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Commit a7d2b2bd authored by Wendy Cheng's avatar Wendy Cheng Committed by Steven Whitehouse
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[GFS2] NFS filehandle check 



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: default avatarS. Wendy Cheng <wcheng@redhat.com>
Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent d5a6751b

fs/gfs2/ops_export.c

+1 −4
Original line number Diff line number Diff line
@@ -38,14 +38,11 @@ static struct dentry *gfs2_decode_fh(struct super_block *sb, 
	struct gfs2_fh_obj fh_obj;

	struct gfs2_inum_host *this, parent;



	if (fh_type != fh_len)

		return NULL;



	this 		= &fh_obj.this;

	fh_obj.imode 	= DT_UNKNOWN;

	memset(&parent, 0, sizeof(struct gfs2_inum));



	switch (fh_type) {

	switch (fh_len) {

	case GFS2_LARGE_FH_SIZE:

		parent.no_formal_ino = ((u64)be32_to_cpu(fh[4])) << 32;

		parent.no_formal_ino |= be32_to_cpu(fh[5]);