tmpfiles: add new 'r' line type to add UIDs/GIDs to the pool to allocate UIDs/GIDs from

This way we can guarantee a limited amount of compatibility with
login.defs, by generate an appopriate "r" line out of it, on package
installation.

1 files changed, 91 insertions, 0 deletions

diff --git a/src/test/test-uid-range.c b/src/test/test-uid-range.c
new file mode 100644
index 0000000000..5f3d871b6c
--- /dev/null
+++ b/src/test/test-uid-range.c
@@ -0,0 +1,91 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright 2014 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <stddef.h>
+
+#include "util.h"
+#include "uid-range.h"
+
+int main(int argc, char *argv[]) {
+        _cleanup_free_ UidRange *p = NULL;
+        unsigned n = 0;
+        uid_t search;
+
+        assert_se(uid_range_add_str(&p, &n, "500-999") >= 0);
+        assert_se(n == 1);
+        assert_se(p[0].start == 500);
+        assert_se(p[0].nr = 500);
+
+        assert_se(!uid_range_contains(p, n, 499));
+        assert_se(uid_range_contains(p, n, 500));
+        assert_se(uid_range_contains(p, n, 999));
+        assert_se(!uid_range_contains(p, n, 1000));
+
+        search = (uid_t) -1;
+        assert_se(uid_range_next_lower(p, n, &search));
+        assert_se(search == 999);
+        assert_se(uid_range_next_lower(p, n, &search));
+        assert_se(search == 998);
+        search = 501;
+        assert_se(uid_range_next_lower(p, n, &search));
+        assert_se(search == 500);
+        assert_se(uid_range_next_lower(p, n, &search) == -EBUSY);
+
+        assert_se(uid_range_add_str(&p, &n, "1000") >= 0);
+        assert_se(n == 1);
+        assert_se(p[0].start == 500);
+        assert_se(p[0].nr = 501);
+
+        assert_se(uid_range_add_str(&p, &n, "30-40") >= 0);
+        assert_se(n == 2);
+        assert_se(p[0].start == 30);
+        assert_se(p[0].nr = 11);
+        assert_se(p[1].start == 500);
+        assert_se(p[1].nr = 501);
+
+        assert_se(uid_range_add_str(&p, &n, "60-70") >= 0);
+        assert_se(n == 3);
+        assert_se(p[0].start == 30);
+        assert_se(p[0].nr = 11);
+        assert_se(p[1].start == 60);
+        assert_se(p[1].nr = 11);
+        assert_se(p[2].start == 500);
+        assert_se(p[2].nr = 501);
+
+        assert_se(uid_range_add_str(&p, &n, "20-2000") >= 0);
+        assert_se(n == 1);
+        assert_se(p[0].start == 20);
+        assert_se(p[0].nr = 1981);
+
+        assert_se(uid_range_add_str(&p, &n, "2002") >= 0);
+        assert_se(n == 2);
+        assert_se(p[0].start == 20);
+        assert_se(p[0].nr = 1981);
+        assert_se(p[1].start == 2002);
+        assert_se(p[1].nr = 1);
+
+        assert_se(uid_range_add_str(&p, &n, "2001") >= 0);
+        assert_se(n == 1);
+        assert_se(p[0].start == 20);
+        assert_se(p[0].nr = 1983);
+
+        return 0;
+}