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compat_defs.h revision 1.35 
      1 /*	$NetBSD: compat_defs.h,v 1.35 2004/05/18 22:14:35 sjg Exp $	*/
      2 
      3 #ifndef	__NETBSD_COMPAT_DEFS_H__
      4 #define	__NETBSD_COMPAT_DEFS_H__
      5 
      6 /* Work around some complete brain damage. */
      7 
      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 #undef _POSIX_SOURCE
     19 #undef _POSIX_C_SOURCE
     20 
     21 /* System headers needed for (re)definitions below. */
     22 
     23 #include <sys/types.h>
     24 #include <sys/mman.h>
     25 #include <sys/param.h>
     26 #include <sys/stat.h>
     27 #include <sys/time.h>
     28 #include <errno.h>
     29 #include <fcntl.h>
     30 #include <grp.h>
     31 #include <limits.h>
     32 #include <paths.h>
     33 #include <stdarg.h>
     34 #include <stdio.h>
     35 #include <stdlib.h>
     36 #include <string.h>
     37 
     38 #if HAVE_SYS_CDEFS_H
     39 #include <sys/cdefs.h>
     40 #endif
     41 #if HAVE_SYS_SYSLIMITS_H
     42 #include <sys/syslimits.h>
     43 #endif
     44 #if HAVE_SYS_SYSMACROS_H
     45 /* major(), minor() on SVR4 */
     46 #include <sys/sysmacros.h>
     47 #endif
     48 #if HAVE_INTTYPES_H
     49 #include <inttypes.h>
     50 #endif
     51 #if HAVE_STDDEF_H
     52 #include <stddef.h>
     53 #endif
     54 
     55 /* We don't include <pwd.h> here, so that "compat_pwd.h" works. */
     56 struct passwd;
     57 
     58 /* Assume an ANSI compiler for the host. */
     59 
     60 #undef __P
     61 #define __P(x) x
     62 
     63 #ifndef __BEGIN_DECLS
     64 #define __BEGIN_DECLS
     65 #endif
     66 #ifndef __END_DECLS
     67 #define __END_DECLS
     68 #endif
     69 
     70 /* Some things usually in BSD <sys/cdefs.h>. */
     71 
     72 #ifndef __CONCAT
     73 #define	__CONCAT(x,y)	x ## y
     74 #endif
     75 #if !defined(__attribute__) && !defined(__GNUC__)
     76 #define __attribute__(x)
     77 #endif
     78 #if !defined(__packed)
     79 #if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
     80 #define __packed	__attribute__((__packed__))
     81 #else
     82 #define	__packed	error: no __packed for this compiler
     83 #endif
     84 #endif /* !__packed */
     85 #ifndef __RENAME
     86 #define __RENAME(x)
     87 #endif
     88 #undef __aconst
     89 #define __aconst
     90 #undef __dead
     91 #define __dead
     92 #undef __restrict
     93 #define __restrict
     94 
     95 /* Dirent support. */
     96 
     97 #if HAVE_DIRENT_H
     98 # include <dirent.h>
     99 # define NAMLEN(dirent) (strlen((dirent)->d_name))
    100 #else
    101 # define dirent direct
    102 # define NAMLEN(dirent) ((dirent)->d_namlen)
    103 # if HAVE_SYS_NDIR_H
    104 #  include <sys/ndir.h>
    105 # endif
    106 # if HAVE_SYS_DIR_H
    107 #  include <sys/dir.h>
    108 # endif
    109 # if HAVE_NDIR_H
    110 #  include <ndir.h>
    111 # endif
    112 #endif
    113 
    114 /* Type substitutes. */
    115 
    116 #if !HAVE_ID_T
    117 typedef unsigned long id_t;
    118 #endif
    119 
    120 #if !HAVE_SOCKLEN_T
    121 typedef int socklen_t;
    122 #endif
    123 
    124 #if !HAVE_U_LONG
    125 typedef unsigned long u_long;
    126 #endif
    127 
    128 /* Prototypes for replacement functions. */
    129 
    130 #if !HAVE_ATOLL
    131 long long int atoll(const char *);
    132 #endif
    133 
    134 #if !HAVE_ASPRINTF
    135 int asprintf(char **, const char *, ...);
    136 #endif
    137 
    138 #if !HAVE_ASNPRINTF
