summaryrefslogtreecommitdiff
path: root/src/systemd-quotacheck/quotacheck.c
diff options
context:
space:
mode:
authorLuke Shumaker <lukeshu@sbcglobal.net>2016-06-12 18:21:06 -0400
committerLuke Shumaker <lukeshu@sbcglobal.net>2016-06-12 18:21:06 -0400
commitba0b7413cf3e34eac57de84043f6be2ed5025a84 (patch)
tree50c91fff0d7182eff31fa610de10b25242069bc0 /src/systemd-quotacheck/quotacheck.c
parent519b1e985b2dec67522be81621b2ce2b6350ee70 (diff)
./move.sh
Diffstat (limited to 'src/systemd-quotacheck/quotacheck.c')
-rw-r--r--src/systemd-quotacheck/quotacheck.c124
1 files changed, 124 insertions, 0 deletions
diff --git a/src/systemd-quotacheck/quotacheck.c b/src/systemd-quotacheck/quotacheck.c
new file mode 100644
index 0000000000..6d8c05f046
--- /dev/null
+++ b/src/systemd-quotacheck/quotacheck.c
@@ -0,0 +1,124 @@
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <sys/prctl.h>
+#include <unistd.h>
+
+#include "proc-cmdline.h"
+#include "process-util.h"
+#include "signal-util.h"
+#include "string-util.h"
+#include "util.h"
+
+static bool arg_skip = false;
+static bool arg_force = false;
+
+static int parse_proc_cmdline_item(const char *key, const char *value) {
+
+ if (streq(key, "quotacheck.mode") && value) {
+
+ if (streq(value, "auto"))
+ arg_force = arg_skip = false;
+ else if (streq(value, "force"))
+ arg_force = true;
+ else if (streq(value, "skip"))
+ arg_skip = true;
+ else
+ log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value);
+ }
+
+#ifdef HAVE_SYSV_COMPAT
+ else if (streq(key, "forcequotacheck") && !value) {
+ log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line.");
+ arg_force = true;
+ }
+#endif
+
+ return 0;
+}
+
+static void test_files(void) {
+
+#ifdef HAVE_SYSV_COMPAT
+ if (access("/forcequotacheck", F_OK) >= 0) {
+ log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system.");
+ arg_force = true;
+ }
+#endif
+}
+
+int main(int argc, char *argv[]) {
+
+ static const char * const cmdline[] = {
+ QUOTACHECK,
+ "-anug",
+ NULL
+ };
+
+ pid_t pid;
+ int r;
+
+ if (argc > 1) {
+ log_error("This program takes no arguments.");
+ return EXIT_FAILURE;
+ }
+
+ log_set_target(LOG_TARGET_AUTO);
+ log_parse_environment();
+ log_open();
+
+ umask(0022);
+
+ r = parse_proc_cmdline(parse_proc_cmdline_item);
+ if (r < 0)
+ log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
+
+ test_files();
+
+ if (!arg_force) {
+ if (arg_skip)
+ return EXIT_SUCCESS;
+
+ if (access("/run/systemd/quotacheck", F_OK) < 0)
+ return EXIT_SUCCESS;
+ }
+
+ pid = fork();
+ if (pid < 0) {
+ log_error_errno(errno, "fork(): %m");
+ return EXIT_FAILURE;
+ } else if (pid == 0) {
+
+ /* Child */
+
+ (void) reset_all_signal_handlers();
+ (void) reset_signal_mask();
+ assert_se(prctl(PR_SET_PDEATHSIG, SIGTERM) == 0);
+
+ execv(cmdline[0], (char**) cmdline);
+ _exit(1); /* Operational error */
+ }
+
+ r = wait_for_terminate_and_warn("quotacheck", pid, true);
+
+ return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+}