Re: [MacOS X] consider useshrplib='false' by default
[perl.git] / reentr.c
1 /*
2  *    reentr.c
3  *
4  *    Copyright (C) 2002, 2003, by Larry Wall and others
5  *
6  *    You may distribute under the terms of either the GNU General Public
7  *    License or the Artistic License, as specified in the README file.
8  *
9  *  !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
10  *  This file is built by reentrl.pl from data in reentr.pl.
11  *
12  * "Saruman," I said, standing away from him, "only one hand at a time can
13  *  wield the One, and you know that well, so do not trouble to say we!"
14  *
15  */
16
17 #include "EXTERN.h"
18 #define PERL_IN_REENTR_C
19 #include "perl.h"
20 #include "reentr.h"
21
22 void
23 Perl_reentrant_size(pTHX) {
24 #ifdef USE_REENTRANT_API
25 #define REENTRANTSMALLSIZE       256    /* Make something up. */
26 #define REENTRANTUSUALSIZE      4096    /* Make something up. */
27 #ifdef HAS_ASCTIME_R
28         PL_reentrant_buffer->_asctime_size = REENTRANTSMALLSIZE;
29 #endif /* HAS_ASCTIME_R */
30 #ifdef HAS_CRYPT_R
31 #endif /* HAS_CRYPT_R */
32 #ifdef HAS_CTIME_R
33         PL_reentrant_buffer->_ctime_size = REENTRANTSMALLSIZE;
34 #endif /* HAS_CTIME_R */
35 #ifdef HAS_DRAND48_R
36 #endif /* HAS_DRAND48_R */
37 #ifdef HAS_GETGRNAM_R
38 #   if defined(HAS_SYSCONF) && defined(_SC_GETGR_R_SIZE_MAX) && !defined(__GLIBC__)
39         PL_reentrant_buffer->_grent_size = sysconf(_SC_GETGR_R_SIZE_MAX);
40         if (PL_reentrant_buffer->_grent_size == -1)
41                 PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
42 #   else
43 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
44         PL_reentrant_buffer->_grent_size = SIABUFSIZ;
45 #       else
46 #           ifdef __sgi
47         PL_reentrant_buffer->_grent_size = BUFSIZ;
48 #           else
49         PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
50 #           endif
51 #       endif
52 #   endif 
53 #endif /* HAS_GETGRNAM_R */
54 #ifdef HAS_GETHOSTBYNAME_R
55 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
56         PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE;
57 #endif
58 #endif /* HAS_GETHOSTBYNAME_R */
59 #ifdef HAS_GETLOGIN_R
60         PL_reentrant_buffer->_getlogin_size = REENTRANTSMALLSIZE;
61 #endif /* HAS_GETLOGIN_R */
62 #ifdef HAS_GETNETBYNAME_R
63 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
64         PL_reentrant_buffer->_netent_size = REENTRANTUSUALSIZE;
65 #endif
66 #endif /* HAS_GETNETBYNAME_R */
67 #ifdef HAS_GETPROTOBYNAME_R
68 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
69         PL_reentrant_buffer->_protoent_size = REENTRANTUSUALSIZE;
70 #endif
71 #endif /* HAS_GETPROTOBYNAME_R */
72 #ifdef HAS_GETPWNAM_R
73 #   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
74         PL_reentrant_buffer->_pwent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
75         if (PL_reentrant_buffer->_pwent_size == -1)
76                 PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
77 #   else
78 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
79         PL_reentrant_buffer->_pwent_size = SIABUFSIZ;
80 #       else
81 #           ifdef __sgi
82         PL_reentrant_buffer->_pwent_size = BUFSIZ;
83 #           else
84         PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
85 #           endif
86 #       endif
87 #   endif 
88 #endif /* HAS_GETPWNAM_R */
89 #ifdef HAS_GETSERVBYNAME_R
90 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
91         PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE;
92 #endif
93 #endif /* HAS_GETSERVBYNAME_R */
94 #ifdef HAS_GETSPNAM_R
95 #   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
96         PL_reentrant_buffer->_spent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
97         if (PL_reentrant_buffer->_spent_size == -1)
98                 PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
99 #   else
100 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
101         PL_reentrant_buffer->_spent_size = SIABUFSIZ;
102 #       else
103 #           ifdef __sgi
104         PL_reentrant_buffer->_spent_size = BUFSIZ;
105 #           else
106         PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
107 #           endif
108 #       endif
109 #   endif 
110 #endif /* HAS_GETSPNAM_R */
111 #ifdef HAS_GMTIME_R
112 #endif /* HAS_GMTIME_R */
113 #ifdef HAS_LOCALTIME_R
114 #endif /* HAS_LOCALTIME_R */
115 #ifdef HAS_RANDOM_R
116 #endif /* HAS_RANDOM_R */
117 #ifdef HAS_READDIR_R
118         /* This is the size Solaris recommends.
