reentr.c

   1 /* -*- buffer-read-only: t -*-
   2  *
   3  *    reentr.c
   4  *
   5  *    Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
   6  *
   7  *    You may distribute under the terms of either the GNU General Public
   8  *    License or the Artistic License, as specified in the README file.
   9  *
  10  *  !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
  11  *  This file is built by reentr.pl from data in reentr.pl.
  12  *
  13  * "Saruman," I said, standing away from him, "only one hand at a time can
  14  *  wield the One, and you know that well, so do not trouble to say we!"
  15  *
  16  * This file contains a collection of automatically created wrappers
  17  * (created by running reentr.pl) for reentrant (thread-safe) versions of
  18  * various library calls, such as getpwent_r.  The wrapping is done so
  19  * that other files like pp_sys.c calling those library functions need not
  20  * care about the differences between various platforms' idiosyncrasies
  21  * regarding these reentrant interfaces.
  22  */
  23
  24 #include "EXTERN.h"
  25 #define PERL_IN_REENTR_C
  26 #include "perl.h"
  27 #include "reentr.h"
  28
  29 void
  30 Perl_reentrant_size(pTHX) {
  31 #ifdef USE_REENTRANT_API
  32 #define REENTRANTSMALLSIZE       256    /* Make something up. */
  33 #define REENTRANTUSUALSIZE      4096    /* Make something up. */
  34 #ifdef HAS_ASCTIME_R
  35         PL_reentrant_buffer->_asctime_size = REENTRANTSMALLSIZE;
  36 #endif /* HAS_ASCTIME_R */
  37 #ifdef HAS_CRYPT_R
  38 #endif /* HAS_CRYPT_R */
  39 #ifdef HAS_CTIME_R
  40         PL_reentrant_buffer->_ctime_size = REENTRANTSMALLSIZE;
  41 #endif /* HAS_CTIME_R */
  42 #ifdef HAS_DRAND48_R
  43 #endif /* HAS_DRAND48_R */
  44 #ifdef HAS_GETGRNAM_R
  45 #   if defined(HAS_SYSCONF) && defined(_SC_GETGR_R_SIZE_MAX) && !defined(__GLIBC__)
  46         PL_reentrant_buffer->_grent_size = sysconf(_SC_GETGR_R_SIZE_MAX);
  47         if (PL_reentrant_buffer->_grent_size == (size_t) -1)
  48                 PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
  49 #   else
  50 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
  51         PL_reentrant_buffer->_grent_size = SIABUFSIZ;
  52 #       else
  53 #           ifdef __sgi
  54         PL_reentrant_buffer->_grent_size = BUFSIZ;
  55 #           else
  56         PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
  57 #           endif
  58 #       endif
  59 #   endif
  60 #endif /* HAS_GETGRNAM_R */
  61 #ifdef HAS_GETHOSTBYNAME_R
  62 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
  63         PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE;
  64 #endif
  65 #endif /* HAS_GETHOSTBYNAME_R */
  66 #ifdef HAS_GETLOGIN_R
  67         PL_reentrant_buffer->_getlogin_size = REENTRANTSMALLSIZE;
  68 #endif /* HAS_GETLOGIN_R */
  69 #ifdef HAS_GETNETBYNAME_R
  70 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
  71         PL_reentrant_buffer->_netent_size = REENTRANTUSUALSIZE;
  72 #endif
  73 #endif /* HAS_GETNETBYNAME_R */
  74 #ifdef HAS_GETPROTOBYNAME_R
  75 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
  76         PL_reentrant_buffer->_protoent_size = REENTRANTUSUALSIZE;
  77 #endif
  78 #endif /* HAS_GETPROTOBYNAME_R */
  79 #ifdef HAS_GETPWNAM_R
  80 #   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
  81         PL_reentrant_buffer->_pwent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
