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Pass log config from systemd to systemd-shutdown
If PID 1 debug logging is enabled, it is nice to keep those settings when switching to systemd-shutdown binary, independently of whether this was done through /proc/cmdline options, or through runtime manipulations.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek
parent
fb4729006a
commit
b1e90ec515
@ -1881,14 +1881,42 @@ finish:
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#endif
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if (shutdown_verb) {
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const char * command_line[] = {
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char log_level[DECIMAL_STR_MAX(int) + 1];
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const char* command_line[9] = {
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SYSTEMD_SHUTDOWN_BINARY_PATH,
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shutdown_verb,
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NULL
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"--log-level", log_level,
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"--log-target",
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};
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unsigned pos = 5;
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assert(command_line[pos] == NULL);
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_cleanup_strv_free_ char **env_block = NULL;
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env_block = strv_copy(environ);
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snprintf(log_level, sizeof(log_level), "%d", log_get_max_level());
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switch (log_get_target()) {
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case LOG_TARGET_KMSG:
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case LOG_TARGET_JOURNAL_OR_KMSG:
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case LOG_TARGET_SYSLOG_OR_KMSG:
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command_line[pos++] = "kmsg";
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break;
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case LOG_TARGET_CONSOLE:
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default:
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command_line[pos++] = "console";
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break;
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};
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if (log_get_show_color())
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command_line[pos++] = "--log-color";
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if (log_get_show_location())
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command_line[pos++] = "--log-location";
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assert(pos + 1 < ELEMENTSOF(command_line));
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if (arm_reboot_watchdog && arg_shutdown_watchdog > 0) {
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char *e;
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@ -1911,7 +1939,8 @@ finish:
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cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
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execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
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log_error("Failed to execute shutdown binary, freezing: %m");
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log_error("Failed to execute shutdown binary, %s: %m",
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getpid() == 1 ? "freezing" : "quitting");
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}
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if (getpid() == 1)
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@ -35,6 +35,7 @@
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#include <stdbool.h>
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#include <stdlib.h>
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#include <string.h>
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#include <getopt.h>
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#include "missing.h"
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#include "log.h"
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@ -50,6 +51,93 @@
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#define FINALIZE_ATTEMPTS 50
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static char* arg_verb;
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static int parse_argv(int argc, char *argv[]) {
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enum {
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ARG_LOG_LEVEL = 0x100,
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ARG_LOG_TARGET,
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ARG_LOG_COLOR,
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ARG_LOG_LOCATION,
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};
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static const struct option options[] = {
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{ "log-level", required_argument, NULL, ARG_LOG_LEVEL },
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{ "log-target", required_argument, NULL, ARG_LOG_TARGET },
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{ "log-color", optional_argument, NULL, ARG_LOG_COLOR },
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{ "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
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{}
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};
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int c, r;
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assert(argc >= 1);
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assert(argv);
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opterr = 0;
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while ((c = getopt_long(argc, argv, ":", options, NULL)) >= 0)
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switch (c) {
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case ARG_LOG_LEVEL:
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r = log_set_max_level_from_string(optarg);
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if (r < 0)
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log_error("Failed to parse log level %s, ignoring.", optarg);
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break;
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case ARG_LOG_TARGET:
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r = log_set_target_from_string(optarg);
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if (r < 0)
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log_error("Failed to parse log target %s, ignoring", optarg);
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break;
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case ARG_LOG_COLOR:
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if (optarg) {
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r = log_show_color_from_string(optarg);
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if (r < 0)
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log_error("Failed to parse log color setting %s, ignoring", optarg);
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} else
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log_show_color(true);
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break;
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case ARG_LOG_LOCATION:
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if (optarg) {
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r = log_show_location_from_string(optarg);
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if (r < 0)
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log_error("Failed to parse log location setting %s, ignoring", optarg);
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} else
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log_show_location(true);
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break;
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case '?':
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log_error("Unknown option %s.", argv[optind-1]);
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return -EINVAL;
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case ':':
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log_error("Missing argument to %s.", argv[optind-1]);
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option code.");
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}
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if (optind >= argc) {
