smb3: fill in statfs fsid and correct namelen
Fil in the correct namelen (typically 255 not 4096) in the
statfs response and also fill in a reasonably unique fsid
(in this case taken from the volume id, and the creation time
of the volume).
In the case of the POSIX statfs all fields are now filled in,
and in the case of non-POSIX mounts, all fields are filled
in which can be.
Signed-off-by: Steve French <stfrench@gmail.com>
CC: Stable <stable@vger.kernel.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index a671adc..c2a4526 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -1248,6 +1248,17 @@ struct smb3_fs_ss_info {
__le32 ByteOffsetForPartitionAlignment;
} __packed;
+/* volume info struct - see MS-FSCC 2.5.9 */
+#define MAX_VOL_LABEL_LEN 32
+struct smb3_fs_vol_info {
+ __le64 VolumeCreationTime;
+ __u32 VolumeSerialNumber;
+ __le32 VolumeLabelLength; /* includes trailing null */
+ __u8 SupportsObjects; /* True if eg like NTFS, supports objects */
+ __u8 Reserved;
+ __u8 VolumeLabel[0]; /* variable len */
+} __packed;
+
/* partial list of QUERY INFO levels */
#define FILE_DIRECTORY_INFORMATION 1
#define FILE_FULL_DIRECTORY_INFORMATION 2