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CIFS: Make use of common cifs_build_path_to_root for CIFS and SMB2

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because the is no difference here. This also adds support of prefixpath
mount option for SMB2.

Signed-off-by: Pavel Shilovsky <piastry@etersoft.ru>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Steve French 2012-11-28 22:34:41 -06:00
parent e5e69abd05
commit 6d3ea7e497
7 changed files with 44 additions and 68 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
fs/cifs/cifsfs.c
View File

@ -539,8 +539,8 @@ cifs_get_root(struct smb_vol *vol, struct super_block *sb)
char *s, *p;
char sep;
full_path = build_path_to_root(vol, cifs_sb,
cifs_sb_master_tcon(cifs_sb));
full_path = cifs_build_path_to_root(vol, cifs_sb,
cifs_sb_master_tcon(cifs_sb));
if (full_path == NULL)
return ERR_PTR(-ENOMEM);

12
fs/cifs/cifsglob.h
View File

@ -280,9 +280,6 @@ struct smb_version_operations {
/* set attributes */
int (*set_file_info)(struct inode *, const char *, FILE_BASIC_INFO *,
const unsigned int);
/* build a full path to the root of the mount */
char * (*build_path_to_root)(struct smb_vol *, struct cifs_sb_info *,
struct cifs_tcon *);
/* check if we can send an echo or nor */
bool (*can_echo)(struct TCP_Server_Info *);
/* send echo request */
@ -1084,15 +1081,6 @@ convert_delimiter(char *path, char delim)
}
}
static inline char *
build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
struct cifs_tcon *tcon)
{
if (!vol->ops->build_path_to_root)
return NULL;
return vol->ops->build_path_to_root(vol, cifs_sb, tcon);
}
#ifdef CONFIG_CIFS_STATS
#define cifs_stats_inc atomic_inc

3
fs/cifs/cifsproto.h
View File

@ -60,6 +60,9 @@ extern int init_cifs_idmap(void);
extern void exit_cifs_idmap(void);
extern void cifs_destroy_idmaptrees(void);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct smb_vol *vol,
struct cifs_sb_info *cifs_sb,
struct cifs_tcon *tcon);
extern char *build_wildcard_path_from_dentry(struct dentry *direntry);
extern char *cifs_compose_mount_options(const char *sb_mountdata,
const char *fullpath, const struct dfs_info3_param *ref,

12
fs/cifs/connect.c
View File

@ -3261,8 +3261,10 @@ cifs_cleanup_volume_info(struct smb_vol *volume_info)
#ifdef CONFIG_CIFS_DFS_UPCALL
/* build_path_to_root returns full path to root when
* we do not have an exiting connection (tcon) */
/*
* cifs_build_path_to_root returns full path to root when we do not have an
* exiting connection (tcon)
*/
static char *
build_unc_path_to_root(const struct smb_vol *vol,
const struct cifs_sb_info *cifs_sb)
@ -3518,8 +3520,10 @@ remote_path_check:
rc = -ENOSYS;
goto mount_fail_check;
}
/* build_path_to_root works only when we have a valid tcon */
full_path = build_path_to_root(volume_info, cifs_sb, tcon);
/*
* cifs_build_path_to_root works only when we have a valid tcon
*/
full_path = cifs_build_path_to_root(volume_info, cifs_sb, tcon);
if (full_path == NULL) {
rc = -ENOMEM;
goto mount_fail_check;

31
fs/cifs/dir.c
View File

@ -44,6 +44,37 @@ renew_parental_timestamps(struct dentry *direntry)
} while (!IS_ROOT(direntry));
}
char *
cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
struct cifs_tcon *tcon)
{
int pplen = vol->prepath ? strlen(vol->prepath) : 0;
int dfsplen;
char *full_path = NULL;
/* if no prefix path, simply set path to the root of share to "" */
if (pplen == 0) {
full_path = kzalloc(1, GFP_KERNEL);
return full_path;
}
if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
if (full_path == NULL)
return full_path;
if (dfsplen)
strncpy(full_path, tcon->treeName, dfsplen);
strncpy(full_path + dfsplen, vol->prepath, pplen);
convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
full_path[dfsplen + pplen] = 0; /* add trailing null */
return full_path;
}
/* Note: caller must free return buffer */
char *
build_path_from_dentry(struct dentry *direntry)

32
fs/cifs/smb1ops.c
View File

@ -575,37 +575,6 @@ cifs_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
return CIFSSMBQFileInfo(xid, tcon, fid->netfid, data);
}
static char *
cifs_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
struct cifs_tcon *tcon)
{
int pplen = vol->prepath ? strlen(vol->prepath) : 0;
int dfsplen;
char *full_path = NULL;
/* if no prefix path, simply set path to the root of share to "" */
if (pplen == 0) {
full_path = kzalloc(1, GFP_KERNEL);
return full_path;
}
if (tcon->Flags & SMB_SHARE_IS_IN_DFS)
dfsplen = strnlen(tcon->treeName, MAX_TREE_SIZE + 1);
else
dfsplen = 0;
full_path = kmalloc(dfsplen + pplen + 1, GFP_KERNEL);
if (full_path == NULL)
return full_path;
if (dfsplen)
strncpy(full_path, tcon->treeName, dfsplen);
strncpy(full_path + dfsplen, vol->prepath, pplen);
convert_delimiter(full_path, CIFS_DIR_SEP(cifs_sb));
full_path[dfsplen + pplen] = 0; /* add trailing null */
return full_path;
}
static void
cifs_clear_stats(struct cifs_tcon *tcon)
{
@ -943,7 +912,6 @@ struct smb_version_operations smb1_operations = {
.set_path_size = CIFSSMBSetEOF,
.set_file_size = CIFSSMBSetFileSize,
.set_file_info = smb_set_file_info,
.build_path_to_root = cifs_build_path_to_root,
.echo = CIFSSMBEcho,
.mkdir = CIFSSMBMkDir,
.mkdir_setinfo = cifs_mkdir_setinfo,

18
fs/cifs/smb2ops.c
View File

@ -262,23 +262,6 @@ smb2_query_file_info(const unsigned int xid, struct cifs_tcon *tcon,
return rc;
}
static char *
smb2_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
struct cifs_tcon *tcon)
{
int pplen = vol->prepath ? strlen(vol->prepath) : 0;
char *full_path = NULL;
/* if no prefix path, simply set path to the root of share to "" */
if (pplen == 0) {
full_path = kzalloc(2, GFP_KERNEL);
return full_path;
}
cERROR(1, "prefixpath is not supported for SMB2 now");
return NULL;
}
static bool
smb2_can_echo(struct TCP_Server_Info *server)
{
@ -613,7 +596,6 @@ struct smb_version_operations smb21_operations = {
.set_path_size = smb2_set_path_size,
.set_file_size = smb2_set_file_size,
.set_file_info = smb2_set_file_info,
.build_path_to_root = smb2_build_path_to_root,
.mkdir = smb2_mkdir,
.mkdir_setinfo = smb2_mkdir_setinfo,
.rmdir = smb2_rmdir,