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authorLennart Poettering <lennart@poettering.net>2013-01-19 01:01:41 +0100
committerLennart Poettering <lennart@poettering.net>2013-01-19 01:02:30 +0100
commit71645acac27da55d510f2e4d61cc61b4e5b93035 (patch)
treebe5b435bb0c0ccaeee51b69beae571ddd3b5efd4 /src/core/unit.c
parente884315e3d28df0d5f4e7d4590730e9760b8f447 (diff)
unit: optionally allow making cgroup attribute changes persistent
Diffstat (limited to 'src/core/unit.c')
-rw-r--r--src/core/unit.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/core/unit.c b/src/core/unit.c
index 6cf02365e9..98237c8147 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -45,6 +45,7 @@
#include "cgroup-util.h"
#include "missing.h"
#include "cgroup-attr.h"
+#include "mkdir.h"
const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX] = {
[UNIT_SERVICE] = &service_vtable,
@@ -2758,6 +2759,54 @@ ExecContext *unit_get_exec_context(Unit *u) {
return (ExecContext*) ((uint8_t*) u + offset);
}
+int unit_write_drop_in(Unit *u, bool runtime, const char *name, const char *data) {
+ _cleanup_free_ char *p = NULL, *q = NULL;
+ assert(u);
+
+ if (u->manager->running_as != SYSTEMD_SYSTEM)
+ return -ENOTSUP;
+
+ if (!filename_is_safe(name))
+ return -EINVAL;
+
+ p = strjoin(runtime ? "/run/systemd/system/" : "/etc/systemd/systemd/", u->id, ".d", NULL);
+ if (!p)
+ return -ENOMEM;
+
+ q = strjoin(p, "/50-", name, ".conf", NULL);
+ if (!q)
+ return -ENOMEM;
+
+ mkdir_p(p, 0755);
+ return write_one_line_file_atomic(q, data);
+}
+
+int unit_remove_drop_in(Unit *u, bool runtime, const char *name) {
+ _cleanup_free_ char *p = NULL, *q = NULL;
+
+ assert(u);
+
+ if (u->manager->running_as != SYSTEMD_SYSTEM)
+ return -ENOTSUP;
+
+ if (!filename_is_safe(name))
+ return -EINVAL;
+
+ p = strjoin(runtime ? "/run/systemd/system/" : "/etc/systemd/systemd/", u->id, ".d", NULL);
+ if (!p)
+ return -ENOMEM;
+
+ q = strjoin(p, "/50-", name, ".conf", NULL);
+ if (!q)
+ return -ENOMEM;
+
+ if (unlink(q) < 0)
+ return -errno;
+
+ rmdir(p);
+ return 0;
+}
+
static const char* const unit_active_state_table[_UNIT_ACTIVE_STATE_MAX] = {
[UNIT_ACTIVE] = "active",
[UNIT_RELOADING] = "reloading",