9e9e2b722c
All active units will call unit_notify() during coldplug, so we just make sure we're counting from zero again and get the correct result for n_on_console. For n_running_jobs we likewise reset it to zero and then count the running jobs as we encounter them in deserialization.
2694 lines
81 KiB
C
2694 lines
81 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
|
|
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/***
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This file is part of systemd.
|
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|
|
Copyright 2010 Lennart Poettering
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|
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systemd is free software; you can redistribute it and/or modify it
|
|
under the terms of the GNU Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 of the License, or
|
|
(at your option) any later version.
|
|
|
|
systemd is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
|
***/
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|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <sys/epoll.h>
|
|
#include <signal.h>
|
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#include <sys/signalfd.h>
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#include <sys/wait.h>
|
|
#include <unistd.h>
|
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#include <sys/poll.h>
|
|
#include <sys/reboot.h>
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|
#include <sys/ioctl.h>
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|
#include <linux/kd.h>
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|
#include <termios.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
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#include <sys/stat.h>
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|
#include <dirent.h>
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|
#include <sys/timerfd.h>
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|
|
|
#ifdef HAVE_AUDIT
|
|
#include <libaudit.h>
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|
#endif
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|
|
|
#include "systemd/sd-daemon.h"
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|
#include "systemd/sd-id128.h"
|
|
#include "systemd/sd-messages.h"
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|
|
|
#include "manager.h"
|
|
#include "transaction.h"
|
|
#include "hashmap.h"
|
|
#include "macro.h"
|
|
#include "strv.h"
|
|
#include "log.h"
|
|
#include "util.h"
|
|
#include "mkdir.h"
|
|
#include "ratelimit.h"
|
|
#include "cgroup.h"
|
|
#include "mount-setup.h"
|
|
#include "unit-name.h"
|
|
#include "dbus-unit.h"
|
|
#include "dbus-job.h"
|
|
#include "missing.h"
|
|
#include "path-lookup.h"
|
|
#include "special.h"
|
|
#include "bus-errors.h"
|
|
#include "exit-status.h"
|
|
#include "virt.h"
|
|
#include "watchdog.h"
|
|
#include "cgroup-util.h"
|
|
#include "path-util.h"
|
|
#include "audit-fd.h"
|
|
#include "efivars.h"
|
|
#include "env-util.h"
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|
|
|
/* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
|
|
#define GC_QUEUE_ENTRIES_MAX 16
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|
|
|
/* 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)
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|
|
|
/* Initial delay and the interval for printing status messages about running jobs */
|
|
#define JOBS_IN_PROGRESS_WAIT_SEC 5
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#define JOBS_IN_PROGRESS_PERIOD_SEC 1
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#define JOBS_IN_PROGRESS_PERIOD_DIVISOR 3
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|
|
/* Where clients shall send notification messages to */
|
|
#define NOTIFY_SOCKET "@/org/freedesktop/systemd1/notify"
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|
|
#define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1)
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|
|
|
static int manager_setup_notify(Manager *m) {
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union {
|
|
struct sockaddr sa;
|
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struct sockaddr_un un;
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|
} sa;
|
|
struct epoll_event ev;
|
|
int one = 1;
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|
|
|
assert(m);
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|
|
|
m->notify_watch.type = WATCH_NOTIFY;
|
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m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0);
|
|
if (m->notify_watch.fd < 0) {
|
|
log_error("Failed to allocate notification socket: %m");
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|
return -errno;
|
|
}
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|
|
|
zero(sa);
|
|
sa.sa.sa_family = AF_UNIX;
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|
|
if (getpid() != 1 || detect_container(NULL) > 0)
|
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snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET "/%llu", random_ull());
|
|
else
|
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strncpy(sa.un.sun_path, NOTIFY_SOCKET, sizeof(sa.un.sun_path));
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|
|
|
sa.un.sun_path[0] = 0;
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|
|
|
if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
|
|
log_error("bind() failed: %m");
|
|
return -errno;
|
|
}
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|
|
|
if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) {
|
|
log_error("SO_PASSCRED failed: %m");
|
|
return -errno;
|
|
}
|
|
|
|
zero(ev);
|
|
ev.events = EPOLLIN;
|
|
ev.data.ptr = &m->notify_watch;
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|
|
|
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) {
|
|
log_error("Failed to add notification socket fd to epoll: %m");
|
|
return -errno;
|
|
}
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|
|
|
sa.un.sun_path[0] = '@';
|
|
m->notify_socket = strdup(sa.un.sun_path);
|
|
if (!m->notify_socket)
|
|
return log_oom();
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|
|
|
log_debug("Using notification socket %s", m->notify_socket);
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|
|
|
return 0;
|
|
}
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|
|
|
static int manager_jobs_in_progress_mod_timer(Manager *m) {
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|
struct itimerspec its;
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|
|
|
zero(its);
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|
its.it_value.tv_sec = JOBS_IN_PROGRESS_WAIT_SEC;
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its.it_interval.tv_sec = JOBS_IN_PROGRESS_PERIOD_SEC;
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|
|
if (timerfd_settime(m->jobs_in_progress_watch.fd, 0, &its, NULL) < 0)
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return -errno;
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|
|
|
return 0;
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|
}
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|
|
static int manager_watch_jobs_in_progress(Manager *m) {
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|
struct epoll_event ev;
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|
int r;
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|
|
assert(m);
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|
|
|
if (m->jobs_in_progress_watch.type != WATCH_INVALID)
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|
return 0;
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m->jobs_in_progress_watch.type = WATCH_JOBS_IN_PROGRESS;
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m->jobs_in_progress_watch.fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK|TFD_CLOEXEC);
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|
if (m->jobs_in_progress_watch.fd < 0) {
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|
log_error("Failed to create timerfd: %m");
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|
r = -errno;
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|
goto err;
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|
}
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|
r = manager_jobs_in_progress_mod_timer(m);
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|
if (r < 0) {
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|
log_error("Failed to set up timer for jobs progress watch: %s", strerror(-r));
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|
goto err;
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|
}
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|
zero(ev);
