[perl5.git] / reentr.c

/*
 *    reentr.c
 *
 *    Copyright (C) 2002, 2003, by Larry Wall and others
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 *
 *  !!!!!!!   DO NOT EDIT THIS FILE   !!!!!!!
 *  This file is built by reentr.pl from data in reentr.pl.
 *
 * "Saruman," I said, standing away from him, "only one hand at a time can
 *  wield the One, and you know that well, so do not trouble to say we!"
 *
 * This file contains a collection of automatically created wrappers
 * (created by running reentr.pl) for reentrant (thread-safe) versions of
 * various library calls, such as getpwent_r.  The wrapping is done so
 * that other files like pp_sys.c calling those library functions need not
 * care about the differences between various platforms' idiosyncrasies
 * regarding these reentrant interfaces.  
 */

#include "EXTERN.h"
#define PERL_IN_REENTR_C
#include "perl.h"
#include "reentr.h"

void
Perl_reentrant_size(pTHX) {
#ifdef USE_REENTRANT_API
#define REENTRANTSMALLSIZE	 256	/* Make something up. */
#define REENTRANTUSUALSIZE	4096	/* Make something up. */
#ifdef HAS_ASCTIME_R
	PL_reentrant_buffer->_asctime_size = REENTRANTSMALLSIZE;
#endif /* HAS_ASCTIME_R */
#ifdef HAS_CRYPT_R
#endif /* HAS_CRYPT_R */
#ifdef HAS_CTIME_R
	PL_reentrant_buffer->_ctime_size = REENTRANTSMALLSIZE;
#endif /* HAS_CTIME_R */
#ifdef HAS_DRAND48_R
#endif /* HAS_DRAND48_R */
#ifdef HAS_GETGRNAM_R
#   if defined(HAS_SYSCONF) && defined(_SC_GETGR_R_SIZE_MAX) && !defined(__GLIBC__)
	PL_reentrant_buffer->_grent_size = sysconf(_SC_GETGR_R_SIZE_MAX);
	if (PL_reentrant_buffer->_grent_size == -1)
		PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
#   else
#       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
	PL_reentrant_buffer->_grent_size = SIABUFSIZ;
#       else
#           ifdef __sgi
	PL_reentrant_buffer->_grent_size = BUFSIZ;
#           else
	PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
#           endif
#       endif
#   endif 
#endif /* HAS_GETGRNAM_R */
#ifdef HAS_GETHOSTBYNAME_R
#if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE;
#endif
#endif /* HAS_GETHOSTBYNAME_R */
#ifdef HAS_GETLOGIN_R
	PL_reentrant_buffer->_getlogin_size = REENTRANTSMALLSIZE;
#endif /* HAS_GETLOGIN_R */
#ifdef HAS_GETNETBYNAME_R
#if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	PL_reentrant_buffer->_netent_size = REENTRANTUSUALSIZE;
#endif
#endif /* HAS_GETNETBYNAME_R */
#ifdef HAS_GETPROTOBYNAME_R
#if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	PL_reentrant_buffer->_protoent_size = REENTRANTUSUALSIZE;
#endif
#endif /* HAS_GETPROTOBYNAME_R */
#ifdef HAS_GETPWNAM_R
#   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
	PL_reentrant_buffer->_pwent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
	if (PL_reentrant_buffer->_pwent_size == -1)
		PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
#   else
#       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
	PL_reentrant_buffer->_pwent_size = SIABUFSIZ;
#       else
#           ifdef __sgi
	PL_reentrant_buffer->_pwent_size = BUFSIZ;
#           else
	PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
#           endif
#       endif
#   endif 
#endif /* HAS_GETPWNAM_R */
#ifdef HAS_GETSERVBYNAME_R
#if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
	PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE;
#endif
#endif /* HAS_GETSERVBYNAME_R */
#ifdef HAS_GETSPNAM_R
#   if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
	PL_reentrant_buffer->_spent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
	if (PL_reentrant_buffer->_spent_size == -1)
		PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
#   else
#       if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
	PL_reentrant_buffer->_spent_size = SIABUFSIZ;
#       else
#           ifdef __sgi
	PL_reentrant_buffer->_spent_size = BUFSIZ;
#           else
	PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
#           endif
#       endif
#   endif 
#endif /* HAS_GETSPNAM_R */
#ifdef HAS_GMTIME_R
#endif /* HAS_GMTIME_R */
#ifdef HAS_LOCALTIME_R
#endif /* HAS_LOCALTIME_R */
#ifdef HAS_RANDOM_R
#endif /* HAS_RANDOM_R */
#ifdef HAS_READDIR_R
	/* This is the size Solaris recommends.
	 * (though we go static, should use pathconf() instead) */
	PL_reentrant_buffer->_readdir_size = sizeof(struct dirent) + MAXPATHLEN + 1;
#endif /* HAS_READDIR_R */
#ifdef HAS_READDIR64_R
	/* This is the size Solaris recommends.
