cifs: use protocol specific call for query_mf_symlink()
We have an existing protocol specific call query_mf_symlink() created
for check_mf_symlink which can also be used for query_mf_symlink().
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 500bc77..77dbd55 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -237,55 +237,36 @@
static int
query_mf_symlink(const unsigned int xid, struct cifs_tcon *tcon,
- const unsigned char *searchName, char **symlinkinfo,
- const struct nls_table *nls_codepage, int remap)
+ struct cifs_sb_info *cifs_sb, const unsigned char *path,
+ char **symlinkinfo)
{
int rc;
- int oplock = 0;
- __u16 netfid = 0;
- u8 *buf;
- char *pbuf;
- unsigned int bytes_read = 0;
- int buf_type = CIFS_NO_BUFFER;
+ u8 *buf = NULL;
unsigned int link_len = 0;
- struct cifs_io_parms io_parms;
- FILE_ALL_INFO file_info;
-
- rc = CIFSSMBOpen(xid, tcon, searchName, FILE_OPEN, GENERIC_READ,
- CREATE_NOT_DIR, &netfid, &oplock, &file_info,
- nls_codepage, remap);
- if (rc != 0)
- return rc;
-
- if (file_info.EndOfFile != cpu_to_le64(CIFS_MF_SYMLINK_FILE_SIZE)) {
- CIFSSMBClose(xid, tcon, netfid);
- /* it's not a symlink */
- return -EINVAL;
- }
+ unsigned int bytes_read = 0;
buf = kmalloc(CIFS_MF_SYMLINK_FILE_SIZE, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- pbuf = buf;
- io_parms.netfid = netfid;
- io_parms.pid = current->tgid;
- io_parms.tcon = tcon;
- io_parms.offset = 0;
- io_parms.length = CIFS_MF_SYMLINK_FILE_SIZE;
- rc = CIFSSMBRead(xid, &io_parms, &bytes_read, &pbuf, &buf_type);
- CIFSSMBClose(xid, tcon, netfid);
- if (rc != 0) {
- kfree(buf);
- return rc;
+ if (tcon->ses->server->ops->query_mf_symlink)
+ rc = tcon->ses->server->ops->query_mf_symlink(xid, tcon,
+ cifs_sb, path, buf, &bytes_read);
+ else
+ rc = -ENOSYS;
+
+ if (rc)
+ goto out;
+
+ if (bytes_read == 0) { /* not a symlink */
+ rc = -EINVAL;
+ goto out;
}
rc = parse_mf_symlink(buf, bytes_read, &link_len, symlinkinfo);
+out:
kfree(buf);
- if (rc != 0)
- return rc;
-
- return 0;
+ return rc;
}
bool
@@ -517,10 +498,8 @@
* and fallback to UNIX Extensions Symlinks.
*/
if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MF_SYMLINKS)
- rc = query_mf_symlink(xid, tcon, full_path, &target_path,
- cifs_sb->local_nls,
- cifs_sb->mnt_cifs_flags &
- CIFS_MOUNT_MAP_SPECIAL_CHR);
+ rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
+ &target_path);
if ((rc != 0) && cap_unix(tcon->ses))
rc = CIFSSMBUnixQuerySymLink(xid, tcon, full_path, &target_path,