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|
ev.events = EPOLLIN;
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ev.data.ptr = &m->jobs_in_progress_watch;
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if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->jobs_in_progress_watch.fd, &ev) < 0) {
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log_error("Failed to add jobs progress timer fd to epoll: %m");
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|
r = -errno;
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|
goto err;
|
|
}
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|
|
|
log_debug("Set up jobs progress timerfd.");
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|
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|
return 0;
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|
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|
err:
|
|
if (m->jobs_in_progress_watch.fd >= 0)
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|
close_nointr_nofail(m->jobs_in_progress_watch.fd);
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watch_init(&m->jobs_in_progress_watch);
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return r;
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}
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static void manager_unwatch_jobs_in_progress(Manager *m) {
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if (m->jobs_in_progress_watch.type != WATCH_JOBS_IN_PROGRESS)
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return;
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assert_se(epoll_ctl(m->epoll_fd, EPOLL_CTL_DEL, m->jobs_in_progress_watch.fd, NULL) >= 0);
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close_nointr_nofail(m->jobs_in_progress_watch.fd);
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watch_init(&m->jobs_in_progress_watch);
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m->jobs_in_progress_iteration = 0;
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|
log_debug("Closed jobs progress timerfd.");
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|
}
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|
#define CYLON_BUFFER_EXTRA (2*strlen(ANSI_RED_ON) + strlen(ANSI_HIGHLIGHT_RED_ON) + 2*strlen(ANSI_HIGHLIGHT_OFF))
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|
static void draw_cylon(char buffer[], size_t buflen, unsigned width, unsigned pos) {
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char *p = buffer;
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assert(buflen >= CYLON_BUFFER_EXTRA + width + 1);
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assert(pos <= width+1); /* 0 or width+1 mean that the center light is behind the corner */
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if (pos > 1) {
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if (pos > 2) {
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memset(p, ' ', pos-2);
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p += pos-2;
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|
}
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memcpy(p, ANSI_RED_ON, strlen(ANSI_RED_ON));
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p += strlen(ANSI_RED_ON);
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|
*p++ = '*';
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|
}
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if (pos > 0 && pos <= width) {
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memcpy(p, ANSI_HIGHLIGHT_RED_ON, strlen(ANSI_HIGHLIGHT_RED_ON));
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|
p += strlen(ANSI_HIGHLIGHT_RED_ON);
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|
*p++ = '*';
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|
}
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|
|
|
memcpy(p, ANSI_HIGHLIGHT_OFF, strlen(ANSI_HIGHLIGHT_OFF));
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|
p += strlen(ANSI_HIGHLIGHT_OFF);
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|
|
if (pos < width) {
|
|
memcpy(p, ANSI_RED_ON, strlen(ANSI_RED_ON));
|
|
p += strlen(ANSI_RED_ON);
|
|
*p++ = '*';
|
|
if (pos < width-1) {
|
|
memset(p, ' ', width-1-pos);
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|
p += width-1-pos;
|
|
}
|
|
memcpy(p, ANSI_HIGHLIGHT_OFF, strlen(ANSI_HIGHLIGHT_OFF));
|
|
p += strlen(ANSI_HIGHLIGHT_OFF);
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|
}
|
|
*p = 0;
|
|
}
|
|
|
|
static void manager_print_jobs_in_progress(Manager *m) {
|
|
Iterator i;
|
|
Job *j;
|
|
char *job_of_n = NULL;
|
|
unsigned counter = 0, print_nr;
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|
char cylon[6 + CYLON_BUFFER_EXTRA + 1];
|
|
unsigned cylon_pos;
|
|
|
|
print_nr = (m->jobs_in_progress_iteration / JOBS_IN_PROGRESS_PERIOD_DIVISOR) % m->n_running_jobs;
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|
|
|
HASHMAP_FOREACH(j, m->jobs, i)
|
|
if (j->state == JOB_RUNNING && counter++ == print_nr)
|
|
break;
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|
|
|
if (!j)
|
|
return;
|
|
|
|
cylon_pos = m->jobs_in_progress_iteration % 14;
|
|
if (cylon_pos >= 8)
|
|
cylon_pos = 14 - cylon_pos;
|
|
draw_cylon(cylon, sizeof(cylon), 6, cylon_pos);
|
|
|
|
if (m->n_running_jobs > 1)
|
|
if (asprintf(&job_of_n, "(%u of %u) ", counter, m->n_running_jobs) < 0)
|
|
job_of_n = NULL;
|
|
|
|
manager_status_printf(m, true, cylon, "%sA %s job is running for %s",
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|
strempty(job_of_n), job_type_to_string(j->type), unit_description(j->unit));
|
|
free(job_of_n);
|
|
|
|
m->jobs_in_progress_iteration++;
|
|
}
|
|
|
|
static int manager_setup_time_change(Manager *m) {
|
|
struct epoll_event ev;
|
|
struct itimerspec its;
|
|
|
|
assert(m);
|
|
assert(m->time_change_watch.type == WATCH_INVALID);
|
|
|
|
/* Uses TFD_TIMER_CANCEL_ON_SET to get notifications whenever
|
|
* CLOCK_REALTIME makes a jump relative to CLOCK_MONOTONIC */
|
|
|
|
m->time_change_watch.type = WATCH_TIME_CHANGE;
|
|
m->time_change_watch.fd = timerfd_create(CLOCK_REALTIME, TFD_NONBLOCK|TFD_CLOEXEC);
|
|
if (m->time_change_watch.fd < 0) {
|
|
log_error("Failed to create timerfd: %m");
|
|
return -errno;
|
|
}
|
|
|
|
zero(its);
|
|
|
|
/* We only care for the cancellation event, hence we set the
|
|
* timeout to the latest possible value. */
|
|
assert_cc(sizeof(time_t) == sizeof(TIME_T_MAX));
|
|
its.it_value.tv_sec = TIME_T_MAX;
|
|
|
|
if (timerfd_settime(m->time_change_watch.fd, TFD_TIMER_ABSTIME|TFD_TIMER_CANCEL_ON_SET, &its, NULL) < 0) {
|
|
log_debug("Failed to set up TFD_TIMER_CANCEL_ON_SET, ignoring: %m");
|
|
close_nointr_nofail(m->time_change_watch.fd);
|
|
watch_init(&m->time_change_watch);
|
|
return 0;
|
|
}
|
|
|
|
zero(ev);
|
|
ev.events = EPOLLIN;
|
|
ev.data.ptr = &m->time_change_watch;
|
|
|
|
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->time_change_watch.fd, &ev) < 0) {
|
|
log_error("Failed to add timer change fd to epoll: %m");
|
|
return -errno;
|
|
}
|
|
|
|
log_debug("Set up TFD_TIMER_CANCEL_ON_SET timerfd.");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int enable_special_signals(Manager *m) {
|
|
int fd;
|
|
|
|
assert(m);
|
|
|
|
/* Enable that we get SIGINT on control-alt-del. In containers
|
|
* this will fail with EPERM (older) or EINVAL (newer), so
|
|
* ignore that. */
|
|
if (reboot(RB_DISABLE_CAD) < 0 && errno != EPERM && errno != EINVAL)
|
|
log_warning("Failed to enable ctrl-alt-del handling: %m");
|
|
|
|
fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC);
|
|
if (fd < 0) {
|
|
/* Support systems without virtual console */
|
|
if (fd != -ENOENT)
|
|
log_warning("Failed to open /dev/tty0: %m");
|
|
} else {
|
|
/* Enable that we get SIGWINCH on kbrequest */
|
|
if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0)
|
|
log_warning("Failed to enable kbrequest handling: %s", strerror(errno));
|
|
|
|
close_nointr_nofail(fd);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int manager_setup_signals(Manager *m) {
|
|
sigset_t mask;
|
|
struct epoll_event ev;
|
|
struct sigaction sa;
|
|
|
|
assert(m);
|
|
|
|
/* We are not interested in SIGSTOP and friends. */
|
|
zero(sa);
|
|
sa.sa_handler = SIG_DFL;
|
|
sa.sa_flags = SA_NOCLDSTOP|SA_RESTART;
|
|
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
|
|
|
|
assert_se(sigemptyset(&mask) == 0);
|
|
|
|
sigset_add_many(&mask,
|
|
SIGCHLD, /* Child died */
|
|
SIGTERM, /* Reexecute daemon */
|
|
SIGHUP, /* Reload configuration */
|
|
SIGUSR1, /* systemd/upstart: reconnect to D-Bus */
|
|
SIGUSR2, /* systemd: dump status */
|
|
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+3, /* systemd: start halt.target */
|
|
SIGRTMIN+4, /* systemd: start poweroff.target */
|
|
SIGRTMIN+5, /* systemd: start reboot.target */