	 * (though we go static, should use pathconf() instead) */
	PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1;
#endif /* HAS_READDIR64_R */
#ifdef HAS_SETLOCALE_R
	PL_reentrant_buffer->_setlocale_size = REENTRANTSMALLSIZE;
#endif /* HAS_SETLOCALE_R */
#ifdef HAS_SRANDOM_R
#endif /* HAS_SRANDOM_R */
#ifdef HAS_STRERROR_R
	PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
#endif /* HAS_STRERROR_R */
#ifdef HAS_TTYNAME_R
	PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
#endif /* HAS_TTYNAME_R */

#endif /* USE_REENTRANT_API */
}

void
Perl_reentrant_init(pTHX) {
#ifdef USE_REENTRANT_API
	New(31337, PL_reentrant_buffer, 1, REENTR);
	Perl_reentrant_size(aTHX);
#ifdef HAS_ASCTIME_R
	New(31338, PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
#endif /* HAS_ASCTIME_R */
#ifdef HAS_CRYPT_R
#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
	PL_reentrant_buffer->_crypt_struct_buffer = 0;
#endif
#endif /* HAS_CRYPT_R */
#ifdef HAS_CTIME_R
	New(31338, PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
#endif /* HAS_CTIME_R */
#ifdef HAS_DRAND48_R
#endif /* HAS_DRAND48_R */
#ifdef HAS_GETGRNAM_R
#   ifdef USE_GRENT_FPTR
	PL_reentrant_buffer->_grent_fptr = NULL;
#   endif
	New(31338, PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
#endif /* HAS_GETGRNAM_R */
#ifdef HAS_GETHOSTBYNAME_R
#if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	New(31338, PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
#endif
#endif /* HAS_GETHOSTBYNAME_R */
#ifdef HAS_GETLOGIN_R
	New(31338, PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
#endif /* HAS_GETLOGIN_R */
#ifdef HAS_GETNETBYNAME_R
#if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	New(31338, PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
#endif
#endif /* HAS_GETNETBYNAME_R */
#ifdef HAS_GETPROTOBYNAME_R
#if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	New(31338, PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
#endif
#endif /* HAS_GETPROTOBYNAME_R */
#ifdef HAS_GETPWNAM_R
#   ifdef USE_PWENT_FPTR
	PL_reentrant_buffer->_pwent_fptr = NULL;
#   endif
	New(31338, PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
#endif /* HAS_GETPWNAM_R */
#ifdef HAS_GETSERVBYNAME_R
#if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
	New(31338, PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
#endif
#endif /* HAS_GETSERVBYNAME_R */
#ifdef HAS_GETSPNAM_R
#   ifdef USE_SPENT_FPTR
	PL_reentrant_buffer->_spent_fptr = NULL;
#   endif
	New(31338, PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
#endif /* HAS_GETSPNAM_R */
#ifdef HAS_GMTIME_R
#endif /* HAS_GMTIME_R */
#ifdef HAS_LOCALTIME_R
#endif /* HAS_LOCALTIME_R */
#ifdef HAS_RANDOM_R
#endif /* HAS_RANDOM_R */
#ifdef HAS_READDIR_R
	PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
#endif /* HAS_READDIR_R */
#ifdef HAS_READDIR64_R
	PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
#endif /* HAS_READDIR64_R */
#ifdef HAS_SETLOCALE_R
	New(31338, PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
#endif /* HAS_SETLOCALE_R */
#ifdef HAS_SRANDOM_R
#endif /* HAS_SRANDOM_R */
#ifdef HAS_STRERROR_R
	New(31338, PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
#endif /* HAS_STRERROR_R */
#ifdef HAS_TTYNAME_R
	New(31338, PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
#endif /* HAS_TTYNAME_R */

#endif /* USE_REENTRANT_API */
}

void
Perl_reentrant_free(pTHX) {
#ifdef USE_REENTRANT_API
#ifdef HAS_ASCTIME_R
	Safefree(PL_reentrant_buffer->_asctime_buffer);
#endif /* HAS_ASCTIME_R */
#ifdef HAS_CRYPT_R
#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
	Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
#endif
#endif /* HAS_CRYPT_R */
#ifdef HAS_CTIME_R
	Safefree(PL_reentrant_buffer->_ctime_buffer);
#endif /* HAS_CTIME_R */
#ifdef HAS_DRAND48_R
#endif /* HAS_DRAND48_R */
#ifdef HAS_GETGRNAM_R
	Safefree(PL_reentrant_buffer->_grent_buffer);
#endif /* HAS_GETGRNAM_R */
#ifdef HAS_GETHOSTBYNAME_R
#if   !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	Safefree(PL_reentrant_buffer->_hostent_buffer);
#endif
#endif /* HAS_GETHOSTBYNAME_R */
#ifdef HAS_GETLOGIN_R
	Safefree(PL_reentrant_buffer->_getlogin_buffer);
#endif /* HAS_GETLOGIN_R */
#ifdef HAS_GETNETBYNAME_R
#if   !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	Safefree(PL_reentrant_buffer->_netent_buffer);
#endif
#endif /* HAS_GETNETBYNAME_R */
#ifdef HAS_GETPROTOBYNAME_R
#if   !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
	Safefree(PL_reentrant_buffer->_protoent_buffer);
#endif
#endif /* HAS_GETPROTOBYNAME_R */
#ifdef HAS_GETPWNAM_R
	Safefree(PL_reentrant_buffer->_pwent_buffer);
#endif /* HAS_GETPWNAM_R */
#ifdef HAS_GETSERVBYNAME_R
#if   !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
	Safefree(PL_reentrant_buffer->_servent_buffer);
#endif
#endif /* HAS_GETSERVBYNAME_R */
#ifdef HAS_GETSPNAM_R
	Safefree(PL_reentrant_buffer->_spent_buffer);
#endif /* HAS_GETSPNAM_R */
#ifdef HAS_GMTIME_R
#endif /* HAS_GMTIME_R */
#ifdef HAS_LOCALTIME_R
#endif /* HAS_LOCALTIME_R */
#ifdef HAS_RANDOM_R
#endif /* HAS_RANDOM_R */
#ifdef HAS_READDIR_R
	Safefree(PL_reentrant_buffer->_readdir_struct);
#endif /* HAS_READDIR_R */
#ifdef HAS_READDIR64_R
	Safefree(PL_reentrant_buffer->_readdir64_struct);
#endif /* HAS_READDIR64_R */
#ifdef HAS_SETLOCALE_R
	Safefree(PL_reentrant_buffer->_setlocale_buffer);
#endif /* HAS_SETLOCALE_R */
#ifdef HAS_SRANDOM_R
#endif /* HAS_SRANDOM_R */
#ifdef HAS_STRERROR_R
	Safefree(PL_reentrant_buffer->_strerror_buffer);
#endif /* HAS_STRERROR_R */
#ifdef HAS_TTYNAME_R
	Safefree(PL_reentrant_buffer->_ttyname_buffer);
#endif /* HAS_TTYNAME_R */

	Safefree(PL_reentrant_buffer);
#endif /* USE_REENTRANT_API */
}

void*
Perl_reentrant_retry(const char *f, ...)
