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-rw-r--r--src/cgroup.c31
-rw-r--r--src/cgroup.h2
-rw-r--r--src/dbus-service.c4
-rw-r--r--src/initctl.c7
-rw-r--r--src/logger.c7
-rw-r--r--src/manager.c161
-rw-r--r--src/manager.h3
-rw-r--r--src/mount.c8
-rw-r--r--src/sd-daemon.c113
-rw-r--r--src/sd-daemon.h59
-rw-r--r--src/service.c81
-rw-r--r--src/service.h3
-rw-r--r--src/socket.c8
-rw-r--r--src/test-daemon.c37
-rw-r--r--src/unit.h3
15 files changed, 508 insertions, 19 deletions
diff --git a/src/cgroup.c b/src/cgroup.c
index 330014dc9f..108c4fcf5e 100644
--- a/src/cgroup.c
+++ b/src/cgroup.c
@@ -535,6 +535,37 @@ int cgroup_notify_empty(Manager *m, const char *group) {
return 0;
}
+Unit* cgroup_unit_by_pid(Manager *m, pid_t pid) {
+ CGroupBonding *l, *b;
+ char *group = NULL;
+ int r;
+
+ assert(m);
+
+ if (pid <= 1)
+ return NULL;
+
+ if ((r = cgroup_get_current_controller_path(pid, m->cgroup_controller, &group)))
+ return NULL;
+
+ l = hashmap_get(m->cgroup_bondings, group);
+ free(group);
+
+ if (!l)
+ return NULL;
+
+ LIST_FOREACH(by_path, b, l) {
+
+ if (!b->unit)
+ continue;
+
+ if (b->only_us)
+ return b->unit;
+ }
+
+ return NULL;
+}
+
CGroupBonding *cgroup_bonding_find_list(CGroupBonding *first, const char *controller) {
CGroupBonding *b;
diff --git a/src/cgroup.h b/src/cgroup.h
index 26fac0a660..67c7cc3501 100644
--- a/src/cgroup.h
+++ b/src/cgroup.h
@@ -76,4 +76,6 @@ int manager_shutdown_cgroup(Manager *m, bool delete);
int cgroup_notify_empty(Manager *m, const char *group);
+Unit* cgroup_unit_by_pid(Manager *m, pid_t pid);
+
#endif
diff --git a/src/dbus-service.c b/src/dbus-service.c
index 6286172a1b..f70a77212c 100644
--- a/src/dbus-service.c
+++ b/src/dbus-service.c
@@ -41,7 +41,8 @@
" <property name=\"ControlPID\" type=\"u\" access=\"read\"/>\n" \
" <property name=\"SysVPath\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"BusName\" type=\"s\" access=\"read\"/>\n" \
- " </interface>\n"
+ " <property name=\"StatusText\" type=\"s\" access=\"read\"/>\n" \
+ " </interface>\n"
#define INTROSPECTION \
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
@@ -76,6 +77,7 @@ DBusHandlerResult bus_service_message_handler(Unit *u, DBusMessage *message) {
{ "org.freedesktop.systemd1.Service", "ControlPID", bus_property_append_pid, "u", &u->service.control_pid },
{ "org.freedesktop.systemd1.Service", "SysVPath", bus_property_append_string, "s", u->service.sysv_path },
{ "org.freedesktop.systemd1.Service", "BusName", bus_property_append_string, "s", u->service.bus_name },
+ { "org.freedesktop.systemd1.Service", "StatusText", bus_property_append_string, "s", u->service.status_text },
{ NULL, NULL, NULL, NULL, NULL }
};
diff --git a/src/initctl.c b/src/initctl.c
index 34c38839df..56ed5cdf30 100644
--- a/src/initctl.c
+++ b/src/initctl.c
@@ -354,6 +354,10 @@ int main(int argc, char *argv[]) {
if (server_init(&server, (unsigned) n) < 0)
return 2;
+ sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing requests...");
+
for (;;) {
struct epoll_event event;
int k;
@@ -378,6 +382,9 @@ int main(int argc, char *argv[]) {
r = 0;
fail:
+ sd_notify(false,
+ "STATUS=Shutting down...");
+
server_done(&server);
log_info("systemd-initctl stopped as pid %llu", (unsigned long long) getpid());
diff --git a/src/logger.c b/src/logger.c
index 5c7e4ee42b..48eee6cd12 100644
--- a/src/logger.c
+++ b/src/logger.c
@@ -547,6 +547,10 @@ int main(int argc, char *argv[]) {
if (server_init(&server, (unsigned) n) < 0)
return 3;
+ sd_notify(false,
+ "READY=1\n"
+ "STATUS=Processing requests...");
+
for (;;) {
struct epoll_event event;
int k;
@@ -571,6 +575,9 @@ int main(int argc, char *argv[]) {