  82         if (PL_reentrant_buffer->_pwent_size == (size_t) -1)
  83                 PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
  84 #   else
  85 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
  86         PL_reentrant_buffer->_pwent_size = SIABUFSIZ;
  87 #       else
  88 #           ifdef __sgi
  89         PL_reentrant_buffer->_pwent_size = BUFSIZ;
  90 #           else
  91         PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
  92 #           endif
  93 #       endif
  94 #   endif
  95 #endif /* HAS_GETPWNAM_R */
  96 #ifdef HAS_GETSERVBYNAME_R
  97 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
  98         PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE;
  99 #endif
 100 #endif /* HAS_GETSERVBYNAME_R */
 101 #ifdef HAS_GETSPNAM_R
 102 #   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
 103         PL_reentrant_buffer->_spent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
 104         if (PL_reentrant_buffer->_spent_size == (size_t) -1)
 105                 PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
 106 #   else
 107 #       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
 108         PL_reentrant_buffer->_spent_size = SIABUFSIZ;
 109 #       else
 110 #           ifdef __sgi
 111         PL_reentrant_buffer->_spent_size = BUFSIZ;
 112 #           else
 113         PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
 114 #           endif
 115 #       endif
 116 #   endif
 117 #endif /* HAS_GETSPNAM_R */
 118 #ifdef HAS_GMTIME_R
 119 #endif /* HAS_GMTIME_R */
 120 #ifdef HAS_LOCALTIME_R
 121 #endif /* HAS_LOCALTIME_R */
 122 #ifdef HAS_RANDOM_R
 123 #endif /* HAS_RANDOM_R */
 124 #ifdef HAS_READDIR_R
 125         /* This is the size Solaris recommends.
 126          * (though we go static, should use pathconf() instead) */
 127         PL_reentrant_buffer->_readdir_size = sizeof(struct dirent) + MAXPATHLEN + 1;
 128 #endif /* HAS_READDIR_R */
 129 #ifdef HAS_READDIR64_R
 130         /* This is the size Solaris recommends.
 131          * (though we go static, should use pathconf() instead) */
 132         PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1;
 133 #endif /* HAS_READDIR64_R */
 134 #ifdef HAS_SETLOCALE_R
 135         PL_reentrant_buffer->_setlocale_size = REENTRANTSMALLSIZE;
 136 #endif /* HAS_SETLOCALE_R */
 137 #ifdef HAS_SRANDOM_R
 138 #endif /* HAS_SRANDOM_R */
 139 #ifdef HAS_STRERROR_R
 140         PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
 141 #endif /* HAS_STRERROR_R */
 142 #ifdef HAS_TTYNAME_R
 143         PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
 144 #endif /* HAS_TTYNAME_R */
 145
 146 #endif /* USE_REENTRANT_API */
 147 }
 148
 149 void
 150 Perl_reentrant_init(pTHX) {
 151 #ifdef USE_REENTRANT_API
 152         Newx(PL_reentrant_buffer, 1, REENTR);
 153         Perl_reentrant_size(aTHX);
 154 #ifdef HAS_ASCTIME_R
 155         Newx(PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
 156 #endif /* HAS_ASCTIME_R */
 157 #ifdef HAS_CRYPT_R
 158 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
 159         PL_reentrant_buffer->_crypt_struct_buffer = 0;
 160 #endif
 161 #endif /* HAS_CRYPT_R */
 162 #ifdef HAS_CTIME_R
 163         Newx(PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
 164 #endif /* HAS_CTIME_R */
 165 #ifdef HAS_DRAND48_R
 166 #endif /* HAS_DRAND48_R */
 167 #ifdef HAS_GETGRNAM_R
 168 #   ifdef USE_GRENT_FPTR
