
|
|
case ERRbadcmd:
|
|
case ERRdata:
|
|
return -EIO;
|
|
case ERRbadreq:
|
|
return -ERANGE;
|
|
case ERRbadshare:
|
|
return -ETXTBSY;
|
|
case ERRlock:
|
|
return -EDEADLK;
|
|
case ERRdiskfull:
|
|
return -ENOSPC;
|
|
default:
|
|
class = "ERRHRD";
|
|
goto err_unknown;
|
|
}
|
|
} else if (errcls == ERRCMD) {
|
|
class = "ERRCMD";
|
|
} else if (errcls == SUCCESS) {
|
|
return 0; /* This is the only valid 0 return */
|
|
}
|
|
|
|
err_unknown:
|
|
printk(KERN_ERR "smb_errno: class %s, code %d from command 0x%x\n",
|
|
class, error, SMB_CMD(req->rq_header));
|
|
return -EIO;
|
|
}
|
|
|
|
/* smb_request_ok: We expect the server to be locked. Then we do the
|
|
request and check the answer completely. When smb_request_ok
|
|
returns 0, you can be quite sure that everything went well. When
|
|
the answer is <=0, the returned number is a valid unix errno. */
|
|
|
|
static int
|
|
smb_request_ok(struct smb_request *req, int command, int wct, int bcc)
|
|
{
|
|
int result;
|
|
|
|
req->rq_resp_wct = wct;
|
|
req->rq_resp_bcc = bcc;
|
|
|
|
result = smb_add_request(req);
|
|
if (result != 0) {
|
|
DEBUG1("smb_request failed\n");
|
|
goto out;
|
|
}
|
|
|
|
if (smb_valid_packet(req->rq_header) != 0) {
|
|
PARANOIA("invalid packet!\n");
|
|
goto out;
|
|
}
|
|
|
|
result = smb_verify(req->rq_header, command, wct, bcc);
|
|
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* This implements the NEWCONN ioctl. It installs the server pid,
|
|
* sets server->state to CONN_VALID, and wakes up the waiting process.
|
|
*/
|
|
int
|
|
smb_newconn(struct smb_sb_info *server, struct smb_conn_opt *opt)
|
|
{
|
|
struct file *filp;
|
|
struct sock *sk;
|
|
int error;
|
|
|
|
VERBOSE("fd=%d, pid=%d\n", opt->fd, current->pid);
|
|
|
|
smb_lock_server(server);
|
|
|
|
/*
|
|
* Make sure we don't already have a valid connection ...
|
|
*/
|
|
error = -EINVAL;
|
|
if (server->state == CONN_VALID)
|
|
goto out;
|
|
|
|
error = -EACCES;
|
|
if (current_uid() != server->mnt->mounted_uid &&
|
|
!capable(CAP_SYS_ADMIN))
|
|
goto out;
|
|
|
|
error = -EBADF;
|
|
filp = fget(opt->fd);
|
|
if (!filp)
|
|
goto out;
|
|
if (!smb_valid_socket(filp->f_path.dentry->d_inode))
|
|
goto out_putf;
|
|
|
|
server->sock_file = filp;
|
|
server->conn_pid = get_pid(task_pid(current));
|
|
server->opt = *opt;
|
|
server->generation += 1;
|
|
server->state = CONN_VALID;
|
|
error = 0;
|
|
|
|
if (server->conn_error) {
|
|
/*
|
|
* conn_error is the returncode we originally decided to
|
|
* drop the old connection on. This message should be positive
|
|
* and not make people ask questions on why smbfs is printing
|
|
* error messages ...
|
|
*/
|
|
printk(KERN_INFO "SMB connection re-established (%d)\n",
|
|
server->conn_error);
|
|
server->conn_error = 0;
|
|
}
|
|
|
|
/*
|
|
* Store the server in sock user_data (Only used by sunrpc)
|
|
*/
|
|
sk = SOCKET_I(filp->f_path.dentry->d_inode)->sk;
|
|
sk->sk_user_data = server;
|
|
|
|
/* chain into the data_ready callback */
|
|
server->data_ready = xchg(&sk->sk_data_ready, smb_data_ready);
|
|
|
|
/* check if we have an old smbmount that uses seconds for the
|
|
serverzone */
|
|
if (server->opt.serverzone > 12*60 || server->opt.serverzone < -12*60)
|
|
server->opt.serverzone /= 60;
|
|
|
|
/* now that we have an established connection we can detect the server
|
|
type and enable bug workarounds */
|
|
if (server->opt.protocol < SMB_PROTOCOL_LANMAN2)
|
|
install_ops(server->ops, &smb_ops_core);
|
|
else if (server->opt.protocol == SMB_PROTOCOL_LANMAN2)
|
|
install_ops(server->ops, &smb_ops_os2);
|
|
else if (server->opt.protocol == SMB_PROTOCOL_NT1 &&
|
|
(server->opt.max_xmit < 0x1000) &&
|
|
!(server->opt.capabilities & SMB_CAP_NT_SMBS)) {
|
|
/* FIXME: can we kill the WIN95 flag now? */
|
|
server->mnt->flags |= SMB_MOUNT_WIN95;
|
|
VERBOSE("detected WIN95 server\n");
|
|
install_ops(server->ops, &smb_ops_win95);
|
|
} else {
|
|
/*
|
|
* Samba has max_xmit 65535
|
|
* NT4spX has max_xmit 4536 (or something like that)
|
|
* win2k has ...
|
|
*/
|
|
VERBOSE("detected NT1 (Samba, NT4/5) server\n");
|
|
install_ops(server->ops, &smb_ops_winNT);
|
|
}
|
|
|
|
/* FIXME: the win9x code wants to modify these ... (seek/trunc bug) */
|
|
if (server->mnt->flags & SMB_MOUNT_OLDATTR) {
|
|
server->ops->getattr = smb_proc_getattr_core;
|
|
} else if (server->mnt->flags & SMB_MOUNT_DIRATTR) {
|
|
server->ops->getattr = smb_proc_getattr_ff;
|
|
}
|
|
|
|
/* Decode server capabilities */
|
|
if (server->opt.capabilities & SMB_CAP_LARGE_FILES) {
|
|
/* Should be ok to set this now, as no one can access the
|
|
mount until the connection has been established. */
|
|
SB_of(server)->s_maxbytes = ~0ULL >> 1;
|
|
VERBOSE("LFS enabled\n");
|
|
}
|
|
if (server->opt.capabilities & SMB_CAP_UNICODE) {
|
|
server->mnt->flags |= SMB_MOUNT_UNICODE;
|
|
VERBOSE("Unicode enabled\n");
|
|
} else {
|
|
server->mnt->flags &= ~SMB_MOUNT_UNICODE;
|
|
}
|
|
#if 0
|
|
/* flags we may test for other patches ... */
|
|
if (server->opt.capabilities & SMB_CAP_LARGE_READX) {
|
|
VERBOSE("Large reads enabled\n");
|
|
}
|
|
if (server->opt.capabilities & SMB_CAP_LARGE_WRITEX) {
|
|
VERBOSE("Large writes enabled\n");
|
|
}
|
|
#endif
|
|
if (server->opt.capabilities & SMB_CAP_UNIX) {
|
|
struct inode *inode;
|
|
VERBOSE("Using UNIX CIFS extensions\n");
|
|
install_ops(server->ops, &smb_ops_unix);
|
|
inode = SB_of(server)->s_root->d_inode;
|
|
if (inode)
|
|
inode->i_op = &smb_dir_inode_operations_unix;
|
|
}
|
|
|
|
VERBOSE("protocol=%d, max_xmit=%d, pid=%d capabilities=0x%x\n",
|
|
server->opt.protocol, server->opt.max_xmit,
|
|
pid_nr(server->conn_pid), server->opt.capabilities);
|
|
|
|
/* FIXME: this really should be done by smbmount. */
|
|
if (server->opt.max_xmit > SMB_MAX_PACKET_SIZE) {
|
|
server->opt.max_xmit = SMB_MAX_PACKET_SIZE;
|
|
}
|
|
|
|
smb_unlock_server(server);
|
|
smbiod_wake_up();
|
|
if (server->opt.capabilities & SMB_CAP_UNIX)
|
|
smb_proc_query_cifsunix(server);
|
|
|
|
server->conn_complete++;
|
|
wake_up_interruptible_all(&server->conn_wq);
|
|
return error;
|
|
|
|
out:
|
|
smb_unlock_server(server);
|
|
smbiod_wake_up();
|
|
return error;
|
|
|
|
out_putf:
|
|
fput(filp);
|
|
goto out;
|
|
}
|
|
|
|
/* smb_setup_header: We completely set up the packet. You only have to
|
|
insert the command-specific fields */
|
|
|
|
__u8 *
|
|
smb_setup_header(struct smb_request *req, __u8 command, __u16 wct, __u16 bcc)
|
|
{
|
|
__u32 xmit_len = SMB_HEADER_LEN + wct * sizeof(__u16) + bcc + 2;
|
|
__u8 *p = req->rq_header;
|
|
struct smb_sb_info *server = req->rq_server;
|
|
|
|
p = smb_encode_smb_length(p, xmit_len - 4);
|
|
|
|
*p++ = 0xff;
|
|
*p++ = 'S';
|
|
*p++ = 'M';
|
|
*p++ = 'B';
|
|
*p++ = command;
|
|
|
|
memset(p, '\0', 19);
|
|
p += 19;
|
|
p += 8;
|
|
|
|
if (server->opt.protocol > SMB_PROTOCOL_CORE) {
|
|
int flags = SMB_FLAGS_CASELESS_PATHNAMES;
|
|
int flags2 = SMB_FLAGS2_LONG_PATH_COMPONENTS |
|
|
SMB_FLAGS2_EXTENDED_ATTRIBUTES; /* EA? not really ... */
|
|
|
|
*(req->rq_header + smb_flg) = flags;
|
|
if (server->mnt->flags & SMB_MOUNT_UNICODE)
|
|
flags2 |= SMB_FLAGS2_UNICODE_STRINGS;
|
|
WSET(req->rq_header, smb_flg2, flags2);
|
|
}
|
|
*p++ = wct; /* wct */
|
|
p += 2 * wct;
|
|
WSET(p, 0, bcc);
|
|
|
|
/* Include the header in the data to send */
|
|
req->rq_iovlen = 1;
|
|
req->rq_iov[0].iov_base = req->rq_header;
|
|
req->rq_iov[0].iov_len = xmit_len - bcc;
|
|
|
|
return req->rq_buffer;
|
|
}
|
|
|
|
static void
|
|
smb_setup_bcc(struct smb_request *req, __u8 *p)
|
|
{
|
|
u16 bcc = p - req->rq_buffer;
|
|
u8 *pbcc = req->rq_header + SMB_HEADER_LEN + 2*SMB_WCT(req->rq_header);
|
|
|
|
WSET(pbcc, 0, bcc);
|
|
|
|
smb_encode_smb_length(req->rq_header, SMB_HEADER_LEN +
|
|
2*SMB_WCT(req->rq_header) - 2 + bcc);
|
|
|
|
/* Include the "bytes" in the data to send */
|
|
req->rq_iovlen = 2;
|
|
req->rq_iov[1].iov_base = req->rq_buffer;
|
|
req->rq_iov[1].iov_len = bcc;
|
|
}
|
|
|
|
static int
|
|
smb_proc_seek(struct smb_sb_info *server, __u16 fileid,
|
|
__u16 mode, off_t offset)
|
|
{
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBlseek, 4, 0);
|
|
WSET(req->rq_header, smb_vwv0, fileid);
|
|
WSET(req->rq_header, smb_vwv1, mode);
|
|
DSET(req->rq_header, smb_vwv2, offset);
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
|
|
result = smb_request_ok(req, SMBlseek, 2, 0);
|
|
if (result < 0) {
|
|
result = 0;
|
|
goto out_free;
|
|
}
|
|
|
|
result = DVAL(req->rq_header, smb_vwv0);
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_open(struct smb_sb_info *server, struct dentry *dentry, int wish)
|
|
{
|
|
struct inode *ino = dentry->d_inode;
|
|
struct smb_inode_info *ei = SMB_I(ino);
|
|
int mode, read_write = 0x42, read_only = 0x40;
|
|
int res;
|
|
char *p;
|
|
struct smb_request *req;
|
|
|
|
/*
|
|
* Attempt to open r/w, unless there are no write privileges.
