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/* SPDX-License-Identifier: LGPL-2.1+ */
/***
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, void *data) {
if (streq(key, "quotacheck.mode")) {
if (proc_cmdline_value_missing(key, value))
return 0;
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);
}
#if 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) {
#if 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 = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
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) {
r = log_error_errno(errno, "fork(): %m");
goto finish;
}
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);
finish:
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}
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