reentr.c

   1 /* -*- buffer-read-only: t -*-
   2  *
   3  *    reentr.c
   4  *
   5  *    Copyright (C) 2002, 2003, 2005 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 == -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 == -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 == -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_STRERROR_R
 138         PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
 139 #endif /* HAS_STRERROR_R */
 140 #ifdef HAS_TTYNAME_R
 141         PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
 142 #endif /* HAS_TTYNAME_R */
 143
 144 #endif /* USE_REENTRANT_API */
 145 }
 146
 147 void
 148 Perl_reentrant_init(pTHX) {
 149 #ifdef USE_REENTRANT_API
 150         Newx(PL_reentrant_buffer, 1, REENTR);
 151         Perl_reentrant_size(aTHX);
 152 #ifdef HAS_ASCTIME_R
 153         Newx(PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
 154 #endif /* HAS_ASCTIME_R */
 155 #ifdef HAS_CRYPT_R
 156 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
 157         PL_reentrant_buffer->_crypt_struct_buffer = 0;
 158 #endif
 159 #endif /* HAS_CRYPT_R */
 160 #ifdef HAS_CTIME_R
 161         Newx(PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
 162 #endif /* HAS_CTIME_R */
 163 #ifdef HAS_DRAND48_R
 164 #endif /* HAS_DRAND48_R */
 165 #ifdef HAS_GETGRNAM_R
 166 #   ifdef USE_GRENT_FPTR
 167         PL_reentrant_buffer->_grent_fptr = NULL;
 168 #   endif
 169         Newx(PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
 170 #endif /* HAS_GETGRNAM_R */
 171 #ifdef HAS_GETHOSTBYNAME_R
 172 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 173         Newx(PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
 174 #endif
 175 #endif /* HAS_GETHOSTBYNAME_R */
 176 #ifdef HAS_GETLOGIN_R
 177         Newx(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
 178 #endif /* HAS_GETLOGIN_R */
 179 #ifdef HAS_GETNETBYNAME_R
 180 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 181         Newx(PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
 182 #endif
 183 #endif /* HAS_GETNETBYNAME_R */
 184 #ifdef HAS_GETPROTOBYNAME_R
 185 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 186         Newx(PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
 187 #endif
 188 #endif /* HAS_GETPROTOBYNAME_R */
 189 #ifdef HAS_GETPWNAM_R
 190 #   ifdef USE_PWENT_FPTR
 191         PL_reentrant_buffer->_pwent_fptr = NULL;
 192 #   endif
 193         Newx(PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
 194 #endif /* HAS_GETPWNAM_R */
 195 #ifdef HAS_GETSERVBYNAME_R
 196 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
 197         Newx(PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
 198 #endif
 199 #endif /* HAS_GETSERVBYNAME_R */
 200 #ifdef HAS_GETSPNAM_R
 201 #   ifdef USE_SPENT_FPTR
 202         PL_reentrant_buffer->_spent_fptr = NULL;
 203 #   endif
 204         Newx(PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
 205 #endif /* HAS_GETSPNAM_R */
 206 #ifdef HAS_GMTIME_R
 207 #endif /* HAS_GMTIME_R */
 208 #ifdef HAS_LOCALTIME_R
 209 #endif /* HAS_LOCALTIME_R */
 210 #ifdef HAS_RANDOM_R
 211 #endif /* HAS_RANDOM_R */
 212 #ifdef HAS_READDIR_R
 213         PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
 214 #endif /* HAS_READDIR_R */
 215 #ifdef HAS_READDIR64_R
 216         PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
 217 #endif /* HAS_READDIR64_R */
 218 #ifdef HAS_SETLOCALE_R
 219         Newx(PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
 220 #endif /* HAS_SETLOCALE_R */
 221 #ifdef HAS_STRERROR_R
 222         Newx(PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
