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compat_defs.h revision 1.64
      1 /*	$NetBSD: compat_defs.h,v 1.64 2007/10/19 15:56:53 christos Exp $	*/
      2 
      3 #ifndef	__NETBSD_COMPAT_DEFS_H__
      4 #define	__NETBSD_COMPAT_DEFS_H__
      5 
      6 
      7 /* Work around some complete brain damage. */
      8 /*
      9  * Linux: <features.h> turns on _POSIX_SOURCE by default, even though the
     10  * program (not the OS) should do that.  Preload <features.h> to keep any
     11  * of this crap from being pulled in, and undefine _POSIX_SOURCE.
     12  */
     13 
     14 #if defined(__linux__) && HAVE_FEATURES_H
     15 #include <features.h>
     16 #endif
     17 
     18 /* So _NETBSD_SOURCE doesn't end up defined. Define enough to pull in standard
     19    defs. Other platforms may need similiar defines. */
     20 #ifdef __NetBSD__
     21 #define	_ISOC99_SOURCE
     22 #define _POSIX_SOURCE	1
     23 #define _POSIX_C_SOURCE	200112L
     24 #define _XOPEN_SOURCE 600
     25 #else
     26 #undef _POSIX_SOURCE
     27 #undef _POSIX_C_SOURCE
     28 #endif
     29 
     30 /* System headers needed for (re)definitions below. */
     31 
     32 #include <sys/types.h>
     33 #include <sys/mman.h>
     34 #include <sys/param.h>
     35 /* time.h needs to be pulled in first at least on netbsd w/o _NETBSD_SOURCE */
     36 #include <sys/time.h>
     37 #include <sys/stat.h>
     38 #include <errno.h>
     39 #include <fcntl.h>
     40 #include <grp.h>
     41 #include <limits.h>
     42 #include <paths.h>
     43 #include <stdarg.h>
     44 #include <stdio.h>
     45 #include <stdlib.h>
     46 #include <string.h>
     47 
     48 #if HAVE_SYS_CDEFS_H
     49 #include <sys/cdefs.h>
     50 #endif
     51 #if HAVE_SYS_SYSLIMITS_H
     52 #include <sys/syslimits.h>
     53 #endif
     54 #if HAVE_SYS_SYSMACROS_H
     55 /* major(), minor() on SVR4 */
     56 #include <sys/sysmacros.h>
     57 #endif
     58 #if HAVE_INTTYPES_H
     59 #include <inttypes.h>
     60 #endif
     61 #if HAVE_STDDEF_H
     62 #include <stddef.h>
     63 #endif
     64 
     65 #ifdef _NETBSD_SOURCE
     66 #error _NETBSD_SOURCE is *not* to be defined.
     67 #endif
     68 
     69 /* Need this since we can't depend on NetBSD's version to be around */
     70 #ifdef __UNCONST
     71 #undef __UNCONST
     72 #endif
     73 #define __UNCONST(a)   ((void *)(unsigned long)(const void *)(a))
     74 
     75 /* We don't include <pwd.h> here, so that "compat_pwd.h" works. */
     76 struct passwd;
     77 
     78 /* Assume an ANSI compiler for the host. */
     79 
     80 #undef __P
     81 #define __P(x) x
     82 
     83 #ifndef __BEGIN_DECLS
     84 #define __BEGIN_DECLS
     85 #endif
     86 #ifndef __END_DECLS
     87 #define __END_DECLS
     88 #endif
     89 
     90 /* Some things usually in BSD <sys/cdefs.h>. */
     91 
     92 #ifndef __CONCAT
     93 #define	__CONCAT(x,y)	x ## y
     94 #endif
     95 #if !defined(__attribute__) && !defined(__GNUC__)
     96 #define __attribute__(x)
     97 #endif
     98 #if !defined(__packed)
     99 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
    100 #define __packed	__attribute__((__packed__))
    101 #else
    102 #define	__packed	error: no __packed for this compiler
    103 #endif
    104 #endif /* !__packed */
    105 #ifndef __RENAME
    106 #define __RENAME(x)
    107 #endif
    108 #undef __aconst
    109 #define __aconst
    110 #undef __dead
    111 #define __dead