|
|
*/
|
|
mode = read_write;
|
|
if (!(ino->i_mode & (S_IWUSR | S_IWGRP | S_IWOTH)))
|
|
mode = read_only;
|
|
#if 0
|
|
/* FIXME: why is this code not in? below we fix it so that a caller
|
|
wanting RO doesn't get RW. smb_revalidate_inode does some
|
|
optimization based on access mode. tail -f needs it to be correct.
|
|
|
|
We must open rw since we don't do the open if called a second time
|
|
with different 'wish'. Is that not supported by smb servers? */
|
|
if (!(wish & (O_WRONLY | O_RDWR)))
|
|
mode = read_only;
|
|
#endif
|
|
|
|
res = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
retry:
|
|
p = smb_setup_header(req, SMBopen, 2, 0);
|
|
WSET(req->rq_header, smb_vwv0, mode);
|
|
WSET(req->rq_header, smb_vwv1, aSYSTEM | aHIDDEN | aDIR);
|
|
res = smb_simple_encode_path(req, &p, dentry, NULL);
|
|
if (res < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
res = smb_request_ok(req, SMBopen, 7, 0);
|
|
if (res != 0) {
|
|
if (mode == read_write &&
|
|
(res == -EACCES || res == -ETXTBSY || res == -EROFS))
|
|
{
|
|
VERBOSE("%s/%s R/W failed, error=%d, retrying R/O\n",
|
|
DENTRY_PATH(dentry), res);
|
|
mode = read_only;
|
|
req->rq_flags = 0;
|
|
goto retry;
|
|
}
|
|
goto out_free;
|
|
}
|
|
/* We should now have data in vwv[0..6]. */
|
|
|
|
ei->fileid = WVAL(req->rq_header, smb_vwv0);
|
|
ei->attr = WVAL(req->rq_header, smb_vwv1);
|
|
/* smb_vwv2 has mtime */
|
|
/* smb_vwv4 has size */
|
|
ei->access = (WVAL(req->rq_header, smb_vwv6) & SMB_ACCMASK);
|
|
ei->open = server->generation;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return res;
|
|
}
|
|
|
|
/*
|
|
* Make sure the file is open, and check that the access
|
|
* is compatible with the desired access.
|
|
*/
|
|
int
|
|
smb_open(struct dentry *dentry, int wish)
|
|
{
|
|
struct inode *inode = dentry->d_inode;
|
|
int result;
|
|
__u16 access;
|
|
|
|
result = -ENOENT;
|
|
if (!inode) {
|
|
printk(KERN_ERR "smb_open: no inode for dentry %s/%s\n",
|
|
DENTRY_PATH(dentry));
|
|
goto out;
|
|
}
|
|
|
|
if (!smb_is_open(inode)) {
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
result = 0;
|
|
if (!smb_is_open(inode))
|
|
result = smb_proc_open(server, dentry, wish);
|
|
if (result)
|
|
goto out;
|
|
/*
|
|
* A successful open means the path is still valid ...
|
|
*/
|
|
smb_renew_times(dentry);
|
|
}
|
|
|
|
/*
|
|
* Check whether the access is compatible with the desired mode.
|
|
*/
|
|
result = 0;
|
|
access = SMB_I(inode)->access;
|
|
if (access != wish && access != SMB_O_RDWR) {
|
|
PARANOIA("%s/%s access denied, access=%x, wish=%x\n",
|
|
DENTRY_PATH(dentry), access, wish);
|
|
result = -EACCES;
|
|
}
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_close(struct smb_sb_info *server, __u16 fileid, __u32 mtime)
|
|
{
|
|
struct smb_request *req;
|
|
int result = -ENOMEM;
|
|
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBclose, 3, 0);
|
|
WSET(req->rq_header, smb_vwv0, fileid);
|
|
DSET(req->rq_header, smb_vwv1, utc2local(server, mtime));
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
result = smb_request_ok(req, SMBclose, 0, 0);
|
|
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Win NT 4.0 has an apparent bug in that it fails to update the
|
|
* modify time when writing to a file. As a workaround, we update
|
|
* both modify and access time locally, and post the times to the
|
|
* server when closing the file.
|
|
*/
|
|
static int
|
|
smb_proc_close_inode(struct smb_sb_info *server, struct inode * ino)
|
|
{
|
|
struct smb_inode_info *ei = SMB_I(ino);
|
|
int result = 0;
|
|
if (smb_is_open(ino))
|
|
{
|
|
/*
|
|
* We clear the open flag in advance, in case another
|
|
* process observes the value while we block below.
|
|
*/
|
|
ei->open = 0;
|
|
|
|
/*
|
|
* Kludge alert: SMB timestamps are accurate only to
|
|
* two seconds ... round the times to avoid needless
|
|
* cache invalidations!
|
|
*/
|
|
if (ino->i_mtime.tv_sec & 1) {
|
|
ino->i_mtime.tv_sec--;
|
|
ino->i_mtime.tv_nsec = 0;
|
|
}
|
|
if (ino->i_atime.tv_sec & 1) {
|
|
ino->i_atime.tv_sec--;
|
|
ino->i_atime.tv_nsec = 0;
|
|
}
|
|
/*
|
|
* If the file is open with write permissions,
|
|
* update the time stamps to sync mtime and atime.
|
|
*/
|
|
if ((server->opt.capabilities & SMB_CAP_UNIX) == 0 &&
|
|
(server->opt.protocol >= SMB_PROTOCOL_LANMAN2) &&
|
|
!(ei->access == SMB_O_RDONLY))
|
|
{
|
|
struct smb_fattr fattr;
|
|
smb_get_inode_attr(ino, &fattr);
|
|
smb_proc_setattr_ext(server, ino, &fattr);
|
|
}
|
|
|
|
result = smb_proc_close(server, ei->fileid, ino->i_mtime.tv_sec);
|
|
/*
|
|
* Force a revalidation after closing ... some servers
|
|
* don't post the size until the file has been closed.
|
|
*/
|
|
if (server->opt.protocol < SMB_PROTOCOL_NT1)
|
|
ei->oldmtime = 0;
|
|
ei->closed = jiffies;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_close(struct inode *ino)
|
|
{
|
|
int result = 0;
|
|
|
|
if (smb_is_open(ino)) {
|
|
struct smb_sb_info *server = server_from_inode(ino);
|
|
result = smb_proc_close_inode(server, ino);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* This is used to close a file following a failed instantiate.
|
|
* Since we don't have an inode, we can't use any of the above.
|
|
*/
|
|
int
|
|
smb_close_fileid(struct dentry *dentry, __u16 fileid)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dentry);
|
|
int result;
|
|
|
|
result = smb_proc_close(server, fileid, get_seconds());
|
|
return result;
|
|
}
|
|
|
|
/* In smb_proc_read and smb_proc_write we do not retry, because the
|
|
file-id would not be valid after a reconnection. */
|
|
|
|
static void
|
|
smb_proc_read_data(struct smb_request *req)
|
|
{
|
|
req->rq_iov[0].iov_base = req->rq_buffer;
|
|
req->rq_iov[0].iov_len = 3;
|
|
|
|
req->rq_iov[1].iov_base = req->rq_page;
|
|
req->rq_iov[1].iov_len = req->rq_rsize;
|
|
req->rq_iovlen = 2;
|
|
|
|
req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
|
|
}
|
|
|
|
static int
|
|
smb_proc_read(struct inode *inode, loff_t offset, int count, char *data)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
__u16 returned_count, data_len;
|
|
unsigned char *buf;
|
|
int result;
|
|
struct smb_request *req;
|
|
u8 rbuf[4];
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBread, 5, 0);
|
|
buf = req->rq_header;
|
|
WSET(buf, smb_vwv0, SMB_I(inode)->fileid);
|
|
WSET(buf, smb_vwv1, count);
|
|
DSET(buf, smb_vwv2, offset);
|
|
WSET(buf, smb_vwv4, 0);
|
|
|
|
req->rq_page = data;
|
|
req->rq_rsize = count;
|
|
req->rq_callback = smb_proc_read_data;
|
|
req->rq_buffer = rbuf;
|
|
req->rq_flags |= SMB_REQ_NORETRY | SMB_REQ_STATIC;
|
|
|
|
result = smb_request_ok(req, SMBread, 5, -1);
|
|
if (result < 0)
|
|
goto out_free;
|
|
returned_count = WVAL(req->rq_header, smb_vwv0);
|
|
|
|
data_len = WVAL(rbuf, 1);
|
|
|
|
if (returned_count != data_len) {
|
|
printk(KERN_NOTICE "smb_proc_read: returned != data_len\n");
|
|
printk(KERN_NOTICE "smb_proc_read: ret_c=%d, data_len=%d\n",
|
|
returned_count, data_len);
|
|
}
|
|
result = data_len;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
|
|
inode->i_ino, SMB_I(inode)->fileid, count, result);
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_write(struct inode *inode, loff_t offset, int count, const char *data)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
int result;
|
|
u16 fileid = SMB_I(inode)->fileid;
|
|
u8 buf[4];
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
|
|
inode->i_ino, fileid, count, offset);
|
|
|
|
smb_setup_header(req, SMBwrite, 5, count + 3);
|
|
WSET(req->rq_header, smb_vwv0, fileid);
|
|
WSET(req->rq_header, smb_vwv1, count);
|
|
DSET(req->rq_header, smb_vwv2, offset);
|
|
WSET(req->rq_header, smb_vwv4, 0);
|
|
|
|
buf[0] = 1;
|
|
WSET(buf, 1, count); /* yes, again ... */
|
|
req->rq_iov[1].iov_base = buf;
|
|
req->rq_iov[1].iov_len = 3;
|
|
req->rq_iov[2].iov_base = (char *) data;
|
|
req->rq_iov[2].iov_len = count;
|
|
req->rq_iovlen = 3;
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
|
|
result = smb_request_ok(req, SMBwrite, 1, 0);
|
|
if (result >= 0)
|
|
result = WVAL(req->rq_header, smb_vwv0);
|
|
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* In smb_proc_readX and smb_proc_writeX we do not retry, because the
|
|
* file-id would not be valid after a reconnection.
