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-rw-r--r--src/core/service.c183
1 files changed, 112 insertions, 71 deletions
diff --git a/src/core/service.c b/src/core/service.c
index 78232ee71c..26b9b56371 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -326,6 +326,88 @@ static void service_done(Unit *u) {
service_release_resources(u);
}
+static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) {
+ ServiceFDStore *fs = userdata;
+
+ assert(e);
+ assert(fs);
+
+ /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
+ service_fd_store_unlink(fs);
+ return 0;
+}
+
+static int service_add_fd_store(Service *s, int fd) {
+ ServiceFDStore *fs;
+ int r;
+
+ assert(s);
+ assert(fd >= 0);
+
+ if (s->n_fd_store >= s->n_fd_store_max)
+ return 0;
+
+ LIST_FOREACH(fd_store, fs, s->fd_store) {
+ r = same_fd(fs->fd, fd);
+ if (r < 0)
+ return r;
+ if (r > 0) {
+ /* Already included */
+ safe_close(fd);
+ return 1;
+ }
+ }
+
+ fs = new0(ServiceFDStore, 1);
+ if (!fs)
+ return -ENOMEM;
+
+ fs->fd = fd;
+ fs->service = s;
+
+ r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs);
+ if (r < 0) {
+ free(fs);
+ return r;
+ }
+
+ LIST_PREPEND(fd_store, s->fd_store, fs);
+ s->n_fd_store++;
+
+ return 1;
+}
+
+static int service_add_fd_store_set(Service *s, FDSet *fds) {
+ int r;
+
+ assert(s);
+
+ if (fdset_size(fds) <= 0)
+ return 0;
+
+ while (s->n_fd_store < s->n_fd_store_max) {
+ _cleanup_close_ int fd = -1;
+
+ fd = fdset_steal_first(fds);
+ if (fd < 0)
+ break;
+
+ r = service_add_fd_store(s, fd);
+ if (r < 0)
+ return log_unit_error_errno(UNIT(s)->id, r, "%s: Couldn't add fd to fd store: %m", UNIT(s)->id);
+
+ if (r > 0) {
+ log_unit_debug(UNIT(s)->id, "%s: added fd to fd store.", UNIT(s)->id);
+ fd = -1;
+ }
+ }
+
+ if (fdset_size(fds) > 0)
+ log_unit_warning(UNIT(s)->id, "%s: tried to store more fds than FDStoreMax=%u allows, closing remaining.", UNIT(s)->id, s->n_fd_store_max);
+
+ return 0;
+}
+
static int service_arm_timer(Service *s, usec_t usec) {
int r;
@@ -1801,6 +1883,7 @@ _pure_ static bool service_can_reload(Unit *u) {
static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
Service *s = SERVICE(u);
+ ServiceFDStore *fs;
assert(u);
assert(f);
@@ -1832,7 +1915,8 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
if (s->socket_fd >= 0) {
int copy;
- if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
+ copy = fdset_put_dup(fds, s->socket_fd);
+ if (copy < 0)
return copy;
unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
@@ -1841,12 +1925,23 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
if (s->bus_endpoint_fd >= 0) {
int copy;
- if ((copy = fdset_put_dup(fds, s->bus_endpoint_fd)) < 0)
+ copy = fdset_put_dup(fds, s->bus_endpoint_fd);
+ if (copy < 0)
return copy;
unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy);
}
+ LIST_FOREACH(fd_store, fs, s->fd_store) {
+ 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);
+ }
+
if (s->main_exec_status.pid > 0) {
unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
s->main_exec_status.pid);
@@ -1873,6 +1968,7 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
Service *s = SERVICE(u);
+ int r;
assert(u);
assert(key);
@@ -1968,6 +2064,19 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value,
safe_close(s->bus_endpoint_fd);
s->bus_endpoint_fd = fdset_remove(fds, fd);
}
+ } else if (streq(key, "fd-store-fd")) {
+ int fd;
+
+ if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
+ log_unit_debug(u->id, "Failed to parse fd-store-fd value %s", value);
+ else {
+ r = service_add_fd_store(s, fd);
+ if (r < 0)
+ log_unit_error_errno(u->id, r, "Failed to add fd to store: %m");
+ else if (r > 0)
+ fdset_remove(fds, fd);
+ }
+
} else if (streq(key, "main-exec-status-pid")) {
pid_t pid;
@@ -2598,74 +2707,6 @@ static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void
return 0;
}
-static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) {
- ServiceFDStore *fs = userdata;
-
- assert(e);
- assert(fs);
-
- /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
- service_fd_store_unlink(fs);
- return 0;
-}
-
-static int service_add_fd_set(Service *s, FDSet *fds) {
- int r;
-
- assert(s);
-
- if (fdset_size(fds) <= 0)
- return 0;
-
- while (s->n_fd_store < s->n_fd_store_max) {
- _cleanup_close_ int fd = -1;
- ServiceFDStore *fs;
- bool same = false;
-
- fd = fdset_steal_first(fds);
- if (fd < 0)
- break;
-
- LIST_FOREACH(fd_store, fs, s->fd_store) {
- r = same_fd(fs->fd, fd);
- if (r < 0)
- return log_unit_error_errno(UNIT(s)->id, r, "%s: Couldn't check if same fd: %m", UNIT(s)->id);
- if (r > 0) {
- same = true;
- break;
- }
- }
-
- if (same)
- continue;
-
- fs = new0(ServiceFDStore, 1);
- if (!fs)
- return log_oom();
-
- fs->fd = fd;
- fs->service = s;
-
- r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs);
- if (r < 0) {
- free(fs);
- return log_unit_error_errno(UNIT(s)->id, r, "%s: Failed to add even source: %m", UNIT(s)->id);
- }
-
- LIST_PREPEND(fd_store, s->fd_store, fs);
- s->n_fd_store++;
-
- fd = -1;
-
- log_unit_debug(UNIT(s)->id, "%s: added fd to fd store.", UNIT(s)->id);
- }
-
- if (fdset_size(fds) > 0)
- log_unit_warning(UNIT(s)->id, "%s: tried to store more fds than FDStoreMax=%u allows, closing remaining.", UNIT(s)->id, s->n_fd_store_max);
-
- return 0;
-}
-
static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) {
Service *s = SERVICE(u);
_cleanup_free_ char *cc = NULL;
@@ -2801,7 +2842,7 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds)
/* Add the passed fds to the fd store */
if (strv_find(tags, "FDSTORE=1")) {
log_unit_debug(u->id, "%s: got FDSTORE=1", u->id);
- service_add_fd_set(s, fds);
+ service_add_fd_store_set(s, fds);
}
/* Notify clients about changed status or main pid */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-23 18:45:38 +0000