    112 #undef __restrict
    113 #define __restrict
    114 #undef __unused
    115 #define __unused
    116 
    117 /* Dirent support. */
    118 
    119 #if HAVE_DIRENT_H
    120 # if defined(__linux__) && defined(__USE_BSD)
    121 #  undef __USE_BSD
    122 #  include <dirent.h>
    123 #  define __USE_BSD 1
    124 #  undef d_fileno
    125 # else
    126 #  include <dirent.h>
    127 #  if defined(__DARWIN_UNIX03)
    128 #   undef d_fileno
    129 #  endif
    130 # endif
    131 # define NAMLEN(dirent) (strlen((dirent)->d_name))
    132 #else
    133 # define dirent direct
    134 # define NAMLEN(dirent) ((dirent)->d_namlen)
    135 # if HAVE_SYS_NDIR_H
    136 #  include <sys/ndir.h>
    137 # endif
    138 # if HAVE_SYS_DIR_H
    139 #  include <sys/dir.h>
    140 # endif
    141 # if HAVE_NDIR_H
    142 #  include <ndir.h>
    143 # endif
    144 #endif
    145 
    146 /* Type substitutes. */
    147 
    148 #if !HAVE_ID_T
    149 typedef unsigned int id_t;
    150 #endif
    151 
    152 #if !HAVE_SOCKLEN_T
    153 typedef int socklen_t;
    154 #endif
    155 
    156 #if !HAVE_U_LONG
    157 typedef unsigned long u_long;
    158 #endif
    159 
    160 #if !HAVE_U_CHAR
    161 typedef unsigned char u_char;
    162 #endif
    163 
    164 #if !HAVE_U_INT
    165 typedef unsigned int u_int;
    166 #endif
    167 
    168 #if !HAVE_U_SHORT
    169 typedef unsigned short u_short;
    170 #endif
    171 
    172 /* Prototypes for replacement functions. */
    173 
    174 #if !HAVE_ATOLL
    175 long long int atoll(const char *);
    176 #endif
    177 
    178 #if !HAVE_ASPRINTF
    179 int asprintf(char **, const char *, ...);
    180 #endif
    181 
    182 #if !HAVE_ASNPRINTF
    183 int asnprintf(char **, size_t, const char *, ...);
    184 #endif
    185 
    186 #if !HAVE_BASENAME
    187 char *basename(char *);
    188 #endif
    189 
    190 #if !HAVE_DECL_OPTIND
    191 int getopt(int, char *const *, const char *);
    192 extern char *optarg;
    193 extern int optind, opterr, optopt;
    194 #endif
    195 
    196 #if !HAVE_DIRNAME
    197 char *dirname(char *);
    198 #endif
    199 
    200 #if !HAVE_DIRFD
    201 #if HAVE_DIR_DD_FD
    202 #define dirfd(dirp) ((dirp)->dd_fd)
    203 #elif HAVE_DIR___DD_FD
    204 #define dirfd(dirp) ((dirp)->__dd_fd)
    205 #else
    206 /*XXX: Very hacky but no other way to bring this into scope w/o defining
    207   _NETBSD_SOURCE which we're avoiding. */
    208 #ifdef __NetBSD__
    209 struct _dirdesc {
    210         int     dd_fd;          /* file descriptor associated with directory */
    211 	long    dd_loc;         /* offset in current buffer */
    212 	long    dd_size;        /* amount of data returned by getdents */
    213 	char    *dd_buf;        /* data buffer */
    214 	int     dd_len;         /* size of data buffer */
    215 	off_t   dd_seek;        /* magic cookie returned by getdents */
    216 	long    dd_rewind;      /* magic cookie for rewinding */
    217 	int     dd_flags;       /* flags for readdir */
    218 	void    *dd_lock;       /* lock for concurrent access */
    219 };
    220 #define dirfd(dirp)     (((struct _dirdesc *)dirp)->dd_fd)
    221 #else
    222 #error cannot figure out how to turn a DIR * into a fd
    223 #endif
    224 #endif
    225 #endif
    226 
    227 #if !HAVE_ERR_H
    228 void err(int, const char *, ...);
    229 void errx(int, const char *, ...);
    230 void warn(const char *, ...);
    231 void warnx(const char *, ...);
