-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
#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 <linux/kd.h>
-#include <libcgroup.h>
#include <termios.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <dirent.h>
+
+#ifdef HAVE_AUDIT
+#include <libaudit.h>
+#endif
#include "manager.h"
#include "hashmap.h"
#include "ratelimit.h"
#include "cgroup.h"
#include "mount-setup.h"
-#include "utmp-wtmp.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"
/* As soon as 16 units are in our GC queue, make sure to run a gc sweep */
#define GC_QUEUE_ENTRIES_MAX 16
/* 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)
+/* Where clients shall send notification messages to */
+#define NOTIFY_SOCKET "/org/freedesktop/systemd1/notify"
+
+static int manager_setup_notify(Manager *m) {
+ union {
+ struct sockaddr sa;
+ struct sockaddr_un un;
+ } sa;
+ struct epoll_event ev;
+ int one = 1;
+
+ assert(m);
+
+ m->notify_watch.type = WATCH_NOTIFY;
+ if ((m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) {
+ log_error("Failed to allocate notification socket: %m");
+ return -errno;
+ }
+
+ zero(sa);
+ sa.sa.sa_family = AF_UNIX;
+
+ if (getpid() != 1)
+ snprintf(sa.un.sun_path+1, sizeof(sa.un.sun_path)-1, NOTIFY_SOCKET "/%llu", random_ull());
+ else
+ strncpy(sa.un.sun_path+1, NOTIFY_SOCKET, sizeof(sa.un.sun_path)-1);
+
+ 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;
+ }
+
+ 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;
+
+ if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0)
+ return -errno;
+
+ if (!(m->notify_socket = strdup(sa.un.sun_path+1)))
+ return -ENOMEM;
+
+ log_debug("Using notification socket %s", m->notify_socket);
+
+ return 0;
+}
+
static int enable_special_signals(Manager *m) {
char fd;
assert_se(sigaction(SIGCHLD, &sa, NULL) == 0);
assert_se(sigemptyset(&mask) == 0);
- assert_se(sigaddset(&mask, SIGCHLD) == 0);
- assert_se(sigaddset(&mask, SIGTERM) == 0);
- assert_se(sigaddset(&mask, SIGHUP) == 0);
- assert_se(sigaddset(&mask, SIGUSR1) == 0);
- assert_se(sigaddset(&mask, SIGUSR2) == 0);
- assert_se(sigaddset(&mask, SIGINT) == 0); /* Kernel sends us this on control-alt-del */
- assert_se(sigaddset(&mask, SIGWINCH) == 0); /* Kernel sends us this on kbrequest (alt-arrowup) */
- assert_se(sigaddset(&mask, SIGPWR) == 0); /* Some kernel drivers and upsd send us this on power failure */
+
+ 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 */
+ -1);
assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0);
m->signal_watch.type = WATCH_SIGNAL;
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0)
return -errno;
- if (m->running_as == MANAGER_INIT)
+ if (m->running_as == MANAGER_SYSTEM)
return enable_special_signals(m);
return 0;
}
-static char** session_dirs(void) {
- const char *home, *e;
- char *config_home = NULL, *data_home = NULL;
- char **config_dirs = NULL, **data_dirs = NULL;
- char **r = NULL, **t;
-
- /* Implement the mechanisms defined in
- *
- * http://standards.freedesktop.org/basedir-spec/basedir-spec-0.6.html
- *
- * We look in both the config and the data dirs because we
- * want to encourage that distributors ship their unit files
- * as data, and allow overriding as configuration.
- */
-
- home = getenv("HOME");
-
- if ((e = getenv("XDG_CONFIG_HOME"))) {
- if (asprintf(&config_home, "%s/systemd/session", e) < 0)
- goto fail;
-
- } else if (home) {
- if (asprintf(&config_home, "%s/.config/systemd/session", home) < 0)
- goto fail;
- }
-
- if ((e = getenv("XDG_CONFIG_DIRS")))
- if (!(config_dirs = strv_split(e, ":")))
- goto fail;
-
- /* We don't treat /etc/xdg/systemd here as the spec
- * suggests because we assume that that is a link to
- * /etc/systemd/ anyway. */
-
- if ((e = getenv("XDG_DATA_HOME"))) {
- if (asprintf(&data_home, "%s/systemd/session", e) < 0)
- goto fail;
-
- } else if (home) {
- if (asprintf(&data_home, "%s/.local/share/systemd/session", home) < 0)
- goto fail;
- }
-
- if ((e = getenv("XDG_DATA_DIRS")))
- data_dirs = strv_split(e, ":");
- else
- data_dirs = strv_new("/usr/local/share", "/usr/share", NULL);
-
- if (!data_dirs)
- goto fail;
-
- /* Now merge everything we found. */
- if (config_home) {
- if (!(t = strv_append(r, config_home)))
- goto fail;
- strv_free(r);
- r = t;
- }
-
- if (!(t = strv_merge_concat(r, config_dirs, "/systemd/session")))
- goto finish;
- strv_free(r);
- r = t;
-
- if (!(t = strv_append(r, SESSION_CONFIG_UNIT_PATH)))
- goto fail;
- strv_free(r);
- r = t;
-
- if (data_home) {
- if (!(t = strv_append(r, data_home)))
- goto fail;
- strv_free(r);
- r = t;
- }
-
- if (!(t = strv_merge_concat(r, data_dirs, "/systemd/session")))
- goto fail;
- strv_free(r);
- r = t;
-
- if (!(t = strv_append(r, SESSION_DATA_UNIT_PATH)))
- goto fail;
- strv_free(r);
- r = t;
-
- if (!strv_path_make_absolute_cwd(r))
- goto fail;
-
-finish:
- free(config_home);
- strv_free(config_dirs);
- free(data_home);
- strv_free(data_dirs);
-
- return r;
-
-fail:
- strv_free(r);
- r = NULL;
- goto finish;
-}
-
-static int manager_find_paths(Manager *m) {
- const char *e;
