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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2020 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;
unsigned int data_flags;
};
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;
#ifdef CTL_FREE_LIST
struct fd_data_head free_queue;
#endif
};
TAILQ_HEAD(fd_list_head, fd_list);
#define FD_LISTEN 0x01U
#define FD_UNPRIV 0x02U
#define FD_SENDLEN 0x04U
int control_start(struct dhcpcd_ctx *, const char *, sa_family_t);
int control_stop(struct dhcpcd_ctx *);
int control_open(const char *, sa_family_t, bool);
ssize_t control_send(struct dhcpcd_ctx *, int, char * const *);
struct fd_list *control_new(struct dhcpcd_ctx *, int, unsigned int);
void control_free(struct fd_list *);
void control_delete(struct fd_list *);
int control_queue(struct fd_list *, void *, size_t);
void control_recvdata(struct fd_list *fd, char *, size_t);
#endif
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