#include <sys/wait.h>
#include <fcntl.h>
#include <sys/prctl.h>
+#include <sys/mount.h>
#include "manager.h"
#include "log.h"
#include "def.h"
#include "virt.h"
#include "watchdog.h"
+#include "path-util.h"
+#include "switch-root.h"
+#include "capability.h"
+#include "killall.h"
#include "mount-setup.h"
#include "loopback-setup.h"
static enum {
ACTION_RUN,
ACTION_HELP,
+ ACTION_VERSION,
ACTION_TEST,
ACTION_DUMP_CONFIGURATION_ITEMS,
ACTION_DONE
} arg_action = ACTION_RUN;
static char *arg_default_unit = NULL;
-static ManagerRunningAs arg_running_as = _MANAGER_RUNNING_AS_INVALID;
+static SystemdRunningAs arg_running_as = _SYSTEMD_RUNNING_AS_INVALID;
static bool arg_dump_core = true;
static bool arg_crash_shell = false;
static int arg_crash_chvt = -1;
static bool arg_confirm_spawn = false;
static bool arg_show_status = true;
-#ifdef HAVE_SYSV_COMPAT
-static bool arg_sysv_console = true;
-#endif
+static bool arg_switched_root = false;
static char **arg_default_controllers = NULL;
static char ***arg_join_controllers = NULL;
static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL;
static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
static usec_t arg_runtime_watchdog = 0;
static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
+static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {};
+static uint64_t arg_capability_bounding_set_drop = 0;
+static nsec_t arg_timer_slack_nsec = (nsec_t) -1;
static FILE* serialization = NULL;
sa.sa_flags = SA_NOCLDSTOP|SA_NOCLDWAIT|SA_RESTART;
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
- if ((pid = fork()) < 0)
- log_error("Failed to fork off crash shell: %s", strerror(errno));
+ pid = fork();
+ if (pid < 0)
+ log_error("Failed to fork off crash shell: %m");
else if (pid == 0) {
- int fd, r;
-
- if ((fd = acquire_terminal("/dev/console", false, true, true)) < 0)
- log_error("Failed to acquire terminal: %s", strerror(-fd));
- else if ((r = make_stdio(fd)) < 0)
- log_error("Failed to duplicate terminal fd: %s", strerror(-r));
-
+ make_console_stdio();
execl("/bin/sh", "/bin/sh", NULL);
- log_error("execl() failed: %s", strerror(errno));
+ log_error("execl() failed: %m");
_exit(1);
}
assert(u);
- if (!(c = strdup(u)))
+ c = strdup(u);
+ if (!c)
return -ENOMEM;
free(arg_default_unit);
arg_default_unit = c;
+
return 0;
}
assert(word);
- if (startswith(word, "systemd.unit="))
- return set_default_unit(word + 13);
+ if (startswith(word, "systemd.unit=")) {
+
+ if (!in_initrd())
+ return set_default_unit(word + 13);
+
+ } else if (startswith(word, "rd.systemd.unit=")) {
- else if (startswith(word, "systemd.log_target=")) {
+ if (in_initrd())
+ return set_default_unit(word + 16);
+
+ } else if (startswith(word, "systemd.log_target=")) {
if (log_set_target_from_string(word + 19) < 0)
log_warning("Failed to parse log target %s. Ignoring.", word + 19);
if (!eq) {
r = unsetenv(cenv);
if (r < 0)
- log_warning("unsetenv failed %s. Ignoring.", strerror(errno));
+ log_warning("unsetenv failed %m. Ignoring.");
} else {
*eq = 0;
r = setenv(cenv, eq + 1, 1);
if (r < 0)
- log_warning("setenv failed %s. Ignoring.", strerror(errno));
+ log_warning("setenv failed %m. Ignoring.");
}
free(cenv);
-#ifdef HAVE_SYSV_COMPAT
- } else if (startswith(word, "systemd.sysv_console=")) {
- int r;
- if ((r = parse_boolean(word + 21)) < 0)
- log_warning("Failed to parse SysV console switch %s. Ignoring.", word + 20);
- else
- arg_sysv_console = r;