- char *t;
-
- assert(m);
-
- /* First priority is whatever has been passed to us via env
- * vars */
- if ((e = getenv("SYSTEMD_UNIT_PATH")))
- if (!(m->unit_path = split_path_and_make_absolute(e)))
- return -ENOMEM;
-
- if (strv_isempty(m->unit_path)) {
-
- /* Nothing is set, so let's figure something out. */
- strv_free(m->unit_path);
-
- if (m->running_as == MANAGER_SESSION) {
- if (!(m->unit_path = session_dirs()))
- return -ENOMEM;
- } else
- if (!(m->unit_path = strv_new(
- SYSTEM_CONFIG_UNIT_PATH, /* /etc/systemd/system/ */
- SYSTEM_DATA_UNIT_PATH, /* /lib/systemd/system/ */
- NULL)))
- return -ENOMEM;
- }
-
- if (m->running_as == MANAGER_INIT) {
- /* /etc/init.d/ compatibility does not matter to users */
-
- if ((e = getenv("SYSTEMD_SYSVINIT_PATH")))
- if (!(m->sysvinit_path = split_path_and_make_absolute(e)))
- return -ENOMEM;
-
- if (strv_isempty(m->sysvinit_path)) {
- strv_free(m->sysvinit_path);
-
- if (!(m->sysvinit_path = strv_new(
- SYSTEM_SYSVINIT_PATH, /* /etc/init.d/ */
- 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")))
- return -ENOMEM;
- log_debug("Looking for unit files in:\n\t%s", t);
- free(t);
-
- if (!strv_isempty(m->sysvinit_path)) {
-
- if (!(t = strv_join(m->sysvinit_path, "\n\t")))
- return -ENOMEM;
-
- log_debug("Looking for SysV init scripts in:\n\t%s", t);
- free(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(ManagerRunningAs running_as, bool confirm_spawn, Manager **_m) {
+int manager_new(ManagerRunningAs running_as, Manager **_m) {
Manager *m;
int r = -ENOMEM;
if (!(m = new0(Manager, 1)))
return -ENOMEM;
- m->boot_timestamp = now(CLOCK_REALTIME);
+ dual_timestamp_get(&m->startup_timestamp);
m->running_as = running_as;
- m->confirm_spawn = confirm_spawn;
- m->name_data_slot = -1;
+ m->name_data_slot = m->subscribed_data_slot = -1;
m->exit_code = _MANAGER_EXIT_CODE_INVALID;
+ m->pin_cgroupfs_fd = -1;
+
+#ifdef HAVE_AUDIT
+ m->audit_fd = -1;
+#endif
m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = 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 */
if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0)
goto fail;
- if ((r = manager_find_paths(m)) < 0)
+ if ((r = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0)
goto fail;
if ((r = manager_setup_signals(m)) < 0)
if ((r = manager_setup_cgroup(m)) < 0)
goto fail;
+ if ((r = manager_setup_notify(m)) < 0)
+ goto fail;
+
/* Try to connect to the busses, if possible. */
- if ((r = bus_init_system(m)) < 0 ||
- (r = bus_init_api(m)) < 0)
+ if ((r = bus_init(m)) < 0)
goto fail;
+#ifdef HAVE_AUDIT
+ if ((m->audit_fd = audit_open()) < 0)
+ log_error("Failed to connect to audit log: %m");
+#endif
+
*_m = m;
return 0;
while ((meta = m->cleanup_queue)) {
assert(meta->in_cleanup_queue);
- unit_free(UNIT(meta));
+ unit_free((Unit*) meta);
n++;
}
while ((meta = m->gc_queue)) {
assert(meta->in_gc_queue);
- unit_gc_sweep(UNIT(meta), gc_marker);
+ unit_gc_sweep((Unit*) meta, gc_marker);
LIST_REMOVE(Meta, gc_queue, m->gc_queue, meta);
meta->in_gc_queue = false;
meta->gc_marker == gc_marker + GC_OFFSET_UNSURE) {
log_debug("Collecting %s", meta->id);
meta->gc_marker = gc_marker + GC_OFFSET_BAD;
- unit_add_to_cleanup_queue(UNIT(meta));
+ unit_add_to_cleanup_queue((Unit*) meta);
}
}
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->transaction_jobs));
+ assert(hashmap_isempty(m->jobs));
+ assert(hashmap_isempty(m->units));
}
void manager_free(Manager *m) {
assert(m);
- manager_dispatch_cleanup_queue(m);
manager_clear_jobs_and_units(m);
for (c = 0; c < _UNIT_TYPE_MAX; c++)
* around */
manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE);
- bus_done_api(m);
- bus_done_system(m);
+ bus_done(m);
hashmap_free(m->units);
hashmap_free(m->jobs);
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);
- strv_free(m->unit_path);
- strv_free(m->sysvinit_path);
- strv_free(m->sysvrcnd_path);
- strv_free(m->environment);
+#ifdef HAVE_AUDIT
+ if (m->audit_fd >= 0)
+ audit_close(m->audit_fd);
+#endif
- free(m->cgroup_controller);
- free(m->cgroup_hierarchy);
+ free(m->notify_socket);
+ free(m->console);
+
+ lookup_paths_free(&m->lookup_paths);
+ strv_free(m->environment);
hashmap_free(m->cgroup_bondings);
+ set_free_free(m->unit_path_cache);
free(m);
}
if (u->meta.id != k)
continue;
- if (UNIT_VTABLE(u)->coldplug)
- if ((q = UNIT_VTABLE(u)->coldplug(u)) < 0)
- r = q;
+ if ((q = unit_coldplug(u)) < 0)
+ r = q;
}
return r;
}
+static void manager_build_unit_path_cache(Manager *m) {
+ char **i;
+ DIR *d = NULL;
+ int r;
+
+ assert(m);
+
+ set_free_free(m->unit_path_cache);
+
+ if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) {
+ 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;
+
+ if (!(d = opendir(*i))) {
+ log_error("Failed to open directory: %m");
+ continue;
+ }
+
+ while ((de = readdir(d))) {
+ char *p;
+
+ if (ignore_file(de->d_name))
+ continue;
+
+ if (asprintf(&p, "%s/%s", streq(*i, "/") ? "" : *i, de->d_name) < 0) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ if ((r = set_put(m->unit_path_cache, p)) < 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;
