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-rw-r--r--src/core/cgroup.h221
1 files changed, 221 insertions, 0 deletions
diff --git a/src/core/cgroup.h b/src/core/cgroup.h
new file mode 100644
index 0000000..266daa2
--- /dev/null
+++ b/src/core/cgroup.h
@@ -0,0 +1,221 @@
+/* SPDX-License-Identifier: LGPL-2.1+ */
+#pragma once
+
+#include <stdbool.h>
+
+#include "cgroup-util.h"
+#include "ip-address-access.h"
+#include "list.h"
+#include "time-util.h"
+
+typedef struct CGroupContext CGroupContext;
+typedef struct CGroupDeviceAllow CGroupDeviceAllow;
+typedef struct CGroupIODeviceWeight CGroupIODeviceWeight;
+typedef struct CGroupIODeviceLimit CGroupIODeviceLimit;
+typedef struct CGroupIODeviceLatency CGroupIODeviceLatency;
+typedef struct CGroupBlockIODeviceWeight CGroupBlockIODeviceWeight;
+typedef struct CGroupBlockIODeviceBandwidth CGroupBlockIODeviceBandwidth;
+
+typedef enum CGroupDevicePolicy {
+
+ /* When devices listed, will allow those, plus built-in ones,
+ if none are listed will allow everything. */
+ CGROUP_AUTO,
+
+ /* Everything forbidden, except built-in ones and listed ones. */
+ CGROUP_CLOSED,
+
+ /* Everythings forbidden, except for the listed devices */
+ CGROUP_STRICT,
+
+ _CGROUP_DEVICE_POLICY_MAX,
+ _CGROUP_DEVICE_POLICY_INVALID = -1
+} CGroupDevicePolicy;
+
+struct CGroupDeviceAllow {
+ LIST_FIELDS(CGroupDeviceAllow, device_allow);
+ char *path;
+ bool r:1;
+ bool w:1;
+ bool m:1;
+};
+
+struct CGroupIODeviceWeight {
+ LIST_FIELDS(CGroupIODeviceWeight, device_weights);
+ char *path;
+ uint64_t weight;
+};
+
+struct CGroupIODeviceLimit {
+ LIST_FIELDS(CGroupIODeviceLimit, device_limits);
+ char *path;
+ uint64_t limits[_CGROUP_IO_LIMIT_TYPE_MAX];
+};
+
+struct CGroupIODeviceLatency {
+ LIST_FIELDS(CGroupIODeviceLatency, device_latencies);
+ char *path;
+ usec_t target_usec;
+};
+
+struct CGroupBlockIODeviceWeight {
+ LIST_FIELDS(CGroupBlockIODeviceWeight, device_weights);
+ char *path;
+ uint64_t weight;
+};
+
+struct CGroupBlockIODeviceBandwidth {
+ LIST_FIELDS(CGroupBlockIODeviceBandwidth, device_bandwidths);
+ char *path;
+ uint64_t rbps;
+ uint64_t wbps;
+};
+
+struct CGroupContext {
+ bool cpu_accounting;
+ bool io_accounting;
+ bool blockio_accounting;
+ bool memory_accounting;
+ bool tasks_accounting;
+ bool ip_accounting;
+
+ /* For unified hierarchy */
+ uint64_t cpu_weight;
+ uint64_t startup_cpu_weight;
+ usec_t cpu_quota_per_sec_usec;
+
+ uint64_t io_weight;
+ uint64_t startup_io_weight;
+ LIST_HEAD(CGroupIODeviceWeight, io_device_weights);
+ LIST_HEAD(CGroupIODeviceLimit, io_device_limits);
+ LIST_HEAD(CGroupIODeviceLatency, io_device_latencies);
+
+ uint64_t memory_min;
+ uint64_t memory_low;
+ uint64_t memory_high;
+ uint64_t memory_max;
+ uint64_t memory_swap_max;
+
+ LIST_HEAD(IPAddressAccessItem, ip_address_allow);
+ LIST_HEAD(IPAddressAccessItem, ip_address_deny);
+
+ /* For legacy hierarchies */
+ uint64_t cpu_shares;
+ uint64_t startup_cpu_shares;
+
+ uint64_t blockio_weight;
+ uint64_t startup_blockio_weight;
+ LIST_HEAD(CGroupBlockIODeviceWeight, blockio_device_weights);
+ LIST_HEAD(CGroupBlockIODeviceBandwidth, blockio_device_bandwidths);
+
+ uint64_t memory_limit;
+
+ CGroupDevicePolicy device_policy;
+ LIST_HEAD(CGroupDeviceAllow, device_allow);
+
+ /* Common */
+ uint64_t tasks_max;
+
+ bool delegate;
+ CGroupMask delegate_controllers;
+
+ CGroupMask disable_controllers;
+};
+
+/* Used when querying IP accounting data */
+typedef enum CGroupIPAccountingMetric {
