4ad490007b
Replace the very generic cgroup hookup with a much simpler one. With this change only the high-level cgroup settings remain, the ability to set arbitrary cgroup attributes is removed, so is support for adding units to arbitrary cgroup controllers or setting arbitrary paths for them (especially paths that are different for the various controllers). This also introduces a new -.slice root slice, that is the parent of system.slice and friends. This enables easy admin configuration of root-level cgrouo properties. This replaces DeviceDeny= by DevicePolicy=, and implicitly adds in /dev/null, /dev/zero and friends if DeviceAllow= is used (unless this is turned off by DevicePolicy=).
123 lines
3.3 KiB
C
123 lines
3.3 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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Copyright 2010 Maarten Lankhorst
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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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typedef struct Swap Swap;
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#include "unit.h"
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typedef enum SwapState {
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SWAP_DEAD,
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SWAP_ACTIVATING,
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SWAP_ACTIVE,
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SWAP_DEACTIVATING,
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SWAP_ACTIVATING_SIGTERM,
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SWAP_ACTIVATING_SIGKILL,
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SWAP_DEACTIVATING_SIGTERM,
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SWAP_DEACTIVATING_SIGKILL,
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SWAP_FAILED,
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_SWAP_STATE_MAX,
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_SWAP_STATE_INVALID = -1
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} SwapState;
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typedef enum SwapExecCommand {
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SWAP_EXEC_ACTIVATE,
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SWAP_EXEC_DEACTIVATE,
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_SWAP_EXEC_COMMAND_MAX,
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_SWAP_EXEC_COMMAND_INVALID = -1
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} SwapExecCommand;
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typedef struct SwapParameters {
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char *what;
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int priority;
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bool noauto:1;
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bool nofail:1;
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} SwapParameters;
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typedef enum SwapResult {
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SWAP_SUCCESS,
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SWAP_FAILURE_RESOURCES,
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SWAP_FAILURE_TIMEOUT,
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SWAP_FAILURE_EXIT_CODE,
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SWAP_FAILURE_SIGNAL,
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SWAP_FAILURE_CORE_DUMP,
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_SWAP_RESULT_MAX,
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_SWAP_RESULT_INVALID = -1
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} SwapResult;
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struct Swap {
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Unit meta;
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char *what;
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SwapParameters parameters_proc_swaps;
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SwapParameters parameters_fragment;
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bool from_proc_swaps:1;
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bool from_fragment:1;
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/* Used while looking for swaps that vanished or got added
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* from/to /proc/swaps */
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bool is_active:1;
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bool just_activated:1;
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SwapResult result;
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usec_t timeout_usec;
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ExecCommand exec_command[_SWAP_EXEC_COMMAND_MAX];
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ExecContext exec_context;
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KillContext kill_context;
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CGroupContext cgroup_context;
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SwapState state, deserialized_state;
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ExecCommand* control_command;
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SwapExecCommand control_command_id;
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pid_t control_pid;
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Watch timer_watch;
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/* In order to be able to distinguish dependencies on
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different device nodes we might end up creating multiple
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devices for the same swap. We chain them up here. */
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LIST_FIELDS(struct Swap, same_proc_swaps);
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};
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extern const UnitVTable swap_vtable;
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int swap_add_one_mount_link(Swap *s, Mount *m);
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int swap_dispatch_reload(Manager *m);
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int swap_fd_event(Manager *m, int events);
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const char* swap_state_to_string(SwapState i) _const_;
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SwapState swap_state_from_string(const char *s) _pure_;
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const char* swap_exec_command_to_string(SwapExecCommand i) _const_;
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SwapExecCommand swap_exec_command_from_string(const char *s) _pure_;
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const char* swap_result_to_string(SwapResult i) _const_;
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SwapResult swap_result_from_string(const char *s) _pure_;
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