|
|
*/
|
|
|
|
#define SMB_READX_MAX_PAD 64
|
|
static void
|
|
smb_proc_readX_data(struct smb_request *req)
|
|
{
|
|
/* header length, excluding the netbios length (-4) */
|
|
int hdrlen = SMB_HEADER_LEN + req->rq_resp_wct*2 - 2;
|
|
int data_off = WVAL(req->rq_header, smb_vwv6);
|
|
|
|
/*
|
|
* Some genius made the padding to the data bytes arbitrary.
|
|
* So we must first calculate the amount of padding used by the server.
|
|
*/
|
|
data_off -= hdrlen;
|
|
if (data_off > SMB_READX_MAX_PAD || data_off < 0) {
|
|
PARANOIA("offset is larger than SMB_READX_MAX_PAD or negative!\n");
|
|
PARANOIA("%d > %d || %d < 0\n", data_off, SMB_READX_MAX_PAD, data_off);
|
|
req->rq_rlen = req->rq_bufsize + 1;
|
|
return;
|
|
}
|
|
req->rq_iov[0].iov_base = req->rq_buffer;
|
|
req->rq_iov[0].iov_len = data_off;
|
|
|
|
req->rq_iov[1].iov_base = req->rq_page;
|
|
req->rq_iov[1].iov_len = req->rq_rsize;
|
|
req->rq_iovlen = 2;
|
|
|
|
req->rq_rlen = smb_len(req->rq_header) + 4 - req->rq_bytes_recvd;
|
|
}
|
|
|
|
static int
|
|
smb_proc_readX(struct inode *inode, loff_t offset, int count, char *data)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
unsigned char *buf;
|
|
int result;
|
|
struct smb_request *req;
|
|
static char pad[SMB_READX_MAX_PAD];
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBreadX, 12, 0);
|
|
buf = req->rq_header;
|
|
WSET(buf, smb_vwv0, 0x00ff);
|
|
WSET(buf, smb_vwv1, 0);
|
|
WSET(buf, smb_vwv2, SMB_I(inode)->fileid);
|
|
DSET(buf, smb_vwv3, (u32)offset); /* low 32 bits */
|
|
WSET(buf, smb_vwv5, count);
|
|
WSET(buf, smb_vwv6, 0);
|
|
DSET(buf, smb_vwv7, 0);
|
|
WSET(buf, smb_vwv9, 0);
|
|
DSET(buf, smb_vwv10, (u32)(offset >> 32)); /* high 32 bits */
|
|
WSET(buf, smb_vwv11, 0);
|
|
|
|
req->rq_page = data;
|
|
req->rq_rsize = count;
|
|
req->rq_callback = smb_proc_readX_data;
|
|
req->rq_buffer = pad;
|
|
req->rq_bufsize = SMB_READX_MAX_PAD;
|
|
req->rq_flags |= SMB_REQ_STATIC | SMB_REQ_NORETRY;
|
|
|
|
result = smb_request_ok(req, SMBreadX, 12, -1);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = WVAL(req->rq_header, smb_vwv5);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
VERBOSE("ino=%ld, fileid=%d, count=%d, result=%d\n",
|
|
inode->i_ino, SMB_I(inode)->fileid, count, result);
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_writeX(struct inode *inode, loff_t offset, int count, const char *data)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
int result;
|
|
u8 *p;
|
|
static u8 pad[4];
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
VERBOSE("ino=%ld, fileid=%d, count=%d@%Ld\n",
|
|
inode->i_ino, SMB_I(inode)->fileid, count, offset);
|
|
|
|
p = smb_setup_header(req, SMBwriteX, 14, count + 1);
|
|
WSET(req->rq_header, smb_vwv0, 0x00ff);
|
|
WSET(req->rq_header, smb_vwv1, 0);
|
|
WSET(req->rq_header, smb_vwv2, SMB_I(inode)->fileid);
|
|
DSET(req->rq_header, smb_vwv3, (u32)offset); /* low 32 bits */
|
|
DSET(req->rq_header, smb_vwv5, 0);
|
|
WSET(req->rq_header, smb_vwv7, 0); /* write mode */
|
|
WSET(req->rq_header, smb_vwv8, 0);
|
|
WSET(req->rq_header, smb_vwv9, 0);
|
|
WSET(req->rq_header, smb_vwv10, count); /* data length */
|
|
WSET(req->rq_header, smb_vwv11, smb_vwv12 + 2 + 1);
|
|
DSET(req->rq_header, smb_vwv12, (u32)(offset >> 32));
|
|
|
|
req->rq_iov[1].iov_base = pad;
|
|
req->rq_iov[1].iov_len = 1;
|
|
req->rq_iov[2].iov_base = (char *) data;
|
|
req->rq_iov[2].iov_len = count;
|
|
req->rq_iovlen = 3;
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
|
|
result = smb_request_ok(req, SMBwriteX, 6, 0);
|
|
if (result >= 0)
|
|
result = WVAL(req->rq_header, smb_vwv2);
|
|
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_create(struct dentry *dentry, __u16 attr, time_t ctime, __u16 *fileid)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dentry);
|
|
char *p;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
p = smb_setup_header(req, SMBcreate, 3, 0);
|
|
WSET(req->rq_header, smb_vwv0, attr);
|
|
DSET(req->rq_header, smb_vwv1, utc2local(server, ctime));
|
|
result = smb_simple_encode_path(req, &p, dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
result = smb_request_ok(req, SMBcreate, 1, 0);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
*fileid = WVAL(req->rq_header, smb_vwv0);
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_mv(struct dentry *old_dentry, struct dentry *new_dentry)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(old_dentry);
|
|
char *p;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
p = smb_setup_header(req, SMBmv, 1, 0);
|
|
WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN | aDIR);
|
|
result = smb_simple_encode_path(req, &p, old_dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = smb_simple_encode_path(req, &p, new_dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
if ((result = smb_request_ok(req, SMBmv, 0, 0)) < 0)
|
|
goto out_free;
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Code common to mkdir and rmdir.
|
|
*/
|
|
static int
|
|
smb_proc_generic_command(struct dentry *dentry, __u8 command)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dentry);
|
|
char *p;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
p = smb_setup_header(req, command, 0, 0);
|
|
result = smb_simple_encode_path(req, &p, dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
result = smb_request_ok(req, command, 0, 0);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_mkdir(struct dentry *dentry)
|
|
{
|
|
return smb_proc_generic_command(dentry, SMBmkdir);
|
|
}
|
|
|
|
int
|
|
smb_proc_rmdir(struct dentry *dentry)
|
|
{
|
|
return smb_proc_generic_command(dentry, SMBrmdir);
|
|
}
|
|
|
|
#if SMBFS_POSIX_UNLINK
|
|
/*
|
|
* Removes readonly attribute from a file. Used by unlink to give posix
|
|
* semantics.
|
|
*/
|
|
static int
|
|
smb_set_rw(struct dentry *dentry,struct smb_sb_info *server)
|
|
{
|
|
int result;
|
|
struct smb_fattr fattr;
|
|
|
|
/* FIXME: cifsUE should allow removing a readonly file. */
|
|
|
|
/* first get current attribute */
|
|
smb_init_dirent(server, &fattr);
|
|
result = server->ops->getattr(server, dentry, &fattr);
|
|
smb_finish_dirent(server, &fattr);
|
|
if (result < 0)
|
|
return result;
|
|
|
|
/* if RONLY attribute is set, remove it */
|
|
if (fattr.attr & aRONLY) { /* read only attribute is set */
|
|
fattr.attr &= ~aRONLY;
|
|
result = smb_proc_setattr_core(server, dentry, fattr.attr);
|
|
}
|
|
return result;
|
|
}
|
|
#endif
|
|
|
|
int
|
|
smb_proc_unlink(struct dentry *dentry)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dentry);
|
|
int flag = 0;
|
|
char *p;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
retry:
|
|
p = smb_setup_header(req, SMBunlink, 1, 0);
|
|
WSET(req->rq_header, smb_vwv0, aSYSTEM | aHIDDEN);
|
|
result = smb_simple_encode_path(req, &p, dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
if ((result = smb_request_ok(req, SMBunlink, 0, 0)) < 0) {
|
|
#if SMBFS_POSIX_UNLINK
|
|
if (result == -EACCES && !flag) {
|
|
/* Posix semantics is for the read-only state
|
|
of a file to be ignored in unlink(). In the
|
|
SMB world a unlink() is refused on a
|
|
read-only file. To make things easier for
|
|
unix users we try to override the files
|
|
permission if the unlink fails with the
|
|
right error.
|
|
This introduces a race condition that could
|
|
lead to a file being written by someone who
|
|
shouldn't have access, but as far as I can
|
|
tell that is unavoidable */
|
|
|
|
/* remove RONLY attribute and try again */
|
|
result = smb_set_rw(dentry,server);
|
|
if (result == 0) {
|
|
flag = 1;
|
|
req->rq_flags = 0;
|
|
goto retry;
|
|
}
|
|
}
|
|
#endif
|
|
goto out_free;
|
|
}
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_flush(struct smb_sb_info *server, __u16 fileid)
|
|
{
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBflush, 1, 0);
|
|
WSET(req->rq_header, smb_vwv0, fileid);
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
result = smb_request_ok(req, SMBflush, 0, 0);
|
|
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_trunc32(struct inode *inode, loff_t length)
|
|
{
|
|
/*
|
|
* Writing 0bytes is old-SMB magic for truncating files.
|
|
* MAX_NON_LFS should prevent this from being called with a too
|
|
* large offset.
|
|
*/
|
|
return smb_proc_write(inode, length, 0, NULL);
|
|
}
|
|
|
|
static int
|
|
smb_proc_trunc64(struct inode *inode, loff_t length)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
int result;
|
|
char *param;
|
|
char *data;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 14)))
|
|
goto out;
|
|
|
|
param = req->rq_buffer;
|
|
data = req->rq_buffer + 6;
|
|
|
|
/* FIXME: must we also set allocation size? winNT seems to do that */
|
|
WSET(param, 0, SMB_I(inode)->fileid);
|
|
WSET(param, 2, SMB_SET_FILE_END_OF_FILE_INFO);
|
|
WSET(param, 4, 0);
|
|
LSET(data, 0, length);
|
|
|
|
req->rq_trans2_command = TRANSACT2_SETFILEINFO;
|
|
req->rq_ldata = 8;
|
|
req->rq_data = data;
|
|
req->rq_lparm = 6;
|
|
req->rq_parm = param;
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
result = 0;
|
|
if (req->rq_rcls != 0)
|
|
result = smb_errno(req);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_trunc95(struct inode *inode, loff_t length)
|
|
{
|
|
struct smb_sb_info *server = server_from_inode(inode);
|
|
int result = smb_proc_trunc32(inode, length);
|
|
|
|
/*
|
|
* win9x doesn't appear to update the size immediately.
|
|
* It will return the old file size after the truncate,
|
|
* confusing smbfs. So we force an update.
|
|
*
|
|
* FIXME: is this still necessary?