    139 int asnprintf(char **, size_t, const char *, ...);
    140 #endif
    141 
    142 #if !HAVE_BASENAME
    143 char *basename(char *);
    144 #endif
    145 
    146 #if !HAVE_DECL_OPTIND
    147 int getopt(int, char *const *, const char *);
    148 extern char *optarg;
    149 extern int optind, opterr, optopt;
    150 #endif
    151 
    152 #if !HAVE_DIRNAME
    153 char *dirname(char *);
    154 #endif
    155 
    156 #if !HAVE_DIRFD
    157 #if HAVE_DIR_DD_FD
    158 #define dirfd(dirp) ((dirp)->dd_fd)
    159 #else
    160 #error cannot figure out how to turn a DIR * into a fd
    161 #endif
    162 #endif
    163 
    164 #if !HAVE_ERR_H
    165 void err(int, const char *, ...);
    166 void errx(int, const char *, ...);
    167 void warn(const char *, ...);
    168 void warnx(const char *, ...);
    169 #endif
    170 
    171 #if !HAVE_FGETLN
    172 char *fgetln(FILE *, size_t *);
    173 #endif
    174 
    175 #if !HAVE_FLOCK
    176 # define LOCK_SH		0x01
    177 # define LOCK_EX		0x02
    178 # define LOCK_NB		0x04
    179 # define LOCK_UN		0x08
    180 int flock(int, int);
    181 #endif
    182 
    183 #if !HAVE_FPARSELN
    184 # define FPARSELN_UNESCESC	0x01
    185 # define FPARSELN_UNESCCONT	0x02
    186 # define FPARSELN_UNESCCOMM	0x04
    187 # define FPARSELN_UNESCREST	0x08
    188 # define FPARSELN_UNESCALL	0x0f
    189 char *fparseln(FILE *, size_t *, size_t *, const char [3], int);
    190 #endif
    191 
    192 #if !HAVE_ISSETUGID
    193 int issetugid(void);
    194 #endif
    195 
    196 #if !HAVE_ISBLANK && !defined(isblank)
    197 #define isblank(x) ((x) == ' ' || (x) == '\t')
    198 #endif
    199 
    200 #if !HAVE_LCHFLAGS
    201 int lchflags(const char *, u_long);
    202 #endif
    203 
    204 #if !HAVE_LCHMOD
    205 int lchmod(const char *, mode_t);
    206 #endif
    207 
    208 #if !HAVE_LCHOWN
    209 int lchown(const char *, uid_t, gid_t);
    210 #endif
    211 
    212 #if !HAVE_MACHINE_BSWAP_H
    213 #define bswap16(x)	((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
    214 
    215 #define bswap32(x)	((((x) << 24) & 0xff000000) | \
    216 			 (((x) <<  8) & 0x00ff0000) | \
    217 			 (((x) >>  8) & 0x0000ff00) | \
    218 			 (((x) >> 24) & 0x000000ff))
    219 
    220 #define bswap64(x)	(((u_int64_t)bswap32((x)) << 32) | \
    221 			 ((u_int64_t)bswap32((x) >> 32)))
    222 #endif
    223 
    224 #if !HAVE_MKSTEMP
    225 int mkstemp(char *);
    226 #endif
    227 
    228 #if !HAVE_MKDTEMP
    229 char *mkdtemp(char *);
    230 #endif
    231 
    232 #if !HAVE_MKSTEMP || !HAVE_MKDTEMP
    233 /* This is a prototype for the internal function. */
    234 int gettemp(char *, int *, int);
    235 #endif
    236 
    237 #if !HAVE_PREAD
    238 ssize_t pread(int, void *, size_t, off_t);
    239 #endif
    240 
    241 #if !HAVE_PWCACHE_USERDB
    242 int uid_from_user(const char *, uid_t *);
    243 int pwcache_userdb(int (*)(int), void (*)(void),
    244 		struct passwd * (*)(const char *), struct passwd * (*)(uid_t));
    245 int gid_from_group(const char *, gid_t *);
    246 int pwcache_groupdb(int (*)(int), void (*)(void),
    247 		struct group * (*)(const char *), struct group * (*)(gid_t));
    248 # if HAVE_USER_FROM_UID
    249 /* Make them use our version */
    250 #  define user_from_uid __nbcompat_user_from_uid
    251 #  define group_from_gid __nbcompat_group_from_gid
    252 # endif
    253 #endif
    254 
    255 #if !HAVE_PWRITE
    256 ssize_t pwrite(int, const void *, size_t, off_t);
    257 #endif
    258 
    259 #if !HAVE_SETENV