    232 #endif
    233 
    234 #if !HAVE_ESETFUNC
    235 void (*esetfunc(void (*)(int, const char *, ...)))(int, const char *, ...);
    236 size_t estrlcpy(char *, const char *, size_t);
    237 size_t estrlcat(char *, const char *, size_t);
    238 char *estrdup(const char *);
    239 char *estrndup(const char *, size_t);
    240 void *ecalloc(size_t, size_t);
    241 void *emalloc(size_t);
    242 void *erealloc(void *, size_t);
    243 FILE *efopen(const char *, const char *);
    244 int easprintf(char **, const char *, ...);
    245 int evasprintf(char **, const char *, va_list);
    246 #endif
    247 
    248 #if !HAVE_FGETLN || defined(__NetBSD__)
    249 char *fgetln(FILE *, size_t *);
    250 #endif
    251 
    252 #if !HAVE_FLOCK
    253 # define LOCK_SH		0x01
    254 # define LOCK_EX		0x02
    255 # define LOCK_NB		0x04
    256 # define LOCK_UN		0x08
    257 int flock(int, int);
    258 #endif
    259 
    260 #if !HAVE_FPARSELN || defined(__NetBSD__)
    261 # define FPARSELN_UNESCESC	0x01
    262 # define FPARSELN_UNESCCONT	0x02
    263 # define FPARSELN_UNESCCOMM	0x04
    264 # define FPARSELN_UNESCREST	0x08
    265 # define FPARSELN_UNESCALL	0x0f
    266 char *fparseln(FILE *, size_t *, size_t *, const char [3], int);
    267 #endif
    268 
    269 #if !HAVE_ISSETUGID
    270 int issetugid(void);
    271 #endif
    272 
    273 #if !HAVE_ISBLANK && !defined(isblank)
    274 #define isblank(x) ((x) == ' ' || (x) == '\t')
    275 #endif
    276 
    277 #define __nbcompat_bswap16(x)	((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
    278 
    279 #define __nbcompat_bswap32(x)	((((x) << 24) & 0xff000000) | \
    280 				 (((x) <<  8) & 0x00ff0000) | \
    281 				 (((x) >>  8) & 0x0000ff00) | \
    282 				 (((x) >> 24) & 0x000000ff))
    283 
    284 #define __nbcompat_bswap64(x)	(((u_int64_t)bswap32((x)) << 32) | \
    285 				 ((u_int64_t)bswap32((x) >> 32)))
    286 
    287 #if ! HAVE_DECL_BSWAP16
    288 #ifdef bswap16
    289 #undef bswap16
    290 #endif
    291 #define bswap16(x)	__nbcompat_bswap16(x)
    292 #endif
    293 #if ! HAVE_DECL_BSWAP32
    294 #ifdef bswap32
    295 #undef bswap32
    296 #endif
    297 #define bswap32(x)	__nbcompat_bswap32(x)
    298 #endif
    299 #if ! HAVE_DECL_BSWAP64
    300 #ifdef bswap64
    301 #undef bswap64
    302 #endif
    303 #define bswap64(x)	__nbcompat_bswap64(x)
    304 #endif
    305 
    306 #if !HAVE_MKSTEMP
    307 int mkstemp(char *);
    308 #endif
    309 
    310 #if !HAVE_MKDTEMP
    311 char *mkdtemp(char *);
    312 #endif
    313 
    314 #if !HAVE_MKSTEMP || !HAVE_MKDTEMP
    315 /* This is a prototype for the internal function. */
    316 int gettemp(char *, int *, int);
    317 #endif
    318 
    319 #if !HAVE_PREAD
    320 ssize_t pread(int, void *, size_t, off_t);
    321 #endif
    322 
    323 #if !HAVE_HEAPSORT
    324 int heapsort (void *, size_t, size_t, int (*)(const void *, const void *));
    325 #endif
    326 /* Make them use our version */
    327 #  define heapsort __nbcompat_heapsort
    328 
    329 #if !HAVE_USER_FROM_UID
    330 /* Make them use our version */
    331 #  define user_from_uid __nbcompat_user_from_uid
    332 #endif
    333 #if !HAVE_GROUP_FROM_GID
    334 /* Make them use our version */
    335 #  define group_from_gid __nbcompat_group_from_gid
    336 #endif
    337 
    338 #if !HAVE_DECL_GID_FROM_USER
    339 int uid_from_user(const char *, uid_t *);
    340 #endif
    341 #if !HAVE_DECL_GID_FROM_GROUP
