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authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>2011-01-29 16:13:25 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2011-03-14 16:15:28 +0300
commit5fe0c2378884e68beb532f5890cc0e3539ac747b (patch)
treebe25414052184e146049ea6466854366559d5528 /fs/isofs
parentc8b91accfa1059d5565443193d89572eca2f5dd6 (diff)
downloadlinux-5fe0c2378884e68beb532f5890cc0e3539ac747b.tar.xz
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/isofs')
-rw-r--r--fs/isofs/export.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/isofs/export.c b/fs/isofs/export.c
index ed752cb38474..dd4687ff30d0 100644
--- a/fs/isofs/export.c
+++ b/fs/isofs/export.c
@@ -124,9 +124,13 @@ isofs_export_encode_fh(struct dentry *dentry,
* offset of the inode and the upper 16 bits of fh32[1] to
* hold the offset of the parent.
*/
-
- if (len < 3 || (connectable && len < 5))
+ if (connectable && (len < 5)) {
+ *max_len = 5;
+ return 255;
+ } else if (len < 3) {
+ *max_len = 3;
return 255;
+ }
len = 3;
fh32[0] = ei->i_iget5_block;