/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <errno.h>
+#include <getopt.h>
#include <sys/stat.h>
+#include "build.h"
#include "devnum-util.h"
#include "hibernate-resume-config.h"
#include "hibernate-util.h"
#include "log.h"
#include "main-func.h"
#include "parse-util.h"
+#include "pretty-print.h"
#include "static-destruct.h"
+#include "terminal-util.h"
static HibernateInfo arg_info = {};
STATIC_DESTRUCTOR_REGISTER(arg_info, hibernate_info_done);
+static int help(void) {
+ _cleanup_free_ char *link = NULL;
+ int r;
+
+ r = terminal_urlify_man("systemd-hibernate-resume", "8", &link);
+ if (r < 0)
+ return log_oom();
+
+ printf("%s [OPTIONS...] [DEVICE [OFFSET]]\n"
+ "\n%sInitiate resume from hibernation.%s\n\n"
+ " -h --help Show this help\n"
+ " --version Show package version\n"
+ "\nSee the %s for details.\n",
+ program_invocation_short_name,
+ ansi_highlight(),
+ ansi_normal(),
+ link);
+
+ return 0;
+}
+
+static int parse_argv(int argc, char *argv[]) {
+
+ enum {
+ ARG_VERSION = 0x100,
+ };
+
+ static const struct option options[] = {
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
+ {}
+ };
+
+ int c;
+
+ assert(argc >= 0);
+ assert(argv);
+
+ while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
+
+ switch (c) {
+
+ case 'h':
+ return help();
+
+ case ARG_VERSION:
+ return version();
+
+ case '?':
+ return -EINVAL;
+
+ default:
+ assert_not_reached();
+ }
+
+ return 1;
+}
+
static int setup_hibernate_info_and_warn(void) {
int r;
log_setup();
- if (argc < 1 || argc > 3)
+ r = parse_argv(argc, argv);
+ if (r <= 0)
+ return r;
+
+ if (argc - optind > 2)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "This program expects zero, one, or two arguments.");
umask(0022);
if (!in_initrd())
return 0;
- if (argc > 1) {
- arg_info.device = argv[1];
-
- if (argc == 3) {
- r = safe_atou64(argv[2], &arg_info.offset);
- if (r < 0)
- return log_error_errno(r, "Failed to parse resume offset %s: %m", argv[2]);
- }
- } else {
+ if (argc <= optind) {
r = setup_hibernate_info_and_warn();
if (r <= 0)
return r;
if (arg_info.efi)
(void) clear_efi_hibernate_location_and_warn();
+ } else {
+ arg_info.device = ASSERT_PTR(argv[optind]);
+
+ if (argc - optind == 2) {
+ r = safe_atou64(argv[optind + 1], &arg_info.offset);
+ if (r < 0)
+ return log_error_errno(r, "Failed to parse resume offset %s: %m", argv[optind + 1]);
+ }
}
if (stat(arg_info.device, &st) < 0)