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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-10-22 22:16:02 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-11-01 21:20:21 -0400
commitf0bfbfac43b7faa68ef1bb2ad659c191b9ec85d2 (patch)
tree5062be98ff7d49537b2b8e3cc67c8da7d1ca50a8 /src
parent99bdcdc7fc32def6cd6eab69c3869661b4b1888b (diff)
core: when restarting services, don't close fds
We would close all the stored fds in service_release_resources(), which of course broke the whole concept of storing fds over service restart. Fixes #4408.
Diffstat (limited to 'src')
-rw-r--r--src/core/service.c22
-rw-r--r--src/core/unit.c6
-rw-r--r--src/core/unit.h2
3 files changed, 20 insertions, 10 deletions
diff --git a/src/core/service.c b/src/core/service.c
index 0775bd6a9f..00ce500fd3 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -289,7 +289,17 @@ static void service_fd_store_unlink(ServiceFDStore *fs) {
free(fs);
}
-static void service_release_resources(Unit *u) {
+static void service_release_fd_store(Service *s) {
+ assert(s);
+
+ log_unit_debug(UNIT(s), "Releasing all stored fds");
+ while (s->fd_store)
+ service_fd_store_unlink(s->fd_store);
+
+ assert(s->n_fd_store == 0);
+}
+
+static void service_release_resources(Unit *u, bool inactive) {
Service *s = SERVICE(u);
assert(s);
@@ -297,16 +307,14 @@ static void service_release_resources(Unit *u) {
if (!s->fd_store && s->stdin_fd < 0 && s->stdout_fd < 0 && s->stderr_fd < 0)
return;
- log_unit_debug(u, "Releasing all resources.");
+ log_unit_debug(u, "Releasing 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);
-
- assert(s->n_fd_store == 0);
+ if (inactive)
+ service_release_fd_store(s);
}
static void service_done(Unit *u) {
@@ -350,7 +358,7 @@ static void service_done(Unit *u) {
s->timer_event_source = sd_event_source_unref(s->timer_event_source);
- service_release_resources(u);
+ service_release_resources(u, true);
}
static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) {
diff --git a/src/core/unit.c b/src/core/unit.c
index cabb1050a8..8e6cef103b 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -302,6 +302,7 @@ int unit_set_description(Unit *u, const char *description) {
bool unit_check_gc(Unit *u) {
UnitActiveState state;
+ bool inactive;
assert(u);
if (u->job)
@@ -311,16 +312,17 @@ bool unit_check_gc(Unit *u) {
return true;
state = unit_active_state(u);
+ inactive = state == UNIT_INACTIVE;
/* If the unit is inactive and failed and no job is queued for
* it, then release its runtime resources */
if (UNIT_IS_INACTIVE_OR_FAILED(state) &&
UNIT_VTABLE(u)->release_resources)
- UNIT_VTABLE(u)->release_resources(u);
+ UNIT_VTABLE(u)->release_resources(u, inactive);
/* But we keep the unit object around for longer when it is
* referenced or configured to not be gc'ed */
- if (state != UNIT_INACTIVE)
+ if (!inactive)
return true;
if (u->no_gc)
diff --git a/src/core/unit.h b/src/core/unit.h
index adcdee6db6..e01ec7a775 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -372,7 +372,7 @@ struct UnitVTable {
/* When the unit is not running and no job for it queued we
* shall release its runtime resources */
- void (*release_resources)(Unit *u);
+ void (*release_resources)(Unit *u, bool inactive);
/* Invoked on every child that died */
void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);