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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-01-29 18:43:25 +0530
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-14 09:15:28 -0400
commit5fe0c2378884e68beb532f5890cc0e3539ac747b (patch)
treebe25414052184e146049ea6466854366559d5528 /fs/exportfs
parentc8b91accfa1059d5565443193d89572eca2f5dd6 (diff)
downloadlinux-stericsson-5fe0c2378884e68beb532f5890cc0e3539ac747b.tar.gz
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/exportfs')
-rw-r--r--fs/exportfs/expfs.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/exportfs/expfs.c b/fs/exportfs/expfs.c
index 4b6825740dd5..cfe55731b6dc 100644
--- a/fs/exportfs/expfs.c
+++ b/fs/exportfs/expfs.c
@@ -320,9 +320,14 @@ static int export_encode_fh(struct dentry *dentry, struct fid *fid,
struct inode * inode = dentry->d_inode;
int len = *max_len;
int type = FILEID_INO32_GEN;
-
- if (len < 2 || (connectable && len < 4))
+
+ if (connectable && (len < 4)) {
+ *max_len = 4;
+ return 255;
+ } else if (len < 2) {
+ *max_len = 2;
return 255;
+ }
len = 2;
fid->i32.ino = inode->i_ino;