+
+ if (d)
+ closedir(d);
+}
+
int manager_startup(Manager *m, FILE *serialization, FDSet *fds) {
int r, q;
assert(m);
+ 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_deserializing ++;
+
/* First, enumerate what we can from all config files */
r = manager_enumerate(m);
if ((q = manager_coldplug(m)) < 0)
r = q;
- /* Now that the initial devices are available, let's see if we
- * can write the utmp file */
- manager_write_utmp_reboot(m);
+ if (serialization) {
+ assert(m->n_deserializing > 0);
+ m->n_deserializing --;
+ }
return r;
}
other->object_list = NULL;
transaction_delete_job(m, other, true);
}
+static bool job_is_conflicted_by(Job *j) {
+ JobDependency *l;
+
+ assert(j);
+
+ /* Returns true if this job is pulled in by a least one
+ * ConflictedBy dependency. */
+
+ LIST_FOREACH(object, l, j->object_list)
+ if (l->conflicts)
+ return true;
+
+ return false;
+}
static int delete_one_unmergeable_job(Manager *m, Job *j) {
Job *k;
/* Ok, we found two that conflict, let's see if we can
* drop one of them */
- if (!j->matters_to_anchor)
+ if (!j->matters_to_anchor && !k->matters_to_anchor) {
+
+ /* Both jobs don't matter, so let's
+ * find the one that is smarter to
+ * remove. Let's think positive and
+ * rather remove stops then starts --
+ * except if something is being
+ * stopped because it is conflicted by
+ * another unit in which case we
+ * rather remove the start. */
+
+ log_debug("Looking at job %s/%s conflicted_by=%s", j->unit->meta.id, job_type_to_string(j->type), yes_no(j->type == JOB_STOP && job_is_conflicted_by(j)));
+ log_debug("Looking at job %s/%s conflicted_by=%s", k->unit->meta.id, job_type_to_string(k->type), yes_no(k->type == JOB_STOP && job_is_conflicted_by(k)));
+
+ if (j->type == JOB_STOP) {
+
+ if (job_is_conflicted_by(j))
+ d = k;
+ else
+ d = j;
+
+ } else if (k->type == JOB_STOP) {
+
+ if (job_is_conflicted_by(k))
+ d = j;
+ else
+ d = k;
+ } else
+ d = j;
+
+ } else if (!j->matters_to_anchor)
d = j;
else if (!k->matters_to_anchor)
d = k;
return -ENOEXEC;
/* Ok, we can drop one, so let's do so. */
- log_debug("Trying to fix job merging by deleting job %s/%s", d->unit->meta.id, job_type_to_string(d->type));
+ log_debug("Fixing conflicting jobs by deleting job %s/%s", d->unit->meta.id, job_type_to_string(d->type));
transaction_delete_job(m, d, true);
return 0;
}
return -EINVAL;
}
-static int transaction_merge_jobs(Manager *m) {
+static int transaction_merge_jobs(Manager *m, DBusError *e) {
Job *j;
Iterator i;
int r;
t = j->type;
LIST_FOREACH(transaction, k, j->transaction_next) {
- if ((r = job_type_merge(&t, k->type)) >= 0)
+ if (job_type_merge(&t, k->type) >= 0)
continue;
/* OK, we could not merge all jobs for this
return -EAGAIN;
/* We couldn't merge anything. Failure */
+ dbus_set_error(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.",
+ job_type_to_string(t), job_type_to_string(k->type), k->unit->meta.id);
return r;
}
}
return false;
}
-static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation) {
+static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation, DBusError *e) {
Iterator i;
Unit *u;
int r;
/* Does a recursive sweep through the ordering graph, looking
* for a cycle. If we find cycle we try to break it. */
- /* Did we find a cycle? */
- if (j->marker && j->generation == generation) {
- Job *k;
+ /* Have we seen this before? */
+ if (j->generation == generation) {
+ Job *k, *delete;
- /* So, we already have been here. We have a
- * cycle. Let's try to break it. We go backwards in
- * our path and try to find a suitable job to
- * remove. We use the marker to find our way back,
- * since smart how we are we stored our way back in
- * there. */
+ /* If the marker is NULL we have been here already and
+ * decided the job was loop-free from here. Hence
+ * shortcut things and return right-away. */
+ if (!j->marker)
+ return 0;
- log_debug("Found ordering cycle on %s/%s", j->unit->meta.id, job_type_to_string(j->type));
+ /* So, the marker is not NULL and we already have been
+ * here. We have a cycle. Let's try to break it. We go
+ * backwards in our path and try to find a suitable
+ * job to remove. We use the marker to find our way
+ * back, since smart how we are we stored our way back
+ * in there. */
+ log_warning("Found ordering cycle on %s/%s", j->unit->meta.id, job_type_to_string(j->type));
- for (k = from; k; k = (k->generation == generation ? k->marker : NULL)) {
+ delete = NULL;
+ for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) {
- log_debug("Walked on cycle path to %s/%s", k->unit->meta.id, job_type_to_string(k->type));
+ log_info("Walked on cycle path to %s/%s", k->unit->meta.id, job_type_to_string(k->type));
- if (!k->installed &&
+ if (!delete &&
+ !k->installed &&
!unit_matters_to_anchor(k->unit, k)) {
/* Ok, we can drop this one, so let's
* do so. */
- log_debug("Breaking order cycle by deleting job %s/%s", k->unit->meta.id, job_type_to_string(k->type));
- transaction_delete_unit(m, k->unit);
- return -EAGAIN;