|
|
*/
|
|
smb_proc_flush(server, SMB_I(inode)->fileid);
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
smb_init_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
|
|
{
|
|
memset(fattr, 0, sizeof(*fattr));
|
|
|
|
fattr->f_nlink = 1;
|
|
fattr->f_uid = server->mnt->uid;
|
|
fattr->f_gid = server->mnt->gid;
|
|
fattr->f_unix = 0;
|
|
}
|
|
|
|
static void
|
|
smb_finish_dirent(struct smb_sb_info *server, struct smb_fattr *fattr)
|
|
{
|
|
if (fattr->f_unix)
|
|
return;
|
|
|
|
fattr->f_mode = server->mnt->file_mode;
|
|
if (fattr->attr & aDIR) {
|
|
fattr->f_mode = server->mnt->dir_mode;
|
|
fattr->f_size = SMB_ST_BLKSIZE;
|
|
}
|
|
/* Check the read-only flag */
|
|
if (fattr->attr & aRONLY)
|
|
fattr->f_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH);
|
|
|
|
/* How many 512 byte blocks do we need for this file? */
|
|
fattr->f_blocks = 0;
|
|
if (fattr->f_size != 0)
|
|
fattr->f_blocks = 1 + ((fattr->f_size-1) >> 9);
|
|
return;
|
|
}
|
|
|
|
void
|
|
smb_init_root_dirent(struct smb_sb_info *server, struct smb_fattr *fattr,
|
|
struct super_block *sb)
|
|
{
|
|
smb_init_dirent(server, fattr);
|
|
fattr->attr = aDIR;
|
|
fattr->f_ino = 2; /* traditional root inode number */
|
|
fattr->f_mtime = current_fs_time(sb);
|
|
smb_finish_dirent(server, fattr);
|
|
}
|
|
|
|
/*
|
|
* Decode a dirent for old protocols
|
|
*
|
|
* qname is filled with the decoded, and possibly translated, name.
|
|
* fattr receives decoded attributes
|
|
*
|
|
* Bugs Noted:
|
|
* (1) Pathworks servers may pad the name with extra spaces.
|
|
*/
|
|
static char *
|
|
smb_decode_short_dirent(struct smb_sb_info *server, char *p,
|
|
struct qstr *qname, struct smb_fattr *fattr,
|
|
unsigned char *name_buf)
|
|
{
|
|
int len;
|
|
|
|
/*
|
|
* SMB doesn't have a concept of inode numbers ...
|
|
*/
|
|
smb_init_dirent(server, fattr);
|
|
fattr->f_ino = 0; /* FIXME: do we need this? */
|
|
|
|
p += SMB_STATUS_SIZE; /* reserved (search_status) */
|
|
fattr->attr = *p;
|
|
fattr->f_mtime.tv_sec = date_dos2unix(server, WVAL(p, 3), WVAL(p, 1));
|
|
fattr->f_mtime.tv_nsec = 0;
|
|
fattr->f_size = DVAL(p, 5);
|
|
fattr->f_ctime = fattr->f_mtime;
|
|
fattr->f_atime = fattr->f_mtime;
|
|
qname->name = p + 9;
|
|
len = strnlen(qname->name, 12);
|
|
|
|
/*
|
|
* Trim trailing blanks for Pathworks servers
|
|
*/
|
|
while (len > 2 && qname->name[len-1] == ' ')
|
|
len--;
|
|
|
|
smb_finish_dirent(server, fattr);
|
|
|
|
#if 0
|
|
/* FIXME: These only work for ascii chars, and recent smbmount doesn't
|
|
allow the flag to be set anyway. It kills const. Remove? */
|
|
switch (server->opt.case_handling) {
|
|
case SMB_CASE_UPPER:
|
|
str_upper(entry->name, len);
|
|
break;
|
|
case SMB_CASE_LOWER:
|
|
str_lower(entry->name, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
qname->len = 0;
|
|
len = server->ops->convert(name_buf, SMB_MAXNAMELEN,
|
|
qname->name, len,
|
|
server->remote_nls, server->local_nls);
|
|
if (len > 0) {
|
|
qname->len = len;
|
|
qname->name = name_buf;
|
|
DEBUG1("len=%d, name=%.*s\n",qname->len,qname->len,qname->name);
|
|
}
|
|
|
|
return p + 22;
|
|
}
|
|
|
|
/*
|
|
* This routine is used to read in directory entries from the network.
|
|
* Note that it is for short directory name seeks, i.e.: protocol <
|
|
* SMB_PROTOCOL_LANMAN2
|
|
*/
|
|
static int
|
|
smb_proc_readdir_short(struct file *filp, void *dirent, filldir_t filldir,
|
|
struct smb_cache_control *ctl)
|
|
{
|
|
struct dentry *dir = filp->f_path.dentry;
|
|
struct smb_sb_info *server = server_from_dentry(dir);
|
|
struct qstr qname;
|
|
struct smb_fattr fattr;
|
|
char *p;
|
|
int result;
|
|
int i, first, entries_seen, entries;
|
|
int entries_asked = (server->opt.max_xmit - 100) / SMB_DIRINFO_SIZE;
|
|
__u16 bcc;
|
|
__u16 count;
|
|
char status[SMB_STATUS_SIZE];
|
|
static struct qstr mask = {
|
|
.name = "*.*",
|
|
.len = 3,
|
|
};
|
|
unsigned char *last_status;
|
|
struct smb_request *req;
|
|
unsigned char *name_buf;
|
|
|
|
VERBOSE("%s/%s\n", DENTRY_PATH(dir));
|
|
|
|
lock_kernel();
|
|
|
|
result = -ENOMEM;
|
|
if (! (name_buf = kmalloc(SMB_MAXNAMELEN, GFP_KERNEL)))
|
|
goto out;
|
|
|
|
first = 1;
|
|
entries = 0;
|
|
entries_seen = 2; /* implicit . and .. */
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
|
|
goto out_name;
|
|
|
|
while (1) {
|
|
p = smb_setup_header(req, SMBsearch, 2, 0);
|
|
WSET(req->rq_header, smb_vwv0, entries_asked);
|
|
WSET(req->rq_header, smb_vwv1, aDIR);
|
|
if (first == 1) {
|
|
result = smb_simple_encode_path(req, &p, dir, &mask);
|
|
if (result < 0)
|
|
goto out_free;
|
|
if (p + 3 > (char *)req->rq_buffer + req->rq_bufsize) {
|
|
result = -ENAMETOOLONG;
|
|
goto out_free;
|
|
}
|
|
*p++ = 5;
|
|
WSET(p, 0, 0);
|
|
p += 2;
|
|
first = 0;
|
|
} else {
|
|
if (p + 5 + SMB_STATUS_SIZE >
|
|
(char *)req->rq_buffer + req->rq_bufsize) {
|
|
result = -ENAMETOOLONG;
|
|
goto out_free;
|
|
}
|
|
|
|
*p++ = 4;
|
|
*p++ = 0;
|
|
*p++ = 5;
|
|
WSET(p, 0, SMB_STATUS_SIZE);
|
|
p += 2;
|
|
memcpy(p, status, SMB_STATUS_SIZE);
|
|
p += SMB_STATUS_SIZE;
|
|
}
|
|
|
|
smb_setup_bcc(req, p);
|
|
|
|
result = smb_request_ok(req, SMBsearch, 1, -1);
|
|
if (result < 0) {
|
|
if ((req->rq_rcls == ERRDOS) &&
|
|
(req->rq_err == ERRnofiles))
|
|
break;
|
|
goto out_free;
|
|
}
|
|
count = WVAL(req->rq_header, smb_vwv0);
|
|
if (count <= 0)
|
|
break;
|
|
|
|
result = -EIO;
|
|
bcc = smb_bcc(req->rq_header);
|
|
if (bcc != count * SMB_DIRINFO_SIZE + 3)
|
|
goto out_free;
|
|
p = req->rq_buffer + 3;
|
|
|
|
|
|
/* Make sure the response fits in the buffer. Fixed sized
|
|
entries means we don't have to check in the decode loop. */
|
|
|
|
last_status = req->rq_buffer + 3 + (count-1) * SMB_DIRINFO_SIZE;
|
|
|
|
if (last_status + SMB_DIRINFO_SIZE >=
|
|
req->rq_buffer + req->rq_bufsize) {
|
|
printk(KERN_ERR "smb_proc_readdir_short: "
|
|
"last dir entry outside buffer! "
|
|
"%d@%p %d@%p\n", SMB_DIRINFO_SIZE, last_status,
|
|
req->rq_bufsize, req->rq_buffer);
|
|
goto out_free;
|
|
}
|
|
|
|
/* Read the last entry into the status field. */
|
|
memcpy(status, last_status, SMB_STATUS_SIZE);
|
|
|
|
|
|
/* Now we are ready to parse smb directory entries. */
|
|
|
|
for (i = 0; i < count; i++) {
|
|
p = smb_decode_short_dirent(server, p,
|
|
&qname, &fattr, name_buf);
|
|
if (qname.len == 0)
|
|
continue;
|
|
|
|
if (entries_seen == 2 && qname.name[0] == '.') {
|
|
if (qname.len == 1)
|
|
continue;
|
|
if (qname.name[1] == '.' && qname.len == 2)
|
|
continue;
|
|
}
|
|
if (!smb_fill_cache(filp, dirent, filldir, ctl,
|
|
&qname, &fattr))
|
|
; /* stop reading? */
|
|
entries_seen++;
|
|
}
|
|
}
|
|
result = entries;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out_name:
|
|
kfree(name_buf);
|
|
out:
|
|
unlock_kernel();
|
|
return result;
|
|
}
|
|
|
|
static void smb_decode_unix_basic(struct smb_fattr *fattr, struct smb_sb_info *server, char *p)
|
|
{
|
|
u64 size, disk_bytes;
|
|
|
|
/* FIXME: verify nls support. all is sent as utf8? */
|
|
|
|
fattr->f_unix = 1;
|
|
fattr->f_mode = 0;
|
|
|
|
/* FIXME: use the uniqueID from the remote instead? */
|
|
/* 0 L file size in bytes */
|
|
/* 8 L file size on disk in bytes (block count) */
|
|
/* 40 L uid */
|
|
/* 48 L gid */
|
|
/* 56 W file type */
|
|
/* 60 L devmajor */
|
|
/* 68 L devminor */
|
|
/* 76 L unique ID (inode) */
|
|
/* 84 L permissions */
|
|
/* 92 L link count */
|
|
|
|
size = LVAL(p, 0);
|
|
disk_bytes = LVAL(p, 8);
|
|
|
|
/*
|
|
* Some samba versions round up on-disk byte usage
|
|
* to 1MB boundaries, making it useless. When seeing
|
|
* that, use the size instead.