119          * (though we go static, should use pathconf() instead) */
120         PL_reentrant_buffer->_readdir_size = sizeof(struct dirent) + MAXPATHLEN + 1;
121 #endif /* HAS_READDIR_R */
122 #ifdef HAS_READDIR64_R
123         /* This is the size Solaris recommends.
124          * (though we go static, should use pathconf() instead) */
125         PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1;
126 #endif /* HAS_READDIR64_R */
127 #ifdef HAS_SETLOCALE_R
128         PL_reentrant_buffer->_setlocale_size = REENTRANTSMALLSIZE;
129 #endif /* HAS_SETLOCALE_R */
130 #ifdef HAS_STRERROR_R
131         PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
132 #endif /* HAS_STRERROR_R */
133 #ifdef HAS_TTYNAME_R
134         PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
135 #endif /* HAS_TTYNAME_R */
136
137 #endif /* USE_REENTRANT_API */
138 }
139
140 void
141 Perl_reentrant_init(pTHX) {
142 #ifdef USE_REENTRANT_API
143         New(31337, PL_reentrant_buffer, 1, REENTR);
144         Perl_reentrant_size(aTHX);
145 #ifdef HAS_ASCTIME_R
146         New(31338, PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
147 #endif /* HAS_ASCTIME_R */
148 #ifdef HAS_CRYPT_R
149 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
150         PL_reentrant_buffer->_crypt_struct_buffer = 0;
151 #endif
152 #endif /* HAS_CRYPT_R */
153 #ifdef HAS_CTIME_R
154         New(31338, PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
155 #endif /* HAS_CTIME_R */
156 #ifdef HAS_DRAND48_R
157 #endif /* HAS_DRAND48_R */
158 #ifdef HAS_GETGRNAM_R
159 #   ifdef USE_GRENT_FPTR
160         PL_reentrant_buffer->_grent_fptr = NULL;
161 #   endif
162         New(31338, PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
163 #endif /* HAS_GETGRNAM_R */
164 #ifdef HAS_GETHOSTBYNAME_R
165 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
166         New(31338, PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
167 #endif
168 #endif /* HAS_GETHOSTBYNAME_R */
169 #ifdef HAS_GETLOGIN_R
170         New(31338, PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
171 #endif /* HAS_GETLOGIN_R */
172 #ifdef HAS_GETNETBYNAME_R
173 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
174         New(31338, PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
175 #endif
176 #endif /* HAS_GETNETBYNAME_R */
177 #ifdef HAS_GETPROTOBYNAME_R
178 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
179         New(31338, PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
180 #endif
181 #endif /* HAS_GETPROTOBYNAME_R */
182 #ifdef HAS_GETPWNAM_R
183 #   ifdef USE_PWENT_FPTR
184         PL_reentrant_buffer->_pwent_fptr = NULL;
185 #   endif
186         New(31338, PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
187 #endif /* HAS_GETPWNAM_R */
188 #ifdef HAS_GETSERVBYNAME_R
189 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
190         New(31338, PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
191 #endif
192 #endif /* HAS_GETSERVBYNAME_R */
193 #ifdef HAS_GETSPNAM_R
194 #   ifdef USE_SPENT_FPTR
195         PL_reentrant_buffer->_spent_fptr = NULL;
196 #   endif
197         New(31338, PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
198 #endif /* HAS_GETSPNAM_R */
199 #ifdef HAS_GMTIME_R
200 #endif /* HAS_GMTIME_R */
201 #ifdef HAS_LOCALTIME_R
202 #endif /* HAS_LOCALTIME_R */
203 #ifdef HAS_RANDOM_R
204 #endif /* HAS_RANDOM_R */
205 #ifdef HAS_READDIR_R
206         PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
207 #endif /* HAS_READDIR_R */
208 #ifdef HAS_READDIR64_R
209         PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
210 #endif /* HAS_READDIR64_R */
211 #ifdef HAS_SETLOCALE_R