{
    dTHX;
    void *retptr = NULL;
#ifdef USE_REENTRANT_API
#  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)
    void *p0;
#  endif
#  if defined(USE_SERVENT_BUFFER)
    void *p1;
#  endif
#  if defined(USE_HOSTENT_BUFFER)
    size_t asize;
#  endif
#  if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
    int anint;
#  endif
    va_list ap;

    va_start(ap, f);

    switch (PL_op->op_type) {
#ifdef USE_HOSTENT_BUFFER
    case OP_GHBYADDR:
    case OP_GHBYNAME:
    case OP_GHOSTENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_hostent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		PL_reentrant_buffer->_hostent_size *= 2;
		Renew(PL_reentrant_buffer->_hostent_buffer,
		      PL_reentrant_buffer->_hostent_size, char);
		switch (PL_op->op_type) {
	        case OP_GHBYADDR:
		    p0    = va_arg(ap, void *);
		    asize = va_arg(ap, size_t);
		    anint  = va_arg(ap, int);
		    retptr = gethostbyaddr(p0, asize, anint); break;
	        case OP_GHBYNAME:
		    p0 = va_arg(ap, void *);
		    retptr = gethostbyname((char *)p0); break;
	        case OP_GHOSTENT:
		    retptr = gethostent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
#ifdef USE_GRENT_BUFFER
    case OP_GGRNAM:
    case OP_GGRGID:
    case OP_GGRENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_grent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		Gid_t gid;
		PL_reentrant_buffer->_grent_size *= 2;
		Renew(PL_reentrant_buffer->_grent_buffer,
		      PL_reentrant_buffer->_grent_size, char);
		switch (PL_op->op_type) {
	        case OP_GGRNAM:
		    p0 = va_arg(ap, void *);
		    retptr = getgrnam((char *)p0); break;
	        case OP_GGRGID:
#if Gid_t_size < INTSIZE
		    gid = (Gid_t)va_arg(ap, int);
#else
		    gid = va_arg(ap, Gid_t);
#endif
		    retptr = getgrgid(gid); break;
	        case OP_GGRENT:
		    retptr = getgrent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
#ifdef USE_NETENT_BUFFER
    case OP_GNBYADDR:
    case OP_GNBYNAME:
    case OP_GNETENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_netent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		Netdb_net_t net;
		PL_reentrant_buffer->_netent_size *= 2;
		Renew(PL_reentrant_buffer->_netent_buffer,
		      PL_reentrant_buffer->_netent_size, char);
		switch (PL_op->op_type) {
	        case OP_GNBYADDR:
		    net = va_arg(ap, Netdb_net_t);
		    anint = va_arg(ap, int);
		    retptr = getnetbyaddr(net, anint); break;
	        case OP_GNBYNAME:
		    p0 = va_arg(ap, void *);
		    retptr = getnetbyname((char *)p0); break;
	        case OP_GNETENT:
		    retptr = getnetent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
#ifdef USE_PWENT_BUFFER
    case OP_GPWNAM:
    case OP_GPWUID:
    case OP_GPWENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_pwent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		Uid_t uid;
		PL_reentrant_buffer->_pwent_size *= 2;
		Renew(PL_reentrant_buffer->_pwent_buffer,
		      PL_reentrant_buffer->_pwent_size, char);
		switch (PL_op->op_type) {
	        case OP_GPWNAM:
		    p0 = va_arg(ap, void *);
		    retptr = getpwnam((char *)p0); break;
	        case OP_GPWUID:
#if Uid_t_size < INTSIZE
		    uid = (Uid_t)va_arg(ap, int);
#else
		    uid = va_arg(ap, Uid_t);
#endif
		    retptr = getpwuid(uid); break;
	        case OP_GPWENT:
		    retptr = getpwent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
#ifdef USE_PROTOENT_BUFFER
    case OP_GPBYNAME:
    case OP_GPBYNUMBER:
    case OP_GPROTOENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_protoent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		PL_reentrant_buffer->_protoent_size *= 2;
		Renew(PL_reentrant_buffer->_protoent_buffer,
		      PL_reentrant_buffer->_protoent_size, char);
		switch (PL_op->op_type) {
	        case OP_GPBYNAME:
		    p0 = va_arg(ap, void *);
		    retptr = getprotobyname((char *)p0); break;
	        case OP_GPBYNUMBER:
		    anint = va_arg(ap, int);
		    retptr = getprotobynumber(anint); break;
	        case OP_GPROTOENT:
		    retptr = getprotoent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
#ifdef USE_SERVENT_BUFFER
    case OP_GSBYNAME:
    case OP_GSBYPORT:
    case OP_GSERVENT:
	{
#ifdef PERL_REENTRANT_MAXSIZE
	    if (PL_reentrant_buffer->_servent_size <=
		PERL_REENTRANT_MAXSIZE / 2)
#endif
	    {
		PL_reentrant_buffer->_servent_size *= 2;
		Renew(PL_reentrant_buffer->_servent_buffer,
		      PL_reentrant_buffer->_servent_size, char);
		switch (PL_op->op_type) {
	        case OP_GSBYNAME:
		    p0 = va_arg(ap, void *);
		    p1 = va_arg(ap, void *);
		    retptr = getservbyname((char *)p0, (char *)p1); break;
	        case OP_GSBYPORT:
		    anint = va_arg(ap, int);
		    p0 = va_arg(ap, void *);
		    retptr = getservbyport(anint, (char *)p0); break;
	        case OP_GSERVENT:
		    retptr = getservent(); break;
	        default:
		    SETERRNO(ERANGE, LIB_INVARG);
		    break;
	        }
	    }
	}
	break;
#endif
    default:
	/* Not known how to retry, so just fail. */
	break;
    }

    va_end(ap);
#endif
    return retptr;
}
Commit	Line	Data
10bc17b6 JH	1	/*
	2	* reentr.c
	3	*
4bb101f2	4	* Copyright (C) 2002, 2003, by Larry Wall and others
10bc17b6 JH	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 !!!!!!!
61296642	10	* This file is built by reentr.pl from data in reentr.pl.
10bc17b6 JH	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	*
61296642 DM	15	* This file contains a collection of automatically created wrappers
	16	* (created by running reentr.pl) for reentrant (thread-safe) versions of
	17	* various library calls, such as getpwent_r. The wrapping is done so
	18	* that other files like pp_sys.c calling those library functions need not
	19	* care about the differences between various platforms' idiosyncrasies
	20	* regarding these reentrant interfaces.
10bc17b6 JH	21	*/
	22
	23	#include "EXTERN.h"
	24	#define PERL_IN_REENTR_C
	25	#include "perl.h"
	26	#include "reentr.h"
	27
	28	void
	29	Perl_reentrant_size(pTHX) {
	30	#ifdef USE_REENTRANT_API
8695fa85 SR	31	#define REENTRANTSMALLSIZE 256 /* Make something up. */
8695fa85 SR	32	#define REENTRANTUSUALSIZE 4096 /* Make something up. */
10bc17b6	33	#ifdef HAS_ASCTIME_R
8695fa85	34	PL_reentrant_buffer->_asctime_size = REENTRANTSMALLSIZE;
10bc17b6 JH	35	#endif /* HAS_ASCTIME_R */
	36	#ifdef HAS_CRYPT_R
	37	#endif /* HAS_CRYPT_R */
	38	#ifdef HAS_CTIME_R
8695fa85	39	PL_reentrant_buffer->_ctime_size = REENTRANTSMALLSIZE;
10bc17b6 JH	40	#endif /* HAS_CTIME_R */
	41	#ifdef HAS_DRAND48_R
	42	#endif /* HAS_DRAND48_R */
	43	#ifdef HAS_GETGRNAM_R
0de8cad8 RGS	44	# if defined(HAS_SYSCONF) && defined(_SC_GETGR_R_SIZE_MAX) && !defined(__GLIBC__)
	45	PL_reentrant_buffer->_grent_size = sysconf(_SC_GETGR_R_SIZE_MAX);
	46	if (PL_reentrant_buffer->_grent_size == -1)
	47	PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	48	# else
10bc17b6 JH	49	# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
f7937171	50	PL_reentrant_buffer->_grent_size = SIABUFSIZ;
10bc17b6 JH	51	# else
10bc17b6 JH	52	# ifdef __sgi
f7937171	53	PL_reentrant_buffer->_grent_size = BUFSIZ;
10bc17b6	54	# else
f7937171	55	PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	56	# endif
	57	# endif
	58	# endif
	59	#endif /* HAS_GETGRNAM_R */
	60	#ifdef HAS_GETHOSTBYNAME_R
	61	#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	62	PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	63	#endif
	64	#endif /* HAS_GETHOSTBYNAME_R */
	65	#ifdef HAS_GETLOGIN_R
8695fa85	66	PL_reentrant_buffer->_getlogin_size = REENTRANTSMALLSIZE;
10bc17b6 JH	67	#endif /* HAS_GETLOGIN_R */
	68	#ifdef HAS_GETNETBYNAME_R
	69	#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	70	PL_reentrant_buffer->_netent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	71	#endif
	72	#endif /* HAS_GETNETBYNAME_R */
	73	#ifdef HAS_GETPROTOBYNAME_R
	74	#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	75	PL_reentrant_buffer->_protoent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	76	#endif
	77	#endif /* HAS_GETPROTOBYNAME_R */
	78	#ifdef HAS_GETPWNAM_R
