[PATCH] fuse: add frsize to statfs reply
Add 'frsize' member to the statfs reply.
I'm not sure if sending f_fsid will ever be needed, but just in case leave
some space at the end of the structure, so less compatibility mess would be
required.
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index e69a546..3b928a0 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -218,6 +218,7 @@
{
stbuf->f_type = FUSE_SUPER_MAGIC;
stbuf->f_bsize = attr->bsize;
+ stbuf->f_frsize = attr->frsize;
stbuf->f_blocks = attr->blocks;
stbuf->f_bfree = attr->bfree;
stbuf->f_bavail = attr->bavail;
@@ -238,10 +239,12 @@
if (!req)
return -EINTR;
+ memset(&outarg, 0, sizeof(outarg));
req->in.numargs = 0;
req->in.h.opcode = FUSE_STATFS;
req->out.numargs = 1;
- req->out.args[0].size = sizeof(outarg);
+ req->out.args[0].size =
+ fc->minor < 4 ? FUSE_COMPAT_STATFS_SIZE : sizeof(outarg);
req->out.args[0].value = &outarg;
request_send(fc, req);
err = req->out.h.error;
diff --git a/include/linux/fuse.h b/include/linux/fuse.h
index 3c85f1a..9d5177c 100644
--- a/include/linux/fuse.h
+++ b/include/linux/fuse.h
@@ -53,6 +53,9 @@
__u64 ffree;
__u32 bsize;
__u32 namelen;
+ __u32 frsize;
+ __u32 padding;
+ __u32 spare[6];
};
#define FATTR_MODE (1 << 0)
@@ -213,6 +216,8 @@
__u32 padding;
};
+#define FUSE_COMPAT_STATFS_SIZE 48
+
struct fuse_statfs_out {
struct fuse_kstatfs st;
};