    342 int gid_from_group(const char *, gid_t *);
    343 #endif
    344 #if !HAVE_DECL_USER_FROM_UID
    345 const char	*user_from_uid(uid_t, int);
    346 #endif
    347 #if !HAVE_DECL_GROUP_FROM_GID
    348 const char	*group_from_gid(gid_t, int);
    349 #endif
    350 #if !HAVE_DECL_STRNDUP
    351 char		*strndup(const char *, size_t);
    352 #endif
    353 #if !HAVE_DECL_LCHFLAGS
    354 int		lchflags(const char *, unsigned long);
    355 #endif
    356 #if !HAVE_DECL_LCHMOD
    357 int		lchmod(const char *, mode_t);
    358 #endif
    359 #if !HAVE_DECL_LCHOWN
    360 int		lchown(const char *, uid_t, gid_t);
    361 #endif
    362 #if !HAVE_DECL_PWCACHE_USERDB
    363 int		pwcache_userdb(int (*)(int), void (*)(void),
    364 				struct passwd * (*)(const char *),
    365 				struct passwd * (*)(uid_t));
    366 #endif
    367 #if !HAVE_DECL_PWCACHE_GROUPDB
    368 int		 pwcache_groupdb(int (*)(int), void (*)(void),
    369 				    struct group * (*)(const char *),
    370 				    struct group * (*)(gid_t));
    371 #endif
    372 
    373 #if !HAVE_PWRITE
    374 ssize_t pwrite(int, const void *, size_t, off_t);
    375 #endif
    376 
    377 #if !HAVE_RAISE_DEFAULT_SIGNAL
    378 int raise_default_signal(int);
    379 #endif
    380 
    381 #if !HAVE_SETENV
    382 int setenv(const char *, const char *, int);
    383 #endif
    384 
    385 #if !HAVE_DECL_SETGROUPENT
    386 int setgroupent(int);
    387 #endif
    388 
    389 #if !HAVE_DECL_SETPASSENT
    390 int setpassent(int);
    391 #endif
    392 
    393 #if !HAVE_SETPROGNAME || defined(__NetBSD__)
    394 const char *getprogname(void);
    395 void setprogname(const char *);
    396 #endif
    397 
    398 #if !HAVE_SNPRINTF
    399 int snprintf(char *, size_t, const char *, ...);
    400 #endif
    401 
    402 #if !HAVE_STRLCAT
    403 size_t strlcat(char *, const char *, size_t);
    404 #endif
    405 
    406 #if !HAVE_STRLCPY
    407 size_t strlcpy(char *, const char *, size_t);
    408 #endif
    409 
    410 #if !HAVE_STRMODE
    411 void strmode(mode_t, char *);
    412 #endif
    413 
    414 #if !HAVE_STRNDUP
    415 char *strndup(const char *, size_t);
    416 #endif
    417 
    418 #if !HAVE_STRSEP || defined(__NetBSD__)
    419 char *strsep(char **, const char *);
    420 #endif
    421 
    422 #if !HAVE_DECL_STRSUFTOLL
    423 long long strsuftoll(const char *, const char *, long long, long long);
    424 long long strsuftollx(const char *, const char *,
    425 			long long, long long, char *, size_t);
    426 #endif
    427 
    428 #if !HAVE_STRTOLL
    429 long long strtoll(const char *, char **, int);
    430 #endif
    431 
    432 #if !HAVE_USER_FROM_UID
    433 const char *user_from_uid(uid_t, int);
    434 #endif
    435 
    436 #if !HAVE_GROUP_FROM_GID
    437 const char *group_from_gid(gid_t, int);
    438 #endif
    439 
    440 #if !HAVE_VASPRINTF
    441 int vasprintf(char **, const char *, va_list);
    442 #endif
    443 
    444 #if !HAVE_VASNPRINTF
    445 int vasnprintf(char **, size_t, const char *, va_list);
    446 #endif
    447 
    448 #if !HAVE_VSNPRINTF
    449 int vsnprintf(char *, size_t, const char *, va_list);
    450 #endif
    451 
    452 /*
    453  * getmode() and setmode() are always defined, as these function names
    454  * exist but with very different meanings on other OS's.  The compat
    455  * versions here simply accept an octal mode number; the "u+x,g-w" type
    456  * of syntax is not accepted.
