09e2465407
This makes sure that if we learn via inotify or another event source that a cgroup is empty, and we checked that this is indeed the case (as we might get spurious notifications through inotify, as the inotify logic through the "cgroups.event" is pretty unspecific and might be trigger for a variety of reasons), then we'll enqueue a defer event for it, at a priority lower than SIGCHLD handling, so that we know for sure that if there's waitid() data for a process we used it before considering the cgroup empty notification. Fixes: #6608
214 lines
6.6 KiB
C
214 lines
6.6 KiB
C
#pragma once
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <stdbool.h>
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#include "cgroup-util.h"
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#include "ip-address-access.h"
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#include "list.h"
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#include "time-util.h"
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typedef struct CGroupContext CGroupContext;
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typedef struct CGroupDeviceAllow CGroupDeviceAllow;
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typedef struct CGroupIODeviceWeight CGroupIODeviceWeight;
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typedef struct CGroupIODeviceLimit CGroupIODeviceLimit;
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typedef struct CGroupBlockIODeviceWeight CGroupBlockIODeviceWeight;
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typedef struct CGroupBlockIODeviceBandwidth CGroupBlockIODeviceBandwidth;
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typedef enum CGroupDevicePolicy {
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/* When devices listed, will allow those, plus built-in ones,
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if none are listed will allow everything. */
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CGROUP_AUTO,
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/* Everything forbidden, except built-in ones and listed ones. */
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CGROUP_CLOSED,
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/* Everythings forbidden, except for the listed devices */
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CGROUP_STRICT,
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_CGROUP_DEVICE_POLICY_MAX,
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_CGROUP_DEVICE_POLICY_INVALID = -1
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} CGroupDevicePolicy;
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struct CGroupDeviceAllow {
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LIST_FIELDS(CGroupDeviceAllow, device_allow);
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char *path;
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bool r:1;
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bool w:1;
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bool m:1;
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};
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struct CGroupIODeviceWeight {
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LIST_FIELDS(CGroupIODeviceWeight, device_weights);
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char *path;
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uint64_t weight;
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};
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struct CGroupIODeviceLimit {
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LIST_FIELDS(CGroupIODeviceLimit, device_limits);
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char *path;
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uint64_t limits[_CGROUP_IO_LIMIT_TYPE_MAX];
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};
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struct CGroupBlockIODeviceWeight {
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LIST_FIELDS(CGroupBlockIODeviceWeight, device_weights);
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char *path;
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uint64_t weight;
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};
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struct CGroupBlockIODeviceBandwidth {
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LIST_FIELDS(CGroupBlockIODeviceBandwidth, device_bandwidths);
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char *path;
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uint64_t rbps;
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uint64_t wbps;
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};
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struct CGroupContext {
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bool cpu_accounting;
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bool io_accounting;
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bool blockio_accounting;
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bool memory_accounting;
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bool tasks_accounting;
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bool ip_accounting;
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/* For unified hierarchy */
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uint64_t cpu_weight;
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uint64_t startup_cpu_weight;
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usec_t cpu_quota_per_sec_usec;
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uint64_t io_weight;
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uint64_t startup_io_weight;
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LIST_HEAD(CGroupIODeviceWeight, io_device_weights);
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LIST_HEAD(CGroupIODeviceLimit, io_device_limits);
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uint64_t memory_low;
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uint64_t memory_high;
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uint64_t memory_max;
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uint64_t memory_swap_max;
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LIST_HEAD(IPAddressAccessItem, ip_address_allow);
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LIST_HEAD(IPAddressAccessItem, ip_address_deny);
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/* For legacy hierarchies */
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uint64_t cpu_shares;
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uint64_t startup_cpu_shares;
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uint64_t blockio_weight;
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uint64_t startup_blockio_weight;
