-/***
- This file is part of systemd.
-
- Copyright 2014 Ivan Shapovalov
-
- 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/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
#include <errno.h>
#include <stdio.h>
+#include <unistd.h>
#include "alloc-util.h"
#include "fstab-util.h"
+#include "generator.h"
#include "log.h"
+#include "main-func.h"
#include "mkdir.h"
#include "proc-cmdline.h"
#include "special.h"
#include "string-util.h"
#include "unit-name.h"
-#include "util.h"
static const char *arg_dest = "/tmp";
-static char *arg_resume_dev = NULL;
+static char *arg_resume_device = NULL;
+static char *arg_resume_options = NULL;
+static char *arg_root_options = NULL;
+static bool arg_noresume = false;
+
+STATIC_DESTRUCTOR_REGISTER(arg_resume_device, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_resume_options, freep);
+STATIC_DESTRUCTOR_REGISTER(arg_root_options, freep);
+
+static int parse_proc_cmdline_item(const char *key, const char *value, void *data) {
+
+ if (streq(key, "resume")) {
+ char *s;
+
+ if (proc_cmdline_value_missing(key, value))
+ return 0;
+
+ s = fstab_node_to_udev_node(value);
+ if (!s)
+ return log_oom();
+
+ free_and_replace(arg_resume_device, s);
+
+ } else if (streq(key, "resumeflags")) {
+
+ if (proc_cmdline_value_missing(key, value))
+ return 0;
+
+ if (!strextend_with_separator(&arg_resume_options, ",", value, NULL))
+ return log_oom();
-static int parse_proc_cmdline_item(const char *key, const char *value) {
+ } else if (streq(key, "rootflags")) {
- if (streq(key, "resume") && value) {
- free(arg_resume_dev);
- arg_resume_dev = fstab_node_to_udev_node(value);
- if (!arg_resume_dev)
+ if (proc_cmdline_value_missing(key, value))
+ return 0;
+
+ if (!strextend_with_separator(&arg_root_options, ",", value, NULL))
return log_oom();
+
+ } else if (streq(key, "noresume")) {
+ if (value) {
+ log_warning("\"noresume\" kernel command line switch specified with an argument, ignoring.");
+ return 0;
+ }
+
+ arg_noresume = true;
}
return 0;
static int process_resume(void) {
_cleanup_free_ char *name = NULL, *lnk = NULL;
+ const char *opts;
int r;
- if (!arg_resume_dev)
+ if (!arg_resume_device)
return 0;
- r = unit_name_from_path_instance("systemd-hibernate-resume", arg_resume_dev, ".service", &name);
+ r = unit_name_from_path_instance("systemd-hibernate-resume", arg_resume_device, ".service", &name);
if (r < 0)
return log_error_errno(r, "Failed to generate unit name: %m");
- lnk = strjoin(arg_dest, "/" SPECIAL_SYSINIT_TARGET ".wants/", name, NULL);
+ lnk = strjoin(arg_dest, "/" SPECIAL_SYSINIT_TARGET ".wants/", name);
if (!lnk)
return log_oom();
if (symlink(SYSTEM_DATA_UNIT_PATH "/systemd-hibernate-resume@.service", lnk) < 0)
return log_error_errno(errno, "Failed to create symlink %s: %m", lnk);
+ if (arg_resume_options)
+ opts = arg_resume_options;
+ else
+ opts = arg_root_options;
+
+ r = generator_write_timeouts(arg_dest, arg_resume_device, arg_resume_device, opts, NULL);
+ if (r < 0)
+ return r;
+
return 0;
}
-int main(int argc, char *argv[]) {
+static int run(int argc, char *argv[]) {
int r = 0;
- if (argc > 1 && argc != 4) {
- log_error("This program takes three or no arguments.");
- return EXIT_FAILURE;
- }
+ log_setup_generator();
+
+ if (argc > 1 && argc != 4)
+ return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
+ "This program takes three or no arguments.");
if (argc > 1)
arg_dest = argv[1];
- log_set_target(LOG_TARGET_SAFE);
- log_parse_environment();
- log_open();
-
- umask(0022);
-
/* Don't even consider resuming outside of initramfs. */
- if (!in_initrd())
- return EXIT_SUCCESS;
+ if (!in_initrd()) {
+ log_debug("Not running in an initrd, quitting.");
+ return 0;
+ }
- r = parse_proc_cmdline(parse_proc_cmdline_item);
+ 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");
- r = process_resume();
- free(arg_resume_dev);
+ if (arg_noresume) {
+ log_notice("Found \"noresume\" on the kernel command line, quitting.");
+ return 0;
+ }
- return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
+ return process_resume();
}
+
+DEFINE_MAIN_FUNCTION(run);
projects / thirdparty / systemd.git / blobdiff