    457  */
    458 
    459 #define getmode __nbcompat_getmode
    460 #define setmode __nbcompat_setmode
    461 
    462 mode_t getmode(const void *, mode_t);
    463 void *setmode(const char *);
    464 
    465 /* Eliminate assertions embedded in binaries. */
    466 
    467 #undef _DIAGASSERT
    468 #define _DIAGASSERT(x)
    469 
    470 /* Various sources use this */
    471 #undef	__RCSID
    472 #define	__RCSID(x)
    473 #undef	__SCCSID
    474 #define	__SCCSID(x)
    475 #undef	__COPYRIGHT
    476 #define	__COPYRIGHT(x)
    477 #undef	__KERNEL_RCSID
    478 #define	__KERNEL_RCSID(x,y)
    479 
    480 /* Heimdal expects this one. */
    481 
    482 #undef RCSID
    483 #define RCSID(x)
    484 
    485 /* Some definitions not available on all systems. */
    486 
    487 /* <errno.h> */
    488 
    489 #ifndef EFTYPE
    490 #define EFTYPE EIO
    491 #endif
    492 
    493 /* <fcntl.h> */
    494 
    495 #ifndef O_EXLOCK
    496 #define O_EXLOCK 0
    497 #endif
    498 #ifndef O_SHLOCK
    499 #define O_SHLOCK 0
    500 #endif
    501 
    502 /* <limits.h> */
    503 
    504 #ifndef UID_MAX
    505 #define UID_MAX 32767
    506 #endif
    507 #ifndef GID_MAX
    508 #define GID_MAX UID_MAX
    509 #endif
    510 
    511 #ifndef UQUAD_MAX
    512 #define UQUAD_MAX ((u_quad_t)-1)
    513 #endif
    514 #ifndef QUAD_MAX
    515 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1))
    516 #endif
    517 #ifndef QUAD_MIN
    518 #define QUAD_MIN ((quad_t)(~QUAD_MAX))
    519 #endif
    520 #ifndef ULLONG_MAX
    521 #define ULLONG_MAX ((unsigned long long)-1)
    522 #endif
    523 #ifndef LLONG_MAX
    524 #define LLONG_MAX ((long long)(ULLONG_MAX >> 1))
    525 #endif
    526 #ifndef LLONG_MIN
    527 #define LLONG_MIN ((long long)(~LLONG_MAX))
    528 #endif
    529 
    530 /* <paths.h> */
    531 
    532 /* The host's _PATH_BSHELL might be broken, so override it. */
    533 #undef _PATH_BSHELL
    534 #define _PATH_BSHELL PATH_BSHELL
    535 #ifndef _PATH_DEFPATH
    536 #define _PATH_DEFPATH "/usr/bin:/bin:/usr/local/bin"
    537 #endif
    538 #ifndef _PATH_DEV
    539 #define _PATH_DEV "/dev/"
    540 #endif
    541 #ifndef _PATH_DEVNULL
    542 #define _PATH_DEVNULL _PATH_DEV "null"
    543 #endif
    544 #ifndef _PATH_TMP
    545 #define _PATH_TMP "/tmp/"
    546 #endif
    547 #ifndef _PATH_DEFTAPE
    548 #define _PATH_DEFTAPE "/dev/nrst0"
    549 #endif
    550 #ifndef _PATH_VI
    551 #define _PATH_VI "/usr/bin/vi"
    552 #endif
    553 
    554 /* <stdarg.h> */
    555 
    556 #ifndef _BSD_VA_LIST_
    557 #define _BSD_VA_LIST_ va_list
    558 #endif
    559 
    560 /* <stdint.h> */
    561 
    562 #if !defined(SIZE_MAX) && defined(SIZE_T_MAX)
    563 #define SIZE_MAX SIZE_T_MAX
    564 #endif
    565 
    566 #ifndef UINT8_MAX
    567 #define UINT8_MAX 0xffU
    568 #endif
    569 
    570 #ifndef UINT16_MAX
    571 #define UINT16_MAX 0xffffU
    572 #endif
    573 
    574 #ifndef UINT32_MAX
    575 #define UINT32_MAX 0xffffffffU
    576 #endif
    577 
    578 /* <stdlib.h> */
    579 
    580 #ifndef __GNUC__
    581 # if HAVE_ALLOCA_H
    582 #  include <alloca.h>
    583 # else
