compat_defs.h revision 1.8 1 /* $NetBSD: compat_defs.h,v 1.8 2002/04/04 17:28:33 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 #if !defined(__attribute__) && !defined(__GNUC__)
73 #define __attribute__(x)
74 #endif
75 #ifndef __RENAME
76 #define __RENAME(x)
77 #endif
78 #undef __aconst
79 #define __aconst
80 #undef __dead
81 #define __dead
82
83 /* Dirent support. */
84
85 #if HAVE_DIRENT_H
86 # include <dirent.h>
87 # define NAMLEN(dirent) (strlen((dirent)->d_name))
88 #else
89 # define dirent direct
90 # define NAMLEN(dirent) ((dirent)->d_namlen)
91 # if HAVE_SYS_NDIR_H
92 # include <sys/ndir.h>
93 # endif
94 # if HAVE_SYS_DIR_H
95 # include <sys/dir.h>
96 # endif
97 # if HAVE_NDIR_H
98 # include <ndir.h>
99 # endif
100 #endif
101
102 /* Type substitutes. */
103
104 #if !HAVE_ID_T
105 typedef unsigned long id_t;
106 #endif
107
108 /* Prototypes for replacement functions. */
109
110 #if !HAVE_ASPRINTF
111 int asprintf(char **, const char *, ...);
112 #endif
113
114 #if !HAVE_ASNPRINTF
115 int asnprintf(char **, size_t, const char *, ...);
116 #endif
117
118 #if !HAVE_BASENAME
119 char *basename(char *);
120 #endif
121
122 #if !HAVE_DECL_OPTIND
123 int getopt(int, char *const *, const char *);
124 extern char *optarg;
125 extern int optind, opterr, optopt;
126 #endif
127
128 #if !HAVE_DIRNAME
129 char *dirname(char *);
130 #endif
131
132 #if !HAVE_DIRFD
133 #if HAVE_DIR_DD_FD
134 #define dirfd(dirp) ((dirp)->dd_fd)
135 #else
136 #error cannot figure out how to turn a DIR * into a fd
137 #endif
138 #endif
139
140 #if !HAVE_ERR_H
141 void err(int, const char *, ...);
142 void errx(int, const char *, ...);
143 void warn(const char *, ...);
144 void warnx(const char *, ...);
145 #endif
146
147 #if !HAVE_FGETLN
148 char *fgetln(FILE *, size_t *);
149 #endif
150
151 #if !HAVE_FLOCK
152 # define LOCK_SH 0x01
153 # define LOCK_EX 0x02
154 # define LOCK_NB 0x04
155 # define LOCK_UN 0x08
156 int flock(int, int);
157 #endif
158
159 #if !HAVE_FPARSELN
160 # define FPARSELN_UNESCESC 0x01
161 # define FPARSELN_UNESCCONT 0x02
162 # define FPARSELN_UNESCCOMM 0x04
163 # define FPARSELN_UNESCREST 0x08
164 # define FPARSELN_UNESCALL 0x0f
165 char *fparseln(FILE *, size_t *, size_t *, const char [3], int);
166 #endif
167
168 #if !HAVE_ISBLANK && !defined(isblank)
169 #define isblank(x) ((x) == ' ' || (x) == '\t')
170 #endif
171
172 #if !HAVE_MACHINE_BSWAP_H
173 #define bswap16(x) ((((x) << 8) & 0xff00) | (((x) >> 8) & 0x00ff))
174
175 #define bswap32(x) ((((x) << 24) & 0xff000000) | \
176 (((x) << 8) & 0x00ff0000) | \
177 (((x) >> 8) & 0x0000ff00) | \
178 (((x) >> 24) & 0x000000ff))
179
180 #define bswap64(x) (((u_int64_t)bswap32((x)) << 32) | \
181 ((u_int64_t)bswap32((x) >> 32)))
182 #endif
183
184 #if !HAVE_PREAD
185 ssize_t pread(int, void *, size_t, off_t);
186 #endif
187
188 #if !HAVE_PWCACHE_USERDB
189 const char *user_from_uid(uid_t, int);
190 int uid_from_user(const char *, uid_t *);
191 int pwcache_userdb(int (*)(int), void (*)(void),
192 struct passwd * (*)(const char *), struct passwd * (*)(uid_t));
193 const char *group_from_gid(gid_t, int);
194 int gid_from_group(const char *, gid_t *);
