#include <sys/signalfd.h>
#include <sys/wait.h>
#include <unistd.h>
+#include <utmpx.h>
#include <sys/poll.h>
#include <sys/reboot.h>
#include <sys/ioctl.h>
#include "ratelimit.h"
#include "cgroup.h"
#include "mount-setup.h"
+#include "utmp-wtmp.h"
static int manager_setup_signals(Manager *m) {
sigset_t mask;
assert(m);
- assert_se(reset_all_signal_handlers() == 0);
-
assert_se(sigemptyset(&mask) == 0);
assert_se(sigaddset(&mask, SIGCHLD) == 0);
assert_se(sigaddset(&mask, SIGINT) == 0); /* Kernel sends us this on control-alt-del */
NULL)))
return -ENOMEM;
}
+
+ if ((e = getenv("SYSTEMD_SYSVRCND_PATH")))
+ if (!(m->sysvrcnd_path = split_path_and_make_absolute(e)))
+ return -ENOMEM;
+
+ if (strv_isempty(m->sysvrcnd_path)) {
+ strv_free(m->sysvrcnd_path);
+
+ if (!(m->sysvrcnd_path = strv_new(
+ SYSTEM_SYSVRCND_PATH, /* /etc/rcN.d/ */
+ NULL)))
+ return -ENOMEM;
+ }
}
strv_uniq(m->unit_path);
strv_uniq(m->sysvinit_path);
+ strv_uniq(m->sysvrcnd_path);
assert(!strv_isempty(m->unit_path));
if (!(t = strv_join(m->unit_path, "\n\t")))
} else
log_debug("Ignoring SysV init scripts.");
+ if (!strv_isempty(m->sysvrcnd_path)) {
+
+ if (!(t = strv_join(m->sysvrcnd_path, "\n\t")))
+ return -ENOMEM;
+
+ log_debug("Looking for SysV rcN.d links in:\n\t%s", t);
+ free(t);
+ } else
+ log_debug("Ignoring SysV rcN.d links.");
+
return 0;
}
-int manager_new(Manager **_m) {
+int manager_new(ManagerRunningAs running_as, Manager **_m) {
Manager *m;
int r = -ENOMEM;
assert(_m);
+ assert(running_as >= 0);
+ assert(running_as < _MANAGER_RUNNING_AS_MAX);
if (!(m = new0(Manager, 1)))
return -ENOMEM;
+ m->boot_timestamp = now(CLOCK_REALTIME);
+
+ m->running_as = running_as;
m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
goto fail;
- if (getpid() == 1)
- m->running_as = MANAGER_INIT;
- else if (getuid() == 0)
- m->running_as = MANAGER_SYSTEM;
- else
- m->running_as = MANAGER_SESSION;
-
- log_debug("systemd running in %s mode.", manager_running_as_to_string(m->running_as));
-
if ((r = manager_find_paths(m)) < 0)
goto fail;
- if (chdir("/") < 0)
- log_warning("Failed to chdir to /: %s", strerror(errno));
-
- /* Become a session leader if we aren't one yet. */
- setsid();
-
if ((r = manager_setup_signals(m)) < 0)
goto fail;
- if ((r = mount_setup()) < 0)
- goto fail;
-
if ((r = manager_setup_cgroup(m)) < 0)
goto fail;
- dbus_connection_set_change_sigpipe(FALSE);
-
/* Try to connect to the busses, if possible. */
if ((r = bus_init_system(m)) < 0 ||
(r = bus_init_api(m)) < 0)
strv_free(m->unit_path);
strv_free(m->sysvinit_path);
+ strv_free(m->sysvrcnd_path);
free(m->cgroup_controller);
free(m->cgroup_hierarchy);
return r;
}
+ /* Now that the initial devices are available, let's see if we
+ * can write the utmp file */
+ manager_write_utmp_reboot(m);
+
return 0;
}
static int manager_dispatch_sigchld(Manager *m) {
assert(m);
- log_debug("dispatching SIGCHLD");
-
for (;;) {
siginfo_t si;
Unit *u;
if (!(u = hashmap_remove(m->watch_pids, UINT32_TO_PTR(si.si_pid))))
continue;
+ log_debug("child %llu belongs to %s", (long long unsigned) si.si_pid, unit_id(u));
+
UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
}
switch (sfsi.ssi_signo) {
- case SIGCHLD:
+ case SIGCHLD: {
+ char *name = NULL;
+
+ get_process_name(sfsi.ssi_pid, &name);
+ log_debug("Got SIGCHLD for process %llu (%s)", (unsigned long long) sfsi.ssi_pid, strna(name));
+ free(name);
+
sigchld = true;
break;
+ }
case SIGINT:
case SIGTERM:
break;
+ case SIGUSR1:
+
+ printf("→ By units:\n");
+ manager_dump_units(m, stdout, "\t");
+
+ printf("→ By jobs:\n");
+ manager_dump_jobs(m, stdout, "\t");
+
+ break;
+
default:
log_info("Got unhandled signal <%s>.", strsignal(sfsi.ssi_signo));
}
return 0;
}
+static bool manager_utmp_good(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if ((r = mount_path_is_mounted(m, _PATH_UTMPX)) <= 0) {
+
+ if (r < 0)
+ log_warning("Failed to determine whether " _PATH_UTMPX " is mounted: %s", strerror(-r));
+
+ return false;
+ }
+
+ return true;
+}
+
+void manager_write_utmp_reboot(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if (m->utmp_reboot_written)
+ return;
+
+ if (m->running_as != MANAGER_INIT)
+ return;
+
+ if (!manager_utmp_good(m))
+ return;
+
+ if ((r = utmp_put_reboot(m->boot_timestamp)) < 0) {
+
+ if (r != -ENOENT && r != -EROFS)
+ log_warning("Failed to write utmp/wtmp: %s", strerror(-r));
+
+ return;
+ }
+
+ m->utmp_reboot_written = true;
+}
+
+void manager_write_utmp_runlevel(Manager *m, Unit *u) {
+ int runlevel, r;
+
+ assert(m);
+ assert(u);
+
+ if (u->meta.type != UNIT_TARGET)
+ return;
+
+ if (m->running_as != MANAGER_INIT)
+ return;
+
+ if (!manager_utmp_good(m))
+ return;
+
+ if ((runlevel = target_get_runlevel(TARGET(u))) <= 0)
+ return;
+
+ if ((r = utmp_put_runlevel(0, runlevel, 0)) < 0) {
+
+ if (r != -ENOENT && r != -EROFS)
+ log_warning("Failed to write utmp/wtmp: %s", strerror(-r));
+ }
+}
+
static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
[MANAGER_INIT] = "init",
[MANAGER_SYSTEM] = "system",
~ianmdlvl / elogind.git / blobdiff