+ delete = k;
}
/* Check if this in fact was the beginning of
break;
}
- log_debug("Unable to break cycle");
+ if (delete) {
+ log_warning("Breaking ordering cycle by deleting job %s/%s", delete->unit->meta.id, job_type_to_string(delete->type));
+ transaction_delete_unit(m, delete->unit);
+ return -EAGAIN;
+ }
+
+ log_error("Unable to break cycle");
+
+ dbus_set_error(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, "Transaction order is cyclic. See system logs for details.");
return -ENOEXEC;
}
/* Make the marker point to where we come from, so that we can
- * find our way backwards if we want to break a cycle */
- j->marker = from;
+ * find our way backwards if we want to break a cycle. We use
+ * a special marker for the beginning: we point to
+ * ourselves. */
+ j->marker = from ? from : j;
j->generation = generation;
/* We assume that the the dependencies are bidirectional, and
if (!(o = u->meta.job))
continue;
- if ((r = transaction_verify_order_one(m, o, j, generation)) < 0)
+ if ((r = transaction_verify_order_one(m, o, j, generation, e)) < 0)
return r;
}
return 0;
}
-static int transaction_verify_order(Manager *m, unsigned *generation) {
+static int transaction_verify_order(Manager *m, unsigned *generation, DBusError *e) {
Job *j;
int r;
Iterator i;
+ unsigned g;
assert(m);
assert(generation);
/* Check if the ordering graph is cyclic. If it is, try to fix
* that up by dropping one of the jobs. */
+ g = (*generation)++;
+
HASHMAP_FOREACH(j, m->transaction_jobs, i)
- if ((r = transaction_verify_order_one(m, j, NULL, (*generation)++)) < 0)
+ if ((r = transaction_verify_order_one(m, j, NULL, g, e)) < 0)
return r;
return 0;
} while (again);
}
-static int transaction_is_destructive(Manager *m) {
+static int transaction_is_destructive(Manager *m, DBusError *e) {
Iterator i;
Job *j;
if (j->unit->meta.job &&
j->unit->meta.job != j &&
- !job_type_is_superset(j->type, j->unit->meta.job->type))
+ !job_type_is_superset(j->type, j->unit->meta.job->type)) {
+
+ dbus_set_error(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive.");
return -EEXIST;
+ }
}
return 0;
j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit));
changes_existing_job =
- j->unit->meta.job && job_type_is_conflicting(j->type, j->unit->meta.job->state);
+ j->unit->meta.job && job_type_is_conflicting(j->type, j->unit->meta.job->type);
if (!stops_running_service && !changes_existing_job)
continue;
if (stops_running_service)
- log_debug("%s/%s would stop a running service.", j->unit->meta.id, job_type_to_string(j->type));
+ log_info("%s/%s would stop a running service.", j->unit->meta.id, job_type_to_string(j->type));
if (changes_existing_job)
- log_debug("%s/%s would change existing job.", j->unit->meta.id, job_type_to_string(j->type));
+ log_info("%s/%s would change existing job.", j->unit->meta.id, job_type_to_string(j->type));
/* Ok, let's get rid of this */
- log_debug("Deleting %s/%s to minimize impact.", j->unit->meta.id, job_type_to_string(j->type));
+ log_info("Deleting %s/%s to minimize impact.", j->unit->meta.id, job_type_to_string(j->type));
transaction_delete_job(m, j, true);
again = true;
j->unit->meta.job = j;
j->installed = true;
+ m->n_installed_jobs ++;
/* We're fully installed. Now let's free data we don't
* need anymore. */
job_add_to_run_queue(j);
job_add_to_dbus_queue(j);
+ job_start_timer(j);
}
/* As last step, kill all remaining job dependencies. */
return r;
}
-static int transaction_activate(Manager *m, JobMode mode) {
+static int transaction_activate(Manager *m, JobMode mode, DBusError *e) {
int r;
unsigned generation = 1;
/* Second step: Try not to stop any running services if
* we don't have to. Don't try to reverse running
* jobs if we don't have to. */
- transaction_minimize_impact(m);
+ if (mode != JOB_ISOLATE)
+ transaction_minimize_impact(m);
/* Third step: Drop redundant jobs */
transaction_drop_redundant(m);
/* Fifth step: verify order makes sense and correct
* cycles if necessary and possible */
- if ((r = transaction_verify_order(m, &generation)) >= 0)
+ if ((r = transaction_verify_order(m, &generation, e)) >= 0)
break;
if (r != -EAGAIN) {
- log_debug("Requested transaction contains an unfixable cyclic ordering dependency: %s", strerror(-r));
+ log_warning("Requested transaction contains an unfixable cyclic ordering dependency: %s", bus_error(e, r));
goto rollback;
}
/* Sixth step: let's drop unmergeable entries if
* necessary and possible, merge entries we can
* merge */
- if ((r = transaction_merge_jobs(m)) >= 0)
+ if ((r = transaction_merge_jobs(m, e)) >= 0)
break;
if (r != -EAGAIN) {
- log_debug("Requested transaction contains unmergable jobs: %s", strerror(-r));
+ log_warning("Requested transaction contains unmergable jobs: %s", bus_error(e, r));
goto rollback;
}
/* Ninth step: check whether we can actually apply this */
if (mode == JOB_FAIL)
- if ((r = transaction_is_destructive(m)) < 0) {
- log_debug("Requested transaction contradicts existing jobs: %s", strerror(-r));
+ if ((r = transaction_is_destructive(m, e)) < 0) {
