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authorLennart Poettering <lennart@poettering.net>2013-06-27 21:50:35 +0200
committerLennart Poettering <lennart@poettering.net>2013-06-27 21:50:35 +0200
commitb42defe3b8ed3947d85db654a6cdb1b9999f394d (patch)
treec5ff15f05ca1a314cb76ce144f2da79b80cac9d6 /src/core
parent8e2af478402414f060bbc16e1b4bbe7de1779c13 (diff)
dbus: make more cgroup attributes runtime settable
Diffstat (limited to 'src/core')
-rw-r--r--src/core/dbus-cgroup.c86
-rw-r--r--src/core/unit.c19
-rw-r--r--src/core/unit.h1
3 files changed, 98 insertions, 8 deletions
diff --git a/src/core/dbus-cgroup.c b/src/core/dbus-cgroup.c
index f7d1dd12ad..ae360eae33 100644
--- a/src/core/dbus-cgroup.c
+++ b/src/core/dbus-cgroup.c
@@ -152,50 +152,120 @@ int bus_cgroup_set_property(
assert(i);
if (streq(name, "CPUAccounting")) {
- dbus_bool_t b;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_BOOLEAN)
return -EINVAL;
if (mode != UNIT_CHECK) {
+ dbus_bool_t b;
dbus_message_iter_get_basic(i, &b);
c->cpu_accounting = b;
- unit_write_drop_in(u, mode, "cpu-accounting", b ? "CPUAccounting=yes" : "CPUAccounting=no");
+ unit_write_drop_in_private_section(u, mode, "cpu-accounting", b ? "CPUAccounting=yes" : "CPUAccounting=no");
+ }
+
+ return 1;
+
+ } else if (streq(name, "CPUShares")) {
+ uint64_t u64;
+ unsigned long ul;
+
+ if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_UINT64)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(i, &u64);
+ ul = (unsigned long) u64;
+
+ if (u64 <= 0 || u64 != (uint64_t) ul)
+ return -EINVAL;
+
+ if (mode != UNIT_CHECK) {
+ char buf[sizeof("CPUShares=") + DECIMAL_STR_MAX(ul)];
+ c->cpu_shares = ul;
+
+ sprintf(buf, "CPUShares=%lu", ul);
+ unit_write_drop_in_private_section(u, mode, "cpu-shares", buf);
}
return 1;
} else if (streq(name, "BlockIOAccounting")) {
- dbus_bool_t b;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_BOOLEAN)
return -EINVAL;
if (mode != UNIT_CHECK) {
+ dbus_bool_t b;
dbus_message_iter_get_basic(i, &b);
c->blockio_accounting = b;
- unit_write_drop_in(u, mode, "block-io-accounting", b ? "BlockIOAccounting=yes" : "BlockIOAccounting=no");
+ unit_write_drop_in_private_section(u, mode, "block-io-accounting", b ? "BlockIOAccounting=yes" : "BlockIOAccounting=no");
}
return 1;
+
+ } else if (streq(name, "BlockIOWeight")) {
+ uint64_t u64;
+ unsigned long ul;
+
+ if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_UINT64)
+ return -EINVAL;
+
+ dbus_message_iter_get_basic(i, &u64);
+ ul = (unsigned long) u64;
+
+ if (u64 < 10 || u64 > 1000)
+ return -EINVAL;
+
+ if (mode != UNIT_CHECK) {
+ char buf[sizeof("BlockIOWeight=") + DECIMAL_STR_MAX(ul)];
+ c->cpu_shares = ul;
+
+ sprintf(buf, "BlockIOWeight=%lu", ul);
+ unit_write_drop_in_private_section(u, mode, "blockio-weight", buf);
+ }
+
+ return 1;
+
} else if (streq(name, "MemoryAccounting")) {
- dbus_bool_t b;
if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_BOOLEAN)
return -EINVAL;
if (mode != UNIT_CHECK) {
+ dbus_bool_t b;
dbus_message_iter_get_basic(i, &b);
- c->blockio_accounting = b;
- unit_write_drop_in(u, mode, "memory-accounting", b ? "MemoryAccounting=yes" : "MemoryAccounting=no");
+ c->memory_accounting = b;
+ unit_write_drop_in_private_section(u, mode, "memory-accounting", b ? "MemoryAccounting=yes" : "MemoryAccounting=no");
}
return 1;
- }
+ } else if (streq(name, "MemoryLimit") || streq(name, "MemorySoftLimit")) {
+
+ if (dbus_message_iter_get_arg_type(i) != DBUS_TYPE_UINT64)
+ return -EINVAL;
+
+ if (mode != UNIT_CHECK) {
+ uint64_t limit;
+ char buf[sizeof("MemorySoftLimit=") + DECIMAL_STR_MAX(limit)];
+
+ dbus_message_iter_get_basic(i, &limit);
+
+ if (streq(name, "MemoryLimit")) {
+ c->memory_limit = limit;
+ sprintf(buf, "MemoryLimit=%" PRIu64, limit);
+ unit_write_drop_in_private_section(u, mode, "memory-limit", buf);
+ } else {
+ c->memory_soft_limit = limit;
+ sprintf(buf, "MemorySoftLimit=%" PRIu64, limit);
+ unit_write_drop_in_private_section(u, mode, "memory-soft-limit", buf);
+ }
+ }
+
+ return 1;
+ }
return 0;
}
diff --git a/src/core/unit.c b/src/core/unit.c
index be554dac20..211704e230 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -2691,6 +2691,8 @@ int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, co
int r;
assert(u);
+ assert(name);
+ assert(data);
if (!(mode & (UNIT_PERSISTENT|UNIT_RUNTIME)))
return 0;
@@ -2703,6 +2705,23 @@ int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, co
return write_string_file_atomic_label(q, data);
}
+int unit_write_drop_in_private_section(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data) {
+ _cleanup_free_ char *ndata = NULL;
+
+ assert(u);
+ assert(name);
+ assert(data);
+
+ if (!UNIT_VTABLE(u)->private_section)
+ return -EINVAL;
+
+ ndata = strjoin("[", UNIT_VTABLE(u)->private_section, "]\n", data, NULL);
+ if (!ndata)
+ return -ENOMEM;
+
+ return unit_write_drop_in(u, mode, name, ndata);
+}
+
int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name) {
_cleanup_free_ char *p = NULL, *q = NULL;
int r;
diff --git a/src/core/unit.h b/src/core/unit.h
index c344719b16..be6abaff98 100644
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -590,6 +590,7 @@ ExecContext *unit_get_exec_context(Unit *u) _pure_;
CGroupContext *unit_get_cgroup_context(Unit *u) _pure_;
int unit_write_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
+int unit_write_drop_in_private_section(Unit *u, UnitSetPropertiesMode mode, const char *name, const char *data);
int unit_remove_drop_in(Unit *u, UnitSetPropertiesMode mode, const char *name);
int unit_kill_context(Unit *u, KillContext *c, bool sigkill, pid_t main_pid, pid_t control_pid, bool main_pid_alien);