-#endif
-
- } else if (startswith(word, "systemd.")) {
+ } else if (startswith(word, "systemd.") ||
+ (in_initrd() && startswith(word, "rd.systemd."))) {
log_warning("Unknown kernel switch %s. Ignoring.", word);
log_info("Supported kernel switches:\n"
"systemd.unit=UNIT Default unit to start\n"
+ "rd.systemd.unit=UNIT Default unit to start when run in initrd\n"
"systemd.dump_core=0|1 Dump core on crash\n"
"systemd.crash_shell=0|1 Run shell on crash\n"
"systemd.crash_chvt=N Change to VT #N on crash\n"
"systemd.confirm_spawn=0|1 Confirm every process spawn\n"
"systemd.show_status=0|1 Show status updates on the console during bootup\n"
-#ifdef HAVE_SYSV_COMPAT
- "systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
-#endif
"systemd.log_target=console|kmsg|journal|journal-or-kmsg|syslog|syslog-or-kmsg|null\n"
" Log target\n"
"systemd.log_level=LEVEL Log level\n"
"systemd.default_standard_output=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
" Set default log output for services\n"
"systemd.default_standard_error=null|tty|syslog|syslog+console|kmsg|kmsg+console|journal|journal+console\n"
- " Set default log error output for services\n");
+ " Set default log error output for services\n"
+ "systemd.setenv=ASSIGNMENT Set an environment variable for all spawned processes\n");
- } else if (streq(word, "quiet")) {
+ } else if (streq(word, "quiet"))
arg_show_status = false;
-#ifdef HAVE_SYSV_COMPAT
- arg_sysv_console = false;
-#endif
- } else {
+ else if (!in_initrd()) {
unsigned i;
/* SysV compatibility */
unsigned cpu;
if (!(t = strndup(w, l)))
- return -ENOMEM;
+ return log_oom();
r = safe_atou(t, &cpu);
free(t);
if (!c)
if (!(c = cpu_set_malloc(&ncpus)))
- return -ENOMEM;
+ return log_oom();
if (r < 0 || cpu >= ncpus) {
log_error("[%s:%u] Failed to parse CPU affinity: %s", filename, line, rvalue);
s = strndup(w, length);
if (!s)
- return -ENOMEM;
+ return log_oom();
l = strv_split(s, ",");
free(s);
arg_join_controllers = new(char**, 2);
if (!arg_join_controllers) {
strv_free(l);
- return -ENOMEM;
+ return log_oom();
}
arg_join_controllers[0] = l;
t = new0(char**, n+2);
if (!t) {
strv_free(l);
- return -ENOMEM;
+ return log_oom();
}
n = 0;
if (!c) {
strv_free(l);
strv_free_free(t);
- return -ENOMEM;
+ return log_oom();
}
strv_free(l);
if (!c) {
strv_free(l);
strv_free_free(t);
- return -ENOMEM;
+ return log_oom();
}
t[n++] = c;
{ "Manager", "DumpCore", config_parse_bool, 0, &arg_dump_core },
{ "Manager", "CrashShell", config_parse_bool, 0, &arg_crash_shell },
{ "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
-#ifdef HAVE_SYSV_COMPAT
- { "Manager", "SysVConsole", config_parse_bool, 0, &arg_sysv_console },
-#endif
{ "Manager", "CrashChVT", config_parse_int, 0, &arg_crash_chvt },
{ "Manager", "CPUAffinity", config_parse_cpu_affinity2, 0, NULL },
{ "Manager", "DefaultControllers", config_parse_strv, 0, &arg_default_controllers },
{ "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
{ "Manager", "RuntimeWatchdogSec", config_parse_usec, 0, &arg_runtime_watchdog },
{ "Manager", "ShutdownWatchdogSec", config_parse_usec, 0, &arg_shutdown_watchdog },
+ { "Manager", "CapabilityBoundingSet", config_parse_bounding_set, 0, &arg_capability_bounding_set_drop },
+ { "Manager", "TimerSlackNSec", config_parse_nsec, 0, &arg_timer_slack_nsec },
+ { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]},
+ { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]},
+ { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]},
+ { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]},
+ { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]},
+ { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]},
+ { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]},
+ { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]},
+ { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]},
+ { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]},
+ { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]},
+ { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]},
+ { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]},
+ { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]},
+ { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]},
+ { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]},
{ NULL, NULL, NULL, 0, NULL }
};
const char *fn;
int r;
- fn = arg_running_as == MANAGER_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
+ fn = arg_running_as == SYSTEMD_SYSTEM ? SYSTEM_CONFIG_FILE : USER_CONFIG_FILE;
f = fopen(fn, "re");
if (!f) {
if (errno == ENOENT)
}
r = parse_proc_cmdline_word(word);
- free(word);
-
- if (r < 0)
+ if (r < 0) {
+ log_error("Failed on cmdline argument %s: %s", word, strerror(-r));
+ free(word);
goto finish;
+ }
+
+ free(word);
}
r = 0;
ARG_SYSTEM,
ARG_USER,
ARG_TEST,
+ ARG_VERSION,
ARG_DUMP_CONFIGURATION_ITEMS,
ARG_DUMP_CORE,
ARG_CRASH_SHELL,
ARG_CONFIRM_SPAWN,
ARG_SHOW_STATUS,
- ARG_SYSV_CONSOLE,
ARG_DESERIALIZE,
+ ARG_SWITCHED_ROOT,
ARG_INTROSPECT,
ARG_DEFAULT_STD_OUTPUT,
ARG_DEFAULT_STD_ERROR
{ "user", no_argument, NULL, ARG_USER },
{ "test", no_argument, NULL, ARG_TEST },
{ "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, ARG_VERSION },
{ "dump-configuration-items", no_argument, NULL, ARG_DUMP_CONFIGURATION_ITEMS },
{ "dump-core", optional_argument, NULL, ARG_DUMP_CORE },
{ "crash-shell", optional_argument, NULL, ARG_CRASH_SHELL },
{ "confirm-spawn", optional_argument, NULL, ARG_CONFIRM_SPAWN },
{ "show-status", optional_argument, NULL, ARG_SHOW_STATUS },
-#ifdef HAVE_SYSV_COMPAT
- { "sysv-console", optional_argument, NULL, ARG_SYSV_CONSOLE },
-#endif
{ "deserialize", required_argument, NULL, ARG_DESERIALIZE },
+ { "switched-root", no_argument, NULL, ARG_SWITCHED_ROOT },
{ "introspect", optional_argument, NULL, ARG_INTROSPECT },
{ "default-standard-output", required_argument, NULL, ARG_DEFAULT_STD_OUTPUT, },
{ "default-standard-error", required_argument, NULL, ARG_DEFAULT_STD_ERROR, },
break;
case ARG_SYSTEM:
- arg_running_as = MANAGER_SYSTEM;
+ arg_running_as = SYSTEMD_SYSTEM;
break;
case ARG_USER:
- arg_running_as = MANAGER_USER;
+ arg_running_as = SYSTEMD_USER;
break;
case ARG_TEST:
arg_action = ACTION_TEST;
break;
+ case ARG_VERSION:
+ arg_action = ACTION_VERSION;
+ break;
+
case ARG_DUMP_CONFIGURATION_ITEMS:
arg_action = ACTION_DUMP_CONFIGURATION_ITEMS;
break;
arg_show_status = r;
break;
-#ifdef HAVE_SYSV_COMPAT
- case ARG_SYSV_CONSOLE:
- r = optarg ? parse_boolean(optarg) : 1;
- if (r < 0) {
- log_error("Failed to parse SysV console boolean %s.", optarg);
- return r;
- }
- arg_sysv_console = r;
- break;
-#endif
-
case ARG_DESERIALIZE: {
int fd;
FILE *f;
break;
}
+ case ARG_SWITCHED_ROOT:
+ arg_switched_root = true;
+ break;
+
case ARG_INTROSPECT: {
const char * const * i = NULL;
* instead. */
for (a = argv; a < argv + argc; a++)
- if ((r = parse_proc_cmdline_word(*a)) < 0)
