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core: always set output arg in unit_status_string()

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As requested in https://github.com/systemd/systemd/pull/20058#pullrequestreview-696942153.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2021-07-01 10:19:06 +02:00
parent a7b73cc867
commit e6a16a821c
1 changed files with 19 additions and 11 deletions
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30
src/core/unit.c
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@ -1340,27 +1340,35 @@ const char* unit_description(Unit *u) {
return strna(u->id);
}
const char* unit_status_string(Unit *u, char **combined) {
const char* unit_status_string(Unit *u, char **ret_combined_buffer) {
assert(u);
assert(u->id);
/* Return u->id, u->description, or "{u->id} - {u->description}".
* Versions with u->description are only used if it is set.
* The last option is used if configured and the caller provided 'combined' pointer. */
* The last option is used if configured and the caller provided the 'ret_combined_buffer'
* pointer.
*
* Note that *ret_combined_buffer may be set to NULL. */
if (!u->description ||
streq(u->description, u->id) ||
u->manager->status_unit_format == STATUS_UNIT_FORMAT_NAME ||
(u->manager->status_unit_format == STATUS_UNIT_FORMAT_COMBINED && !combined))
return u->id;
(u->manager->status_unit_format == STATUS_UNIT_FORMAT_COMBINED && !ret_combined_buffer) ||
streq(u->description, u->id)) {
if (u->description && u->manager->status_unit_format == STATUS_UNIT_FORMAT_COMBINED && combined) {
char *t = strjoin(u->id, " - ", u->description);
if (t) {
*combined = t;
return t;
if (ret_combined_buffer)
*ret_combined_buffer = NULL;
return u->id;
}
if (ret_combined_buffer) {
if (u->manager->status_unit_format == STATUS_UNIT_FORMAT_COMBINED) {
*ret_combined_buffer = strjoin(u->id, " - ", u->description);
if (*ret_combined_buffer)
return *ret_combined_buffer;
log_oom(); /* Fall back to ->description */
} else
log_oom();
*ret_combined_buffer = NULL;
}
return u->description;