[CIFS] Add posix (advisory) byte range locking support to cifs client
Samba (version 3) server support for this is also currently being
done. This client code is in an experimental path (requires enabling
/proc/fs/cifs/Experimental) while it is being tested.
Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index cc24710..b758661 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -859,7 +859,10 @@
LOCKING_ANDX_RANGE Locks[1];
} __attribute__((packed)) LOCK_REQ;
-
+/* lock type */
+#define CIFS_RDLCK 0
+#define CIFS_WRLCK 1
+#define CIFS_UNLCK 2
typedef struct cifs_posix_lock {
__le16 lock_type; /* 0 = Read, 1 = Write, 2 = Unlock */
__le16 lock_flags; /* 1 = Wait (only valid for setlock) */