34c10968cb
Introduce a new configuration file /etc/systemd/coredump.conf to configure when to place coredumps in the journal and when on disk. Since the coredumps are quite large, default to storing them only on disk.
225 lines
6.2 KiB
C
225 lines
6.2 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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Copyright 2013 Zbigniew Jędrzejewski-Szmek
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#include <getopt.h>
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#include "sd-id128.h"
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#include "sd-messages.h"
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#include "log.h"
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#include "util.h"
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#include "strv.h"
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#include "fileio.h"
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#include "build.h"
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#include "sleep-config.h"
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#include "def.h"
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static char* arg_verb = NULL;
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static int write_mode(char **modes) {
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int r = 0;
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char **mode;
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STRV_FOREACH(mode, modes) {
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int k;
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k = write_string_file("/sys/power/disk", *mode);
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if (k == 0)
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return 0;
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log_debug("Failed to write '%s' to /sys/power/disk: %s",
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*mode, strerror(-k));
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if (r == 0)
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r = k;
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}
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if (r < 0)
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log_error("Failed to write mode to /sys/power/disk: %s",
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strerror(-r));
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return r;
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}
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static int write_state(FILE **f, char **states) {
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char **state;
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int r = 0;
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STRV_FOREACH(state, states) {
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int k;
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k = write_string_to_file(*f, *state);
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if (k == 0)
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return 0;
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log_debug("Failed to write '%s' to /sys/power/state: %s",
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*state, strerror(-k));
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if (r == 0)
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r = k;
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fclose(*f);
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*f = fopen("/sys/power/state", "we");
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if (!*f) {
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log_error("Failed to open /sys/power/state: %m");
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return -errno;
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}
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}
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return r;
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}
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static int execute(char **modes, char **states) {
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char* arguments[4];
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int r;
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_cleanup_fclose_ FILE *f = NULL;
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const char* note = strappenda("SLEEP=", arg_verb);
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/* This file is opened first, so that if we hit an error,
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* we can abort before modifying any state. */
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f = fopen("/sys/power/state", "we");
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if (!f) {
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log_error("Failed to open /sys/power/state: %m");
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return -errno;
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}
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/* Configure the hibernation mode */
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r = write_mode(modes);
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if (r < 0)
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return r;
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arguments[0] = NULL;
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arguments[1] = (char*) "pre";
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arguments[2] = arg_verb;
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arguments[3] = NULL;
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execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
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log_struct(LOG_INFO,
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MESSAGE_ID(SD_MESSAGE_SLEEP_START),
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"MESSAGE=Suspending system...",
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note,
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NULL);
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r = write_state(&f, states);
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if (r < 0)
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return r;
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log_struct(LOG_INFO,
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MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
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"MESSAGE=System resumed.",
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note,
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NULL);
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arguments[1] = (char*) "post";
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execute_directory(SYSTEM_SLEEP_PATH, NULL, DEFAULT_TIMEOUT_USEC, arguments);
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return r;
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}
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static int help(void) {
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printf("%s COMMAND\n\n"
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"Suspend the system, hibernate the system, or both.\n\n"
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"Commands:\n"
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" -h --help Show this help and exit\n"
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" --version Print version string and exit\n"
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" suspend Suspend the system\n"
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" hibernate Hibernate the system\n"
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" hybrid-sleep Both hibernate and suspend the system\n"
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, program_invocation_short_name
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);
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return 0;
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}
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_VERSION = 0x100,
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};
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, ARG_VERSION },
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{}
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};
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int c;
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assert(argc >= 0);
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assert(argv);
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while ((c = getopt_long(argc, argv, "+h", options, NULL)) >= 0)
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switch(c) {
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case 'h':
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return help();
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case ARG_VERSION:
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puts(PACKAGE_STRING);
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puts(SYSTEMD_FEATURES);
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return 0 /* done */;
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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if (argc - optind != 1) {
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log_error("Usage: %s COMMAND",
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program_invocation_short_name);
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return -EINVAL;
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}
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arg_verb = argv[optind];
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if (!streq(arg_verb, "suspend") &&
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!streq(arg_verb, "hibernate") &&
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!streq(arg_verb, "hybrid-sleep")) {
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log_error("Unknown command '%s'.", arg_verb);
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return -EINVAL;
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}
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return 1 /* work to do */;
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}
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int main(int argc, char *argv[]) {
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_cleanup_strv_free_ char **modes = NULL, **states = NULL;
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int r;
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log_set_target(LOG_TARGET_AUTO);
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log_parse_environment();
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log_open();
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r = parse_argv(argc, argv);
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if (r <= 0)
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goto finish;
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r = parse_sleep_config(arg_verb, &modes, &states);
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if (r < 0)
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goto finish;
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r = execute(modes, states);
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finish:
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return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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