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=).
128 lines
3.5 KiB
C
128 lines
3.5 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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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 Mount Mount;
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#include "unit.h"
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#include "kill.h"
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#include "execute.h"
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#include "cgroup.h"
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typedef enum MountState {
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MOUNT_DEAD,
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MOUNT_MOUNTING, /* /bin/mount is running, but the mount is not done yet. */
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MOUNT_MOUNTING_DONE, /* /bin/mount is running, and the mount is done. */
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MOUNT_MOUNTED,
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MOUNT_REMOUNTING,
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MOUNT_UNMOUNTING,
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MOUNT_MOUNTING_SIGTERM,
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MOUNT_MOUNTING_SIGKILL,
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MOUNT_REMOUNTING_SIGTERM,
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MOUNT_REMOUNTING_SIGKILL,
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MOUNT_UNMOUNTING_SIGTERM,
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MOUNT_UNMOUNTING_SIGKILL,
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MOUNT_FAILED,
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_MOUNT_STATE_MAX,
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_MOUNT_STATE_INVALID = -1
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} MountState;
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typedef enum MountExecCommand {
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MOUNT_EXEC_MOUNT,
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MOUNT_EXEC_UNMOUNT,
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MOUNT_EXEC_REMOUNT,
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_MOUNT_EXEC_COMMAND_MAX,
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_MOUNT_EXEC_COMMAND_INVALID = -1
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} MountExecCommand;
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typedef struct MountParameters {
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char *what;
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char *options;
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char *fstype;
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int passno;
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} MountParameters;
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typedef enum MountResult {
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MOUNT_SUCCESS,
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MOUNT_FAILURE_RESOURCES,
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MOUNT_FAILURE_TIMEOUT,
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MOUNT_FAILURE_EXIT_CODE,
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MOUNT_FAILURE_SIGNAL,
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MOUNT_FAILURE_CORE_DUMP,
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_MOUNT_RESULT_MAX,
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_MOUNT_RESULT_INVALID = -1
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} MountResult;
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struct Mount {
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Unit meta;
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char *where;
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MountParameters parameters_proc_self_mountinfo;
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MountParameters parameters_fragment;
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bool from_proc_self_mountinfo:1;
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bool from_fragment:1;
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/* Used while looking for mount points that vanished or got
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* added from/to /proc/self/mountinfo */
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bool is_mounted:1;
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bool just_mounted:1;
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bool just_changed:1;
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MountResult result;
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MountResult reload_result;
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mode_t directory_mode;
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usec_t timeout_usec;
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ExecCommand exec_command[_MOUNT_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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MountState state, deserialized_state;
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ExecCommand* control_command;
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MountExecCommand control_command_id;
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pid_t control_pid;
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Watch timer_watch;
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};
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extern const UnitVTable mount_vtable;
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void mount_fd_event(Manager *m, int events);
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const char* mount_state_to_string(MountState i) _const_;
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MountState mount_state_from_string(const char *s) _pure_;
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const char* mount_exec_command_to_string(MountExecCommand i) _const_;
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MountExecCommand mount_exec_command_from_string(const char *s) _pure_;
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const char* mount_result_to_string(MountResult i) _const_;
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MountResult mount_result_from_string(const char *s) _pure_;
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void warn_if_dir_nonempty(const char *unit, const char* where);
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