+ log_notice("Requested transaction contradicts existing jobs: %s", bus_error(e, r));
goto rollback;
}
/* Tenth step: apply changes */
if ((r = transaction_apply(m)) < 0) {
- log_debug("Failed to apply transaction: %s", strerror(-r));
+ log_warning("Failed to apply transaction: %s", strerror(-r));
goto rollback;
}
static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) {
Job *j, *f;
- int r;
assert(m);
assert(unit);
LIST_PREPEND(Job, transaction, f, j);
- if ((r = hashmap_replace(m->transaction_jobs, unit, f)) < 0) {
+ if (hashmap_replace(m->transaction_jobs, unit, f) < 0) {
job_free(j);
return NULL;
}
Job *by,
bool matters,
bool override,
+ bool conflicts,
+ DBusError *e,
Job **_ret) {
Job *ret;
Iterator i;
assert(type < _JOB_TYPE_MAX);
assert(unit);
- if (unit->meta.load_state != UNIT_LOADED)
+ if (unit->meta.load_state != UNIT_LOADED &&
+ unit->meta.load_state != UNIT_ERROR &&
+ unit->meta.load_state != UNIT_MASKED) {
+ dbus_set_error(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->meta.id);
+ return -EINVAL;
+ }
+
+ if (type != JOB_STOP && unit->meta.load_state == UNIT_ERROR) {
+ dbus_set_error(e, BUS_ERROR_LOAD_FAILED,
+ "Unit %s failed to load: %s. "
+ "You might find more information in the system logs.",
+ unit->meta.id,
+ strerror(-unit->meta.load_error));
return -EINVAL;
+ }
+
+ if (type != JOB_STOP && unit->meta.load_state == UNIT_MASKED) {
+ dbus_set_error(e, BUS_ERROR_MASKED, "Unit %s is masked.", unit->meta.id);
+ return -EINVAL;
+ }
- if (!unit_job_is_applicable(unit, type))
+ if (!unit_job_is_applicable(unit, type)) {
+ dbus_set_error(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, "Job type %s is not applicable for unit %s.", job_type_to_string(type), unit->meta.id);
return -EBADR;
+ }
/* First add the job. */
if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new)))
return -ENOMEM;
/* Then, add a link to the job. */
- if (!job_dependency_new(by, ret, matters))
+ if (!job_dependency_new(by, ret, matters, conflicts))
return -ENOMEM;
if (is_new) {
/* Finally, recursively add in all dependencies. */
if (type == JOB_START || type == JOB_RELOAD_OR_START) {
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
+ if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, e, NULL)) < 0 && r != -EBADR)
goto fail;
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, NULL)) < 0 && r != -EBADR)
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
+ if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, e, NULL)) < 0 && r != -EBADR) {
+ log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
+
+ if (e)
+ dbus_error_free(e);
+ }
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_WANTS], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, NULL)) < 0)
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
+ if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, e, NULL)) < 0) {
+ log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
+
+ if (e)
+ dbus_error_free(e);
+ }
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
+ if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, e, NULL)) < 0 && r != -EBADR)
goto fail;
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, NULL)) < 0 && r != -EBADR)
- log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, strerror(-r));
+ if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, e, NULL)) < 0 && r != -EBADR) {
+ log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r));
+
+ if (e)
+ dbus_error_free(e);
+ }
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTS], i)
- if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
+ if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, e, NULL)) < 0 && r != -EBADR)
+ goto fail;
+
+ SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTED_BY], i)
+ if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, false, e, NULL)) < 0 && r != -EBADR)
goto fail;
} else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) {
SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i)
- if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, NULL)) < 0 && r != -EBADR)
+ if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, e, NULL)) < 0 && r != -EBADR)
goto fail;
}
continue;
/* No need to stop inactive jobs */
- if (unit_active_state(u) == UNIT_INACTIVE)
+ if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)))
continue;
/* Is there already something listed for this? */
if (hashmap_get(m->transaction_jobs, u))
continue;
- if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, NULL)) < 0)
+ if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, NULL, NULL)) < 0)
log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->meta.id, strerror(-r));
}
return 0;
}
-int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, Job **_ret) {
+int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) {
int r;
Job *ret;
assert(unit);
assert(mode < _JOB_MODE_MAX);
- if (mode == JOB_ISOLATE && type != JOB_START)
+ 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->meta.allow_isolate) {
+ dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated.");
