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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-01-29 14:13:25 +0100
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-14 14:15:28 +0100
commit5fe0c2378884e68beb532f5890cc0e3539ac747b (patch)
treebe25414052184e146049ea6466854366559d5528 /fs/ocfs2/export.c
parentclean statfs-like syscalls up (diff)
downloadlinux-5fe0c2378884e68beb532f5890cc0e3539ac747b.tar.xz
linux-5fe0c2378884e68beb532f5890cc0e3539ac747b.zip
exportfs: Return the minimum required handle size
The exportfs encode handle function should return the minimum required handle size. This helps user to find out the handle size by passing 0 handle size in the first step and then redoing to the call again with the returned handle size value. Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ocfs2/export.c')
-rw-r--r--fs/ocfs2/export.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index 5dbc3062b4fd..254652a9b542 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -197,8 +197,12 @@ static int ocfs2_encode_fh(struct dentry *dentry, u32 *fh_in, int *max_len,
dentry->d_name.len, dentry->d_name.name,
fh, len, connectable);
- if (len < 3 || (connectable && len < 6)) {
- mlog(ML_ERROR, "fh buffer is too small for encoding\n");
+ if (connectable && (len < 6)) {
+ *max_len = 6;
+ type = 255;
+ goto bail;
+ } else if (len < 3) {
+ *max_len = 3;
type = 255;
goto bail;
}