Commit 93c93658 authored by Neil Brown's avatar Neil Brown Committed by Linus Torvalds

[PATCH] PATCH 2/7: knfsd cleanup - FAT shouldn't return NULL

Stop fat_fh_to_dentry returning NULL

the fh_to_dentry routines should never return NULL.
The caller expects an ERR_PTR or a valid (possibly negative)
dentry.  fat did the wrong thing and so could oops.
parent 2712419f
......@@ -430,12 +430,13 @@ struct dentry *fat_fh_to_dentry(struct super_block *sb, __u32 *fh,
struct dentry *result;
if (fhtype != 3)
return NULL;
return ERR_PTR(-ESTALE);
if (len < 5)
return NULL;
if (parent)
return NULL; /* We cannot find the parent,
return ERR_PTR(-ESTALE);
/* We cannot find the parent,
It better just *be* there */
if (parent)
return ERR_PTR(-ESTALE);
inode = iget(sb, fh[0]);
if (!inode || is_bad_inode(inode) ||
......
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