On Thu, 2016-05-12 at 21:30 -0500, Steve French wrote:
> For SMB3 (unlike for cifs), we attempt to delete a directory by
> set of delete on close flag on the open. Windows clients set
> this flag via a set info (SET_FILE_DISPOSITION to set this flag)
> which properly checks if the directory is empty.
>
> With this patch on smb3 mounts we correctly return
> "DIRECTORY NOT EMPTY"
> on attempts to remove a non-empty directory.
>
> Signed-off-by: Steve French <steve.french@xxxxxxxxxxxxxxx>
> CC: Stable <stable@xxxxxxxxxxxxxxx>
Acked-by: Sachin Prabhu <sprabhu@xxxxxxxxxx>
> ---
> fs/cifs/smb2glob.h | 1 +
> fs/cifs/smb2inode.c | 8 ++++++--
> fs/cifs/smb2pdu.c | 16 ++++++++++++++++
> fs/cifs/smb2proto.h | 2 ++
> 4 files changed, 25 insertions(+), 2 deletions(-)
>
> diff --git a/fs/cifs/smb2glob.h b/fs/cifs/smb2glob.h
> index bc0bb9c..0ffa180 100644
> --- a/fs/cifs/smb2glob.h
> +++ b/fs/cifs/smb2glob.h
> @@ -44,6 +44,7 @@
> #define SMB2_OP_DELETE 7
> #define SMB2_OP_HARDLINK 8
> #define SMB2_OP_SET_EOF 9
> +#define SMB2_OP_RMDIR 10
>
> /* Used when constructing chained read requests. */
> #define CHAINED_REQUEST 1
> diff --git a/fs/cifs/smb2inode.c b/fs/cifs/smb2inode.c
> index 899bbc8..4f0231e 100644
> --- a/fs/cifs/smb2inode.c
> +++ b/fs/cifs/smb2inode.c
> @@ -80,6 +80,10 @@ smb2_open_op_close(const unsigned int xid, struct
> cifs_tcon *tcon,
> * SMB2_open() call.
> */
> break;
> + case SMB2_OP_RMDIR:
> + tmprc = SMB2_rmdir(xid, tcon, fid.persistent_fid,
> + fid.volatile_fid);
> + break;
> case SMB2_OP_RENAME:
> tmprc = SMB2_rename(xid, tcon, fid.persistent_fid,
> fid.volatile_fid, (__le16
> *)data);
> @@ -191,8 +195,8 @@ smb2_rmdir(const unsigned int xid, struct
> cifs_tcon *tcon, const char *name,
> struct cifs_sb_info *cifs_sb)
> {
> return smb2_open_op_close(xid, tcon, cifs_sb, name, DELETE,
> FILE_OPEN,
> - CREATE_NOT_FILE |
> CREATE_DELETE_ON_CLOSE,
> - NULL, SMB2_OP_DELETE);
> + CREATE_NOT_FILE,
> + NULL, SMB2_OP_RMDIR);
> }
>
> int
> diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
> index 42e1f44..8f38e33 100644
> --- a/fs/cifs/smb2pdu.c
> +++ b/fs/cifs/smb2pdu.c
> @@ -2575,6 +2575,22 @@ SMB2_rename(const unsigned int xid, struct
> cifs_tcon *tcon,
> }
>
> int
> +SMB2_rmdir(const unsigned int xid, struct cifs_tcon *tcon,
> + u64 persistent_fid, u64 volatile_fid)
> +{
> + __u8 delete_pending = 1;
> + void *data;
> + unsigned int size;
> +
> + data = &delete_pending;
> + size = 1; /* sizeof __u8 */
> +
> + return send_set_info(xid, tcon, persistent_fid,
> volatile_fid,
> + current->tgid, FILE_DISPOSITION_INFORMATION,
> 1, &data,
> + &size);
> +}
> +
> +int
> SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
> u64 persistent_fid, u64 volatile_fid, __le16
> *target_file)
> {
> diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
> index 4f07dc9..eb2cde2 100644
> --- a/fs/cifs/smb2proto.h
> +++ b/fs/cifs/smb2proto.h
> @@ -141,6 +141,8 @@ extern int SMB2_query_directory(const unsigned
> int xid, struct cifs_tcon *tcon,
> extern int SMB2_rename(const unsigned int xid, struct cifs_tcon
> *tcon,
> u64 persistent_fid, u64 volatile_fid,
> __le16 *target_file);
> +extern int SMB2_rmdir(const unsigned int xid, struct cifs_tcon
> *tcon,
> + u64 persistent_fid, u64 volatile_fid);
> extern int SMB2_set_hardlink(const unsigned int xid, struct
> cifs_tcon *tcon,
> u64 persistent_fid, u64 volatile_fid,
> __le16 *target_file);
--
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