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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
#include <stdbool.h>
#include <stdio.h>
#include <sys/prctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include "main-func.h"
#include "proc-cmdline.h"
#include "process-util.h"
#include "signal-util.h"
#include "string-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
}
static int run(int argc, char *argv[]) {
int r;
log_setup();
if (argc > 1)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"This program takes no arguments.");
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 0;
if (access("/run/systemd/quotacheck", F_OK) < 0)
return 0;
}
r = safe_fork("(quotacheck)", FORK_RESET_SIGNALS|FORK_DEATHSIG_SIGTERM|FORK_RLIMIT_NOFILE_SAFE|FORK_WAIT|FORK_LOG, NULL);
if (r < 0)
return r;
if (r == 0) {
static const char * const cmdline[] = {
QUOTACHECK,
"-anug",
NULL
};
/* Child */
execv(cmdline[0], (char**) cmdline);
_exit(EXIT_FAILURE); /* Operational error */
}
return 0;
}
DEFINE_MAIN_FUNCTION(run);
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