195 int pwcache_groupdb(int (*)(int), void (*)(void),
196 struct group * (*)(const char *), struct group * (*)(gid_t));
197 #endif
198
199 #if !HAVE_PWRITE
200 ssize_t pwrite(int, const void *, size_t, off_t);
201 #endif
202
203 #if !HAVE_SETENV
204 int setenv(const char *, const char *, int);
205 #endif
206
207 #if !HAVE_DECL_SETGROUPENT
208 int setgroupent(int);
209 #endif
210
211 #if !HAVE_DECL_SETPASSENT
212 int setpassent(int);
213 #endif
214
215 #if !HAVE_SETPROGNAME
216 const char *getprogname(void);
217 void setprogname(const char *);
218 #endif
219
220 #if !HAVE_SNPRINTF
221 int snprintf(char *, size_t, const char *, ...);
222 #endif
223
224 #if !HAVE_STRLCAT
225 size_t strlcat(char *, const char *, size_t);
226 #endif
227
228 #if !HAVE_STRLCPY
229 size_t strlcpy(char *, const char *, size_t);
230 #endif
231
232 #if !HAVE_STRSEP
233 char *strsep(char **, const char *);
234 #endif
235
236 #if !HAVE_VASPRINTF
237 int vasprintf(char **, const char *, va_list);
238 #endif
239
240 #if !HAVE_VASNPRINTF
241 int vasnprintf(char **, size_t, const char *, va_list);
242 #endif
243
244 #if !HAVE_VSNPRINTF
245 int vsnprintf(char *, size_t, const char *, va_list);
246 #endif
247
248 /*
249 * getmode() and setmode() are always defined, as these function names
250 * exist but with very different meanings on other OS's. The compat
251 * versions here simply accept an octal mode number; the "u+x,g-w" type
252 * of syntax is not accepted.
253 */
254
255 #define getmode __nbcompat_getmode
256 #define setmode __nbcompat_setmode
257
258 mode_t getmode(const void *, mode_t);
259 void *setmode(const char *);
260
261 /* Eliminate assertions embedded in binaries. */
262
263 #undef _DIAGASSERT
264 #define _DIAGASSERT(x)
265
266 /* Heimdal expects this one. */
267
268 #undef RCSID
269 #define RCSID(x)
270
271 /* Some definitions not available on all systems. */
272
273 /* <errno.h> */
274
275 #ifndef EFTYPE
276 #define EFTYPE EIO
277 #endif
278
279 /* <fcntl.h> */
280
281 #ifndef O_EXLOCK
282 #define O_EXLOCK 0
283 #endif
284 #ifndef O_SHLOCK
285 #define O_SHLOCK 0
286 #endif
287
288 /* <limits.h> */
289
290 #ifndef UID_MAX
291 #define UID_MAX 32767
292 #endif
293 #ifndef GID_MAX
294 #define GID_MAX UID_MAX
295 #endif
296
297 #ifndef UQUAD_MAX
298 #define UQUAD_MAX ((u_quad_t)-1)
299 #endif
300 #ifndef QUAD_MAX
301 #define QUAD_MAX ((quad_t)(UQUAD_MAX >> 1))
302 #endif
303 #ifndef QUAD_MIN
304 #define QUAD_MIN ((quad_t)(~QUAD_MAX))
305 #endif
306 #ifndef ULLONG_MAX
307 #define ULLONG_MAX ((unsigned long long)-1)
308 #endif
309 #ifndef LLONG_MAX
310 #define LLONG_MAX ((long long)(ULLONG_MAX >> 1))
311 #endif
312 #ifndef LLONG_MIN
313 #define LLONG_MIN ((long long)(~LLONG_MAX))
314 #endif
315
316 /* <paths.h> */
317
318 #ifndef _PATH_BSHELL
319 #if defined(__sun)
320 /* Sun's /bin/sh is obnoxiously broken. */
321 #define _PATH_BSHELL "/usr/xpg4/bin/sh"
322 #else
323 #define _PATH_BSHELL "/bin/sh"
324 #endif
325 #endif
326 #ifndef _PATH_DEFPATH
327 #define _PATH_DEFPATH "/usr/bin:/bin:/usr/local/bin"
328 #endif
329 #ifndef _PATH_DEV
330 #define _PATH_DEV "/dev/"
331 #endif
332 #ifndef _PATH_DEVNULL
333 #define _PATH_DEVNULL _PATH_DEV "null"
