X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fbasic%2Fcgroup-util.h;h=3b63192459ee2469fda93cfa2bb36def3f649a08;hp=8fa1e9f8257093a969d5f21919074b18279c1842;hb=d77d27f4ca2945f88343fbe72ed0bf1236ad2aa6;hpb=faf2e887be42215c1999950d16d1975e70bbdfe9;ds=sidebyside
diff --git a/src/basic/cgroup-util.h b/src/basic/cgroup-util.h
index 8fa1e9f82..3b6319245 100644
--- a/src/basic/cgroup-util.h
+++ b/src/basic/cgroup-util.h
@@ -1,5 +1,3 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
#pragma once
/***
@@ -21,20 +19,26 @@
along with systemd; If not, see .
***/
-#include
-#include
#include
+#include
+#include
+#include
+#include
-#include "set.h"
#include "def.h"
+//#include "hashmap.h"
+//#include "macro.h"
+#include "set.h"
/* An enum of well known cgroup controllers */
typedef enum CGroupController {
CGROUP_CONTROLLER_CPU,
CGROUP_CONTROLLER_CPUACCT,
+ CGROUP_CONTROLLER_IO,
CGROUP_CONTROLLER_BLKIO,
CGROUP_CONTROLLER_MEMORY,
- CGROUP_CONTROLLER_DEVICE,
+ CGROUP_CONTROLLER_DEVICES,
+ CGROUP_CONTROLLER_PIDS,
_CGROUP_CONTROLLER_MAX,
_CGROUP_CONTROLLER_INVALID = -1,
} CGroupController;
@@ -45,12 +49,84 @@ typedef enum CGroupController {
typedef enum CGroupMask {
CGROUP_MASK_CPU = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_CPU),
CGROUP_MASK_CPUACCT = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_CPUACCT),
+ CGROUP_MASK_IO = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_IO),
CGROUP_MASK_BLKIO = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_BLKIO),
CGROUP_MASK_MEMORY = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_MEMORY),
- CGROUP_MASK_DEVICE = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_DEVICE),
+ CGROUP_MASK_DEVICES = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_DEVICES),
+ CGROUP_MASK_PIDS = CGROUP_CONTROLLER_TO_MASK(CGROUP_CONTROLLER_PIDS),
_CGROUP_MASK_ALL = CGROUP_CONTROLLER_TO_MASK(_CGROUP_CONTROLLER_MAX) - 1
} CGroupMask;
+#if 0 /// UNNEEDED by elogind
+/* Special values for all weight knobs on unified hierarchy */
+#define CGROUP_WEIGHT_INVALID ((uint64_t) -1)
+#define CGROUP_WEIGHT_MIN UINT64_C(1)
+#define CGROUP_WEIGHT_MAX UINT64_C(10000)
+#define CGROUP_WEIGHT_DEFAULT UINT64_C(100)
+#endif // 0
+
+#define CGROUP_LIMIT_MIN UINT64_C(0)
+#define CGROUP_LIMIT_MAX ((uint64_t) -1)
+
+#if 0 /// UNNEEDED by elogind
+static inline bool CGROUP_WEIGHT_IS_OK(uint64_t x) {
+ return
+ x == CGROUP_WEIGHT_INVALID ||
+ (x >= CGROUP_WEIGHT_MIN && x <= CGROUP_WEIGHT_MAX);
+}
+
+/* IO limits on unified hierarchy */
+typedef enum CGroupIOLimitType {
+ CGROUP_IO_RBPS_MAX,
+ CGROUP_IO_WBPS_MAX,
+ CGROUP_IO_RIOPS_MAX,
+ CGROUP_IO_WIOPS_MAX,
+
+ _CGROUP_IO_LIMIT_TYPE_MAX,
+ _CGROUP_IO_LIMIT_TYPE_INVALID = -1
+} CGroupIOLimitType;
+
+extern const uint64_t cgroup_io_limit_defaults[_CGROUP_IO_LIMIT_TYPE_MAX];
+
+const char* cgroup_io_limit_type_to_string(CGroupIOLimitType t) _const_;
+CGroupIOLimitType cgroup_io_limit_type_from_string(const char *s) _pure_;
+
+/* Special values for the cpu.shares attribute */
+#define CGROUP_CPU_SHARES_INVALID ((uint64_t) -1)
+#define CGROUP_CPU_SHARES_MIN UINT64_C(2)
+#define CGROUP_CPU_SHARES_MAX UINT64_C(262144)
+#define CGROUP_CPU_SHARES_DEFAULT UINT64_C(1024)
+
+static inline bool CGROUP_CPU_SHARES_IS_OK(uint64_t x) {
+ return
+ x == CGROUP_CPU_SHARES_INVALID ||
+ (x >= CGROUP_CPU_SHARES_MIN && x <= CGROUP_CPU_SHARES_MAX);
+}
+
+/* Special values for the blkio.weight attribute */
+#define CGROUP_BLKIO_WEIGHT_INVALID ((uint64_t) -1)
+#define CGROUP_BLKIO_WEIGHT_MIN UINT64_C(10)
+#define CGROUP_BLKIO_WEIGHT_MAX UINT64_C(1000)
+#define CGROUP_BLKIO_WEIGHT_DEFAULT UINT64_C(500)
+
+static inline bool CGROUP_BLKIO_WEIGHT_IS_OK(uint64_t x) {