 169         PL_reentrant_buffer->_grent_fptr = NULL;
 170 #   endif
 171         Newx(PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
 172 #endif /* HAS_GETGRNAM_R */
 173 #ifdef HAS_GETHOSTBYNAME_R
 174 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 175         Newx(PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
 176 #endif
 177 #endif /* HAS_GETHOSTBYNAME_R */
 178 #ifdef HAS_GETLOGIN_R
 179         Newx(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
 180 #endif /* HAS_GETLOGIN_R */
 181 #ifdef HAS_GETNETBYNAME_R
 182 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 183         Newx(PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
 184 #endif
 185 #endif /* HAS_GETNETBYNAME_R */
 186 #ifdef HAS_GETPROTOBYNAME_R
 187 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 188         Newx(PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
 189 #endif
 190 #endif /* HAS_GETPROTOBYNAME_R */
 191 #ifdef HAS_GETPWNAM_R
 192 #   ifdef USE_PWENT_FPTR
 193         PL_reentrant_buffer->_pwent_fptr = NULL;
 194 #   endif
 195         Newx(PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
 196 #endif /* HAS_GETPWNAM_R */
 197 #ifdef HAS_GETSERVBYNAME_R
 198 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
 199         Newx(PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
 200 #endif
 201 #endif /* HAS_GETSERVBYNAME_R */
 202 #ifdef HAS_GETSPNAM_R
 203 #   ifdef USE_SPENT_FPTR
 204         PL_reentrant_buffer->_spent_fptr = NULL;
 205 #   endif
 206         Newx(PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
 207 #endif /* HAS_GETSPNAM_R */
 208 #ifdef HAS_GMTIME_R
 209 #endif /* HAS_GMTIME_R */
 210 #ifdef HAS_LOCALTIME_R
 211 #endif /* HAS_LOCALTIME_R */
 212 #ifdef HAS_RANDOM_R
 213 #endif /* HAS_RANDOM_R */
 214 #ifdef HAS_READDIR_R
 215         PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
 216 #endif /* HAS_READDIR_R */
 217 #ifdef HAS_READDIR64_R
 218         PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
 219 #endif /* HAS_READDIR64_R */
 220 #ifdef HAS_SETLOCALE_R
 221         Newx(PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
 222 #endif /* HAS_SETLOCALE_R */
 223 #ifdef HAS_SRANDOM_R
 224 #endif /* HAS_SRANDOM_R */
 225 #ifdef HAS_STRERROR_R
 226         Newx(PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
 227 #endif /* HAS_STRERROR_R */
 228 #ifdef HAS_TTYNAME_R
 229         Newx(PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
 230 #endif /* HAS_TTYNAME_R */
 231
 232 #endif /* USE_REENTRANT_API */
 233 }
 234
 235 void
 236 Perl_reentrant_free(pTHX) {
 237 #ifdef USE_REENTRANT_API
 238 #ifdef HAS_ASCTIME_R
 239         Safefree(PL_reentrant_buffer->_asctime_buffer);
 240 #endif /* HAS_ASCTIME_R */
 241 #ifdef HAS_CRYPT_R
 242 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
 243         Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
 244 #endif
 245 #endif /* HAS_CRYPT_R */
 246 #ifdef HAS_CTIME_R
 247         Safefree(PL_reentrant_buffer->_ctime_buffer);
 248 #endif /* HAS_CTIME_R */
 249 #ifdef HAS_DRAND48_R
 250 #endif /* HAS_DRAND48_R */
 251 #ifdef HAS_GETGRNAM_R
 252         Safefree(PL_reentrant_buffer->_grent_buffer);
 253 #endif /* HAS_GETGRNAM_R */
 254 #ifdef HAS_GETHOSTBYNAME_R
 255 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 256         Safefree(PL_reentrant_buffer->_hostent_buffer);
 257 #endif
 258 #endif /* HAS_GETHOSTBYNAME_R */
 259 #ifdef HAS_GETLOGIN_R
