519 lines
16 KiB
C
519 lines
16 KiB
C
/* -*- buffer-read-only: t -*-
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*
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* reentr.c
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*
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* Copyright (C) 2002, 2003, 2005, 2006, 2007 by Larry Wall and others
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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* !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
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* This file is built by regen/reentr.pl from data in regen/reentr.pl.
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* Any changes made here will be lost!
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*/
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/*
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* "Saruman," I said, standing away from him, "only one hand at a time can
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* wield the One, and you know that well, so do not trouble to say we!"
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*
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* [p.260 of _The Lord of the Rings_, II/ii: "The Council of Elrond"]
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*/
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/*
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* This file contains a collection of automatically created wrappers
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* (created by running reentr.pl) for reentrant (thread-safe) versions of
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* various library calls, such as getpwent_r. The wrapping is done so
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* that other files like pp_sys.c calling those library functions need not
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* care about the differences between various platforms' idiosyncrasies
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* regarding these reentrant interfaces.
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*/
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#include "EXTERN.h"
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#define PERL_IN_REENTR_C
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#include "perl.h"
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#include "reentr.h"
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#define RenewDouble(data_pointer, size_pointer, type) \
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STMT_START { \
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const size_t size = *(size_pointer) * 2; \
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Renew((data_pointer), (size), type); \
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*(size_pointer) = size; \
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} STMT_END
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void
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Perl_reentrant_size(pTHX) {
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PERL_UNUSED_CONTEXT;
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#ifdef USE_REENTRANT_API
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#define REENTRANTSMALLSIZE 256 /* Make something up. */
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#define REENTRANTUSUALSIZE 4096 /* Make something up. */
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#ifdef HAS_ASCTIME_R
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PL_reentrant_buffer->_asctime_size = REENTRANTSMALLSIZE;
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#endif /* HAS_ASCTIME_R */
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#ifdef HAS_CRYPT_R
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#endif /* HAS_CRYPT_R */
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#ifdef HAS_CTIME_R
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PL_reentrant_buffer->_ctime_size = REENTRANTSMALLSIZE;
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#endif /* HAS_CTIME_R */
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#ifdef HAS_GETGRNAM_R
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# if defined(HAS_SYSCONF) && defined(_SC_GETGR_R_SIZE_MAX) && !defined(__GLIBC__)
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PL_reentrant_buffer->_grent_size = sysconf(_SC_GETGR_R_SIZE_MAX);
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if (PL_reentrant_buffer->_grent_size == (size_t) -1)
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PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
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# elif defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
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PL_reentrant_buffer->_grent_size = SIABUFSIZ;
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# elif defined(__sgi)
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PL_reentrant_buffer->_grent_size = BUFSIZ;
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# else
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PL_reentrant_buffer->_grent_size = REENTRANTUSUALSIZE;
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# endif
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#endif /* HAS_GETGRNAM_R */
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#ifdef HAS_GETHOSTBYNAME_R
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#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE;
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#endif
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#endif /* HAS_GETHOSTBYNAME_R */
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#ifdef HAS_GETLOGIN_R
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PL_reentrant_buffer->_getlogin_size = REENTRANTSMALLSIZE;
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#endif /* HAS_GETLOGIN_R */
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#ifdef HAS_GETNETBYNAME_R
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#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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PL_reentrant_buffer->_netent_size = REENTRANTUSUALSIZE;
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#endif
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#endif /* HAS_GETNETBYNAME_R */
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#ifdef HAS_GETPROTOBYNAME_R
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#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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PL_reentrant_buffer->_protoent_size = REENTRANTUSUALSIZE;
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#endif
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#endif /* HAS_GETPROTOBYNAME_R */
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#ifdef HAS_GETPWNAM_R
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# if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
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PL_reentrant_buffer->_pwent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
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if (PL_reentrant_buffer->_pwent_size == (size_t) -1)
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PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
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# elif defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
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PL_reentrant_buffer->_pwent_size = SIABUFSIZ;
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# elif defined(__sgi)
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PL_reentrant_buffer->_pwent_size = BUFSIZ;
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# else
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PL_reentrant_buffer->_pwent_size = REENTRANTUSUALSIZE;
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# endif
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#endif /* HAS_GETPWNAM_R */
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#ifdef HAS_GETSERVBYNAME_R
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#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
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PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE;
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#endif
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#endif /* HAS_GETSERVBYNAME_R */
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#ifdef HAS_GETSPNAM_R
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# if defined(HAS_SYSCONF) && defined(_SC_GETPW_R_SIZE_MAX) && !defined(__GLIBC__)
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PL_reentrant_buffer->_spent_size = sysconf(_SC_GETPW_R_SIZE_MAX);
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if (PL_reentrant_buffer->_spent_size == (size_t) -1)
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PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
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# elif defined(__osf__) && defined(__alpha) && defined(SIABUFSIZ)
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PL_reentrant_buffer->_spent_size = SIABUFSIZ;
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# elif defined(__sgi)
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PL_reentrant_buffer->_spent_size = BUFSIZ;
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# else
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PL_reentrant_buffer->_spent_size = REENTRANTUSUALSIZE;
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# endif
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#endif /* HAS_GETSPNAM_R */
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#ifdef HAS_READDIR_R
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/* This is the size Solaris recommends.
