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vfs cache: return ENOTDIR for not_a_dir/{.,..} lookups

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Reported by:	Oliver Kiddle
PR:	270419
MFC:	3 days
This commit is contained in:
Mateusz Guzik 2023-03-23 19:19:48 +00:00
parent 6a4f5fdd19
commit c16c4ea6d3
1 changed files with 11 additions and 0 deletions
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11
sys/kern/vfs_cache.c
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@ -5065,6 +5065,12 @@ cache_fplookup_dot(struct cache_fpl *fpl)
int error;
MPASS(!seqc_in_modify(fpl->dvp_seqc));
if (__predict_false(fpl->dvp->v_type != VDIR)) {
cache_fpl_smr_exit(fpl);
return (cache_fpl_handled_error(fpl, ENOTDIR));
}
/*
* Just re-assign the value. seqc will be checked later for the first
* non-dot path component in line and/or before deciding to return the
@ -5127,6 +5133,11 @@ cache_fplookup_dotdot(struct cache_fpl *fpl)
return (cache_fpl_partial(fpl));
}
if (__predict_false(dvp->v_type != VDIR)) {
cache_fpl_smr_exit(fpl);
return (cache_fpl_handled_error(fpl, ENOTDIR));
}
ncp = atomic_load_consume_ptr(&dvp->v_cache_dd);
if (ncp == NULL) {
return (cache_fpl_aborted(fpl));