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58e24efff3
This is the patch from the end of the thread that started here: http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2004-09/msg00055.html p4raw-id: //depot/perl@24092
2441 lines
60 KiB
C
2441 lines
60 KiB
C
/* doio.c
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*
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* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
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* 2000, 2001, 2002, 2003, 2004, 2005, 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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*/
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/*
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* "Far below them they saw the white waters pour into a foaming bowl, and
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* then swirl darkly about a deep oval basin in the rocks, until they found
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* their way out again through a narrow gate, and flowed away, fuming and
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* chattering, into calmer and more level reaches."
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*/
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/* This file contains functions that do the actual I/O on behalf of ops.
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* For example, pp_print() calls the do_print() function in this file for
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* each argument needing printing.
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*/
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#include "EXTERN.h"
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#define PERL_IN_DOIO_C
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#include "perl.h"
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#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
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#ifndef HAS_SEM
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#include <sys/ipc.h>
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#endif
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#ifdef HAS_MSG
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#include <sys/msg.h>
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#endif
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#ifdef HAS_SHM
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#include <sys/shm.h>
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# ifndef HAS_SHMAT_PROTOTYPE
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extern Shmat_t shmat (int, char *, int);
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# endif
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#endif
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#endif
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#ifdef I_UTIME
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# if defined(_MSC_VER) || defined(__MINGW32__)
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# include <sys/utime.h>
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# else
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# include <utime.h>
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# endif
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#endif
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#ifdef O_EXCL
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# define OPEN_EXCL O_EXCL
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#else
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# define OPEN_EXCL 0
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#endif
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#define PERL_MODE_MAX 8
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#define PERL_FLAGS_MAX 10
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#include <signal.h>
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bool
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Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
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int rawmode, int rawperm, PerlIO *supplied_fp)
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{
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return do_openn(gv, name, len, as_raw, rawmode, rawperm,
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supplied_fp, (SV **) NULL, 0);
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}
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bool
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Perl_do_open9(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
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int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
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I32 num_svs)
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{
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return do_openn(gv, name, len, as_raw, rawmode, rawperm,
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supplied_fp, &svs, 1);
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}
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bool
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Perl_do_openn(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
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int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
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I32 num_svs)
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{
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register IO *io = GvIOn(gv);
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PerlIO *saveifp = Nullfp;
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PerlIO *saveofp = Nullfp;
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int savefd = -1;
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char savetype = IoTYPE_CLOSED;
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int writing = 0;
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PerlIO *fp;
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int fd;
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int result;
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bool was_fdopen = FALSE;
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bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
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char *type = NULL;
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char mode[PERL_MODE_MAX]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
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SV *namesv;
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Zero(mode,sizeof(mode),char);
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PL_forkprocess = 1; /* assume true if no fork */
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/* Collect default raw/crlf info from the op */
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if (PL_op && PL_op->op_type == OP_OPEN) {
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/* set up IO layers */
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U8 flags = PL_op->op_private;
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in_raw = (flags & OPpOPEN_IN_RAW);
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in_crlf = (flags & OPpOPEN_IN_CRLF);
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out_raw = (flags & OPpOPEN_OUT_RAW);
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out_crlf = (flags & OPpOPEN_OUT_CRLF);
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}
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/* If currently open - close before we re-open */
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if (IoIFP(io)) {
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fd = PerlIO_fileno(IoIFP(io));
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if (IoTYPE(io) == IoTYPE_STD) {
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/* This is a clone of one of STD* handles */
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result = 0;
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}
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else if (fd >= 0 && fd <= PL_maxsysfd) {
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/* This is one of the original STD* handles */
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saveifp = IoIFP(io);
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saveofp = IoOFP(io);
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savetype = IoTYPE(io);
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savefd = fd;
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result = 0;
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}
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else if (IoTYPE(io) == IoTYPE_PIPE)