+ return -EPERM;
+ }
- log_debug("Trying to enqueue job %s/%s", unit->meta.id, job_type_to_string(type));
+ log_debug("Trying to enqueue job %s/%s/%s", unit->meta.id, job_type_to_string(type), job_mode_to_string(mode));
- if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, &ret)) < 0) {
+ if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false, e, &ret)) < 0) {
transaction_abort(m);
return r;
}
return r;
}
- if ((r = transaction_activate(m, mode)) < 0)
+ if ((r = transaction_activate(m, mode, e)) < 0)
return r;
log_debug("Enqueued job %s/%s as %u", unit->meta.id, job_type_to_string(type), (unsigned) ret->id);
return 0;
}
-int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, Job **_ret) {
+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(name);
assert(mode < _JOB_MODE_MAX);
- if ((r = manager_load_unit(m, name, NULL, &unit)) < 0)
+ if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0)
return r;
- return manager_add_job(m, type, unit, mode, override, _ret);
+ return manager_add_job(m, type, unit, mode, override, e, _ret);
}
Job *manager_get_job(Manager *m, uint32_t id) {
while ((meta = m->load_queue)) {
assert(meta->in_load_queue);
- unit_load(UNIT(meta));
+ unit_load((Unit*) meta);
n++;
}
return n;
}
-int manager_load_unit_prepare(Manager *m, const char *name, const char *path, Unit **_ret) {
+int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) {
Unit *ret;
int r;
/* This will prepare the unit for loading, but not actually
* load anything from disk. */
- if (path && !is_path(path))
+ if (path && !is_path(path)) {
+ dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path);
return -EINVAL;
+ }
if (!name)
name = file_name_from_path(path);
- if (!unit_name_is_valid(name))
+ if (!unit_name_is_valid(name, false)) {
+ dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name);
return -EINVAL;
+ }
if ((ret = manager_get_unit(m, name))) {
*_ret = ret;
return 0;
}
-int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret) {
+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. */
- if ((r = manager_load_unit_prepare(m, name, path, _ret)) != 0)
+ if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0)
return r;
manager_dispatch_load_queue(m);
while ((meta = m->dbus_unit_queue)) {
assert(meta->in_dbus_queue);
- bus_unit_send_change_signal(UNIT(meta));
+ bus_unit_send_change_signal((Unit*) meta);
n++;
}
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);
+
+ if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 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);
+
+ if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid))))
+ if (!(u = cgroup_unit_by_pid(m, ucred->pid))) {
+ 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;
+ if (!(tags = strv_split(buf, "\n\r")))
+ return -ENOMEM;
+
+ log_debug("Got notification message for unit %s", u->meta.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);
char *name = NULL;
get_process_name(si.si_pid, &name);
- log_debug("Got SIGCHLD for process %llu (%s)", (unsigned long long) si.si_pid, strna(name));
+ log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name));
free(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. */
+ if ((r = manager_process_notify_fd(m)) < 0)
+ return r;
+
+ /* And now figure out the unit this belongs to */
+ if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid))))
+ 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)
if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED)
continue;
- log_debug("Child %llu died (code=%s, status=%i/%s)",
- (long long unsigned) si.si_pid,
+ 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) : strsignal(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 = hashmap_remove(m->watch_pids, UINT32_TO_PTR(si.si_pid))))
+ if (!u)
continue;
- log_debug("Child %llu belongs to %s", (long long unsigned) si.si_pid, u->meta.id);
+ log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->meta.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 void manager_start_target(Manager *m, const char *name) {
+static int manager_start_target(Manager *m, const char *name, JobMode mode) {
int r;
+ DBusError error;
+
+ dbus_error_init(&error);
+
+ log_info("Activating special unit %s", name);
+
+ if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0)
+ log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r));
+
+ dbus_error_free(&error);
- if ((r = manager_add_job_by_name(m, JOB_START, name, JOB_REPLACE, true, NULL)) < 0)
- log_error("Failed to enqueue %s job: %s", name, strerror(-r));
+ return r;
}
static int manager_process_signal_fd(Manager *m) {
if (n >= 0)
return -EIO;
- if (errno == EAGAIN)
+ if (errno == EINTR || errno == EAGAIN)
break;
return -errno;
}
+ log_debug("Received SIG%s", strna(signal_to_string(sfsi.ssi_signo)));
+
switch (sfsi.ssi_signo) {
case SIGCHLD:
break;
case SIGTERM:
- if (m->running_as == MANAGER_INIT)
+ if (m->running_as == MANAGER_SYSTEM) {
/* This is for compatibility with the
* original sysvinit */
m->exit_code = MANAGER_REEXECUTE;
