cgroup: the "tasks" attribute is obsolete, cgroup.procs is the new replacement

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

diff --git a/src/shared/cgroup-util.h b/src/shared/cgroup-util.h
index 920cf631e538d5357aef93ae2454a00cefc5a488..5835e04075dbb37918537133f741d070798a8f75 100644 (file)
--- a/src/shared/cgroup-util.h
+++ b/src/shared/cgroup-util.h
@@ -28,8 +28,22 @@
 #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);
 
 int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d);
@@ -44,18 +58,19 @@ int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto,
 
 int cg_split_spec(const char *spec, char **controller, char **path);
 int cg_join_spec(const char *controller, const char *path, char **spec);
-int cg_fix_path(const char *path, char **result);
+int cg_mangle_path(const char *path, char **result);
 
 int cg_get_path(const char *controller, const char *path, const char *suffix, char **fs);
 int cg_get_path_and_check(const char *controller, const char *path, const char *suffix, char **fs);
-int cg_get_by_pid(const char *controller, pid_t pid, char **path);
+
+int cg_pid_get_path(const char *controller, pid_t pid, char **path);
 
 int cg_trim(const char *controller, const char *path, bool delete_root);
 
 int cg_rmdir(const char *controller, const char *path, bool honour_sticky);
 int cg_delete(const char *controller, const char *path);
 
-int cg_create(const char *controller, const char *path);
+int cg_create(const char *controller, const char *path, const char *suffix);
 int cg_attach(const char *controller, const char *path, pid_t pid);
 int cg_create_and_attach(const char *controller, const char *path, pid_t pid);
 
@@ -68,11 +83,32 @@ int cg_is_empty(const char *controller, const char *path, bool ignore_self);
 int cg_is_empty_by_spec(const char *spec, bool ignore_self);
 int cg_is_empty_recursive(const char *controller, const char *path, bool ignore_self);
 
+int cg_get_root_path(char **path);
+int cg_get_system_path(char **path);
 int cg_get_user_path(char **path);
-int cg_pid_get_cgroup(pid_t pid, char **root, char **cgroup);
+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);
+int cg_path_get_unit(const char *path, char **unit);
+int cg_path_get_user_unit(const char *path, char **unit);
+int cg_path_get_machine_name(const char *path, char **machine);
+
+int cg_pid_get_path_shifted(pid_t pid, char **root, char **cgroup);
+
+int cg_pid_get_session(pid_t pid, char **session);
+int cg_pid_get_owner_uid(pid_t pid, uid_t *uid);
 int cg_pid_get_unit(pid_t pid, char **unit);
 int cg_pid_get_user_unit(pid_t pid, char **unit);
+int cg_pid_get_machine_name(pid_t pid, char **machine);
 
-int cgroup_to_unit(char *cgroup, char **unit);
+int cg_path_decode_unit(const char *cgroup, char **unit);
 
 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) _pure_;
+
+bool cg_controller_is_valid(const char *p, bool allow_named);