r = 0;
fail:
+ sd_notify(false,
+ "STATUS=Shutting down...");
+
server_done(&server);
log_info("systemd-logger stopped as pid %llu", (unsigned long long) getpid());
diff --git a/src/manager.c b/src/manager.c
index 4dcdf2e507..97d05b52c3 100644
--- a/src/manager.c
+++ b/src/manager.c
@@ -60,6 +60,67 @@
/* 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;
+ char *ne[2], **t;
+ 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 (m->running_as == MANAGER_SESSION)
+ 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, sizeof(sa)) < 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 (asprintf(&ne[0], "NOTIFY_SOCKET=@%s", sa.un.sun_path+1) < 0)
+ return -ENOMEM;
+
+ ne[1] = NULL;
+ t = strv_env_merge(m->environment, ne, NULL);
+ free(ne[0]);
+
+ if (!t)
+ return -ENOMEM;
+
+ strv_free(m->environment);
+ m->environment = t;
+
+ return 0;
+}
+
static int enable_special_signals(Manager *m) {
char fd;
@@ -177,6 +238,9 @@ int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **_m) {
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)
@@ -364,6 +428,8 @@ void manager_free(Manager *m) {
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);
lookup_paths_free(&m->lookup_paths);
strv_free(m->environment);
@@ -1521,12 +1587,82 @@ unsigned manager_dispatch_dbus_queue(Manager *m) {
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)
+ 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, UINT32_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;
+ }
+
+ char_array_0(buf);
+ 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, 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);
@@ -1555,6 +1691,17 @@ static int manager_dispatch_sigchld(Manager *m) {
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, UINT32_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)
@@ -1572,11 +1719,12 @@ static int manager_dispatch_sigchld(Manager *m) {
si.si_status,
strna(si.si_code == CLD_EXITED ? exit_status_to_string(si.si_status) : strsignal(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);
+ hashmap_remove(m->watch_pids, UINT32_TO_PTR(si.si_pid));
UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status);
}
@@ -1738,6 +1886,17 @@ static int process_event(Manager *m, struct epoll_event *ev) {
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 */
diff --git a/src/manager.h b/src/manager.h
index d78bcf5d76..070a27f70b 100644
--- a/src/manager.h
+++ b/src/manager.h
@@ -56,6 +56,7 @@ typedef enum ManagerRunningAs {
enum WatchType {
WATCH_INVALID,
WATCH_SIGNAL,
+ WATCH_NOTIFY,
WATCH_FD,
WATCH_TIMER,
WATCH_MOUNT,
@@ -171,6 +172,7 @@ struct Manager {
Hashmap *watch_pids; /* pid => Unit object n:1 */
+ Watch notify_watch;
Watch signal_watch;
int epoll_fd;
@@ -215,7 +217,6 @@ struct Manager {
char *cgroup_hierarchy;
usec_t gc_queue_timestamp;
-
int gc_marker;
unsigned n_in_gc_queue;
diff --git a/src/mount.c b/src/mount.c
index 5577f16dfd..a8f3d7b9aa 100644
--- a/src/mount.c
+++ b/src/mount.c
@@ -921,12 +921,14 @@ static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
assert(m);
assert(pid >= 0);
- success = is_clean_exit(code, status);
- m->failure = m->failure || !success;
+ if (pid != m->control_pid)
+ return;
- assert(m->control_pid == pid);
m->control_pid = 0;
+ success = is_clean_exit(code, status);
+ m->failure = m->failure || !success;
+
if (m->control_command) {
exec_status_fill(&m->control_command->exec_status, pid, code, status);
m->control_command = NULL;
diff --git a/src/sd-daemon.c b/src/sd-daemon.c
index 29bd204680..0dad73f94d 100644
--- a/src/sd-daemon.c
+++ b/src/sd-daemon.c
@@ -24,6 +24,10 @@
SOFTWARE.