+ if ((r = parse_proc_cmdline_word(*a)) < 0) {
+ log_error("Failed on cmdline argument %s: %s", *a, strerror(-r));
return r;
+ }
}
return 0;
" --crash-shell[=0|1] Run shell on crash\n"
" --confirm-spawn[=0|1] Ask for confirmation when spawning processes\n"
" --show-status[=0|1] Show status updates on the console during bootup\n"
-#ifdef HAVE_SYSV_COMPAT
- " --sysv-console[=0|1] Connect output of SysV scripts to console\n"
-#endif
" --log-target=TARGET Set log target (console, journal, syslog, kmsg, journal-or-kmsg, syslog-or-kmsg, null)\n"
" --log-level=LEVEL Set log level (debug, info, notice, warning, err, crit, alert, emerg)\n"
" --log-color[=0|1] Highlight important log messages\n"
return 0;
}
-static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
+static int version(void) {
+ puts(PACKAGE_STRING);
+ puts(DISTRIBUTION);
+ puts(SYSTEMD_FEATURES);
+
+ return 0;
+}
+
+static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool serialize_jobs) {
FILE *f = NULL;
FDSet *fds = NULL;
int r;
/* Make sure nothing is really destructed when we shut down */
m->n_reloading ++;
- if ((r = manager_open_serialization(m, &f)) < 0) {
+ r = manager_open_serialization(m, &f);
+ if (r < 0) {
log_error("Failed to create serialization file: %s", strerror(-r));
goto fail;
}
- if (!(fds = fdset_new())) {
+ fds = fdset_new();
+ if (!fds) {
r = -ENOMEM;
log_error("Failed to allocate fd set: %s", strerror(-r));
goto fail;
}
- if ((r = manager_serialize(m, f, fds)) < 0) {
+ r = manager_serialize(m, f, fds, serialize_jobs);
+ if (r < 0) {
log_error("Failed to serialize state: %s", strerror(-r));
goto fail;
}
goto fail;
}
- if ((r = fd_cloexec(fileno(f), false)) < 0) {
+ r = fd_cloexec(fileno(f), false);
+ if (r < 0) {
log_error("Failed to disable O_CLOEXEC for serialization: %s", strerror(-r));
goto fail;
}
- if ((r = fdset_cloexec(fds, false)) < 0) {
+ r = fdset_cloexec(fds, false);
+ if (r < 0) {
log_error("Failed to disable O_CLOEXEC for serialization fds: %s", strerror(-r));
goto fail;
}
return r;
}
+static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
+ struct rlimit nl;
+ int r;
+
+ assert(saved_rlimit);
+
+ /* Save the original RLIMIT_NOFILE so that we can reset it
+ * later when transitioning from the initrd to the main
+ * systemd or suchlike. */
+ if (getrlimit(RLIMIT_NOFILE, saved_rlimit) < 0) {
+ log_error("Reading RLIMIT_NOFILE failed: %m");
+ return -errno;
+ }
+
+ /* Make sure forked processes get the default kernel setting */
+ if (!arg_default_rlimit[RLIMIT_NOFILE]) {
+ struct rlimit *rl;
+
+ rl = newdup(struct rlimit, saved_rlimit, 1);
+ if (!rl)
+ return log_oom();
+
+ arg_default_rlimit[RLIMIT_NOFILE] = rl;
+ }
+
+ /* Bump up the resource limit for ourselves substantially */
+ nl.rlim_cur = nl.rlim_max = 64*1024;
+ r = setrlimit_closest(RLIMIT_NOFILE, &nl);
+ if (r < 0) {
+ log_error("Setting RLIMIT_NOFILE failed: %s", strerror(-r));
+ return r;
+ }
+
+ return 0;
+}
+
static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
const char *e;
unsigned long long a, b;
const char *shutdown_verb = NULL;
dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
static char systemd[] = "systemd";
- bool is_reexec = false;
+ bool skip_setup = false;
int j;
bool loaded_policy = false;
bool arm_reboot_watchdog = false;
+ bool queue_default_job = false;
+ char *switch_root_dir = NULL, *switch_root_init = NULL;
+ static struct rlimit saved_rlimit_nofile = { 0, 0 };
