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Diffstat (limited to 'src/common.h')
| -rw-r--r-- | src/common.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/common.h b/src/common.h new file mode 100644 index 000000000000..ff8f3f8b943b --- /dev/null +++ b/src/common.h @@ -0,0 +1,157 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * dhcpcd - DHCP client daemon + * Copyright (c) 2006-2021 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 <sys/types.h> +#include <stdint.h> +#include <stdio.h> + +/* Define eloop queues here, as other apps share eloop.h */ +#define ELOOP_DHCPCD 1 /* default queue */ +#define ELOOP_DHCP 2 +#define ELOOP_ARP 3 +#define ELOOP_IPV4LL 4 +#define ELOOP_IPV6 5 +#define ELOOP_IPV6ND 6 +#define ELOOP_IPV6RA_EXPIRE 7 +#define ELOOP_DHCP6 8 +#define ELOOP_IF 9 + +#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 ROUNDUP4(a) (1 + (((a) - 1) | 3)) +#define ROUNDUP8(a) (1 + (((a) - 1) | 7)) + +/* 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) +#endif + +#if __GNUC__ > 2 || defined(__INTEL_COMPILER) +# ifndef __packed +# define __packed __attribute__((__packed__)) +# endif +# ifndef __unused +# define __unused __attribute__((__unused__)) +# endif +#else +# ifndef __packed +# define __packed +# endif +# ifndef __unused +# define __unused +# endif +#endif + +/* Needed for rbtree(3) compat */ +#ifndef __RCSID +#define __RCSID(a) +#endif +#ifndef __predict_false +# if __GNUC__ > 2 +# define __predict_true(exp) __builtin_expect((exp) != 0, 1) +# define __predict_false(exp) __builtin_expect((exp) != 0, 0) +#else +# define __predict_true(exp) (exp) +# define __predict_false(exp) (exp) +# endif +#endif +#ifndef __BEGIN_DECLS +# if defined(__cplusplus) +# define __BEGIN_DECLS extern "C" { +# define __END_DECLS }; +# else /* __BEGIN_DECLS */ +# define __BEGIN_DECLS +# define __END_DECLS +# endif /* __BEGIN_DECLS */ +#endif /* __BEGIN_DECLS */ + +#ifndef __fallthrough +# if __GNUC__ >= 7 +# define __fallthrough __attribute__((fallthrough)) +# else +# define __fallthrough +# endif +#endif + +/* + * Compile Time Assertion. + */ +#ifndef __CTASSERT +# ifdef __COUNTER__ +# define __CTASSERT(x) __CTASSERT0(x, __ctassert, __COUNTER__) +# else +# define __CTASSERT(x) __CTASSERT99(x, __INCLUDE_LEVEL__, __LINE__) +# define __CTASSERT99(x, a, b) __CTASSERT0(x, __CONCAT(__ctassert,a), \ + __CONCAT(_,b)) +# endif +# define __CTASSERT0(x, y, z) __CTASSERT1(x, y, z) +# define __CTASSERT1(x, y, z) typedef char y ## z[/*CONSTCOND*/(x) ? 1 : -1] __unused +#endif + +#ifndef __arraycount +# define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) +#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 + +const char *hwaddr_ntoa(const void *, size_t, char *, size_t); +size_t hwaddr_aton(uint8_t *, const char *); +ssize_t readfile(const char *, void *, size_t); +ssize_t writefile(const char *, mode_t, const void *, size_t); +int filemtime(const char *, time_t *); +char *get_line(char ** __restrict, ssize_t * __restrict); +int is_root_local(void); +#endif |