|
|
*/
|
|
if (!(disk_bytes & 0xfffff))
|
|
disk_bytes = size+511;
|
|
|
|
fattr->f_size = size;
|
|
fattr->f_blocks = disk_bytes >> 9;
|
|
fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 16));
|
|
fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 24));
|
|
fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 32));
|
|
|
|
if (server->mnt->flags & SMB_MOUNT_UID)
|
|
fattr->f_uid = server->mnt->uid;
|
|
else
|
|
fattr->f_uid = LVAL(p, 40);
|
|
|
|
if (server->mnt->flags & SMB_MOUNT_GID)
|
|
fattr->f_gid = server->mnt->gid;
|
|
else
|
|
fattr->f_gid = LVAL(p, 48);
|
|
|
|
fattr->f_mode |= smb_filetype_to_mode(WVAL(p, 56));
|
|
|
|
if (S_ISBLK(fattr->f_mode) || S_ISCHR(fattr->f_mode)) {
|
|
__u64 major = LVAL(p, 60);
|
|
__u64 minor = LVAL(p, 68);
|
|
|
|
fattr->f_rdev = MKDEV(major & 0xffffffff, minor & 0xffffffff);
|
|
if (MAJOR(fattr->f_rdev) != (major & 0xffffffff) ||
|
|
MINOR(fattr->f_rdev) != (minor & 0xffffffff))
|
|
fattr->f_rdev = 0;
|
|
}
|
|
|
|
fattr->f_mode |= LVAL(p, 84);
|
|
|
|
if ( (server->mnt->flags & SMB_MOUNT_DMODE) &&
|
|
(S_ISDIR(fattr->f_mode)) )
|
|
fattr->f_mode = (server->mnt->dir_mode & S_IRWXUGO) | S_IFDIR;
|
|
else if ( (server->mnt->flags & SMB_MOUNT_FMODE) &&
|
|
!(S_ISDIR(fattr->f_mode)) )
|
|
fattr->f_mode = (server->mnt->file_mode & S_IRWXUGO) |
|
|
(fattr->f_mode & S_IFMT);
|
|
|
|
}
|
|
|
|
/*
|
|
* Interpret a long filename structure using the specified info level:
|
|
* level 1 for anything below NT1 protocol
|
|
* level 260 for NT1 protocol
|
|
*
|
|
* qname is filled with the decoded, and possibly translated, name
|
|
* fattr receives decoded attributes.
|
|
*
|
|
* Bugs Noted:
|
|
* (1) Win NT 4.0 appends a null byte to names and counts it in the length!
|
|
*/
|
|
static char *
|
|
smb_decode_long_dirent(struct smb_sb_info *server, char *p, int level,
|
|
struct qstr *qname, struct smb_fattr *fattr,
|
|
unsigned char *name_buf)
|
|
{
|
|
char *result;
|
|
unsigned int len = 0;
|
|
int n;
|
|
__u16 date, time;
|
|
int unicode = (server->mnt->flags & SMB_MOUNT_UNICODE);
|
|
|
|
/*
|
|
* SMB doesn't have a concept of inode numbers ...
|
|
*/
|
|
smb_init_dirent(server, fattr);
|
|
fattr->f_ino = 0; /* FIXME: do we need this? */
|
|
|
|
switch (level) {
|
|
case 1:
|
|
len = *((unsigned char *) p + 22);
|
|
qname->name = p + 23;
|
|
result = p + 24 + len;
|
|
|
|
date = WVAL(p, 0);
|
|
time = WVAL(p, 2);
|
|
fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_ctime.tv_nsec = 0;
|
|
|
|
date = WVAL(p, 4);
|
|
time = WVAL(p, 6);
|
|
fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_atime.tv_nsec = 0;
|
|
|
|
date = WVAL(p, 8);
|
|
time = WVAL(p, 10);
|
|
fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_mtime.tv_nsec = 0;
|
|
fattr->f_size = DVAL(p, 12);
|
|
/* ULONG allocation size */
|
|
fattr->attr = WVAL(p, 20);
|
|
|
|
VERBOSE("info 1 at %p, len=%d, name=%.*s\n",
|
|
p, len, len, qname->name);
|
|
break;
|
|
case 260:
|
|
result = p + WVAL(p, 0);
|
|
len = DVAL(p, 60);
|
|
if (len > 255) len = 255;
|
|
/* NT4 null terminates, unless we are using unicode ... */
|
|
qname->name = p + 94;
|
|
if (!unicode && len && qname->name[len-1] == '\0')
|
|
len--;
|
|
|
|
fattr->f_ctime = smb_ntutc2unixutc(LVAL(p, 8));
|
|
fattr->f_atime = smb_ntutc2unixutc(LVAL(p, 16));
|
|
fattr->f_mtime = smb_ntutc2unixutc(LVAL(p, 24));
|
|
/* change time (32) */
|
|
fattr->f_size = LVAL(p, 40);
|
|
/* alloc size (48) */
|
|
fattr->attr = DVAL(p, 56);
|
|
|
|
VERBOSE("info 260 at %p, len=%d, name=%.*s\n",
|
|
p, len, len, qname->name);
|
|
break;
|
|
case SMB_FIND_FILE_UNIX:
|
|
result = p + WVAL(p, 0);
|
|
qname->name = p + 108;
|
|
|
|
len = strlen(qname->name);
|
|
/* FIXME: should we check the length?? */
|
|
|
|
p += 8;
|
|
smb_decode_unix_basic(fattr, server, p);
|
|
VERBOSE("info SMB_FIND_FILE_UNIX at %p, len=%d, name=%.*s\n",
|
|
p, len, len, qname->name);
|
|
break;
|
|
default:
|
|
PARANOIA("Unknown info level %d\n", level);
|
|
result = p + WVAL(p, 0);
|
|
goto out;
|
|
}
|
|
|
|
smb_finish_dirent(server, fattr);
|
|
|
|
#if 0
|
|
/* FIXME: These only work for ascii chars, and recent smbmount doesn't
|
|
allow the flag to be set anyway. Remove? */
|
|
switch (server->opt.case_handling) {
|
|
case SMB_CASE_UPPER:
|
|
str_upper(qname->name, len);
|
|
break;
|
|
case SMB_CASE_LOWER:
|
|
str_lower(qname->name, len);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
#endif
|
|
|
|
qname->len = 0;
|
|
n = server->ops->convert(name_buf, SMB_MAXNAMELEN,
|
|
qname->name, len,
|
|
server->remote_nls, server->local_nls);
|
|
if (n > 0) {
|
|
qname->len = n;
|
|
qname->name = name_buf;
|
|
}
|
|
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/* findfirst/findnext flags */
|
|
#define SMB_CLOSE_AFTER_FIRST (1<<0)
|
|
#define SMB_CLOSE_IF_END (1<<1)
|
|
#define SMB_REQUIRE_RESUME_KEY (1<<2)
|
|
#define SMB_CONTINUE_BIT (1<<3)
|
|
|
|
/*
|
|
* Note: samba-2.0.7 (at least) has a very similar routine, cli_list, in
|
|
* source/libsmb/clilist.c. When looking for smb bugs in the readdir code,
|
|
* go there for advise.
|
|
*
|
|
* Bugs Noted:
|
|
* (1) When using Info Level 1 Win NT 4.0 truncates directory listings
|
|
* for certain patterns of names and/or lengths. The breakage pattern
|
|
* is completely reproducible and can be toggled by the creation of a
|
|
* single file. (E.g. echo hi >foo breaks, rm -f foo works.)
|
|
*/
|
|
static int
|
|
smb_proc_readdir_long(struct file *filp, void *dirent, filldir_t filldir,
|
|
struct smb_cache_control *ctl)
|
|
{
|
|
struct dentry *dir = filp->f_path.dentry;
|
|
struct smb_sb_info *server = server_from_dentry(dir);
|
|
struct qstr qname;
|
|
struct smb_fattr fattr;
|
|
|
|
unsigned char *p, *lastname;
|
|
char *mask, *param;
|
|
__u16 command;
|
|
int first, entries_seen;
|
|
|
|
/* Both NT and OS/2 accept info level 1 (but see note below). */
|
|
int info_level = 260;
|
|
const int max_matches = 512;
|
|
|
|
unsigned int ff_searchcount = 0;
|
|
unsigned int ff_eos = 0;
|
|
unsigned int ff_lastname = 0;
|
|
unsigned int ff_dir_handle = 0;
|
|
unsigned int loop_count = 0;
|
|
unsigned int mask_len, i;
|
|
int result;
|
|
struct smb_request *req;
|
|
unsigned char *name_buf;
|
|
static struct qstr star = {
|
|
.name = "*",
|
|
.len = 1,
|
|
};
|
|
|
|
lock_kernel();
|
|
|
|
/*
|
|
* We always prefer unix style. Use info level 1 for older
|
|
* servers that don't do 260.
|
|
*/
|
|
if (server->opt.capabilities & SMB_CAP_UNIX)
|
|
info_level = SMB_FIND_FILE_UNIX;
|
|
else if (server->opt.protocol < SMB_PROTOCOL_NT1)
|
|
info_level = 1;
|
|
|
|
result = -ENOMEM;
|
|
if (! (name_buf = kmalloc(SMB_MAXNAMELEN+2, GFP_KERNEL)))
|
|
goto out;
|
|
if (! (req = smb_alloc_request(server, server->opt.max_xmit)))
|
|
goto out_name;
|
|
param = req->rq_buffer;
|
|
|
|
/*
|
|
* Encode the initial path
|
|
*/
|
|
mask = param + 12;
|
|
|
|
result = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dir, &star);
|
|
if (result <= 0)
|
|
goto out_free;
|
|
mask_len = result - 1; /* mask_len is strlen, not #bytes */
|
|
result = 0;
|
|
first = 1;
|
|
VERBOSE("starting mask_len=%d, mask=%s\n", mask_len, mask);
|
|
|
|
entries_seen = 2;
|
|
ff_eos = 0;
|
|
|
|
while (ff_eos == 0) {
|
|
loop_count += 1;
|
|
if (loop_count > 10) {
|
|
printk(KERN_WARNING "smb_proc_readdir_long: "
|
|
"Looping in FIND_NEXT??\n");
|
|
result = -EIO;
|
|
break;
|
|
}
|
|
|
|
if (first != 0) {
|
|
command = TRANSACT2_FINDFIRST;
|
|
WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
|
|
WSET(param, 2, max_matches); /* max count */
|
|
WSET(param, 4, SMB_CLOSE_IF_END);
|
|
WSET(param, 6, info_level);
|
|
DSET(param, 8, 0);
|
|
} else {
|
|
command = TRANSACT2_FINDNEXT;
|
|
|
|
VERBOSE("handle=0x%X, lastname=%d, mask=%.*s\n",
|
|
ff_dir_handle, ff_lastname, mask_len, mask);
|
|
|
|
WSET(param, 0, ff_dir_handle); /* search handle */
|
|
WSET(param, 2, max_matches); /* max count */
|
|
WSET(param, 4, info_level);
|
|
DSET(param, 6, 0);
|
|
WSET(param, 10, SMB_CONTINUE_BIT|SMB_CLOSE_IF_END);
|
|
}
|
|
|
|
req->rq_trans2_command = command;
|
|
req->rq_ldata = 0;
|
|
req->rq_data = NULL;
|
|
req->rq_lparm = 12 + mask_len + 1;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0) {
|
|
PARANOIA("error=%d, breaking\n", result);
|
|
break;
|
|
}
|
|
|
|
if (req->rq_rcls == ERRSRV && req->rq_err == ERRerror) {
|
|
/* a damn Win95 bug - sometimes it clags if you
|
|
ask it too fast */
|
|
schedule_timeout_interruptible(msecs_to_jiffies(200));
|
|
continue;
|
|
}
|
|
|
|
if (req->rq_rcls != 0) {
|
|
result = smb_errno(req);
|
|
PARANOIA("name=%s, result=%d, rcls=%d, err=%d\n",
|
|
mask, result, req->rq_rcls, req->rq_err);
|
|
break;
|
|
}
|
|
|
|
/* parse out some important return info */
|
|
if (first != 0) {
|
|
ff_dir_handle = WVAL(req->rq_parm, 0);
|
|
ff_searchcount = WVAL(req->rq_parm, 2);
|
|
ff_eos = WVAL(req->rq_parm, 4);
|
|
ff_lastname = WVAL(req->rq_parm, 8);
|
|
} else {
|
|
ff_searchcount = WVAL(req->rq_parm, 0);
|
|
ff_eos = WVAL(req->rq_parm, 2);
|
|
ff_lastname = WVAL(req->rq_parm, 6);
|
|
}
|
|
|
|
if (ff_searchcount == 0)
|
|
break;
|
|
|
|
/* Now we are ready to parse smb directory entries. */
|
|
|
|
/* point to the data bytes */
|
|
p = req->rq_data;
|
|
for (i = 0; i < ff_searchcount; i++) {
|
|
/* make sure we stay within the buffer */
|
|
if (p >= req->rq_data + req->rq_ldata) {
|
|
printk(KERN_ERR "smb_proc_readdir_long: "
|
|
"dirent pointer outside buffer! "
|
|
"%p %d@%p\n",
|
|
p, req->rq_ldata, req->rq_data);
|
|
result = -EIO; /* always a comm. error? */
|
|
goto out_free;
|
|
}
|
|
|
|
p = smb_decode_long_dirent(server, p, info_level,
|
|
&qname, &fattr, name_buf);
|
|
|
|
/* ignore . and .. from the server */
|
|
if (entries_seen == 2 && qname.name[0] == '.') {
|
|
if (qname.len == 1)
|
|
continue;
|
|
if (qname.name[1] == '.' && qname.len == 2)
|
|
continue;
|
|
}
|
|
|
|
if (!smb_fill_cache(filp, dirent, filldir, ctl,
|
|
&qname, &fattr))
|
|
; /* stop reading? */
|
|
entries_seen++;
|
|
}
|
|
|
|
VERBOSE("received %d entries, eos=%d\n", ff_searchcount,ff_eos);
|
|
|
|
/*
|
|
* We might need the lastname for continuations.
