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072993504e
Let's move the enforcement of the per-unit start limit from unit.c into the
type-specific files again. For unit types that know a concept of "result" codes
this allows us to hook up the start limit condition to it with an explicit
result code. Also, this makes sure that the state checks in clal like
service_start() may be done before the start limit is checked, as the start
limit really should be checked last, right before everything has been verified
to be in order.
The generic start limit logic is left in unit.c, but the invocation of it is
moved into the per-type files, in the various xyz_start() functions, so that
they may place the check at the right location.
Note that this change drops the enforcement entirely from device, slice, target
and scope units, since these unit types generally may not fail activation, or
may only be activated a single time. This is also documented now.
Note that restores the "start-limit-hit" result code that existed before
6bf0f408e4 already in the service code. However,
it's not introduced for all units that have a result code concept.
Fixes #3166.
109 lines
2.8 KiB
C
109 lines
2.8 KiB
C
#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 "execute.h"
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#include "kill.h"
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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 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_FAILURE_START_LIMIT_HIT,
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_MOUNT_RESULT_MAX,
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_MOUNT_RESULT_INVALID = -1
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} MountResult;
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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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} MountParameters;
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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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bool reset_cpu_usage:1;
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bool sloppy_options;
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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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ExecRuntime *exec_runtime;
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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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sd_event_source *timer_event_source;
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unsigned n_retry_umount;
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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_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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