 260         Safefree(PL_reentrant_buffer->_getlogin_buffer);
 261 #endif /* HAS_GETLOGIN_R */
 262 #ifdef HAS_GETNETBYNAME_R
 263 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 264         Safefree(PL_reentrant_buffer->_netent_buffer);
 265 #endif
 266 #endif /* HAS_GETNETBYNAME_R */
 267 #ifdef HAS_GETPROTOBYNAME_R
 268 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 269         Safefree(PL_reentrant_buffer->_protoent_buffer);
 270 #endif
 271 #endif /* HAS_GETPROTOBYNAME_R */
 272 #ifdef HAS_GETPWNAM_R
 273         Safefree(PL_reentrant_buffer->_pwent_buffer);
 274 #endif /* HAS_GETPWNAM_R */
 275 #ifdef HAS_GETSERVBYNAME_R
 276 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
 277         Safefree(PL_reentrant_buffer->_servent_buffer);
 278 #endif
 279 #endif /* HAS_GETSERVBYNAME_R */
 280 #ifdef HAS_GETSPNAM_R
 281         Safefree(PL_reentrant_buffer->_spent_buffer);
 282 #endif /* HAS_GETSPNAM_R */
 283 #ifdef HAS_GMTIME_R
 284 #endif /* HAS_GMTIME_R */
 285 #ifdef HAS_LOCALTIME_R
 286 #endif /* HAS_LOCALTIME_R */
 287 #ifdef HAS_RANDOM_R
 288 #endif /* HAS_RANDOM_R */
 289 #ifdef HAS_READDIR_R
 290         Safefree(PL_reentrant_buffer->_readdir_struct);
 291 #endif /* HAS_READDIR_R */
 292 #ifdef HAS_READDIR64_R
 293         Safefree(PL_reentrant_buffer->_readdir64_struct);
 294 #endif /* HAS_READDIR64_R */
 295 #ifdef HAS_SETLOCALE_R
 296         Safefree(PL_reentrant_buffer->_setlocale_buffer);
 297 #endif /* HAS_SETLOCALE_R */
 298 #ifdef HAS_SRANDOM_R
 299 #endif /* HAS_SRANDOM_R */
 300 #ifdef HAS_STRERROR_R
 301         Safefree(PL_reentrant_buffer->_strerror_buffer);
 302 #endif /* HAS_STRERROR_R */
 303 #ifdef HAS_TTYNAME_R
 304         Safefree(PL_reentrant_buffer->_ttyname_buffer);
 305 #endif /* HAS_TTYNAME_R */
 306
 307         Safefree(PL_reentrant_buffer);
 308 #endif /* USE_REENTRANT_API */
 309 }
 310
 311 void*
 312 Perl_reentrant_retry(const char *f, ...)
 313 {
 314     dTHX;
 315     void *retptr = NULL;
 316     va_list ap;
 317 #ifdef USE_REENTRANT_API
 318     /* Easier to special case this here than in embed.pl. (Look at what it
 319        generates for proto.h) */
 320     PERL_ARGS_ASSERT_REENTRANT_RETRY;
 321 #endif
 322     va_start(ap, f);
 323     {
 324 #ifdef USE_REENTRANT_API
 325 #  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)
 326     void *p0;
 327 #  endif
 328 #  if defined(USE_SERVENT_BUFFER)
 329     void *p1;
 330 #  endif
 331 #  if defined(USE_HOSTENT_BUFFER)
 332     size_t asize;
 333 #  endif
 334 #  if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
 335     int anint;
 336 #  endif
 337
 338     switch (PL_op->op_type) {
 339 #ifdef USE_HOSTENT_BUFFER
 340     case OP_GHBYADDR:
 341     case OP_GHBYNAME:
 342     case OP_GHOSTENT:
 343         {
 344 #ifdef PERL_REENTRANT_MAXSIZE
 345             if (PL_reentrant_buffer->_hostent_size <=
 346                 PERL_REENTRANT_MAXSIZE / 2)
 347 #endif
 348             {
 349                 PL_reentrant_buffer->_hostent_size *= 2;
 350                 Renew(PL_reentrant_buffer->_hostent_buffer,
 351                       PL_reentrant_buffer->_hostent_size, char);
 352                 switch (PL_op->op_type) {
 353                 case OP_GHBYADDR:
 354                     p0    = va_arg(ap, void *);
 355                     asize = va_arg(ap, size_t);
 356                     anint  = va_arg(ap, int);
 357                     retptr = gethostbyaddr(p0, asize, anint); break;