 223 #endif /* HAS_STRERROR_R */
 224 #ifdef HAS_TTYNAME_R
 225         Newx(PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
 226 #endif /* HAS_TTYNAME_R */
 227
 228 #endif /* USE_REENTRANT_API */
 229 }
 230
 231 void
 232 Perl_reentrant_free(pTHX) {
 233 #ifdef USE_REENTRANT_API
 234 #ifdef HAS_ASCTIME_R
 235         Safefree(PL_reentrant_buffer->_asctime_buffer);
 236 #endif /* HAS_ASCTIME_R */
 237 #ifdef HAS_CRYPT_R
 238 #if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
 239         Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
 240 #endif
 241 #endif /* HAS_CRYPT_R */
 242 #ifdef HAS_CTIME_R
 243         Safefree(PL_reentrant_buffer->_ctime_buffer);
 244 #endif /* HAS_CTIME_R */
 245 #ifdef HAS_DRAND48_R
 246 #endif /* HAS_DRAND48_R */
 247 #ifdef HAS_GETGRNAM_R
 248         Safefree(PL_reentrant_buffer->_grent_buffer);
 249 #endif /* HAS_GETGRNAM_R */
 250 #ifdef HAS_GETHOSTBYNAME_R
 251 #if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 252         Safefree(PL_reentrant_buffer->_hostent_buffer);
 253 #endif
 254 #endif /* HAS_GETHOSTBYNAME_R */
 255 #ifdef HAS_GETLOGIN_R
 256         Safefree(PL_reentrant_buffer->_getlogin_buffer);
 257 #endif /* HAS_GETLOGIN_R */
 258 #ifdef HAS_GETNETBYNAME_R
 259 #if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 260         Safefree(PL_reentrant_buffer->_netent_buffer);
 261 #endif
 262 #endif /* HAS_GETNETBYNAME_R */
 263 #ifdef HAS_GETPROTOBYNAME_R
 264 #if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
 265         Safefree(PL_reentrant_buffer->_protoent_buffer);
 266 #endif
 267 #endif /* HAS_GETPROTOBYNAME_R */
 268 #ifdef HAS_GETPWNAM_R
 269         Safefree(PL_reentrant_buffer->_pwent_buffer);
 270 #endif /* HAS_GETPWNAM_R */
 271 #ifdef HAS_GETSERVBYNAME_R
 272 #if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
 273         Safefree(PL_reentrant_buffer->_servent_buffer);
 274 #endif
 275 #endif /* HAS_GETSERVBYNAME_R */
 276 #ifdef HAS_GETSPNAM_R
 277         Safefree(PL_reentrant_buffer->_spent_buffer);
 278 #endif /* HAS_GETSPNAM_R */
 279 #ifdef HAS_GMTIME_R
 280 #endif /* HAS_GMTIME_R */
 281 #ifdef HAS_LOCALTIME_R
 282 #endif /* HAS_LOCALTIME_R */
 283 #ifdef HAS_RANDOM_R
 284 #endif /* HAS_RANDOM_R */
 285 #ifdef HAS_READDIR_R
 286         Safefree(PL_reentrant_buffer->_readdir_struct);
 287 #endif /* HAS_READDIR_R */
 288 #ifdef HAS_READDIR64_R
 289         Safefree(PL_reentrant_buffer->_readdir64_struct);
 290 #endif /* HAS_READDIR64_R */
 291 #ifdef HAS_SETLOCALE_R
 292         Safefree(PL_reentrant_buffer->_setlocale_buffer);
 293 #endif /* HAS_SETLOCALE_R */
 294 #ifdef HAS_STRERROR_R
 295         Safefree(PL_reentrant_buffer->_strerror_buffer);
 296 #endif /* HAS_STRERROR_R */
 297 #ifdef HAS_TTYNAME_R
 298         Safefree(PL_reentrant_buffer->_ttyname_buffer);
 299 #endif /* HAS_TTYNAME_R */
 300
 301         Safefree(PL_reentrant_buffer);
 302 #endif /* USE_REENTRANT_API */
 303 }
 304
 305 void*
 306 Perl_reentrant_retry(const char *f, ...)
 307 {
 308     dTHX;
 309     void *retptr = NULL;
 310 #ifdef USE_REENTRANT_API
 311 #  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)
 312     void *p0;
 313 #  endif
 314 #  if defined(USE_SERVENT_BUFFER)
 315     void *p1;
 316 #  endif
 317 #  if defined(USE_HOSTENT_BUFFER)
 318     size_t asize;
 319 #  endif
 320 #  if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
 321     int anint;
 322 #  endif
 323     va_list ap;
 324
 325     va_start(ap, f);
 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
 529     va_end(ap);
 530 #endif
 531     return retptr;
 532 }
 533
 534 /* ex: set ro: */