***/
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
@@ -34,12 +38,14 @@
#include <errno.h>
#include <unistd.h>
#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
#include "sd-daemon.h"
int sd_listen_fds(int unset_environment) {
-#ifdef DISABLE_SYSTEMD
+#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
return 0;
#else
int r, fd;
@@ -317,3 +323,108 @@ int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t
return 1;
}
+
+int sd_notify(int unset_environment, const char *state) {
+#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
+ return 0;
+#else
+ int fd = -1, r;
+ struct msghdr msghdr;
+ struct iovec iovec;
+ union sockaddr_union sockaddr;
+ struct ucred *ucred;
+ union {
+ struct cmsghdr cmsghdr;
+ uint8_t buf[CMSG_SPACE(sizeof(struct ucred))];
+ } control;
+ const char *e;
+
+ if (!state) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ if (!(e = getenv("NOTIFY_SOCKET"))) {
+ r = 0;
+ goto finish;
+ }
+
+ /* Must be an abstract socket, or an absolute path */
+ if ((e[0] != '@' && e[0] != '/') || e[1] == 0) {
+ r = -EINVAL;
+ goto finish;
+ }
+
+ if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ memset(&sockaddr, 0, sizeof(sockaddr));
+ sockaddr.sa.sa_family = AF_UNIX;
+ strncpy(sockaddr.un.sun_path, e, sizeof(sockaddr.un.sun_path));
+
+ if (sockaddr.un.sun_path[0] == '@')
+ sockaddr.un.sun_path[0] = 0;
+
+ memset(&iovec, 0, sizeof(iovec));
+ iovec.iov_base = (char*) state;
+ iovec.iov_len = strlen(state);
+
+ memset(&control, 0, sizeof(control));
+ control.cmsghdr.cmsg_level = SOL_SOCKET;
+ control.cmsghdr.cmsg_type = SCM_CREDENTIALS;
+ control.cmsghdr.cmsg_len = CMSG_LEN(sizeof(struct ucred));
+
+ ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr);
+ ucred->pid = getpid();
+ ucred->uid = getuid();
+ ucred->gid = getgid();
+
+ memset(&msghdr, 0, sizeof(msghdr));
+ msghdr.msg_name = &sockaddr;
+ msghdr.msg_namelen = sizeof(struct sockaddr_un);
+ msghdr.msg_iov = &iovec;
+ msghdr.msg_iovlen = 1;
+ msghdr.msg_control = &control;
+ msghdr.msg_controllen = control.cmsghdr.cmsg_len;
+
+ if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
+ r = -errno;
+ goto finish;
+ }
+
+ r = 0;
+
+finish:
+ if (unset_environment)
+ unsetenv("NOTIFY_SOCKET");
+
+ if (fd >= 0)
+ close(fd);
+
+ return r;
+#endif
+}
+
+int sd_notifyf(int unset_environment, const char *format, ...) {
+#if defined(DISABLE_SYSTEMD) || !defined(__linux__)
+ return 0;
+#else
+ va_list ap;
+ char *p = NULL;
+ int r;
+
+ va_start(ap, format);
+ r = vasprintf(&p, format, ap);
+ va_end(ap);
+
+ if (r < 0 || !p)
+ return -ENOMEM;
+
+ r = sd_notify(unset_environment, p);
+ free(p);
+
+ return r;
+#endif
+}
diff --git a/src/sd-daemon.h b/src/sd-daemon.h
index 0d8de45b72..0277b0fb5c 100644
--- a/src/sd-daemon.h
+++ b/src/sd-daemon.h
@@ -27,8 +27,13 @@
SOFTWARE.
***/
+#include <sys/types.h>
#include <inttypes.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
/* Reference implementation of a few systemd related interfaces for
* writing daemons. These interfaces are trivial to implement. To
* simplify porting we provide this reference
@@ -111,4 +116,58 @@ int sd_is_socket_inet(int fd, int family, int type, int listening, uint16_t port
* errno style error code on failure. */
int sd_is_socket_unix(int fd, int type, int listening, const char *path, size_t length);
+/* Informs systemd about changed daemon state. This takes a numeber of
+ * newline seperated environment-style variable assignments in a
+ * string. The following strings are known:
+ *
+ * READY=1 Tells systemd that daemon startup is finished (only
+ * relevant for services of Type=notify). The passed
+ * argument is a boolean "1" or "0". Since there is
+ * little value in signalling non-readiness the only
+ * value daemons should send is "READY=1".
+ *
+ * STATUS=... Passes a status string back to systemd that
+ * describes the daemon state. This is free-from and
+ * can be used for various purposes: general state
+ * feedback, fsck-like programs could pass completion
+ * percentages and failing programs could pass a human
+ * readable error message. Example: "STATUS=Completed
+ * 66% of file system check..."
+ *
+ * ERRNO=... If a daemon fails, the errno-style error code,
+ * formatted as string. Example: "ERRNO=2" for ENOENT.
