50f48ad37a
Support for net_cls.class_id through the NetClass= configuration directive has been added in v227 in preparation for a per-unit packet filter mechanism. However, it turns out the kernel people have decided to deprecate the net_cls and net_prio controllers in v2. Tejun provides a comprehensive justification for this in his commit, which has landed during the merge window for kernel v4.5: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=bd1060a1d671 As we're aiming for full support for the v2 cgroup hierarchy, we can no longer support this feature. Userspace tool such as nftables are moving over to setting rules that are specific to the full cgroup path of a task, which obsoletes these controllers anyway. This commit removes support for tweaking details in the net_cls controller, but keeps the NetClass= directive around for legacy compatibility reasons.
156 lines
4.7 KiB
C
156 lines
4.7 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 "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 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 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 bandwidth;
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bool read;
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};
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struct CGroupContext {
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bool cpu_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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uint64_t cpu_shares;
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uint64_t startup_cpu_shares;
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usec_t cpu_quota_per_sec_usec;
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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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uint64_t tasks_max;
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bool delegate;
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};
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#include "cgroup-util.h"
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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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void cgroup_context_apply(CGroupContext *c, CGroupMask mask, const char *path, ManagerState state);
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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_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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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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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_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_reset_cpu_usage(Unit *u);
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bool unit_cgroup_delegate(Unit *u);
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int unit_notify_cgroup_empty(Unit *u);
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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 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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