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-rw-r--r--src/core/dbus-cgroup.c308
1 files changed, 308 insertions, 0 deletions
diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c
index 859d155ec1..a2a4a6249c 100644
--- a/src/core/dbus-cgroup.c
+++ b/src/core/dbus-cgroup.c
@@ -28,6 +28,76 @@
static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_cgroup_device_policy, cgroup_device_policy, CGroupDevicePolicy);
+static int property_get_io_device_weight(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ CGroupContext *c = userdata;
+ CGroupIODeviceWeight *w;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(c);
+
+ r = sd_bus_message_open_container(reply, 'a', "(st)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(device_weights, w, c->io_device_weights) {
+ r = sd_bus_message_append(reply, "(st)", w->path, w->weight);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
+static int property_get_io_device_limits(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ CGroupContext *c = userdata;
+ CGroupIODeviceLimit *l;
+ int r;
+
+ assert(bus);
+ assert(reply);
+ assert(c);
+
+ r = sd_bus_message_open_container(reply, 'a', "(st)");
+ if (r < 0)
+ return r;
+
+ LIST_FOREACH(device_limits, l, c->io_device_limits) {
+ uint64_t v;
+
+ if (streq(property, "IOReadBandwidthMax"))
+ v = l->rbps_max;
+ else
+ v = l->wbps_max;
+
+ if (v == CGROUP_LIMIT_MAX)
+ continue;
+
+ r = sd_bus_message_append(reply, "(st)", l->path, v);
+ if (r < 0)
+ return r;
+ }
+
+ return sd_bus_message_close_container(reply);
+}
+
static int property_get_blockio_device_weight(
sd_bus *bus,
const char *path,
@@ -141,6 +211,12 @@ const sd_bus_vtable bus_cgroup_vtable[] = {
SD_BUS_PROPERTY("CPUShares", "t", NULL, offsetof(CGroupContext, cpu_shares), 0),
SD_BUS_PROPERTY("StartupCPUShares", "t", NULL, offsetof(CGroupContext, startup_cpu_shares), 0),
SD_BUS_PROPERTY("CPUQuotaPerSecUSec", "t", bus_property_get_usec, offsetof(CGroupContext, cpu_quota_per_sec_usec), 0),
+ SD_BUS_PROPERTY("IOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, io_accounting), 0),
+ SD_BUS_PROPERTY("IOWeight", "t", NULL, offsetof(CGroupContext, io_weight), 0),
+ SD_BUS_PROPERTY("StartupIOWeight", "t", NULL, offsetof(CGroupContext, startup_io_weight), 0),
+ SD_BUS_PROPERTY("IODeviceWeight", "a(st)", property_get_io_device_weight, 0, 0),
+ SD_BUS_PROPERTY("IOReadBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
+ SD_BUS_PROPERTY("IOWriteBandwidthMax", "a(st)", property_get_io_device_limits, 0, 0),
SD_BUS_PROPERTY("BlockIOAccounting", "b", bus_property_get_bool, offsetof(CGroupContext, blockio_accounting), 0),
SD_BUS_PROPERTY("BlockIOWeight", "t", NULL, offsetof(CGroupContext, blockio_weight), 0),
SD_BUS_PROPERTY("StartupBlockIOWeight", "t", NULL, offsetof(CGroupContext, startup_blockio_weight), 0),
@@ -281,6 +357,238 @@ int bus_cgroup_set_property(
return 1;
+ } else if (streq(name, "IOAccounting")) {
+ int b;
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ c->io_accounting = b;
+ unit_invalidate_cgroup(u, CGROUP_MASK_IO);
+ unit_write_drop_in_private(u, mode, name, b ? "IOAccounting=yes" : "IOAccounting=no");
+ }
+
+ return 1;
+
+ } else if (streq(name, "IOWeight")) {
+ uint64_t weight;
+
+ r = sd_bus_message_read(message, "t", &weight);
+ if (r < 0)
+ return r;
+
+ if (!CGROUP_WEIGHT_IS_OK(weight))
+ return sd_bus_error_set_errnof(error, EINVAL, "IOWeight value out of range");
+
+ if (mode != UNIT_CHECK) {
+ c->io_weight = weight;
+ unit_invalidate_cgroup(u, CGROUP_MASK_IO);
+
+ if (weight == CGROUP_WEIGHT_INVALID)
+ unit_write_drop_in_private(u, mode, name, "IOWeight=");
+ else
+ unit_write_drop_in_private_format(u, mode, name, "IOWeight=%" PRIu64, weight);
+ }
+
+ return 1;
+
+ } else if (streq(name, "StartupIOWeight")) {
+ uint64_t weight;
+
+ r = sd_bus_message_read(message, "t", &weight);
+ if (r < 0)
+ return r;
+
+ if (CGROUP_WEIGHT_IS_OK(weight))
+ return sd_bus_error_set_errnof(error, EINVAL, "StartupIOWeight value out of range");
+