|
|
SIGRTMIN+6, /* systemd: start kexec.target */
|
|
SIGRTMIN+13, /* systemd: Immediate halt */
|
|
SIGRTMIN+14, /* systemd: Immediate poweroff */
|
|
SIGRTMIN+15, /* systemd: Immediate reboot */
|
|
SIGRTMIN+16, /* systemd: Immediate kexec */
|
|
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) */
|
|
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 */
|
|
-1);
|
|
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
|
|
|
|
m->signal_watch.type = WATCH_SIGNAL;
|
|
m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC);
|
|
if (m->signal_watch.fd < 0)
|
|
return -errno;
|
|
|
|
zero(ev);
|
|
ev.events = EPOLLIN;
|
|
ev.data.ptr = &m->signal_watch;
|
|
|
|
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
|
|
return -errno;
|
|
|
|
if (m->running_as == SYSTEMD_SYSTEM)
|
|
return enable_special_signals(m);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void manager_strip_environment(Manager *m) {
|
|
assert(m);
|
|
|
|
/* Remove variables from the inherited set that are part of
|
|
* the container interface:
|
|
* http://www.freedesktop.org/wiki/Software/systemd/ContainerInterface */
|
|
strv_remove_prefix(m->environment, "container=");
|
|
strv_remove_prefix(m->environment, "container_");
|
|
|
|
/* Remove variables from the inherited set that are part of
|
|
* the initrd interface:
|
|
* http://www.freedesktop.org/wiki/Software/systemd/InitrdInterface */
|
|
strv_remove_prefix(m->environment, "RD_");
|
|
|
|
/* Drop invalid entries */
|
|
strv_env_clean(m->environment);
|
|
}
|
|
|
|
int manager_new(SystemdRunningAs running_as, Manager **_m) {
|
|
Manager *m;
|
|
int r = -ENOMEM;
|
|
|
|
assert(_m);
|
|
assert(running_as >= 0);
|
|
assert(running_as < _SYSTEMD_RUNNING_AS_MAX);
|
|
|
|
m = new0(Manager, 1);
|
|
if (!m)
|
|
return -ENOMEM;
|
|
|
|
dual_timestamp_get(&m->userspace_timestamp);
|
|
dual_timestamp_from_monotonic(&m->kernel_timestamp, 0);
|
|
#ifdef ENABLE_EFI
|
|
efi_get_boot_timestamps(&m->userspace_timestamp, &m->firmware_timestamp, &m->loader_timestamp);
|
|
#endif
|
|
|
|
m->running_as = running_as;
|
|
m->name_data_slot = m->conn_data_slot = m->subscribed_data_slot = -1;
|
|
m->exit_code = _MANAGER_EXIT_CODE_INVALID;
|
|
m->pin_cgroupfs_fd = -1;
|
|
m->idle_pipe[0] = m->idle_pipe[1] = -1;
|
|
|
|
watch_init(&m->signal_watch);
|
|
watch_init(&m->mount_watch);
|
|
watch_init(&m->swap_watch);
|
|
watch_init(&m->udev_watch);
|
|
watch_init(&m->time_change_watch);
|
|
watch_init(&m->jobs_in_progress_watch);
|
|
|
|
m->epoll_fd = m->dev_autofs_fd = -1;
|
|
m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */
|
|
|
|
m->environment = strv_copy(environ);
|
|
if (!m->environment)
|
|
goto fail;
|
|
|
|
manager_strip_environment(m);
|
|
|
|
if (running_as == SYSTEMD_SYSTEM) {
|
|
m->default_controllers = strv_new("cpu", NULL);
|
|
if (!m->default_controllers)
|
|
goto fail;
|
|
}
|
|
|
|
if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
|
|
goto fail;
|
|
|
|
if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func)))
|
|
goto fail;
|
|
|
|
if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func)))
|
|
goto fail;
|
|
|
|
if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func)))
|
|
goto fail;
|
|
|
|
if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func)))
|
|
goto fail;
|
|
|
|
m->epoll_fd = epoll_create1(EPOLL_CLOEXEC);
|
|
if (m->epoll_fd < 0)
|
|
goto fail;
|
|
|
|
r = manager_setup_signals(m);
|
|
if (r < 0)
|
|
goto fail;
|
|
|
|
r = manager_setup_cgroup(m);
|
|
if (r < 0)
|
|
goto fail;
|
|
|
|
r = manager_setup_notify(m);
|
|
if (r < 0)
|
|
goto fail;
|
|
|
|
r = manager_setup_time_change(m);
|
|
if (r < 0)
|
|
goto fail;
|
|
|
|
/* Try to connect to the busses, if possible. */
|
|
r = bus_init(m, running_as != SYSTEMD_SYSTEM);
|
|
if (r < 0)
|
|
goto fail;
|
|
|
|
m->taint_usr = dir_is_empty("/usr") > 0;
|
|
|
|
*_m = m;
|
|
return 0;
|
|
|
|
fail:
|
|
manager_free(m);
|
|
return r;
|
|
}
|
|
|
|
static unsigned manager_dispatch_cleanup_queue(Manager *m) {
|
|
Unit *u;
|
|
unsigned n = 0;
|
|
|
|
assert(m);
|
|
|
|
while ((u = m->cleanup_queue)) {
|
|
assert(u->in_cleanup_queue);
|
|
|
|
unit_free(u);
|
|
n++;
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
enum {
|
|
GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */
|
|
GC_OFFSET_UNSURE, /* No clue */
|
|
GC_OFFSET_GOOD, /* We still need this unit */
|
|
GC_OFFSET_BAD, /* We don't need this unit anymore */
|
|
_GC_OFFSET_MAX
|
|
};
|
|
|
|
static void unit_gc_sweep(Unit *u, unsigned gc_marker) {
|
|
Iterator i;
|
|
Unit *other;
|
|
bool is_bad;
|
|
|
|
assert(u);
|
|
|
|
if (u->gc_marker == gc_marker + GC_OFFSET_GOOD ||
|
|
u->gc_marker == gc_marker + GC_OFFSET_BAD ||
|
|
u->gc_marker == gc_marker + GC_OFFSET_IN_PATH)
|
|
return;
|
|
|
|
if (u->in_cleanup_queue)
|
|
goto bad;
|
|
|
|
if (unit_check_gc(u))
|
|
goto good;
|
|
|
|
u->gc_marker = gc_marker + GC_OFFSET_IN_PATH;
|
|
|
|
is_bad = true;
|
|
|
|
SET_FOREACH(other, u->dependencies[UNIT_REFERENCED_BY], i) {
|
|
unit_gc_sweep(other, gc_marker);
|
|
|
|
if (other->gc_marker == gc_marker + GC_OFFSET_GOOD)
|
|
goto good;
|
|
|
|
if (other->gc_marker != gc_marker + GC_OFFSET_BAD)
|
|
is_bad = false;
|
|
}
|
|
|
|
if (is_bad)
|
|
goto bad;
|
|
|
|
/* We were unable to find anything out about this entry, so
|
|
* let's investigate it later */
|
|
u->gc_marker = gc_marker + GC_OFFSET_UNSURE;
|
|
unit_add_to_gc_queue(u);
|
|
return;
|
|
|
|
bad:
|
|
/* We definitely know that this one is not useful anymore, so
|
|
* let's mark it for deletion */
|
|
u->gc_marker = gc_marker + GC_OFFSET_BAD;
|
|
unit_add_to_cleanup_queue(u);
|
|
return;
|
|
|
|
good:
|
|
u->gc_marker = gc_marker + GC_OFFSET_GOOD;
|
|
}
|
|
|
|
static unsigned manager_dispatch_gc_queue(Manager *m) {
|
|
Unit *u;
|
|
unsigned n = 0;
|
|
unsigned gc_marker;
|
|
|
|
assert(m);
|
|
|
|
if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) &&
|
|
(m->gc_queue_timestamp <= 0 ||
|
|
(m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC)))
|
|
return 0;
|
|
|
|
log_debug("Running GC...");
|
|
|
|
m->gc_marker += _GC_OFFSET_MAX;
|
|
if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX)
|
|
m->gc_marker = 1;
|
|
|
|
gc_marker = m->gc_marker;
|
|
|
|
while ((u = m->gc_queue)) {
|
|
assert(u->in_gc_queue);
|
|
|
|
unit_gc_sweep(u, gc_marker);
|
|
|
|
LIST_REMOVE(Unit, gc_queue, m->gc_queue, u);
|
|
u->in_gc_queue = false;
|
|
|
|
n++;
|
|
|
|
if (u->gc_marker == gc_marker + GC_OFFSET_BAD ||
|
|
u->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
|
|
log_debug_unit(u->id, "Collecting %s", u->id);
|
|
u->gc_marker = gc_marker + GC_OFFSET_BAD;
|
|
unit_add_to_cleanup_queue(u);
|
|
}
|
|
}
|
|
|
|
m->n_in_gc_queue = 0;
|
|
m->gc_queue_timestamp = 0;
|
|
|
|
return n;
|
|
}
|
|
|
|
static void manager_clear_jobs_and_units(Manager *m) {
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
|
|
while ((u = hashmap_first(m->units)))
|
|
unit_free(u);
|
|
|
|
manager_dispatch_cleanup_queue(m);
|
|
|
|
assert(!m->load_queue);
|
|
assert(!m->run_queue);
|
|
assert(!m->dbus_unit_queue);
|
|
assert(!m->dbus_job_queue);
|
|
assert(!m->cleanup_queue);
|
|
assert(!m->gc_queue);
|
|
|
|
assert(hashmap_isempty(m->jobs));
|
|
assert(hashmap_isempty(m->units));
|
|
|
|
m->n_on_console = 0;
|
|
m->n_running_jobs = 0;
|
|
}
|
|
|
|
void manager_free(Manager *m) {
|
|
UnitType c;
|
|
int i;
|
|
|
|
assert(m);
|
|
|
|
manager_clear_jobs_and_units(m);
|
|
|
|
for (c = 0; c < _UNIT_TYPE_MAX; c++)
|
|
if (unit_vtable[c]->shutdown)
|
|
unit_vtable[c]->shutdown(m);
|
|
|
|
/* If we reexecute ourselves, we keep the root cgroup
|
|
* around */
|
|
manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
|
|
|
|
manager_undo_generators(m);
|
|
|
|
bus_done(m);
|
|
|
|
hashmap_free(m->units);
|
|
hashmap_free(m->jobs);
|
|
hashmap_free(m->watch_pids);
|
|
hashmap_free(m->watch_bus);
|
|
|
|
if (m->epoll_fd >= 0)
|
|
close_nointr_nofail(m->epoll_fd);
|
|
if (m->signal_watch.fd >= 0)
|
|
close_nointr_nofail(m->signal_watch.fd);
|
|
if (m->notify_watch.fd >= 0)
|
|
close_nointr_nofail(m->notify_watch.fd);
|
|
if (m->time_change_watch.fd >= 0)
|
|
close_nointr_nofail(m->time_change_watch.fd);
|
|
if (m->jobs_in_progress_watch.fd >= 0)
|
|
close_nointr_nofail(m->jobs_in_progress_watch.fd);
|
|
|
|
free(m->notify_socket);
|
|
|
|
lookup_paths_free(&m->lookup_paths);
|
|
strv_free(m->environment);
|
|
|
|
strv_free(m->default_controllers);
|
|
|
|
hashmap_free(m->cgroup_bondings);
|
|
set_free_free(m->unit_path_cache);
|
|
|
|
close_pipe(m->idle_pipe);
|
|
|
|
free(m->switch_root);
|
|
free(m->switch_root_init);
|
|
|
|
for (i = 0; i < RLIMIT_NLIMITS; i++)
|
|
free(m->rlimit[i]);
|
|
|
|
free(m);
|
|
}
|
|
|
|
int manager_enumerate(Manager *m) {
|
|
int r = 0, q;
|
|
UnitType c;
|
|
|
|
assert(m);
|
|
|
|
