xref: /netbsd/tools/compat/compat_defs.h (revision bf9ec67e)
1 /*	$NetBSD: compat_defs.h,v 1.15 2002/04/24 19:41:58 bjh21 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 #ifndef __RENAME
79 #define __RENAME(x)
80 #endif
81 #undef __aconst
82 #define __aconst
83 #undef __dead
84 #define __dead
85 
86 /* Dirent support. */
87 
88 #if HAVE_DIRENT_H
89 # include <dirent.h>
90 # define NAMLEN(dirent) (strlen((dirent)->d_name))
91 #else
92 # define dirent direct
93 # define NAMLEN(dirent) ((dirent)->d_namlen)
94 # if HAVE_SYS_NDIR_H
95 #  include <sys/ndir.h>
96 # endif
97 # if HAVE_SYS_DIR_H
98 #  include <sys/dir.h>
99 # endif
100 # if HAVE_NDIR_H
101 #  include <ndir.h>
102 # endif
103 #endif
104 
105 /* Type substitutes. */
106 
107 #if !HAVE_ID_T
108 typedef unsigned long id_t;
109 #endif
110 
111 /* Prototypes for replacement functions. */
112 
113 #if !HAVE_ASPRINTF
114 int asprintf(char **, const char *, ...);
115 #endif
116 
117 #if !HAVE_ASNPRINTF
118 int asnprintf(char **, size_t, const char *, ...);
119 #endif
120 
121 #if !HAVE_BASENAME
122 char *basename(char *);
123 #endif
124 
125 #if !HAVE_DECL_OPTIND
126 int getopt(int, char *const *, const char *);
127 extern char *optarg;
128 extern int optind, opterr, optopt;
129 #endif
130 
131 #if !HAVE_DIRNAME
132 char *dirname(char *);
133 #endif
134 
135 #if !HAVE_DIRFD
136 #if HAVE_DIR_DD_FD
137 #define dirfd(dirp) ((dirp)->dd_fd)
138 #else
139 #error cannot figure out how to turn a DIR * into a fd
140 #endif
141 #endif
142 
143 #if !HAVE_ERR_H
144 void err(int, const char *, ...);
145 void errx(int, const char *, ...);
146 void warn(const char *, ...);
147 void warnx(const char *, ...);
148 #endif
149 
150 #if !HAVE_FGETLN
151 char *fgetln(FILE *, size_t *);
152 #endif
153 
154 #if !HAVE_FLOCK
155 # define LOCK_SH		0x01
156 # define LOCK_EX		0x02
157 # define LOCK_NB		0x04
158 # define LOCK_UN		0x08
159 int flock(int, int);
160 #endif
161 
162 #if !HAVE_FPARSELN
163 # define FPARSELN_UNESCESC	0x01
164 # define FPARSELN_UNESCCONT	0x02
165 # define FPARSELN_UNESCCOMM	0x04
166 # define FPARSELN_UNESCREST	0x08
167 # define FPARSELN_UNESCALL	0x0f
168 char *fparseln(FILE *, size_t *, size_t *, const char [3], int);
169 #endif
170 
171 #if !HAVE_ISSETUGID
172 int issetugid(void);
173 #endif
174 
175 #if !HAVE_ISBLANK && !defined(isblank)
176 #define isblank(x) ((x) == ' ' || (x) == '\t')
177 #endif
178 
179 #if !HAVE_MACHINE_BSWAP_H
180 #define bswap16(x)	((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
181 
182 #define bswap32(x)	((((x) << 24) & 0xff000000) | \
183 			 (((x) <<  8) & 0x00ff0000) | \
184 			 (((x) >>  8) & 0x0000ff00) | \
185 			 (((x) >> 24) & 0x000000ff))
186 
187 #define bswap64(x)	(((u_int64_t)bswap32((x)) << 32) | \
188 			 ((u_int64_t)bswap32((x) >> 32)))
189 #endif
190 
191 #if !HAVE_PREAD
192 ssize_t pread(int, void *, size_t, off_t);
193 #endif
194 
195 #if !HAVE_PWCACHE_USERDB
196 const char *user_from_uid(uid_t, int);
197 int uid_from_user(const char *, uid_t *);
198 int pwcache_userdb(int (*)(int), void (*)(void),
199 		struct passwd * (*)(const char *), struct passwd * (*)(uid_t));
200 const char *group_from_gid(gid_t, int);
201 int gid_from_group(const char *, gid_t *);
202 int pwcache_groupdb(int (*)(int), void (*)(void),
203 		struct group * (*)(const char *), struct group * (*)(gid_t));
204 #endif
205 
206 #if !HAVE_PWRITE
207 ssize_t pwrite(int, const void *, size_t, off_t);
208 #endif
209 
210 #if !HAVE_SETENV
211 int setenv(const char *, const char *, int);
212 #endif
213 
214 #if !HAVE_DECL_SETGROUPENT
215 int setgroupent(int);
216 #endif
217 
218 #if !HAVE_DECL_SETPASSENT
219 int setpassent(int);
220 #endif
221 
222 #if !HAVE_SETPROGNAME
223 const char *getprogname(void);
224 void setprogname(const char *);
225 #endif
226 
227 #if !HAVE_SNPRINTF
228 int snprintf(char *, size_t, const char *, ...);
229 #endif
230 
231 #if !HAVE_STRLCAT
232 size_t strlcat(char *, const char *, size_t);
233 #endif
234 
235 #if !HAVE_STRLCPY
236 size_t strlcpy(char *, const char *, size_t);
237 #endif
238 
239 #if !HAVE_STRSEP
240 char *strsep(char **, const char *);
241 #endif
242 
243 #if !HAVE_VASPRINTF
244 int vasprintf(char **, const char *, va_list);
245 #endif
246 
247 #if !HAVE_VASNPRINTF
248 int vasnprintf(char **, size_t, const char *, va_list);
249 #endif
250 
251 #if !HAVE_VSNPRINTF
252 int vsnprintf(char *, size_t, const char *, va_list);
253 #endif
254 
255 /*
256  * getmode() and setmode() are always defined, as these function names
257  * exist but with very different meanings on other OS's.  The compat
258  * versions here simply accept an octal mode number; the "u+x,g-w" type
259  * of syntax is not accepted.
