103 lines
2.8 KiB
C
103 lines
2.8 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#include <errno.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sys/prctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "main-func.h"
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#include "proc-cmdline.h"
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#include "process-util.h"
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#include "signal-util.h"
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#include "string-util.h"
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#include "util.h"
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static bool arg_skip = false;
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static bool arg_force = false;
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static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
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if (streq(key, "quotacheck.mode")) {
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if (proc_cmdline_value_missing(key, value))
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return 0;
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if (streq(value, "auto"))
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arg_force = arg_skip = false;
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else if (streq(value, "force"))
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arg_force = true;
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else if (streq(value, "skip"))
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arg_skip = true;
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else
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log_warning("Invalid quotacheck.mode= parameter '%s'. Ignoring.", value);
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}
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#if HAVE_SYSV_COMPAT
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else if (streq(key, "forcequotacheck") && !value) {
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log_warning("Please use 'quotacheck.mode=force' rather than 'forcequotacheck' on the kernel command line.");
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arg_force = true;
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}
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#endif
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return 0;
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}
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static void test_files(void) {
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#if HAVE_SYSV_COMPAT
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if (access("/forcequotacheck", F_OK) >= 0) {
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log_error("Please pass 'quotacheck.mode=force' on the kernel command line rather than creating /forcequotacheck on the root file system.");
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arg_force = true;
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}
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#endif
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}
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static int run(int argc, char *argv[]) {
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int r;
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log_setup_service();
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if (argc > 1)
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return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
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"This program takes no arguments.");
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umask(0022);
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r = proc_cmdline_parse(parse_proc_cmdline_item, NULL, 0);
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if (r < 0)
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log_warning_errno(r, "Failed to parse kernel command line, ignoring: %m");
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test_files();
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if (!arg_force) {
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if (arg_skip)
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return 0;
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if (access("/run/systemd/quotacheck", F_OK) < 0)
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return 0;
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}
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r = safe_fork("(quotacheck)", FORK_RESET_SIGNALS|FORK_DEATHSIG|FORK_RLIMIT_NOFILE_SAFE|FORK_WAIT|FORK_LOG, NULL);
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if (r < 0)
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return r;
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if (r == 0) {
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static const char * const cmdline[] = {
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QUOTACHECK,
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"-anug",
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NULL
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};
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/* Child */
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execv(cmdline[0], (char**) cmdline);
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_exit(EXIT_FAILURE); /* Operational error */
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}
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return 0;
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}
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DEFINE_MAIN_FUNCTION(run);
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