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result = PerlProc_pclose(IoIFP(io));
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else if (IoIFP(io) != IoOFP(io)) {
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if (IoOFP(io)) {
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result = PerlIO_close(IoOFP(io));
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PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
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}
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else
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result = PerlIO_close(IoIFP(io));
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}
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else
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result = PerlIO_close(IoIFP(io));
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if (result == EOF && fd > PL_maxsysfd) {
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/* Why is this not Perl_warn*() call ? */
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PerlIO_printf(Perl_error_log,
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"Warning: unable to close filehandle %s properly.\n",
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GvENAME(gv));
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}
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IoOFP(io) = IoIFP(io) = Nullfp;
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}
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if (as_raw) {
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/* sysopen style args, i.e. integer mode and permissions */
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STRLEN ix = 0;
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const int appendtrunc =
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0
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#ifdef O_APPEND /* Not fully portable. */
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|O_APPEND
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#endif
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#ifdef O_TRUNC /* Not fully portable. */
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|O_TRUNC
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#endif
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;
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int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
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int ismodifying;
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if (num_svs != 0) {
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Perl_croak(aTHX_ "panic: sysopen with multiple args");
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}
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/* It's not always
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O_RDONLY 0
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O_WRONLY 1
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O_RDWR 2
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It might be (in OS/390 and Mac OS Classic it is)
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O_WRONLY 1
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O_RDONLY 2
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O_RDWR 3
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This means that simple & with O_RDWR would look
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like O_RDONLY is present. Therefore we have to
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be more careful.
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*/
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if ((ismodifying = (rawmode & modifyingmode))) {
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if ((ismodifying & O_WRONLY) == O_WRONLY ||
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(ismodifying & O_RDWR) == O_RDWR ||
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(ismodifying & (O_CREAT|appendtrunc)))
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TAINT_PROPER("sysopen");
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}
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mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */
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#if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE)
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rawmode |= O_LARGEFILE; /* Transparently largefiley. */
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#endif
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IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing);
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namesv = sv_2mortal(newSVpvn(name,strlen(name)));
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num_svs = 1;
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svp = &namesv;
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type = Nullch;
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fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp);
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}
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else {
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/* Regular (non-sys) open */
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char *oname = name;
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STRLEN olen = len;
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char *tend;
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int dodup = 0;
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PerlIO *that_fp = NULL;
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type = savepvn(name, len);
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tend = type+len;
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SAVEFREEPV(type);
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/* Lose leading and trailing white space */
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/*SUPPRESS 530*/
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for (; isSPACE(*type); type++) ;
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while (tend > type && isSPACE(tend[-1]))
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*--tend = '\0';
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if (num_svs) {
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/* New style explicit name, type is just mode and layer info */
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STRLEN l = 0;
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#ifdef USE_STDIO
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if (SvROK(*svp) && !strchr(name,'&')) {
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if (ckWARN(WARN_IO))
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Perl_warner(aTHX_ packWARN(WARN_IO),
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"Can't open a reference");
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SETERRNO(EINVAL, LIB_INVARG);
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goto say_false;
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}
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#endif /* USE_STDIO */
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name = SvOK(*svp) ? SvPV(*svp, l) : "";
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len = (I32)l;
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name = savepvn(name, len);
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SAVEFREEPV(name);
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}
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else {
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name = type;
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len = tend-type;
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}
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IoTYPE(io) = *type;
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if ((*type == IoTYPE_RDWR) && /* scary */
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(*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) &&
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((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) {
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TAINT_PROPER("open");
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mode[1] = *type++;
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writing = 1;
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}
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if (*type == IoTYPE_PIPE) {
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if (num_svs) {
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if (type[1] != IoTYPE_STD) {
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unknown_open_mode:
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Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname);
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}
