1 /* 2 * dhcpcd - DHCP client daemon 3 * Copyright (c) 2006-2015 Roy Marples <roy@marples.name> 4 * All rights reserved 5 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #ifndef CONTROL_H 29 #define CONTROL_H 30 31 #include "dhcpcd.h" 32 33 /* Limit queue size per fd */ 34 #define CONTROL_QUEUE_MAX 100 35 36 struct fd_data { 37 TAILQ_ENTRY(fd_data) next; 38 char *data; 39 size_t data_len; 40 uint8_t freeit; 41 }; 42 TAILQ_HEAD(fd_data_head, fd_data); 43 44 struct fd_list { 45 TAILQ_ENTRY(fd_list) next; 46 struct dhcpcd_ctx *ctx; 47 int fd; 48 unsigned int flags; 49 struct fd_data_head queue; 50 struct fd_data_head free_queue; 51 }; 52 TAILQ_HEAD(fd_list_head, fd_list); 53 54 #define FD_LISTEN (1<<0) 55 #define FD_UNPRIV (1<<1) 56 57 int control_start(struct dhcpcd_ctx *, const char *); 58 int control_stop(struct dhcpcd_ctx *); 59 int control_open(struct dhcpcd_ctx *, const char *); 60 ssize_t control_send(struct dhcpcd_ctx *, int, char * const *); 61 int control_queue(struct fd_list *fd, char *data, size_t data_len, uint8_t fit); 62 void control_close(struct dhcpcd_ctx *ctx); 63 64 #endif 65