+ if (mode != UNIT_CHECK) {
+ c->startup_io_weight = weight;
+ unit_invalidate_cgroup(u, CGROUP_MASK_IO);
+
+ if (weight == CGROUP_WEIGHT_INVALID)
+ unit_write_drop_in_private(u, mode, name, "StartupIOWeight=");
+ else
+ unit_write_drop_in_private_format(u, mode, name, "StartupIOWeight=%" PRIu64, weight);
+ }
+
+ return 1;
+
+ } else if (streq(name, "IOReadBandwidthMax") || streq(name, "IOWriteBandwidthMax")) {
+ const char *path;
+ bool read = true;
+ unsigned n = 0;
+ uint64_t u64;
+
+ if (streq(name, "IOWriteBandwidthMax"))
+ read = false;
+
+ r = sd_bus_message_enter_container(message, 'a', "(st)");
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_read(message, "(st)", &path, &u64)) > 0) {
+
+ if (mode != UNIT_CHECK) {
+ CGroupIODeviceLimit *a = NULL, *b;
+
+ LIST_FOREACH(device_limits, b, c->io_device_limits) {
+ if (path_equal(path, b->path)) {
+ a = b;
+ break;
+ }
+ }
+
+ if (!a) {
+ a = new0(CGroupIODeviceLimit, 1);
+ if (!a)
+ return -ENOMEM;
+
+ a->path = strdup(path);
+ if (!a->path) {
+ free(a);
+ return -ENOMEM;
+ }
+
+ a->rbps_max = CGROUP_LIMIT_MAX;
+ a->wbps_max = CGROUP_LIMIT_MAX;
+
+ LIST_PREPEND(device_limits, c->io_device_limits, a);
+ }
+
+ if (read)
+ a->rbps_max = u64;
+ else
+ a->wbps_max = u64;
+ }
+
+ n++;
+ }
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ CGroupIODeviceLimit *a;
+ _cleanup_free_ char *buf = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ size_t size = 0;
+
+ if (n == 0) {
+ LIST_FOREACH(device_limits, a, c->io_device_limits)
+ if (read)
+ a->rbps_max = CGROUP_LIMIT_MAX;
+ else
+ a->wbps_max = CGROUP_LIMIT_MAX;
+ }
+
+ unit_invalidate_cgroup(u, CGROUP_MASK_IO);
+
+ f = open_memstream(&buf, &size);
+ if (!f)
+ return -ENOMEM;
+
+ if (read) {
+ fputs("IOReadBandwidthMax=\n", f);
+ LIST_FOREACH(device_limits, a, c->io_device_limits)
+ if (a->rbps_max != CGROUP_LIMIT_MAX)
+ fprintf(f, "IOReadBandwidthMax=%s %" PRIu64 "\n", a->path, a->rbps_max);
+ } else {
+ fputs("IOWriteBandwidthMax=\n", f);
+ LIST_FOREACH(device_limits, a, c->io_device_limits)
+ if (a->wbps_max != CGROUP_LIMIT_MAX)
+ fprintf(f, "IOWriteBandwidthMax=%s %" PRIu64 "\n", a->path, a->wbps_max);
+ }
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ return r;
+ unit_write_drop_in_private(u, mode, name, buf);
+ }
+
+ return 1;
+
+ } else if (streq(name, "IODeviceWeight")) {
+ const char *path;
+ uint64_t weight;
+ unsigned n = 0;
+
+ r = sd_bus_message_enter_container(message, 'a', "(st)");
+ if (r < 0)
+ return r;
+
+ while ((r = sd_bus_message_read(message, "(st)", &path, &weight)) > 0) {
+
+ if (!CGROUP_WEIGHT_IS_OK(weight) || weight == CGROUP_WEIGHT_INVALID)
+ return sd_bus_error_set_errnof(error, EINVAL, "IODeviceWeight out of range");
+
+ if (mode != UNIT_CHECK) {
+ CGroupIODeviceWeight *a = NULL, *b;
+
+ LIST_FOREACH(device_weights, b, c->io_device_weights) {
+ if (path_equal(b->path, path)) {
+ a = b;
+ break;
+ }
+ }
+
+ if (!a) {
+ a = new0(CGroupIODeviceWeight, 1);
+ if (!a)
+ return -ENOMEM;
+
+ a->path = strdup(path);
+ if (!a->path) {
+ free(a);
+ return -ENOMEM;
+ }
+ LIST_PREPEND(device_weights,c->io_device_weights, a);
+ }
+
+ a->weight = weight;
+ }
+
+ n++;
+ }
+
+ r = sd_bus_message_exit_container(message);
+ if (r < 0)
+ return r;
+
+ if (mode != UNIT_CHECK) {
+ _cleanup_free_ char *buf = NULL;
+ _cleanup_fclose_ FILE *f = NULL;
+ CGroupIODeviceWeight *a;
+ size_t size = 0;
+
+ if (n == 0) {
+ while (c->io_device_weights)
+ cgroup_context_free_io_device_weight(c, c->io_device_weights);
+ }
+
+ unit_invalidate_cgroup(u, CGROUP_MASK_IO);
+
+ f = open_memstream(&buf, &size);
+ if (!f)
+ return -ENOMEM;
+
+ fputs("IODeviceWeight=\n", f);
+ LIST_FOREACH(device_weights, a, c->io_device_weights)
+ fprintf(f, "IODeviceWeight=%s %" PRIu64 "\n", a->path, a->weight);
+
+ r = fflush_and_check(f);
+ if (r < 0)
+ return r;
+ unit_write_drop_in_private(u, mode, name, buf);
+ }
+
+ return 1;
+
} else if (streq(name, "BlockIOAccounting")) {
int b;
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