Systemd/src/condition.h
Kay Sievers 2b583ce657 use /run instead of /dev/.run
Instead of the /dev/.run trick we have currently implemented, we decided
to move the early-boot runtime dir to /run.

An existing /var/run directory is bind-mounted to /run. If /var/run is
already a symlink, no action is taken.

An existing /var/lock directory is bind-mounted to /run/lock.
If /var/lock is already a symlink, no action is taken.

To implement the directory vs. symlink logic, we have a:
  ConditionPathIsDirectory=
now, which is used in the mount units.

Skipped mount unit in case of symlink:
  $ systemctl status var-run.mount
  var-run.mount - Runtime Directory
    Loaded: loaded (/lib/systemd/system/var-run.mount)
    Active: inactive (dead)
            start condition failed at Fri, 25 Mar 2011 04:51:41 +0100; 6min ago
     Where: /var/run
      What: /run
    CGroup: name=systemd:/system/var-run.mount

The systemd rpm needs to make sure to add something like:
  %pre
  mkdir -p -m0755 /run >/dev/null 2>&1 || :
or it needs to be added to filesystem.rpm.

Udev -git already uses /run if that exists, and is writable at bootup.
Otherwise it falls back to the current /dev/.udev.

Dracut and plymouth need to be adopted to switch from /dev/.run to run
too.

Cheers,
Kay
2011-03-28 23:00:00 +02:00

64 lines
1.8 KiB
C

/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
#ifndef fooconditionhfoo
#define fooconditionhfoo
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <stdbool.h>
#include "list.h"
typedef enum ConditionType {
CONDITION_PATH_EXISTS,
CONDITION_PATH_IS_DIRECTORY,
CONDITION_DIRECTORY_NOT_EMPTY,
CONDITION_KERNEL_COMMAND_LINE,
CONDITION_VIRTUALIZATION,
CONDITION_NULL,
_CONDITION_TYPE_MAX,
_CONDITION_TYPE_INVALID = -1
} ConditionType;
typedef struct Condition {
ConditionType type;
char *parameter;
bool trigger:1;
bool negate:1;
LIST_FIELDS(struct Condition, conditions);
} Condition;
Condition* condition_new(ConditionType type, const char *parameter, bool trigger, bool negate);
void condition_free(Condition *c);
void condition_free_list(Condition *c);
bool condition_test(Condition *c);
bool condition_test_list(Condition *c);
void condition_dump(Condition *c, FILE *f, const char *prefix);
void condition_dump_list(Condition *c, FILE *f, const char *prefix);
const char* condition_type_to_string(ConditionType t);
int condition_type_from_string(const char *s);
#endif