diff options
Diffstat (limited to 'src/core/unit.c')
-rw-r--r-- | src/core/unit.c | 53 |
1 files changed, 47 insertions, 6 deletions
diff --git a/src/core/unit.c b/src/core/unit.c index cabb1050a8..e664e23892 100644 --- a/src/core/unit.c +++ b/src/core/unit.c @@ -109,6 +109,24 @@ Unit *unit_new(Manager *m, size_t size) { return u; } +int unit_new_for_name(Manager *m, size_t size, const char *name, Unit **ret) { + Unit *u; + int r; + + u = unit_new(m, size); + if (!u) + return -ENOMEM; + + r = unit_add_name(u, name); + if (r < 0) { + unit_free(u); + return r; + } + + *ret = u; + return r; +} + bool unit_has_name(Unit *u, const char *name) { assert(u); assert(name); @@ -302,6 +320,7 @@ int unit_set_description(Unit *u, const char *description) { bool unit_check_gc(Unit *u) { UnitActiveState state; + bool inactive; assert(u); if (u->job) @@ -311,19 +330,20 @@ 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) + if (u->perpetual) return true; if (u->refs) @@ -924,6 +944,7 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) { "%s\tGC Check Good: %s\n" "%s\tNeed Daemon Reload: %s\n" "%s\tTransient: %s\n" + "%s\tPerpetual: %s\n" "%s\tSlice: %s\n" "%s\tCGroup: %s\n" "%s\tCGroup realized: %s\n" @@ -942,6 +963,7 @@ void unit_dump(Unit *u, FILE *f, const char *prefix) { prefix, yes_no(unit_check_gc(u)), prefix, yes_no(unit_need_daemon_reload(u)), prefix, yes_no(u->transient), + prefix, yes_no(u->perpetual), prefix, strna(unit_slice_name(u)), prefix, strna(u->cgroup_path), prefix, yes_no(u->cgroup_realized), @@ -1450,7 +1472,7 @@ static void unit_status_log_starting_stopping_reloading(Unit *u, JobType t) { format = unit_get_status_message_format(u, t); DISABLE_WARNING_FORMAT_NONLITERAL; - xsprintf(buf, format, unit_description(u)); + snprintf(buf, sizeof buf, format, unit_description(u)); REENABLE_WARNING; mid = t == JOB_START ? SD_MESSAGE_UNIT_STARTING : @@ -1616,6 +1638,18 @@ int unit_stop(Unit *u) { return UNIT_VTABLE(u)->stop(u); } +bool unit_can_stop(Unit *u) { + assert(u); + + if (!unit_supported(u)) + return false; + + if (u->perpetual) + return false; + + return !!UNIT_VTABLE(u)->stop; +} + /* Errors: * -EBADR: This unit type does not support reloading. * -ENOEXEC: Unit is not started. @@ -2150,13 +2184,20 @@ bool unit_job_is_applicable(Unit *u, JobType j) { case JOB_VERIFY_ACTIVE: case JOB_START: - case JOB_STOP: case JOB_NOP: + /* Note that we don't check unit_can_start() here. That's because .device units and suchlike are not + * startable by us but may appear due to external events, and it thus makes sense to permit enqueing + * jobs for it. */ return true; + case JOB_STOP: + /* Similar as above. However, perpetual units can never be stopped (neither explicitly nor due to + * external events), hence it makes no sense to permit enqueing such a request either. */ + return !u->perpetual; + case JOB_RESTART: case JOB_TRY_RESTART: - return unit_can_start(u); + return unit_can_stop(u) && unit_can_start(u); case JOB_RELOAD: case JOB_TRY_RELOAD: |