#include <signal.h>
#include <sys/wait.h>
#include <unistd.h>
+#include <sys/inotify.h>
+#include <sys/epoll.h>
#include <sys/poll.h>
#include <sys/reboot.h>
#include <sys/ioctl.h>
#include "dbus-job.h"
#include "dbus-manager.h"
#include "bus-kernel.h"
+#include "time-util.h"
/* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */
#define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC)
#define JOBS_IN_PROGRESS_PERIOD_USEC (USEC_PER_SEC / 3)
#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
-#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
-
static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
static int manager_dispatch_time_change_fd(sd_event_source *source, int fd, uint32_t revents, void *userdata);
}
+static int have_ask_password(void) {
+ _cleanup_closedir_ DIR *dir;
+
+ dir = opendir("/run/systemd/ask-password");
+ if (!dir) {
+ if (errno == ENOENT)
+ return false;
+ else
+ return -errno;
+ }
+
+ for (;;) {
+ struct dirent *de;
+
+ errno = 0;
+ de = readdir(dir);
+ if (!de && errno != 0)
+ return -errno;
+ if (!de)
+ return false;
+
+ if (startswith(de->d_name, "ask."))
+ return true;
+ }
+}
+
+static int manager_dispatch_ask_password_fd(sd_event_source *source,
+ int fd, uint32_t revents, void *userdata) {
+ Manager *m = userdata;
+
+ assert(m);
+
+ flush_fd(fd);
+
+ m->have_ask_password = have_ask_password();
+ if (m->have_ask_password < 0)
+ /* Log error but continue. Negative have_ask_password
+ * is treated as unknown status. */
+ log_error("Failed to list /run/systemd/ask-password: %s", strerror(m->have_ask_password));
+
+ return 0;
+}
+
+static void manager_close_ask_password(Manager *m) {
+ assert(m);
+
+ m->ask_password_inotify_fd = safe_close(m->ask_password_inotify_fd);
+ m->ask_password_event_source = sd_event_source_unref(m->ask_password_event_source);
+ m->have_ask_password = -EINVAL;
+}
+
+static int manager_check_ask_password(Manager *m) {
+ int r;
+
+ assert(m);
+
+ if (!m->ask_password_event_source) {
+ assert(m->ask_password_inotify_fd < 0);
+
+ mkdir_p_label("/run/systemd/ask-password", 0755);
+
+ m->ask_password_inotify_fd = inotify_init1(IN_NONBLOCK|IN_CLOEXEC);
+ if (m->ask_password_inotify_fd < 0) {
+ log_error("inotify_init1() failed: %m");
+ return -errno;
+ }
+
+ if (inotify_add_watch(m->ask_password_inotify_fd, "/run/systemd/ask-password", IN_CREATE|IN_DELETE|IN_MOVE) < 0) {
+ log_error("Failed to add watch on /run/systemd/ask-password: %m");
+ manager_close_ask_password(m);
+ return -errno;
+ }
+
+ r = sd_event_add_io(m->event, &m->ask_password_event_source,
+ m->ask_password_inotify_fd, EPOLLIN,
+ manager_dispatch_ask_password_fd, m);
+ if (r < 0) {
+ log_error("Failed to add event source for /run/systemd/ask-password: %m");
+ manager_close_ask_password(m);
+ return -errno;
+ }
+
+ /* Queries might have been added meanwhile... */
+ manager_dispatch_ask_password_fd(m->ask_password_event_source,
+ m->ask_password_inotify_fd, EPOLLIN, m);
+ }
+
+ return m->have_ask_password;
+}
+
static int manager_watch_idle_pipe(Manager *m) {
int r;
if (m->test_run)
return 0;
- /* We are not interested in SIGSTOP and friends. */
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
- assert_se(sigemptyset(&mask) == 0);
+ /* We make liberal use of realtime signals here. On
+ * Linux/glibc we have 30 of them (with the exception of Linux
+ * on hppa, see below), between SIGRTMIN+0 ... SIGRTMIN+30
+ * (aka SIGRTMAX). */
+ assert_se(sigemptyset(&mask) == 0);
sigset_add_many(&mask,
SIGCHLD, /* Child died */
SIGTERM, /* Reexecute daemon */
SIGINT, /* Kernel sends us this on control-alt-del */
SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */
SIGPWR, /* Some kernel drivers and upsd send us this on power failure */
+
SIGRTMIN+0, /* systemd: start default.target */
SIGRTMIN+1, /* systemd: isolate rescue.target */
SIGRTMIN+2, /* systemd: isolate emergency.target */
SIGRTMIN+4, /* systemd: start poweroff.target */
SIGRTMIN+5, /* systemd: start reboot.target */
SIGRTMIN+6, /* systemd: start kexec.target */
+
+ /* ... space for more special targets ... */
+
SIGRTMIN+13, /* systemd: Immediate halt */
SIGRTMIN+14, /* systemd: Immediate poweroff */
SIGRTMIN+15, /* systemd: Immediate reboot */
SIGRTMIN+16, /* systemd: Immediate kexec */
+
+ /* ... space for more immediate system state changes ... */
+
SIGRTMIN+20, /* systemd: enable status messages */