    260 int setenv(const char *, const char *, int);
    261 #endif
    262 
    263 #if !HAVE_DECL_SETGROUPENT
    264 int setgroupent(int);
    265 #endif
    266 
    267 #if !HAVE_DECL_SETPASSENT
    268 int setpassent(int);
    269 #endif
    270 
    271 #if !HAVE_SETPROGNAME
    272 const char *getprogname(void);
    273 void setprogname(const char *);
    274 #endif
    275 
    276 #if !HAVE_SNPRINTF
    277 int snprintf(char *, size_t, const char *, ...);
    278 #endif
    279 
    280 #if !HAVE_STRLCAT
    281 size_t strlcat(char *, const char *, size_t);
    282 #endif
    283 
    284 #if !HAVE_STRLCPY
    285 size_t strlcpy(char *, const char *, size_t);
    286 #endif
    287 
    288 #if !HAVE_STRSEP
    289 char *strsep(char **, const char *);
    290 #endif
    291 
    292 #if !HAVE_STRSUFTOLL
    293 long long strsuftoll(const char *, const char *, long long, long long);
    294 long long strsuftollx(const char *, const char *,
    295 			long long, long long, char *, size_t);
    296 #endif
    297 
    298 #if !HAVE_STRTOLL
    299 long long strtoll(const char *, char **, int);
    300 #endif
    301 
    302 #if !HAVE_USER_FROM_UID
    303 const char *user_from_uid(uid_t, int);
    304 const char *group_from_gid(gid_t, int);
    305 #endif
    306 
    307 #if !HAVE_VASPRINTF
    308 int vasprintf(char **, const char *, va_list);
    309 #endif
    310 
    311 #if !HAVE_VASNPRINTF
    312 int vasnprintf(char **, size_t, const char *, va_list);
    313 #endif
    314 
    315 #if !HAVE_VSNPRINTF
    316 int vsnprintf(char *, size_t, const char *, va_list);
    317 #endif
    318 
    319 /*
    320  * getmode() and setmode() are always defined, as these function names
    321  * exist but with very different meanings on other OS's.  The compat
    322  * versions here simply accept an octal mode number; the "u+x,g-w" type
    323  * of syntax is not accepted.
    324  */
    325 
    326 #define getmode __nbcompat_getmode
    327 #define setmode __nbcompat_setmode
    328 
    329 mode_t getmode(const void *, mode_t);
    330 void *setmode(const char *);
    331 
    332 /* Eliminate assertions embedded in binaries. */
    333 
    334 #undef _DIAGASSERT
    335 #define _DIAGASSERT(x)
    336 
    337 /* Various sources use this */
    338 #undef	__RCSID
    339 #define	__RCSID(x)
    340 #undef	__SCCSID
    341 #define	__SCCSID(x)
    342 #undef	__COPYRIGHT
    343 #define	__COPYRIGHT(x)
    344 #undef	__KERNEL_RCSID
    345 #define	__KERNEL_RCSID(x,y)
    346 
    347 /* Heimdal expects this one. */
    348 
    349 #undef RCSID
    350 #define RCSID(x)
    351 
    352 /* Some definitions not available on all systems. */
    353 
    354 /* <errno.h> */
    355 
    356 #ifndef EFTYPE
    357 #define EFTYPE EIO
    358 #endif
    359 
    360 /* <fcntl.h> */
    361 
    362 #ifndef O_EXLOCK
    363 #define O_EXLOCK 0
    364 #endif
    365 #ifndef O_SHLOCK
    366 #define O_SHLOCK 0
    367 #endif
    368 
    369 /* <limits.h> */
    370 
    371 #ifndef UID_MAX
    372 #define UID_MAX 32767
    373 #endif
    374 #ifndef GID_MAX
    375 #define GID_MAX UID_MAX
    376 #endif
    377 
    378 #ifndef UQUAD_MAX
    379 #define UQUAD_MAX ((u_quad_t)-1)
    380 #endif
    381 #ifndef QUAD_MAX
    382 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1))
    383 #endif
    384 #ifndef QUAD_MIN
    385 #define QUAD_MIN ((quad_t)(~QUAD_MAX))
    386 #endif
    387 #ifndef ULLONG_MAX
    388 #define ULLONG_MAX ((unsigned long long)-1)
    389 #endif
    390 #ifndef LLONG_MAX
