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-rw-r--r--src/swap.c122
1 files changed, 72 insertions, 50 deletions
diff --git a/src/swap.c b/src/swap.c
index b4a5b3c084..9c72732b94 100644
--- a/src/swap.c
+++ b/src/swap.c
@@ -90,7 +90,7 @@ static void swap_init(Unit *u) {
s->timer_watch.type = WATCH_INVALID;
- s->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
+ s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
UNIT(s)->ignore_on_isolate = true;
}
@@ -571,6 +571,7 @@ static void swap_dump(Unit *u, FILE *f, const char *prefix) {
fprintf(f,
"%sSwap State: %s\n"
+ "%sResult: %s\n"
"%sWhat: %s\n"
"%sPriority: %i\n"
"%sNoAuto: %s\n"
@@ -580,6 +581,7 @@ static void swap_dump(Unit *u, FILE *f, const char *prefix) {
"%sFrom /proc/swaps: %s\n"
"%sFrom fragment: %s\n",
prefix, swap_state_to_string(s->state),
+ prefix, swap_result_to_string(s->result),
prefix, s->what,
prefix, p->priority,
prefix, yes_no(p->noauto),
@@ -636,33 +638,33 @@ fail:
return r;
}
-static void swap_enter_dead(Swap *s, bool success) {
+static void swap_enter_dead(Swap *s, SwapResult f) {
assert(s);
- if (!success)
- s->failure = true;
+ if (f != SWAP_SUCCESS)
+ s->result = f;
- swap_set_state(s, s->failure ? SWAP_FAILED : SWAP_DEAD);
+ swap_set_state(s, s->result != SWAP_SUCCESS ? SWAP_FAILED : SWAP_DEAD);
}
-static void swap_enter_active(Swap *s, bool success) {
+static void swap_enter_active(Swap *s, SwapResult f) {
assert(s);
- if (!success)
- s->failure = true;
+ if (f != SWAP_SUCCESS)
+ s->result = f;
swap_set_state(s, SWAP_ACTIVE);
}
-static void swap_enter_signal(Swap *s, SwapState state, bool success) {
+static void swap_enter_signal(Swap *s, SwapState state, SwapResult f) {
int r;
Set *pid_set = NULL;
bool wait_for_exit = false;
assert(s);
- if (!success)
- s->failure = true;
+ if (f != SWAP_SUCCESS)
+ s->result = f;
if (s->exec_context.kill_mode != KILL_NONE) {
int sig = (state == SWAP_ACTIVATING_SIGTERM ||
@@ -705,14 +707,14 @@ static void swap_enter_signal(Swap *s, SwapState state, bool success) {
swap_set_state(s, state);
} else
- swap_enter_dead(s, true);
+ swap_enter_dead(s, SWAP_SUCCESS);
return;
fail:
log_warning("%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
- swap_enter_dead(s, false);
+ swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
if (pid_set)
set_free(pid_set);
@@ -767,17 +769,14 @@ static void swap_enter_activating(Swap *s) {
fail:
log_warning("%s failed to run 'swapon' task: %s", UNIT(s)->id, strerror(-r));
- swap_enter_dead(s, false);
+ swap_enter_dead(s, SWAP_FAILURE_RESOURCES);
}
-static void swap_enter_deactivating(Swap *s, bool success) {
+static void swap_enter_deactivating(Swap *s) {
int r;
assert(s);
- if (!success)
- s->failure = true;
-
s->control_command_id = SWAP_EXEC_DEACTIVATE;
s->control_command = s->exec_command + SWAP_EXEC_DEACTIVATE;
@@ -799,7 +798,7 @@ static void swap_enter_deactivating(Swap *s, bool success) {
fail:
log_warning("%s failed to run 'swapoff' task: %s", UNIT(s)->id, strerror(-r));
- swap_enter_active(s, false);
+ swap_enter_active(s, SWAP_FAILURE_RESOURCES);
}
static int swap_start(Unit *u) {
@@ -822,7 +821,7 @@ static int swap_start(Unit *u) {
assert(s->state == SWAP_DEAD || s->state == SWAP_FAILED);
- s->failure = false;
+ s->result = SWAP_SUCCESS;
swap_enter_activating(s);
return 0;
}
@@ -842,7 +841,7 @@ static int swap_stop(Unit *u) {
assert(s->state == SWAP_ACTIVATING ||
s->state == SWAP_ACTIVE);
- swap_enter_deactivating(s, true);
+ swap_enter_deactivating(s);
return 0;
}
@@ -854,7 +853,7 @@ static int swap_serialize(Unit *u, FILE *f, FDSet *fds) {
assert(fds);
unit_serialize_item(u, f, "state", swap_state_to_string(s->state));
- unit_serialize_item(u, f, "failure", yes_no(s->failure));
+ unit_serialize_item(u, f, "result", swap_result_to_string(s->result));
if (s->control_pid > 0)
unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
@@ -878,14 +877,14 @@ static int swap_deserialize_item(Unit *u, const char *key, const char *value, FD
log_debug("Failed to parse state value %s", value);
else
s->deserialized_state = state;
- } else if (streq(key, "failure")) {
- int b;
-
- if ((b = parse_boolean(value)) < 0)
- log_debug("Failed to parse failure value %s", value);
- else
- s->failure = b || s->failure;
-
+ } else if (streq(key, "result")) {
+ SwapResult f;
+
+ f = swap_result_from_string(value);
+ if (f < 0)
+ log_debug("Failed to parse result value %s", value);
+ else if (f != SWAP_SUCCESS)
+ s->result = f;
} else if (streq(key, "control-pid")) {
pid_t pid;
@@ -932,7 +931,7 @@ static bool swap_check_gc(Unit *u) {