#ifdef HAVE_SYSV_COMPAT
if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
/* Determine if this is a reexecution or normal bootup. We do
* the full command line parsing much later, so let's just
* have a quick peek here. */
-
for (j = 1; j < argc; j++)
if (streq(argv[j], "--deserialize")) {
- is_reexec = true;
+ skip_setup = true;
+ break;
+ }
+
+ /* If we have switched root, do all the special setup
+ * things */
+ for (j = 1; j < argc; j++)
+ if (streq(argv[j], "--switched-root")) {
+ skip_setup = false;
break;
}
saved_argc = argc;
log_show_color(isatty(STDERR_FILENO) > 0);
- log_show_location(false);
- log_set_max_level(LOG_INFO);
- if (getpid() == 1) {
- arg_running_as = MANAGER_SYSTEM;
- log_set_target(detect_container(NULL) > 0 ? LOG_TARGET_JOURNAL : LOG_TARGET_JOURNAL_OR_KMSG);
+ if (getpid() == 1 && detect_container(NULL) <= 0) {
+
+ /* Running outside of a container as PID 1 */
+ arg_running_as = SYSTEMD_SYSTEM;
+ make_null_stdio();
+ log_set_target(LOG_TARGET_KMSG);
+ log_open();
+
+ if (in_initrd()) {
+ char *rd_timestamp = NULL;
+
+ dual_timestamp_get(&initrd_timestamp);
+ asprintf(&rd_timestamp, "%llu %llu",
+ (unsigned long long) initrd_timestamp.realtime,
+ (unsigned long long) initrd_timestamp.monotonic);
+ if (rd_timestamp) {
+ setenv("RD_TIMESTAMP", rd_timestamp, 1);
+ free(rd_timestamp);
+ }
+ }
- if (!is_reexec) {
+ if (!skip_setup) {
if (selinux_setup(&loaded_policy) < 0)
goto finish;
if (ima_setup() < 0)
goto finish;
}
- log_open();
-
if (label_init(NULL) < 0)
goto finish;
- if (!is_reexec)
+ if (!skip_setup) {
if (hwclock_is_localtime() > 0) {
int min;
- r = hwclock_apply_localtime_delta(&min);
+ /* The first-time call to settimeofday() does a time warp in the kernel */
+ r = hwclock_set_timezone(&min);
if (r < 0)
log_error("Failed to apply local time delta, ignoring: %s", strerror(-r));
else
log_info("RTC configured in localtime, applying delta of %i minutes to system time.", min);
+ } else {
+ /* Do dummy first-time call to seal the kernel's time warp magic */
+ hwclock_reset_timezone();
+
+ /* Tell the kernel our time zone */
+ r = hwclock_set_timezone(NULL);
+ if (r < 0)
+ log_error("Failed to set the kernel's time zone, ignoring: %s", strerror(-r));
}
+ }
+
+ /* Set the default for later on, but don't actually
+ * open the logs like this for now. Note that if we
+ * are transitioning from the initrd there might still
+ * be journal fd open, and we shouldn't attempt
+ * opening that before we parsed /proc/cmdline which
+ * might redirect output elsewhere. */
+ log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
+
+ } else if (getpid() == 1) {
+
+ /* Running inside a container, as PID 1 */
+ arg_running_as = SYSTEMD_SYSTEM;
+ log_set_target(LOG_TARGET_CONSOLE);
+ log_open();
+
+ /* For the later on, see above... */
+ log_set_target(LOG_TARGET_JOURNAL);
} else {
- arg_running_as = MANAGER_USER;
+
+ /* Running as user instance */
+ arg_running_as = SYSTEMD_USER;
log_set_target(LOG_TARGET_AUTO);
log_open();
}
/* Initialize default unit */
- if (set_default_unit(SPECIAL_DEFAULT_TARGET) < 0)
+ r = set_default_unit(SPECIAL_DEFAULT_TARGET);
+ if (r < 0) {
+ log_error("Failed to set default unit %s: %s", SPECIAL_DEFAULT_TARGET, strerror(-r));
goto finish;
+ }
/* By default, mount "cpu" and "cpuacct" together */
- arg_join_controllers = new(char**, 2);
+ arg_join_controllers = new(char**, 3);
if (!arg_join_controllers)
goto finish;
