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ceph: Fix return value of encode_fh function

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encode_fh function should return 255 on error as done by other file
system to indicate EOVERFLOW. Also max_len is in sizeof(u32) units
and not in bytes.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Aneesh Kumar K.V 2010-10-05 16:03:41 +05:30 committed by Sage Weil
parent 6bc18876ba
commit 92923dcbfc
1 changed files with 9 additions and 7 deletions
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16
fs/ceph/export.c
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@ -42,32 +42,34 @@ struct ceph_nfs_confh {
static int ceph_encode_fh(struct dentry *dentry, u32 *rawfh, int *max_len,
int connectable)
{
int type;
struct ceph_nfs_fh *fh = (void *)rawfh;
struct ceph_nfs_confh *cfh = (void *)rawfh;
struct dentry *parent = dentry->d_parent;
struct inode *inode = dentry->d_inode;
int type;
int connected_handle_length = sizeof(*cfh)/4;
int handle_length = sizeof(*fh)/4;
/* don't re-export snaps */
if (ceph_snap(inode) != CEPH_NOSNAP)
return -EINVAL;
if (*max_len >= sizeof(*cfh)) {
if (*max_len >= connected_handle_length) {
dout("encode_fh %p connectable\n", dentry);
cfh->ino = ceph_ino(dentry->d_inode);
cfh->parent_ino = ceph_ino(parent->d_inode);
cfh->parent_name_hash = parent->d_name.hash;
*max_len = sizeof(*cfh);
*max_len = connected_handle_length;
type = 2;
} else if (*max_len > sizeof(*fh)) {
} else if (*max_len >= handle_length) {
if (connectable)
return -ENOSPC;
return 255;
dout("encode_fh %p\n", dentry);
fh->ino = ceph_ino(dentry->d_inode);
*max_len = sizeof(*fh);
*max_len = handle_length;
type = 1;
} else {
return -ENOSPC;
return 255;
}
return type;
}