1 files changed, 111 insertions, 0 deletions
diff --git a/src/test/test-cap-list.c b/src/test/test-cap-list.c
new file mode 100644
index 0000000000..2fd1ee75d5
--- /dev/null
+++ b/src/test/test-cap-list.c
@@ -0,0 +1,111 @@
+/***
+  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 <sys/prctl.h>
+
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/cap-list.h"
+#include "systemd-basic/capability-util.h"
+#include "systemd-basic/fileio.h"
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/util.h"
+
+/* verify the capability parser */
+static void test_cap_list(void) {
+        int i;
+
+        assert_se(!capability_to_name(-1));
+        assert_se(!capability_to_name(capability_list_length()));
+
+        for (i = 0; i < capability_list_length(); i++) {
+                const char *n;
+
+                assert_se(n = capability_to_name(i));
+                assert_se(capability_from_name(n) == i);
+                printf("%s = %i\n", n, i);
+        }
+
+        assert_se(capability_from_name("asdfbsd") == -EINVAL);
+        assert_se(capability_from_name("CAP_AUDIT_READ") == CAP_AUDIT_READ);
+        assert_se(capability_from_name("cap_audit_read") == CAP_AUDIT_READ);
+        assert_se(capability_from_name("cAp_aUdIt_rEAd") == CAP_AUDIT_READ);
+        assert_se(capability_from_name("0") == 0);
+        assert_se(capability_from_name("15") == 15);
+        assert_se(capability_from_name("-1") == -EINVAL);
+
+        for (i = 0; i < capability_list_length(); i++) {
+                _cleanup_cap_free_charp_ char *a = NULL;
+                const char *b;
+                unsigned u;
+
+                assert_se(a = cap_to_name(i));
+
+                /* quit the loop as soon as libcap starts returning
+                 * numeric ids, formatted as strings */
+                if (safe_atou(a, &u) >= 0)
+                        break;
+
+                assert_se(b = capability_to_name(i));
+
+                printf("%s vs. %s\n", a, b);
+
+                assert_se(strcasecmp(a, b) == 0);
+        }
+}
+
+/* verify cap_last_cap() against /proc/sys/kernel/cap_last_cap */
+static void test_last_cap_file(void) {
+        _cleanup_free_ char *content = NULL;
+        unsigned long val = 0;
+        int r;
+
+        r = read_one_line_file("/proc/sys/kernel/cap_last_cap", &content);
+        assert_se(r >= 0);
+
+        r = safe_atolu(content, &val);
+        assert_se(r >= 0);
+        assert_se(val != 0);
+        assert_se(val == cap_last_cap());
+}
+
+/* verify cap_last_cap() against syscall probing */
+static void test_last_cap_probe(void) {
+        unsigned long p = (unsigned long)CAP_LAST_CAP;
+
+        if (prctl(PR_CAPBSET_READ, p) < 0) {
+                for (p--; p > 0; p --)
+                        if (prctl(PR_CAPBSET_READ, p) >= 0)
+                                break;
+        } else {
+                for (;; p++)
+                        if (prctl(PR_CAPBSET_READ, p+1) < 0)
+                                break;
+        }
+
+        assert_se(p != 0);
+        assert_se(p == cap_last_cap());
+}
+
+int main(int argc, char *argv[]) {
+        test_cap_list();
+        test_last_cap_file();
+        test_last_cap_probe();
+
+        return 0;
+}