/* Let's ask every type to load all units from disk/kernel
|
|
* that it might know */
|
|
for (c = 0; c < _UNIT_TYPE_MAX; c++)
|
|
if (unit_vtable[c]->enumerate)
|
|
if ((q = unit_vtable[c]->enumerate(m)) < 0)
|
|
r = q;
|
|
|
|
manager_dispatch_load_queue(m);
|
|
return r;
|
|
}
|
|
|
|
int manager_coldplug(Manager *m) {
|
|
int r = 0, q;
|
|
Iterator i;
|
|
Unit *u;
|
|
char *k;
|
|
|
|
assert(m);
|
|
|
|
/* Then, let's set up their initial state. */
|
|
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
|
|
|
|
/* ignore aliases */
|
|
if (u->id != k)
|
|
continue;
|
|
|
|
if ((q = unit_coldplug(u)) < 0)
|
|
r = q;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
static void manager_build_unit_path_cache(Manager *m) {
|
|
char **i;
|
|
DIR _cleanup_free_ *d = NULL;
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
set_free_free(m->unit_path_cache);
|
|
|
|
m->unit_path_cache = set_new(string_hash_func, string_compare_func);
|
|
if (!m->unit_path_cache) {
|
|
log_error("Failed to allocate unit path cache.");
|
|
return;
|
|
}
|
|
|
|
/* This simply builds a list of files we know exist, so that
|
|
* we don't always have to go to disk */
|
|
|
|
STRV_FOREACH(i, m->lookup_paths.unit_path) {
|
|
struct dirent *de;
|
|
|
|
d = opendir(*i);
|
|
if (!d) {
|
|
if (errno != ENOENT)
|
|
log_error("Failed to open directory %s: %m", *i);
|
|
continue;
|
|
}
|
|
|
|
while ((de = readdir(d))) {
|
|
char *p;
|
|
|
|
if (ignore_file(de->d_name))
|
|
continue;
|
|
|
|
p = strjoin(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL);
|
|
if (!p) {
|
|
r = -ENOMEM;
|
|
goto fail;
|
|
}
|
|
|
|
r = set_put(m->unit_path_cache, p);
|
|
if (r < 0) {
|
|
free(p);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
closedir(d);
|
|
d = NULL;
|
|
}
|
|
|
|
return;
|
|
|
|
fail:
|
|
log_error("Failed to build unit path cache: %s", strerror(-r));
|
|
|
|
set_free_free(m->unit_path_cache);
|
|
m->unit_path_cache = NULL;
|
|
}
|
|
|
|
int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
|
|
int r, q;
|
|
|
|
assert(m);
|
|
|
|
manager_run_generators(m);
|
|
|
|
r = lookup_paths_init(
|
|
&m->lookup_paths, m->running_as, true,
|
|
m->generator_unit_path,
|
|
m->generator_unit_path_early,
|
|
m->generator_unit_path_late);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
manager_build_unit_path_cache(m);
|
|
|
|
/* If we will deserialize make sure that during enumeration
|
|
* this is already known, so we increase the counter here
|
|
* already */
|
|
if (serialization)
|
|
m->n_reloading ++;
|
|
|
|
/* First, enumerate what we can from all config files */
|
|
r = manager_enumerate(m);
|
|
|
|
/* Second, deserialize if there is something to deserialize */
|
|
if (serialization) {
|
|
q = manager_deserialize(m, serialization, fds);
|
|
if (q < 0)
|
|
r = q;
|
|
}
|
|
|
|
/* Any fds left? Find some unit which wants them. This is
|
|
* useful to allow container managers to pass some file
|
|
* descriptors to us pre-initialized. This enables
|
|
* socket-based activation of entire containers. */
|
|
if (fdset_size(fds) > 0) {
|
|
q = manager_distribute_fds(m, fds);
|
|
if (q < 0)
|
|
r = q;
|
|
}
|
|
|
|
/* Third, fire things up! */
|
|
q = manager_coldplug(m);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
if (serialization) {
|
|
assert(m->n_reloading > 0);
|
|
m->n_reloading --;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
|
|
int r;
|
|
Transaction *tr;
|
|
|
|
assert(m);
|
|
assert(type < _JOB_TYPE_MAX);
|
|
assert(unit);
|
|
assert(mode < _JOB_MODE_MAX);
|
|
|
|
if (mode == JOB_ISOLATE && type != JOB_START) {
|
|
dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (mode == JOB_ISOLATE && !unit->allow_isolate) {
|
|
dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
|
|
return -EPERM;
|
|
}
|
|
|
|
log_debug_unit(unit->id,
|
|
"Trying to enqueue job %s/%s/%s", unit->id,
|
|
job_type_to_string(type), job_mode_to_string(mode));
|
|
|
|
job_type_collapse(&type, unit);
|
|
|
|
tr = transaction_new(mode == JOB_REPLACE_IRREVERSIBLY);
|
|
if (!tr)
|
|
return -ENOMEM;
|
|
|
|
r = transaction_add_job_and_dependencies(tr, type, unit, NULL, true, override, false,
|
|
mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS,
|
|
mode == JOB_IGNORE_DEPENDENCIES, e);
|
|
if (r < 0)
|
|
goto tr_abort;
|
|
|
|
if (mode == JOB_ISOLATE) {
|
|
r = transaction_add_isolate_jobs(tr, m);
|
|
if (r < 0)
|
|
goto tr_abort;
|
|
}
|
|
|
|
r = transaction_activate(tr, m, mode, e);
|
|
if (r < 0)
|
|
goto tr_abort;
|
|
|
|
log_debug_unit(unit->id,
|
|
"Enqueued job %s/%s as %u", unit->id,
|
|
job_type_to_string(type), (unsigned) tr->anchor_job->id);
|
|
|
|
if (_ret)
|
|
*_ret = tr->anchor_job;
|
|
|
|
transaction_free(tr);
|
|
return 0;
|
|
|
|
tr_abort:
|
|
transaction_abort(tr);
|
|
transaction_free(tr);
|
|
return r;
|
|
}
|
|
|
|
int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) {
|
|
Unit *unit;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(type < _JOB_TYPE_MAX);
|
|
assert(name);
|
|
assert(mode < _JOB_MODE_MAX);
|
|
|
|
r = manager_load_unit(m, name, NULL, NULL, &unit);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return manager_add_job(m, type, unit, mode, override, e, _ret);
|
|
}
|
|
|
|
Job *manager_get_job(Manager *m, uint32_t id) {
|
|
assert(m);
|
|
|
|
return hashmap_get(m->jobs, UINT32_TO_PTR(id));
|
|
}
|
|
|
|
Unit *manager_get_unit(Manager *m, const char *name) {
|
|
assert(m);
|
|
assert(name);
|
|
|
|
return hashmap_get(m->units, name);
|
|
}
|
|
|
|
unsigned manager_dispatch_load_queue(Manager *m) {
|
|
Unit *u;
|
|
unsigned n = 0;
|
|
|
|
assert(m);
|
|
|
|
/* Make sure we are not run recursively */
|
|
if (m->dispatching_load_queue)
|
|
return 0;
|
|
|
|
m->dispatching_load_queue = true;
|
|
|
|
/* Dispatches the load queue. Takes a unit from the queue and
|
|
* tries to load its data until the queue is empty */
|
|
|
|
while ((u = m->load_queue)) {
|
|
assert(u->in_load_queue);
|
|
|
|
unit_load(u);
|
|
n++;
|
|
}
|
|
|
|
m->dispatching_load_queue = false;
|
|
return n;
|
|
}
|
|
|
|
int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
|
|
Unit *ret;
|
|
UnitType t;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(name || path);
|
|
|
|
/* This will prepare the unit for loading, but not actually
|
|
* load anything from disk. */
|
|
|
|
if (path && !is_path(path)) {
|
|
dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!name)
|
|
name = path_get_file_name(path);
|
|
|
|
t = unit_name_to_type(name);
|
|
|
|
if (t == _UNIT_TYPE_INVALID || !unit_name_is_valid(name, false)) {
|
|
dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
ret = manager_get_unit(m, name);
|
|
if (ret) {
|
|
*_ret = ret;
|
|
return 1;
|
|
}
|
|
|
|
ret = unit_new(m, unit_vtable[t]->object_size);
|
|
if (!ret)
|
|
return -ENOMEM;
|
|
|
|
if (path) {
|
|
ret->fragment_path = strdup(path);
|
|
if (!ret->fragment_path) {
|
|
unit_free(ret);
|
|
return -ENOMEM;
|
|
}
|
|
}
|
|
|
|
if ((r = unit_add_name(ret, name)) < 0) {
|
|
unit_free(ret);
|
|
return r;
|
|
}
|
|
|
|
unit_add_to_load_queue(ret);
|
|
unit_add_to_dbus_queue(ret);
|
|
unit_add_to_gc_queue(ret);
|
|
|
|
if (_ret)
|
|
*_ret = ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
/* This will load the service information files, but not actually
|
|
* start any services or anything. */
|
|
|
|
r = manager_load_unit_prepare(m, name, path, e, _ret);
|
|
if (r != 0)
|
|
return r;
|
|
|
|
manager_dispatch_load_queue(m);
|
|
|
|
if (_ret)
|
|
*_ret = unit_follow_merge(*_ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) {
|
|
Iterator i;
|
|
Job *j;
|
|
|
|
assert(s);
|
|
assert(f);
|
|
|
|
HASHMAP_FOREACH(j, s->jobs, i)
|
|
job_dump(j, f, prefix);
|
|
}
|
|
|
|
void manager_dump_units(Manager *s, FILE *f, const char *prefix) {
|
|
Iterator i;
|
|
Unit *u;
|
|
const char *t;
|
|
|
|
assert(s);
|
|
assert(f);
|
|
|
|
HASHMAP_FOREACH_KEY(u, t, s->units, i)
|
|
if (u->id == t)
|
|
unit_dump(u, f, prefix);
|
|
}
|
|
|
|
void manager_clear_jobs(Manager *m) {
|
|
Job *j;
|
|
|
|
assert(m);
|
|
|
|
while ((j = hashmap_first(m->jobs)))
|
|
/* No need to recurse. We're cancelling all jobs. */
|
|
job_finish_and_invalidate(j, JOB_CANCELED, false);
|
|
}
|
|
|
|
unsigned manager_dispatch_run_queue(Manager *m) {
|
|
Job *j;
|
|
unsigned n = 0;
|
|
|
|
if (m->dispatching_run_queue)
|
|
return 0;
|
|
|
|
m->dispatching_run_queue = true;
|
|
|
|
while ((j = m->run_queue)) {
|
|
assert(j->installed);
|
|
assert(j->in_run_queue);
|
|
|
|
job_run_and_invalidate(j);
|
|
n++;
|
|
}
|
|
|
|
m->dispatching_run_queue = false;
|
|
|
|
if (hashmap_size(m->jobs) > 0)
|
|
manager_watch_jobs_in_progress(m);
|
|
|
|
return n;
|
|
}
|
|
|
|
unsigned manager_dispatch_dbus_queue(Manager *m) {
|
|
Job *j;
|
|
Unit *u;
|
|
unsigned n = 0;
|
|
|
|
assert(m);
|
|
|
|
if (m->dispatching_dbus_queue)
|
|
return 0;
|
|
|
|