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* (though we go static, should use pathconf() instead) */
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PL_reentrant_buffer->_readdir_size = sizeof(struct dirent) + MAXPATHLEN + 1;
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#endif /* HAS_READDIR_R */
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#ifdef HAS_READDIR64_R
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/* This is the size Solaris recommends.
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* (though we go static, should use pathconf() instead) */
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PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1;
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#endif /* HAS_READDIR64_R */
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#ifdef HAS_SETLOCALE_R
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PL_reentrant_buffer->_setlocale_size = REENTRANTSMALLSIZE;
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#endif /* HAS_SETLOCALE_R */
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#ifdef HAS_STRERROR_R
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PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE;
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#endif /* HAS_STRERROR_R */
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#ifdef HAS_TTYNAME_R
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PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE;
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#endif /* HAS_TTYNAME_R */
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#endif /* USE_REENTRANT_API */
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}
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void
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Perl_reentrant_init(pTHX) {
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PERL_UNUSED_CONTEXT;
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#ifdef USE_REENTRANT_API
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Newx(PL_reentrant_buffer, 1, REENTR);
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Perl_reentrant_size(aTHX);
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#ifdef HAS_ASCTIME_R
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Newx(PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char);
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#endif /* HAS_ASCTIME_R */
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#ifdef HAS_CRYPT_R
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#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
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PL_reentrant_buffer->_crypt_struct_buffer = 0;
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#endif
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#endif /* HAS_CRYPT_R */
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#ifdef HAS_CTIME_R
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Newx(PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
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#endif /* HAS_CTIME_R */
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#ifdef HAS_GETGRNAM_R
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# ifdef USE_GRENT_FPTR
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PL_reentrant_buffer->_grent_fptr = NULL;
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# endif
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Newx(PL_reentrant_buffer->_grent_buffer, PL_reentrant_buffer->_grent_size, char);
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#endif /* HAS_GETGRNAM_R */
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#ifdef HAS_GETHOSTBYNAME_R
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#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Newx(PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
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#endif
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#endif /* HAS_GETHOSTBYNAME_R */
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#ifdef HAS_GETLOGIN_R
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Newx(PL_reentrant_buffer->_getlogin_buffer, PL_reentrant_buffer->_getlogin_size, char);
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#endif /* HAS_GETLOGIN_R */
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#ifdef HAS_GETNETBYNAME_R
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#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Newx(PL_reentrant_buffer->_netent_buffer, PL_reentrant_buffer->_netent_size, char);
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#endif
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#endif /* HAS_GETNETBYNAME_R */
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#ifdef HAS_GETPROTOBYNAME_R
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#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Newx(PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char);
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#endif
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#endif /* HAS_GETPROTOBYNAME_R */
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#ifdef HAS_GETPWNAM_R
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# ifdef USE_PWENT_FPTR
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PL_reentrant_buffer->_pwent_fptr = NULL;
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# endif
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Newx(PL_reentrant_buffer->_pwent_buffer, PL_reentrant_buffer->_pwent_size, char);
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#endif /* HAS_GETPWNAM_R */
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#ifdef HAS_GETSERVBYNAME_R
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#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
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Newx(PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char);
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#endif
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#endif /* HAS_GETSERVBYNAME_R */
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#ifdef HAS_GETSPNAM_R
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# ifdef USE_SPENT_FPTR
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PL_reentrant_buffer->_spent_fptr = NULL;
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# endif
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Newx(PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
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#endif /* HAS_GETSPNAM_R */
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#ifdef HAS_READDIR_R
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PL_reentrant_buffer->_readdir_struct = (struct dirent*)safemalloc(PL_reentrant_buffer->_readdir_size);
