From c93ff2e913a6da516c83c0d3f8df73004acc6c8b Mon Sep 17 00:00:00 2001 From: Frederic Crozat Date: Wed, 21 Mar 2012 18:03:40 +0100 Subject: [PATCH] main: allow system wide limits for services --- man/systemd.conf.xml | 27 +++++++++++++++++++++++++++ src/core/main.c | 22 ++++++++++++++++++++++ src/core/manager.c | 22 ++++++++++++++++++++++ src/core/manager.h | 3 +++ src/core/service.c | 4 ++++ 5 files changed, 78 insertions(+) diff --git a/man/systemd.conf.xml b/man/systemd.conf.xml index a110f245..7dfaa18c 100644 --- a/man/systemd.conf.xml +++ b/man/systemd.conf.xml @@ -182,6 +182,33 @@ effect if a hardware watchdog is not available. + + + DefaultLimitCPU= + DefaultLimitFSIZE= + DefaultLimitDATA= + DefaultLimitSTACK= + DefaultLimitCORE= + DefaultLimitRSS= + DefaultLimitNOFILE= + DefaultLimitAS= + DefaultLimitNPROC= + DefaultLimitMEMLOCK= + DefaultLimitLOCKS= + DefaultLimitSIGPENDING= + DefaultLimitMSGQUEUE= + DefaultLimitNICE= + DefaultLimitRTPRIO= + DefaultLimitRTTIME= + These settings control + various default resource limits for units. See + setrlimit2 + for details. Use the string + infinity to + configure no limit on a specific + resource. They can be overriden in units files + using corresponding LimitXXXX parameter. + diff --git a/src/core/main.c b/src/core/main.c index 486dac8a..be080d67 100644 --- a/src/core/main.c +++ b/src/core/main.c @@ -86,6 +86,7 @@ static ExecOutput arg_default_std_output = EXEC_OUTPUT_JOURNAL; static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT; static usec_t arg_runtime_watchdog = 0; static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE; +static struct rlimit *arg_default_rlimit[RLIMIT_NLIMITS] = {}; static FILE* serialization = NULL; @@ -666,6 +667,22 @@ static int parse_config_file(void) { { "Manager", "JoinControllers", config_parse_join_controllers, 0, &arg_join_controllers }, { "Manager", "RuntimeWatchdogSec", config_parse_usec, 0, &arg_runtime_watchdog }, { "Manager", "ShutdownWatchdogSec", config_parse_usec, 0, &arg_shutdown_watchdog }, + { "Manager", "DefaultLimitCPU", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CPU]}, + { "Manager", "DefaultLimitFSIZE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_FSIZE]}, + { "Manager", "DefaultLimitDATA", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_DATA]}, + { "Manager", "DefaultLimitSTACK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_STACK]}, + { "Manager", "DefaultLimitCORE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_CORE]}, + { "Manager", "DefaultLimitRSS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RSS]}, + { "Manager", "DefaultLimitNOFILE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NOFILE]}, + { "Manager", "DefaultLimitAS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_AS]}, + { "Manager", "DefaultLimitNPROC", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NPROC]}, + { "Manager", "DefaultLimitMEMLOCK", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MEMLOCK]}, + { "Manager", "DefaultLimitLOCKS", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_LOCKS]}, + { "Manager", "DefaultLimitSIGPENDING",config_parse_limit, 0, &arg_default_rlimit[RLIMIT_SIGPENDING]}, + { "Manager", "DefaultLimitMSGQUEUE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_MSGQUEUE]}, + { "Manager", "DefaultLimitNICE", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_NICE]}, + { "Manager", "DefaultLimitRTPRIO", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTPRIO]}, + { "Manager", "DefaultLimitRTTIME", config_parse_limit, 0, &arg_default_rlimit[RLIMIT_RTTIME]}, { NULL, NULL, NULL, 0, NULL } }; @@ -1470,6 +1487,8 @@ int main(int argc, char *argv[]) { m->runtime_watchdog = arg_runtime_watchdog; m->shutdown_watchdog = arg_shutdown_watchdog; + manager_set_default_rlimits(m, arg_default_rlimit); + if (dual_timestamp_is_set(&initrd_timestamp)) m->initrd_timestamp = initrd_timestamp; @@ -1629,6 +1648,9 @@ finish: if (m) manager_free(m); + for (j = 0; j < RLIMIT_NLIMITS; j++) + free (arg_default_rlimit[j]); + free(arg_default_unit); strv_free(arg_default_controllers); free_join_controllers(); diff --git a/src/core/manager.c b/src/core/manager.c index 3ccb392f..30437425 100644 --- a/src/core/manager.c +++ b/src/core/manager.c @@ -476,6 +476,7 @@ static void manager_clear_jobs_and_units(Manager *m) { void manager_free(Manager *m) { UnitType c; + int i; assert(m); @@ -525,6 +526,9 @@ void manager_free(Manager *m) { free(m->switch_root); free(m->switch_root_init); + for (i = 0; i < RLIMIT_NLIMITS; i++) + free(m->rlimit[i]); + free(m); } @@ -2136,6 +2140,24 @@ int manager_set_default_controllers(Manager *m, char **controllers) { return 0; } +int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit) { + int i; + + assert(m); + + for (i = 0; i < RLIMIT_NLIMITS; i++) { + if (default_rlimit[i]) { + m->rlimit[i] = newdup(struct rlimit, default_rlimit[i], 1); + + if (!m->rlimit[i]) + return -ENOMEM; + } + } + + return 0; +} + + void manager_recheck_journal(Manager *m) { Unit *u; diff --git a/src/core/manager.h b/src/core/manager.h index 046540d8..9b947c95 100644 --- a/src/core/manager.h +++ b/src/core/manager.h @@ -226,6 +226,8 @@ struct Manager { ExecOutput default_std_output, default_std_error; + struct rlimit *rlimit[RLIMIT_NLIMITS]; + /* non-zero if we are reloading or reexecuting, */ int n_reloading; @@ -268,6 +270,7 @@ unsigned manager_dispatch_run_queue(Manager *m); unsigned manager_dispatch_dbus_queue(Manager *m); int manager_set_default_controllers(Manager *m, char **controllers); +int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); int manager_loop(Manager *m); diff --git a/src/core/service.c b/src/core/service.c index 28049a33..2bd29ff7 100644 --- a/src/core/service.c +++ b/src/core/service.c @@ -110,6 +110,7 @@ static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = { static void service_init(Unit *u) { Service *s = SERVICE(u); + int i; assert(u); assert(u->load_state == UNIT_STUB); @@ -129,6 +130,9 @@ static void service_init(Unit *u) { s->guess_main_pid = true; exec_context_init(&s->exec_context); + for (i = 0; i < RLIMIT_NLIMITS; i++) + if (UNIT(s)->manager->rlimit[i]) + s->exec_context.rlimit[i] = newdup(struct rlimit, UNIT(s)->manager->rlimit[i], 1); RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5); -- 2.39.5