m->dispatching_dbus_queue = true;
|
|
|
|
while ((u = m->dbus_unit_queue)) {
|
|
assert(u->in_dbus_queue);
|
|
|
|
bus_unit_send_change_signal(u);
|
|
n++;
|
|
}
|
|
|
|
while ((j = m->dbus_job_queue)) {
|
|
assert(j->in_dbus_queue);
|
|
|
|
bus_job_send_change_signal(j);
|
|
n++;
|
|
}
|
|
|
|
m->dispatching_dbus_queue = false;
|
|
return n;
|
|
}
|
|
|
|
static int manager_process_notify_fd(Manager *m) {
|
|
ssize_t n;
|
|
|
|
assert(m);
|
|
|
|
for (;;) {
|
|
char buf[4096];
|
|
struct msghdr msghdr;
|
|
struct iovec iovec;
|
|
struct ucred *ucred;
|
|
union {
|
|
struct cmsghdr cmsghdr;
|
|
uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
|
|
} control;
|
|
Unit *u;
|
|
char **tags;
|
|
|
|
zero(iovec);
|
|
iovec.iov_base = buf;
|
|
iovec.iov_len = sizeof(buf)-1;
|
|
|
|
zero(control);
|
|
zero(msghdr);
|
|
msghdr.msg_iov = &iovec;
|
|
msghdr.msg_iovlen = 1;
|
|
msghdr.msg_control = &control;
|
|
msghdr.msg_controllen = sizeof(control);
|
|
|
|
n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT);
|
|
if (n <= 0) {
|
|
if (n >= 0)
|
|
return -EIO;
|
|
|
|
if (errno == EAGAIN || errno == EINTR)
|
|
break;
|
|
|
|
return -errno;
|
|
}
|
|
|
|
if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) ||
|
|
control.cmsghdr.cmsg_level != SOL_SOCKET ||
|
|
control.cmsghdr.cmsg_type != SCM_CREDENTIALS ||
|
|
control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) {
|
|
log_warning("Received notify message without credentials. Ignoring.");
|
|
continue;
|
|
}
|
|
|
|
ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
|
|
|
|
u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid));
|
|
if (!u) {
|
|
u = cgroup_unit_by_pid(m, ucred->pid);
|
|
if (!u) {
|
|
log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
assert((size_t) n < sizeof(buf));
|
|
buf[n] = 0;
|
|
tags = strv_split(buf, "\n\r");
|
|
if (!tags)
|
|
return log_oom();
|
|
|
|
log_debug_unit(u->id, "Got notification message for unit %s", u->id);
|
|
|
|
if (UNIT_VTABLE(u)->notify_message)
|
|
UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags);
|
|
|
|
strv_free(tags);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int manager_dispatch_sigchld(Manager *m) {
|
|
assert(m);
|
|
|
|
for (;;) {
|
|
siginfo_t si;
|
|
Unit *u;
|
|
int r;
|
|
|
|
zero(si);
|
|
|
|
/* First we call waitd() for a PID and do not reap the
|
|
* zombie. That way we can still access /proc/$PID for
|
|
* it while it is a zombie. */
|
|
if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) {
|
|
|
|
if (errno == ECHILD)
|
|
break;
|
|
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
return -errno;
|
|
}
|
|
|
|
if (si.si_pid <= 0)
|
|
break;
|
|
|
|
if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) {
|
|
char _cleanup_free_ *name = NULL;
|
|
|
|
get_process_comm(si.si_pid, &name);
|
|
log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
|
|
}
|
|
|
|
/* Let's flush any message the dying child might still
|
|
* have queued for us. This ensures that the process
|
|
* still exists in /proc so that we can figure out
|
|
* which cgroup and hence unit it belongs to. */
|
|
r = manager_process_notify_fd(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* And now figure out the unit this belongs to */
|
|
u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid));
|
|
if (!u)
|
|
u = cgroup_unit_by_pid(m, si.si_pid);
|
|
|
|
/* And now, we actually reap the zombie. */
|
|
if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) {
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
return -errno;
|
|
}
|
|
|
|
if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
|
|
continue;
|
|
|
|
log_debug("Child %lu died (code=%s, status=%i/%s)",
|
|
(long unsigned) si.si_pid,
|
|
sigchld_code_to_string(si.si_code),
|
|
si.si_status,
|
|
strna(si.si_code == CLD_EXITED
|
|
? exit_status_to_string(si.si_status, EXIT_STATUS_FULL)
|
|
: signal_to_string(si.si_status)));
|
|
|
|
if (!u)
|
|
continue;
|
|
|
|
log_debug_unit(u->id,
|
|
"Child %lu belongs to %s", (long unsigned) si.si_pid, u->id);
|
|
|
|
hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid));
|
|
UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int manager_start_target(Manager *m, const char *name, JobMode mode) {
|
|
int r;
|
|
DBusError error;
|
|
|
|
dbus_error_init(&error);
|
|
|
|
log_debug_unit(name, "Activating special unit %s", name);
|
|
|
|
r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL);
|
|
if (r < 0)
|
|
log_error_unit(name,
|
|
"Failed to enqueue %s job: %s", name, bus_error(&error, r));
|
|
|
|
dbus_error_free(&error);
|
|
|
|
return r;
|
|
}
|
|
|
|
static int manager_process_signal_fd(Manager *m) {
|
|
ssize_t n;
|
|
struct signalfd_siginfo sfsi;
|
|
bool sigchld = false;
|
|
|
|
assert(m);
|
|
|
|
for (;;) {
|
|
n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi));
|
|
if (n != sizeof(sfsi)) {
|
|
|
|
if (n >= 0)
|
|
return -EIO;
|
|
|
|
if (errno == EINTR || errno == EAGAIN)
|
|
break;
|
|
|
|
return -errno;
|
|
}
|
|
|
|
if (sfsi.ssi_pid > 0) {
|
|
char *p = NULL;
|
|
|
|
get_process_comm(sfsi.ssi_pid, &p);
|
|
|
|
log_debug("Received SIG%s from PID %lu (%s).",
|
|
signal_to_string(sfsi.ssi_signo),
|
|
(unsigned long) sfsi.ssi_pid, strna(p));
|
|
free(p);
|
|
} else
|
|
log_debug("Received SIG%s.", signal_to_string(sfsi.ssi_signo));
|
|
|
|
switch (sfsi.ssi_signo) {
|
|
|
|
case SIGCHLD:
|
|
sigchld = true;
|
|
break;
|
|
|
|
case SIGTERM:
|
|
if (m->running_as == SYSTEMD_SYSTEM) {
|
|
/* This is for compatibility with the
|
|
* original sysvinit */
|
|
m->exit_code = MANAGER_REEXECUTE;
|
|
break;
|
|
}
|
|
|
|
/* Fall through */
|
|
|
|
case SIGINT:
|
|
if (m->running_as == SYSTEMD_SYSTEM) {
|
|
manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
|
|
break;
|
|
}
|
|
|
|
/* Run the exit target if there is one, if not, just exit. */
|
|
if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) {
|
|
m->exit_code = MANAGER_EXIT;
|
|
return 0;
|
|
}
|
|
|
|
break;
|
|
|
|
case SIGWINCH:
|
|
if (m->running_as == SYSTEMD_SYSTEM)
|
|
manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
|
|
|
|
/* This is a nop on non-init */
|
|
break;
|
|
|
|
case SIGPWR:
|
|
if (m->running_as == SYSTEMD_SYSTEM)
|
|
manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
|
|
|
|
/* This is a nop on non-init */
|
|
break;
|
|
|
|
case SIGUSR1: {
|
|
Unit *u;
|
|
|
|
u = manager_get_unit(m, SPECIAL_DBUS_SERVICE);
|
|
|
|
if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
|
|
log_info("Trying to reconnect to bus...");
|
|
bus_init(m, true);
|
|
}
|
|
|
|
if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
|
|
log_info("Loading D-Bus service...");
|
|
manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case SIGUSR2: {
|
|
FILE *f;
|
|
char *dump = NULL;
|
|
size_t size;
|
|
|
|
if (!(f = open_memstream(&dump, &size))) {
|
|
log_warning("Failed to allocate memory stream.");
|
|
break;
|
|
}
|
|
|
|
manager_dump_units(m, f, "\t");
|
|
manager_dump_jobs(m, f, "\t");
|
|
|
|
if (ferror(f)) {
|
|
fclose(f);
|
|
free(dump);
|
|
log_warning("Failed to write status stream");
|
|
break;
|
|
}
|
|
|
|
fclose(f);
|
|
log_dump(LOG_INFO, dump);
|
|
free(dump);
|
|
|
|
break;
|
|
}
|
|
|
|
case SIGHUP:
|
|
m->exit_code = MANAGER_RELOAD;
|
|
break;
|
|
|
|
default: {
|
|
|
|
/* Starting SIGRTMIN+0 */
|
|
static const char * const target_table[] = {
|
|
[0] = SPECIAL_DEFAULT_TARGET,
|
|
[1] = SPECIAL_RESCUE_TARGET,
|
|
[2] = SPECIAL_EMERGENCY_TARGET,
|
|
[3] = SPECIAL_HALT_TARGET,
|
|
[4] = SPECIAL_POWEROFF_TARGET,
|
|
[5] = SPECIAL_REBOOT_TARGET,
|
|
[6] = SPECIAL_KEXEC_TARGET
|
|
};
|
|
|
|
/* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */
|
|
static const ManagerExitCode code_table[] = {
|
|
[0] = MANAGER_HALT,
|
|
[1] = MANAGER_POWEROFF,
|
|
[2] = MANAGER_REBOOT,
|
|
[3] = MANAGER_KEXEC
|
|
};
|
|
|
|
if ((int) sfsi.ssi_signo >= SIGRTMIN+0 &&
|
|
(int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) {
|
|
int idx = (int) sfsi.ssi_signo - SIGRTMIN;
|
|
manager_start_target(m, target_table[idx],
|
|
(idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE);
|
|
break;
|
|
}
|
|
|
|
if ((int) sfsi.ssi_signo >= SIGRTMIN+13 &&
|
|
(int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) {
|
|
m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13];
|
|
break;
|
|
}
|
|
|
|
switch (sfsi.ssi_signo - SIGRTMIN) {
|
|
|
|
case 20:
|
|
log_debug("Enabling showing of status.");
|
|
manager_set_show_status(m, true);
|
|
break;
|
|
|
|
case 21:
|
|
log_debug("Disabling showing of status.");
|
|
manager_set_show_status(m, false);
|
|
break;
|
|
|
|
case 22:
|
|
log_set_max_level(LOG_DEBUG);
|
|
log_notice("Setting log level to debug.");
|
|
break;
|
|
|
|
case 23:
|
|
log_set_max_level(LOG_INFO);
|
|
log_notice("Setting log level to info.");
|
|
break;
|
|
|
|
case 24:
|
|
if (m->running_as == SYSTEMD_USER) {