	79	# if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
f7937171 JH	80	PL_reentrant_buffer->_pwent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
	81	if (PL_reentrant_buffer->_pwent_size == -1)
	82	PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	83	# else
10bc17b6 JH	84	# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
f7937171	85	PL_reentrant_buffer->_pwent_size = SIABUFSIZ;
10bc17b6 JH	86	# else
10bc17b6 JH	87	# ifdef __sgi
f7937171	88	PL_reentrant_buffer->_pwent_size = BUFSIZ;
10bc17b6	89	# else
f7937171	90	PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	91	# endif
	92	# endif
	93	# endif
	94	#endif /* HAS_GETPWNAM_R */
	95	#ifdef HAS_GETSERVBYNAME_R
	96	#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
f7937171	97	PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE;
10bc17b6 JH	98	#endif
	99	#endif /* HAS_GETSERVBYNAME_R */
	100	#ifdef HAS_GETSPNAM_R
f7937171 JH	101	# if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
f7937171 JH	102	PL_reentrant_buffer->_spent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
0de8cad8 RGS	103	if (PL_reentrant_buffer->_spent_size == -1)
0de8cad8 RGS	104	PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
f7937171 JH	105	# else
	106	# if defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
	107	PL_reentrant_buffer->_spent_size = SIABUFSIZ;
	108	# else
	109	# ifdef __sgi
	110	PL_reentrant_buffer->_spent_size = BUFSIZ;
	111	# else
	112	PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
	113	# endif
	114	# endif
	115	# endif
10bc17b6 JH	116	#endif /* HAS_GETSPNAM_R */
	117	#ifdef HAS_GMTIME_R
	118	#endif /* HAS_GMTIME_R */
	119	#ifdef HAS_LOCALTIME_R
	120	#endif /* HAS_LOCALTIME_R */
	121	#ifdef HAS_RANDOM_R
	122	#endif /* HAS_RANDOM_R */
	123	#ifdef HAS_READDIR_R
	124	/* This is the size Solaris recommends.
	125	* (though we go static, should use pathconf() instead) */
	126	PL_reentrant_buffer->_readdir_size = sizeof(struct dirent) + MAXPATHLEN + 1;
	127	#endif /* HAS_READDIR_R */
	128	#ifdef HAS_READDIR64_R
	129	/* This is the size Solaris recommends.
	130	* (though we go static, should use pathconf() instead) */
	131	PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1;
	132	#endif /* HAS_READDIR64_R */
	133	#ifdef HAS_SETLOCALE_R
8695fa85	134	PL_reentrant_buffer->_setlocale_size = REENTRANTSMALLSIZE;
10bc17b6	135	#endif /* HAS_SETLOCALE_R */
5cb13b8d JD	136	#ifdef HAS_SRANDOM_R
5cb13b8d JD	137	#endif /* HAS_SRANDOM_R */
10bc17b6	138	#ifdef HAS_STRERROR_R
8695fa85	139	PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
10bc17b6 JH	140	#endif /* HAS_STRERROR_R */
10bc17b6 JH	141	#ifdef HAS_TTYNAME_R
8695fa85	142	PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
10bc17b6 JH	143	#endif /* HAS_TTYNAME_R */
	144
	145	#endif /* USE_REENTRANT_API */
	146	}
	147
	148	void
	149	Perl_reentrant_init(pTHX) {
	150	#ifdef USE_REENTRANT_API
	151	New(31337, PL_reentrant_buffer, 1, REENTR);
	152	Perl_reentrant_size(aTHX);
	153	#ifdef HAS_ASCTIME_R
	154	New(31338, PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
	155	#endif /* HAS_ASCTIME_R */
	156	#ifdef HAS_CRYPT_R
05404ffe JH	157	#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
05404ffe JH	158	PL_reentrant_buffer->_crypt_struct_buffer = 0;
10bc17b6 JH	159	#endif
	160	#endif /* HAS_CRYPT_R */
	161	#ifdef HAS_CTIME_R
	162	New(31338, PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
	163	#endif /* HAS_CTIME_R */
	164	#ifdef HAS_DRAND48_R
	165	#endif /* HAS_DRAND48_R */
	166	#ifdef HAS_GETGRNAM_R
f7937171 JH	167	# ifdef USE_GRENT_FPTR
f7937171 JH	168	PL_reentrant_buffer->_grent_fptr = NULL;
10bc17b6	169	# endif
f7937171	170	New(31338, PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
10bc17b6 JH	171	#endif /* HAS_GETGRNAM_R */
	172	#ifdef HAS_GETHOSTBYNAME_R
	173	#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	174	New(31338, PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
10bc17b6 JH	175	#endif
	176	#endif /* HAS_GETHOSTBYNAME_R */
	177	#ifdef HAS_GETLOGIN_R
	178	New(31338, PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
