You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
190 lines
6.8 KiB
190 lines
6.8 KiB
/* |
|
* dhcpcd - DHCP client daemon |
|
* Copyright (c) 2006-2015 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/param.h> |
|
#include <sys/time.h> |
|
#include <stdio.h> |
|
#include <syslog.h> |
|
|
|
#include "config.h" |
|
#include "defs.h" |
|
#include "dhcpcd.h" |
|
|
|
#ifndef HOSTNAME_MAX_LEN |
|
#define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */ |
|
#endif |
|
|
|
#ifndef MIN |
|
#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b)) |
|
#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b)) |
|
#endif |
|
|
|
#define UNCONST(a) ((void *)(unsigned long)(const void *)(a)) |
|
#define STRINGIFY(a) #a |
|
#define TOSTRING(a) STRINGIFY(a) |
|
#define UNUSED(a) (void)(a) |
|
|
|
#define USEC_PER_SEC 1000000L |
|
#define USEC_PER_NSEC 1000L |
|
#define NSEC_PER_SEC 1000000000L |
|
#define MSEC_PER_SEC 1000L |
|
#define MSEC_PER_NSEC 1000000L |
|
|
|
/* Some systems don't define timespec macros */ |
|
#ifndef timespecclear |
|
#define timespecclear(tsp) (tsp)->tv_sec = (time_t)((tsp)->tv_nsec = 0L) |
|
#define timespecisset(tsp) ((tsp)->tv_sec || (tsp)->tv_nsec) |
|
#define timespeccmp(tsp, usp, cmp) \ |
|
(((tsp)->tv_sec == (usp)->tv_sec) ? \ |
|
((tsp)->tv_nsec cmp (usp)->tv_nsec) : \ |
|
((tsp)->tv_sec cmp (usp)->tv_sec)) |
|
#define timespecadd(tsp, usp, vsp) \ |
|
do { \ |
|
(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec; \ |
|
(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec; \ |
|
if ((vsp)->tv_nsec >= 1000000000L) { \ |
|
(vsp)->tv_sec++; \ |
|
(vsp)->tv_nsec -= 1000000000L; \ |
|
} \ |
|
} while (/* CONSTCOND */ 0) |
|
#define timespecsub(tsp, usp, vsp) \ |
|
do { \ |
|
(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \ |
|
(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \ |
|
if ((vsp)->tv_nsec < 0) { \ |
|
(vsp)->tv_sec--; \ |
|
(vsp)->tv_nsec += 1000000000L; \ |
|
} \ |
|
} while (/* CONSTCOND */ 0) |
|
#endif |
|
|
|
#define timespec_to_double(tv) \ |
|
((double)(tv)->tv_sec + (double)((tv)->tv_nsec) / 1000000000.0) |
|
#define timespecnorm(tv) do { \ |
|
while ((tv)->tv_nsec >= NSEC_PER_SEC) { \ |
|
(tv)->tv_sec++; \ |
|
(tv)->tv_nsec -= NSEC_PER_SEC; \ |
|
} \ |
|
} while (0 /* CONSTCOND */); |
|
#define ts_to_ms(ms, tv) do { \ |
|
ms = (tv)->tv_sec * MSEC_PER_SEC; \ |
|
ms += (tv)->tv_nsec / MSEC_PER_NSEC; \ |
|
} while (0 /* CONSTCOND */); |
|
#define ms_to_ts(tv, ms) do { \ |
|
(tv)->tv_sec = ms / MSEC_PER_SEC; \ |
|
(tv)->tv_nsec = (suseconds_t)(ms - ((tv)->tv_sec * MSEC_PER_SEC)) \ |
|
* MSEC_PER_NSEC; \ |
|
} 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 * USEC_PER_NSEC; \ |
|
} 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 __printflike |
|
# define __printflike(a, b) __attribute__((format(printf, a, b))) |
|
# endif |
|
# ifndef __unused |
|
# define __unused __attribute__((__unused__)) |
|
# endif |
|
#else |
|
# ifndef __dead |
|
# define __dead |
|
# endif |
|
# ifndef __packed |
|
# define __packed |
|
# endif |
|
# ifndef __printflike |
|
# define __printflike |
|
# 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 |
|
|
|
void get_line_free(void); |
|
const char *get_hostname(char *, size_t, int); |
|
extern int clock_monotonic; |
|
int get_monotonic(struct timespec *); |
|
|
|
/* We could shave a few k off the binary size by just using the |
|
* syslog(3) interface. |
|
* However, this results in a ugly output on the command line |
|
* and relies on syslogd(8) starting before dhcpcd which is not |
|
* always the case. */ |
|
#ifndef USE_LOGFILE |
|
# define USE_LOGFILE 1 |
|
#endif |
|
#if USE_LOGFILE |
|
void logger_open(struct dhcpcd_ctx *); |
|
#define logger_mask(ctx, lvl) setlogmask((lvl)) |
|
__printflike(3, 4) void logger(struct dhcpcd_ctx *, int, const char *, ...); |
|
void logger_close(struct dhcpcd_ctx *); |
|
#else |
|
#define logger_open(ctx) openlog(PACKAGE, LOG_PERROR | LOG_PID, LOG_DAEMON) |
|
#define logger_mask(ctx, lvl) setlogmask((lvl)) |
|
#define logger(ctx, pri, fmt, ...) \ |
|
do { \ |
|
UNUSED((ctx)); \ |
|
syslog((pri), (fmt), ##__VA_ARGS__); \ |
|
} while (0 /*CONSTCOND */) |
|
#define logger_close(ctx) closelog() |
|
#endif |
|
|
|
ssize_t setvar(struct dhcpcd_ctx *, |
|
char ***, const char *, const char *, const char *); |
|
ssize_t setvard(struct dhcpcd_ctx *, |
|
char ***, const char *, const char *, size_t); |
|
time_t uptime(void); |
|
|
|
char *hwaddr_ntoa(const unsigned char *, size_t, char *, size_t); |
|
size_t hwaddr_aton(unsigned char *, const char *); |
|
#endif
|
|
|