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Diffstat (limited to 'src/core/main.c')
-rw-r--r--src/core/main.c197
1 files changed, 62 insertions, 135 deletions
diff --git a/src/core/main.c b/src/core/main.c
index 7fc06bea05..fe291f8410 100644
--- a/src/core/main.c
+++ b/src/core/main.c
@@ -64,12 +64,10 @@
#endif
#include "hostname-setup.h"
#include "machine-id-setup.h"
-#include "locale-setup.h"
#include "selinux-setup.h"
#include "ima-setup.h"
#include "fileio.h"
#include "smack-setup.h"
-#include "efivars.h"
static enum {
ACTION_RUN,
@@ -89,12 +87,12 @@ static int arg_crash_chvt = -1;
static bool arg_confirm_spawn = false;
static bool arg_show_status = true;
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 char **arg_default_environment = NULL;
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;
@@ -106,7 +104,10 @@ static void nop_handler(int sig) {
_noreturn_ static void crash(int sig) {
- if (!arg_dump_core)
+ if (getpid() != 1)
+ /* Pass this on immediately, if this is not PID 1 */
+ raise(sig);
+ else if (!arg_dump_core)
log_error("Caught <%s>, not dumping core.", signal_to_string(sig));
else {
struct sigaction sa = {
@@ -116,7 +117,7 @@ _noreturn_ static void crash(int sig) {
pid_t pid;
/* We want to wait for the core process, hence let's enable SIGCHLD */
- assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
+ sigaction(SIGCHLD, &sa, NULL);
pid = fork();
if (pid < 0)
@@ -128,7 +129,7 @@ _noreturn_ static void crash(int sig) {
/* Enable default signal handler for core dump */
zero(sa);
sa.sa_handler = SIG_DFL;
- assert_se(sigaction(sig, &sa, NULL) == 0);
+ sigaction(sig, &sa, NULL);
/* Don't limit the core dump size */
rl.rlim_cur = RLIM_INFINITY;
@@ -136,7 +137,7 @@ _noreturn_ static void crash(int sig) {
setrlimit(RLIMIT_CORE, &rl);
/* Just to be sure... */
- assert_se(chdir("/") == 0);
+ chdir("/");
/* Raise the signal again */
raise(sig);
@@ -347,32 +348,21 @@ static int parse_proc_cmdline_word(const char *word) {
arg_default_std_error = r;
} else if (startswith(word, "systemd.setenv=")) {
_cleanup_free_ char *cenv = NULL;
- char *eq;
- int r;
cenv = strdup(word + 15);
if (!cenv)
return -ENOMEM;
- eq = strchr(cenv, '=');
- if (!eq) {
- if (!env_name_is_valid(cenv))
- log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
- else {
- r = unsetenv(cenv);
- if (r < 0)
- log_warning("Unsetting environment variable '%s' failed, ignoring: %m", cenv);
- }
- } else {
- if (!env_assignment_is_valid(cenv))
- log_warning("Environment variable assignment '%s' is not valid. Ignoring.", cenv);
- else {
- *eq = 0;
- r = setenv(cenv, eq + 1, 1);
- if (r < 0)
- log_warning("Setting environment variable '%s=%s' failed, ignoring: %m", cenv, eq + 1);
- }
- }
+ if (env_assignment_is_valid(cenv)) {
+ char **env;
+
+ env = strv_env_set(arg_default_environment, cenv);
+ if (env)
+ arg_default_environment = env;
+ else
+ log_warning("Setting environment variable '%s' failed, ignoring: %m", cenv);
+ } else
+ log_warning("Environment variable name '%s' is not valid. Ignoring.", cenv);
} else if (startswith(word, "systemd.") ||
(in_initrd() && startswith(word, "rd.systemd."))) {
@@ -411,7 +401,14 @@ static int parse_proc_cmdline_word(const char *word) {
} else if (streq(word, "quiet"))
arg_show_status = false;
- else if (!in_initrd()) {
+ else if (streq(word, "debug")) {
+ /* Log to kmsg, the journal socket will fill up before the
+ * journal is started and tools running during that time
+ * will block with every log message for for 60 seconds,
+ * before they give up. */
+ log_set_max_level(LOG_DEBUG);
+ log_set_target(LOG_TARGET_KMSG);
+ } else if (!in_initrd()) {
unsigned i;
/* SysV compatibility */
@@ -637,7 +634,6 @@ static int parse_config_file(void) {
{ "Manager", "ShowStatus", config_parse_bool, 0, &arg_show_status },
{ "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", "DefaultStandardOutput", config_parse_output, 0, &arg_default_std_output },
{ "Manager", "DefaultStandardError", config_parse_output, 0, &arg_default_std_error },
{ "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers },
@@ -645,6 +641,7 @@ static int parse_config_file(void) {
{ "Manager", "ShutdownWatchdogSec", config_parse_sec, 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", "DefaultEnvironment", config_parse_environ, 0, &arg_default_environment },
{ "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]},
@@ -1051,15 +1048,16 @@ static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds, bool switching
assert(_f);
assert(_fds);
- /* Make sure nothing is really destructed when we shut down */
- m->n_reloading ++;
-
r = manager_open_serialization(m, &f);
if (r < 0) {
log_error("Failed to create serialization file: %s", strerror(-r));
goto fail;
}
+ /* Make sure nothing is really destructed when we shut down */
+ m->n_reloading ++;
+ bus_broadcast_reloading(m, true);
+
fds = fdset_new();
if (!fds) {
r = -ENOMEM;
@@ -1140,25 +1138,6 @@ static int bump_rlimit_nofile(struct rlimit *saved_rlimit) {
return 0;
}
-static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
- const char *e;
- unsigned long long a, b;
-
- assert(t);
-
- e = getenv("RD_TIMESTAMP");
- if (!e)
- return NULL;
-
- if (sscanf(e, "%llu %llu", &a, &b) != 2)
- return NULL;
-
- t->realtime = (usec_t) a;
- t->monotonic = (usec_t) b;
-
- return t;
-}
-
static void test_mtab(void) {
char *p;
@@ -1239,8 +1218,6 @@ int main(int argc, char *argv[]) {
dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
dual_timestamp userspace_timestamp = { 0ULL, 0ULL };
dual_timestamp kernel_timestamp = { 0ULL, 0ULL };
- dual_timestamp firmware_timestamp = { 0ULL, 0ULL };
- dual_timestamp loader_timestamp = { 0ULL, 0ULL };
static char systemd[] = "systemd";
bool skip_setup = false;
int j;
@@ -1288,28 +1265,20 @@ int main(int argc, char *argv[]) {
log_show_color(isatty(STDERR_FILENO) > 0);
+ /* Disable the umask logic */
+ if (getpid() == 1)
+ umask(0);
+
if (getpid() == 1 && detect_container(NULL) <= 0) {
-#ifdef ENABLE_EFI
- efi_get_boot_timestamps(&userspace_timestamp, &firmware_timestamp, &loader_timestamp);
-#endif
+
/* 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;
-
+ if (in_initrd())
initrd_timestamp = userspace_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 (!skip_setup) {
mount_setup_early();
@@ -1345,10 +1314,10 @@ int main(int argc, char *argv[]) {
*/
hwclock_reset_timezone();
- /* Tell the kernel our time zone */
+ /* Tell the kernel our timezone */
r = hwclock_set_timezone(NULL);
if (r < 0)
- log_error("Failed to set the kernel's time zone, ignoring: %s", strerror(-r));
+ log_error("Failed to set the kernel's timezone, ignoring: %s", strerror(-r));
}
}
@@ -1408,7 +1377,6 @@ int main(int argc, char *argv[]) {
/* Reset all signal handlers. */
assert_se(reset_all_signal_handlers() == 0);
- /* If we are init, we can block sigkill. Yay. */
ignore_signals(SIGNALS_IGNORE, -1);
if (parse_config_file() < 0)
@@ -1474,59 +1442,12 @@ int main(int argc, char *argv[]) {
if (serialization)
assert_se(fdset_remove(fds, fileno(serialization)) >= 0);
- /* Set up PATH unless it is already set */
- setenv("PATH",
-#ifdef HAVE_SPLIT_USR
- "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
-#else
- "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin",
-#endif
- arg_running_as == SYSTEMD_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. */
- 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("HOME");
- unsetenv("TERM");
-
- /* When we are invoked by a shell, these might be set,
- * but make little sense to pass on */
- unsetenv("PWD");
- unsetenv("SHLVL");
- unsetenv("_");
-
- /* 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");
- unsetenv("LOGNAME");
-
- /* We suppress the socket activation env vars, as
- * we'll try to match *any* open fd to units if
- * possible. */
- unsetenv("LISTEN_FDS");
- unsetenv("LISTEN_PID");
-
- /* All other variables are left as is, so that clients
- * can still read them via /proc/1/environ */
- }
-
- /* Move out of the way, so that we won't block unmounts */
- assert_se(chdir("/") == 0);
-
- if (arg_running_as == SYSTEMD_SYSTEM) {
+ if (arg_running_as == SYSTEMD_SYSTEM)
/* Become a session leader if we aren't one yet. */
