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authorStefan Metzmacher <metze@samba.org>2010-08-05 21:19:56 +0200
committerSteve French <sfrench@us.ibm.com>2010-09-29 19:04:31 +0000
commit1b12b9c15b4371d83b729b8fc18c670e78a1479b (patch)
treef82c9b0d01cdc5e64765780403f460e9e0d8496b /fs/cifs/link.c
parent8713d01db8bf948eb9632726f529ec4f821bb025 (diff)
downloadop-kernel-dev-1b12b9c15b4371d83b729b8fc18c670e78a1479b.zip
op-kernel-dev-1b12b9c15b4371d83b729b8fc18c670e78a1479b.tar.gz
cifs: use Minshall+French symlink functions
If configured, Minshall+French Symlinks are used against all servers. If the server supports UNIX Extensions, we still create Minshall+French Symlinks on write, but on read we fallback to UNIX Extension symlinks. Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: Steve French <sfrench@us.ibm.com>
Diffstat (limited to 'fs/cifs/link.c')
-rw-r--r--fs/cifs/link.c27
1 files changed, 23 insertions, 4 deletions
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 1b2a8c9..cbf7b11 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -407,7 +407,8 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
* but there doesn't seem to be any harm in allowing the client to
* read them.
*/
- if (!(tcon->ses->capabilities & CAP_UNIX)) {
+ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+ && !(tcon->ses->capabilities & CAP_UNIX)) {
rc = -EACCES;
goto out;
}
@@ -418,8 +419,21 @@ cifs_follow_link(struct dentry *direntry, struct nameidata *nd)
cFYI(1, "Full path: %s inode = 0x%p", full_path, inode);
- rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
- cifs_sb->local_nls);
+ rc = -EACCES;
+ /*
+ * First try Minshall+French Symlinks, if configured
+ * and fallback to UNIX Extensions Symlinks.
+ */
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+ rc = CIFSQueryMFSymLink(xid, tcon, full_path, &target_path,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+
+ if ((rc != 0) && (tcon->ses->capabilities & CAP_UNIX))
+ rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
+ cifs_sb->local_nls);
+
kfree(full_path);
out:
if (rc != 0) {
@@ -459,7 +473,12 @@ cifs_symlink(struct inode *inode, struct dentry *direntry, const char *symname)
cFYI(1, "symname is %s", symname);
/* BB what if DFS and this volume is on different share? BB */
- if (pTcon->unix_ext)
+ if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
+ rc = CIFSCreateMFSymLink(xid, pTcon, full_path, symname,
+ cifs_sb->local_nls,
+ cifs_sb->mnt_cifs_flags &
+ CIFS_MOUNT_MAP_SPECIAL_CHR);
+ else if (pTcon->unix_ext)
rc = CIFSUnixCreateSymLink(xid, pTcon, full_path, symname,
cifs_sb->local_nls);
/* else
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