+ return
+ x == CGROUP_BLKIO_WEIGHT_INVALID ||
+ (x >= CGROUP_BLKIO_WEIGHT_MIN && x <= CGROUP_BLKIO_WEIGHT_MAX);
+}
+#endif // 0
+
+/* Default resource limits */
+#define DEFAULT_TASKS_MAX_PERCENTAGE 15U /* 15% of PIDs, 4915 on default settings */
+#define DEFAULT_USER_TASKS_MAX_PERCENTAGE 33U /* 33% of PIDs, 10813 on default settings */
+
+typedef enum CGroupUnified {
+ CGROUP_UNIFIED_UNKNOWN = -1,
+ CGROUP_UNIFIED_NONE = 0, /* Both systemd and controllers on legacy */
+ CGROUP_UNIFIED_SYSTEMD = 1, /* Only systemd on unified */
+ CGROUP_UNIFIED_ALL = 2, /* Both systemd and controllers on unified */
+} CGroupUnified;
+
/*
* General rules:
*
@@ -68,16 +144,26 @@ typedef enum CGroupMask {
int cg_enumerate_processes(const char *controller, const char *path, FILE **_f);
int cg_read_pid(FILE *f, pid_t *_pid);
+int cg_read_event(const char *controller, const char *path, const char *event,
+ char **val);
int cg_enumerate_subgroups(const char *controller, const char *path, DIR **_d);
int cg_read_subgroup(DIR *d, char **fn);
-int cg_kill(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, Set *s);
-int cg_kill_recursive(const char *controller, const char *path, int sig, bool sigcont, bool ignore_self, bool remove, Set *s);
+typedef enum CGroupFlags {
+ CGROUP_SIGCONT = 1,
+ CGROUP_IGNORE_SELF = 2,
+ CGROUP_REMOVE = 4,
+} CGroupFlags;
+
+typedef void (*cg_kill_log_func_t)(pid_t pid, int sig, void *userdata);
-int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self);
-int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool remove);
-int cg_migrate_recursive_fallback(const char *cfrom, const char *pfrom, const char *cto, const char *pto, bool ignore_self, bool rem);
+int cg_kill(const char *controller, const char *path, int sig, CGroupFlags flags, Set *s, cg_kill_log_func_t kill_log, void *userdata);
+int cg_kill_recursive(const char *controller, const char *path, int sig, CGroupFlags flags, Set *s, cg_kill_log_func_t kill_log, void *userdata);
+
+int cg_migrate(const char *cfrom, const char *pfrom, const char *cto, const char *pto, CGroupFlags flags);
+int cg_migrate_recursive(const char *cfrom, const char *pfrom, const char *cto, const char *pto, CGroupFlags flags);
+int cg_migrate_recursive_fallback(const char *cfrom, const char *pfrom, const char *cto, const char *pto, CGroupFlags flags);
int cg_split_spec(const char *spec, char **controller, char **path);
int cg_mangle_path(const char *path, char **result);
@@ -97,10 +183,16 @@ int cg_attach_fallback(const char *controller, const char *path, pid_t pid);
int cg_create_and_attach(const char *controller, const char *path, pid_t pid);
int cg_set_attribute(const char *controller, const char *path, const char *attribute, const char *value);
-// UNNEEDED int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret);
+int cg_get_attribute(const char *controller, const char *path, const char *attribute, char **ret);
+int cg_get_keyed_attribute(const char *controller, const char *path, const char *attribute, const char **keys, char **values);
+
+#if 0 /// UNNEEDED by elogind
+int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
+int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
-// UNNEEDED int cg_set_group_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
-// UNNEEDED int cg_set_task_access(const char *controller, const char *path, mode_t mode, uid_t uid, gid_t gid);
+int cg_set_xattr(const char *controller, const char *path, const char *name, const void *value, size_t size, int flags);
+int cg_get_xattr(const char *controller, const char *path, const char *name, void *value, size_t size);
+#endif // 0