+ CGROUP_IP_INGRESS_BYTES,
+ CGROUP_IP_INGRESS_PACKETS,
+ CGROUP_IP_EGRESS_BYTES,
+ CGROUP_IP_EGRESS_PACKETS,
+ _CGROUP_IP_ACCOUNTING_METRIC_MAX,
+ _CGROUP_IP_ACCOUNTING_METRIC_INVALID = -1,
+} CGroupIPAccountingMetric;
+
+typedef struct Unit Unit;
+typedef struct Manager Manager;
+
+void cgroup_context_init(CGroupContext *c);
+void cgroup_context_done(CGroupContext *c);
+void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix);
+
+void cgroup_context_free_device_allow(CGroupContext *c, CGroupDeviceAllow *a);
+void cgroup_context_free_io_device_weight(CGroupContext *c, CGroupIODeviceWeight *w);
+void cgroup_context_free_io_device_limit(CGroupContext *c, CGroupIODeviceLimit *l);
+void cgroup_context_free_io_device_latency(CGroupContext *c, CGroupIODeviceLatency *l);
+void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w);
+void cgroup_context_free_blockio_device_bandwidth(CGroupContext *c, CGroupBlockIODeviceBandwidth *b);
+
+int cgroup_add_device_allow(CGroupContext *c, const char *dev, const char *mode);
+
+CGroupMask unit_get_own_mask(Unit *u);
+CGroupMask unit_get_delegate_mask(Unit *u);
+CGroupMask unit_get_members_mask(Unit *u);
+CGroupMask unit_get_siblings_mask(Unit *u);
+CGroupMask unit_get_subtree_mask(Unit *u);
+CGroupMask unit_get_disable_mask(Unit *u);
+CGroupMask unit_get_ancestor_disable_mask(Unit *u);
+
+CGroupMask unit_get_target_mask(Unit *u);
+CGroupMask unit_get_enable_mask(Unit *u);
+
+void unit_invalidate_cgroup_members_masks(Unit *u);
+
+void unit_add_to_cgroup_realize_queue(Unit *u);
+
+const char *unit_get_realized_cgroup_path(Unit *u, CGroupMask mask);
+char *unit_default_cgroup_path(const Unit *u);
+int unit_set_cgroup_path(Unit *u, const char *path);
+int unit_pick_cgroup_path(Unit *u);
+
+int unit_realize_cgroup(Unit *u);
+void unit_release_cgroup(Unit *u);
+void unit_prune_cgroup(Unit *u);
+int unit_watch_cgroup(Unit *u);
+
+void unit_add_to_cgroup_empty_queue(Unit *u);
+
+int unit_attach_pids_to_cgroup(Unit *u, Set *pids, const char *suffix_path);
+
+int manager_setup_cgroup(Manager *m);
+void manager_shutdown_cgroup(Manager *m, bool delete);
+
+unsigned manager_dispatch_cgroup_realize_queue(Manager *m);
+
+Unit *manager_get_unit_by_cgroup(Manager *m, const char *cgroup);
+Unit *manager_get_unit_by_pid_cgroup(Manager *m, pid_t pid);
+Unit* manager_get_unit_by_pid(Manager *m, pid_t pid);
+
+int unit_search_main_pid(Unit *u, pid_t *ret);
+int unit_watch_all_pids(Unit *u);
+
+int unit_synthesize_cgroup_empty_event(Unit *u);
+
+int unit_get_memory_current(Unit *u, uint64_t *ret);
+int unit_get_tasks_current(Unit *u, uint64_t *ret);
+int unit_get_cpu_usage(Unit *u, nsec_t *ret);
+int unit_get_ip_accounting(Unit *u, CGroupIPAccountingMetric metric, uint64_t *ret);
+
+int unit_reset_cpu_accounting(Unit *u);
+int unit_reset_ip_accounting(Unit *u);
+
+#define UNIT_CGROUP_BOOL(u, name) \
+ ({ \
+ CGroupContext *cc = unit_get_cgroup_context(u); \
+ cc ? cc->name : false; \
+ })
+
+bool manager_owns_host_root_cgroup(Manager *m);
+bool unit_has_host_root_cgroup(Unit *u);
+
+int manager_notify_cgroup_empty(Manager *m, const char *group);
+
+void unit_invalidate_cgroup(Unit *u, CGroupMask m);
+void unit_invalidate_cgroup_bpf(Unit *u);
+
+void manager_invalidate_startup_units(Manager *m);
+
+const char* cgroup_device_policy_to_string(CGroupDevicePolicy i) _const_;
+CGroupDevicePolicy cgroup_device_policy_from_string(const char *s) _pure_;
+
+bool unit_cgroup_delegate(Unit *u);