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Diffstat (limited to 'src/core/service.c')
-rw-r--r--src/core/service.c344
1 files changed, 206 insertions, 138 deletions
diff --git a/src/core/service.c b/src/core/service.c
index 292fe50de8..c77d4dc796 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -108,6 +108,7 @@ static void service_init(Unit *u) {
s->type = _SERVICE_TYPE_INVALID;
s->socket_fd = -1;
s->bus_endpoint_fd = -1;
+ s->stdin_fd = s->stdout_fd = s->stderr_fd = -1;
s->guess_main_pid = true;
RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst);
@@ -142,8 +143,7 @@ static void service_unwatch_pid_file(Service *s) {
log_unit_debug(UNIT(s), "Stopping watch for PID file %s", s->pid_file_pathspec->path);
path_spec_unwatch(s->pid_file_pathspec);
path_spec_done(s->pid_file_pathspec);
- free(s->pid_file_pathspec);
- s->pid_file_pathspec = NULL;
+ s->pid_file_pathspec = mfree(s->pid_file_pathspec);
}
static int service_set_main_pid(Service *s, pid_t pid) {
@@ -262,6 +262,7 @@ static void service_fd_store_unlink(ServiceFDStore *fs) {
sd_event_source_unref(fs->event_source);
}
+ free(fs->fdname);
safe_close(fs->fd);
free(fs);
}
@@ -271,11 +272,15 @@ static void service_release_resources(Unit *u) {
assert(s);
- if (!s->fd_store)
+ if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0)
return;
log_unit_debug(u, "Releasing all resources.");
+ s->stdin_fd = safe_close(s->stdin_fd);
+ s->stdout_fd = safe_close(s->stdout_fd);
+ s->stderr_fd = safe_close(s->stderr_fd);
+
while (s->fd_store)
service_fd_store_unlink(s->fd_store);
@@ -287,14 +292,9 @@ static void service_done(Unit *u) {
assert(s);
- free(s->pid_file);
- s->pid_file = NULL;
-
- free(s->status_text);
- s->status_text = NULL;
-
- free(s->reboot_arg);
- s->reboot_arg = NULL;
+ s->pid_file = mfree(s->pid_file);
+ s->status_text = mfree(s->status_text);
+ s->reboot_arg = mfree(s->reboot_arg);
s->exec_runtime = exec_runtime_unref(s->exec_runtime);
exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
@@ -313,8 +313,7 @@ static void service_done(Unit *u) {
if (s->bus_name) {
unit_unwatch_bus_name(u, s->bus_name);
- free(s->bus_name);
- s->bus_name = NULL;
+ s->bus_name = mfree(s->bus_name);
}
s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd);
@@ -341,7 +340,7 @@ static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *us
return 0;
}
-static int service_add_fd_store(Service *s, int fd) {
+static int service_add_fd_store(Service *s, int fd, const char *name) {
ServiceFDStore *fs;
int r;
@@ -368,9 +367,15 @@ static int service_add_fd_store(Service *s, int fd) {
fs->fd = fd;
fs->service = s;
+ fs->fdname = strdup(name ?: "stored");
+ if (!fs->fdname) {
+ free(fs);
+ return -ENOMEM;
+ }
r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs);
if (r < 0) {
+ free(fs->fdname);
free(fs);
return r;
}
@@ -383,7 +388,7 @@ static int service_add_fd_store(Service *s, int fd) {
return 1;
}
-static int service_add_fd_store_set(Service *s, FDSet *fds) {
+static int service_add_fd_store_set(Service *s, FDSet *fds, const char *name) {
int r;
assert(s);
@@ -398,7 +403,7 @@ static int service_add_fd_store_set(Service *s, FDSet *fds) {
if (fd < 0)
break;
- r = service_add_fd_store(s, fd);
+ r = service_add_fd_store(s, fd, name);
if (r < 0)
return log_unit_error_errno(UNIT(s), r, "Couldn't add fd to fd store: %m");
if (r > 0) {
