X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=reentr.c;h=a085b711afa681c4e281dc408d9608f46679cda6;hb=37442d52629699d89ef62d315d35efbc0facec21;hp=a054c063031858f4a30fcf9ff28beec7414c1c05;hpb=10bc17b68c7666cd045658934ccb75dd788c8972;p=p5sagit%2Fp5-mst-13.2.git diff --git a/reentr.c b/reentr.c index a054c06..a085b71 100644 --- a/reentr.c +++ b/reentr.c @@ -1,17 +1,24 @@ -/* +/* -*- buffer-read-only: t -*- + * * reentr.c * - * Copyright (c) 1997-2002, Larry Wall + * Copyright (C) 2002, 2003, 2005 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 reentrl.pl from data in reentr.pl. + * 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" @@ -22,71 +29,91 @@ 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 = 256; /* Make something up. */ + 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 = 256; /* Make something up. */ + 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->_getgrent_size = sysconf(_SC_GETGR_R_SIZE_MAX); + 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->_getgrent_size = SIABUFSIZ; + PL_reentrant_buffer->_grent_size = SIABUFSIZ; # else # ifdef __sgi - PL_reentrant_buffer->_getgrent_size = BUFSIZ; + PL_reentrant_buffer->_grent_size = BUFSIZ; # else - PL_reentrant_buffer->_getgrent_size = 2048; + 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->_gethostent_size = 2048; /* Any better ideas? */ + PL_reentrant_buffer->_hostent_size = REENTRANTUSUALSIZE; #endif #endif /* HAS_GETHOSTBYNAME_R */ #ifdef HAS_GETLOGIN_R - PL_reentrant_buffer->_getlogin_size = 256; /* Make something up. */ + 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->_getnetent_size = 2048; /* Any better ideas? */ + 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->_getprotoent_size = 2048; /* Any better ideas? */ + 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->_getpwent_size = sysconf(_SC_GETPW_R_SIZE_MAX); + 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->_getpwent_size = SIABUFSIZ; + PL_reentrant_buffer->_pwent_size = SIABUFSIZ; # else # ifdef __sgi - PL_reentrant_buffer->_getpwent_size = BUFSIZ; + PL_reentrant_buffer->_pwent_size = BUFSIZ; # else - PL_reentrant_buffer->_getpwent_size = 2048; + 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->_getservent_size = 2048; /* Any better ideas? */ + PL_reentrant_buffer->_servent_size = REENTRANTUSUALSIZE; #endif #endif /* HAS_GETSERVBYNAME_R */ #ifdef HAS_GETSPNAM_R - PL_reentrant_buffer->_getspent_size = 1024; +# 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 */ @@ -105,13 +132,15 @@ Perl_reentrant_size(pTHX) { PL_reentrant_buffer->_readdir64_size = sizeof(struct dirent64) + MAXPATHLEN + 1; #endif /* HAS_READDIR64_R */ #ifdef HAS_SETLOCALE_R - PL_reentrant_buffer->_setlocale_size = 256; /* Make something up. */ + 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 = 256; /* Make something up. */ + PL_reentrant_buffer->_strerror_size = REENTRANTSMALLSIZE; #endif /* HAS_STRERROR_R */ #ifdef HAS_TTYNAME_R - PL_reentrant_buffer->_ttyname_size = 256; /* Make something up. */ + PL_reentrant_buffer->_ttyname_size = REENTRANTSMALLSIZE; #endif /* HAS_TTYNAME_R */ #endif /* USE_REENTRANT_API */ @@ -126,8 +155,8 @@ Perl_reentrant_init(pTHX) { New(31338, PL_reentrant_buffer->_asctime_buffer, PL_reentrant_buffer->_asctime_size, char); #endif /* HAS_ASCTIME_R */ #ifdef HAS_CRYPT_R -#ifdef __GLIBC__ - PL_reentrant_buffer->_crypt_struct.initialized = 0; +#if CRYPT_R_PROTO != REENTRANT_PROTO_B_CCD + PL_reentrant_buffer->_crypt_struct_buffer = 0; #endif #endif /* HAS_CRYPT_R */ #ifdef HAS_CTIME_R @@ -136,14 +165,14 @@ Perl_reentrant_init(pTHX) { #ifdef HAS_DRAND48_R #endif /* HAS_DRAND48_R */ #ifdef HAS_GETGRNAM_R -# ifdef USE_GETGRENT_FPTR - PL_reentrant_buffer->_getgrent_fptr = NULL; +# ifdef USE_GRENT_FPTR + PL_reentrant_buffer->_grent_fptr = NULL; # endif - New(31338, PL_reentrant_buffer->_getgrent_buffer, PL_reentrant_buffer->_getgrent_size, char); + 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->_gethostent_buffer, PL_reentrant_buffer->_gethostent_size, char); + New(31338, PL_reentrant_buffer->_hostent_buffer, PL_reentrant_buffer->_hostent_size, char); #endif #endif /* HAS_GETHOSTBYNAME_R */ #ifdef HAS_GETLOGIN_R @@ -151,27 +180,30 @@ Perl_reentrant_init(pTHX) { #endif /* HAS_GETLOGIN_R */ #ifdef HAS_GETNETBYNAME_R #if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD) - New(31338, PL_reentrant_buffer->_getnetent_buffer, PL_reentrant_buffer->_getnetent_size, char); + 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->_getprotoent_buffer, PL_reentrant_buffer->_getprotoent_size, char); + New(31338, PL_reentrant_buffer->_protoent_buffer, PL_reentrant_buffer->_protoent_size, char); #endif #endif /* HAS_GETPROTOBYNAME_R */ #ifdef HAS_GETPWNAM_R -# ifdef USE_GETPWENT_FPTR - PL_reentrant_buffer->_getpwent_fptr = NULL; +# ifdef USE_PWENT_FPTR + PL_reentrant_buffer->_pwent_fptr = NULL; # endif - New(31338, PL_reentrant_buffer->_getpwent_buffer, PL_reentrant_buffer->_getpwent_size, char); + 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->_getservent_buffer, PL_reentrant_buffer->_getservent_size, char); + New(31338, PL_reentrant_buffer->_servent_buffer, PL_reentrant_buffer->_servent_size, char); #endif #endif /* HAS_GETSERVBYNAME_R */ #ifdef HAS_GETSPNAM_R - New(31338, PL_reentrant_buffer->_getspent_buffer, PL_reentrant_buffer->_getspent_size, char); +# 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 */ @@ -188,6 +220,8 @@ Perl_reentrant_init(pTHX) { #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 */ @@ -205,6 +239,9 @@ Perl_reentrant_free(pTHX) { 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); @@ -212,11 +249,11 @@ Perl_reentrant_free(pTHX) { #ifdef HAS_DRAND48_R #endif /* HAS_DRAND48_R */ #ifdef HAS_GETGRNAM_R - Safefree(PL_reentrant_buffer->_getgrent_buffer); + 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->_gethostent_buffer); + Safefree(PL_reentrant_buffer->_hostent_buffer); #endif #endif /* HAS_GETHOSTBYNAME_R */ #ifdef HAS_GETLOGIN_R @@ -224,24 +261,24 @@ Perl_reentrant_free(pTHX) { #endif /* HAS_GETLOGIN_R */ #ifdef HAS_GETNETBYNAME_R #if !(GETNETBYNAME_R_PROTO == REENTRANT_PROTO_I_CSD) - Safefree(PL_reentrant_buffer->_getnetent_buffer); + 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->_getprotoent_buffer); + Safefree(PL_reentrant_buffer->_protoent_buffer); #endif #endif /* HAS_GETPROTOBYNAME_R */ #ifdef HAS_GETPWNAM_R - Safefree(PL_reentrant_buffer->_getpwent_buffer); + 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->_getservent_buffer); + Safefree(PL_reentrant_buffer->_servent_buffer); #endif #endif /* HAS_GETSERVBYNAME_R */ #ifdef HAS_GETSPNAM_R - Safefree(PL_reentrant_buffer->_getspent_buffer); + Safefree(PL_reentrant_buffer->_spent_buffer); #endif /* HAS_GETSPNAM_R */ #ifdef HAS_GMTIME_R #endif /* HAS_GMTIME_R */ @@ -258,6 +295,8 @@ Perl_reentrant_free(pTHX) { #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 */ @@ -269,3 +308,233 @@ Perl_reentrant_free(pTHX) { #endif /* USE_REENTRANT_API */ } +void* +Perl_reentrant_retry(const char *f, ...) +{ + dVAR; 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; +} + +/* ex: set ro: */