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LIST_HEAD(CGroupBlockIODeviceWeight, blockio_device_weights);
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LIST_HEAD(CGroupBlockIODeviceBandwidth, blockio_device_bandwidths);
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uint64_t memory_limit;
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CGroupDevicePolicy device_policy;
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LIST_HEAD(CGroupDeviceAllow, device_allow);
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/* Common */
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uint64_t tasks_max;
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bool delegate;
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};
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/* Used when querying IP accounting data */
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typedef enum CGroupIPAccountingMetric {
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CGROUP_IP_INGRESS_BYTES,
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CGROUP_IP_INGRESS_PACKETS,
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CGROUP_IP_EGRESS_BYTES,
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CGROUP_IP_EGRESS_PACKETS,
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_CGROUP_IP_ACCOUNTING_METRIC_MAX,
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_CGROUP_IP_ACCOUNTING_METRIC_INVALID = -1,
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} CGroupIPAccountingMetric;
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#include "unit.h"
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void cgroup_context_init(CGroupContext *c);
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void cgroup_context_done(CGroupContext *c);
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void cgroup_context_dump(CGroupContext *c, FILE* f, const char *prefix);
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CGroupMask cgroup_context_get_mask(CGroupContext *c);
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void cgroup_context_free_device_allow(CGroupContext *c, CGroupDeviceAllow *a);
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void cgroup_context_free_io_device_weight(CGroupContext *c, CGroupIODeviceWeight *w);
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void cgroup_context_free_io_device_limit(CGroupContext *c, CGroupIODeviceLimit *l);
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void cgroup_context_free_blockio_device_weight(CGroupContext *c, CGroupBlockIODeviceWeight *w);
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void cgroup_context_free_blockio_device_bandwidth(CGroupContext *c, CGroupBlockIODeviceBandwidth *b);
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CGroupMask unit_get_own_mask(Unit *u);
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CGroupMask unit_get_siblings_mask(Unit *u);
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CGroupMask unit_get_members_mask(Unit *u);
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CGroupMask unit_get_subtree_mask(Unit *u);
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CGroupMask unit_get_target_mask(Unit *u);
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CGroupMask unit_get_enable_mask(Unit *u);
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bool unit_get_needs_bpf(Unit *u);
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void unit_update_cgroup_members_masks(Unit *u);
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char *unit_default_cgroup_path(Unit *u);
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int unit_set_cgroup_path(Unit *u, const char *path);
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int unit_realize_cgroup(Unit *u);
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void unit_release_cgroup(Unit *u);
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void unit_prune_cgroup(Unit *u);
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int unit_watch_cgroup(Unit *u);
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void unit_add_to_cgroup_empty_queue(Unit *u);
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int unit_attach_pids_to_cgroup(Unit *u);
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int manager_setup_cgroup(Manager *m);
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void manager_shutdown_cgroup(Manager *m, bool delete);
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unsigned manager_dispatch_cgroup_realize_queue(Manager *m);
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Unit *manager_get_unit_by_cgroup(Manager *m, const char *cgroup);
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Unit *manager_get_unit_by_pid_cgroup(Manager *m, pid_t pid);
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Unit* manager_get_unit_by_pid(Manager *m, pid_t pid);
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int unit_search_main_pid(Unit *u, pid_t *ret);
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int unit_watch_all_pids(Unit *u);
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int unit_get_memory_current(Unit *u, uint64_t *ret);
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int unit_get_tasks_current(Unit *u, uint64_t *ret);
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int unit_get_cpu_usage(Unit *u, nsec_t *ret);
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int unit_get_ip_accounting(Unit *u, CGroupIPAccountingMetric metric, uint64_t *ret);
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int unit_reset_cpu_accounting(Unit *u);
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int unit_reset_ip_accounting(Unit *u);
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#define UNIT_CGROUP_BOOL(u, name) \
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({ \
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CGroupContext *cc = unit_get_cgroup_context(u); \
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cc ? cc->name : false; \
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})
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int manager_notify_cgroup_empty(Manager *m, const char *group);
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void unit_invalidate_cgroup(Unit *u, CGroupMask m);
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void unit_invalidate_cgroup_bpf(Unit *u);
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void manager_invalidate_startup_units(Manager *m);
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const char* cgroup_device_policy_to_string(CGroupDevicePolicy i) _const_;
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CGroupDevicePolicy cgroup_device_policy_from_string(const char *s) _pure_;
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