9p: Implement TGETLOCK

[cascardo/linux.git] / include / net / 9p / 9p.h

diff --git a/include/net/9p/9p.h b/include/net/9p/9p.h
index a8de812..6367a71 100644 (file)
--- a/include/net/9p/9p.h
+++ b/include/net/9p/9p.h
@@ -86,6 +86,8 @@ do { \
 
 /**
  * enum p9_msg_t - 9P message types
+ * @P9_TLERROR: not used
+ * @P9_RLERROR: response for any failed request for 9P2000.L
  * @P9_TSTATFS: file system status request
  * @P9_RSTATFS: file system status response
  * @P9_TSYMLINK: make symlink request
@@ -137,6 +139,8 @@ do { \
  */
 
 enum p9_msg_t {
+       P9_TLERROR = 6,
+       P9_RLERROR,
        P9_TSTATFS = 8,
        P9_RSTATFS,
        P9_TLOPEN = 12,
@@ -159,6 +163,12 @@ enum p9_msg_t {
        P9_RXATTRCREATE,
        P9_TREADDIR = 40,
        P9_RREADDIR,
+       P9_TFSYNC = 50,
+       P9_RFSYNC,
+       P9_TLOCK = 52,
+       P9_RLOCK,
+       P9_TGETLOCK = 54,
+       P9_RGETLOCK,
        P9_TLINK = 70,
        P9_RLINK,
        P9_TMKDIR = 72,
@@ -458,6 +468,48 @@ struct p9_iattr_dotl {
        u64 mtime_nsec;
 };
 
+#define P9_LOCK_SUCCESS 0
+#define P9_LOCK_BLOCKED 1
+#define P9_LOCK_ERROR 2
+#define P9_LOCK_GRACE 3
+
+#define P9_LOCK_FLAGS_BLOCK 1
+#define P9_LOCK_FLAGS_RECLAIM 2
+
+/* struct p9_flock: POSIX lock structure
+ * @type - type of lock
+ * @flags - lock flags
+ * @start - starting offset of the lock
+ * @length - number of bytes
+ * @proc_id - process id which wants to take lock
+ * @client_id - client id
+ */
+
+struct p9_flock {
+       u8 type;
+       u32 flags;
+       u64 start;
+       u64 length;
+       u32 proc_id;
+       char *client_id;
+};
+
+/* struct p9_getlock: getlock structure
+ * @type - type of lock
+ * @start - starting offset of the lock
+ * @length - number of bytes
+ * @proc_id - process id which wants to take lock
+ * @client_id - client id
+ */
+
+struct p9_getlock {
+       u8 type;
+       u64 start;
+       u64 length;
+       u32 proc_id;
+       char *client_id;
+};
+
 /* Structures for Protocol Operations */
 struct p9_tstatfs {
        u32 fid;