user-util: sysconf_ngroups_max

This hides the iffy interface of sysconf(_SC_NGROUPS_MAX) to simplify the calllers.
2026-07-02 17:19:18 +02:00
parent aac88fd8ab
commit 2c01b4895e
6 changed files with 23 additions and 14 deletions
@@ -917,14 +917,9 @@ static int get_supplementary_groups(
                return 0;
        }

-        /*
-         * If SupplementaryGroups= was passed then NGROUPS_MAX has to
-         * be positive, otherwise fail.
-         */
-        errno = 0;
-        long ngroups_max = sysconf(_SC_NGROUPS_MAX);
-        if (ngroups_max <= 0)
-                return errno_or_else(EOPNOTSUPP);
+        int ngroups_max = sysconf_ngroups_max();
+        if (ngroups_max < 0)
+                return ngroups_max;

        _cleanup_free_ gid_t *l_gids = new(gid_t, ngroups_max);
        if (!l_gids)