+ *
+ * BUSERROR=... If a daemon fails, the D-Bus error-style error
+ * code. Example: "BUSERROR=org.freedesktop.DBus.Error.TimedOut"
+ *
+ * MAINPID=... The main pid of a daemon, in case systemd did not
+ * fork off the process itself. Example: "MAINPID=4711"
+ *
+ * See sd_notifyf() for more complete examples.
+ */
+int sd_notify(int unset_environment, const char *state);
+
+/* Similar to sd_send_state() but takes a format string.
+ *
+ * Example 1: A daemon could send the following after initialization:
+ *
+ * sd_notifyf(0, "READY=1\n"
+ * "STATUS=Processing requests...\n"
+ * "MAINPID=%lu",
+ * (unsigned long) getpid());
+ *
+ * Example 2: A daemon could send the following shortly before
+ * exiting, on failure:
+ *
+ * sd_notifyf(0, "STATUS=Failed to start up: %s\n"
+ * "ERRNO=%i",
+ * strerror(errno),
+ * errno);
+ */
+int sd_notifyf(int unset_environment, const char *format, ...);
+
+#ifdef __cplusplus
+}
+#endif
+
#endif
diff --git a/src/service.c b/src/service.c
index 547a55567a..6e35a4da58 100644
--- a/src/service.c
+++ b/src/service.c
@@ -149,6 +149,9 @@ static void service_done(Unit *u) {
free(s->sysv_runlevels);
s->sysv_runlevels = NULL;
+ free(s->status_text);
+ s->status_text = NULL;
+
exec_context_done(&s->exec_context);
exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
s->control_command = NULL;
@@ -907,6 +910,10 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
fprintf(f, "%sSysVRunLevels: %s\n",
prefix, s->sysv_runlevels);
+ if (s->status_text)
+ fprintf(f, "%sStatus Text: %s\n",
+ prefix, s->status_text);
+
free(p2);
}
@@ -1120,7 +1127,9 @@ static int service_coldplug(Unit *u) {
if ((s->deserialized_state == SERVICE_START &&
(s->type == SERVICE_FORKING ||
- s->type == SERVICE_DBUS)) ||
+ s->type == SERVICE_DBUS ||
+ s->type == SERVICE_FINISH ||
+ s->type == SERVICE_NOTIFY)) ||
s->deserialized_state == SERVICE_START_POST ||
s->deserialized_state == SERVICE_RUNNING ||
s->deserialized_state == SERVICE_RELOAD ||
@@ -1541,7 +1550,7 @@ static void service_enter_start(Service *s) {
if ((r = service_spawn(s,
s->exec_command[SERVICE_EXEC_START],
- s->type == SERVICE_FORKING || s->type == SERVICE_DBUS,
+ s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
true,
true,
true,
@@ -1569,13 +1578,15 @@ static void service_enter_start(Service *s) {
service_set_state(s, SERVICE_START);
} else if (s->type == SERVICE_FINISH ||
- s->type == SERVICE_DBUS) {
+ s->type == SERVICE_DBUS ||
+ s->type == SERVICE_NOTIFY) {
/* For finishing services we wait until the start
* process exited, too, but it is our main process. */
/* For D-Bus services we know the main pid right away,
- * but wait for the bus name to appear on the bus. */
+ * but wait for the bus name to appear on the
+ * bus. Notify services are similar. */
s->main_pid = pid;
s->main_pid_known = true;
@@ -1946,7 +1957,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
exec_status_fill(&s->main_exec_status, pid, code, status);
s->main_pid = 0;
- if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
+ if (s->type != SERVICE_FORKING) {
assert(s->exec_command[SERVICE_EXEC_START]);
s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
}
@@ -1974,7 +1985,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
break;
} else {
- assert(s->type == SERVICE_DBUS);
+ assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
/* Fall through */
}
@@ -2101,8 +2112,7 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
assert_not_reached("Uh, control process died at wrong time.");
}
}
- } else
- assert_not_reached("Got SIGCHLD for unkown PID");
+ }
}
static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
@@ -2195,6 +2205,57 @@ static void service_cgroup_notify_event(Unit *u) {
}
}
+static void service_notify_message(Unit *u, char **tags) {
+ Service *s = SERVICE(u);
+ const char *e;
+
+ assert(u);
+
+ log_debug("%s: Got message", u->meta.id);
+
+ /* Interpret MAINPID= */
