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compat.h
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compat.h
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/*-
* Copyright © 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
* 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018,
* 2019, 2020
* mirabilos <m@mirbsd.org>
* Copyright © 2018
* mirabilos <t.glaser@tarent.de>
*
* Provided that these terms and disclaimer and all copyright notices
* are retained or reproduced in an accompanying document, permission
* is granted to deal in this work without restriction, including un‐
* limited rights to use, publicly perform, distribute, sell, modify,
* merge, give away, or sublicence.
*
* This work is provided “AS IS” and WITHOUT WARRANTY of any kind, to
* the utmost extent permitted by applicable law, neither express nor
* implied; without malicious intent or gross negligence. In no event
* may a licensor, author or contributor be held liable for indirect,
* direct, other damage, loss, or other issues arising in any way out
* of dealing in the work, even if advised of the possibility of such
* damage or existence of a defect, except proven that it results out
* of said person’s immediate fault when using the work as intended.
*/
#ifdef MKSH_USE_AUTOCONF_H
/* things that “should” have been on the command line */
#include "autoconf.h"
#undef MKSH_USE_AUTOCONF_H
#endif
#ifndef PAX_COMPAT_H
#define PAX_COMPAT_H
#undef MBSDPORT_H
#ifdef __MirBSD__
#include <sys/param.h>
#else
#include <sys/types.h>
#endif
#if HAVE_SYS_MKDEV_H
#include <sys/mkdev.h>
#endif
#if HAVE_SYS_SYSMACROS_H
#include <sys/sysmacros.h>
#endif
#if HAVE_STDINT_H
#include <stdint.h>
#endif
#include ".linked/mbsdcc.h"
#undef __attribute__
#if HAVE_ATTRIBUTE_BOUNDED
#define MKSH_A_BOUNDED(x,y,z) __attribute__((__bounded__(x, y, z)))
#else
#define MKSH_A_BOUNDED(x,y,z) /* nothing */
#endif
#if HAVE_ATTRIBUTE_FORMAT
#define MKSH_A_FORMAT(x,y,z) __attribute__((__format__(x, y, z)))
#else
#define MKSH_A_FORMAT(x,y,z) /* nothing */
#endif
#if HAVE_ATTRIBUTE_NONNULL
#define MKSH_A_NONNULL(x) __attribute__((__nonnull__(x)))
#else
#define MKSH_A_NONNULL(x) /* nothing */
#endif
#if HAVE_ATTRIBUTE_NORETURN
#define MKSH_A_NORETURN __attribute__((__noreturn__))
#else
#define MKSH_A_NORETURN /* nothing */
#endif
#if HAVE_ATTRIBUTE_PURE
#define MKSH_A_PURE __attribute__((__pure__))
#else
#define MKSH_A_PURE /* nothing */
#endif
#if HAVE_ATTRIBUTE_UNUSED
#define MKSH_A_UNUSED __attribute__((__unused__))
#else
#define MKSH_A_UNUSED /* nothing */
#endif
#if HAVE_ATTRIBUTE_USED
#define MKSH_A_USED __attribute__((__used__))
#else
#define MKSH_A_USED /* nothing */
#endif
#if defined(MirBSD) && (MirBSD >= 0x09A1) && \
defined(__ELF__) && defined(__GNUC__) && \
!defined(__llvm__) && !defined(__NWCC__)
/*
* We got usable __IDSTRING __COPYRIGHT __RCSID __SCCSID macros
* which work for all cases; no need to redefine them using the
* "portable" macros from below when we might have the "better"
* gcc+ELF specific macros or other system dependent ones.
