forked from schacon/perl
/
reentr.c
523 lines (513 loc) · 15.7 KB
/
reentr.c
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/* -*- buffer-read-only: t -*-
*
* reentr.c
*
* Copyright (C) 2002, 2003, 2005, 2006, 2007 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 regen/reentr.pl from data in regen/reentr.pl.
* Any changes made here will be lost!
*
* "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) {
PERL_UNUSED_CONTEXT;
#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_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 == (size_t) -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 == (size_t) -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 == (size_t) -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_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_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) {
PERL_UNUSED_CONTEXT;
#ifdef USE_REENTRANT_API
Newx(PL_reentrant_buffer, 1, REENTR);
Perl_reentrant_size(aTHX);
#ifdef HAS_ASCTIME_R
Newx(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
Newx(PL_reentrant_buffer->_ctime_buffer, PL_reentrant_buffer->_ctime_size, char);
#endif /* HAS_CTIME_R */
#ifdef HAS_GETGRNAM_R
# ifdef USE_GRENT_FPTR
PL_reentrant_buffer->_grent_fptr = NULL;
# endif
Newx(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)
Newx(PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char);
#endif
#endif /* HAS_GETHOSTBYNAME_R */
#ifdef HAS_GETLOGIN_R
Newx(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)
Newx(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)
Newx(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
Newx(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)
Newx(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
Newx(PL_reentrant_buffer->_spent_buffer, PL_reentrant_buffer->_spent_size, char);
#endif /* HAS_GETSPNAM_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
Newx(PL_reentrant_buffer->_setlocale_buffer, PL_reentrant_buffer->_setlocale_size, char);
#endif /* HAS_SETLOCALE_R */
#ifdef HAS_STRERROR_R
Newx(PL_reentrant_buffer->_strerror_buffer, PL_reentrant_buffer->_strerror_size, char);
#endif /* HAS_STRERROR_R */
#ifdef HAS_TTYNAME_R
Newx(PL_reentrant_buffer->_ttyname_buffer, PL_reentrant_buffer->_ttyname_size, char);
#endif /* HAS_TTYNAME_R */
#endif /* USE_REENTRANT_API */
}
void
Perl_reentrant_free(pTHX) {
PERL_UNUSED_CONTEXT;
#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_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_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_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, ...)
{
void *retptr = NULL;
va_list ap;
#ifdef USE_REENTRANT_API
dTHX;
/* Easier to special case this here than in embed.pl. (Look at what it
generates for proto.h) */
PERL_ARGS_ASSERT_REENTRANT_RETRY;
#endif
va_start(ap, f);
{
#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
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;
#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
{
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;
}
#else
PERL_UNUSED_ARG(f);
#endif
}
va_end(ap);
return retptr;
}
/* ex: set ro: */