sd-journal: check if the pointers passed are the same

[elogind.git] / src / shared / cgroup-util.h

diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h
index 2099f934b4eb6a186e76086f88c80d88e59c597b..25dd277ba5c7781fd779b1fc02b542c1556888c7 100644 (file)
--- a/src/shared/cgroup-util.h
+++ b/src/shared/cgroup-util.h
@@ -28,6 +28,21 @@
 #include "set.h"
 #include "def.h"
 
+/*
+ * General rules:
+ *
+ * We accept named hierarchies in the syntax "foo" and "name=foo".
+ *
+ * We expect that named hierarchies do not conflict in name with a
+ * kernel hierarchy, modulo the "name=" prefix.
+ *
+ * We always generate "normalized" controller names, i.e. without the
+ * "name=" prefix.
+ *
+ * We require absolute cgroup paths. When returning, we will always
+ * generate paths with multiple adjacent / removed.
+ */
+
 int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
 int cg_enumerate_tasks(const char *controller, const char *path, FILE **_f);
 int cg_read_pid(FILE *f, pid_t *_pid);
@@ -72,7 +87,7 @@ int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_
 int cg_get_root_path(char **path);
 int cg_get_system_path(char **path);
 int cg_get_user_path(char **path);
-int cg_get_machine_path(char **path);
+int cg_get_machine_path(const char *machine, char **path);
 
 int cg_path_get_session(const char *path, char **session);
 int cg_path_get_owner_uid(const char *path, uid_t *uid);
@@ -95,4 +110,6 @@ char **cg_shorten_controllers(char **controllers);
 int cg_controller_from_attr(const char *attr, char **controller);
 
 char *cg_escape(const char *p);
-char *cg_unescape(const char *p);
+char *cg_unescape(const char *p) _pure_;
+
+bool cg_controller_is_valid(const char *p, bool allow_named);