fuse: add helper for asynchronous writes

[linux-2.6] / include / linux / fuse.h

diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index 5425b60021e36193877aac02e6911db800808c4b..6f4a31266cd586a2eefe9fe2dd46fb5b2c3b0993 100644 (file)
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -1,26 +1,35 @@
 /*
     FUSE: Filesystem in Userspace
-    Copyright (C) 2001-2005  Miklos Szeredi <miklos@szeredi.hu>
+    Copyright (C) 2001-2006  Miklos Szeredi <miklos@szeredi.hu>
 
     This program can be distributed under the terms of the GNU GPL.
     See the file COPYING.
 */
 
-/* This file defines the kernel interface of FUSE */
+/*
+ * This file defines the kernel interface of FUSE
+ *
+ * Protocol changelog:
+ *
+ * 7.9:
+ *  - new fuse_getattr_in input argument of GETATTR
+ *  - add lk_flags in fuse_lk_in
+ */
 
 #include <asm/types.h>
+#include <linux/major.h>
 
 /** Version number of this interface */
 #define FUSE_KERNEL_VERSION 7
 
 /** Minor version number of this interface */
-#define FUSE_KERNEL_MINOR_VERSION 6
+#define FUSE_KERNEL_MINOR_VERSION 9
 
 /** The node ID of the root inode */
 #define FUSE_ROOT_ID 1
 
 /** The major number of the fuse character device */
-#define FUSE_MAJOR 10
+#define FUSE_MAJOR MISC_MAJOR
 
 /** The minor number of the fuse character device */
 #define FUSE_MINOR 229
@@ -58,6 +67,13 @@ struct fuse_kstatfs {
        __u32   spare[6];
 };
 
+struct fuse_file_lock {
+       __u64   start;
+       __u64   end;
+       __u32   type;
+       __u32   pid; /* tgid */
+};
+
 /**
  * Bitmasks for fuse_setattr_in.valid
  */
@@ -68,6 +84,8 @@ struct fuse_kstatfs {
 #define FATTR_ATIME    (1 << 4)
 #define FATTR_MTIME    (1 << 5)
 #define FATTR_FH       (1 << 6)
+#define FATTR_ATIME_NOW        (1 << 7)
+#define FATTR_MTIME_NOW        (1 << 8)
 
 /**
  * Flags returned by the OPEN request
@@ -82,6 +100,31 @@ struct fuse_kstatfs {
  * INIT request/reply flags
  */
 #define FUSE_ASYNC_READ                (1 << 0)
+#define FUSE_POSIX_LOCKS       (1 << 1)
+#define FUSE_FILE_OPS          (1 << 2)
+#define FUSE_ATOMIC_O_TRUNC    (1 << 3)
+
+/**
+ * Release flags
+ */
+#define FUSE_RELEASE_FLUSH     (1 << 0)
+
+/**
+ * Getattr flags
+ */
+#define FUSE_GETATTR_FH                (1 << 0)
+
+/**
+ * Lock flags
+ */
+#define FUSE_LK_FLOCK          (1 << 0)
+
+/**
+ * WRITE flags
+ *
+ * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed
+ */
+#define FUSE_WRITE_CACHE       (1 << 0)
 
 enum fuse_opcode {
        FUSE_LOOKUP        = 1,
@@ -112,8 +155,14 @@ enum fuse_opcode {
        FUSE_READDIR       = 28,
        FUSE_RELEASEDIR    = 29,
        FUSE_FSYNCDIR      = 30,
+       FUSE_GETLK         = 31,
+       FUSE_SETLK         = 32,
+       FUSE_SETLKW        = 33,
        FUSE_ACCESS        = 34,
-       FUSE_CREATE        = 35
+       FUSE_CREATE        = 35,
+       FUSE_INTERRUPT     = 36,
+       FUSE_BMAP          = 37,
+       FUSE_DESTROY       = 38,
 };
 
 /* The read buffer is required to be at least 8k, but may be much larger */
@@ -134,6 +183,12 @@ struct fuse_forget_in {
        __u64   nlookup;
 };
 
+struct fuse_getattr_in {
+       __u32   getattr_flags;
+       __u32   dummy;
+       __u64   fh;
+};
+
 struct fuse_attr_out {
        __u64   attr_valid;     /* Cache timeout for the attributes */
        __u32   attr_valid_nsec;
@@ -192,13 +247,15 @@ struct fuse_open_out {
 struct fuse_release_in {
        __u64   fh;
        __u32   flags;
-       __u32   padding;
+       __u32   release_flags;
+       __u64   lock_owner;
 };
 
 struct fuse_flush_in {
        __u64   fh;
-       __u32   flush_flags;
+       __u32   unused;
        __u32   padding;
+       __u64   lock_owner;
 };
 
 struct fuse_read_in {
@@ -247,6 +304,18 @@ struct fuse_getxattr_out {
        __u32   padding;
 };
 
+struct fuse_lk_in {
+       __u64   fh;
+       __u64   owner;
+       struct fuse_file_lock lk;
+       __u32   lk_flags;
+       __u32   padding;
+};
+
+struct fuse_lk_out {
+       struct fuse_file_lock lk;
+};
+
 struct fuse_access_in {
        __u32   mask;
        __u32   padding;
@@ -268,6 +337,20 @@ struct fuse_init_out {
        __u32   max_write;
 };
 
+struct fuse_interrupt_in {
+       __u64   unique;
+};
+
+struct fuse_bmap_in {
+       __u64   block;
+       __u32   blocksize;
+       __u32   padding;
+};
+
+struct fuse_bmap_out {
+       __u64   block;
+};
+
 struct fuse_in_header {
        __u32   len;
        __u32   opcode;
@@ -293,7 +376,7 @@ struct fuse_dirent {
        char name[0];
 };
 
-#define FUSE_NAME_OFFSET ((unsigned) ((struct fuse_dirent *) 0)->name)
+#define FUSE_NAME_OFFSET offsetof(struct fuse_dirent, name)
 #define FUSE_DIRENT_ALIGN(x) (((x) + sizeof(__u64) - 1) & ~(sizeof(__u64) - 1))
 #define FUSE_DIRENT_SIZE(d) \
        FUSE_DIRENT_ALIGN(FUSE_NAME_OFFSET + (d)->namelen)