- arg_join_controllers[0] = strv_new("cpu", "cpuacct", NULL);
- arg_join_controllers[1] = NULL;
+ arg_join_controllers[0] = strv_new("cpu", "cpuacct", "cpuset", NULL);
+ arg_join_controllers[1] = strv_new("net_cls", "net_prio", NULL);
+ arg_join_controllers[2] = NULL;
if (!arg_join_controllers[0])
goto finish;
if (parse_config_file() < 0)
goto finish;
- if (arg_running_as == MANAGER_SYSTEM)
+ if (arg_running_as == SYSTEMD_SYSTEM)
if (parse_proc_cmdline() < 0)
goto finish;
goto finish;
}
- if (arg_running_as == MANAGER_SYSTEM &&
+ if (arg_running_as == SYSTEMD_SYSTEM &&
arg_action == ACTION_RUN &&
running_in_chroot() > 0) {
log_error("Cannot be run in a chroot() environment.");
if (arg_action == ACTION_HELP) {
retval = help();
goto finish;
+ } else if (arg_action == ACTION_VERSION) {
+ retval = version();
+ goto finish;
} else if (arg_action == ACTION_DUMP_CONFIGURATION_ITEMS) {
unit_dump_config_items(stdout);
retval = EXIT_SUCCESS;
#else
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
#endif
- arg_running_as == MANAGER_SYSTEM);
+ arg_running_as == SYSTEMD_SYSTEM);
- if (arg_running_as == MANAGER_SYSTEM) {
+ if (arg_running_as == SYSTEMD_SYSTEM) {
/* Parse the data passed to us. We leave this
* variables set, but the manager later on will not
* pass them on to our children. */
- parse_initrd_timestamp(&initrd_timestamp);
+ if (!in_initrd())
+ parse_initrd_timestamp(&initrd_timestamp);
/* Unset some environment variables passed in from the
* kernel that don't really make sense for us. */
unsetenv("SHLVL");
unsetenv("_");
- /* When we are invoked by a tool chroot-like such as
+ /* When we are invoked by a chroot-like tool such as
* nspawn, these might be set, but make little sense
* to pass on */
unsetenv("USER");
/* Move out of the way, so that we won't block unmounts */
assert_se(chdir("/") == 0);
- if (arg_running_as == MANAGER_SYSTEM) {
+ if (arg_running_as == SYSTEMD_SYSTEM) {
/* Become a session leader if we aren't one yet. */
setsid();
/* Reset the console, but only if this is really init and we
* are freshly booted */
- if (arg_running_as == MANAGER_SYSTEM && arg_action == ACTION_RUN) {
- console_setup(getpid() == 1 && !is_reexec);
- make_null_stdio();
- }
+ if (arg_running_as == SYSTEMD_SYSTEM && arg_action == ACTION_RUN)
+ console_setup(getpid() == 1 && !skip_setup);
/* Open the logging devices, if possible and necessary */
log_open();
goto finish;
}
- log_full(arg_running_as == MANAGER_SYSTEM ? LOG_INFO : LOG_DEBUG,
- PACKAGE_STRING " running in %s mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")", manager_running_as_to_string(arg_running_as));
+ if (arg_running_as == SYSTEMD_SYSTEM) {
+ const char *virtualization = NULL;
+
+ log_info(PACKAGE_STRING " running in system mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")");
+
+ detect_virtualization(&virtualization);
+ if (virtualization)
+ log_info("Detected virtualization '%s'.", virtualization);
+
+ if (in_initrd())
+ log_info("Running in initial RAM disk.");
+
+ } else
+ log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES "; " DISTRIBUTION ")");
- if (arg_running_as == MANAGER_SYSTEM && !is_reexec) {
+ if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
locale_setup();
if (arg_show_status || plymouth_running())
test_cgroups();
}
- if (arg_running_as == MANAGER_SYSTEM && arg_runtime_watchdog > 0)
+ if (arg_running_as == SYSTEMD_SYSTEM && arg_runtime_watchdog > 0)