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#endif /* HAS_READDIR_R */
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#ifdef HAS_READDIR64_R
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PL_reentrant_buffer->_readdir64_struct = (struct dirent64*)safemalloc(PL_reentrant_buffer->_readdir64_size);
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#endif /* HAS_READDIR64_R */
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#ifdef HAS_SETLOCALE_R
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Newx(PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
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#endif /* HAS_SETLOCALE_R */
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#ifdef HAS_STRERROR_R
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Newx(PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
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#endif /* HAS_STRERROR_R */
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#ifdef HAS_TTYNAME_R
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Newx(PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
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#endif /* HAS_TTYNAME_R */
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#endif /* USE_REENTRANT_API */
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}
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void
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Perl_reentrant_free(pTHX) {
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PERL_UNUSED_CONTEXT;
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#ifdef USE_REENTRANT_API
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#ifdef HAS_ASCTIME_R
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Safefree(PL_reentrant_buffer->_asctime_buffer);
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#endif /* HAS_ASCTIME_R */
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#ifdef HAS_CRYPT_R
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#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD
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Safefree(PL_reentrant_buffer->_crypt_struct_buffer);
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#endif
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#endif /* HAS_CRYPT_R */
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#ifdef HAS_CTIME_R
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Safefree(PL_reentrant_buffer->_ctime_buffer);
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#endif /* HAS_CTIME_R */
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#ifdef HAS_GETGRNAM_R
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Safefree(PL_reentrant_buffer->_grent_buffer);
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#endif /* HAS_GETGRNAM_R */
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#ifdef HAS_GETHOSTBYNAME_R
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#if !(GETHOSTBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Safefree(PL_reentrant_buffer->_hostent_buffer);
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#endif
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#endif /* HAS_GETHOSTBYNAME_R */
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#ifdef HAS_GETLOGIN_R
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Safefree(PL_reentrant_buffer->_getlogin_buffer);
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#endif /* HAS_GETLOGIN_R */
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#ifdef HAS_GETNETBYNAME_R
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#if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Safefree(PL_reentrant_buffer->_netent_buffer);
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#endif
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#endif /* HAS_GETNETBYNAME_R */
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#ifdef HAS_GETPROTOBYNAME_R
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#if !(GETPROTOBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD)
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Safefree(PL_reentrant_buffer->_protoent_buffer);
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#endif
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#endif /* HAS_GETPROTOBYNAME_R */
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#ifdef HAS_GETPWNAM_R
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Safefree(PL_reentrant_buffer->_pwent_buffer);
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#endif /* HAS_GETPWNAM_R */
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#ifdef HAS_GETSERVBYNAME_R
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#if !(GETSERVBYNAME_R_PROTO == REENTRANT_PROTO_I_CCSD)
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Safefree(PL_reentrant_buffer->_servent_buffer);
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#endif
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#endif /* HAS_GETSERVBYNAME_R */
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#ifdef HAS_GETSPNAM_R
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Safefree(PL_reentrant_buffer->_spent_buffer);
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#endif /* HAS_GETSPNAM_R */
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#ifdef HAS_READDIR_R
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Safefree(PL_reentrant_buffer->_readdir_struct);
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#endif /* HAS_READDIR_R */
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#ifdef HAS_READDIR64_R
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Safefree(PL_reentrant_buffer->_readdir64_struct);
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#endif /* HAS_READDIR64_R */
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#ifdef HAS_SETLOCALE_R
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Safefree(PL_reentrant_buffer->_setlocale_buffer);
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#endif /* HAS_SETLOCALE_R */
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#ifdef HAS_STRERROR_R
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Safefree(PL_reentrant_buffer->_strerror_buffer);
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#endif /* HAS_STRERROR_R */
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#ifdef HAS_TTYNAME_R
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Safefree(PL_reentrant_buffer->_ttyname_buffer);
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#endif /* HAS_TTYNAME_R */
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Safefree(PL_reentrant_buffer);
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#endif /* USE_REENTRANT_API */
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}
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void*
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Perl_reentrant_retry(const char *f, ...)