@@ -489,6 +494,12 @@ static int service_verify(Service *s) {
return -EINVAL;
}
+ if (s->usb_function_descriptors && !s->usb_function_strings)
+ log_unit_warning(UNIT(s), "Service has USBFunctionDescriptors= setting, but no USBFunctionStrings=. Ignoring.");
+
+ if (!s->usb_function_descriptors && s->usb_function_strings)
+ log_unit_warning(UNIT(s), "Service has USBFunctionStrings= setting, but no USBFunctionDescriptors=. Ignoring.");
+
return 0;
}
@@ -702,13 +713,12 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
fprintf(f, "%sStatus Text: %s\n",
prefix, s->status_text);
- if (s->n_fd_store_max > 0) {
+ if (s->n_fd_store_max > 0)
fprintf(f,
"%sFile Descriptor Store Max: %u\n"
"%sFile Descriptor Store Current: %u\n",
prefix, s->n_fd_store_max,
prefix, s->n_fd_store);
- }
}
static int service_load_pid_file(Service *s, bool may_warn) {
@@ -886,7 +896,6 @@ static void service_set_state(Service *s, ServiceState state) {
log_unit_debug(UNIT(s), "Changed %s -> %s", service_state_to_string(old_state), service_state_to_string(state));
unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
- s->reload_result = SERVICE_SUCCESS;
}
static int service_coldplug(Unit *u) {
@@ -959,62 +968,79 @@ static int service_coldplug(Unit *u) {
return 0;
}
-static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
+static int service_collect_fds(Service *s, int **fds, char ***fd_names) {
+ _cleanup_strv_free_ char **rfd_names = NULL;
_cleanup_free_ int *rfds = NULL;
- unsigned rn_fds = 0;
- Iterator i;
- int r;
- Unit *u;
+ int rn_fds = 0, r;
assert(s);
assert(fds);
- assert(n_fds);
+ assert(fd_names);
- if (s->socket_fd >= 0)
- return 0;
+ if (s->socket_fd >= 0) {
- SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
- int *cfds;
- unsigned cn_fds;
- Socket *sock;
+ /* Pass the per-connection socket */
- if (u->type != UNIT_SOCKET)
- continue;
+ rfds = new(int, 1);
+ if (!rfds)
+ return -ENOMEM;
+ rfds[0] = s->socket_fd;
- sock = SOCKET(u);
+ rfd_names = strv_new("connection", NULL);
+ if (!rfd_names)
+ return -ENOMEM;
- r = socket_collect_fds(sock, &cfds, &cn_fds);
- if (r < 0)
- return r;
+ rn_fds = 1;
+ } else {
+ Iterator i;
+ Unit *u;
- if (cn_fds <= 0) {
- free(cfds);
- continue;
- }
+ /* Pass all our configured sockets for singleton services */
- if (!rfds) {
- rfds = cfds;
- rn_fds = cn_fds;
- } else {
- int *t;
+ SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
+ _cleanup_free_ int *cfds = NULL;
+ Socket *sock;
+ int cn_fds;
- t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int));
- if (!t) {
- free(cfds);
- return -ENOMEM;
- }
+ if (u->type != UNIT_SOCKET)
+ continue;
+
+ sock = SOCKET(u);
+
+ cn_fds = socket_collect_fds(sock, &cfds);
+ if (cn_fds < 0)
+ return cn_fds;
- memcpy(t + rn_fds, cfds, cn_fds * sizeof(int));
- rfds = t;
- rn_fds += cn_fds;
+ if (cn_fds <= 0)
+ continue;
- free(cfds);
+ if (!rfds) {
+ rfds = cfds;
+ rn_fds = cn_fds;
+
+ cfds = NULL;
+ } else {
+ int *t;
+
+ t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int));
+ if (!t)
+ return -ENOMEM;
+ memcpy(t + rn_fds, cfds, cn_fds * sizeof(int));
+
+ rfds = t;
+ rn_fds += cn_fds;
+ }
+
+ r = strv_extend_n(&rfd_names, socket_fdname(sock), cn_fds);
+ if (r < 0)
+ return r;
}
}
if (s->n_fd_store > 0) {
ServiceFDStore *fs;
+ char **nl;
int *t;
t = realloc(rfds, (rn_fds + s->n_fd_store) * sizeof(int));