    391 #define LLONG_MAX ((long long)(ULLONG_MAX >> 1))
    392 #endif
    393 #ifndef LLONG_MIN
    394 #define LLONG_MIN ((long long)(~LLONG_MAX))
    395 #endif
    396 
    397 /* <paths.h> */
    398 
    399 #ifndef _PATH_BSHELL
    400 #define _PATH_BSHELL PATH_BSHELL
    401 #endif
    402 #ifndef _PATH_DEFPATH
    403 #define _PATH_DEFPATH "/usr/bin:/bin:/usr/local/bin"
    404 #endif
    405 #ifndef _PATH_DEV
    406 #define _PATH_DEV "/dev/"
    407 #endif
    408 #ifndef _PATH_DEVNULL
    409 #define _PATH_DEVNULL _PATH_DEV "null"
    410 #endif
    411 #ifndef _PATH_TMP
    412 #define _PATH_TMP "/tmp/"
    413 #endif
    414 #ifndef _PATH_DEFTAPE
    415 #define _PATH_DEFTAPE "/dev/nrst0"
    416 #endif
    417 
    418 /* <stdarg.h> */
    419 
    420 #ifndef _BSD_VA_LIST_
    421 #define _BSD_VA_LIST_ va_list
    422 #endif
    423 
    424 /* <stdint.h> */
    425 
    426 #if !defined(SIZE_MAX) && defined(SIZE_T_MAX)
    427 #define SIZE_MAX SIZE_T_MAX
    428 #endif
    429 
    430 #ifndef UINT32_MAX
    431 #define UINT32_MAX 0xffffffffU
    432 #endif
    433 
    434 /* <stdlib.h> */
    435 
    436 #ifndef __GNUC__
    437 # if HAVE_ALLOCA_H
    438 #  include <alloca.h>
    439 # else
    440 #  ifndef alloca /* predefined by HP cc +Olibcalls */
    441 char *alloca ();
    442 #  endif
    443 # endif
    444 #endif
    445 
    446 /* avoid prototype conflicts with host */
    447 #define cgetcap __nbcompat_cgetcap
    448 #define cgetclose __nbcompat_cgetclose
    449 #define cgetent __nbcompat_cgetent
    450 #define cgetfirst __nbcompat_cgetfirst
    451 #define cgetmatch __nbcompat_cgetmatch
    452 #define cgetnext __nbcompat_cgetnext
    453 #define cgetnum __nbcompat_cgetnum
    454 #define cgetset __nbcompat_cgetset
    455 #define cgetstr __nbcompat_cgetstr
    456 #define cgetustr __nbcompat_cgetustr
    457 
    458 char	*cgetcap(char *, const char *, int);
    459 int	 cgetclose(void);
    460 int	 cgetent(char **, const char * const *, const char *);
    461 int	 cgetfirst(char **, const char * const *);
    462 int	 cgetmatch(const char *, const char *);
    463 int	 cgetnext(char **, const char * const *);
    464 int	 cgetnum(char *, const char *, long *);
    465 int	 cgetset(const char *);
    466 int	 cgetstr(char *, const char *, char **);
    467 int	 cgetustr(char *, const char *, char **);
    468 
    469 /* <sys/endian.h> */
    470 
    471 #ifdef HAVE_SYS_ENDIAN_H
    472 #include <sys/endian.h>
    473 #else
    474 #if WORDS_BIGENDIAN
    475 #define htobe16(x)	(x)
    476 #define htobe32(x)	(x)
    477 #define htobe64(x)	(x)
    478 #define htole16(x)	bswap16((u_int16_t)(x))
    479 #define htole32(x)	bswap32((u_int32_t)(x))
    480 #define htole64(x)	bswap64((u_int64_t)(x))
    481 #else
    482 #define htobe16(x)	bswap16((u_int16_t)(x))
    483 #define htobe32(x)	bswap32((u_int32_t)(x))
    484 #define htobe64(x)	bswap64((u_int64_t)(x))
    485 #define htole16(x)	(x)
    486 #define htole32(x)	(x)
    487 #define htole64(x)	(x)
    488 #endif
    489 #define be16toh(x)	htobe16(x)
    490 #define be32toh(x)	htobe32(x)
    491 #define be64toh(x)	htobe64(x)
    492 #define le16toh(x)	htole16(x)
    493 #define le32toh(x)	htole32(x)
    494 #define le64toh(x)	htole64(x)
    495 #endif
    496 
    497 /* <sys/mman.h> */
    498 
    499 #ifndef MAP_FILE
    500 #define MAP_FILE 0
    501 #endif
    502 
    503 /* HP-UX has MAP_ANONYMOUS but not MAP_ANON */
    504 #ifndef MAP_ANON
    505 #ifdef MAP_ANONYMOUS
    506 #define MAP_ANON MAP_ANONYMOUS