|
|
*
|
|
* Note that some servers (win95?) point to the filename and
|
|
* others (NT4, Samba using NT1) to the dir entry. We assume
|
|
* here that those who do not point to a filename do not need
|
|
* this info to continue the listing.
|
|
*
|
|
* OS/2 needs this and talks infolevel 1.
|
|
* NetApps want lastname with infolevel 260.
|
|
* win2k want lastname with infolevel 260, and points to
|
|
* the record not to the name.
|
|
* Samba+CifsUnixExt doesn't need lastname.
|
|
*
|
|
* Both are happy if we return the data they point to. So we do.
|
|
* (FIXME: above is not true with win2k)
|
|
*/
|
|
mask_len = 0;
|
|
if (info_level != SMB_FIND_FILE_UNIX &&
|
|
ff_lastname > 0 && ff_lastname < req->rq_ldata) {
|
|
lastname = req->rq_data + ff_lastname;
|
|
|
|
switch (info_level) {
|
|
case 260:
|
|
mask_len = req->rq_ldata - ff_lastname;
|
|
break;
|
|
case 1:
|
|
/* lastname points to a length byte */
|
|
mask_len = *lastname++;
|
|
if (ff_lastname + 1 + mask_len > req->rq_ldata)
|
|
mask_len = req->rq_ldata - ff_lastname - 1;
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Update the mask string for the next message.
|
|
*/
|
|
if (mask_len > 255)
|
|
mask_len = 255;
|
|
if (mask_len)
|
|
strncpy(mask, lastname, mask_len);
|
|
}
|
|
mask_len = strnlen(mask, mask_len);
|
|
VERBOSE("new mask, len=%d@%d of %d, mask=%.*s\n",
|
|
mask_len, ff_lastname, req->rq_ldata, mask_len, mask);
|
|
|
|
first = 0;
|
|
loop_count = 0;
|
|
}
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out_name:
|
|
kfree(name_buf);
|
|
out:
|
|
unlock_kernel();
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* This version uses the trans2 TRANSACT2_FINDFIRST message
|
|
* to get the attribute data.
|
|
*
|
|
* Bugs Noted:
|
|
*/
|
|
static int
|
|
smb_proc_getattr_ff(struct smb_sb_info *server, struct dentry *dentry,
|
|
struct smb_fattr *fattr)
|
|
{
|
|
char *param, *mask;
|
|
__u16 date, time;
|
|
int mask_len, result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
mask = param + 12;
|
|
|
|
mask_len = smb_encode_path(server, mask, SMB_MAXPATHLEN+1, dentry,NULL);
|
|
if (mask_len < 0) {
|
|
result = mask_len;
|
|
goto out_free;
|
|
}
|
|
VERBOSE("name=%s, len=%d\n", mask, mask_len);
|
|
WSET(param, 0, aSYSTEM | aHIDDEN | aDIR);
|
|
WSET(param, 2, 1); /* max count */
|
|
WSET(param, 4, 1); /* close after this call */
|
|
WSET(param, 6, 1); /* info_level */
|
|
DSET(param, 8, 0);
|
|
|
|
req->rq_trans2_command = TRANSACT2_FINDFIRST;
|
|
req->rq_ldata = 0;
|
|
req->rq_data = NULL;
|
|
req->rq_lparm = 12 + mask_len;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
if (req->rq_rcls != 0) {
|
|
result = smb_errno(req);
|
|
#ifdef SMBFS_PARANOIA
|
|
if (result != -ENOENT)
|
|
PARANOIA("error for %s, rcls=%d, err=%d\n",
|
|
mask, req->rq_rcls, req->rq_err);
|
|
#endif
|
|
goto out_free;
|
|
}
|
|
/* Make sure we got enough data ... */
|
|
result = -EINVAL;
|
|
if (req->rq_ldata < 22 || WVAL(req->rq_parm, 2) != 1) {
|
|
PARANOIA("bad result for %s, len=%d, count=%d\n",
|
|
mask, req->rq_ldata, WVAL(req->rq_parm, 2));
|
|
goto out_free;
|
|
}
|
|
|
|
/*
|
|
* Decode the response into the fattr ...
|
|
*/
|
|
date = WVAL(req->rq_data, 0);
|
|
time = WVAL(req->rq_data, 2);
|
|
fattr->f_ctime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_ctime.tv_nsec = 0;
|
|
|
|
date = WVAL(req->rq_data, 4);
|
|
time = WVAL(req->rq_data, 6);
|
|
fattr->f_atime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_atime.tv_nsec = 0;
|
|
|
|
date = WVAL(req->rq_data, 8);
|
|
time = WVAL(req->rq_data, 10);
|
|
fattr->f_mtime.tv_sec = date_dos2unix(server, date, time);
|
|
fattr->f_mtime.tv_nsec = 0;
|
|
VERBOSE("name=%s, date=%x, time=%x, mtime=%ld\n",
|
|
mask, date, time, fattr->f_mtime.tv_sec);
|
|
fattr->f_size = DVAL(req->rq_data, 12);
|
|
/* ULONG allocation size */
|
|
fattr->attr = WVAL(req->rq_data, 20);
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_core(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *fattr)
|
|
{
|
|
int result;
|
|
char *p;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
p = smb_setup_header(req, SMBgetatr, 0, 0);
|
|
result = smb_simple_encode_path(req, &p, dir, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
smb_setup_bcc(req, p);
|
|
|
|
if ((result = smb_request_ok(req, SMBgetatr, 10, 0)) < 0)
|
|
goto out_free;
|
|
fattr->attr = WVAL(req->rq_header, smb_vwv0);
|
|
fattr->f_mtime.tv_sec = local2utc(server, DVAL(req->rq_header, smb_vwv1));
|
|
fattr->f_mtime.tv_nsec = 0;
|
|
fattr->f_size = DVAL(req->rq_header, smb_vwv3);
|
|
fattr->f_ctime = fattr->f_mtime;
|
|
fattr->f_atime = fattr->f_mtime;
|
|
#ifdef SMBFS_DEBUG_TIMESTAMP
|
|
printk("getattr_core: %s/%s, mtime=%ld\n",
|
|
DENTRY_PATH(dir), fattr->f_mtime);
|
|
#endif
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Bugs Noted:
|
|
* (1) Win 95 swaps the date and time fields in the standard info level.
|
|
*/
|
|
static int
|
|
smb_proc_getattr_trans2(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_request *req, int infolevel)
|
|
{
|
|
char *p, *param;
|
|
int result;
|
|
|
|
param = req->rq_buffer;
|
|
WSET(param, 0, infolevel);
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
|
|
if (result < 0)
|
|
goto out;
|
|
p = param + 6 + result;
|
|
|
|
req->rq_trans2_command = TRANSACT2_QPATHINFO;
|
|
req->rq_ldata = 0;
|
|
req->rq_data = NULL;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out;
|
|
if (req->rq_rcls != 0) {
|
|
VERBOSE("for %s: result=%d, rcls=%d, err=%d\n",
|
|
¶m[6], result, req->rq_rcls, req->rq_err);
|
|
result = smb_errno(req);
|
|
goto out;
|
|
}
|
|
result = -ENOENT;
|
|
if (req->rq_ldata < 22) {
|
|
PARANOIA("not enough data for %s, len=%d\n",
|
|
¶m[6], req->rq_ldata);
|
|
goto out;
|
|
}
|
|
|
|
result = 0;
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_trans2_std(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *attr)
|
|
{
|
|
u16 date, time;
|
|
int off_date = 0, off_time = 2;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
result = smb_proc_getattr_trans2(server, dir, req, SMB_INFO_STANDARD);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
/*
|
|
* Kludge alert: Win 95 swaps the date and time field,
|
|
* contrary to the CIFS docs and Win NT practice.
|
|
*/
|
|
if (server->mnt->flags & SMB_MOUNT_WIN95) {
|
|
off_date = 2;
|
|
off_time = 0;
|
|
}
|
|
date = WVAL(req->rq_data, off_date);
|
|
time = WVAL(req->rq_data, off_time);
|
|
attr->f_ctime.tv_sec = date_dos2unix(server, date, time);
|
|
attr->f_ctime.tv_nsec = 0;
|
|
|
|
date = WVAL(req->rq_data, 4 + off_date);
|
|
time = WVAL(req->rq_data, 4 + off_time);
|
|
attr->f_atime.tv_sec = date_dos2unix(server, date, time);
|
|
attr->f_atime.tv_nsec = 0;
|
|
|
|
date = WVAL(req->rq_data, 8 + off_date);
|
|
time = WVAL(req->rq_data, 8 + off_time);
|
|
attr->f_mtime.tv_sec = date_dos2unix(server, date, time);
|
|
attr->f_mtime.tv_nsec = 0;
|
|
#ifdef SMBFS_DEBUG_TIMESTAMP
|
|
printk(KERN_DEBUG "getattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
|
|
DENTRY_PATH(dir), date, time, attr->f_mtime);
|
|
#endif
|
|
attr->f_size = DVAL(req->rq_data, 12);
|
|
attr->attr = WVAL(req->rq_data, 20);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_trans2_all(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *attr)
|
|
{
|
|
struct smb_request *req;
|
|
int result;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
result = smb_proc_getattr_trans2(server, dir, req,
|
|
SMB_QUERY_FILE_ALL_INFO);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
attr->f_ctime = smb_ntutc2unixutc(LVAL(req->rq_data, 0));
|
|
attr->f_atime = smb_ntutc2unixutc(LVAL(req->rq_data, 8));
|
|
attr->f_mtime = smb_ntutc2unixutc(LVAL(req->rq_data, 16));
|
|
/* change (24) */
|
|
attr->attr = WVAL(req->rq_data, 32);
|
|
/* pad? (34) */
|
|
/* allocated size (40) */
|
|
attr->f_size = LVAL(req->rq_data, 48);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_unix(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *attr)
|
|
{
|
|
struct smb_request *req;
|
|
int result;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
result = smb_proc_getattr_trans2(server, dir, req,
|
|
SMB_QUERY_FILE_UNIX_BASIC);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
smb_decode_unix_basic(attr, server, req->rq_data);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_95(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *attr)
|
|
{
|
|
struct inode *inode = dir->d_inode;
|
|
int result;
|
|
|
|
/* FIXME: why not use the "all" version? */
|
|
result = smb_proc_getattr_trans2_std(server, dir, attr);
|
|
if (result < 0)
|
|
goto out;
|
|
|
|
/*
|
|
* None of the getattr versions here can make win9x return the right
|
|
* filesize if there are changes made to an open file.