int cg_install_release_agent(const char *controller, const char *agent);
int cg_uninstall_release_agent(const char *controller);
@@ -111,17 +203,20 @@ int cg_is_empty_recursive(const char *controller, const char *path);
int cg_get_root_path(char **path);
int cg_path_get_session(const char *path, char **session);
+#if 0 /// UNNEEDED by elogind
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_path_get_slice(const char *path, char **slice);
int cg_path_get_user_slice(const char *path, char **slice);
+#endif // 0
int cg_shift_path(const char *cgroup, const char *cached_root, const char **shifted);
int cg_pid_get_path_shifted(pid_t pid, const char *cached_root, char **cgroup);
int cg_pid_get_session(pid_t pid, char **session);
+#if 0 /// UNNEEDED by elogind
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);
@@ -130,32 +225,55 @@ int cg_pid_get_slice(pid_t pid, char **slice);
int cg_pid_get_user_slice(pid_t pid, char **slice);
int cg_path_decode_unit(const char *cgroup, char **unit);
+#endif // 0
char *cg_escape(const char *p);
char *cg_unescape(const char *p) _pure_;
bool cg_controller_is_valid(const char *p);
-// UNNEEDED int cg_slice_to_path(const char *unit, char **ret);
+#if 0 /// UNNEEDED by elogind
+int cg_slice_to_path(const char *unit, char **ret);
typedef const char* (*cg_migrate_callback_t)(CGroupMask mask, void *userdata);
-// UNNEEDED int cg_create_everywhere(CGroupMask supported, CGroupMask mask, const char *path);
+int cg_create_everywhere(CGroupMask supported, CGroupMask mask, const char *path);
int cg_attach_everywhere(CGroupMask supported, const char *path, pid_t pid, cg_migrate_callback_t callback, void *userdata);
-// UNNEEDED int cg_attach_many_everywhere(CGroupMask supported, const char *path, Set* pids, cg_migrate_callback_t callback, void *userdata);
-// UNNEEDED int cg_migrate_everywhere(CGroupMask supported, const char *from, const char *to, cg_migrate_callback_t callback, void *userdata);
-// UNNEEDED int cg_trim_everywhere(CGroupMask supported, const char *path, bool delete_root);
-// UNNEEDED int cg_enable_everywhere(CGroupMask supported, CGroupMask mask, const char *p);
+int cg_attach_many_everywhere(CGroupMask supported, const char *path, Set* pids, cg_migrate_callback_t callback, void *userdata);
+int cg_migrate_everywhere(CGroupMask supported, const char *from, const char *to, cg_migrate_callback_t callback, void *userdata);
+int cg_trim_everywhere(CGroupMask supported, const char *path, bool delete_root);
+int cg_enable_everywhere(CGroupMask supported, CGroupMask mask, const char *p);
+#endif // 0
int cg_mask_supported(CGroupMask *ret);
-// UNNEEDED int cg_kernel_controllers(Set *controllers);
+#if 0 /// UNNEEDED by elogind
+int cg_kernel_controllers(Set *controllers);
-int cg_unified(void);
-// UNNEEDED void cg_unified_flush(void);
+bool cg_ns_supported(void);
+#endif // 0
+
+int cg_all_unified(void);
+int cg_unified(const char *controller);
+#if 0 /// UNNEEDED by elogind
+void cg_unified_flush(void);
bool cg_is_unified_wanted(void);
-// UNNEEDED bool cg_is_legacy_wanted(void);
+#endif // 0
+bool cg_is_legacy_wanted(void);
+#if 0 /// UNNEEDED by elogind
+bool cg_is_unified_systemd_controller_wanted(void);
+bool cg_is_legacy_systemd_controller_wanted(void);
+#endif // 0
const char* cgroup_controller_to_string(CGroupController c) _const_;
CGroupController cgroup_controller_from_string(const char *s) _pure_;
+
+#if 0 /// UNNEEDED by elogind
+int cg_weight_parse(const char *s, uint64_t *ret);
+int cg_cpu_shares_parse(const char *s, uint64_t *ret);
+int cg_blkio_weight_parse(const char *s, uint64_t *ret);
+#endif // 0
+
+bool is_cgroup_fs(const struct statfs *s);
+bool fd_is_cgroup_fs(int fd);