@@ -1022,15 +1048,32 @@ static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
return -ENOMEM;
rfds = t;
- LIST_FOREACH(fd_store, fs, s->fd_store)
- rfds[rn_fds++] = fs->fd;
+
+ nl = realloc(rfd_names, (rn_fds + s->n_fd_store + 1) * sizeof(char*));
+ if (!nl)
+ return -ENOMEM;
+
+ rfd_names = nl;
+
+ LIST_FOREACH(fd_store, fs, s->fd_store) {
+ rfds[rn_fds] = fs->fd;
+ rfd_names[rn_fds] = strdup(strempty(fs->fdname));
+ if (!rfd_names[rn_fds])
+ return -ENOMEM;
+
+ rn_fds++;
+ }
+
+ rfd_names[rn_fds] = NULL;
}
*fds = rfds;
- *n_fds = rn_fds;
+ *fd_names = rfd_names;
rfds = NULL;
- return 0;
+ rfd_names = NULL;
+
+ return rn_fds;
}
static int service_spawn(
@@ -1044,23 +1087,25 @@ static int service_spawn(
bool is_control,
pid_t *_pid) {
- pid_t pid;
- int r;
- int *fds = NULL;
- _cleanup_free_ int *fdsbuf = NULL;
- unsigned n_fds = 0, n_env = 0;
+ _cleanup_strv_free_ char **argv = NULL, **final_env = NULL, **our_env = NULL, **fd_names = NULL;
_cleanup_free_ char *bus_endpoint_path = NULL;
- _cleanup_strv_free_ char
- **argv = NULL, **final_env = NULL, **our_env = NULL;
+ _cleanup_free_ int *fds = NULL;
+ unsigned n_fds = 0, n_env = 0;
const char *path;
+ pid_t pid;
+
ExecParameters exec_params = {
- .apply_permissions = apply_permissions,
- .apply_chroot = apply_chroot,
- .apply_tty_stdin = apply_tty_stdin,
- .bus_endpoint_fd = -1,
- .selinux_context_net = s->socket_fd_selinux_context_net
+ .apply_permissions = apply_permissions,
+ .apply_chroot = apply_chroot,
+ .apply_tty_stdin = apply_tty_stdin,
+ .bus_endpoint_fd = -1,
+ .stdin_fd = -1,
+ .stdout_fd = -1,
+ .stderr_fd = -1,
};
+ int r;
+
assert(s);
assert(c);
assert(_pid);
@@ -1080,16 +1125,11 @@ static int service_spawn(
s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
- if (s->socket_fd >= 0) {
- fds = &s->socket_fd;
- n_fds = 1;
- } else {
- r = service_collect_fds(s, &fdsbuf, &n_fds);
- if (r < 0)
- goto fail;
+ r = service_collect_fds(s, &fds, &fd_names);
+ if (r < 0)
+ goto fail;
- fds = fdsbuf;
- }
+ n_fds = r;
}
if (timeout > 0) {
@@ -1127,7 +1167,7 @@ static int service_spawn(
goto fail;
}
- if (UNIT_DEREF(s->accept_socket)) {
+ if (s->socket_fd >= 0) {
union sockaddr_union sa;
socklen_t salen = sizeof(sa);
@@ -1175,7 +1215,7 @@ static int service_spawn(
if (is_control && UNIT(s)->cgroup_path) {
path = strjoina(UNIT(s)->cgroup_path, "/control");
- cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
+ (void) cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
} else
path = UNIT(s)->cgroup_path;
@@ -1193,6 +1233,7 @@ static int service_spawn(
exec_params.argv = argv;
exec_params.fds = fds;
+ exec_params.fd_names = fd_names;
exec_params.n_fds = n_fds;
exec_params.environment = final_env;
exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
@@ -1202,8 +1243,12 @@ static int service_spawn(
exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
exec_params.watchdog_usec = s->watchdog_usec;
exec_params.bus_endpoint_path = bus_endpoint_path;
+ exec_params.selinux_context_net = s->socket_fd_selinux_context_net;
if (s->type == SERVICE_IDLE)
exec_params.idle_pipe = UNIT(s)->manager->idle_pipe;
+ exec_params.stdin_fd = s->stdin_fd;
+ exec_params.stdout_fd = s->stdout_fd;
+ exec_params.stderr_fd = s->stderr_fd;
r = exec_spawn(UNIT(s),
c,
@@ -1780,6 +1825,7 @@ static void service_enter_reload(Service *s) {
assert(s);
