fuse: add support for mandatory locking

[linux-2.6-omap-h63xx.git] / include / linux / fuse.h

diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index 6f4a31266cd586a2eefe9fe2dd46fb5b2c3b0993..7d4fa5b25b87996b925da0cbd5a3bc1e9b38c97c 100644 (file)
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -14,6 +14,7 @@
  * 7.9:
  *  - new fuse_getattr_in input argument of GETATTR
  *  - add lk_flags in fuse_lk_in
+ *  - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in
  */
 
 #include <asm/types.h>
@@ -86,6 +87,7 @@ struct fuse_file_lock {
 #define FATTR_FH       (1 << 6)
 #define FATTR_ATIME_NOW        (1 << 7)
 #define FATTR_MTIME_NOW        (1 << 8)
+#define FATTR_LOCKOWNER        (1 << 9)
 
 /**
  * Flags returned by the OPEN request
@@ -123,8 +125,15 @@ struct fuse_file_lock {
  * WRITE flags
  *
  * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
+ * FUSE_WRITE_LOCKOWNER: lock_owner field is valid
  */
 #define FUSE_WRITE_CACHE       (1 << 0)
+#define FUSE_WRITE_LOCKOWNER   (1 << 1)
+
+/**
+ * Read flags
+ */
+#define FUSE_READ_LOCKOWNER    (1 << 1)
 
 enum fuse_opcode {
        FUSE_LOOKUP        = 1,
@@ -219,7 +228,7 @@ struct fuse_setattr_in {
        __u32   padding;
        __u64   fh;
        __u64   size;
-       __u64   unused1;
+       __u64   lock_owner;
        __u64   atime;
        __u64   mtime;
        __u64   unused2;
@@ -262,14 +271,18 @@ struct fuse_read_in {
        __u64   fh;
        __u64   offset;
        __u32   size;
-       __u32   padding;
+       __u32   read_flags;
+       __u64   lock_owner;
 };
 
+#define FUSE_COMPAT_WRITE_IN_SIZE 24
+
 struct fuse_write_in {
        __u64   fh;
        __u64   offset;
        __u32   size;
        __u32   write_flags;
+       __u64   lock_owner;
 };
 
 struct fuse_write_out {