summaryrefslogtreecommitdiffstats
path: root/fs/nfsd/export.c
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nfsd/export.c')
-rw-r--r--fs/nfsd/export.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index af51cf9bf2e3..8513c598fabf 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -580,16 +580,25 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen)
if (err)
goto out4;
/*
+ * No point caching this if it would immediately expire.
+ * Also, this protects exportfs's dummy export from the
+ * anon_uid/anon_gid checks:
+ */
+ if (exp.h.expiry_time < seconds_since_boot())
+ goto out4;
+ /*
* For some reason exportfs has been passing down an
* invalid (-1) uid & gid on the "dummy" export which it
* uses to test export support. To make sure exportfs
* sees errors from check_export we therefore need to
* delay these checks till after check_export:
*/
+ err = -EINVAL;
if (!uid_valid(exp.ex_anon_uid))
goto out4;
if (!gid_valid(exp.ex_anon_gid))
goto out4;
+ err = 0;
}
expp = svc_export_lookup(&exp);