service_unwatch_control_pid(s);
+ s->reload_result = SERVICE_SUCCESS;
s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
if (s->control_command) {
@@ -1939,8 +1985,7 @@ static int service_start(Unit *u) {
s->forbid_restart = false;
s->reset_cpu_usage = true;
- free(s->status_text);
- s->status_text = NULL;
+ s->status_text = mfree(s->status_text);
s->status_errno = 0;
s->notify_state = NOTIFY_UNKNOWN;
@@ -2004,6 +2049,7 @@ _pure_ static bool service_can_reload(Unit *u) {
static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
Service *s = SERVICE(u);
ServiceFDStore *fs;
+ int r;
assert(u);
assert(f);
@@ -2022,12 +2068,9 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
unit_serialize_item(u, f, "bus-name-good", yes_no(s->bus_name_good));
- if (s->status_text) {
- _cleanup_free_ char *c = NULL;
-
- c = cescape(s->status_text);
- unit_serialize_item(u, f, "status-text", strempty(c));
- }
+ r = unit_serialize_item_escaped(u, f, "status-text", s->status_text);
+ if (r < 0)
+ return r;
/* FIXME: There's a minor uncleanliness here: if there are
* multiple commands attached here, we will start from the
@@ -2035,34 +2078,34 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
if (s->control_command_id >= 0)
unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
- if (s->socket_fd >= 0) {
- int copy;
-
- copy = fdset_put_dup(fds, s->socket_fd);
- if (copy < 0)
- return copy;
-
- unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
- }
-
- if (s->bus_endpoint_fd >= 0) {
- int copy;
-
- copy = fdset_put_dup(fds, s->bus_endpoint_fd);
- if (copy < 0)
- return copy;
+ r = unit_serialize_item_fd(u, f, fds, "stdin-fd", s->stdin_fd);
+ if (r < 0)
+ return r;
+ r = unit_serialize_item_fd(u, f, fds, "stdout-fd", s->stdout_fd);
+ if (r < 0)
+ return r;
+ r = unit_serialize_item_fd(u, f, fds, "stderr-fd", s->stderr_fd);
+ if (r < 0)
+ return r;
- unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy);
- }
+ r = unit_serialize_item_fd(u, f, fds, "socket-fd", s->socket_fd);
+ if (r < 0)
+ return r;
+ r = unit_serialize_item_fd(u, f, fds, "endpoint-fd", s->bus_endpoint_fd);
+ if (r < 0)
+ return r;
LIST_FOREACH(fd_store, fs, s->fd_store) {
+ _cleanup_free_ char *c = NULL;
int copy;
copy = fdset_put_dup(fds, fs->fd);
if (copy < 0)
return copy;
- unit_serialize_item_format(u, f, "fd-store-fd", "%i", copy);
+ c = cescape(fs->fdname);
+
+ unit_serialize_item_format(u, f, "fd-store-fd", "%i %s", copy, strempty(c));
}
if (s->main_exec_status.pid > 0) {
@@ -2079,8 +2122,7 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
if (dual_timestamp_is_set(&s->watchdog_timestamp))
dual_timestamp_serialize(f, "watchdog-timestamp", &s->watchdog_timestamp);
- if (s->forbid_restart)
- unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
+ unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
return 0;
}
@@ -2192,12 +2234,24 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value,
s->bus_endpoint_fd = fdset_remove(fds, fd);
}
} else if (streq(key, "fd-store-fd")) {
+ const char *fdv;
+ size_t pf;
int fd;
- if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ pf = strcspn(value, WHITESPACE);
+ fdv = strndupa(value, pf);
+
+ if (safe_atoi(fdv, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
log_unit_debug(u, "Failed to parse fd-store-fd value: %s", value);
else {
- r = service_add_fd_store(s, fd);