212         New(31338, PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
213 #endif /* HAS_SETLOCALE_R */
214 #ifdef HAS_STRERROR_R
215         New(31338, PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
216 #endif /* HAS_STRERROR_R */
217 #ifdef HAS_TTYNAME_R
218         New(31338, PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
219 #endif /* HAS_TTYNAME_R */
220
221 #endif /* USE_REENTRANT_API */
222 }
223
224 void
225 Perl_reentrant_free(pTHX) {
226 #ifdef USE_REENTRANT_API
227 #ifdef HAS_ASCTIME_R
228         Safefree(PL_reentrant_buffer->_asctime_buffer);
229 #endif /* HAS_ASCTIME_R */
230 #ifdef HAS_CRYPT_R
231 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
232         Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
233 #endif
234 #endif /* HAS_CRYPT_R */
235 #ifdef HAS_CTIME_R
236         Safefree(PL_reentrant_buffer->_ctime_buffer);
237 #endif /* HAS_CTIME_R */
238 #ifdef HAS_DRAND48_R
239 #endif /* HAS_DRAND48_R */
240 #ifdef HAS_GETGRNAM_R
241         Safefree(PL_reentrant_buffer->_grent_buffer);
242 #endif /* HAS_GETGRNAM_R */
243 #ifdef HAS_GETHOSTBYNAME_R
244 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
245         Safefree(PL_reentrant_buffer->_hostent_buffer);
246 #endif
247 #endif /* HAS_GETHOSTBYNAME_R */
248 #ifdef HAS_GETLOGIN_R
249         Safefree(PL_reentrant_buffer->_getlogin_buffer);
250 #endif /* HAS_GETLOGIN_R */
251 #ifdef HAS_GETNETBYNAME_R
252 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
253         Safefree(PL_reentrant_buffer->_netent_buffer);
254 #endif
255 #endif /* HAS_GETNETBYNAME_R */
256 #ifdef HAS_GETPROTOBYNAME_R
257 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
258         Safefree(PL_reentrant_buffer->_protoent_buffer);
259 #endif
260 #endif /* HAS_GETPROTOBYNAME_R */
261 #ifdef HAS_GETPWNAM_R
262         Safefree(PL_reentrant_buffer->_pwent_buffer);
263 #endif /* HAS_GETPWNAM_R */
264 #ifdef HAS_GETSERVBYNAME_R
265 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
266         Safefree(PL_reentrant_buffer->_servent_buffer);
267 #endif
268 #endif /* HAS_GETSERVBYNAME_R */
269 #ifdef HAS_GETSPNAM_R
270         Safefree(PL_reentrant_buffer->_spent_buffer);
271 #endif /* HAS_GETSPNAM_R */
272 #ifdef HAS_GMTIME_R
273 #endif /* HAS_GMTIME_R */
274 #ifdef HAS_LOCALTIME_R
275 #endif /* HAS_LOCALTIME_R */
276 #ifdef HAS_RANDOM_R
277 #endif /* HAS_RANDOM_R */
278 #ifdef HAS_READDIR_R
279         Safefree(PL_reentrant_buffer->_readdir_struct);
280 #endif /* HAS_READDIR_R */
281 #ifdef HAS_READDIR64_R
282         Safefree(PL_reentrant_buffer->_readdir64_struct);
283 #endif /* HAS_READDIR64_R */
284 #ifdef HAS_SETLOCALE_R
285         Safefree(PL_reentrant_buffer->_setlocale_buffer);
286 #endif /* HAS_SETLOCALE_R */
287 #ifdef HAS_STRERROR_R
288         Safefree(PL_reentrant_buffer->_strerror_buffer);
289 #endif /* HAS_STRERROR_R */
290 #ifdef HAS_TTYNAME_R
291         Safefree(PL_reentrant_buffer->_ttyname_buffer);
292 #endif /* HAS_TTYNAME_R */
293
294         Safefree(PL_reentrant_buffer);
295 #endif /* USE_REENTRANT_API */
296 }
297
298 void*
299 Perl_reentrant_retry(const char *f, ...)
300 {
301     dTHX;
302     void *retptr = NULL;
303 #ifdef USE_REENTRANT_API
304 #  if defined(USE_HOSTENT_BUFFER) || defined(USE_GRENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PWENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
305     void *p0;
306 #  endif
307 #  if defined(USE_SERVENT_BUFFER)
308     void *p1;
309 #  endif
310 #  if defined(USE_HOSTENT_BUFFER)
311     size_t asize;
312 #  endif
313 #  if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
314     int anint;
315 #  endif
316     va_list ap;
317
318     va_start(ap, f);
319
320     switch (PL_op->op_type) {
