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