+ _cleanup_free_ char *t = NULL;
+ const char *fdn;
+
+ fdn = value + pf;
+ fdn += strspn(fdn, WHITESPACE);
+ (void) cunescape(fdn, 0, &t);
+
+ r = service_add_fd_store(s, fd, t);
if (r < 0)
log_unit_error_errno(u, r, "Failed to add fd to store: %m");
else if (r > 0)
@@ -2239,6 +2293,33 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value,
log_unit_debug(u, "Failed to parse forbid-restart value: %s", value);
else
s->forbid_restart = b;
+ } else if (streq(key, "stdin-fd")) {
+ int fd;
+
+ if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_unit_debug(u, "Failed to parse stdin-fd value: %s", value);
+ else {
+ asynchronous_close(s->stdin_fd);
+ s->stdin_fd = fdset_remove(fds, fd);
+ }
+ } else if (streq(key, "stdout-fd")) {
+ int fd;
+
+ if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_unit_debug(u, "Failed to parse stdout-fd value: %s", value);
+ else {
+ asynchronous_close(s->stdout_fd);
+ s->stdout_fd = fdset_remove(fds, fd);
+ }
+ } else if (streq(key, "stderr-fd")) {
+ int fd;
+
+ if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_unit_debug(u, "Failed to parse stderr-fd value: %s", value);
+ else {
+ asynchronous_close(s->stderr_fd);
+ s->stderr_fd = fdset_remove(fds, fd);
+ }
} else
log_unit_debug(u, "Unknown serialization key: %s", key);
@@ -2746,6 +2827,8 @@ static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *us
case SERVICE_RELOAD:
log_unit_warning(UNIT(s), "Reload operation timed out. Stopping.");
+ service_unwatch_control_pid(s);
+ service_kill_control_processes(s);
s->reload_result = SERVICE_FAILURE_TIMEOUT;
service_enter_running(s, SERVICE_SUCCESS);
break;
@@ -2946,13 +3029,19 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds)
}
/* Interpret WATCHDOG= */
- if (strv_find(tags, "WATCHDOG=1")) {
+ if (strv_find(tags, "WATCHDOG=1"))
service_reset_watchdog(s);
- }
- /* Add the passed fds to the fd store */
if (strv_find(tags, "FDSTORE=1")) {
- service_add_fd_store_set(s, fds);
+ const char *name;
+
+ name = strv_find_startswith(tags, "FDNAME=");
+ if (name && !fdname_is_valid(name)) {
+ log_unit_warning(u, "Passed FDNAME= name is invalid, ignoring.");
+ name = NULL;
+ }
+
+ service_add_fd_store_set(s, fds, name);
}
/* Notify clients about changed status or main pid */
@@ -3096,27 +3185,6 @@ static int service_kill(Unit *u, KillWho who, int signo, sd_bus_error *error) {
return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
}
-static const char* const service_state_table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = "dead",
- [SERVICE_START_PRE] = "start-pre",
- [SERVICE_START] = "start",
- [SERVICE_START_POST] = "start-post",
- [SERVICE_RUNNING] = "running",
- [SERVICE_EXITED] = "exited",
- [SERVICE_RELOAD] = "reload",
- [SERVICE_STOP] = "stop",
- [SERVICE_STOP_SIGABRT] = "stop-sigabrt",
- [SERVICE_STOP_SIGTERM] = "stop-sigterm",
- [SERVICE_STOP_SIGKILL] = "stop-sigkill",
- [SERVICE_STOP_POST] = "stop-post",
- [SERVICE_FINAL_SIGTERM] = "final-sigterm",
- [SERVICE_FINAL_SIGKILL] = "final-sigkill",
- [SERVICE_FAILED] = "failed",
- [SERVICE_AUTO_RESTART] = "auto-restart",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
-
static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
[SERVICE_RESTART_NO] = "no",
[SERVICE_RESTART_ON_SUCCESS] = "on-success",
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-08-13 02:26:31 +0000