|
|
* A seek-to-end does return the right size, but we only need to do
|
|
* that on files we have written.
|
|
*/
|
|
if (inode && SMB_I(inode)->flags & SMB_F_LOCALWRITE &&
|
|
smb_is_open(inode))
|
|
{
|
|
__u16 fileid = SMB_I(inode)->fileid;
|
|
attr->f_size = smb_proc_seek(server, fileid, 2, 0);
|
|
}
|
|
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_ops_wait(struct smb_sb_info *server)
|
|
{
|
|
int result;
|
|
|
|
result = wait_event_interruptible_timeout(server->conn_wq,
|
|
server->conn_complete, 30*HZ);
|
|
|
|
if (!result || signal_pending(current))
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
smb_proc_getattr_null(struct smb_sb_info *server, struct dentry *dir,
|
|
struct smb_fattr *fattr)
|
|
{
|
|
int result;
|
|
|
|
if (smb_proc_ops_wait(server) < 0)
|
|
return -EIO;
|
|
|
|
smb_init_dirent(server, fattr);
|
|
result = server->ops->getattr(server, dir, fattr);
|
|
smb_finish_dirent(server, fattr);
|
|
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_readdir_null(struct file *filp, void *dirent, filldir_t filldir,
|
|
struct smb_cache_control *ctl)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(filp->f_path.dentry);
|
|
|
|
if (smb_proc_ops_wait(server) < 0)
|
|
return -EIO;
|
|
|
|
return server->ops->readdir(filp, dirent, filldir, ctl);
|
|
}
|
|
|
|
int
|
|
smb_proc_getattr(struct dentry *dir, struct smb_fattr *fattr)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dir);
|
|
int result;
|
|
|
|
smb_init_dirent(server, fattr);
|
|
result = server->ops->getattr(server, dir, fattr);
|
|
smb_finish_dirent(server, fattr);
|
|
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* Because of bugs in the core protocol, we use this only to set
|
|
* attributes. See smb_proc_settime() below for timestamp handling.
|
|
*
|
|
* Bugs Noted:
|
|
* (1) If mtime is non-zero, both Win 3.1 and Win 95 fail
|
|
* with an undocumented error (ERRDOS code 50). Setting
|
|
* mtime to 0 allows the attributes to be set.
|
|
* (2) The extra parameters following the name string aren't
|
|
* in the CIFS docs, but seem to be necessary for operation.
|
|
*/
|
|
static int
|
|
smb_proc_setattr_core(struct smb_sb_info *server, struct dentry *dentry,
|
|
__u16 attr)
|
|
{
|
|
char *p;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
|
|
p = smb_setup_header(req, SMBsetatr, 8, 0);
|
|
WSET(req->rq_header, smb_vwv0, attr);
|
|
DSET(req->rq_header, smb_vwv1, 0); /* mtime */
|
|
WSET(req->rq_header, smb_vwv3, 0); /* reserved values */
|
|
WSET(req->rq_header, smb_vwv4, 0);
|
|
WSET(req->rq_header, smb_vwv5, 0);
|
|
WSET(req->rq_header, smb_vwv6, 0);
|
|
WSET(req->rq_header, smb_vwv7, 0);
|
|
result = smb_simple_encode_path(req, &p, dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
if (p + 2 > (char *)req->rq_buffer + req->rq_bufsize) {
|
|
result = -ENAMETOOLONG;
|
|
goto out_free;
|
|
}
|
|
*p++ = 4;
|
|
*p++ = 0;
|
|
smb_setup_bcc(req, p);
|
|
|
|
result = smb_request_ok(req, SMBsetatr, 0, 0);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Because of bugs in the trans2 setattr messages, we must set
|
|
* attributes and timestamps separately. The core SMBsetatr
|
|
* message seems to be the only reliable way to set attributes.
|
|
*/
|
|
int
|
|
smb_proc_setattr(struct dentry *dir, struct smb_fattr *fattr)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dir);
|
|
int result;
|
|
|
|
VERBOSE("setting %s/%s, open=%d\n",
|
|
DENTRY_PATH(dir), smb_is_open(dir->d_inode));
|
|
result = smb_proc_setattr_core(server, dir, fattr->attr);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Sets the timestamps for an file open with write permissions.
|
|
*/
|
|
static int
|
|
smb_proc_setattr_ext(struct smb_sb_info *server,
|
|
struct inode *inode, struct smb_fattr *fattr)
|
|
{
|
|
__u16 date, time;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBsetattrE, 7, 0);
|
|
WSET(req->rq_header, smb_vwv0, SMB_I(inode)->fileid);
|
|
/* We don't change the creation time */
|
|
WSET(req->rq_header, smb_vwv1, 0);
|
|
WSET(req->rq_header, smb_vwv2, 0);
|
|
date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
|
|
WSET(req->rq_header, smb_vwv3, date);
|
|
WSET(req->rq_header, smb_vwv4, time);
|
|
date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
|
|
WSET(req->rq_header, smb_vwv5, date);
|
|
WSET(req->rq_header, smb_vwv6, time);
|
|
#ifdef SMBFS_DEBUG_TIMESTAMP
|
|
printk(KERN_DEBUG "smb_proc_setattr_ext: date=%d, time=%d, mtime=%ld\n",
|
|
date, time, fattr->f_mtime);
|
|
#endif
|
|
|
|
req->rq_flags |= SMB_REQ_NORETRY;
|
|
result = smb_request_ok(req, SMBsetattrE, 0, 0);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = 0;
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Bugs Noted:
|
|
* (1) The TRANSACT2_SETPATHINFO message under Win NT 4.0 doesn't
|
|
* set the file's attribute flags.
|
|
*/
|
|
static int
|
|
smb_proc_setattr_trans2(struct smb_sb_info *server,
|
|
struct dentry *dir, struct smb_fattr *fattr)
|
|
{
|
|
__u16 date, time;
|
|
char *p, *param;
|
|
int result;
|
|
char data[26];
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
|
|
WSET(param, 0, 1); /* Info level SMB_INFO_STANDARD */
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, dir, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
p = param + 6 + result;
|
|
|
|
WSET(data, 0, 0); /* creation time */
|
|
WSET(data, 2, 0);
|
|
date_unix2dos(server, fattr->f_atime.tv_sec, &date, &time);
|
|
WSET(data, 4, date);
|
|
WSET(data, 6, time);
|
|
date_unix2dos(server, fattr->f_mtime.tv_sec, &date, &time);
|
|
WSET(data, 8, date);
|
|
WSET(data, 10, time);
|
|
#ifdef SMBFS_DEBUG_TIMESTAMP
|
|
printk(KERN_DEBUG "setattr_trans2: %s/%s, date=%x, time=%x, mtime=%ld\n",
|
|
DENTRY_PATH(dir), date, time, fattr->f_mtime);
|
|
#endif
|
|
DSET(data, 12, 0); /* size */
|
|
DSET(data, 16, 0); /* blksize */
|
|
WSET(data, 20, 0); /* attr */
|
|
DSET(data, 22, 0); /* ULONG EA size */
|
|
|
|
req->rq_trans2_command = TRANSACT2_SETPATHINFO;
|
|
req->rq_ldata = 26;
|
|
req->rq_data = data;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
result = 0;
|
|
if (req->rq_rcls != 0)
|
|
result = smb_errno(req);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* ATTR_MODE 0x001
|
|
* ATTR_UID 0x002
|
|
* ATTR_GID 0x004
|
|
* ATTR_SIZE 0x008
|
|
* ATTR_ATIME 0x010
|
|
* ATTR_MTIME 0x020
|
|
* ATTR_CTIME 0x040
|
|
* ATTR_ATIME_SET 0x080
|
|
* ATTR_MTIME_SET 0x100
|
|
* ATTR_FORCE 0x200
|
|
* ATTR_ATTR_FLAG 0x400
|
|
*
|
|
* major/minor should only be set by mknod.
|
|
*/
|
|
int
|
|
smb_proc_setattr_unix(struct dentry *d, struct iattr *attr,
|
|
unsigned int major, unsigned int minor)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(d);
|
|
u64 nttime;
|
|
char *p, *param;
|
|
int result;
|
|
char data[100];
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
|
|
DEBUG1("valid flags = 0x%04x\n", attr->ia_valid);
|
|
|
|
WSET(param, 0, SMB_SET_FILE_UNIX_BASIC);
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
p = param + 6 + result;
|
|
|
|
/* 0 L file size in bytes */
|
|
/* 8 L file size on disk in bytes (block count) */
|
|
/* 40 L uid */
|
|
/* 48 L gid */
|
|
/* 56 W file type enum */
|
|
/* 60 L devmajor */
|
|
/* 68 L devminor */
|
|
/* 76 L unique ID (inode) */
|
|
/* 84 L permissions */
|
|
/* 92 L link count */
|
|
LSET(data, 0, SMB_SIZE_NO_CHANGE);
|
|
LSET(data, 8, SMB_SIZE_NO_CHANGE);
|
|
LSET(data, 16, SMB_TIME_NO_CHANGE);
|
|
LSET(data, 24, SMB_TIME_NO_CHANGE);
|
|
LSET(data, 32, SMB_TIME_NO_CHANGE);
|
|
LSET(data, 40, SMB_UID_NO_CHANGE);
|
|
LSET(data, 48, SMB_GID_NO_CHANGE);
|
|
DSET(data, 56, smb_filetype_from_mode(attr->ia_mode));
|
|
LSET(data, 60, major);
|
|
LSET(data, 68, minor);
|
|
LSET(data, 76, 0);
|
|
LSET(data, 84, SMB_MODE_NO_CHANGE);
|
|
LSET(data, 92, 0);
|
|
|
|
if (attr->ia_valid & ATTR_SIZE) {
|
|
LSET(data, 0, attr->ia_size);
|
|
LSET(data, 8, 0); /* can't set anyway */
|
|
}
|
|
|
|
/*
|
|
* FIXME: check the conversion function it the correct one
|
|
*
|
|
* we can't set ctime but we might as well pass this to the server
|
|
* and let it ignore it.
