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[GFS2] NFS filehandle check

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File handle checking error found in '07 NFS connectathon. The fh_type
and fh_len are not necessarily identical. Some of the client machines
could fail mount with stale filehandle without this patch.

Signed-off-by: S. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Wendy Cheng 2007-02-23 00:21:17 -05:00 committed by Steven Whitehouse
parent d5a6751b32
commit a7d2b2bdc9
1 changed files with 1 additions and 4 deletions
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5
fs/gfs2/ops_export.c
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@ -38,14 +38,11 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb,
struct gfs2_fh_obj fh_obj; struct gfs2_fh_obj fh_obj;
struct gfs2_inum_host *this, parent; struct gfs2_inum_host *this, parent;
if (fh_type != fh_len)
return NULL;
this = &fh_obj.this; this = &fh_obj.this;
fh_obj.imode = DT_UNKNOWN; fh_obj.imode = DT_UNKNOWN;
memset(&parent, 0, sizeof(struct gfs2_inum)); memset(&parent, 0, sizeof(struct gfs2_inum));
switch (fh_type) { switch (fh_len) {
case GFS2_LARGE_FH_SIZE: case GFS2_LARGE_FH_SIZE:
parent.no_formal_ino = ((u64)be32_to_cpu(fh[4])) << 32; parent.no_formal_ino = ((u64)be32_to_cpu(fh[4])) << 32;
parent.no_formal_ino |= be32_to_cpu(fh[5]); parent.no_formal_ino |= be32_to_cpu(fh[5]);