    584 #  ifndef alloca /* predefined by HP cc +Olibcalls */
    585 char *alloca ();
    586 #  endif
    587 # endif
    588 #endif
    589 
    590 /* avoid prototype conflicts with host */
    591 #define cgetcap __nbcompat_cgetcap
    592 #define cgetclose __nbcompat_cgetclose
    593 #define cgetent __nbcompat_cgetent
    594 #define cgetfirst __nbcompat_cgetfirst
    595 #define cgetmatch __nbcompat_cgetmatch
    596 #define cgetnext __nbcompat_cgetnext
    597 #define cgetnum __nbcompat_cgetnum
    598 #define cgetset __nbcompat_cgetset
    599 #define cgetstr __nbcompat_cgetstr
    600 #define cgetustr __nbcompat_cgetustr
    601 
    602 char	*cgetcap(char *, const char *, int);
    603 int	 cgetclose(void);
    604 int	 cgetent(char **, const char * const *, const char *);
    605 int	 cgetfirst(char **, const char * const *);
    606 int	 cgetmatch(const char *, const char *);
    607 int	 cgetnext(char **, const char * const *);
    608 int	 cgetnum(char *, const char *, long *);
    609 int	 cgetset(const char *);
    610 int	 cgetstr(char *, const char *, char **);
    611 int	 cgetustr(char *, const char *, char **);
    612 
    613 /* <sys/endian.h> */
    614 
    615 #if WORDS_BIGENDIAN
    616 #if !HAVE_DECL_HTOBE16
    617 #define htobe16(x)	(x)
    618 #endif
    619 #if !HAVE_DECL_HTOBE32
    620 #define htobe32(x)	(x)
    621 #endif
    622 #if !HAVE_DECL_HTOBE64
    623 #define htobe64(x)	(x)
    624 #endif
    625 #if !HAVE_DECL_HTOLE16
    626 #define htole16(x)	bswap16((u_int16_t)(x))
    627 #endif
    628 #if !HAVE_DECL_HTOLE32
    629 #define htole32(x)	bswap32((u_int32_t)(x))
    630 #endif
    631 #if !HAVE_DECL_HTOLE64
    632 #define htole64(x)	bswap64((u_int64_t)(x))
    633 #endif
    634 #else
    635 #if !HAVE_DECL_HTOBE16
    636 #define htobe16(x)	bswap16((u_int16_t)(x))
    637 #endif
    638 #if !HAVE_DECL_HTOBE32
    639 #define htobe32(x)	bswap32((u_int32_t)(x))
    640 #endif
    641 #if !HAVE_DECL_HTOBE64
    642 #define htobe64(x)	bswap64((u_int64_t)(x))
    643 #endif
    644 #if !HAVE_DECL_HTOLE16
    645 #define htole16(x)	(x)
    646 #endif
    647 #if !HAVE_DECL_HTOLE32
    648 #define htole32(x)	(x)
    649 #endif
    650 #if !HAVE_DECL_HTOLE64
    651 #define htole64(x)	(x)
    652 #endif
    653 #endif
    654 #if !HAVE_DECL_BE16TOH
    655 #define be16toh(x)	htobe16(x)
    656 #endif
    657 #if !HAVE_DECL_BE32TOH
    658 #define be32toh(x)	htobe32(x)
    659 #endif
    660 #if !HAVE_DECL_BE64TOH
    661 #define be64toh(x)	htobe64(x)
    662 #endif
    663 #if !HAVE_DECL_LE16TOH
    664 #define le16toh(x)	htole16(x)
    665 #endif
    666 #if !HAVE_DECL_LE32TOH
    667 #define le32toh(x)	htole32(x)
    668 #endif
    669 #if !HAVE_DECL_LE64TOH
    670 #define le64toh(x)	htole64(x)
    671 #endif
    672 
    673 #define __GEN_ENDIAN_ENC(bits, endian) \
    674 static void \
    675 endian ## bits ## enc(void *dst, uint ## bits ## _t u) \
    676 { \
    677 	u = hto ## endian ## bits (u); \
    678 	memcpy(dst, &u, sizeof(u)); \
    679 }
    680 #if !HAVE_DECL_BE16ENC
    681 __GEN_ENDIAN_ENC(16, be)
    682 #endif
    683 #if !HAVE_DECL_BE32ENC
    684 __GEN_ENDIAN_ENC(32, be)