	179	#endif /* HAS_GETLOGIN_R */
	180	#ifdef HAS_GETNETBYNAME_R
	181	#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	182	New(31338, PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
10bc17b6 JH	183	#endif
	184	#endif /* HAS_GETNETBYNAME_R */
	185	#ifdef HAS_GETPROTOBYNAME_R
	186	#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	187	New(31338, PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
10bc17b6 JH	188	#endif
	189	#endif /* HAS_GETPROTOBYNAME_R */
	190	#ifdef HAS_GETPWNAM_R
f7937171 JH	191	# ifdef USE_PWENT_FPTR
f7937171 JH	192	PL_reentrant_buffer->_pwent_fptr = NULL;
10bc17b6	193	# endif
f7937171	194	New(31338, PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
10bc17b6 JH	195	#endif /* HAS_GETPWNAM_R */
	196	#ifdef HAS_GETSERVBYNAME_R
	197	#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
f7937171	198	New(31338, PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
10bc17b6 JH	199	#endif
	200	#endif /* HAS_GETSERVBYNAME_R */
	201	#ifdef HAS_GETSPNAM_R
f7937171 JH	202	# ifdef USE_SPENT_FPTR
	203	PL_reentrant_buffer->_spent_fptr = NULL;
	204	# endif
	205	New(31338, PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
10bc17b6 JH	206	#endif /* HAS_GETSPNAM_R */
	207	#ifdef HAS_GMTIME_R
	208	#endif /* HAS_GMTIME_R */
	209	#ifdef HAS_LOCALTIME_R
	210	#endif /* HAS_LOCALTIME_R */
	211	#ifdef HAS_RANDOM_R
	212	#endif /* HAS_RANDOM_R */
	213	#ifdef HAS_READDIR_R
	214	PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
	215	#endif /* HAS_READDIR_R */
	216	#ifdef HAS_READDIR64_R
	217	PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
	218	#endif /* HAS_READDIR64_R */
	219	#ifdef HAS_SETLOCALE_R
	220	New(31338, PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
	221	#endif /* HAS_SETLOCALE_R */
5cb13b8d JD	222	#ifdef HAS_SRANDOM_R
5cb13b8d JD	223	#endif /* HAS_SRANDOM_R */
10bc17b6 JH	224	#ifdef HAS_STRERROR_R
	225	New(31338, PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
	226	#endif /* HAS_STRERROR_R */
	227	#ifdef HAS_TTYNAME_R
	228	New(31338, PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
	229	#endif /* HAS_TTYNAME_R */
	230
	231	#endif /* USE_REENTRANT_API */
	232	}
	233
	234	void
	235	Perl_reentrant_free(pTHX) {
	236	#ifdef USE_REENTRANT_API
	237	#ifdef HAS_ASCTIME_R
	238	Safefree(PL_reentrant_buffer->_asctime_buffer);
	239	#endif /* HAS_ASCTIME_R */
	240	#ifdef HAS_CRYPT_R
05404ffe JH	241	#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
	242	Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
	243	#endif
10bc17b6 JH	244	#endif /* HAS_CRYPT_R */
	245	#ifdef HAS_CTIME_R
	246	Safefree(PL_reentrant_buffer->_ctime_buffer);
	247	#endif /* HAS_CTIME_R */
	248	#ifdef HAS_DRAND48_R
	249	#endif /* HAS_DRAND48_R */
	250	#ifdef HAS_GETGRNAM_R
f7937171	251	Safefree(PL_reentrant_buffer->_grent_buffer);
10bc17b6 JH	252	#endif /* HAS_GETGRNAM_R */
	253	#ifdef HAS_GETHOSTBYNAME_R
	254	#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	255	Safefree(PL_reentrant_buffer->_hostent_buffer);
10bc17b6 JH	256	#endif
	257	#endif /* HAS_GETHOSTBYNAME_R */
	258	#ifdef HAS_GETLOGIN_R
	259	Safefree(PL_reentrant_buffer->_getlogin_buffer);
	260	#endif /* HAS_GETLOGIN_R */
	261	#ifdef HAS_GETNETBYNAME_R
	262	#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	263	Safefree(PL_reentrant_buffer->_netent_buffer);
10bc17b6 JH	264	#endif
	265	#endif /* HAS_GETNETBYNAME_R */
	266	#ifdef HAS_GETPROTOBYNAME_R
	267	#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
f7937171	268	Safefree(PL_reentrant_buffer->_protoent_buffer);
10bc17b6 JH	269	#endif
	270	#endif /* HAS_GETPROTOBYNAME_R */
	271	#ifdef HAS_GETPWNAM_R
f7937171	272	Safefree(PL_reentrant_buffer->_pwent_buffer);
10bc17b6 JH	273	#endif /* HAS_GETPWNAM_R */
	274	#ifdef HAS_GETSERVBYNAME_R
	275	#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
f7937171	276	Safefree(PL_reentrant_buffer->_servent_buffer);
10bc17b6 JH	277	#endif
	278	#endif /* HAS_GETSERVBYNAME_R */
	279	#ifdef HAS_GETSPNAM_R
f7937171	280	Safefree(PL_reentrant_buffer->_spent_buffer);
