[PATCH] FUSE: add padding

Add padding to structures to make sizes the same on 32bit and 64bit archs.
Initial testing and test machine generously provided by Franco Broi.

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index bf564edf9905..e9b814e16c58 100644
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -25,6 +25,9 @@
 /** The minor number of the fuse character device */
 #define FUSE_MINOR 229
 
+/* Make sure all structures are padded to 64bit boundary, so 32bit
+   userspace works under 64bit kernels */
+
 struct fuse_attr {
         __u64   ino;
         __u64   size;
@@ -128,6 +131,7 @@ struct fuse_mknod_in {
 
 struct fuse_mkdir_in {
         __u32   mode;
+        __u32   padding;
 };
 
 struct fuse_rename_in {
@@ -140,32 +144,38 @@ struct fuse_link_in {
 
 struct fuse_setattr_in {
         __u32   valid;
+        __u32   padding;
         struct fuse_attr attr;
 };
 
 struct fuse_open_in {
         __u32   flags;
+        __u32   padding;
 };
 
 struct fuse_open_out {
         __u64   fh;
         __u32   open_flags;
+        __u32   padding;
 };
 
 struct fuse_release_in {
         __u64   fh;
         __u32   flags;
+        __u32   padding;
 };
 
 struct fuse_flush_in {
         __u64   fh;
         __u32   flush_flags;
+        __u32   padding;
 };
 
 struct fuse_read_in {
         __u64   fh;
         __u64   offset;
         __u32   size;
+        __u32   padding;
 };
 
 struct fuse_write_in {
@@ -177,6 +187,7 @@ struct fuse_write_in {
 
 struct fuse_write_out {
         __u32   size;
+        __u32   padding;
 };
 
 struct fuse_statfs_out {
@@ -186,6 +197,7 @@ struct fuse_statfs_out {
 struct fuse_fsync_in {
         __u64   fh;
         __u32   fsync_flags;
+        __u32   padding;
 };
 
 struct fuse_setxattr_in {
@@ -195,10 +207,12 @@ struct fuse_setxattr_in {
 
 struct fuse_getxattr_in {
         __u32   size;
+        __u32   padding;
 };
 
 struct fuse_getxattr_out {
         __u32   size;
+        __u32   padding;
 };
 
 struct fuse_init_in_out {
@@ -214,6 +228,7 @@ struct fuse_in_header {
         __u32   uid;
         __u32   gid;
         __u32   pid;
+        __u32   padding;
 };
 
 struct fuse_out_header {