1 /* 2 * dhcpcd - DHCP client daemon 3 * Copyright (c) 2006-2009 Roy Marples <roy (at) 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 COMMON_H 29 #define COMMON_H 30 31 #include <stdio.h> 32 #include <time.h> 33 34 #include "config.h" 35 #include "defs.h" 36 37 #define UNCONST(a) ((void *)(unsigned long)(const void *)(a)) 38 39 #define timeval_to_double(tv) ((tv)->tv_sec * 1.0 + (tv)->tv_usec * 1.0e-6) 40 #define timernorm(tvp) \ 41 do { \ 42 while ((tvp)->tv_usec >= 1000000) { \ 43 (tvp)->tv_sec++; \ 44 (tvp)->tv_usec -= 1000000; \ 45 } \ 46 } while (0 /* CONSTCOND */); 47 48 #if __GNUC__ > 2 || defined(__INTEL_COMPILER) 49 # define _noreturn __attribute__((__noreturn__)) 50 # define _packed __attribute__((__packed__)) 51 # define _unused __attribute__((__unused__)) 52 #else 53 # define _noreturn 54 # define _packed 55 # define _unused 56 #endif 57 58 /* We don't really need this as our supported systems define __restrict 59 * automatically for us, but it is here for completeness. */ 60 #ifndef __restrict 61 # if defined(__lint__) 62 # define __restrict 63 # elif __STDC_VERSION__ >= 199901L 64 # define __restrict restrict 65 # elif !(2 < __GNUC__ || (2 == __GNU_C && 95 <= __GNUC_VERSION__)) 66 # define __restrict 67 # endif 68 #endif 69 70 int set_cloexec(int); 71 int set_nonblock(int); 72 char *get_line(FILE * __restrict); 73 extern int clock_monotonic; 74 int get_monotonic(struct timeval *); 75 time_t uptime(void); 76 int writepid(int, pid_t); 77 void *xrealloc(void *, size_t); 78 void *xmalloc(size_t); 79 void *xzalloc(size_t); 80 char *xstrdup(const char *); 81 82 #endif 83
