CIFS: Move rename to ops struct

Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 48 insertions, 44 deletions

diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index c6f6b02cf3b5..2f3235f08c3f 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1512,29 +1512,32 @@ rmdir_exit:
 }
 
 static int
-cifs_do_rename(unsigned int xid, struct dentry *from_dentry,
-               const char *fromPath, struct dentry *to_dentry,
-               const char *toPath)
+cifs_do_rename(const unsigned int xid, struct dentry *from_dentry,
+               const char *from_path, struct dentry *to_dentry,
+               const char *to_path)
 {
         struct cifs_sb_info *cifs_sb = CIFS_SB(from_dentry->d_sb);
         struct tcon_link *tlink;
-        struct cifs_tcon *pTcon;
+        struct cifs_tcon *tcon;
+        struct TCP_Server_Info *server;
         __u16 srcfid;
         int oplock, rc;
 
         tlink = cifs_sb_tlink(cifs_sb);
         if (IS_ERR(tlink))
                 return PTR_ERR(tlink);
-        pTcon = tlink_tcon(tlink);
+        tcon = tlink_tcon(tlink);
+        server = tcon->ses->server;
+
+        if (!server->ops->rename)
+                return -ENOSYS;
 
         /* try path-based rename first */
-        rc = CIFSSMBRename(xid, pTcon, fromPath, toPath, cifs_sb->local_nls,
-                           cifs_sb->mnt_cifs_flags &
-                                CIFS_MOUNT_MAP_SPECIAL_CHR);
+        rc = server->ops->rename(xid, tcon, from_path, to_path, cifs_sb);
 
         /*
-         * don't bother with rename by filehandle unless file is busy and
-         * source Note that cross directory moves do not work with
+         * Don't bother with rename by filehandle unless file is busy and
+         * source. Note that cross directory moves do not work with
          * rename by filehandle to various Windows servers.
          */
         if (rc == 0 || rc != -ETXTBSY)
@@ -1545,29 +1548,28 @@ cifs_do_rename(unsigned int xid, struct dentry *from_dentry,
                 goto do_rename_exit;
 
         /* open the file to be renamed -- we need DELETE perms */
-        rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
+        rc = CIFSSMBOpen(xid, tcon, from_path, FILE_OPEN, DELETE,
                          CREATE_NOT_DIR, &srcfid, &oplock, NULL,
                          cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
                                 CIFS_MOUNT_MAP_SPECIAL_CHR);
-
         if (rc == 0) {
-                rc = CIFSSMBRenameOpenFile(xid, pTcon, srcfid,
+                rc = CIFSSMBRenameOpenFile(xid, tcon, srcfid,
                                 (const char *) to_dentry->d_name.name,
                                 cifs_sb->local_nls, cifs_sb->mnt_cifs_flags &
                                         CIFS_MOUNT_MAP_SPECIAL_CHR);
-
-                CIFSSMBClose(xid, pTcon, srcfid);
+                CIFSSMBClose(xid, tcon, srcfid);
         }
 do_rename_exit:
         cifs_put_tlink(tlink);
         return rc;
 }
 
-int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
-        struct inode *target_dir, struct dentry *target_dentry)
+int
+cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
+            struct inode *target_dir, struct dentry *target_dentry)
 {
-        char *fromName = NULL;
-        char *toName = NULL;
+        char *from_name = NULL;
+        char *to_name = NULL;
         struct cifs_sb_info *cifs_sb;
         struct tcon_link *tlink;
         struct cifs_tcon *tcon;
@@ -1588,25 +1590,25 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
          * we already have the rename sem so we do not need to
          * grab it again here to protect the path integrity
          */
-        fromName = build_path_from_dentry(source_dentry);
-        if (fromName == NULL) {
+        from_name = build_path_from_dentry(source_dentry);
+        if (from_name == NULL) {
                 rc = -ENOMEM;
                 goto cifs_rename_exit;
         }
 
-        toName = build_path_from_dentry(target_dentry);
-        if (toName == NULL) {
+        to_name = build_path_from_dentry(target_dentry);
+        if (to_name == NULL) {
                 rc = -ENOMEM;
                 goto cifs_rename_exit;
         }
 
-        rc = cifs_do_rename(xid, source_dentry, fromName,
-                            target_dentry, toName);
+        rc = cifs_do_rename(xid, source_dentry, from_name, target_dentry,
+                            to_name);
 
         if (rc == -EEXIST && tcon->unix_ext) {
                 /*
-                 * Are src and dst hardlinks of same inode? We can
-                 * only tell with unix extensions enabled
+                 * Are src and dst hardlinks of same inode? We can only tell
+                 * with unix extensions enabled.
                  */
                 info_buf_source =
                         kmalloc(2 * sizeof(FILE_UNIX_BASIC_INFO),
@@ -1617,19 +1619,19 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
                 }
 
                 info_buf_target = info_buf_source + 1;
-                tmprc = CIFSSMBUnixQPathInfo(xid, tcon, fromName,
-                                        info_buf_source,
-                                        cifs_sb->local_nls,
-                                        cifs_sb->mnt_cifs_flags &
-                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
+                tmprc = CIFSSMBUnixQPathInfo(xid, tcon, from_name,
+                                             info_buf_source,
+                                             cifs_sb->local_nls,
+                                             cifs_sb->mnt_cifs_flags &
+                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
                 if (tmprc != 0)
                         goto unlink_target;
 
-                tmprc = CIFSSMBUnixQPathInfo(xid, tcon, toName,
-                                        info_buf_target,
-                                        cifs_sb->local_nls,
-                                        cifs_sb->mnt_cifs_flags &
-                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
+                tmprc = CIFSSMBUnixQPathInfo(xid, tcon, to_name,
+                                             info_buf_target,
+                                             cifs_sb->local_nls,
+                                             cifs_sb->mnt_cifs_flags &
+                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
 
                 if (tmprc == 0 && (info_buf_source->UniqueId ==
                                    info_buf_target->UniqueId)) {
@@ -1637,8 +1639,11 @@ int cifs_rename(struct inode *source_dir, struct dentry *source_dentry,
                         rc = 0;
                         goto cifs_rename_exit;
                 }
-        } /* else ... BB we could add the same check for Windows by
-                     checking the UniqueId via FILE_INTERNAL_INFO */
+        }
+        /*
+         * else ... BB we could add the same check for Windows by
+         * checking the UniqueId via FILE_INTERNAL_INFO
+         */
 
 unlink_target:
         /* Try unlinking the target dentry if it's not negative */
@@ -1646,15 +1651,14 @@ unlink_target:
                 tmprc = cifs_unlink(target_dir, target_dentry);
                 if (tmprc)
                         goto cifs_rename_exit;
-
-                rc = cifs_do_rename(xid, source_dentry, fromName,
-                                    target_dentry, toName);
+                rc = cifs_do_rename(xid, source_dentry, from_name,
+                                    target_dentry, to_name);
         }
 
 cifs_rename_exit:
         kfree(info_buf_source);
-        kfree(fromName);
-        kfree(toName);
+        kfree(from_name);
+        kfree(to_name);
         free_xid(xid);
         cifs_put_tlink(tlink);
         return rc;