321 #ifdef USE_HOSTENT_BUFFER
322     case OP_GHBYADDR:
323     case OP_GHBYNAME:
324     case OP_GHOSTENT:
325         {
326 #ifdef PERL_REENTRANT_MAXSIZE
327             if (PL_reentrant_buffer->_hostent_size <=
328                 PERL_REENTRANT_MAXSIZE / 2)
329 #endif
330             {
331                 PL_reentrant_buffer->_hostent_size *= 2;
332                 Renew(PL_reentrant_buffer->_hostent_buffer,
333                       PL_reentrant_buffer->_hostent_size, char);
334                 switch (PL_op->op_type) {
335                 case OP_GHBYADDR:
336                     p0    = va_arg(ap, void *);
337                     asize = va_arg(ap, size_t);
338                     anint  = va_arg(ap, int);
339                     retptr = gethostbyaddr(p0, asize, anint); break;
340                 case OP_GHBYNAME:
341                     p0 = va_arg(ap, void *);
342                     retptr = gethostbyname(p0); break;
343                 case OP_GHOSTENT:
344                     retptr = gethostent(); break;
345                 default:
346                     SETERRNO(ERANGE, LIB_INVARG);
347                     break;
348                 }
349             }
350         }
351         break;
352 #endif
353 #ifdef USE_GRENT_BUFFER
354     case OP_GGRNAM:
355     case OP_GGRGID:
356     case OP_GGRENT:
357         {
358 #ifdef PERL_REENTRANT_MAXSIZE
359             if (PL_reentrant_buffer->_grent_size <=
360                 PERL_REENTRANT_MAXSIZE / 2)
361 #endif
362             {
363                 Gid_t gid;
364                 PL_reentrant_buffer->_grent_size *= 2;
365                 Renew(PL_reentrant_buffer->_grent_buffer,
366                       PL_reentrant_buffer->_grent_size, char);
367                 switch (PL_op->op_type) {
368                 case OP_GGRNAM:
369                     p0 = va_arg(ap, void *);
370                     retptr = getgrnam(p0); break;
371                 case OP_GGRGID:
372 #if Gid_t_size < INTSIZE
373                     gid = (Gid_t)va_arg(ap, int);
374 #else
375                     gid = va_arg(ap, Gid_t);
376 #endif
377                     retptr = getgrgid(gid); break;
378                 case OP_GGRENT:
379                     retptr = getgrent(); break;
380                 default:
381                     SETERRNO(ERANGE, LIB_INVARG);
382                     break;
383                 }
384             }
385         }
386         break;
387 #endif
388 #ifdef USE_NETENT_BUFFER
389     case OP_GNBYADDR:
390     case OP_GNBYNAME:
391     case OP_GNETENT:
392         {
393 #ifdef PERL_REENTRANT_MAXSIZE
394             if (PL_reentrant_buffer->_netent_size <=
395                 PERL_REENTRANT_MAXSIZE / 2)
396 #endif
397             {
398                 Netdb_net_t net;
399                 PL_reentrant_buffer->_netent_size *= 2;
400                 Renew(PL_reentrant_buffer->_netent_buffer,
401                       PL_reentrant_buffer->_netent_size, char);
402                 switch (PL_op->op_type) {
403                 case OP_GNBYADDR:
404                     net = va_arg(ap, Netdb_net_t);
405                     anint = va_arg(ap, int);
406                     retptr = getnetbyaddr(net, anint); break;
407                 case OP_GNBYNAME:
408                     p0 = va_arg(ap, void *);
409                     retptr = getnetbyname(p0); break;
410                 case OP_GNETENT:
411                     retptr = getnetent(); break;
412                 default:
413                     SETERRNO(ERANGE, LIB_INVARG);
414                     break;
415                 }
416             }
417         }
418         break;
419 #endif
420 #ifdef USE_PWENT_BUFFER
