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core: support CollectMode in Varlink StartTransient

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The io.systemd.Unit context exposes CollectMode, but StartTransient
rejects it as unsupported. This prevents Varlink clients from selecting
whether failed transient units should be garbage-collected.

Accept CollectMode when creating transient units and persist the setting
in the runtime unit configuration. Extend the integration test to verify
the value in both the Varlink response and the resulting unit.
This commit is contained in:
Tim Culverhouse
2026-07-25 15:35:28 +09:00
committed by Yu Watanabe
parent e09402326c
commit 4517e7e4d9
3 changed files with 19 additions and 7 deletions
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src/core/varlink-unit.c
+15 -5
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@@ -663,6 +663,7 @@ static void transient_exec_command_item_done(TransientExecCommandItem *i) {
static JSON_DISPATCH_ENUM_DEFINE(dispatch_service_type, ServiceType, service_type_from_string);
static JSON_DISPATCH_ENUM_DEFINE(dispatch_job_mode, JobMode, job_mode_from_string);
static JSON_DISPATCH_ENUM_DEFINE(dispatch_collect_mode, CollectMode, collect_mode_from_string);
typedef struct TransientWorkingDirectory {
const char *path;
@@ -811,6 +812,7 @@ static int dispatch_transient_exec_command(const char *name, sd_json_variant *va
typedef struct StartTransientContextParameters {
const char *id;
const char *description;
CollectMode collect_mode;
TransientExecContextParameters exec;
TransientServiceParameters service;
const char *bad_exec_field; /* Set by inner Exec dispatcher to the unknown sub-property name */
@@ -827,7 +829,9 @@ static void transient_exec_context_parameters_init(TransientExecContextParameter
static void start_transient_context_parameters_init(StartTransientContextParameters *p) {
assert(p);
*p = (StartTransientContextParameters) {};
*p = (StartTransientContextParameters) {
.collect_mode = _COLLECT_MODE_INVALID,
};
transient_exec_context_parameters_init(&p->exec);
transient_service_parameters_init(&p->service);
}
@@ -973,10 +977,11 @@ static int dispatch_transient_service(const char *name, sd_json_variant *variant
static int dispatch_transient_context(const char *name, sd_json_variant *variant, sd_json_dispatch_flags_t flags, void *userdata) {
static const sd_json_dispatch_field context_dispatch[] = {
{ "ID", SD_JSON_VARIANT_STRING, json_dispatch_const_unit_name, offsetof(StartTransientContextParameters, id), SD_JSON_MANDATORY },
{ "Description", SD_JSON_VARIANT_STRING, sd_json_dispatch_const_string, offsetof(StartTransientContextParameters, description), 0 },
{ "Exec", SD_JSON_VARIANT_OBJECT, dispatch_transient_exec_context, 0, 0 },
{ "Service", SD_JSON_VARIANT_OBJECT, dispatch_transient_service, 0, 0 },
{ "ID", SD_JSON_VARIANT_STRING, json_dispatch_const_unit_name, offsetof(StartTransientContextParameters, id), SD_JSON_MANDATORY },
{ "Description", SD_JSON_VARIANT_STRING, sd_json_dispatch_const_string, offsetof(StartTransientContextParameters, description), 0 },
{ "CollectMode", SD_JSON_VARIANT_STRING, dispatch_collect_mode, offsetof(StartTransientContextParameters, collect_mode), 0 },
{ "Exec", SD_JSON_VARIANT_OBJECT, dispatch_transient_exec_context, 0, 0 },
{ "Service", SD_JSON_VARIANT_OBJECT, dispatch_transient_service, 0, 0 },
{}
};
@@ -1017,6 +1022,11 @@ static int transient_unit_apply_properties(Unit *u, StartTransientContextParamet
unit_write_settingf(u, UNIT_RUNTIME|UNIT_ESCAPE_SPECIFIERS, "Description", "Description=%s", p->description);
}
if (p->collect_mode >= 0) {
u->collect_mode = p->collect_mode;
unit_write_settingf(u, UNIT_RUNTIME, "CollectMode", "CollectMode=%s", collect_mode_to_string(p->collect_mode));
}
return 0;
}