10bc17b6 JH	281	#endif /* HAS_GETSPNAM_R */
	282	#ifdef HAS_GMTIME_R
	283	#endif /* HAS_GMTIME_R */
	284	#ifdef HAS_LOCALTIME_R
	285	#endif /* HAS_LOCALTIME_R */
	286	#ifdef HAS_RANDOM_R
	287	#endif /* HAS_RANDOM_R */
	288	#ifdef HAS_READDIR_R
	289	Safefree(PL_reentrant_buffer->_readdir_struct);
	290	#endif /* HAS_READDIR_R */
	291	#ifdef HAS_READDIR64_R
	292	Safefree(PL_reentrant_buffer->_readdir64_struct);
	293	#endif /* HAS_READDIR64_R */
	294	#ifdef HAS_SETLOCALE_R
	295	Safefree(PL_reentrant_buffer->_setlocale_buffer);
	296	#endif /* HAS_SETLOCALE_R */
5cb13b8d JD	297	#ifdef HAS_SRANDOM_R
5cb13b8d JD	298	#endif /* HAS_SRANDOM_R */
10bc17b6 JH	299	#ifdef HAS_STRERROR_R
	300	Safefree(PL_reentrant_buffer->_strerror_buffer);
	301	#endif /* HAS_STRERROR_R */
	302	#ifdef HAS_TTYNAME_R
	303	Safefree(PL_reentrant_buffer->_ttyname_buffer);
	304	#endif /* HAS_TTYNAME_R */
	305
	306	Safefree(PL_reentrant_buffer);
	307	#endif /* USE_REENTRANT_API */
	308	}
	309
edd309b7 JH	310	void*
	311	Perl_reentrant_retry(const char *f, ...)
	312	{
	313	dTHX;
	314	void *retptr = NULL;
	315	#ifdef USE_REENTRANT_API
0891a229	316	# 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)
e3410746 SR	317	void *p0;
e3410746 SR	318	# endif
f7937171	319	# if defined(USE_SERVENT_BUFFER)
e3410746 SR	320	void *p1;
e3410746 SR	321	# endif
f7937171	322	# if defined(USE_HOSTENT_BUFFER)
edd309b7	323	size_t asize;
e3410746	324	# endif
f7937171	325	# if defined(USE_HOSTENT_BUFFER) \|\| defined(USE_NETENT_BUFFER) \|\| defined(USE_PROTOENT_BUFFER) \|\| defined(USE_SERVENT_BUFFER)
edd309b7	326	int anint;
e3410746	327	# endif
edd309b7 JH	328	va_list ap;
	329
	330	va_start(ap, f);
	331
edd309b7	332	switch (PL_op->op_type) {
f7937171	333	#ifdef USE_HOSTENT_BUFFER
edd309b7 JH	334	case OP_GHBYADDR:
	335	case OP_GHBYNAME:
	336	case OP_GHOSTENT:
	337	{
af685957 JH	338	#ifdef PERL_REENTRANT_MAXSIZE
	339	if (PL_reentrant_buffer->_hostent_size <=
	340	PERL_REENTRANT_MAXSIZE / 2)
	341	#endif
	342	{
f7937171 JH	343	PL_reentrant_buffer->_hostent_size *= 2;
	344	Renew(PL_reentrant_buffer->_hostent_buffer,
	345	PL_reentrant_buffer->_hostent_size, char);
edd309b7 JH	346	switch (PL_op->op_type) {
	347	case OP_GHBYADDR:
	348	p0 = va_arg(ap, void *);
	349	asize = va_arg(ap, size_t);
	350	anint = va_arg(ap, int);
	351	retptr = gethostbyaddr(p0, asize, anint); break;
	352	case OP_GHBYNAME:
	353	p0 = va_arg(ap, void *);
f6f0b69b	354	retptr = gethostbyname((char *)p0); break;
edd309b7 JH	355	case OP_GHOSTENT:
	356	retptr = gethostent(); break;
	357	default:
0de8cad8	358	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	359	break;
	360	}
	361	}
	362	}
	363	break;
	364	#endif
f7937171	365	#ifdef USE_GRENT_BUFFER
edd309b7 JH	366	case OP_GGRNAM:
	367	case OP_GGRGID:
	368	case OP_GGRENT:
	369	{
af685957 JH	370	#ifdef PERL_REENTRANT_MAXSIZE
	371	if (PL_reentrant_buffer->_grent_size <=
	372	PERL_REENTRANT_MAXSIZE / 2)
	373	#endif
	374	{
edd309b7	375	Gid_t gid;
f7937171 JH	376	PL_reentrant_buffer->_grent_size *= 2;
	377	Renew(PL_reentrant_buffer->_grent_buffer,
	378	PL_reentrant_buffer->_grent_size, char);
edd309b7 JH	379	switch (PL_op->op_type) {
	380	case OP_GGRNAM:
	381	p0 = va_arg(ap, void *);
f6f0b69b	382	retptr = getgrnam((char *)p0); break;
edd309b7	383	case OP_GGRGID:
ab2b559b JH	384	#if Gid_t_size < INTSIZE
	385	gid = (Gid_t)va_arg(ap, int);
	386	#else
edd309b7	387	gid = va_arg(ap, Gid_t);
ab2b559b	388	#endif
edd309b7 JH	389	retptr = getgrgid(gid); break;
	390	case OP_GGRENT:
	391	retptr = getgrent(); break;
	392	default:
0de8cad8	393	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	394	break;
	395	}
	396	}
	397	}
	398	break;
	399	#endif
f7937171	400	#ifdef USE_NETENT_BUFFER
edd309b7 JH	401	case OP_GNBYADDR:
	402	case OP_GNBYNAME:
	403	case OP_GNETENT:
	404	{