421     case OP_GPWNAM:
422     case OP_GPWUID:
423     case OP_GPWENT:
424         {
425 #ifdef PERL_REENTRANT_MAXSIZE
426             if (PL_reentrant_buffer->_pwent_size <=
427                 PERL_REENTRANT_MAXSIZE / 2)
428 #endif
429             {
430                 Uid_t uid;
431                 PL_reentrant_buffer->_pwent_size *= 2;
432                 Renew(PL_reentrant_buffer->_pwent_buffer,
433                       PL_reentrant_buffer->_pwent_size, char);
434                 switch (PL_op->op_type) {
435                 case OP_GPWNAM:
436                     p0 = va_arg(ap, void *);
437                     retptr = getpwnam(p0); break;
438                 case OP_GPWUID:
439 #if Uid_t_size < INTSIZE
440                     uid = (Uid_t)va_arg(ap, int);
441 #else
442                     uid = va_arg(ap, Uid_t);
443 #endif
444                     retptr = getpwuid(uid); break;
445                 case OP_GPWENT:
446                     retptr = getpwent(); break;
447                 default:
448                     SETERRNO(ERANGE, LIB_INVARG);
449                     break;
450                 }
451             }
452         }
453         break;
454 #endif
455 #ifdef USE_PROTOENT_BUFFER
456     case OP_GPBYNAME:
457     case OP_GPBYNUMBER:
458     case OP_GPROTOENT:
459         {
460 #ifdef PERL_REENTRANT_MAXSIZE
461             if (PL_reentrant_buffer->_protoent_size <=
462                 PERL_REENTRANT_MAXSIZE / 2)
463 #endif
464             {
465                 PL_reentrant_buffer->_protoent_size *= 2;
466                 Renew(PL_reentrant_buffer->_protoent_buffer,
467                       PL_reentrant_buffer->_protoent_size, char);
468                 switch (PL_op->op_type) {
469                 case OP_GPBYNAME:
470                     p0 = va_arg(ap, void *);
471                     retptr = getprotobyname(p0); break;
472                 case OP_GPBYNUMBER:
473                     anint = va_arg(ap, int);
474                     retptr = getprotobynumber(anint); break;
475                 case OP_GPROTOENT:
476                     retptr = getprotoent(); break;
477                 default:
478                     SETERRNO(ERANGE, LIB_INVARG);
479                     break;
480                 }
481             }
482         }
483         break;
484 #endif
485 #ifdef USE_SERVENT_BUFFER
486     case OP_GSBYNAME:
487     case OP_GSBYPORT:
488     case OP_GSERVENT:
489         {
490 #ifdef PERL_REENTRANT_MAXSIZE
491             if (PL_reentrant_buffer->_servent_size <=
492                 PERL_REENTRANT_MAXSIZE / 2)
493 #endif
494             {
495                 PL_reentrant_buffer->_servent_size *= 2;
496                 Renew(PL_reentrant_buffer->_servent_buffer,
497                       PL_reentrant_buffer->_servent_size, char);
498                 switch (PL_op->op_type) {
499                 case OP_GSBYNAME:
500                     p0 = va_arg(ap, void *);
501                     p1 = va_arg(ap, void *);
502                     retptr = getservbyname(p0, p1); break;
503                 case OP_GSBYPORT:
504                     anint = va_arg(ap, int);
505                     p0 = va_arg(ap, void *);
506                     retptr = getservbyport(anint, p0); break;
507                 case OP_GSERVENT:
508                     retptr = getservent(); break;
509                 default:
510                     SETERRNO(ERANGE, LIB_INVARG);
511                     break;
512                 }
513             }
514         }
515         break;
516 #endif
517     default:
518         /* Not known how to retry, so just fail. */
519         break;
520     }
521
522     va_end(ap);
523 #endif
524     return retptr;
525 }
526