|
|
m->exit_code = MANAGER_EXIT;
|
|
return 0;
|
|
}
|
|
|
|
/* This is a nop on init */
|
|
break;
|
|
|
|
case 26:
|
|
log_set_target(LOG_TARGET_JOURNAL_OR_KMSG);
|
|
log_notice("Setting log target to journal-or-kmsg.");
|
|
break;
|
|
|
|
case 27:
|
|
log_set_target(LOG_TARGET_CONSOLE);
|
|
log_notice("Setting log target to console.");
|
|
break;
|
|
|
|
case 28:
|
|
log_set_target(LOG_TARGET_KMSG);
|
|
log_notice("Setting log target to kmsg.");
|
|
break;
|
|
|
|
case 29:
|
|
log_set_target(LOG_TARGET_SYSLOG_OR_KMSG);
|
|
log_notice("Setting log target to syslog-or-kmsg.");
|
|
break;
|
|
|
|
default:
|
|
log_warning("Got unhandled signal <%s>.", signal_to_string(sfsi.ssi_signo));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sigchld)
|
|
return manager_dispatch_sigchld(m);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int process_event(Manager *m, struct epoll_event *ev) {
|
|
int r;
|
|
Watch *w;
|
|
|
|
assert(m);
|
|
assert(ev);
|
|
|
|
assert_se(w = ev->data.ptr);
|
|
|
|
if (w->type == WATCH_INVALID)
|
|
return 0;
|
|
|
|
switch (w->type) {
|
|
|
|
case WATCH_SIGNAL:
|
|
|
|
/* An incoming signal? */
|
|
if (ev->events != EPOLLIN)
|
|
return -EINVAL;
|
|
|
|
if ((r = manager_process_signal_fd(m)) < 0)
|
|
return r;
|
|
|
|
break;
|
|
|
|
case WATCH_NOTIFY:
|
|
|
|
/* An incoming daemon notification event? */
|
|
if (ev->events != EPOLLIN)
|
|
return -EINVAL;
|
|
|
|
if ((r = manager_process_notify_fd(m)) < 0)
|
|
return r;
|
|
|
|
break;
|
|
|
|
case WATCH_FD:
|
|
|
|
/* Some fd event, to be dispatched to the units */
|
|
UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w);
|
|
break;
|
|
|
|
case WATCH_UNIT_TIMER:
|
|
case WATCH_JOB_TIMER: {
|
|
uint64_t v;
|
|
ssize_t k;
|
|
|
|
/* Some timer event, to be dispatched to the units */
|
|
k = read(w->fd, &v, sizeof(v));
|
|
if (k != sizeof(v)) {
|
|
|
|
if (k < 0 && (errno == EINTR || errno == EAGAIN))
|
|
break;
|
|
|
|
log_error("Failed to read timer event counter: %s", k < 0 ? strerror(-k) : "Short read");
|
|
return k < 0 ? -errno : -EIO;
|
|
}
|
|
|
|
if (w->type == WATCH_UNIT_TIMER)
|
|
UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
|
|
else
|
|
job_timer_event(w->data.job, v, w);
|
|
break;
|
|
}
|
|
|
|
case WATCH_MOUNT:
|
|
/* Some mount table change, intended for the mount subsystem */
|
|
mount_fd_event(m, ev->events);
|
|
break;
|
|
|
|
case WATCH_SWAP:
|
|
/* Some swap table change, intended for the swap subsystem */
|
|
swap_fd_event(m, ev->events);
|
|
break;
|
|
|
|
case WATCH_UDEV:
|
|
/* Some notification from udev, intended for the device subsystem */
|
|
device_fd_event(m, ev->events);
|
|
break;
|
|
|
|
case WATCH_DBUS_WATCH:
|
|
bus_watch_event(m, w, ev->events);
|
|
break;
|
|
|
|
case WATCH_DBUS_TIMEOUT:
|
|
bus_timeout_event(m, w, ev->events);
|
|
break;
|
|
|
|
case WATCH_TIME_CHANGE: {
|
|
Unit *u;
|
|
Iterator i;
|
|
|
|
log_struct(LOG_INFO,
|
|
MESSAGE_ID(SD_MESSAGE_TIME_CHANGE),
|
|
"MESSAGE=Time has been changed",
|
|
NULL);
|
|
|
|
/* Restart the watch */
|
|
close_nointr_nofail(m->time_change_watch.fd);
|
|
watch_init(&m->time_change_watch);
|
|
manager_setup_time_change(m);
|
|
|
|
HASHMAP_FOREACH(u, m->units, i) {
|
|
if (UNIT_VTABLE(u)->time_change)
|
|
UNIT_VTABLE(u)->time_change(u);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
case WATCH_JOBS_IN_PROGRESS: {
|
|
uint64_t v;
|
|
|
|
/* not interested in the data */
|
|
read(w->fd, &v, sizeof(v));
|
|
|
|
manager_print_jobs_in_progress(m);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
log_error("event type=%i", w->type);
|
|
assert_not_reached("Unknown epoll event type.");
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_loop(Manager *m) {
|
|
int r;
|
|
|
|
RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000);
|
|
|
|
assert(m);
|
|
m->exit_code = MANAGER_RUNNING;
|
|
|
|
/* Release the path cache */
|
|
set_free_free(m->unit_path_cache);
|
|
m->unit_path_cache = NULL;
|
|
|
|
manager_check_finished(m);
|
|
|
|
/* There might still be some zombies hanging around from
|
|
* before we were exec()'ed. Leat's reap them */
|
|
r = manager_dispatch_sigchld(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while (m->exit_code == MANAGER_RUNNING) {
|
|
struct epoll_event event;
|
|
int n;
|
|
int wait_msec = -1;
|
|
|
|
if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM)
|
|
watchdog_ping();
|
|
|
|
if (!ratelimit_test(&rl)) {
|
|
/* Yay, something is going seriously wrong, pause a little */
|
|
log_warning("Looping too fast. Throttling execution a little.");
|
|
sleep(1);
|
|
continue;
|
|
}
|
|
|
|
if (manager_dispatch_load_queue(m) > 0)
|
|
continue;
|
|
|
|
if (manager_dispatch_run_queue(m) > 0)
|
|
continue;
|
|
|
|
if (bus_dispatch(m) > 0)
|
|
continue;
|
|
|
|
if (manager_dispatch_cleanup_queue(m) > 0)
|
|
continue;
|
|
|
|
if (manager_dispatch_gc_queue(m) > 0)
|
|
continue;
|
|
|
|
if (manager_dispatch_dbus_queue(m) > 0)
|
|
continue;
|
|
|
|
if (swap_dispatch_reload(m) > 0)
|
|
continue;
|
|
|
|
/* Sleep for half the watchdog time */
|
|
if (m->runtime_watchdog > 0 && m->running_as == SYSTEMD_SYSTEM) {
|
|
wait_msec = (int) (m->runtime_watchdog / 2 / USEC_PER_MSEC);
|
|
if (wait_msec <= 0)
|
|
wait_msec = 1;
|
|
} else
|
|
wait_msec = -1;
|
|
|
|
n = epoll_wait(m->epoll_fd, &event, 1, wait_msec);
|
|
if (n < 0) {
|
|
|
|
if (errno == EINTR)
|
|
continue;
|
|
|
|
return -errno;
|
|
} else if (n == 0)
|
|
continue;
|
|
|
|
assert(n == 1);
|
|
|
|
r = process_event(m, &event);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
return m->exit_code;
|
|
}
|
|
|
|
int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u) {
|
|
char *n;
|
|
Unit *u;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(s);
|
|
assert(_u);
|
|
|
|
if (!startswith(s, "/org/freedesktop/systemd1/unit/"))
|
|
return -EINVAL;
|
|
|
|
n = bus_path_unescape(s+31);
|
|
if (!n)
|
|
return -ENOMEM;
|
|
|
|
r = manager_load_unit(m, n, NULL, e, &u);
|
|
free(n);
|
|
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*_u = u;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) {
|
|
Job *j;
|
|
unsigned id;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(s);
|
|
assert(_j);
|
|
|
|
if (!startswith(s, "/org/freedesktop/systemd1/job/"))
|
|
return -EINVAL;
|
|
|
|
r = safe_atou(s + 30, &id);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
j = manager_get_job(m, id);
|
|
if (!j)
|
|
return -ENOENT;
|
|
|
|
*_j = j;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
|
|
|
|
#ifdef HAVE_AUDIT
|
|
char *p;
|
|
int audit_fd;
|
|
|
|
audit_fd = get_audit_fd();
|
|
if (audit_fd < 0)
|
|
return;
|
|
|
|
/* Don't generate audit events if the service was already
|
|
* started and we're just deserializing */
|
|
if (m->n_reloading > 0)
|
|
return;
|
|
|
|
if (m->running_as != SYSTEMD_SYSTEM)
|
|
return;
|
|
|
|
if (u->type != UNIT_SERVICE)
|
|
return;
|
|
|
|
p = unit_name_to_prefix_and_instance(u->id);
|
|
if (!p) {
|
|
log_error_unit(u->id,
|
|
"Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
|
|
return;
|
|
}
|
|
|
|
if (audit_log_user_comm_message(audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) {
|
|
if (errno == EPERM) {
|
|
/* We aren't allowed to send audit messages?
|
|
* Then let's not retry again. */
|
|
close_audit_fd();
|
|
} else
|
|
log_warning("Failed to send audit message: %m");
|
|
}
|
|
|
|
free(p);
|
|
#endif
|
|
|
|
}
|
|
|
|
void manager_send_unit_plymouth(Manager *m, Unit *u) {
|
|
int fd = -1;
|
|
union sockaddr_union sa;
|
|
int n = 0;
|
|
char *message = NULL;
|
|
|
|
/* Don't generate plymouth events if the service was already
|
|
* started and we're just deserializing */
|
|
if (m->n_reloading > 0)
|
|
return;
|
|
|
|
if (m->running_as != SYSTEMD_SYSTEM)
|
|
return;
|
|
|
|
if (u->type != UNIT_SERVICE &&
|
|
u->type != UNIT_MOUNT &&
|
|
u->type != UNIT_SWAP)
|
|
return;
|
|
|
|
/* We set SOCK_NONBLOCK here so that we rather drop the
|
|
* message then wait for plymouth */
|
|
if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
|
|
log_error("socket() failed: %m");
|
|
return;
|
|
}
|
|
|
|
zero(sa);
|
|
sa.sa.sa_family = AF_UNIX;
|
|
strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1);
|
|
if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) {
|
|
|
|
if (errno != EPIPE &&
|
|
errno != EAGAIN &&
|
|
errno != ENOENT &&
|
|
errno != ECONNREFUSED &&
|
|
errno != ECONNRESET &&
|
|
errno != ECONNABORTED)
|
|
log_error("connect() failed: %m");
|
|
|
|
goto finish;
|
|
}
|
|
|
|
if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->id) + 1), u->id, &n) < 0) {
|
|
log_oom();
|
|
goto finish;
|
|
}
|
|
|
|
errno = 0;
|
|
if (write(fd, message, n + 1) != n + 1) {
|
|
|
|
if (errno != EPIPE &&
|
|
errno != EAGAIN &&
|
|
errno != ENOENT &&
|
|
errno != ECONNREFUSED &&
|
|
errno != ECONNRESET &&
|
|
errno != ECONNABORTED)
|
|