|
|
*/
|
|
if (attr->ia_valid & ATTR_CTIME) {
|
|
nttime = smb_unixutc2ntutc(attr->ia_ctime);
|
|
LSET(data, 16, nttime);
|
|
}
|
|
if (attr->ia_valid & ATTR_ATIME) {
|
|
nttime = smb_unixutc2ntutc(attr->ia_atime);
|
|
LSET(data, 24, nttime);
|
|
}
|
|
if (attr->ia_valid & ATTR_MTIME) {
|
|
nttime = smb_unixutc2ntutc(attr->ia_mtime);
|
|
LSET(data, 32, nttime);
|
|
}
|
|
|
|
if (attr->ia_valid & ATTR_UID) {
|
|
LSET(data, 40, attr->ia_uid);
|
|
}
|
|
if (attr->ia_valid & ATTR_GID) {
|
|
LSET(data, 48, attr->ia_gid);
|
|
}
|
|
|
|
if (attr->ia_valid & ATTR_MODE) {
|
|
LSET(data, 84, attr->ia_mode);
|
|
}
|
|
|
|
req->rq_trans2_command = TRANSACT2_SETPATHINFO;
|
|
req->rq_ldata = 100;
|
|
req->rq_data = data;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* Set the modify and access timestamps for a file.
|
|
*
|
|
* Incredibly enough, in all of SMB there is no message to allow
|
|
* setting both attributes and timestamps at once.
|
|
*
|
|
* Bugs Noted:
|
|
* (1) Win 95 doesn't support the TRANSACT2_SETFILEINFO message
|
|
* with info level 1 (INFO_STANDARD).
|
|
* (2) Win 95 seems not to support setting directory timestamps.
|
|
* (3) Under the core protocol apparently the only way to set the
|
|
* timestamp is to open and close the file.
|
|
*/
|
|
int
|
|
smb_proc_settime(struct dentry *dentry, struct smb_fattr *fattr)
|
|
{
|
|
struct smb_sb_info *server = server_from_dentry(dentry);
|
|
struct inode *inode = dentry->d_inode;
|
|
int result;
|
|
|
|
VERBOSE("setting %s/%s, open=%d\n",
|
|
DENTRY_PATH(dentry), smb_is_open(inode));
|
|
|
|
/* setting the time on a Win95 server fails (tridge) */
|
|
if (server->opt.protocol >= SMB_PROTOCOL_LANMAN2 &&
|
|
!(server->mnt->flags & SMB_MOUNT_WIN95)) {
|
|
if (smb_is_open(inode) && SMB_I(inode)->access != SMB_O_RDONLY)
|
|
result = smb_proc_setattr_ext(server, inode, fattr);
|
|
else
|
|
result = smb_proc_setattr_trans2(server, dentry, fattr);
|
|
} else {
|
|
/*
|
|
* Fail silently on directories ... timestamp can't be set?
|
|
*/
|
|
result = 0;
|
|
if (S_ISREG(inode->i_mode)) {
|
|
/*
|
|
* Set the mtime by opening and closing the file.
|
|
* Note that the file is opened read-only, but this
|
|
* still allows us to set the date (tridge)
|
|
*/
|
|
result = -EACCES;
|
|
if (!smb_is_open(inode))
|
|
smb_proc_open(server, dentry, SMB_O_RDONLY);
|
|
if (smb_is_open(inode)) {
|
|
inode->i_mtime = fattr->f_mtime;
|
|
result = smb_proc_close_inode(server, inode);
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_dskattr(struct dentry *dentry, struct kstatfs *attr)
|
|
{
|
|
struct smb_sb_info *server = SMB_SB(dentry->d_sb);
|
|
int result;
|
|
char *p;
|
|
long unit;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 0)))
|
|
goto out;
|
|
|
|
smb_setup_header(req, SMBdskattr, 0, 0);
|
|
if ((result = smb_request_ok(req, SMBdskattr, 5, 0)) < 0)
|
|
goto out_free;
|
|
p = SMB_VWV(req->rq_header);
|
|
unit = (WVAL(p, 2) * WVAL(p, 4)) >> SMB_ST_BLKSHIFT;
|
|
attr->f_blocks = WVAL(p, 0) * unit;
|
|
attr->f_bsize = SMB_ST_BLKSIZE;
|
|
attr->f_bavail = attr->f_bfree = WVAL(p, 6) * unit;
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
int
|
|
smb_proc_read_link(struct smb_sb_info *server, struct dentry *d,
|
|
char *buffer, int len)
|
|
{
|
|
char *p, *param;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
DEBUG1("readlink of %s/%s\n", DENTRY_PATH(d));
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
|
|
WSET(param, 0, SMB_QUERY_FILE_UNIX_LINK);
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param+6, SMB_MAXPATHLEN+1, d, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
p = param + 6 + result;
|
|
|
|
req->rq_trans2_command = TRANSACT2_QPATHINFO;
|
|
req->rq_ldata = 0;
|
|
req->rq_data = NULL;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
|
|
¶m[6], result, req->rq_rcls, req->rq_err);
|
|
|
|
/* copy data up to the \0 or buffer length */
|
|
result = len;
|
|
if (req->rq_ldata < len)
|
|
result = req->rq_ldata;
|
|
strncpy(buffer, req->rq_data, result);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
|
|
/*
|
|
* Create a symlink object called dentry which points to oldpath.
|
|
* Samba does not permit dangling links but returns a suitable error message.
|
|
*/
|
|
int
|
|
smb_proc_symlink(struct smb_sb_info *server, struct dentry *d,
|
|
const char *oldpath)
|
|
{
|
|
char *p, *param;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
|
|
WSET(param, 0, SMB_SET_FILE_UNIX_LINK);
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1, d, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
p = param + 6 + result;
|
|
|
|
req->rq_trans2_command = TRANSACT2_SETPATHINFO;
|
|
req->rq_ldata = strlen(oldpath) + 1;
|
|
req->rq_data = (char *) oldpath;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
|
|
¶m[6], result, req->rq_rcls, req->rq_err);
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Create a hard link object called new_dentry which points to dentry.
|
|
*/
|
|
int
|
|
smb_proc_link(struct smb_sb_info *server, struct dentry *dentry,
|
|
struct dentry *new_dentry)
|
|
{
|
|
char *p, *param;
|
|
int result;
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, PAGE_SIZE)))
|
|
goto out;
|
|
param = req->rq_buffer;
|
|
|
|
WSET(param, 0, SMB_SET_FILE_UNIX_HLINK);
|
|
DSET(param, 2, 0);
|
|
result = smb_encode_path(server, param + 6, SMB_MAXPATHLEN+1,
|
|
new_dentry, NULL);
|
|
if (result < 0)
|
|
goto out_free;
|
|
p = param + 6 + result;
|
|
|
|
/* Grr, pointless separation of parameters and data ... */
|
|
req->rq_data = p;
|
|
req->rq_ldata = smb_encode_path(server, p, SMB_MAXPATHLEN+1,
|
|
dentry, NULL);
|
|
|
|
req->rq_trans2_command = TRANSACT2_SETPATHINFO;
|
|
req->rq_lparm = p - param;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
DEBUG1("for %s: result=%d, rcls=%d, err=%d\n",
|
|
¶m[6], result, req->rq_rcls, req->rq_err);
|
|
result = 0;
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
smb_proc_query_cifsunix(struct smb_sb_info *server)
|
|
{
|
|
int result;
|
|
int major, minor;
|
|
u64 caps;
|
|
char param[2];
|
|
struct smb_request *req;
|
|
|
|
result = -ENOMEM;
|
|
if (! (req = smb_alloc_request(server, 100)))
|
|
goto out;
|
|
|
|
WSET(param, 0, SMB_QUERY_CIFS_UNIX_INFO);
|
|
|
|
req->rq_trans2_command = TRANSACT2_QFSINFO;
|
|
req->rq_ldata = 0;
|
|
req->rq_data = NULL;
|
|
req->rq_lparm = 2;
|
|
req->rq_parm = param;
|
|
req->rq_flags = 0;
|
|
result = smb_add_request(req);
|
|
if (result < 0)
|
|
goto out_free;
|
|
|
|
if (req->rq_ldata < 12) {
|
|
PARANOIA("Not enough data\n");
|
|
goto out_free;
|
|
}
|
|
major = WVAL(req->rq_data, 0);
|
|
minor = WVAL(req->rq_data, 2);
|
|
|
|
DEBUG1("Server implements CIFS Extensions for UNIX systems v%d.%d\n",
|
|
major, minor);
|
|
/* FIXME: verify that we are ok with this major/minor? */
|
|
|
|
caps = LVAL(req->rq_data, 4);
|
|
DEBUG1("Server capabilities 0x%016llx\n", caps);
|
|
|
|
out_free:
|
|
smb_rput(req);
|
|
out:
|
|
return result;
|
|
}
|
|
|
|
|
|
static void
|
|
install_ops(struct smb_ops *dst, struct smb_ops *src)
|
|
{
|
|
memcpy(dst, src, sizeof(void *) * SMB_OPS_NUM_STATIC);
|
|
}
|
|
|
|
/* < LANMAN2 */
|
|
static struct smb_ops smb_ops_core =
|
|
{
|
|
.read = smb_proc_read,
|
|
.write = smb_proc_write,
|
|
.readdir = smb_proc_readdir_short,
|
|
.getattr = smb_proc_getattr_core,
|
|
.truncate = smb_proc_trunc32,
|
|
};
|
|
|
|
/* LANMAN2, OS/2, others? */
|
|
static struct smb_ops smb_ops_os2 =
|
|
{
|
|
.read = smb_proc_read,
|
|
.write = smb_proc_write,
|
|
.readdir = smb_proc_readdir_long,
|
|
.getattr = smb_proc_getattr_trans2_std,
|
|
.truncate = smb_proc_trunc32,
|
|
};
|
|
|
|
/* Win95, and possibly some NetApp versions too */
|
|
static struct smb_ops smb_ops_win95 =
|
|
{
|
|
.read = smb_proc_read, /* does not support 12word readX */
|
|
.write = smb_proc_write,
|
|
.readdir = smb_proc_readdir_long,
|
|
.getattr = smb_proc_getattr_95,
|
|
.truncate = smb_proc_trunc95,
|
|
};
|
|
|
|
/* Samba, NT4 and NT5 */
|
|
static struct smb_ops smb_ops_winNT =
|
|
{
|
|
.read = smb_proc_readX,
|
|
.write = smb_proc_writeX,
|
|
.readdir = smb_proc_readdir_long,
|
|
.getattr = smb_proc_getattr_trans2_all,
|
|
.truncate = smb_proc_trunc64,
|
|
};
|
|
|
|
/* Samba w/ unix extensions. Others? */
|
|
static struct smb_ops smb_ops_unix =
|
|
{
|
|
.read = smb_proc_readX,
|
|
.write = smb_proc_writeX,
|
|
.readdir = smb_proc_readdir_long,
|
|
.getattr = smb_proc_getattr_unix,
|
|
/* FIXME: core/ext/time setattr needs to be cleaned up! */
|
|
/* .setattr = smb_proc_setattr_unix, */
|
|
.truncate = smb_proc_trunc64,
|
|
};
|
|
|
|
/* Place holder until real ops are in place */
|
|
static struct smb_ops smb_ops_null =
|
|
{
|
|
.readdir = smb_proc_readdir_null,
|
|
.getattr = smb_proc_getattr_null,
|
|
};
|
|
|
|
void smb_install_null_ops(struct smb_ops *ops)
|
|
{
|
|
install_ops(ops, &smb_ops_null);
|
|
}
|