watchdog_set_timeout(&arg_runtime_watchdog);
+ if (arg_timer_slack_nsec != (nsec_t) -1)
+ if (prctl(PR_SET_TIMERSLACK, arg_timer_slack_nsec) < 0)
+ log_error("Failed to adjust timer slack: %m");
+
+ if (arg_capability_bounding_set_drop) {
+ r = capability_bounding_set_drop(arg_capability_bounding_set_drop, true);
+ if (r < 0) {
+ log_error("Failed to drop capability bounding set: %s", strerror(-r));
+ goto finish;
+ }
+ r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
+ if (r < 0) {
+ log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
+ goto finish;
+ }
+ }
+
+ if (arg_running_as == SYSTEMD_USER) {
+ /* Become reaper of our children */
+ if (prctl(PR_SET_CHILD_SUBREAPER, 1) < 0) {
+ log_warning("Failed to make us a subreaper: %m");
+ if (errno == EINVAL)
+ log_info("Perhaps the kernel version is too old (< 3.4?)");
+ }
+ }
+
+ if (arg_running_as == SYSTEMD_SYSTEM)
+ bump_rlimit_nofile(&saved_rlimit_nofile);
+
r = manager_new(arg_running_as, &m);
if (r < 0) {
log_error("Failed to allocate manager object: %s", strerror(-r));
}
m->confirm_spawn = arg_confirm_spawn;
-#ifdef HAVE_SYSV_COMPAT
- m->sysv_console = arg_sysv_console;
-#endif
m->default_std_output = arg_default_std_output;
m->default_std_error = arg_default_std_error;
m->runtime_watchdog = arg_runtime_watchdog;
m->shutdown_watchdog = arg_shutdown_watchdog;
+ manager_set_default_rlimits(m, arg_default_rlimit);
+
if (dual_timestamp_is_set(&initrd_timestamp))
m->initrd_timestamp = initrd_timestamp;
manager_set_show_status(m, arg_show_status);
+ /* Remember whether we should queue the default job */
+ queue_default_job = !serialization || arg_switched_root;
+
before_startup = now(CLOCK_MONOTONIC);
r = manager_startup(m, serialization, fds);
if (r < 0)
log_error("Failed to fully start up daemon: %s", strerror(-r));
+ /* This will close all file descriptors that were opened, but
+ * not claimed by any unit. */
if (fds) {
- /* This will close all file descriptors that were opened, but
- * not claimed by any unit. */
-
fdset_free(fds);
fds = NULL;
}
if (serialization) {
fclose(serialization);
serialization = NULL;
- } else {
+ }
+
+ if (queue_default_job) {
DBusError error;
Unit *target = NULL;
Job *default_unit_job;
break;
case MANAGER_REEXECUTE:
- if (prepare_reexecute(m, &serialization, &fds) < 0)
+
+ if (prepare_reexecute(m, &serialization, &fds, true) < 0)
goto finish;
reexecute = true;
log_notice("Reexecuting.");
goto finish;
+ case MANAGER_SWITCH_ROOT:
+ /* Steal the switch root parameters */
+ switch_root_dir = m->switch_root;
+ switch_root_init = m->switch_root_init;
+ m->switch_root = m->switch_root_init = NULL;
+
+ if (!switch_root_init)
+ if (prepare_reexecute(m, &serialization, &fds, false) < 0)
+ goto finish;
+
+ reexecute = true;
+ log_notice("Switching root.");
+ goto finish;
+
case MANAGER_REBOOT:
case MANAGER_POWEROFF:
case MANAGER_HALT:
if (m)
manager_free(m);
+ for (j = 0; j < RLIMIT_NLIMITS; j++)
+ free(arg_default_rlimit[j]);
+
free(arg_default_unit);
strv_free(arg_default_controllers);
free_join_controllers();
dbus_shutdown();
-
label_finish();
if (reexecute) {
- const char *args[15];
- unsigned i = 0;
- char sfd[16];
+ const char **args;
+ unsigned i, args_size;
+
+ /* Close and disarm the watchdog, so that the new
+ * instance can reinitialize it, but doesn't get
+ * rebooted while we do that */
+ watchdog_close(true);
- assert(serialization);
- assert(fds);
+ /* Reset the RLIMIT_NOFILE to the kernel default, so