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type++;
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}
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/*SUPPRESS 530*/
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for (type++; isSPACE(*type); type++) ;
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if (!num_svs) {
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name = type;
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len = tend-type;
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}
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if (*name == '\0') {
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/* command is missing 19990114 */
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if (ckWARN(WARN_PIPE))
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Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
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errno = EPIPE;
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goto say_false;
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}
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if ((*name == '-' && name[1] == '\0') || num_svs)
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TAINT_ENV();
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TAINT_PROPER("piped open");
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if (!num_svs && name[len-1] == '|') {
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name[--len] = '\0' ;
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if (ckWARN(WARN_PIPE))
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Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe");
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}
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mode[0] = 'w';
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writing = 1;
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#ifdef HAS_STRLCAT
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if (out_raw)
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strlcat(mode, "b", PERL_MODE_MAX);
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else if (out_crlf)
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strlcat(mode, "t", PERL_MODE_MAX);
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#else
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if (out_raw)
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strcat(mode, "b");
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else if (out_crlf)
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strcat(mode, "t");
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#endif
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if (num_svs > 1) {
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fp = PerlProc_popen_list(mode, num_svs, svp);
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}
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else {
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fp = PerlProc_popen(name,mode);
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}
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if (num_svs) {
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if (*type) {
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if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
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goto say_false;
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}
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}
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}
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} /* IoTYPE_PIPE */
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else if (*type == IoTYPE_WRONLY) {
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TAINT_PROPER("open");
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type++;
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if (*type == IoTYPE_WRONLY) {
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/* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */
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mode[0] = IoTYPE(io) = IoTYPE_APPEND;
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type++;
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}
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else {
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mode[0] = 'w';
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}
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writing = 1;
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#ifdef HAS_STRLCAT
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if (out_raw)
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strlcat(mode, "b", PERL_MODE_MAX);
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else if (out_crlf)
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strlcat(mode, "t", PERL_MODE_MAX);
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#else
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if (out_raw)
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strcat(mode, "b");
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else if (out_crlf)
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strcat(mode, "t");
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#endif
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if (*type == '&') {
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duplicity:
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dodup = PERLIO_DUP_FD;
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type++;
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if (*type == '=') {
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dodup = 0;
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type++;
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}
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if (!num_svs && !*type && supplied_fp) {
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/* "<+&" etc. is used by typemaps */
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fp = supplied_fp;
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}
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else {
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if (num_svs > 1) {
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Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io));
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}
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/*SUPPRESS 530*/
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for (; isSPACE(*type); type++) ;
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if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) {
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fd = SvUV(*svp);
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num_svs = 0;
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}
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else if (isDIGIT(*type)) {
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fd = atoi(type);
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}
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else {
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const IO* thatio;
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if (num_svs) {
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thatio = sv_2io(*svp);
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}
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else {
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GV *thatgv;
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thatgv = gv_fetchpv(type,FALSE,SVt_PVIO);
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thatio = GvIO(thatgv);
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}
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if (!thatio) {
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#ifdef EINVAL
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SETERRNO(EINVAL,SS_IVCHAN);
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#endif
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goto say_false;
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}
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if ((that_fp = IoIFP(thatio))) {
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/* Flush stdio buffer before dup. --mjd
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* Unfortunately SEEK_CURing 0 seems to
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* be optimized away on most platforms;
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* only Solaris and Linux seem to flush
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* on that. --jhi */
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#ifdef USE_SFIO
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/* sfio fails to clear error on next
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sfwrite, contrary to documentation.
