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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-02-15 18:13:46 -0500
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2014-02-17 02:26:22 -0500
commitb1e90ec515408aec2702522f6f68c4920b56375b (patch)
treea00ecbc44f5f762d064219fe0b4c71290cd7d364 /src/core/shutdown.c
parentfb4729006a7174472e8a435b0887e532cd6217fc (diff)
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.
Diffstat (limited to 'src/core/shutdown.c')
-rw-r--r--src/core/shutdown.c132
1 files changed, 103 insertions, 29 deletions
diff --git a/src/core/shutdown.c b/src/core/shutdown.c
index 8420a67535..9189cfb1ad 100644
--- a/src/core/shutdown.c
+++ b/src/core/shutdown.c
@@ -35,6 +35,7 @@
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
+#include <getopt.h>
#include "missing.h"
#include "log.h"
@@ -50,6 +51,93 @@
#define FINALIZE_ATTEMPTS 50
+static char* arg_verb;
+
+static int parse_argv(int argc, char *argv[]) {
+ enum {
+ ARG_LOG_LEVEL = 0x100,
+ ARG_LOG_TARGET,
+ ARG_LOG_COLOR,
+ ARG_LOG_LOCATION,
+ };
+
+ static const struct option options[] = {
+ { "log-level", required_argument, NULL, ARG_LOG_LEVEL },
+ { "log-target", required_argument, NULL, ARG_LOG_TARGET },
+ { "log-color", optional_argument, NULL, ARG_LOG_COLOR },
+ { "log-location", optional_argument, NULL, ARG_LOG_LOCATION },
+ {}
+ };
+
+ int c, r;
+
+ assert(argc >= 1);
+ assert(argv);
+
+ opterr = 0;
+
+ while ((c = getopt_long(argc, argv, ":", options, NULL)) >= 0)
+ switch (c) {
+
+ case ARG_LOG_LEVEL:
+ r = log_set_max_level_from_string(optarg);
+ if (r < 0)
+ log_error("Failed to parse log level %s, ignoring.", optarg);
+
+ break;
+
+ case ARG_LOG_TARGET:
+ r = log_set_target_from_string(optarg);
+ if (r < 0)
+ log_error("Failed to parse log target %s, ignoring", optarg);
+
+ break;
+
+ case ARG_LOG_COLOR:
+
+ if (optarg) {
+ r = log_show_color_from_string(optarg);
+ if (r < 0)
+ log_error("Failed to parse log color setting %s, ignoring", optarg);
+ } else
+ log_show_color(true);
+
+ break;
+
+ case ARG_LOG_LOCATION:
+ if (optarg) {
+ r = log_show_location_from_string(optarg);
+ if (r < 0)
+ log_error("Failed to parse log location setting %s, ignoring", optarg);
+ } else
+ log_show_location(true);
+
+ break;
+
+ case '?':
+ log_error("Unknown option %s.", argv[optind-1]);
+ return -EINVAL;
+
+ case ':':
+ log_error("Missing argument to %s.", argv[optind-1]);
+ return -EINVAL;
+
+ default:
+ assert_not_reached("Unhandled option code.");
+ }
+
+ if (optind >= argc) {
+ log_error("Verb argument missing.");
+ return -EINVAL;
+ }
+
+ arg_verb = argv[optind];
+
+ if (optind + 1 < argc)
+ log_error("Excess arguments, ignoring");
+ return 0;
+}
+
static int prepare_new_root(void) {
static const char dirs[] =
"/run/initramfs/oldroot\0"
@@ -139,52 +227,38 @@ int main(int argc, char *argv[]) {
unsigned retries;
int cmd, r;
- /* suppress shutdown status output if 'quiet' is used */
- r = proc_cmdline(&line);
- if (r > 0) {
- char *w, *state;
- size_t l;
+ log_parse_environment();
+ r = parse_argv(argc, argv);
+ if (r < 0)
+ goto error;
- FOREACH_WORD_QUOTED(w, l, line, state) {
- if (l == 5 && memcmp(w, "quiet", 5) == 0) {
- log_set_max_level(LOG_WARNING);
- break;
- }
- }
- }
+ /* journald will die if not gone yet. The log target defaults
+ * to console, but may have been changed by commandline options. */
- log_parse_environment();
- log_set_target(LOG_TARGET_CONSOLE); /* syslog will die if not gone yet */
log_close_console(); /* force reopen of /dev/console */
log_open();
umask(0022);
if (getpid() != 1) {
- log_error("Not executed by init (pid 1).");
+ log_error("Not executed by init (PID 1).");
r = -EPERM;
goto error;
}
- if (argc != 2) {
- log_error("Invalid number of arguments.");
- r = -EINVAL;
- goto error;
- }
-
in_container = detect_container(NULL) > 0;
- if (streq(argv[1], "reboot"))
+ if (streq(arg_verb, "reboot"))
cmd = RB_AUTOBOOT;
- else if (streq(argv[1], "poweroff"))
+ else if (streq(arg_verb, "poweroff"))
cmd = RB_POWER_OFF;
- else if (streq(argv[1], "halt"))
+ else if (streq(arg_verb, "halt"))
cmd = RB_HALT_SYSTEM;
- else if (streq(argv[1], "kexec"))
+ else if (streq(arg_verb, "kexec"))
cmd = LINUX_REBOOT_CMD_KEXEC;
else {
- log_error("Unknown action '%s'.", argv[1]);
r = -EINVAL;
+ log_error("Unknown action '%s'.", arg_verb);
goto error;
}
@@ -292,7 +366,7 @@ int main(int argc, char *argv[]) {
log_info("Storage is finalized.");
arguments[0] = NULL;
- arguments[1] = argv[1];
+ arguments[1] = arg_verb;
arguments[2] = NULL;
execute_directory(SYSTEM_SHUTDOWN_PATH, NULL, arguments);
@@ -301,10 +375,11 @@ int main(int argc, char *argv[]) {
if (prepare_new_root() >= 0 &&
pivot_to_new_root() >= 0) {
+ arguments[0] = (char*) "/shutdown";
log_info("Returning to initrd...");
- execv("/shutdown", argv);
+ execv("/shutdown", arguments);
log_error("Failed to execute shutdown binary: %m");
}
}
@@ -389,5 +464,4 @@ int main(int argc, char *argv[]) {
log_error("Critical error while doing system shutdown: %s", strerror(-r));
freeze();
- return EXIT_FAILURE;
}