#include <signal.h>
#include <sys/wait.h>
#include <fcntl.h>
+#include <sys/prctl.h>
#include "manager.h"
#include "log.h"
#include "loopback-setup.h"
#include "kmod-setup.h"
#include "locale-setup.h"
+#include "selinux-setup.h"
#include "load-fragment.h"
#include "fdset.h"
#include "special.h"
sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
}
-static int make_null_stdio(void) {
- int null_fd, r;
-
- if ((null_fd = open("/dev/null", O_RDWR|O_NOCTTY)) < 0) {
- log_error("Failed to open /dev/null: %m");
- return -errno;
- }
-
- if ((r = make_stdio(null_fd)) < 0)
- log_warning("Failed to dup2() device: %s", strerror(-r));
-
- return r;
-}
-
static int console_setup(bool do_reset) {
int tty_fd, r;
#ifdef HAVE_SYSV_COMPAT
"systemd.sysv_console=0|1 Connect output of SysV scripts to console\n"
#endif
- "systemd.log_target=console|kmsg|syslog|syslog-org-kmsg|null\n"
+ "systemd.log_target=console|kmsg|syslog|syslog-or-kmsg|null\n"
" Log target\n"
"systemd.log_level=LEVEL Log level\n"
"systemd.log_color=0|1 Highlight important log messages\n"
}
static int parse_proc_cmdline(void) {
- char *line;
+ char *line, *w, *state;
int r;
- char *w;
size_t l;
- char *state;
if ((r = read_one_line_file("/proc/cmdline", &line)) < 0) {
log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));
return r;
}
+static struct dual_timestamp* parse_initrd_timestamp(struct dual_timestamp *t) {
+ const char *e;
+ unsigned long long a, b;
+
+ assert(t);
+
+ if (!(e = getenv("RD_TIMESTAMP")))
+ 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;
+
+ if (readlink_malloc("/etc/mtab", &p) >= 0) {
+ bool b;
+
+ b = streq(p, "/proc/self/mounts");
+ free(p);
+
+ if (b)
+ return;
+ }
+
+ log_error("/etc/mtab is not a symlink or not pointing to /proc/self/mounts. "
+ "This is not supported anymore. "
+ "Please make sure to replace this file by a symlink to avoid incorrect or misleading mount(8) output.");
+}
+
int main(int argc, char *argv[]) {
Manager *m = NULL;
int r, retval = EXIT_FAILURE;
FDSet *fds = NULL;
bool reexecute = false;
+ const char *shutdown_verb = NULL;
+ dual_timestamp initrd_timestamp = { 0ULL, 0ULL };
+ char systemd[] = "systemd";
if (getpid() != 1 && strstr(program_invocation_short_name, "init")) {
/* This is compatbility support for SysV, where
return 1;
}
+ /* If we get started via the /sbin/init symlink then we are
+ called 'init'. After a subsequent reexecution we are then
+ called 'systemd'. That is confusing, hence let's call us
+ systemd right-away. */
+
+ program_invocation_short_name = systemd;
+ prctl(PR_SET_NAME, systemd);
+
log_show_color(isatty(STDERR_FILENO) > 0);
log_show_location(false);
log_set_max_level(LOG_INFO);
arg_running_as = MANAGER_SYSTEM;
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
+ /* This might actually not return, but cause a
+ * reexecution */
+ if (selinux_setup(argv) < 0)
+ goto finish;
+
if (label_init() < 0)
goto finish;
} else {
"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
arg_running_as == MANAGER_SYSTEM);
+ if (arg_running_as == MANAGER_SYSTEM) {
+ /* Parse the data passed to us by the initrd and unset it */
+ parse_initrd_timestamp(&initrd_timestamp);
+ filter_environ("RD_");
+
+ /* Unset some environment variables passed in from the
+ * kernel that don't really make sense for us. */
+ unsetenv("HOME");
+ unsetenv("TERM");
+ }
+
/* Move out of the way, so that we won't block unmounts */
assert_se(chdir("/") == 0);
loopback_setup();
mkdir_p("/dev/.systemd/ask-password/", 0755);
+
+ test_mtab();
}
if ((r = manager_new(arg_running_as, &m)) < 0) {
m->mount_auto = arg_mount_auto;
m->swap_auto = arg_swap_auto;
+ if (dual_timestamp_is_set(&initrd_timestamp))
+ m->initrd_timestamp = initrd_timestamp;
+
if (arg_console)
manager_set_console(m, arg_console);
log_notice("Reexecuting.");
goto finish;
+ case MANAGER_REBOOT:
+ case MANAGER_POWEROFF:
+ case MANAGER_HALT:
+ case MANAGER_KEXEC: {
+ static const char * const table[_MANAGER_EXIT_CODE_MAX] = {
+ [MANAGER_REBOOT] = "reboot",
+ [MANAGER_POWEROFF] = "poweroff",
+ [MANAGER_HALT] = "halt",
+ [MANAGER_KEXEC] = "kexec"
+ };
+
+ assert_se(shutdown_verb = table[m->exit_code]);
+
+ log_notice("Shutting down.");
+ goto finish;
+ }
+
default:
assert_not_reached("Unknown exit code.");
}
if (fds)
fdset_free(fds);
+ if (shutdown_verb) {
+ const char * command_line[] = {
+ SYSTEMD_SHUTDOWN_BINARY_PATH,
+ shutdown_verb,
+ NULL
+ };
+
+ execv(SYSTEMD_SHUTDOWN_BINARY_PATH, (char **) command_line);
+ log_error("Failed to execute shutdown binary, freezing: %m");
+ }
+
if (getpid() == 1)
freeze();