compat_defs.h revision 1.14 1 /* $NetBSD: compat_defs.h,v 1.14 2002/04/23 00:13:50 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 #if defined(__sun)
327 /* Sun's /bin/sh is obnoxiously broken. */
328 #define _PATH_BSHELL "/usr/xpg4/bin/sh"
329 #else
330 #define _PATH_BSHELL "/bin/sh"
331 #endif
332 #endif
333 #ifndef _PATH_DEFPATH
334 #define _PATH_DEFPATH "/usr/bin:/bin:/usr/local/bin"
335 #endif
336 #ifndef _PATH_DEV
337 #define _PATH_DEV "/dev/"
338 #endif
339 #ifndef _PATH_DEVNULL
340 #define _PATH_DEVNULL _PATH_DEV "null"
341 #endif
342 #ifndef _PATH_TMP
343 #define _PATH_TMP "/tmp/"
344 #endif
345
346 /* <stdarg.h> */
347
348 #ifndef _BSD_VA_LIST_
349 #define _BSD_VA_LIST_ va_list
350 #endif
351
352 /* <stdint.h> */
353
354 #ifndef UINT32_MAX
355 #define UINT32_MAX 0xffffffffU
356 #endif
357
358 /* <stdlib.h> */
359
360 #ifndef __GNUC__
361 # if HAVE_ALLOCA_H
362 # include <alloca.h>
363 # else
364 # ifndef alloca /* predefined by HP cc +Olibcalls */
365 char *alloca ();
366 # endif
367 # endif
368 #endif
369
370 /* <sys/endian.h> */
371
372 #ifndef HAVE_SYS_ENDIAN_H
373 #if WORDS_BIGENDIAN
374 #define htobe16(x) (x)
375 #define htobe32(x) (x)
376 #define htobe64(x) (x)
377 #define htole16(x) bswap16((u_int16_t)(x))
378 #define htole32(x) bswap32((u_int32_t)(x))
379 #define htole64(x) bswap64((u_int64_t)(x))
380 #else
381 #define htobe16(x) bswap16((u_int16_t)(x))
382 #define htobe32(x) bswap32((u_int32_t)(x))
383 #define htobe64(x) bswap64((u_int64_t)(x))
384 #define htole16(x) (x)
385 #define htole32(x) (x)
386 #define htole64(x) (x)
387 #endif
388 #define be16toh(x) htobe16(x)
389 #define be32toh(x) htobe32(x)
390 #define be64toh(x) htobe64(x)
391 #define le16toh(x) htole16(x)
392 #define le32toh(x) htole32(x)
393 #define le64toh(x) htole64(x)
394 #endif
395
396 /* <sys/mman.h> */
397
398 #ifndef MAP_FILE
399 #define MAP_FILE 0
400 #endif
401
402 /* <sys/param.h> */
403
404 #undef BIG_ENDIAN
405 #undef LITTLE_ENDIAN
406 #define BIG_ENDIAN 4321
407 #define LITTLE_ENDIAN 1234
408
409 #undef BYTE_ORDER
410 #if WORDS_BIGENDIAN
411 #define BYTE_ORDER BIG_ENDIAN
412 #else
413 #define BYTE_ORDER LITTLE_ENDIAN
414 #endif
415
416 #ifndef DEV_BSIZE
417 #define DEV_BSIZE (1 << 9)
418 #endif
419
420 #undef MIN
421 #undef MAX
422 #define MIN(a,b) ((a) < (b) ? (a) : (b))
423 #define MAX(a,b) ((a) > (b) ? (a) : (b))
424
425 #ifndef MAXBSIZE
426 #define MAXBSIZE (64 * 1024)
427 #endif
428 #ifndef MAXFRAG
429 #define MAXFRAG 8
430 #endif
431 #ifndef MAXPHYS
432 #define MAXPHYS (64 * 1024)
433 #endif
434
435 /* XXX needed by makefs; this should be done in a better way */
436 #undef btodb
437 #define btodb(x) ((x) << 9)
438
439 #undef setbit
440 #undef clrbit
441 #undef isset
442 #undef isclr
443 #define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
444 #define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
445 #define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
446 #define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
447
448 #ifndef powerof2
449 #define powerof2(x) ((((x)-1)&(x))==0)
450 #endif
451
452 #undef roundup
453 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
454
455 /* <sys/stat.h> */
456
457 #ifndef ALLPERMS
458 #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
459 #endif
460 #ifndef DEFFILEMODE
461 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
462 #endif
463 #ifndef S_ISTXT
464 #ifdef S_ISVTX
465 #define S_ISTXT S_ISVTX
466 #else
467 #define S_ISTXT 0
468 #endif
469 #endif
470
471 /* <sys/syslimits.h> */
472
473 #ifndef LINE_MAX
474 #define LINE_MAX 2048
475 #endif
476
477 /* <sys/time.h> */
478
479 #ifndef timercmp
480 #define timercmp(tvp, uvp, cmp) \
481 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
482 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
483 ((tvp)->tv_sec cmp (uvp)->tv_sec))
484 #endif
485 #ifndef timeradd
486 #define timeradd(tvp, uvp, vvp) \
487 do { \
488 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
489 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
490 if ((vvp)->tv_usec >= 1000000) { \
491 (vvp)->tv_sec++; \
492 (vvp)->tv_usec -= 1000000; \
493 } \
494 } while (/* CONSTCOND */ 0)
495 #endif
496 #ifndef timersub
497 #define timersub(tvp, uvp, vvp) \
498 do { \
499 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
500 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
501 if ((vvp)->tv_usec < 0) { \
502 (vvp)->tv_sec--; \
503 (vvp)->tv_usec += 1000000; \
504 } \
505 } while (/* CONSTCOND */ 0)
506 #endif
507
508 /* <sys/types.h> */
509
510 #if !HAVE_U_QUAD_T
511 /* #define, not typedef, as quad_t exists as a struct on some systems */
512 #define quad_t long long
513 #define u_quad_t unsigned long long
514 #define strtouq strtoull
515 #endif
516
517 #endif /* !__NETBSD_COMPAT_DEFS_H__ */
518