log_error("Failed to write Plymouth message: %m");
|
|
|
|
goto finish;
|
|
}
|
|
|
|
finish:
|
|
if (fd >= 0)
|
|
close_nointr_nofail(fd);
|
|
|
|
free(message);
|
|
}
|
|
|
|
void manager_dispatch_bus_name_owner_changed(
|
|
Manager *m,
|
|
const char *name,
|
|
const char* old_owner,
|
|
const char *new_owner) {
|
|
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
assert(name);
|
|
|
|
if (!(u = hashmap_get(m->watch_bus, name)))
|
|
return;
|
|
|
|
UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner);
|
|
}
|
|
|
|
void manager_dispatch_bus_query_pid_done(
|
|
Manager *m,
|
|
const char *name,
|
|
pid_t pid) {
|
|
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
assert(name);
|
|
assert(pid >= 1);
|
|
|
|
if (!(u = hashmap_get(m->watch_bus, name)))
|
|
return;
|
|
|
|
UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
|
|
}
|
|
|
|
int manager_open_serialization(Manager *m, FILE **_f) {
|
|
char *path = NULL;
|
|
mode_t saved_umask;
|
|
int fd;
|
|
FILE *f;
|
|
|
|
assert(_f);
|
|
|
|
if (m->running_as == SYSTEMD_SYSTEM)
|
|
asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid());
|
|
else
|
|
asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid());
|
|
|
|
if (!path)
|
|
return -ENOMEM;
|
|
|
|
saved_umask = umask(0077);
|
|
fd = mkostemp(path, O_RDWR|O_CLOEXEC);
|
|
umask(saved_umask);
|
|
|
|
if (fd < 0) {
|
|
free(path);
|
|
return -errno;
|
|
}
|
|
|
|
unlink(path);
|
|
|
|
log_debug("Serializing state to %s", path);
|
|
free(path);
|
|
|
|
f = fdopen(fd, "w+");
|
|
if (!f)
|
|
return -errno;
|
|
|
|
*_f = f;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs) {
|
|
Iterator i;
|
|
Unit *u;
|
|
const char *t;
|
|
char **e;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(f);
|
|
assert(fds);
|
|
|
|
m->n_reloading ++;
|
|
|
|
fprintf(f, "current-job-id=%i\n", m->current_job_id);
|
|
fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr));
|
|
fprintf(f, "n-installed-jobs=%u\n", m->n_installed_jobs);
|
|
fprintf(f, "n-failed-jobs=%u\n", m->n_failed_jobs);
|
|
|
|
dual_timestamp_serialize(f, "firmware-timestamp", &m->firmware_timestamp);
|
|
dual_timestamp_serialize(f, "kernel-timestamp", &m->kernel_timestamp);
|
|
dual_timestamp_serialize(f, "loader-timestamp", &m->loader_timestamp);
|
|
dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp);
|
|
|
|
if (!in_initrd()) {
|
|
dual_timestamp_serialize(f, "userspace-timestamp", &m->userspace_timestamp);
|
|
dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp);
|
|
}
|
|
|
|
STRV_FOREACH(e, m->environment) {
|
|
_cleanup_free_ char *ce;
|
|
|
|
ce = cescape(*e);
|
|
if (ce)
|
|
fprintf(f, "env=%s\n", *e);
|
|
}
|
|
|
|
fputc('\n', f);
|
|
|
|
HASHMAP_FOREACH_KEY(u, t, m->units, i) {
|
|
if (u->id != t)
|
|
continue;
|
|
|
|
if (!unit_can_serialize(u))
|
|
continue;
|
|
|
|
/* Start marker */
|
|
fputs(u->id, f);
|
|
fputc('\n', f);
|
|
|
|
if ((r = unit_serialize(u, f, fds, serialize_jobs)) < 0) {
|
|
m->n_reloading --;
|
|
return r;
|
|
}
|
|
}
|
|
|
|
assert(m->n_reloading > 0);
|
|
m->n_reloading --;
|
|
|
|
if (ferror(f))
|
|
return -EIO;
|
|
|
|
r = bus_fdset_add_all(m, fds);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_deserialize(Manager *m, FILE *f, FDSet *fds) {
|
|
int r = 0;
|
|
|
|
assert(m);
|
|
assert(f);
|
|
|
|
log_debug("Deserializing state...");
|
|
|
|
m->n_reloading ++;
|
|
|
|
for (;;) {
|
|
char line[LINE_MAX], *l;
|
|
|
|
if (!fgets(line, sizeof(line), f)) {
|
|
if (feof(f))
|
|
r = 0;
|
|
else
|
|
r = -errno;
|
|
|
|
goto finish;
|
|
}
|
|
|
|
char_array_0(line);
|
|
l = strstrip(line);
|
|
|
|
if (l[0] == 0)
|
|
break;
|
|
|
|
if (startswith(l, "current-job-id=")) {
|
|
uint32_t id;
|
|
|
|
if (safe_atou32(l+15, &id) < 0)
|
|
log_debug("Failed to parse current job id value %s", l+15);
|
|
else
|
|
m->current_job_id = MAX(m->current_job_id, id);
|
|
} else if (startswith(l, "n-installed-jobs=")) {
|
|
uint32_t n;
|
|
|
|
if (safe_atou32(l+17, &n) < 0)
|
|
log_debug("Failed to parse installed jobs counter %s", l+17);
|
|
else
|
|
m->n_installed_jobs += n;
|
|
} else if (startswith(l, "n-failed-jobs=")) {
|
|
uint32_t n;
|
|
|
|
if (safe_atou32(l+14, &n) < 0)
|
|
log_debug("Failed to parse failed jobs counter %s", l+14);
|
|
else
|
|
m->n_failed_jobs += n;
|
|
} else if (startswith(l, "taint-usr=")) {
|
|
int b;
|
|
|
|
if ((b = parse_boolean(l+10)) < 0)
|
|
log_debug("Failed to parse taint /usr flag %s", l+10);
|
|
else
|
|
m->taint_usr = m->taint_usr || b;
|
|
} else if (startswith(l, "firmware-timestamp="))
|
|
dual_timestamp_deserialize(l+19, &m->firmware_timestamp);
|
|
else if (startswith(l, "loader-timestamp="))
|
|
dual_timestamp_deserialize(l+17, &m->loader_timestamp);
|
|
else if (startswith(l, "kernel-timestamp="))
|
|
dual_timestamp_deserialize(l+17, &m->kernel_timestamp);
|
|
else if (startswith(l, "initrd-timestamp="))
|
|
dual_timestamp_deserialize(l+17, &m->initrd_timestamp);
|
|
else if (startswith(l, "userspace-timestamp="))
|
|
dual_timestamp_deserialize(l+20, &m->userspace_timestamp);
|
|
else if (startswith(l, "finish-timestamp="))
|
|
dual_timestamp_deserialize(l+17, &m->finish_timestamp);
|
|
else if (startswith(l, "env=")) {
|
|
_cleanup_free_ char *uce = NULL;
|
|
char **e;
|
|
|
|
uce = cunescape(l+4);
|
|
if (!uce) {
|
|
r = -ENOMEM;
|
|
goto finish;
|
|
}
|
|
|
|
e = strv_env_set(m->environment, uce);
|
|
if (!e) {
|
|
r = -ENOMEM;
|
|
goto finish;
|
|
}
|
|
|
|
strv_free(m->environment);
|
|
m->environment = e;
|
|
} else
|
|
log_debug("Unknown serialization item '%s'", l);
|
|
}
|
|
|
|
for (;;) {
|
|
Unit *u;
|
|
char name[UNIT_NAME_MAX+2];
|
|
|
|
/* Start marker */
|
|
if (!fgets(name, sizeof(name), f)) {
|
|
if (feof(f))
|
|
r = 0;
|
|
else
|
|
r = -errno;
|
|
|
|
goto finish;
|
|
}
|
|
|
|
char_array_0(name);
|
|
|
|
r = manager_load_unit(m, strstrip(name), NULL, NULL, &u);
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = unit_deserialize(u, f, fds);
|
|
if (r < 0)
|
|
goto finish;
|
|
}
|
|
|
|
finish:
|
|
if (ferror(f)) {
|
|
r = -EIO;
|
|
goto finish;
|
|
}
|
|
|
|
assert(m->n_reloading > 0);
|
|
m->n_reloading --;
|
|
|
|
return r;
|
|
}
|
|
|
|
int manager_distribute_fds(Manager *m, FDSet *fds) {
|
|
Unit *u;
|
|
Iterator i;
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
HASHMAP_FOREACH(u, m->units, i) {
|
|
|
|
if (fdset_size(fds) <= 0)
|
|
break;
|
|
|
|
if (UNIT_VTABLE(u)->distribute_fds) {
|
|
r = UNIT_VTABLE(u)->distribute_fds(u, fds);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_reload(Manager *m) {
|
|
int r, q;
|
|
FILE *f;
|
|
FDSet *fds;
|
|
|
|
assert(m);
|
|
|
|
r = manager_open_serialization(m, &f);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
m->n_reloading ++;
|
|
|
|
fds = fdset_new();
|
|
if (!fds) {
|
|
m->n_reloading --;
|
|
r = -ENOMEM;
|
|
goto finish;
|
|
}
|
|
|
|
r = manager_serialize(m, f, fds, true);
|
|
if (r < 0) {
|
|
m->n_reloading --;
|
|
goto finish;
|
|
}
|
|
|
|
if (fseeko(f, 0, SEEK_SET) < 0) {
|
|
m->n_reloading --;
|
|
r = -errno;
|
|
goto finish;
|
|
}
|
|
|
|
/* From here on there is no way back. */
|
|
manager_clear_jobs_and_units(m);
|
|
manager_undo_generators(m);
|
|
lookup_paths_free(&m->lookup_paths);
|
|
|
|
/* Find new unit paths */
|
|
manager_run_generators(m);
|
|
|
|
q = lookup_paths_init(
|
|
&m->lookup_paths, m->running_as, true,
|
|
m->generator_unit_path,
|
|
m->generator_unit_path_early,
|
|
m->generator_unit_path_late);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
manager_build_unit_path_cache(m);
|
|
|
|
/* First, enumerate what we can from all config files */
|
|
q = manager_enumerate(m);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
/* Second, deserialize our stored data */
|
|
q = manager_deserialize(m, f, fds);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
fclose(f);
|
|
f = NULL;
|
|
|
|
/* Third, fire things up! */
|
|
q = manager_coldplug(m);
|
|
if (q < 0)
|
|
r = q;
|
|
|
|
assert(m->n_reloading > 0);
|
|
m->n_reloading--;
|
|
|
|
finish:
|
|
if (f)
|
|
fclose(f);
|
|
|
|
if (fds)
|
|
fdset_free(fds);
|
|
|
|
return r;
|
|
}
|
|
|
|
static bool manager_is_booting_or_shutting_down(Manager *m) {
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
|
|
/* Is the initial job still around? */
|
|
if (manager_get_job(m, m->default_unit_job_id))
|
|
return true;
|
|
|
|
/* Is there a job for the shutdown target? */
|
|
u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET);
|
|
if (u)
|
|
return !!u->job;
|
|
|
|
return false;
|
|
}
|
|
|
|
void manager_reset_failed(Manager *m) {
|
|
Unit *u;
|
|
Iterator i;
|
|
|
|
assert(m);
|
|
|
|
HASHMAP_FOREACH(u, m->units, i)
|
|
unit_reset_failed(u);
|
|
}
|
|
|
|
bool manager_unit_pending_inactive(Manager *m, const char *name) {
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
assert(name);
|
|
|
|
/* Returns true if the unit is inactive or going down */
