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dhcpcd/dev.h

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Add udev support for interface arrival and departure. This is because udev likes to rename the interface, which it can't do if dhcpcd grabs it first.
2013-09-10 00:14:06 +08:00
/*
* dhcpcd - DHCP client daemon
Changed these files in 2014.
2014-02-04 22:55:04 +08:00
* Copyright (c) 2006-2014 Roy Marples <roy@marples.name>
Add udev support for interface arrival and departure. This is because udev likes to rename the interface, which it can't do if dhcpcd grabs it first.
2013-09-10 00:14:06 +08:00
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
#ifndef DEV_H
#define DEV_H
Add udev support for interface arrival and departure. This is because udev likes to rename the interface, which it can't do if dhcpcd grabs it first.
2013-09-10 00:14:06 +08:00
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
// dev plugin setup
struct dev {
const char *name;
Support older udev versions where we need to rely on udev-settle.
2013-09-13 00:46:41 +08:00
int (*initialized)(const char *);
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
int (*listening)(void);
Move all global variables into contexts, with a small exception for signal handling. This allows dhcpcd to work better in a threaded environment such as rtems.
2014-02-12 08:39:46 +08:00
int (*handle_device)(void *);
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
int (*start)(void);
void (*stop)(void);
};
Dev module start now returns an fd to monitor so the eloop additions can go into dev.c Create a new struct to pass dhcpcd handle_interface to dev plugins This allows us to build the dhcpcd binary normally and save a few k disk space.
2013-09-13 05:13:41 +08:00
struct dev_dhcpcd {
Fix dev warning.
2014-05-25 04:11:42 +08:00
int (*handle_interface)(void *, int, const char *);
Dev module start now returns an fd to monitor so the eloop additions can go into dev.c Create a new struct to pass dhcpcd handle_interface to dev plugins This allows us to build the dhcpcd binary normally and save a few k disk space.
2013-09-13 05:13:41 +08:00
};
int dev_init(struct dev *, const struct dev_dhcpcd *);
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
// hooks for dhcpcd
#ifdef PLUGIN_DEV
Move all global variables into contexts, with a small exception for signal handling. This allows dhcpcd to work better in a threaded environment such as rtems.
2014-02-12 08:39:46 +08:00
#include "dhcpcd.h"
int dev_initialized(struct dhcpcd_ctx *, const char *);
int dev_listening(struct dhcpcd_ctx *);
int dev_start(struct dhcpcd_ctx *);
Improve the dev API a little.
2014-10-04 16:26:15 +08:00
void dev_stop(struct dhcpcd_ctx *);
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
#else
Fix some possible pointer checks.
2014-02-27 19:57:45 +08:00
#define dev_initialized(a, b) (1)
#define dev_listening(a) (0)
Fix building with a dev manager
2013-09-13 01:08:34 +08:00
#define dev_start(a) {}
Fix compile on BSD.
2014-10-04 18:19:00 +08:00
#define dev_stop(a) {}
Instead of linking directly to libudev, create a plugin system for /dev management. This allows dhcpcd to work even if udev removed and adds the ability to change from udev to something else in the future.
2013-09-12 23:43:20 +08:00
#endif
Add udev support for interface arrival and departure. This is because udev likes to rename the interface, which it can't do if dhcpcd grabs it first.
2013-09-10 00:14:06 +08:00
#endif
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