260  */
261 
262 #define getmode __nbcompat_getmode
263 #define setmode __nbcompat_setmode
264 
265 mode_t getmode(const void *, mode_t);
266 void *setmode(const char *);
267 
268 /* Eliminate assertions embedded in binaries. */
269 
270 #undef _DIAGASSERT
271 #define _DIAGASSERT(x)
272 
273 /* Heimdal expects this one. */
274 
275 #undef RCSID
276 #define RCSID(x)
277 
278 /* Some definitions not available on all systems. */
279 
280 /* <errno.h> */
281 
282 #ifndef EFTYPE
283 #define EFTYPE EIO
284 #endif
285 
286 /* <fcntl.h> */
287 
288 #ifndef O_EXLOCK
289 #define O_EXLOCK 0
290 #endif
291 #ifndef O_SHLOCK
292 #define O_SHLOCK 0
293 #endif
294 
295 /* <limits.h> */
296 
297 #ifndef UID_MAX
298 #define UID_MAX 32767
299 #endif
300 #ifndef GID_MAX
301 #define GID_MAX UID_MAX
302 #endif
303 
304 #ifndef UQUAD_MAX
305 #define UQUAD_MAX ((u_quad_t)-1)
306 #endif
307 #ifndef QUAD_MAX
308 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1))
309 #endif
310 #ifndef QUAD_MIN
311 #define QUAD_MIN ((quad_t)(~QUAD_MAX))
312 #endif
313 #ifndef ULLONG_MAX
314 #define ULLONG_MAX ((unsigned long long)-1)
315 #endif
316 #ifndef LLONG_MAX
317 #define LLONG_MAX ((long long)(ULLONG_MAX >> 1))
318 #endif
319 #ifndef LLONG_MIN
320 #define LLONG_MIN ((long long)(~LLONG_MAX))
321 #endif
322 
323 /* <paths.h> */
324 
325 #ifndef _PATH_BSHELL
326 #define _PATH_BSHELL PATH_BSHELL
327 #endif
328 #ifndef _PATH_DEFPATH
329 #define _PATH_DEFPATH "/usr/bin:/bin:/usr/local/bin"
330 #endif
331 #ifndef _PATH_DEV
332 #define _PATH_DEV "/dev/"
333 #endif
334 #ifndef _PATH_DEVNULL
335 #define _PATH_DEVNULL _PATH_DEV "null"
336 #endif
337 #ifndef _PATH_TMP
338 #define _PATH_TMP "/tmp/"
339 #endif
340 
341 /* <stdarg.h> */
342 
343 #ifndef _BSD_VA_LIST_
344 #define _BSD_VA_LIST_ va_list
345 #endif
346 
347 /* <stdint.h> */
348 
349 #ifndef UINT32_MAX
350 #define UINT32_MAX 0xffffffffU
351 #endif
352 
353 /* <stdlib.h> */
354 
355 #ifndef __GNUC__
356 # if HAVE_ALLOCA_H
357 #  include <alloca.h>
358 # else
359 #  ifndef alloca /* predefined by HP cc +Olibcalls */
360 char *alloca ();
361 #  endif
362 # endif
363 #endif
364 
365 /* <sys/endian.h> */
366 
367 #ifndef HAVE_SYS_ENDIAN_H
368 #if WORDS_BIGENDIAN
369 #define htobe16(x)	(x)
370 #define htobe32(x)	(x)
371 #define htobe64(x)	(x)
372 #define htole16(x)	bswap16((u_int16_t)(x))
373 #define htole32(x)	bswap32((u_int32_t)(x))
374 #define htole64(x)	bswap64((u_int64_t)(x))
375 #else
376 #define htobe16(x)	bswap16((u_int16_t)(x))
377 #define htobe32(x)	bswap32((u_int32_t)(x))
378 #define htobe64(x)	bswap64((u_int64_t)(x))
379 #define htole16(x)	(x)
380 #define htole32(x)	(x)
381 #define htole64(x)	(x)
382 #endif
383 #define be16toh(x)	htobe16(x)
384 #define be32toh(x)	htobe32(x)
385 #define be64toh(x)	htobe64(x)
386 #define le16toh(x)	htole16(x)
387 #define le32toh(x)	htole32(x)
388 #define le64toh(x)	htole64(x)
389 #endif
390 
391 /* <sys/mman.h> */
392 
393 #ifndef MAP_FILE
394 #define MAP_FILE 0
395 #endif
396 
397 /* <sys/param.h> */
