cifs_rename_pending_delete() attempts to silly rename file using
CIFSSMBRenameOpenFile(). This uses the SET_FILE_INFORMATION TRANS2
command with information level set to the passthru info-level
SMB_SET_FILE_RENAME_INFORMATION.
We need to check to make sure that the server support passthru
info-levels before attempting the silly rename or else we will fail to
rename the file.
Signed-off-by: Sachin Prabhu <sprabhu@xxxxxxxxxx>
---
fs/cifs/inode.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index a183b9d..fee2d40 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -986,6 +986,15 @@ cifs_rename_pending_delete(const char *full_path, struct dentry *dentry,
return PTR_ERR(tlink);
tcon = tlink_tcon(tlink);
+ /*
+ * We cannot rename the file if the server doesn't support
+ * CAP_INFOLEVEL_PASSTHRU
+ */
+ if (!(tcon->ses->capabilities & CAP_INFOLEVEL_PASSTHRU)) {
+ rc = -EBUSY;
+ goto out;
+ }
+
rc = CIFSSMBOpen(xid, tcon, full_path, FILE_OPEN,
DELETE|FILE_WRITE_ATTRIBUTES, CREATE_NOT_DIR,
&netfid, &oplock, NULL, cifs_sb->local_nls,
--
1.7.11.7
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