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manager: make list of default controllers configurable

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This commit is contained in:
Lennart Poettering 2010-11-18 00:42:35 +01:00
parent 7838dc3ae1
commit 06d4c99ab3
7 changed files with 85 additions and 32 deletions
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15
man/systemd.conf.xml
View File

@ -112,6 +112,21 @@
whether this job is left to some other
system script.</para></listitem>
</varlistentry>
<varlistentry>
<term><varname>DefaultControllers=cpu</varname></term>
<listitem><para>Configures in which
cgroup controller hierarchies to
create per-service cgroups
automatically, in addition to the
name=systemd named hierarchy. Defaults
to 'cpu'. Takes a space seperated list
of controller names. Pass an empty
string to ensure that systemd does not
touch any hiearchies but its
own.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>

7
src/dbus-manager.c
View File

@ -167,7 +167,9 @@
" <property name=\"NotifySocket\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"ControlGroupHierarchy\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"MountAuto\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n"
" <property name=\"SwapAuto\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"DefaultControllers\" type=\"as\" access=\"read\"/>\n"
\
#ifdef HAVE_SYSV_COMPAT
#define BUS_MANAGER_INTERFACE_PROPERTIES_SYSV \
@ -319,7 +321,8 @@ static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection,
{ "org.freedesktop.systemd1.Manager", "NotifySocket", bus_property_append_string, "s", m->notify_socket },
{ "org.freedesktop.systemd1.Manager", "ControlGroupHierarchy", bus_property_append_string, "s", m->cgroup_hierarchy },
{ "org.freedesktop.systemd1.Manager", "MountAuto", bus_property_append_bool, "b", &m->mount_auto },
{ "org.freedesktop.systemd1.Manager", "SwapAuto", bus_property_append_bool, "b", &m->swap_auto },
{ "org.freedesktop.systemd1.Manager", "SwapAuto", bus_property_append_bool, "b", &m->swap_auto },
{ "org.freedesktop.systemd1.Manager", "DefaultControllers", bus_property_append_strv, "as", m->default_controllers },
#ifdef HAVE_SYSV_COMPAT
{ "org.freedesktop.systemd1.Manager", "SysVConsole", bus_property_append_bool, "b", &m->sysv_console },
{ "org.freedesktop.systemd1.Manager", "SysVInitPath", bus_property_append_strv, "as", m->lookup_paths.sysvinit_path },

7
src/main.c
View File

@ -49,6 +49,7 @@
#include "missing.h"
#include "label.h"
#include "build.h"
#include "strv.h"
static enum {
ACTION_RUN,
@ -72,6 +73,7 @@ static bool arg_sysv_console = true;
static bool arg_mount_auto = true;
static bool arg_swap_auto = true;
static char *arg_console = NULL;
static char **arg_default_controllers = NULL;
static FILE* serialization = NULL;
@ -502,6 +504,7 @@ static int parse_config_file(void) {
{ "CPUAffinity", config_parse_cpu_affinity, NULL, "Manager" },
{ "MountAuto", config_parse_bool, &arg_mount_auto, "Manager" },
{ "SwapAuto", config_parse_bool, &arg_swap_auto, "Manager" },
{ "DefaultControllers", config_parse_strv, &arg_default_controllers, "Manager" },
{ NULL, NULL, NULL, NULL }
};
@ -1089,6 +1092,9 @@ int main(int argc, char *argv[]) {
if (arg_console)
manager_set_console(m, arg_console);
if (arg_default_controllers)
manager_set_default_controllers(m, arg_default_controllers);
if ((r = manager_startup(m, serialization, fds)) < 0)
log_error("Failed to fully start up daemon: %s", strerror(-r));
@ -1211,6 +1217,7 @@ finish:
free(arg_default_unit);
free(arg_console);
strv_free(arg_default_controllers);
dbus_shutdown();