setsid();
- /* Disable the umask logic */
- umask(0);
- }
+ /* Move out of the way, so that we won't block unmounts */
+ assert_se(chdir("/") == 0);
/* Make sure D-Bus doesn't fiddle with the SIGPIPE handlers */
dbus_connection_set_change_sigpipe(FALSE);
@@ -1565,8 +1486,6 @@ int main(int argc, char *argv[]) {
log_debug(PACKAGE_STRING " running in user mode. (" SYSTEMD_FEATURES ")");
if (arg_running_as == SYSTEMD_SYSTEM && !skip_setup) {
- locale_setup();
-
if (arg_show_status || plymouth_running())
status_welcome();
@@ -1590,14 +1509,14 @@ int main(int argc, char *argv[]) {
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);
+ r = capability_bounding_set_drop_usermode(arg_capability_bounding_set_drop);
if (r < 0) {
- log_error("Failed to drop capability bounding set: %s", strerror(-r));
+ log_error("Failed to drop capability bounding set of usermode helpers: %s", strerror(-r));
goto finish;
}
- r = capability_bounding_set_drop_usermode(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 of usermode helpers: %s", strerror(-r));
+ log_error("Failed to drop capability bounding set: %s", strerror(-r));
goto finish;
}
}
@@ -1614,7 +1533,7 @@ int main(int argc, char *argv[]) {
if (arg_running_as == SYSTEMD_SYSTEM)
bump_rlimit_nofile(&saved_rlimit_nofile);
- r = manager_new(arg_running_as, &m);
+ r = manager_new(arg_running_as, !!serialization, &m);
if (r < 0) {
log_error("Failed to allocate manager object: %s", strerror(-r));
goto finish;
@@ -1627,14 +1546,12 @@ int main(int argc, char *argv[]) {
m->shutdown_watchdog = arg_shutdown_watchdog;
m->userspace_timestamp = userspace_timestamp;
m->kernel_timestamp = kernel_timestamp;
- m->firmware_timestamp = firmware_timestamp;
- m->loader_timestamp = loader_timestamp;
m->initrd_timestamp = initrd_timestamp;
manager_set_default_rlimits(m, arg_default_rlimit);
- if (arg_default_controllers)
- manager_set_default_controllers(m, arg_default_controllers);
+ if (arg_default_environment)
+ manager_environment_add(m, arg_default_environment);
manager_set_show_status(m, arg_show_status);
@@ -1650,6 +1567,7 @@ int main(int argc, char *argv[]) {
/* This will close all file descriptors that were opened, but
* not claimed by any unit. */
fdset_free(fds);
+ fds = NULL;
if (serialization) {
fclose(serialization);
@@ -1669,7 +1587,7 @@ int main(int argc, char *argv[]) {
if (r < 0) {
log_error("Failed to load default target: %s", bus_error(&error, r));
dbus_error_free(&error);
- } else if (target->load_state == UNIT_ERROR)
+ } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND)
log_error("Failed to load default target: %s", strerror(-target->load_error));
else if (target->load_state == UNIT_MASKED)
log_error("Default target masked.");
@@ -1682,7 +1600,7 @@ int main(int argc, char *argv[]) {
log_error("Failed to load rescue target: %s", bus_error(&error, r));
dbus_error_free(&error);
goto finish;
- } else if (target->load_state == UNIT_ERROR) {
+ } else if (target->load_state == UNIT_ERROR || target->load_state == UNIT_NOT_FOUND) {
log_error("Failed to load rescue target: %s", strerror(-target->load_error));
goto finish;
} else if (target->load_state == UNIT_MASKED) {
@@ -1805,7 +1723,6 @@ finish:
free(arg_default_rlimit[j]);
free(arg_default_unit);
- strv_free(arg_default_controllers);
free_join_controllers();
dbus_shutdown();
@@ -1865,6 +1782,10 @@ finish:
args[i++] = sfd;
args[i++] = NULL;
+ /* do not pass along the environment we inherit from the kernel or initrd */
+ if (switch_root_dir)
+ clearenv();
+
assert(i <= args_size);
execv(args[0], (char* const*) args);
}
@@ -1946,6 +1867,12 @@ finish:
watchdog_close(true);
}
+ /* Avoid the creation of new processes forked by the
+ * kernel; at this point, we will not listen to the
+ * signals anyway */
+ if (detect_container(NULL) <= 0)
+ cg_uninstall_release_agent(SYSTEMD_CGROUP_CONTROLLER);
+
execve(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line, env_block);
free(env_block);
log_error("Failed to execute shutdown binary, freezing: %m");
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