    685 #endif
    686 #if !HAVE_DECL_BE64ENC
    687 __GEN_ENDIAN_ENC(64, be)
    688 #endif
    689 #if !HAVE_DECL_LE16ENC
    690 __GEN_ENDIAN_ENC(16, le)
    691 #endif
    692 #if !HAVE_DECL_LE32ENC
    693 __GEN_ENDIAN_ENC(32, le)
    694 #endif
    695 #if !HAVE_DECL_LE64ENC
    696 __GEN_ENDIAN_ENC(64, le)
    697 #endif
    698 #undef __GEN_ENDIAN_ENC
    699 
    700 #define __GEN_ENDIAN_DEC(bits, endian) \
    701 static uint ## bits ## _t \
    702 endian ## bits ## dec(const void *buf) \
    703 { \
    704 	uint ## bits ## _t u; \
    705 	memcpy(&u, buf, sizeof(u)); \
    706 	return endian ## bits ## toh (u); \
    707 }
    708 #if !HAVE_DECL_BE16DEC
    709 __GEN_ENDIAN_DEC(16, be)
    710 #endif
    711 #if !HAVE_DECL_BE32DEC
    712 __GEN_ENDIAN_DEC(32, be)
    713 #endif
    714 #if !HAVE_DECL_BE64DEC
    715 __GEN_ENDIAN_DEC(64, be)
    716 #endif
    717 #if !HAVE_DECL_LE16DEC
    718 __GEN_ENDIAN_DEC(16, le)
    719 #endif
    720 #if !HAVE_DECL_LE32DEC
    721 __GEN_ENDIAN_DEC(32, le)
    722 #endif
    723 #if !HAVE_DECL_LE64DEC
    724 __GEN_ENDIAN_DEC(64, le)
    725 #endif
    726 #undef __GEN_ENDIAN_DEC
    727 
    728 /* <sys/mman.h> */
    729 
    730 #ifndef MAP_FILE
    731 #define MAP_FILE 0
    732 #endif
    733 
    734 /* HP-UX has MAP_ANONYMOUS but not MAP_ANON */
    735 #ifndef MAP_ANON
    736 #ifdef MAP_ANONYMOUS
    737 #define MAP_ANON MAP_ANONYMOUS
    738 #endif
    739 #endif
    740 
    741 /* <sys/param.h> */
    742 
    743 #undef BIG_ENDIAN
    744 #undef LITTLE_ENDIAN
    745 #define BIG_ENDIAN 4321
    746 #define LITTLE_ENDIAN 1234
    747 
    748 #undef BYTE_ORDER
    749 #if WORDS_BIGENDIAN
    750 #define BYTE_ORDER BIG_ENDIAN
    751 #else
    752 #define BYTE_ORDER LITTLE_ENDIAN
    753 #endif
    754 
    755 #ifndef DEV_BSIZE
    756 #define DEV_BSIZE (1 << 9)
    757 #endif
    758 
    759 #undef MIN
    760 #undef MAX
    761 #define MIN(a,b) ((a) < (b) ? (a) : (b))
    762 #define MAX(a,b) ((a) > (b) ? (a) : (b))
    763 
    764 #ifndef MAXBSIZE
    765 #define MAXBSIZE (64 * 1024)
    766 #endif
    767 #ifndef MAXFRAG
    768 #define MAXFRAG 8
    769 #endif
    770 #ifndef MAXPHYS
    771 #define MAXPHYS (64 * 1024)
    772 #endif
    773 
    774 /* XXX needed by makefs; this should be done in a better way */
    775 #undef btodb
    776 #define btodb(x) ((x) << 9)
    777 
    778 #undef setbit
    779 #undef clrbit
    780 #undef isset
    781 #undef isclr
    782 #define	setbit(a,i)	((a)[(i)/NBBY] |= 1<<((i)%NBBY))
    783 #define	clrbit(a,i)	((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
    784 #define	isset(a,i)	((a)[(i)/NBBY] & (1<<((i)%NBBY)))
    785 #define	isclr(a,i)	(((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
    786 
    787 #ifndef powerof2
    788 #define powerof2(x) ((((x)-1)&(x))==0)
    789 #endif
    790 
    791 #undef roundup
    792 #define roundup(x, y)	((((x)+((y)-1))/(y))*(y))
    793 
    794 /* <sys/stat.h> */
    795 
    796 #ifndef ALLPERMS
    797 #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
    798 #endif
    799 #ifndef DEFFILEMODE
    800 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
    801 #endif