19
src/manager.c
View File

@ -222,6 +222,9 @@ int manager_new(ManagerRunningAs running_as, Manager **_m) {
if (!(m->environment = strv_copy(environ)))
goto fail;
if (!(m->default_controllers = strv_new("cpu", NULL)))
goto fail;
if (!(m->units = hashmap_new(string_hash_func, string_compare_func)))
goto fail;
@ -461,6 +464,8 @@ void manager_free(Manager *m) {
lookup_paths_free(&m->lookup_paths);
strv_free(m->environment);
strv_free(m->default_controllers);
hashmap_free(m->cgroup_bondings);
set_free_free(m->unit_path_cache);
@ -2988,6 +2993,20 @@ void manager_undo_generators(Manager *m) {
m->generator_unit_path = NULL;
}
int manager_set_default_controllers(Manager *m, char **controllers) {
char **l;
assert(m);
if (!(l = strv_copy(controllers)))
return -ENOMEM;
strv_free(m->default_controllers);
m->default_controllers = l;
return 0;
}
static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = {
[MANAGER_SYSTEM] = "system",
[MANAGER_USER] = "user"

2
src/manager.h
View File

@ -142,6 +142,7 @@ struct Manager {
Set *unit_path_cache;
char **environment;
char **default_controllers;
dual_timestamp initrd_timestamp;
dual_timestamp startup_timestamp;
@ -256,6 +257,7 @@ unsigned manager_dispatch_run_queue(Manager *m);
unsigned manager_dispatch_dbus_queue(Manager *m);
int manager_set_console(Manager *m, const char *console);
int manager_set_default_controllers(Manager *m, char **controllers);
int manager_loop(Manager *m);

1
src/system.conf
View File

@ -20,3 +20,4 @@
#CPUAffinity=1 2
#MountAuto=yes
#SwapAuto=yes
#DefaultControllers=cpu

66
src/unit.c
View File

@ -1785,55 +1785,61 @@ fail:
return r;
}
int unit_add_default_cgroups(Unit *u) {
static int unit_add_one_default_cgroup(Unit *u, const char *controller) {
CGroupBonding *b = NULL;
int r = -ENOMEM;
const char * const default_controllers[] = {
SYSTEMD_CGROUP_CONTROLLER,
"cpu",
NULL
};
const char * const*c;
assert(u);
/* Adds in the default cgroups, if it wasn't specified yet */
if (!controller)
controller = SYSTEMD_CGROUP_CONTROLLER;
STRV_FOREACH(c, default_controllers) {
if (cgroup_bonding_find_list(u->meta.cgroup_bondings, controller))
return 0;
if (cgroup_bonding_find_list(u->meta.cgroup_bondings, *c))
continue;
if (!(b = new0(CGroupBonding, 1)))
return -ENOMEM;
if (!(b = new0(CGroupBonding, 1)))
return -ENOMEM;
if (!(b->controller = strdup(controller)))
goto fail;
if (!(b->path = default_cgroup_path(u)))
goto fail;
if (!(b->path = default_cgroup_path(u)))
goto fail;
if (!(b->controller = strdup(*c)))
goto fail;
b->ours = true;
b->essential = streq(controller, SYSTEMD_CGROUP_CONTROLLER);
b->ours = true;
b->essential = c == default_controllers; /* the first one is essential */
if ((r = unit_add_cgroup(u, b)) < 0)
goto fail;
b = NULL;
}
if ((r = unit_add_cgroup(u, b)) < 0)
goto fail;
return 0;
fail:
if (b) {
free(b->path);
free(b->controller);
free(b);
}
free(b->path);
free(b->controller);
free(b);
return r;
}
int unit_add_default_cgroups(Unit *u) {
char **c;
int r;
assert(u);
/* Adds in the default cgroups, if they weren't specified
* otherwise. */
if ((r = unit_add_one_default_cgroup(u, NULL)) < 0)
return r;
STRV_FOREACH(c, u->meta.manager->default_controllers)
if ((r = unit_add_one_default_cgroup(u, *c)) < 0)
return r;
return 0;
}
CGroupBonding* unit_get_default_cgroup(Unit *u) {
assert(u);