- else
- m->exit_code = MANAGER_EXIT;
+ break;
+ }
- return 0;
+ /* Fall through */
case SIGINT:
- if (m->running_as == MANAGER_INIT) {
- manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET);
+ if (m->running_as == MANAGER_SYSTEM) {
+ manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
break;
}
- m->exit_code = MANAGER_EXIT;
- return 0;
+ /* 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 == MANAGER_INIT)
- manager_start_target(m, SPECIAL_KBREQUEST_TARGET);
+ if (m->running_as == MANAGER_SYSTEM)
+ manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE);
/* This is a nop on non-init */
break;
case SIGPWR:
- if (m->running_as == MANAGER_INIT)
- manager_start_target(m, SPECIAL_SIGPWR_TARGET);
+ if (m->running_as == MANAGER_SYSTEM)
+ manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE);
/* This is a nop on non-init */
break;
if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) {
log_info("Trying to reconnect to bus...");
- bus_init_system(m);
- bus_init_api(m);
+ bus_init(m);
}
if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) {
log_info("Loading D-Bus service...");
- manager_start_target(m, SPECIAL_DBUS_SERVICE);
+ manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE);
}
break;
}
- case SIGUSR2:
- manager_dump_units(m, stdout, "\t");
- manager_dump_jobs(m, stdout, "\t");
+ 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:
- log_info("Got unhandled signal <%s>.", strsignal(sfsi.ssi_signo));
+ 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)) {
+ manager_start_target(m, target_table[sfsi.ssi_signo - SIGRTMIN],
+ (sfsi.ssi_signo == 1 || sfsi.ssi_signo == 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;
+ }
+
+ log_warning("Got unhandled signal <%s>.", strna(signal_to_string(sfsi.ssi_signo)));
+ }
}
}
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_TIMER: {
+ case WATCH_UNIT_TIMER:
+ case WATCH_JOB_TIMER: {
uint64_t v;
ssize_t k;
return k < 0 ? -errno : -EIO;
}
- UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w);
+ 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;
}
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 */
if ((r = manager_dispatch_sigchld(m)) < 0)
if (manager_dispatch_dbus_queue(m) > 0)
continue;
+ if (swap_dispatch_reload(m) > 0)
+ continue;
+
if ((n = epoll_wait(m->epoll_fd, &event, 1, -1)) < 0) {
if (errno == EINTR)
return 0;
}
-static bool manager_utmp_good(Manager *m) {
- int r;
+void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) {
- assert(m);
+#ifdef HAVE_AUDIT
+ char *p;
- if ((r = mount_path_is_mounted(m, _PATH_UTMPX)) <= 0) {
+ if (m->audit_fd < 0)
+ return;
- if (r < 0)
- log_warning("Failed to determine whether " _PATH_UTMPX " is mounted: %s", strerror(-r));
+ /* Don't generate audit events if the service was already
+ * started and we're just deserializing */
+ if (m->n_deserializing > 0)
+ return;
- return false;
+ if (!(p = unit_name_to_prefix_and_instance(u->meta.id))) {
+ log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM));
+ return;
}
- return true;
-}
+ if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0)
+ log_error("Failed to send audit message: %m");
-void manager_write_utmp_reboot(Manager *m) {
- int r;
+ free(p);
+#endif
- assert(m);
+}
- if (m->utmp_reboot_written)
- return;
+void manager_send_unit_plymouth(Manager *m, Unit *u) {
+ int fd = -1;
+ union sockaddr_union sa;
+ int n = 0;
+ char *message = NULL;
+ ssize_t r;
- if (m->running_as != MANAGER_INIT)
+ /* Don't generate plymouth events if the service was already
+ * started and we're just deserializing */
+ if (m->n_deserializing > 0)
return;
- if (!manager_utmp_good(m))
+ if (m->running_as != MANAGER_SYSTEM)
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));
+ if (u->meta.type != UNIT_SERVICE &&
+ u->meta.type != UNIT_MOUNT &&
+ u->meta.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;
}
- m->utmp_reboot_written = true;
-}
-
-void manager_write_utmp_runlevel(Manager *m, Unit *u) {
- int runlevel, r;
+ zero(sa);
+ sa.sa.sa_family = AF_UNIX;
+ strncpy(sa.un.sun_path+1, "/ply-boot-protocol", sizeof(sa.un.sun_path)-1);
+ if (connect(fd, &sa.sa, sizeof(sa.un)) < 0) {
+
+ if (errno != EPIPE &&
+ errno != EAGAIN &&
+ errno != ENOENT &&
+ errno != ECONNREFUSED &&
+ errno != ECONNRESET &&
+ errno != ECONNABORTED)
+ log_error("connect() failed: %m");
- assert(m);
- assert(u);
+ goto finish;
+ }
- if (u->meta.type != UNIT_TARGET)
- return;
+ if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->meta.id) + 1), u->meta.id, &n) < 0) {
+ log_error("Out of memory");
+ goto finish;
+ }
- if (m->running_as != MANAGER_INIT)
- return;
+ errno = 0;
+ if ((r = write(fd, message, n + 1)) != n + 1) {
- if (!manager_utmp_good(m))
- return;
+ if (errno != EPIPE &&
+ errno != EAGAIN &&
+ errno != ENOENT &&
+ errno != ECONNREFUSED &&
+ errno != ECONNRESET &&
+ errno != ECONNABORTED)
+ log_error("Failed to write Plymouth message: %m");
- if ((runlevel = target_get_runlevel(TARGET(u))) <= 0)
- return;
+ goto finish;
+ }
- if ((r = utmp_put_runlevel(0, runlevel, 0)) < 0) {
