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contrib/dhcpcd/src/control.h
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/* SPDX-License-Identifier: BSD-2-Clause */ | |||||
/* | |||||
* dhcpcd - DHCP client daemon | |||||
* Copyright (c) 2006-2019 Roy Marples <roy@marples.name> | |||||
* All rights reserved | |||||
* 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. | |||||
*/ | |||||
#ifndef CONTROL_H | |||||
#define CONTROL_H | |||||
#include <stdbool.h> | |||||
#include "dhcpcd.h" | |||||
#if !defined(CTL_FREE_LIST) | |||||
#define CTL_FREE_LIST 1 | |||||
#elif CTL_FREE_LIST == 0 | |||||
#undef CTL_FREE_LIST | |||||
#endif | |||||
/* Limit queue size per fd */ | |||||
#define CONTROL_QUEUE_MAX 100 | |||||
struct fd_data { | |||||
TAILQ_ENTRY(fd_data) next; | |||||
void *data; | |||||
size_t data_size; | |||||
size_t data_len; | |||||
}; | |||||
TAILQ_HEAD(fd_data_head, fd_data); | |||||
struct fd_list { | |||||
TAILQ_ENTRY(fd_list) next; | |||||
struct dhcpcd_ctx *ctx; | |||||
int fd; | |||||
unsigned int flags; | |||||
struct fd_data_head queue; | |||||
size_t queue_len; | |||||
#ifdef CTL_FREE_LIST | |||||
struct fd_data_head free_queue; | |||||
#endif | |||||
}; | |||||
TAILQ_HEAD(fd_list_head, fd_list); | |||||
#define FD_LISTEN (1<<0) | |||||
#define FD_UNPRIV (1<<1) | |||||
int control_start(struct dhcpcd_ctx *, const char *); | |||||
int control_stop(struct dhcpcd_ctx *); | |||||
int control_open(const char *); | |||||
ssize_t control_send(struct dhcpcd_ctx *, int, char * const *); | |||||
int control_queue(struct fd_list *, void *, size_t, bool); | |||||
void control_close(struct dhcpcd_ctx *ctx); | |||||
#endif |