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{
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void *retptr = NULL;
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va_list ap;
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#ifdef USE_REENTRANT_API
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dTHX;
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/* Easier to special case this here than in embed.pl. (Look at what it
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generates for proto.h) */
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PERL_ARGS_ASSERT_REENTRANT_RETRY;
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#endif
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va_start(ap, f);
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{
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#ifdef USE_REENTRANT_API
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# 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)
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void *p0;
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# endif
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# if defined(USE_SERVENT_BUFFER)
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void *p1;
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# endif
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# if defined(USE_HOSTENT_BUFFER)
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size_t asize;
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# endif
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# if defined(USE_HOSTENT_BUFFER) || defined(USE_NETENT_BUFFER) || defined(USE_PROTOENT_BUFFER) || defined(USE_SERVENT_BUFFER)
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int anint;
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# endif
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switch (PL_op->op_type) {
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#ifdef USE_HOSTENT_BUFFER
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case OP_GHBYADDR:
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case OP_GHBYNAME:
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case OP_GHOSTENT:
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{
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#ifdef PERL_REENTRANT_MAXSIZE
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if (PL_reentrant_buffer->_hostent_size <=
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PERL_REENTRANT_MAXSIZE / 2)
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#endif
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{
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RenewDouble(PL_reentrant_buffer->_hostent_buffer,
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&PL_reentrant_buffer->_hostent_size, char);
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switch (PL_op->op_type) {
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case OP_GHBYADDR:
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p0 = va_arg(ap, void *);
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asize = va_arg(ap, size_t);
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anint = va_arg(ap, int);
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retptr = gethostbyaddr(p0, asize, anint); break;
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case OP_GHBYNAME:
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p0 = va_arg(ap, void *);
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retptr = gethostbyname((char *)p0); break;
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case OP_GHOSTENT:
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retptr = gethostent(); break;
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default:
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SETERRNO(ERANGE, LIB_INVARG);
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break;
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}
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}
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}
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break;
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#endif
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#ifdef USE_GRENT_BUFFER
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case OP_GGRNAM:
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case OP_GGRGID:
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case OP_GGRENT:
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{
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#ifdef PERL_REENTRANT_MAXSIZE
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if (PL_reentrant_buffer->_grent_size <=
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PERL_REENTRANT_MAXSIZE / 2)
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#endif
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{
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Gid_t gid;
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RenewDouble(PL_reentrant_buffer->_grent_buffer,
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&PL_reentrant_buffer->_grent_size, char);
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switch (PL_op->op_type) {
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case OP_GGRNAM:
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p0 = va_arg(ap, void *);
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retptr = getgrnam((char *)p0); break;
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case OP_GGRGID:
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#if Gid_t_size < INTSIZE
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gid = (Gid_t)va_arg(ap, int);
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#else
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gid = va_arg(ap, Gid_t);
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#endif
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retptr = getgrgid(gid); break;
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case OP_GGRENT:
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retptr = getgrent(); break;
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default:
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SETERRNO(ERANGE, LIB_INVARG);
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break;
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}
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}
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}
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break;
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#endif
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#ifdef USE_NETENT_BUFFER
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case OP_GNBYADDR:
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case OP_GNBYNAME:
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case OP_GNETENT:
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{
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#ifdef PERL_REENTRANT_MAXSIZE
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if (PL_reentrant_buffer->_netent_size <=
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PERL_REENTRANT_MAXSIZE / 2)
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#endif
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{
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Netdb_net_t net;
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RenewDouble(PL_reentrant_buffer->_netent_buffer,
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&PL_reentrant_buffer->_netent_size, char);
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switch (PL_op->op_type) {
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case OP_GNBYADDR:
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net = va_arg(ap, Netdb_net_t);
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anint = va_arg(ap, int);
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retptr = getnetbyaddr(net, anint); break;
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case OP_GNBYNAME:
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p0 = va_arg(ap, void *);
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retptr = getnetbyname((char *)p0); break;
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case OP_GNETENT:
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retptr = getnetent(); break;
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default:
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SETERRNO(ERANGE, LIB_INVARG);
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break;
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}
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}
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}
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break;
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#endif
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#ifdef USE_PWENT_BUFFER
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case OP_GPWNAM:
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case OP_GPWUID:
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case OP_GPWENT:
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{
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#ifdef PERL_REENTRANT_MAXSIZE
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if (PL_reentrant_buffer->_pwent_size <=
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PERL_REENTRANT_MAXSIZE / 2)
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#endif
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{
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Uid_t uid;
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RenewDouble(PL_reentrant_buffer->_pwent_buffer,
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&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;
|
|
#if defined(HAS_GETPWENT) || defined(HAS_GETPWENT_R)
|
|
case OP_GPWENT:
|
|
retptr = getpwent(); break;
|
|
#endif
|
|
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
|
|
{
|
|
RenewDouble(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
|
|
{
|
|
RenewDouble(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;
|
|
}
|
|
#else
|
|
PERL_UNUSED_ARG(f);
|
|
#endif
|
|
}
|
|
va_end(ap);
|
|
return retptr;
|
|
}
|
|
|
|
/* ex: set ro: */
|