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-rw-r--r--fs/cifs/cifs_dfs_ref.c36
-rw-r--r--fs/cifs/cifsproto.h3
2 files changed, 19 insertions, 20 deletions
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 85c0a74d034d..5fdbf8a14472 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -104,9 +104,9 @@ static char *cifs_get_share_name(const char *node_name)
/**
- * compose_mount_options - creates mount options for refferral
+ * cifs_compose_mount_options - creates mount options for refferral
* @sb_mountdata: parent/root DFS mount options (template)
- * @dentry: point where we are going to mount
+ * @fullpath: full path in UNC format
* @ref: server's referral
* @devname: pointer for saving device name
*
@@ -116,8 +116,8 @@ static char *cifs_get_share_name(const char *node_name)
* Returns: pointer to new mount options or ERR_PTR.
* Caller is responcible for freeing retunrned value if it is not error.
*/
-static char *compose_mount_options(const char *sb_mountdata,
- struct dentry *dentry,
+char *cifs_compose_mount_options(const char *sb_mountdata,
+ const char *fullpath,
const struct dfs_info3_param *ref,
char **devname)
{
@@ -128,7 +128,6 @@ static char *compose_mount_options(const char *sb_mountdata,
char *srvIP = NULL;
char sep = ',';
int off, noff;
- char *fullpath;
if (sb_mountdata == NULL)
return ERR_PTR(-EINVAL);
@@ -202,17 +201,6 @@ static char *compose_mount_options(const char *sb_mountdata,
goto compose_mount_options_err;
}
- /*
- * this function gives us a path with a double backslash prefix. We
- * require a single backslash for DFS. Temporarily increment fullpath
- * to put it in the proper form and decrement before freeing it.
- */
- fullpath = build_path_from_dentry(dentry);
- if (!fullpath) {
- rc = -ENOMEM;
- goto compose_mount_options_err;
- }
- ++fullpath;
tkn_e = strchr(tkn_e + 1, '\\');
if (tkn_e || (strlen(fullpath) - ref->path_consumed)) {
strncat(mountdata, &sep, 1);
@@ -221,8 +209,6 @@ static char *compose_mount_options(const char *sb_mountdata,
strcat(mountdata, tkn_e + 1);
strcat(mountdata, fullpath + ref->path_consumed);
}
- --fullpath;
- kfree(fullpath);
/*cFYI(1,("%s: parent mountdata: %s", __func__,sb_mountdata));*/
/*cFYI(1, ("%s: submount mountdata: %s", __func__, mountdata ));*/
@@ -245,10 +231,20 @@ static struct vfsmount *cifs_dfs_do_refmount(const struct vfsmount *mnt_parent,
struct vfsmount *mnt;
char *mountdata;
char *devname = NULL;
+ char *fullpath;
cifs_sb = CIFS_SB(dentry->d_inode->i_sb);
- mountdata = compose_mount_options(cifs_sb->mountdata,
- dentry, ref, &devname);
+ /*
+ * this function gives us a path with a double backslash prefix. We
+ * require a single backslash for DFS.
+ */
+ fullpath = build_path_from_dentry(dentry);
+ if (!fullpath)
+ return ERR_PTR(-ENOMEM);
+
+ mountdata = cifs_compose_mount_options(cifs_sb->mountdata,
+ fullpath + 1, ref, &devname);
+ kfree(fullpath);
if (IS_ERR(mountdata))
return (struct vfsmount *)mountdata;
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index a069e7bfd2d0..4167716d32f2 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -44,6 +44,9 @@ extern void _FreeXid(unsigned int);
extern char *build_path_from_dentry(struct dentry *);
extern char *cifs_build_path_to_root(struct cifs_sb_info *cifs_sb);
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,
+ char **devname);
/* extern void renew_parental_timestamps(struct dentry *direntry);*/
extern int SendReceive(const unsigned int /* xid */ , struct cifsSesInfo *,
struct smb_hdr * /* input */ ,