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| author | Paulo Alcantara <palcantara@suse.de> | 2018-05-04 11:25:26 -0300 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2018-05-09 11:48:42 -0500 |
| commit | ae2cd7fb478b8da707906ee1706ae1379968a8f9 (patch) | |
| tree | 1884c6ee363e9f0067ba11f791744e2767f25076 /fs | |
| parent | f7c439668a291ca94f358e44d3a3e9f2a2524b8a (diff) | |
| download | linux-0-day-ae2cd7fb478b8da707906ee1706ae1379968a8f9.tar.gz linux-0-day-ae2cd7fb478b8da707906ee1706ae1379968a8f9.tar.xz | |
cifs: smb2ops: Fix listxattr() when there are no EAs
As per listxattr(2):
On success, a nonnegative number is returned indicating the size
of the extended attribute name list. On failure, -1 is returned
and errno is set appropriately.
In SMB1, when the server returns an empty EA list through a listxattr(),
it will correctly return 0 as there are no EAs for the given file.
However, in SMB2+, it returns -ENODATA in listxattr() which is wrong since
the request and response were sent successfully, although there's no actual
EA for the given file.
This patch fixes listxattr() for SMB2+ by returning 0 in cifs_listxattr()
when the server returns an empty list of EAs.
Signed-off-by: Paulo Alcantara <palcantara@suse.de>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/smb2ops.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index b76b85881dcc6..9c6d95ffca97d 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -589,9 +589,15 @@ smb2_query_eas(const unsigned int xid, struct cifs_tcon *tcon, SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid); + /* + * If ea_name is NULL (listxattr) and there are no EAs, return 0 as it's + * not an error. Otherwise, the specified ea_name was not found. + */ if (!rc) rc = move_smb2_ea_to_cifs(ea_data, buf_size, smb2_data, SMB2_MAX_EA_BUF, ea_name); + else if (!ea_name && rc == -ENODATA) + rc = 0; kfree(smb2_data); return rc; |