SIGRTMIN+21, /* systemd: disable status messages */
SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */
SIGRTMIN+23, /* systemd: set log level to LOG_INFO */
SIGRTMIN+24, /* systemd: Immediate exit (--user only) */
+
+ /* .. one free signal here ... */
+
+#if !defined(__hppa64__) && !defined(__hppa__)
+ /* Apparently Linux on hppa has fewer RT
+ * signals (SIGRTMAX is SIGRTMIN+25 there),
+ * hence let's not try to make use of them
+ * here. Since these commands are accessible
+ * by different means and only really a safety
+ * net, the missing functionality on hppa
+ * shouldn't matter. */
+
SIGRTMIN+26, /* systemd: set log target to journal-or-kmsg */
SIGRTMIN+27, /* systemd: set log target to console */
SIGRTMIN+28, /* systemd: set log target to kmsg */
SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg (obsolete)*/
+
+ /* ... one free signal here SIGRTMIN+30 ... */
+#endif
-1);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
m->running_as = running_as;
m->exit_code = _MANAGER_EXIT_CODE_INVALID;
m->default_timer_accuracy_usec = USEC_PER_MINUTE;
- m->start_timeout_usec = DEFAULT_MANAGER_START_TIMEOUT_USEC;
- m->start_timeout_action = FAILURE_ACTION_POWEROFF_FORCE;
m->idle_pipe[0] = m->idle_pipe[1] = m->idle_pipe[2] = m->idle_pipe[3] = -1;
m->pin_cgroupfs_fd = m->notify_fd = m->signal_fd = m->time_change_fd = m->dev_autofs_fd = m->private_listen_fd = m->kdbus_fd = -1;
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
+ m->ask_password_inotify_fd = -1;
+ m->have_ask_password = -EINVAL; /* we don't know */
+
m->test_run = test_run;
r = manager_default_environment(m);
r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
if (r < 0) {
log_error("bind(%s) failed: %m", sa.un.sun_path);
- return -errno;
+ if (errno == EADDRINUSE) {
+ log_notice("Removing %s socket and trying again.", m->notify_socket);
+ r = unlink(m->notify_socket);
+ if (r < 0) {
+ log_error("Failed to remove %s: %m", m->notify_socket);
+ return -EADDRINUSE;
+ }
+
+ r = bind(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + strlen(sa.un.sun_path));
+ if (r < 0) {
+ log_error("bind(%s) failed: %m", sa.un.sun_path);
+ return -errno;
+ }
+ } else
+ return -errno;
}
r = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one));
safe_close(m->time_change_fd);
safe_close(m->kdbus_fd);
- manager_close_idle_pipe(m);
+ manager_close_ask_password(m);
- sd_event_source_unref(m->start_timeout_event_source);
- free(m->start_timeout_reboot_arg);
+ manager_close_idle_pipe(m);
udev_unref(m->udev);
sd_event_unref(m->event);
return 0;
}
-static int on_start_timeout(sd_event_source *s, usec_t usec, void *userdata) {
- Manager *m = userdata;
-
- assert(s);
- assert(m);
-
- m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
-
- log_error("Startup timed out.");
-
- failure_action(m, m->start_timeout_action, m->start_timeout_reboot_arg);
- return 0;
-}
-
int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
int r, q;
m->send_reloading_done = true;
}
- /* Possibly set up a start timeout */
- if (!dual_timestamp_is_set(&m->finish_timestamp)) {
- m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
-
- if (m->start_timeout_usec) {
- r = sd_event_add_time(
- m->event,
- &m->start_timeout_event_source,
- CLOCK_MONOTONIC,
- now(CLOCK_MONOTONIC) + m->start_timeout_usec, 0,
- on_start_timeout, m);
- if (r < 0)
- log_error("Failed to add start timeout event: %s", strerror(-r));
- }
- }
-
return r;
}
/* Turn off confirm spawn now */
m->confirm_spawn = false;
+ /* No need to update ask password status when we're going non-interactive */
+ manager_close_ask_password(m);
+
/* This is no longer the first boot */
manager_set_first_boot(m, false);
dual_timestamp_get(&m->finish_timestamp);
- m->start_timeout_event_source = sd_event_source_unref(m->start_timeout_event_source);
-
if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
/* Note that m->kernel_usec.monotonic is always at 0,
if (!IN_SET(manager_state(m), MANAGER_INITIALIZING, MANAGER_STARTING, MANAGER_STOPPING))
return false;
+ /* If we cannot find out the status properly, just proceed. */
+ if (manager_check_ask_password(m) > 0)
+ return false;
+
if (m->show_status > 0)
return true;
/* If Plymouth is running make sure we show the status, so
* that there's something nice to see when people press Esc */
-
return plymouth_running();
}
~ianmdlvl / elogind.git / blobdiff