static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
Swap *s = SWAP(u);
- bool success;
+ SwapResult f;
assert(s);
assert(pid >= 0);
@@ -942,16 +941,28 @@ static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
s->control_pid = 0;
- success = is_clean_exit(code, status);
- s->failure = s->failure || !success;
+ if (is_clean_exit(code, status))
+ f = SWAP_SUCCESS;
+ else if (code == CLD_EXITED)
+ f = SWAP_FAILURE_EXIT_CODE;
+ else if (code == CLD_KILLED)
+ f = SWAP_FAILURE_SIGNAL;
+ else if (code == CLD_DUMPED)
+ f = SWAP_FAILURE_CORE_DUMP;
+ else
+ assert_not_reached("Unknown code");
+
+ if (f != SWAP_SUCCESS)
+ s->result = f;
if (s->control_command) {
exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
+
s->control_command = NULL;
s->control_command_id = _SWAP_EXEC_COMMAND_INVALID;
}
- log_full(success ? LOG_DEBUG : LOG_NOTICE,
+ log_full(f == SWAP_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
"%s swap process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
switch (s->state) {
@@ -960,20 +971,20 @@ static void swap_sigchld_event(Unit *u, pid_t pid, int code, int status) {
case SWAP_ACTIVATING_SIGTERM:
case SWAP_ACTIVATING_SIGKILL:
- if (success)
- swap_enter_active(s, true);
+ if (f == SWAP_SUCCESS)
+ swap_enter_active(s, f);
else
- swap_enter_dead(s, false);
+ swap_enter_dead(s, f);
break;
case SWAP_DEACTIVATING:
case SWAP_DEACTIVATING_SIGKILL:
case SWAP_DEACTIVATING_SIGTERM:
- if (success)
- swap_enter_dead(s, true);
+ if (f == SWAP_SUCCESS)
+ swap_enter_dead(s, f);
else
- swap_enter_dead(s, false);
+ swap_enter_dead(s, f);
break;
default:
@@ -999,38 +1010,38 @@ static void swap_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
case SWAP_ACTIVATING:
log_warning("%s activation timed out. Stopping.", u->id);
- swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, false);
+ swap_enter_signal(s, SWAP_ACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
break;
case SWAP_DEACTIVATING:
log_warning("%s deactivation timed out. Stopping.", u->id);
- swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, false);
+ swap_enter_signal(s, SWAP_DEACTIVATING_SIGTERM, SWAP_FAILURE_TIMEOUT);
break;
case SWAP_ACTIVATING_SIGTERM:
if (s->exec_context.send_sigkill) {
log_warning("%s activation timed out. Killing.", u->id);
- swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, false);
+ swap_enter_signal(s, SWAP_ACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
log_warning("%s activation timed out. Skipping SIGKILL. Ignoring.", u->id);
- swap_enter_dead(s, false);
+ swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
}
break;
case SWAP_DEACTIVATING_SIGTERM:
if (s->exec_context.send_sigkill) {
log_warning("%s deactivation timed out. Killing.", u->id);
- swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, false);
+ swap_enter_signal(s, SWAP_DEACTIVATING_SIGKILL, SWAP_FAILURE_TIMEOUT);
} else {
log_warning("%s deactivation timed out. Skipping SIGKILL. Ignoring.", u->id);
- swap_enter_dead(s, false);
+ swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
}
break;
case SWAP_ACTIVATING_SIGKILL:
case SWAP_DEACTIVATING_SIGKILL:
log_warning("%s swap process still around after SIGKILL. Ignoring.", u->id);
- swap_enter_dead(s, false);
+ swap_enter_dead(s, SWAP_FAILURE_TIMEOUT);
break;
default:
@@ -1129,7 +1140,7 @@ int swap_fd_event(Manager *m, int events) {
switch (swap->state) {
case SWAP_ACTIVE:
- swap_enter_dead(swap, true);
+ swap_enter_dead(swap, SWAP_SUCCESS);
break;
default:
@@ -1145,7 +1156,7 @@ int swap_fd_event(Manager *m, int events) {
case SWAP_DEAD:
case SWAP_FAILED:
- swap_enter_active(swap, true);
+ swap_enter_active(swap, SWAP_SUCCESS);
break;
default:
@@ -1272,7 +1283,7 @@ static void swap_reset_failed(Unit *u) {
if (s->state == SWAP_FAILED)
swap_set_state(s, SWAP_DEAD);
- s->failure = false;
+ s->result = SWAP_SUCCESS;
}
static int swap_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
@@ -1343,6 +1354,17 @@ static const char* const swap_exec_command_table[_SWAP_EXEC_COMMAND_MAX] = {
DEFINE_STRING_TABLE_LOOKUP(swap_exec_command, SwapExecCommand);
+static const char* const swap_result_table[_SWAP_RESULT_MAX] = {
+ [SWAP_SUCCESS] = "success",
+ [SWAP_FAILURE_RESOURCES] = "resources",
+ [SWAP_FAILURE_TIMEOUT] = "timeout",
+ [SWAP_FAILURE_EXIT_CODE] = "exit-code",
+ [SWAP_FAILURE_SIGNAL] = "signal",
+ [SWAP_FAILURE_CORE_DUMP] = "core-dump"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(swap_result, SwapResult);
+
const UnitVTable swap_vtable = {
.suffix = ".swap",
.object_size = sizeof(Swap),
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-12-16 13:51:19 +0000