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Blame SOURCES/0031-manager-configurable-StartLimit-default-values.patch

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From 409dbe76d743448629167f4412f290bba1aae11e Mon Sep 17 00:00:00 2001
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From: Lukas Nykryn <lnykryn@redhat.com>
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Date: Fri, 8 Nov 2013 16:01:22 +0100
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Subject: [PATCH] manager: configurable StartLimit default values
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https://bugzilla.redhat.com/show_bug.cgi?id=821723
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---
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 man/systemd-system.conf.xml | 13 +++++++++++++
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 man/systemd.service.xml     |  9 ++++++---
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 src/core/main.c             |  6 ++++++
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 src/core/manager.h          |  3 +++
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 src/core/service.c          |  4 +++-
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 src/core/system.conf        |  2 ++
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 src/core/user.conf          |  2 ++
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 src/shared/def.h            |  3 +++
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 8 files changed, 38 insertions(+), 4 deletions(-)
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diff --git a/man/systemd-system.conf.xml b/man/systemd-system.conf.xml
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index c1f2648..9a1a99f 100644
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--- a/man/systemd-system.conf.xml
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+++ b/man/systemd-system.conf.xml
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@@ -115,6 +115,19 @@
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                                 <varname>TimeoutSec=</varname> value.
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                                 </para></listitem>
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                         </varlistentry>
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+                        <varlistentry>
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+                                <term><varname>DefaultStartLimitInterval=</varname></term>
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+                                <term><varname>DefaultStartLimitBurst=</varname></term>
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+
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+                                <listitem><para>Configure the default start rate
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+                                limiting, as configured per-service by
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+                                <varname>StartLimitInterval=</varname> and
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+                                <varname>StartLimitBurst=</varname>. See
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+                                <citerefentry><refentrytitle>systemd.service</refentrytitle><manvolnum>5</manvolnum></citerefentry>
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+                                for details on the per-service
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+                                settings).
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+                                </para></listitem>
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+                        </varlistentry>
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                         <varlistentry>
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                                 <term><varname>CPUAffinity=</varname></term>
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diff --git a/man/systemd.service.xml b/man/systemd.service.xml
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index df04048..3f31c11 100644
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--- a/man/systemd.service.xml
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+++ b/man/systemd.service.xml
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@@ -863,12 +863,15 @@
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                                 these two options, this rate limiting
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                                 may be modified. Use
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                                 <varname>StartLimitInterval=</varname>
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-                                to configure the checking interval
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-                                (defaults to 10s, set to 0 to disable
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+                                to configure the checking interval (defaults to
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+                                <varname>DefaultStartLimitInterval=</varname> in
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+                                manager configuration file, set to 0 to disable
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                                 any kind of rate limiting). Use
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                                 <varname>StartLimitBurst=</varname> to
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                                 configure how many starts per interval
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-                                are allowed (defaults to 5). These
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+                                are allowed (defaults to
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+                                <varname>DefaultStartLimitBurst=</varname> in
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+                                manager configuration file). These
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                                 configuration options are particularly
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                                 useful in conjunction with
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                                 <varname>Restart=</varname>, however
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diff --git a/src/core/main.c b/src/core/main.c
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index 937994c..00fd394 100644
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--- a/src/core/main.c
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+++ b/src/core/main.c
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@@ -93,6 +93,8 @@ static ExecOutput arg_default_std_error = EXEC_OUTPUT_INHERIT;
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 static usec_t arg_default_restart_usec = DEFAULT_RESTART_USEC;
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 static usec_t arg_default_timeout_start_usec = DEFAULT_TIMEOUT_USEC;
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 static usec_t arg_default_timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
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+static usec_t arg_default_start_limit_interval = DEFAULT_START_LIMIT_INTERVAL;
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+static unsigned arg_default_start_limit_burst = DEFAULT_START_LIMIT_BURST;
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 static usec_t arg_runtime_watchdog = 0;