398 
399 #undef BIG_ENDIAN
400 #undef LITTLE_ENDIAN
401 #define BIG_ENDIAN 4321
402 #define LITTLE_ENDIAN 1234
403 
404 #undef BYTE_ORDER
405 #if WORDS_BIGENDIAN
406 #define BYTE_ORDER BIG_ENDIAN
407 #else
408 #define BYTE_ORDER LITTLE_ENDIAN
409 #endif
410 
411 #ifndef DEV_BSIZE
412 #define DEV_BSIZE (1 << 9)
413 #endif
414 
415 #undef MIN
416 #undef MAX
417 #define MIN(a,b) ((a) < (b) ? (a) : (b))
418 #define MAX(a,b) ((a) > (b) ? (a) : (b))
419 
420 #ifndef MAXBSIZE
421 #define MAXBSIZE (64 * 1024)
422 #endif
423 #ifndef MAXFRAG
424 #define MAXFRAG 8
425 #endif
426 #ifndef MAXPHYS
427 #define MAXPHYS (64 * 1024)
428 #endif
429 
430 /* XXX needed by makefs; this should be done in a better way */
431 #undef btodb
432 #define btodb(x) ((x) << 9)
433 
434 #undef setbit
435 #undef clrbit
436 #undef isset
437 #undef isclr
438 #define	setbit(a,i)	((a)[(i)/NBBY] |= 1<<((i)%NBBY))
439 #define	clrbit(a,i)	((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
440 #define	isset(a,i)	((a)[(i)/NBBY] & (1<<((i)%NBBY)))
441 #define	isclr(a,i)	(((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
442 
443 #ifndef powerof2
444 #define powerof2(x) ((((x)-1)&(x))==0)
445 #endif
446 
447 #undef roundup
448 #define roundup(x, y)	((((x)+((y)-1))/(y))*(y))
449 
450 /* <sys/stat.h> */
451 
452 #ifndef ALLPERMS
453 #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
454 #endif
455 #ifndef DEFFILEMODE
456 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
457 #endif
458 #ifndef S_ISTXT
459 #ifdef S_ISVTX
460 #define S_ISTXT S_ISVTX
461 #else
462 #define S_ISTXT 0
463 #endif
464 #endif
465 
466 /* <sys/syslimits.h> */
467 
468 #ifndef LINE_MAX
469 #define LINE_MAX 2048
470 #endif
471 
472 /* <sys/time.h> */
473 
474 #ifndef timercmp
475 #define	timercmp(tvp, uvp, cmp)						\
476 	(((tvp)->tv_sec == (uvp)->tv_sec) ?				\
477 	    ((tvp)->tv_usec cmp (uvp)->tv_usec) :			\
478 	    ((tvp)->tv_sec cmp (uvp)->tv_sec))
479 #endif
480 #ifndef timeradd
481 #define	timeradd(tvp, uvp, vvp)						\
482 	do {								\
483 		(vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec;		\
484 		(vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec;	\
485 		if ((vvp)->tv_usec >= 1000000) {			\
486 			(vvp)->tv_sec++;				\
487 			(vvp)->tv_usec -= 1000000;			\
488 		}							\
489 	} while (/* CONSTCOND */ 0)
490 #endif
491 #ifndef timersub
492 #define	timersub(tvp, uvp, vvp)						\
493 	do {								\
494 		(vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;		\
495 		(vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;	\
496 		if ((vvp)->tv_usec < 0) {				\
497 			(vvp)->tv_sec--;				\
498 			(vvp)->tv_usec += 1000000;			\
499 		}							\
500 	} while (/* CONSTCOND */ 0)
501 #endif
502 
503 /* <sys/types.h> */
504 
505 #if !HAVE_U_QUAD_T
506 /* #define, not typedef, as quad_t exists as a struct on some systems */
507 #define quad_t long long
508 #define u_quad_t unsigned long long
509 #define strtouq strtoull
510 #endif
511 
512 #endif	/* !__NETBSD_COMPAT_DEFS_H__ */
513