| /* |
| * dhcpcd - DHCP client daemon |
| * Copyright (c) 2006-2013 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 COMMON_H |
| #define COMMON_H |
| |
| #include <sys/time.h> |
| #include <stdio.h> |
| |
| #include "config.h" |
| #include "defs.h" |
| |
| #ifndef HOSTNAME_MAX_LEN |
| #define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */ |
| #endif |
| |
| #define UNCONST(a) ((void *)(unsigned long)(const void *)(a)) |
| |
| #define timeval_to_double(tv) ((tv)->tv_sec * 1.0 + (tv)->tv_usec * 1.0e-6) |
| #define timernorm(tv) do { \ |
| while ((tv)->tv_usec >= 1000000) { \ |
| (tv)->tv_sec++; \ |
| (tv)->tv_usec -= 1000000; \ |
| } \ |
| } while (0 /* CONSTCOND */); |
| #define tv_to_ms(ms, tv) do { \ |
| ms = (tv)->tv_sec * 1000; \ |
| ms += (tv)->tv_usec / 1000; \ |
| } while (0 /* CONSTCOND */); |
| #define ms_to_tv(tv, ms) do { \ |
| (tv)->tv_sec = ms / 1000; \ |
| (tv)->tv_usec = (ms - ((tv)->tv_sec * 1000)) * 1000; \ |
| } while (0 /* CONSTCOND */); |
| |
| #ifndef TIMEVAL_TO_TIMESPEC |
| #define TIMEVAL_TO_TIMESPEC(tv, ts) do { \ |
| (ts)->tv_sec = (tv)->tv_sec; \ |
| (ts)->tv_nsec = (tv)->tv_usec * 1000; \ |
| } while (0 /* CONSTCOND */) |
| #endif |
| |
| #if __GNUC__ > 2 || defined(__INTEL_COMPILER) |
| # ifndef __dead |
| # define __dead __attribute__((__noreturn__)) |
| # endif |
| # ifndef __packed |
| # define __packed __attribute__((__packed__)) |
| # endif |
| # ifndef __unused |
| # define __unused __attribute__((__unused__)) |
| # endif |
| #else |
| # ifndef __dead |
| # define __dead |
| # endif |
| # ifndef __packed |
| # define __packed |
| # endif |
| # ifndef __unused |
| # define __unused |
| # endif |
| #endif |
| |
| /* We don't really need this as our supported systems define __restrict |
| * automatically for us, but it is here for completeness. */ |
| #ifndef __restrict |
| # if defined(__lint__) |
| # define __restrict |
| # elif __STDC_VERSION__ >= 199901L |
| # define __restrict restrict |
| # elif !(2 < __GNUC__ || (2 == __GNU_C && 95 <= __GNUC_VERSION__)) |
| # define __restrict |
| # endif |
| #endif |
| |
| int set_cloexec(int); |
| int set_nonblock(int); |
| char *get_line(FILE * __restrict); |
| const char *get_hostname(void); |
| extern int clock_monotonic; |
| int get_monotonic(struct timeval *); |
| ssize_t setvar(char ***, const char *, const char *, const char *); |
| ssize_t setvard(char ***, const char *, const char *, int); |
| time_t uptime(void); |
| int writepid(int, pid_t); |
| |
| #endif |