|
|
u = manager_get_unit(m, name);
|
|
if (!u)
|
|
return true;
|
|
|
|
return unit_pending_inactive(u);
|
|
}
|
|
|
|
void manager_check_finished(Manager *m) {
|
|
char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
|
|
usec_t firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec;
|
|
|
|
assert(m);
|
|
|
|
if (hashmap_size(m->jobs) > 0) {
|
|
manager_jobs_in_progress_mod_timer(m);
|
|
return;
|
|
}
|
|
|
|
/* Notify Type=idle units that we are done now */
|
|
close_pipe(m->idle_pipe);
|
|
|
|
/* Turn off confirm spawn now */
|
|
m->confirm_spawn = false;
|
|
|
|
manager_unwatch_jobs_in_progress(m);
|
|
|
|
if (dual_timestamp_is_set(&m->finish_timestamp))
|
|
return;
|
|
|
|
dual_timestamp_get(&m->finish_timestamp);
|
|
|
|
if (m->running_as == SYSTEMD_SYSTEM && detect_container(NULL) <= 0) {
|
|
|
|
/* Note that m->kernel_usec.monotonic is always at 0,
|
|
* and m->firmware_usec.monotonic and
|
|
* m->loader_usec.monotonic should be considered
|
|
* negative values. */
|
|
|
|
firmware_usec = m->firmware_timestamp.monotonic - m->loader_timestamp.monotonic;
|
|
loader_usec = m->loader_timestamp.monotonic - m->kernel_timestamp.monotonic;
|
|
userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
|
|
total_usec = m->firmware_timestamp.monotonic + m->finish_timestamp.monotonic;
|
|
|
|
if (dual_timestamp_is_set(&m->initrd_timestamp)) {
|
|
|
|
kernel_usec = m->initrd_timestamp.monotonic - m->kernel_timestamp.monotonic;
|
|
initrd_usec = m->userspace_timestamp.monotonic - m->initrd_timestamp.monotonic;
|
|
|
|
if (!log_on_console())
|
|
log_struct(LOG_INFO,
|
|
MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
|
|
"KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
|
|
"INITRD_USEC=%llu", (unsigned long long) initrd_usec,
|
|
"USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
|
|
"MESSAGE=Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.",
|
|
format_timespan(kernel, sizeof(kernel), kernel_usec),
|
|
format_timespan(initrd, sizeof(initrd), initrd_usec),
|
|
format_timespan(userspace, sizeof(userspace), userspace_usec),
|
|
format_timespan(sum, sizeof(sum), total_usec),
|
|
NULL);
|
|
} else {
|
|
kernel_usec = m->userspace_timestamp.monotonic - m->kernel_timestamp.monotonic;
|
|
initrd_usec = 0;
|
|
|
|
if (!log_on_console())
|
|
log_struct(LOG_INFO,
|
|
MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
|
|
"KERNEL_USEC=%llu", (unsigned long long) kernel_usec,
|
|
"USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
|
|
"MESSAGE=Startup finished in %s (kernel) + %s (userspace) = %s.",
|
|
format_timespan(kernel, sizeof(kernel), kernel_usec),
|
|
format_timespan(userspace, sizeof(userspace), userspace_usec),
|
|
format_timespan(sum, sizeof(sum), total_usec),
|
|
NULL);
|
|
}
|
|
} else {
|
|
firmware_usec = loader_usec = initrd_usec = kernel_usec = 0;
|
|
total_usec = userspace_usec = m->finish_timestamp.monotonic - m->userspace_timestamp.monotonic;
|
|
|
|
if (!log_on_console())
|
|
log_struct(LOG_INFO,
|
|
MESSAGE_ID(SD_MESSAGE_STARTUP_FINISHED),
|
|
"USERSPACE_USEC=%llu", (unsigned long long) userspace_usec,
|
|
"MESSAGE=Startup finished in %s.",
|
|
format_timespan(sum, sizeof(sum), total_usec),
|
|
NULL);
|
|
}
|
|
|
|
bus_broadcast_finished(m, firmware_usec, loader_usec, kernel_usec, initrd_usec, userspace_usec, total_usec);
|
|
|
|
sd_notifyf(false,
|
|
"READY=1\nSTATUS=Startup finished in %s.",
|
|
format_timespan(sum, sizeof(sum), total_usec));
|
|
}
|
|
|
|
static int create_generator_dir(Manager *m, char **generator, const char *name) {
|
|
char *p;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(generator);
|
|
assert(name);
|
|
|
|
if (*generator)
|
|
return 0;
|
|
|
|
if (m->running_as == SYSTEMD_SYSTEM && getpid() == 1) {
|
|
|
|
p = strappend("/run/systemd/", name);
|
|
if (!p)
|
|
return log_oom();
|
|
|
|
r = mkdir_p_label(p, 0755);
|
|
if (r < 0) {
|
|
log_error("Failed to create generator directory %s: %s",
|
|
p, strerror(-r));
|
|
free(p);
|
|
return r;
|
|
}
|
|
} else {
|
|
p = strjoin("/tmp/systemd-", name, ".XXXXXX", NULL);
|
|
if (!p)
|
|
return log_oom();
|
|
|
|
if (!mkdtemp(p)) {
|
|
free(p);
|
|
log_error("Failed to create generator directory %s: %m",
|
|
p);
|
|
return -errno;
|
|
}
|
|
}
|
|
|
|
*generator = p;
|
|
return 0;
|
|
}
|
|
|
|
static void trim_generator_dir(Manager *m, char **generator) {
|
|
assert(m);
|
|
assert(generator);
|
|
|
|
if (!*generator)
|
|
return;
|
|
|
|
if (rmdir(*generator) >= 0) {
|
|
free(*generator);
|
|
*generator = NULL;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
void manager_run_generators(Manager *m) {
|
|
DIR *d = NULL;
|
|
const char *generator_path;
|
|
const char *argv[5];
|
|
mode_t u;
|
|
int r;
|
|
|
|
assert(m);
|
|
|
|
generator_path = m->running_as == SYSTEMD_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH;
|
|
d = opendir(generator_path);
|
|
if (!d) {
|
|
if (errno == ENOENT)
|
|
return;
|
|
|
|
log_error("Failed to enumerate generator directory %s: %m",
|
|
generator_path);
|
|
return;
|
|
}
|
|
|
|
r = create_generator_dir(m, &m->generator_unit_path, "generator");
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = create_generator_dir(m, &m->generator_unit_path_early, "generator.early");
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
r = create_generator_dir(m, &m->generator_unit_path_late, "generator.late");
|
|
if (r < 0)
|
|
goto finish;
|
|
|
|
argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */
|
|
argv[1] = m->generator_unit_path;
|
|
argv[2] = m->generator_unit_path_early;
|
|
argv[3] = m->generator_unit_path_late;
|
|
argv[4] = NULL;
|
|
|
|
u = umask(0022);
|
|
execute_directory(generator_path, d, (char**) argv);
|
|
umask(u);
|
|
|
|
trim_generator_dir(m, &m->generator_unit_path);
|
|
trim_generator_dir(m, &m->generator_unit_path_early);
|
|
trim_generator_dir(m, &m->generator_unit_path_late);
|
|
|
|
finish:
|
|
if (d)
|
|
closedir(d);
|
|
}
|
|
|
|
static void remove_generator_dir(Manager *m, char **generator) {
|
|
assert(m);
|
|
assert(generator);
|
|
|
|
if (!*generator)
|
|
return;
|
|
|
|
strv_remove(m->lookup_paths.unit_path, *generator);
|
|
rm_rf(*generator, false, true, false);
|
|
|
|
free(*generator);
|
|
*generator = NULL;
|
|
}
|
|
|
|
void manager_undo_generators(Manager *m) {
|
|
assert(m);
|
|
|
|
remove_generator_dir(m, &m->generator_unit_path);
|
|
remove_generator_dir(m, &m->generator_unit_path_early);
|
|
remove_generator_dir(m, &m->generator_unit_path_late);
|
|
}
|
|
|
|
int manager_set_default_controllers(Manager *m, char **controllers) {
|
|
char **l;
|
|
|
|
assert(m);
|
|
|
|
l = strv_copy(controllers);
|
|
if (!l)
|
|
return -ENOMEM;
|
|
|
|
strv_free(m->default_controllers);
|
|
m->default_controllers = l;
|
|
|
|
cg_shorten_controllers(m->default_controllers);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) {
|
|
int i;
|
|
|
|
assert(m);
|
|
|
|
for (i = 0; i < RLIMIT_NLIMITS; i++) {
|
|
if (!default_rlimit[i])
|
|
continue;
|
|
|
|
m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1);
|
|
if (!m->rlimit[i])
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void manager_recheck_journal(Manager *m) {
|
|
Unit *u;
|
|
|
|
assert(m);
|
|
|
|
if (m->running_as != SYSTEMD_SYSTEM)
|
|
return;
|
|
|
|
u = manager_get_unit(m, SPECIAL_JOURNALD_SOCKET);
|
|
if (u && SOCKET(u)->state != SOCKET_RUNNING) {
|
|
log_close_journal();
|
|
return;
|
|
}
|
|
|
|
u = manager_get_unit(m, SPECIAL_JOURNALD_SERVICE);
|
|
if (u && SERVICE(u)->state != SERVICE_RUNNING) {
|
|
log_close_journal();
|
|
return;
|
|
}
|
|
|
|
/* Hmm, OK, so the socket is fully up and the service is up
|
|
* too, then let's make use of the thing. */
|
|
log_open();
|
|
}
|
|
|
|
void manager_set_show_status(Manager *m, bool b) {
|
|
assert(m);
|
|
|
|
if (m->running_as != SYSTEMD_SYSTEM)
|
|
return;
|
|
|
|
m->show_status = b;
|
|
|
|
if (b)
|
|
touch("/run/systemd/show-status");
|
|
else
|
|
unlink("/run/systemd/show-status");
|
|
}
|
|
|
|
static bool manager_get_show_status(Manager *m) {
|
|
assert(m);
|
|
|
|
if (m->running_as != SYSTEMD_SYSTEM)
|
|
return false;
|
|
|
|
if (m->show_status)
|
|
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();
|
|
}
|
|
|
|
void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) {
|
|
va_list ap;
|
|
|
|
if (!manager_get_show_status(m))
|
|
return;
|
|
|
|
/* XXX We should totally drop the check for ephemeral here
|
|
* and thus effectively make 'Type=idle' pointless. */
|
|
if (ephemeral && m->n_on_console > 0)
|
|
return;
|
|
|
|
if (!manager_is_booting_or_shutting_down(m))
|
|
return;
|
|
|
|
va_start(ap, format);
|
|
status_vprintf(status, true, ephemeral, format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
void watch_init(Watch *w) {
|
|
assert(w);
|
|
|
|
w->type = WATCH_INVALID;
|
|
w->fd = -1;
|
|
}
|