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log_error("Verb argument missing.");
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return -EINVAL;
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}
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arg_verb = argv[optind];
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if (optind + 1 < argc)
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log_error("Excess arguments, ignoring");
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return 0;
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}
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static int prepare_new_root(void) {
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static const char dirs[] =
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"/run/initramfs/oldroot\0"
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@ -139,52 +227,38 @@ int main(int argc, char *argv[]) {
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unsigned retries;
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int cmd, r;
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/* suppress shutdown status output if 'quiet' is used */
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r = proc_cmdline(&line);
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if (r > 0) {
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char *w, *state;
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size_t l;
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FOREACH_WORD_QUOTED(w, l, line, state) {
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if (l == 5 && memcmp(w, "quiet", 5) == 0) {
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log_set_max_level(LOG_WARNING);
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break;
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}
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}
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}
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log_parse_environment();
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log_set_target(LOG_TARGET_CONSOLE); /* syslog will die if not gone yet */
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r = parse_argv(argc, argv);
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if (r < 0)
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goto error;
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/* journald will die if not gone yet. The log target defaults
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* to console, but may have been changed by commandline options. */
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log_close_console(); /* force reopen of /dev/console */
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log_open();
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umask(0022);
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if (getpid() != 1) {
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log_error("Not executed by init (pid 1).");
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log_error("Not executed by init (PID 1).");
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r = -EPERM;
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goto error;
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}
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if (argc != 2) {
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log_error("Invalid number of arguments.");
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r = -EINVAL;
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goto error;
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}
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in_container = detect_container(NULL) > 0;
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if (streq(argv[1], "reboot"))
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if (streq(arg_verb, "reboot"))
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cmd = RB_AUTOBOOT;
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else if (streq(argv[1], "poweroff"))
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else if (streq(arg_verb, "poweroff"))
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cmd = RB_POWER_OFF;
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else if (streq(argv[1], "halt"))
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else if (streq(arg_verb, "halt"))
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cmd = RB_HALT_SYSTEM;
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else if (streq(argv[1], "kexec"))
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else if (streq(arg_verb, "kexec"))
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cmd = LINUX_REBOOT_CMD_KEXEC;
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else {
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log_error("Unknown action '%s'.", argv[1]);
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r = -EINVAL;
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log_error("Unknown action '%s'.", arg_verb);
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goto error;
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}
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@ -292,7 +366,7 @@ int main(int argc, char *argv[]) {
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log_info("Storage is finalized.");
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arguments[0] = NULL;
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arguments[1] = argv[1];
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arguments[1] = arg_verb;
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arguments[2] = NULL;
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execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, arguments);
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@ -301,10 +375,11 @@ int main(int argc, char *argv[]) {
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if (prepare_new_root() >= 0 &&
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pivot_to_new_root() >= 0) {
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arguments[0] = (char*) "/shutdown";
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log_info("Returning to initrd...");
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execv("/shutdown", argv);
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execv("/shutdown", arguments);
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log_error("Failed to execute shutdown binary: %m");
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}
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}
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@ -389,5 +464,4 @@ int main(int argc, char *argv[]) {
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log_error("Critical error while doing system shutdown: %s", strerror(-r));
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freeze();
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return EXIT_FAILURE;
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}
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@ -927,10 +927,18 @@ void log_show_color(bool b) {
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show_color = b;
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}
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bool log_get_show_color(void) {
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return show_color;
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}
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void log_show_location(bool b) {
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show_location = b;
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}
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bool log_get_show_location(void) {
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return show_location;
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}
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int log_show_color_from_string(const char *e) {
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int t;
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@ -52,7 +52,9 @@ int log_set_target_from_string(const char *e);
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int log_set_max_level_from_string(const char *e);
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void log_show_color(bool b);
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bool log_get_show_color(void) _pure_;
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void log_show_location(bool b);
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bool log_get_show_location(void) _pure_;
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int log_show_color_from_string(const char *e);
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int log_show_location_from_string(const char *e);
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