+finish:
+ if (fd >= 0)
+ close_nointr_nofail(fd);
- if (r != -ENOENT && r != -EROFS)
- log_warning("Failed to write utmp/wtmp: %s", strerror(-r));
- }
+ free(message);
}
void manager_dispatch_bus_name_owner_changed(
UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid);
}
-int manager_open_serialization(FILE **_f) {
+int manager_open_serialization(Manager *m, FILE **_f) {
char *path;
mode_t saved_umask;
int fd;
assert(_f);
- if (asprintf(&path, "/dev/shm/systemd-%u.dump-XXXXXX", (unsigned) getpid()) < 0)
- return -ENOMEM;
+ if (m->running_as == MANAGER_SYSTEM) {
+ mkdir_p("/dev/.systemd", 0755);
+
+ if (asprintf(&path, "/dev/.systemd/dump-%lu-XXXXXX", (unsigned long) getpid()) < 0)
+ return -ENOMEM;
+ } else {
+ if (asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()) < 0)
+ return -ENOMEM;
+ }
saved_umask = umask(0077);
fd = mkostemp(path, O_RDWR|O_CLOEXEC);
assert(f);
assert(fds);
+ fprintf(f, "startup-timestamp=%llu %llu\n\n",
+ (unsigned long long) m->startup_timestamp.realtime,
+ (unsigned long long) m->startup_timestamp.monotonic);
+
+ if (dual_timestamp_is_set(&m->finish_timestamp))
+ fprintf(f, "finish-timestamp=%llu %llu\n\n",
+ (unsigned long long) m->finish_timestamp.realtime,
+ (unsigned long long) m->finish_timestamp.monotonic);
+
HASHMAP_FOREACH_KEY(u, t, m->units, i) {
if (u->meta.id != t)
continue;
log_debug("Deserializing state...");
+ m->n_deserializing ++;
+
+ for (;;) {
+ char line[1024], *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, "startup-timestamp=")) {
+ unsigned long long a, b;
+
+ if (sscanf(l+18, "%lli %llu", &a, &b) != 2)
+ log_debug("Failed to parse startup timestamp value %s", l+18);
+ else {
+ m->startup_timestamp.realtime = a;
+ m->startup_timestamp.monotonic = b;
+ }
+ } else if (startswith(l, "finish-timestamp=")) {
+ unsigned long long a, b;
+
+ if (sscanf(l+18, "%lli %llu", &a, &b) != 2)
+ log_debug("Failed to parse finish timestamp value %s", l+18);
+ else {
+ m->finish_timestamp.realtime = a;
+ m->finish_timestamp.monotonic = b;
+ }
+ } 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))
- break;
+ r = 0;
+ else
+ r = -errno;
- return -errno;
+ goto finish;
}
char_array_0(name);
- if ((r = manager_load_unit(m, strstrip(name), NULL, &u)) < 0)
- return r;
+ if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0)
+ goto finish;
if ((r = unit_deserialize(u, f, fds)) < 0)
- return r;
+ goto finish;
}
- if (ferror(f))
- return -EIO;
+finish:
+ if (ferror(f)) {
+ r = -EIO;
+ goto finish;
+ }
- return 0;
+ assert(m->n_deserializing > 0);
+ m->n_deserializing --;
+
+ return r;
}
int manager_reload(Manager *m) {
assert(m);
- if ((r = manager_open_serialization(&f)) < 0)
+ if ((r = manager_open_serialization(m, &f)) < 0)
return r;
if (!(fds = fdset_new())) {
/* From here on there is no way back. */
manager_clear_jobs_and_units(m);
+ /* Find new unit paths */
+ lookup_paths_free(&m->lookup_paths);
+ if ((q = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0)
+ r = q;
+
+ m->n_deserializing ++;
+
/* First, enumerate what we can from all config files */
if ((q = manager_enumerate(m)) < 0)
r = q;
if ((q = manager_coldplug(m)) < 0)
r = q;
+ assert(m->n_deserializing > 0);
+ m->n_deserializing ++;
+
finish:
if (f)
fclose(f);
return r;
}
+bool manager_is_booting_or_shutting_down(Manager *m) {
+ Unit *u;
+
+ assert(m);
+
+ /* Is the initial job still around? */
+ if (manager_get_job(m, 1))
+ return true;
+
+ /* Is there a job for the shutdown target? */
+ if (((u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET))))
+ return !!u->meta.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);
+}
+
+int manager_set_console(Manager *m, const char *console) {
+ char *c;
+
+ assert(m);
+
+ if (!(c = strdup(console)))
+ return -ENOMEM;
+
+ free(m->console);
+ m->console = c;
+
+ log_debug("Using kernel console %s", c);
+
+ return 0;
+}
+
+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 */
+ if (!(u = manager_get_unit(m, name)))
+ return true;
+
+ return unit_pending_inactive(u);
+}
+
+void manager_check_finished(Manager *m) {
+ char userspace[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX];
+
+ assert(m);
+
+ if (dual_timestamp_is_set(&m->finish_timestamp))
+ return;
+
+ if (hashmap_size(m->jobs) > 0)
+ return;
+
+ dual_timestamp_get(&m->finish_timestamp);
+
+ if (m->running_as == MANAGER_SYSTEM)
+ log_info("Startup finished in %s (kernel) + %s (userspace) = %s.",
+ format_timespan(kernel, sizeof(kernel),
+ m->startup_timestamp.monotonic),
+ format_timespan(userspace, sizeof(userspace),
+ m->finish_timestamp.monotonic - m->startup_timestamp.monotonic),
+ format_timespan(sum, sizeof(sum),
+ m->finish_timestamp.monotonic));
+ else
+ log_debug("Startup finished in %s.",
+ format_timespan(userspace, sizeof(userspace),
+ m->finish_timestamp.monotonic - m->startup_timestamp.monotonic));
+
+}
+
static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
- [MANAGER_INIT] = "init",
[MANAGER_SYSTEM] = "system",
[MANAGER_SESSION] = "session"
};
~ianmdlvl / elogind.git / blobdiff