+ * that the new systemd can pass the kernel default to
+ * its child processes */
+ if (saved_rlimit_nofile.rlim_cur > 0)
+ setrlimit(RLIMIT_NOFILE, &saved_rlimit_nofile);
+
+ if (switch_root_dir) {
+ /* Kill all remaining processes from the
+ * initrd, but don't wait for them, so that we
+ * can handle the SIGCHLD for them after
+ * deserializing. */
+ broadcast_signal(SIGTERM, false);
+
+ /* And switch root */
+ r = switch_root(switch_root_dir);
+ if (r < 0)
+ log_error("Failed to switch root, ignoring: %s", strerror(-r));
+ }
- args[i++] = SYSTEMD_BINARY_PATH;
+ args_size = MAX(6, argc+1);
+ args = newa(const char*, args_size);
- args[i++] = "--log-level";
- args[i++] = log_level_to_string(log_get_max_level());
+ if (!switch_root_init) {
+ char sfd[16];
- args[i++] = "--log-target";
- args[i++] = log_target_to_string(log_get_target());
+ /* First try to spawn ourselves with the right
+ * path, and with full serialization. We do
+ * this only if the user didn't specify an
+ * explicit init to spawn. */
- if (arg_running_as == MANAGER_SYSTEM)
- args[i++] = "--system";
- else
- args[i++] = "--user";
+ assert(serialization);
+ assert(fds);
- if (arg_dump_core)
- args[i++] = "--dump-core";
+ snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
+ char_array_0(sfd);
- if (arg_crash_shell)
- args[i++] = "--crash-shell";
+ i = 0;
+ args[i++] = SYSTEMD_BINARY_PATH;
+ if (switch_root_dir)
+ args[i++] = "--switched-root";
+ args[i++] = arg_running_as == SYSTEMD_SYSTEM ? "--system" : "--user";
+ args[i++] = "--deserialize";
+ args[i++] = sfd;
+ args[i++] = NULL;
- if (arg_confirm_spawn)
- args[i++] = "--confirm-spawn";
+ assert(i <= args_size);
+ execv(args[0], (char* const*) args);
+ }
- if (arg_show_status)
- args[i++] = "--show-status=1";
- else
- args[i++] = "--show-status=0";
+ /* Try the fallback, if there is any, without any
+ * serialization. We pass the original argv[] and
+ * envp[]. (Well, modulo the ordering changes due to
+ * getopt() in argv[], and some cleanups in envp[],
+ * but let's hope that doesn't matter.) */
-#ifdef HAVE_SYSV_COMPAT
- if (arg_sysv_console)
- args[i++] = "--sysv-console=1";
- else
- args[i++] = "--sysv-console=0";
-#endif
+ if (serialization) {
+ fclose(serialization);
+ serialization = NULL;
+ }
- snprintf(sfd, sizeof(sfd), "%i", fileno(serialization));
- char_array_0(sfd);
+ if (fds) {
+ fdset_free(fds);
+ fds = NULL;
+ }
- args[i++] = "--deserialize";
- args[i++] = sfd;
+ /* Reopen the console */
+ make_console_stdio();
+ for (j = 1, i = 1; j < argc; j++)
+ args[i++] = argv[j];
args[i++] = NULL;
+ assert(i <= args_size);
- assert(i <= ELEMENTSOF(args));
-
- /* Close and disarm the watchdog, so that the new
- * instance can reinitialize it, but doesn't get
- * rebooted while we do that */
- watchdog_close(true);
+ if (switch_root_init) {
+ args[0] = switch_root_init;
+ execv(args[0], (char* const*) args);
+ log_warning("Failed to execute configured init, trying fallback: %m");
+ }
+ args[0] = "/sbin/init";
execv(args[0], (char* const*) args);
- log_error("Failed to reexecute: %m");
+ if (errno == ENOENT) {
+ log_warning("No /sbin/init, trying fallback");
+
+ args[0] = "/bin/sh";
+ args[1] = NULL;
+ execv(args[0], (char* const*) args);
+ log_error("Failed to execute /bin/sh, giving up: %m");
+ } else
+ log_warning("Failed to execute /sbin/init, giving up: %m");
}
if (serialization)
~ianmdlvl / elogind.git / blobdiff