*/
#else
#undef __IDSTRING
#undef __IDSTRING_CONCAT
#undef __IDSTRING_EXPAND
#undef __COPYRIGHT
#undef __RCSID
#undef __SCCSID
#define __IDSTRING_CONCAT(l,p) __LINTED__ ## l ## _ ## p
#define __IDSTRING_EXPAND(l,p) __IDSTRING_CONCAT(l,p)
#ifdef MKSH_DONT_EMIT_IDSTRING
#define __IDSTRING(prefix,string) /* nothing */
#else
#define __IDSTRING(prefix,string) \
static const char __IDSTRING_EXPAND(__LINE__,prefix) [] \
MKSH_A_USED = "@(""#)" #prefix ": " string
#endif
#define __COPYRIGHT(x) __IDSTRING(copyright,x)
#define __RCSID(x) __IDSTRING(rcsid,x)
#define __SCCSID(x) __IDSTRING(sccsid,x)
#endif
#ifdef EXTERN
__IDSTRING(rcsid_compat_h, "$MirOS: src/bin/pax/compat.h,v 1.15 2024/08/17 23:33:51 tg Exp $");
__IDSTRING(rcsid_mbsdcc_h, SYSKERN_MBSDCC_H);
#endif
/* possibly missing types */
#if !HAVE_CAN_INTTYPES
#if !HAVE_CAN_UCBINTS
typedef signed int int32_t;
typedef unsigned int uint32_t;
#else
typedef u_int32_t uint32_t;
#endif
#endif
#if !HAVE_CAN_ULONG
typedef unsigned long u_long;
#endif
/* boolean type (no <stdbool.h> deliberately) */
typedef unsigned char Wahr;
#define Ja 1U
#define Nee 0U
#define isWahr(cond) ((cond) ? Ja : Nee)
/* missing macros / header bug workarounds */
#if !defined(LLONG_MIN) && defined(LONG_LONG_MIN)
#define LLONG_MIN LONG_LONG_MIN
#define LLONG_MAX LONG_LONG_MAX
#define ULLONG_MAX ULONG_LONG_MAX
#endif
/* macros dealing with types differing across systems */
#if HAVE_OFFT_LONG
#define OT_FMT "lu"
#else
#define OT_FMT "llu"
#endif
/* macros dealing with struct stat.sb_[acm]time */
#if HAVE_ST_MTIMENSEC
#define st_timecmp(x,sbpa,sbpb,op) ( \
((sbpa)->st_ ## x ## time == (sbpb)->st_ ## x ## time) ? \
((sbpa)->st_ ## x ## timensec op (sbpb)->st_ ## x ## timensec) : \
((sbpa)->st_ ## x ## time op (sbpb)->st_ ## x ## time) \
)
#define st_timecpy(x,sbpd,sbps) do { \
(sbpd)->st_ ## x ## time = (sbps)->st_ ## x ## time; \
(sbpd)->st_ ## x ## timensec = (sbps)->st_ ## x ## timensec; \
} while (/* CONSTCOND */ 0)
#define st_timexp(x,ts,sbp) do { \
(ts)->tv_sec = (sbp)->st_ ## x ## time; \
(ts)->tv_nsec = (sbp)->st_ ## x ## timensec; \
} while (/* CONSTCOND */ 0)
#else
#define st_timecmp(x,sbpa,sbpb,op) \
((sbpa)->st_ ## x ## time op (sbpb)->st_ ## x ## time)
#define st_timecpy(x,sbpd,sbps) do { \
(sbpd)->st_ ## x ## time = (sbps)->st_ ## x ## time; \
} while (/* CONSTCOND */ 0)
#define st_timexp(x,ts,sbp) do { \
(ts)->tv_sec = (sbp)->st_ ## x ## time; \
(ts)->tv_nsec = 0; \
} while (/* CONSTCOND */ 0)
#endif
/* compat.c */
#define BO__TWO 0x01 /* (internal use only) */
#define BO_CLEXEC 0x02 /* set close-on-exec flag or warn */
#define BO_MAYBE_DIR 0x04 /* add O_DIRECTORY if defined */
#define binopen2(feat,path,flags) binopen3((feat) | BO__TWO, (path), (flags), 0)
int binopen3(int, const char *, int, mode_t)
MKSH_A_NONNULL(2);
ssize_t dwrite(int, const void *, size_t)
MKSH_A_BOUNDED(__buffer__, 2, 3);
/* exclude system replacement functions in early link check */
#ifndef MIRTOCONF_EARLY
#if !HAVE_DPRINTF
/* replacement only as powerful as needed for this */
void dprintf(int, const char *, ...)
MKSH_A_NONNULL(2)
MKSH_A_FORMAT(__printf__, 2, 3);
#endif
#if !HAVE_REALLOCARRAY
void *reallocarray(void *, size_t, size_t);
#endif
#if !HAVE_STRLCPY
size_t strlcat(char *, const char *, size_t)
MKSH_A_BOUNDED(__string__, 1, 3);
size_t strlcpy(char *, const char *, size_t)
MKSH_A_BOUNDED(__string__, 1, 3);
#endif
#if !HAVE_STRMODE
void strmode(mode_t, char *);
#endif
#if !HAVE_STRTONUM
long long strtonum(const char *, long long, long long, const char **);
#endif
#endif /* !MIRTOCONF_EARLY */
#endif