+ if ((e = strv_find_prefix(tags, "MAINPID=")) &&
+ (s->state == SERVICE_START ||
+ s->state == SERVICE_START_POST ||
+ s->state == SERVICE_RUNNING ||
+ s->state == SERVICE_RELOAD)) {
+ unsigned long pid;
+
+ if (safe_atolu(e + 8, &pid) < 0 ||
+ (unsigned long) (pid_t) pid != pid ||
+ pid <= 1)
+ log_warning("Failed to parse %s", e);
+ else {
+ log_debug("%s: got %s", u->meta.id, e);
+ s->main_pid = (pid_t) pid;
+ }
+ }
+
+ /* Interpret READY= */
+ if (s->type == SERVICE_NOTIFY &&
+ s->state == SERVICE_START &&
+ strv_find(tags, "READY=1")) {
+ log_debug("%s: got READY=1", u->meta.id);
+
+ service_enter_start_post(s);
+ }
+
+ /* Interpret STATUS= */
+ if ((e = strv_find_prefix(tags, "STATUS="))) {
+ char *t;
+
+ if (!(t = strdup(e+7))) {
+ log_error("Failed to allocate string.");
+ return;
+ }
+
+ log_debug("%s: got %s", u->meta.id, e);
+
+ free(s->status_text);
+ s->status_text = t;
+ }
+}
+
static int service_enumerate(Manager *m) {
char **p;
unsigned i;
@@ -2456,7 +2517,8 @@ static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
[SERVICE_FORKING] = "forking",
[SERVICE_SIMPLE] = "simple",
[SERVICE_FINISH] = "finish",
- [SERVICE_DBUS] = "dbus"
+ [SERVICE_DBUS] = "dbus",
+ [SERVICE_NOTIFY] = "notify"
};
DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
@@ -2502,6 +2564,7 @@ const UnitVTable service_vtable = {
.timer_event = service_timer_event,
.cgroup_notify_empty = service_cgroup_notify_event,
+ .notify_message = service_notify_message,
.bus_name_owner_change = service_bus_name_owner_change,
.bus_query_pid_done = service_bus_query_pid_done,
diff --git a/src/service.h b/src/service.h
index 5242de58fa..d644e7207a 100644
--- a/src/service.h
+++ b/src/service.h
@@ -60,6 +60,7 @@ typedef enum ServiceType {
SERVICE_FORKING, /* forks by itself (i.e. traditional daemons) */
SERVICE_FINISH, /* we fork and wait until the program finishes (i.e. programs like fsck which run and need to finish before we continue) */
SERVICE_DBUS, /* we fork and wait until a specific D-Bus name appears on the bus */
+ SERVICE_NOTIFY, /* we fork and wait until a daemon sends us a ready message with sd_notify() */
_SERVICE_TYPE_MAX,
_SERVICE_TYPE_INVALID = -1
} ServiceType;
@@ -121,6 +122,8 @@ struct Service {
char *bus_name;
+ char *status_text;
+
RateLimit ratelimit;
int socket_fd;
diff --git a/src/socket.c b/src/socket.c
index 19f1d22097..66131f867d 100644
--- a/src/socket.c
+++ b/src/socket.c
@@ -1228,12 +1228,14 @@ static void socket_sigchld_event(Unit *u, pid_t pid, int code, int status) {
assert(s);
assert(pid >= 0);
- success = is_clean_exit(code, status);
- s->failure = s->failure || !success;
+ if (pid != s->control_pid)
+ return;
- assert(s->control_pid == pid);
s->control_pid = 0;
+ success = is_clean_exit(code, status);
+ s->failure = s->failure || !success;
+
if (s->control_command)
exec_status_fill(&s->control_command->exec_status, pid, code, status);
diff --git a/src/test-daemon.c b/src/test-daemon.c
new file mode 100644
index 0000000000..8911b68620
--- /dev/null
+++ b/src/test-daemon.c
@@ -0,0 +1,37 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 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
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <unistd.h>
+
+#include "sd-daemon.h"
+
+int main(int argc, char*argv[]) {
+
+ sd_notify(0, "STATUS=Starting up");
+ sleep(5);
+ sd_notify(0,
+ "STATUS=Running\n"
+ "READY=1");
+ sleep(10);
+ sd_notify(0, "STATUS=Quitting");
+
+ return 0;
+}
diff --git a/src/unit.h b/src/unit.h
index 5e61f7c027..1f8874f4cc 100644
--- a/src/unit.h
+++ b/src/unit.h
@@ -285,6 +285,9 @@ struct UnitVTable {
* ran empty */
void (*cgroup_notify_empty)(Unit *u);
+ /* Called whenever a process of this unit sends us a message */
+ void (*notify_message)(Unit *u, char **tags);
+
/* Called whenever a name thus Unit registered for comes or
* goes away. */
void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-01 05:45:26 +0000