    802 #ifndef S_ISTXT
    803 #ifdef S_ISVTX
    804 #define S_ISTXT S_ISVTX
    805 #else
    806 #define S_ISTXT 0
    807 #endif
    808 #endif
    809 
    810 /* Protected by _NETBSD_SOURCE otherwise. */
    811 #if HAVE_STRUCT_STAT_ST_FLAGS && defined(__NetBSD__)
    812 #define UF_SETTABLE     0x0000ffff
    813 #define UF_NODUMP       0x00000001
    814 #define UF_IMMUTABLE    0x00000002
    815 #define UF_APPEND       0x00000004
    816 #define UF_OPAQUE       0x00000008
    817 #define SF_SETTABLE     0xffff0000
    818 #define SF_ARCHIVED     0x00010000
    819 #define SF_IMMUTABLE    0x00020000
    820 #define SF_APPEND       0x00040000
    821 #endif
    822 
    823 /* <sys/syslimits.h> */
    824 
    825 #ifndef LINE_MAX
    826 #define LINE_MAX 2048
    827 #endif
    828 
    829 /* <sys/time.h> */
    830 
    831 #ifndef timercmp
    832 #define	timercmp(tvp, uvp, cmp)						\
    833 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
    834 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
    835 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
    836 #endif
    837 #ifndef timeradd
    838 #define	timeradd(tvp, uvp, vvp)						\
    839 	do {								\
    840 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
    841 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
    842 		if ((vvp)->tv_usec >= 1000000) {			\
    843 			(vvp)->tv_sec++;				\
    844 			(vvp)->tv_usec -= 1000000;			\
    845 		}							\
    846 	} while (/* CONSTCOND */ 0)
    847 #endif
    848 #ifndef timersub
    849 #define	timersub(tvp, uvp, vvp)						\
    850 	do {								\
    851 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
    852 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
    853 		if ((vvp)->tv_usec < 0) {				\
    854 			(vvp)->tv_sec--;				\
    855 			(vvp)->tv_usec += 1000000;			\
    856 		}							\
    857 	} while (/* CONSTCOND */ 0)
    858 #endif
    859 
    860 /* <sys/types.h> */
    861 
    862 #ifdef major
    863 #undef major
    864 #endif
    865 #define major(x)        ((int32_t)((((x) & 0x000fff00) >>  8)))
    866 
    867 #ifdef minor
    868 #undef minor
    869 #endif
    870 #define minor(x)        ((int32_t)((((x) & 0xfff00000) >> 12) | \
    871                                    (((x) & 0x000000ff) >>  0)))
    872 #ifdef makedev
    873 #undef makedev
    874 #endif
    875 #define makedev(x,y)    ((dev_t)((((x) <<  8) & 0x000fff00) | \
    876 			(((y) << 12) & 0xfff00000) | \
    877 			(((y) <<  0) & 0x000000ff)))
    878 #ifndef NBBY
    879 #define NBBY 8
    880 #endif
    881 
    882 #if !HAVE_U_QUAD_T
    883 /* #define, not typedef, as quad_t exists as a struct on some systems */
    884 #define quad_t long long
    885 #define u_quad_t unsigned long long
    886 #define strtoq strtoll
    887 #define strtouq strtoull
    888 #endif
    889 
    890 /* Has quad_t but these prototypes don't get pulled into scope. w/o we lose */
    891 #ifdef __NetBSD__
    892 quad_t   strtoq __P((const char *, char **, int));
    893 u_quad_t strtouq __P((const char *, char **, int));
    894 #endif
    895 
    896 #endif	/* !__NETBSD_COMPAT_DEFS_H__ */
    897