af685957 JH	405	#ifdef PERL_REENTRANT_MAXSIZE
	406	if (PL_reentrant_buffer->_netent_size <=
	407	PERL_REENTRANT_MAXSIZE / 2)
	408	#endif
	409	{
edd309b7	410	Netdb_net_t net;
f7937171 JH	411	PL_reentrant_buffer->_netent_size *= 2;
	412	Renew(PL_reentrant_buffer->_netent_buffer,
	413	PL_reentrant_buffer->_netent_size, char);
edd309b7 JH	414	switch (PL_op->op_type) {
	415	case OP_GNBYADDR:
	416	net = va_arg(ap, Netdb_net_t);
	417	anint = va_arg(ap, int);
	418	retptr = getnetbyaddr(net, anint); break;
	419	case OP_GNBYNAME:
	420	p0 = va_arg(ap, void *);
f6f0b69b	421	retptr = getnetbyname((char *)p0); break;
edd309b7 JH	422	case OP_GNETENT:
	423	retptr = getnetent(); break;
	424	default:
0de8cad8	425	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	426	break;
	427	}
	428	}
	429	}
	430	break;
	431	#endif
f7937171	432	#ifdef USE_PWENT_BUFFER
edd309b7 JH	433	case OP_GPWNAM:
	434	case OP_GPWUID:
	435	case OP_GPWENT:
	436	{
af685957 JH	437	#ifdef PERL_REENTRANT_MAXSIZE
	438	if (PL_reentrant_buffer->_pwent_size <=
	439	PERL_REENTRANT_MAXSIZE / 2)
	440	#endif
	441	{
edd309b7	442	Uid_t uid;
f7937171 JH	443	PL_reentrant_buffer->_pwent_size *= 2;
	444	Renew(PL_reentrant_buffer->_pwent_buffer,
	445	PL_reentrant_buffer->_pwent_size, char);
edd309b7 JH	446	switch (PL_op->op_type) {
	447	case OP_GPWNAM:
	448	p0 = va_arg(ap, void *);
f6f0b69b	449	retptr = getpwnam((char *)p0); break;
edd309b7	450	case OP_GPWUID:
ab2b559b JH	451	#if Uid_t_size < INTSIZE
	452	uid = (Uid_t)va_arg(ap, int);
	453	#else
edd309b7	454	uid = va_arg(ap, Uid_t);
ab2b559b	455	#endif
edd309b7 JH	456	retptr = getpwuid(uid); break;
	457	case OP_GPWENT:
	458	retptr = getpwent(); break;
	459	default:
0de8cad8	460	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	461	break;
	462	}
	463	}
	464	}
	465	break;
	466	#endif
f7937171	467	#ifdef USE_PROTOENT_BUFFER
edd309b7 JH	468	case OP_GPBYNAME:
	469	case OP_GPBYNUMBER:
	470	case OP_GPROTOENT:
	471	{
af685957 JH	472	#ifdef PERL_REENTRANT_MAXSIZE
	473	if (PL_reentrant_buffer->_protoent_size <=
	474	PERL_REENTRANT_MAXSIZE / 2)
	475	#endif
	476	{
f7937171 JH	477	PL_reentrant_buffer->_protoent_size *= 2;
	478	Renew(PL_reentrant_buffer->_protoent_buffer,
	479	PL_reentrant_buffer->_protoent_size, char);
edd309b7 JH	480	switch (PL_op->op_type) {
	481	case OP_GPBYNAME:
	482	p0 = va_arg(ap, void *);
f6f0b69b	483	retptr = getprotobyname((char *)p0); break;
edd309b7 JH	484	case OP_GPBYNUMBER:
	485	anint = va_arg(ap, int);
	486	retptr = getprotobynumber(anint); break;
	487	case OP_GPROTOENT:
	488	retptr = getprotoent(); break;
	489	default:
0de8cad8	490	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	491	break;
	492	}
	493	}
	494	}
	495	break;
	496	#endif
f7937171	497	#ifdef USE_SERVENT_BUFFER
edd309b7 JH	498	case OP_GSBYNAME:
	499	case OP_GSBYPORT:
	500	case OP_GSERVENT:
	501	{
af685957 JH	502	#ifdef PERL_REENTRANT_MAXSIZE
	503	if (PL_reentrant_buffer->_servent_size <=
	504	PERL_REENTRANT_MAXSIZE / 2)
	505	#endif
	506	{
f7937171 JH	507	PL_reentrant_buffer->_servent_size *= 2;
	508	Renew(PL_reentrant_buffer->_servent_buffer,
	509	PL_reentrant_buffer->_servent_size, char);
edd309b7 JH	510	switch (PL_op->op_type) {
	511	case OP_GSBYNAME:
	512	p0 = va_arg(ap, void *);
	513	p1 = va_arg(ap, void *);
f6f0b69b	514	retptr = getservbyname((char )p0, (char )p1); break;
edd309b7 JH	515	case OP_GSBYPORT:
	516	anint = va_arg(ap, int);
	517	p0 = va_arg(ap, void *);
f6f0b69b	518	retptr = getservbyport(anint, (char *)p0); break;
edd309b7 JH	519	case OP_GSERVENT:
	520	retptr = getservent(); break;
	521	default:
0de8cad8	522	SETERRNO(ERANGE, LIB_INVARG);
edd309b7 JH	523	break;
	524	}
	525	}
	526	}
	527	break;
	528	#endif
	529	default:
	530	/* Not known how to retry, so just fail. */
	531	break;
	532	}
	533
	534	va_end(ap);
	535	#endif
	536	return retptr;
	537	}
	538