    507 #endif
    508 #endif
    509 
    510 /* <sys/param.h> */
    511 
    512 #undef BIG_ENDIAN
    513 #undef LITTLE_ENDIAN
    514 #define BIG_ENDIAN 4321
    515 #define LITTLE_ENDIAN 1234
    516 
    517 #undef BYTE_ORDER
    518 #if WORDS_BIGENDIAN
    519 #define BYTE_ORDER BIG_ENDIAN
    520 #else
    521 #define BYTE_ORDER LITTLE_ENDIAN
    522 #endif
    523 
    524 #ifndef DEV_BSIZE
    525 #define DEV_BSIZE (1 << 9)
    526 #endif
    527 
    528 #undef MIN
    529 #undef MAX
    530 #define MIN(a,b) ((a) < (b) ? (a) : (b))
    531 #define MAX(a,b) ((a) > (b) ? (a) : (b))
    532 
    533 #ifndef MAXBSIZE
    534 #define MAXBSIZE (64 * 1024)
    535 #endif
    536 #ifndef MAXFRAG
    537 #define MAXFRAG 8
    538 #endif
    539 #ifndef MAXPHYS
    540 #define MAXPHYS (64 * 1024)
    541 #endif
    542 
    543 /* XXX needed by makefs; this should be done in a better way */
    544 #undef btodb
    545 #define btodb(x) ((x) << 9)
    546 
    547 #undef setbit
    548 #undef clrbit
    549 #undef isset
    550 #undef isclr
    551 #define	setbit(a,i)	((a)[(i)/NBBY] |= 1<<((i)%NBBY))
    552 #define	clrbit(a,i)	((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
    553 #define	isset(a,i)	((a)[(i)/NBBY] & (1<<((i)%NBBY)))
    554 #define	isclr(a,i)	(((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
    555 
    556 #ifndef powerof2
    557 #define powerof2(x) ((((x)-1)&(x))==0)
    558 #endif
    559 
    560 #undef roundup
    561 #define roundup(x, y)	((((x)+((y)-1))/(y))*(y))
    562 
    563 /* <sys/stat.h> */
    564 
    565 #ifndef ALLPERMS
    566 #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
    567 #endif
    568 #ifndef DEFFILEMODE
    569 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
    570 #endif
    571 #ifndef S_ISTXT
    572 #ifdef S_ISVTX
    573 #define S_ISTXT S_ISVTX
    574 #else
    575 #define S_ISTXT 0
    576 #endif
    577 #endif
    578 
    579 /* <sys/syslimits.h> */
    580 
    581 #ifndef LINE_MAX
    582 #define LINE_MAX 2048
    583 #endif
    584 
    585 /* <sys/time.h> */
    586 
    587 #ifndef timercmp
    588 #define	timercmp(tvp, uvp, cmp)						\
    589 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
    590 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
    591 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
    592 #endif
    593 #ifndef timeradd
    594 #define	timeradd(tvp, uvp, vvp)						\
    595 	do {								\
    596 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
    597 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
    598 		if ((vvp)->tv_usec >= 1000000) {			\
    599 			(vvp)->tv_sec++;				\
    600 			(vvp)->tv_usec -= 1000000;			\
    601 		}							\
    602 	} while (/* CONSTCOND */ 0)
    603 #endif
    604 #ifndef timersub
    605 #define	timersub(tvp, uvp, vvp)						\
    606 	do {								\
    607 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
    608 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
    609 		if ((vvp)->tv_usec < 0) {				\
    610 			(vvp)->tv_sec--;				\
    611 			(vvp)->tv_usec += 1000000;			\
    612 		}							\
    613 	} while (/* CONSTCOND */ 0)
    614 #endif
    615 
    616 /* <sys/types.h> */
    617 
    618 #if !HAVE_U_QUAD_T
    619 /* #define, not typedef, as quad_t exists as a struct on some systems */
    620 #define quad_t long long
    621 #define u_quad_t unsigned long long
    622 #define strtoq strtoll
    623 #define strtouq strtoull
    624 #endif
    625 
    626 #endif	/* !__NETBSD_COMPAT_DEFS_H__ */
    627