mirror of
https://github.com/rsmarples/dhcpcd.git
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115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2014 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef COMMON_H
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#define COMMON_H
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#include <sys/time.h>
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#include <stdio.h>
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#include "config.h"
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#include "defs.h"
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#ifndef HOSTNAME_MAX_LEN
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#define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */
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#endif
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#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
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#define STRINGIFY(a) #a
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#define TOSTRING(a) STRINGIFY(a)
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#define timeval_to_double(tv) ((tv)->tv_sec * 1.0 + (tv)->tv_usec * 1.0e-6)
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#define timernorm(tv) do { \
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while ((tv)->tv_usec >= 1000000) { \
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(tv)->tv_sec++; \
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(tv)->tv_usec -= 1000000; \
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} \
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} while (0 /* CONSTCOND */);
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#define tv_to_ms(ms, tv) do { \
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ms = (tv)->tv_sec * 1000; \
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ms += (tv)->tv_usec / 1000; \
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} while (0 /* CONSTCOND */);
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#define ms_to_tv(tv, ms) do { \
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(tv)->tv_sec = ms / 1000; \
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(tv)->tv_usec = (ms - ((tv)->tv_sec * 1000)) * 1000; \
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} while (0 /* CONSTCOND */);
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#ifndef TIMEVAL_TO_TIMESPEC
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#define TIMEVAL_TO_TIMESPEC(tv, ts) do { \
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(ts)->tv_sec = (tv)->tv_sec; \
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(ts)->tv_nsec = (tv)->tv_usec * 1000; \
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} while (0 /* CONSTCOND */)
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#endif
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#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
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# ifndef __dead
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# define __dead __attribute__((__noreturn__))
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# endif
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# ifndef __packed
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# define __packed __attribute__((__packed__))
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# endif
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# ifndef __unused
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# define __unused __attribute__((__unused__))
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# endif
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#else
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# ifndef __dead
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# define __dead
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# endif
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# ifndef __packed
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# define __packed
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# endif
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# ifndef __unused
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# define __unused
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# endif
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#endif
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/* We don't really need this as our supported systems define __restrict
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* automatically for us, but it is here for completeness. */
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#ifndef __restrict
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# if defined(__lint__)
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# define __restrict
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# elif __STDC_VERSION__ >= 199901L
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# define __restrict restrict
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# elif !(2 < __GNUC__ || (2 == __GNU_C && 95 <= __GNUC_VERSION__))
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# define __restrict
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# endif
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#endif
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int set_cloexec(int);
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int set_nonblock(int);
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char *get_line(FILE * __restrict);
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void get_line_free(void);
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const char *get_hostname(int);
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extern int clock_monotonic;
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int get_monotonic(struct timeval *);
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ssize_t setvar(char ***, const char *, const char *, const char *);
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ssize_t setvard(char ***, const char *, const char *, int);
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time_t uptime(void);
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int writepid(int, pid_t);
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#endif
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