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 static usec_t arg_shutdown_watchdog = 10 * USEC_PER_MINUTE;
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 static char **arg_default_environment = NULL;
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@@ -642,6 +644,8 @@ static int parse_config_file(void) {
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                 { "Manager", "DefaultTimeoutStartSec", config_parse_sec,         0, &arg_default_timeout_start_usec },
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                 { "Manager", "DefaultTimeoutStopSec", config_parse_sec,          0, &arg_default_timeout_stop_usec  },
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                 { "Manager", "DefaultRestartSec",     config_parse_sec,          0, &arg_default_restart_usec  },
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+                { "Manager", "DefaultStartLimitInterval", config_parse_sec,      0, &arg_default_start_limit_interval },
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+                { "Manager", "DefaultStartLimitBurst", config_parse_unsigned,    0, &arg_default_start_limit_burst },
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                 { "Manager", "JoinControllers",       config_parse_join_controllers, 0, &arg_join_controllers },
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                 { "Manager", "RuntimeWatchdogSec",    config_parse_sec,          0, &arg_runtime_watchdog    },
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                 { "Manager", "ShutdownWatchdogSec",   config_parse_sec,          0, &arg_shutdown_watchdog   },
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@@ -1551,6 +1555,8 @@ int main(int argc, char *argv[]) {
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         m->default_restart_usec = arg_default_restart_usec;
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         m->default_timeout_start_usec = arg_default_timeout_start_usec;
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         m->default_timeout_stop_usec = arg_default_timeout_stop_usec;
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+        m->default_start_limit_interval = arg_default_start_limit_interval;
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+        m->default_start_limit_burst = arg_default_start_limit_burst;
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         m->runtime_watchdog = arg_runtime_watchdog;
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         m->shutdown_watchdog = arg_shutdown_watchdog;
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         m->userspace_timestamp = userspace_timestamp;
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diff --git a/src/core/manager.h b/src/core/manager.h
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index e74c609..ee42c5e 100644
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--- a/src/core/manager.h
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+++ b/src/core/manager.h
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@@ -233,6 +233,9 @@ struct Manager {
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         usec_t default_restart_usec, default_timeout_start_usec,
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                 default_timeout_stop_usec;
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+        usec_t default_start_limit_interval;
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+        unsigned default_start_limit_burst;
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+
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         struct rlimit *rlimit[RLIMIT_NLIMITS];
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         /* non-zero if we are reloading or reexecuting, */
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diff --git a/src/core/service.c b/src/core/service.c
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index e81aa1f..5662180 100644
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--- a/src/core/service.c
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+++ b/src/core/service.c
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@@ -143,7 +143,9 @@ static void service_init(Unit *u) {
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         kill_context_init(&s->kill_context);
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         cgroup_context_init(&s->cgroup_context);
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-        RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
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+        RATELIMIT_INIT(s->start_limit,
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+                       u->manager->default_start_limit_interval,
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+                       u->manager->default_start_limit_burst);
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         s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
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 }
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diff --git a/src/core/system.conf b/src/core/system.conf
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index 3c6cc03..38bbca5 100644
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--- a/src/core/system.conf
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+++ b/src/core/system.conf
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@@ -27,6 +27,8 @@
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 #DefaultTimeoutStartSec=90s
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 #DefaultTimeoutStopSec=90s
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 #DefaultRestartSec=100ms
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+#DefaultStartLimitInterval=10s
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+#DefaultStartLimitBurst=5
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 #DefaultEnvironment=
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 #DefaultLimitCPU=
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 #DefaultLimitFSIZE=
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diff --git a/src/core/user.conf b/src/core/user.conf
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index b030701..923ca66 100644
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--- a/src/core/user.conf
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+++ b/src/core/user.conf
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@@ -17,3 +17,5 @@
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 #DefaultTimeoutStartSec=90s
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 #DefaultTimeoutStopSec=90s
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 #DefaultRestartSec=100ms
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+#DefaultStartLimitInterval=10s
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+#DefaultStartLimitBurst=5
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diff --git a/src/shared/def.h b/src/shared/def.h
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index edd0bcf..e4ef735 100644
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--- a/src/shared/def.h
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+++ b/src/shared/def.h
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@@ -27,6 +27,9 @@
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 #define DEFAULT_RESTART_USEC (100*USEC_PER_MSEC)
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 #define DEFAULT_CONFIRM_USEC (30*USEC_PER_SEC)
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+#define DEFAULT_START_LIMIT_INTERVAL (10*USEC_PER_SEC)
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+#define DEFAULT_START_LIMIT_BURST 5
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+
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 #define DEFAULT_EXIT_USEC (5*USEC_PER_MINUTE)
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 #define SYSTEMD_CGROUP_CONTROLLER "name=systemd"