shared: add minimal firewall manipulation helpers for establishing NAT rules, using...

[elogind.git] / src / shared / fstab-util.c

diff --git a/src/shared/fstab-util.c b/src/shared/fstab-util.c
index 546c81b80ff68bb4c9057ce8e71c4f143f3cfeb2..cf317e17bda65759c5ff7ac8fe59181dec85625d 100644 (file)
--- a/src/shared/fstab-util.c
+++ b/src/shared/fstab-util.c
@@ -133,13 +133,18 @@ int fstab_find_pri(const char *options, int *ret) {
         assert(ret);
 
         r = fstab_filter_options(options, "pri\0", NULL, &opt, NULL);
-        if (r <= 0)
+        if (r < 0)
                 return r;
+        if (r == 0 || !opt)
+                return 0;
 
         r = safe_atou(opt, &pri);
         if (r < 0)
                 return r;
 
-        *ret = (int) r;
+        if ((int) pri < 0)
+                return -ERANGE;
+
+        *ret = (int) pri;
         return 1;
 }