 358                 case OP_GHBYNAME:
 359                     p0 = va_arg(ap, void *);
 360                     retptr = gethostbyname((char *)p0); break;
 361                 case OP_GHOSTENT:
 362                     retptr = gethostent(); break;
 363                 default:
 364                     SETERRNO(ERANGE, LIB_INVARG);
 365                     break;
 366                 }
 367             }
 368         }
 369         break;
 370 #endif
 371 #ifdef USE_GRENT_BUFFER
 372     case OP_GGRNAM:
 373     case OP_GGRGID:
 374     case OP_GGRENT:
 375         {
 376 #ifdef PERL_REENTRANT_MAXSIZE
 377             if (PL_reentrant_buffer->_grent_size <=
 378                 PERL_REENTRANT_MAXSIZE / 2)
 379 #endif
 380             {
 381                 Gid_t gid;
 382                 PL_reentrant_buffer->_grent_size *= 2;
 383                 Renew(PL_reentrant_buffer->_grent_buffer,
 384                       PL_reentrant_buffer->_grent_size, char);
 385                 switch (PL_op->op_type) {
 386                 case OP_GGRNAM:
 387                     p0 = va_arg(ap, void *);
 388                     retptr = getgrnam((char *)p0); break;
 389                 case OP_GGRGID:
 390 #if Gid_t_size < INTSIZE
 391                     gid = (Gid_t)va_arg(ap, int);
 392 #else
 393                     gid = va_arg(ap, Gid_t);
 394 #endif
 395                     retptr = getgrgid(gid); break;
 396                 case OP_GGRENT:
 397                     retptr = getgrent(); break;
 398                 default:
 399                     SETERRNO(ERANGE, LIB_INVARG);
 400                     break;
 401                 }
 402             }
 403         }
 404         break;
 405 #endif
 406 #ifdef USE_NETENT_BUFFER
 407     case OP_GNBYADDR:
 408     case OP_GNBYNAME:
 409     case OP_GNETENT:
 410         {
 411 #ifdef PERL_REENTRANT_MAXSIZE
 412             if (PL_reentrant_buffer->_netent_size <=
 413                 PERL_REENTRANT_MAXSIZE / 2)
 414 #endif
 415             {
 416                 Netdb_net_t net;
 417                 PL_reentrant_buffer->_netent_size *= 2;
 418                 Renew(PL_reentrant_buffer->_netent_buffer,
 419                       PL_reentrant_buffer->_netent_size, char);
 420                 switch (PL_op->op_type) {
 421                 case OP_GNBYADDR:
 422                     net = va_arg(ap, Netdb_net_t);
 423                     anint = va_arg(ap, int);
 424                     retptr = getnetbyaddr(net, anint); break;
 425                 case OP_GNBYNAME:
 426                     p0 = va_arg(ap, void *);
 427                     retptr = getnetbyname((char *)p0); break;
 428                 case OP_GNETENT:
 429                     retptr = getnetent(); break;
 430                 default:
 431                     SETERRNO(ERANGE, LIB_INVARG);
 432                     break;
 433                 }
 434             }
 435         }
 436         break;
 437 #endif
 438 #ifdef USE_PWENT_BUFFER
 439     case OP_GPWNAM:
 440     case OP_GPWUID:
 441     case OP_GPWENT:
 442         {
 443 #ifdef PERL_REENTRANT_MAXSIZE
 444             if (PL_reentrant_buffer->_pwent_size <=
 445                 PERL_REENTRANT_MAXSIZE / 2)
 446 #endif
 447             {
 448                 Uid_t uid;
 449                 PL_reentrant_buffer->_pwent_size *= 2;
 450                 Renew(PL_reentrant_buffer->_pwent_buffer,
 451                       PL_reentrant_buffer->_pwent_size, char);