334 #endif
335 #ifndef _PATH_TMP
336 #define _PATH_TMP "/tmp/"
337 #endif
338
339 /* <stdarg.h> */
340
341 #ifndef _BSD_VA_LIST_
342 #define _BSD_VA_LIST_ va_list
343 #endif
344
345 /* <sys/mman.h> */
346
347 #ifndef MAP_FILE
348 #define MAP_FILE 0
349 #endif
350
351 /* <sys/param.h> */
352
353 #undef BIG_ENDIAN
354 #undef LITTLE_ENDIAN
355 #define BIG_ENDIAN 4321
356 #define LITTLE_ENDIAN 1234
357
358 #undef BYTE_ORDER
359 #if WORDS_BIGENDIAN
360 #define BYTE_ORDER BIG_ENDIAN
361 #else
362 #define BYTE_ORDER LITTLE_ENDIAN
363 #endif
364
365 #ifndef DEV_BSIZE
366 #define DEV_BSIZE (1 << 9)
367 #endif
368
369 #undef MIN
370 #undef MAX
371 #define MIN(a,b) ((a) < (b) ? (a) : (b))
372 #define MAX(a,b) ((a) > (b) ? (a) : (b))
373
374 #ifndef MAXBSIZE
375 #define MAXBSIZE (64 * 1024)
376 #endif
377 #ifndef MAXFRAG
378 #define MAXFRAG 8
379 #endif
380 #ifndef MAXPHYS
381 #define MAXPHYS (64 * 1024)
382 #endif
383
384 /* XXX needed by makefs; this should be done in a better way */
385 #undef btodb
386 #define btodb(x) ((x) << 9)
387
388 #undef setbit
389 #undef clrbit
390 #undef isset
391 #undef isclr
392 #define setbit(a,i) ((a)[(i)/NBBY] |= 1<<((i)%NBBY))
393 #define clrbit(a,i) ((a)[(i)/NBBY] &= ~(1<<((i)%NBBY)))
394 #define isset(a,i) ((a)[(i)/NBBY] & (1<<((i)%NBBY)))
395 #define isclr(a,i) (((a)[(i)/NBBY] & (1<<((i)%NBBY))) == 0)
396
397 #ifndef powerof2
398 #define powerof2(x) ((((x)-1)&(x))==0)
399 #endif
400
401 #undef roundup
402 #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
403
404 /* <sys/stat.h> */
405
406 #ifndef ALLPERMS
407 #define ALLPERMS (S_ISUID|S_ISGID|S_ISTXT|S_IRWXU|S_IRWXG|S_IRWXO)
408 #endif
409 #ifndef DEFFILEMODE
410 #define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
411 #endif
412 #ifndef S_ISTXT
413 #ifdef S_ISVTX
414 #define S_ISTXT S_ISVTX
415 #else
416 #define S_ISTXT 0
417 #endif
418 #endif
419
420 /* <sys/syslimits.h> */
421
422 #ifndef LINE_MAX
423 #define LINE_MAX 2048
424 #endif
425
426 /* <sys/time.h> */
427
428 #ifndef timercmp
429 #define timercmp(tvp, uvp, cmp) \
430 (((tvp)->tv_sec == (uvp)->tv_sec) ? \
431 ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
432 ((tvp)->tv_sec cmp (uvp)->tv_sec))
433 #endif
434 #ifndef timeradd
435 #define timeradd(tvp, uvp, vvp) \
436 do { \
437 (vvp)->tv_sec = (tvp)->tv_sec + (uvp)->tv_sec; \
438 (vvp)->tv_usec = (tvp)->tv_usec + (uvp)->tv_usec; \
439 if ((vvp)->tv_usec >= 1000000) { \
440 (vvp)->tv_sec++; \
441 (vvp)->tv_usec -= 1000000; \
442 } \
443 } while (/* CONSTCOND */ 0)
444 #endif
445 #ifndef timersub
446 #define timersub(tvp, uvp, vvp) \
447 do { \
448 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
449 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
450 if ((vvp)->tv_usec < 0) { \
451 (vvp)->tv_sec--; \
452 (vvp)->tv_usec += 1000000; \
453 } \
454 } while (/* CONSTCOND */ 0)
455 #endif
456
457 /* <sys/types.h> */
458
459 #if !HAVE_U_QUAD_T
460 /* #define, not typedef, as quad_t exists as a struct on some systems */
461 #define quad_t long long
462 #define u_quad_t unsigned long long
463 #define strtouq strtoull
464 #endif
465
466 #endif /* !__NETBSD_COMPAT_DEFS_H__ */
467