 452                 switch (PL_op->op_type) {
 453                 case OP_GPWNAM:
 454                     p0 = va_arg(ap, void *);
 455                     retptr = getpwnam((char *)p0); break;
 456                 case OP_GPWUID:
 457 #if Uid_t_size < INTSIZE
 458                     uid = (Uid_t)va_arg(ap, int);
 459 #else
 460                     uid = va_arg(ap, Uid_t);
 461 #endif
 462                     retptr = getpwuid(uid); break;
 463                 case OP_GPWENT:
 464                     retptr = getpwent(); break;
 465                 default:
 466                     SETERRNO(ERANGE, LIB_INVARG);
 467                     break;
 468                 }
 469             }
 470         }
 471         break;
 472 #endif
 473 #ifdef USE_PROTOENT_BUFFER
 474     case OP_GPBYNAME:
 475     case OP_GPBYNUMBER:
 476     case OP_GPROTOENT:
 477         {
 478 #ifdef PERL_REENTRANT_MAXSIZE
 479             if (PL_reentrant_buffer->_protoent_size <=
 480                 PERL_REENTRANT_MAXSIZE / 2)
 481 #endif
 482             {
 483                 PL_reentrant_buffer->_protoent_size *= 2;
 484                 Renew(PL_reentrant_buffer->_protoent_buffer,
 485                       PL_reentrant_buffer->_protoent_size, char);
 486                 switch (PL_op->op_type) {
 487                 case OP_GPBYNAME:
 488                     p0 = va_arg(ap, void *);
 489                     retptr = getprotobyname((char *)p0); break;
 490                 case OP_GPBYNUMBER:
 491                     anint = va_arg(ap, int);
 492                     retptr = getprotobynumber(anint); break;
 493                 case OP_GPROTOENT:
 494                     retptr = getprotoent(); break;
 495                 default:
 496                     SETERRNO(ERANGE, LIB_INVARG);
 497                     break;
 498                 }
 499             }
 500         }
 501         break;
 502 #endif
 503 #ifdef USE_SERVENT_BUFFER
 504     case OP_GSBYNAME:
 505     case OP_GSBYPORT:
 506     case OP_GSERVENT:
 507         {
 508 #ifdef PERL_REENTRANT_MAXSIZE
 509             if (PL_reentrant_buffer->_servent_size <=
 510                 PERL_REENTRANT_MAXSIZE / 2)
 511 #endif
 512             {
 513                 PL_reentrant_buffer->_servent_size *= 2;
 514                 Renew(PL_reentrant_buffer->_servent_buffer,
 515                       PL_reentrant_buffer->_servent_size, char);
 516                 switch (PL_op->op_type) {
 517                 case OP_GSBYNAME:
 518                     p0 = va_arg(ap, void *);
 519                     p1 = va_arg(ap, void *);
 520                     retptr = getservbyname((char *)p0, (char *)p1); break;
 521                 case OP_GSBYPORT:
 522                     anint = va_arg(ap, int);
 523                     p0 = va_arg(ap, void *);
 524                     retptr = getservbyport(anint, (char *)p0); break;
 525                 case OP_GSERVENT:
 526                     retptr = getservent(); break;
 527                 default:
 528                     SETERRNO(ERANGE, LIB_INVARG);
 529                     break;
 530                 }
 531             }
 532         }
 533         break;
 534 #endif
 535     default:
 536         /* Not known how to retry, so just fail. */
 537         break;
 538     }
 539 #else
 540     PERL_UNUSED_ARG(f);
 541 #endif
 542     }
 543     va_end(ap);
 544     return retptr;
 545 }
 546
 547 /* ex: set ro: */