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-- Nick Clark */
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if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1)
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PerlIO_clearerr(that_fp);
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#endif
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/* On the other hand, do all platforms
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* take gracefully to flushing a read-only
|
|
* filehandle? Perhaps we should do
|
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* fsetpos(src)+fgetpos(dst)? --nik */
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PerlIO_flush(that_fp);
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fd = PerlIO_fileno(that_fp);
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|
/* When dup()ing STDIN, STDOUT or STDERR
|
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* explicitly set appropriate access mode */
|
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if (that_fp == PerlIO_stdout()
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|| that_fp == PerlIO_stderr())
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IoTYPE(io) = IoTYPE_WRONLY;
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else if (that_fp == PerlIO_stdin())
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IoTYPE(io) = IoTYPE_RDONLY;
|
|
/* When dup()ing a socket, say result is
|
|
* one as well */
|
|
else if (IoTYPE(thatio) == IoTYPE_SOCKET)
|
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IoTYPE(io) = IoTYPE_SOCKET;
|
|
}
|
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else
|
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fd = -1;
|
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}
|
|
if (!num_svs)
|
|
type = Nullch;
|
|
if (that_fp) {
|
|
fp = PerlIO_fdupopen(aTHX_ that_fp, NULL, dodup);
|
|
}
|
|
else {
|
|
if (dodup)
|
|
fd = PerlLIO_dup(fd);
|
|
else
|
|
was_fdopen = TRUE;
|
|
if (!(fp = PerlIO_openn(aTHX_ type,mode,fd,0,0,NULL,num_svs,svp))) {
|
|
if (dodup)
|
|
PerlLIO_close(fd);
|
|
}
|
|
}
|
|
}
|
|
} /* & */
|
|
else {
|
|
/*SUPPRESS 530*/
|
|
for (; isSPACE(*type); type++) ;
|
|
if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
|
|
/*SUPPRESS 530*/
|
|
type++;
|
|
fp = PerlIO_stdout();
|
|
IoTYPE(io) = IoTYPE_STD;
|
|
if (num_svs > 1) {
|
|
Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD);
|
|
}
|
|
}
|
|
else {
|
|
if (!num_svs) {
|
|
namesv = sv_2mortal(newSVpvn(type,strlen(type)));
|
|
num_svs = 1;
|
|
svp = &namesv;
|
|
type = Nullch;
|
|
}
|
|
fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
|
|
}
|
|
} /* !& */
|
|
if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
|
|
goto unknown_open_mode;
|
|
} /* IoTYPE_WRONLY */
|
|
else if (*type == IoTYPE_RDONLY) {
|
|
/*SUPPRESS 530*/
|
|
for (type++; isSPACE(*type); type++) ;
|
|
mode[0] = 'r';
|
|
#ifdef HAS_STRLCAT
|
|
if (in_raw)
|
|
strlcat(mode, "b", PERL_MODE_MAX);
|
|
else if (in_crlf)
|
|
strlcat(mode, "t", PERL_MODE_MAX);
|
|
#else
|
|
if (in_raw)
|
|
strcat(mode, "b");
|
|
else if (in_crlf)
|
|
strcat(mode, "t");
|
|
#endif
|
|
if (*type == '&') {
|
|
goto duplicity;
|
|
}
|
|
if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) {
|
|
/*SUPPRESS 530*/
|
|
type++;
|
|
fp = PerlIO_stdin();
|
|
IoTYPE(io) = IoTYPE_STD;
|
|
if (num_svs > 1) {
|
|
Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD);
|
|
}
|
|
}
|
|
else {
|
|
if (!num_svs) {
|
|
namesv = sv_2mortal(newSVpvn(type,strlen(type)));
|
|
num_svs = 1;
|
|
svp = &namesv;
|
|
type = Nullch;
|
|
}
|
|
fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
|
|
}
|
|
if (!fp && type && *type && *type != ':' && !isIDFIRST(*type))
|
|
goto unknown_open_mode;
|
|
} /* IoTYPE_RDONLY */
|
|
else if ((num_svs && /* '-|...' or '...|' */
|
|
type[0] == IoTYPE_STD && type[1] == IoTYPE_PIPE) ||
|
|
(!num_svs && tend > type+1 && tend[-1] == IoTYPE_PIPE)) {
|
|
if (num_svs) {
|
|
type += 2; /* skip over '-|' */
|
|
}
|
|
else {
|
|
*--tend = '\0';
|
|
while (tend > type && isSPACE(tend[-1]))
|
|
*--tend = '\0';
|
|
/*SUPPRESS 530*/
|
|
for (; isSPACE(*type); type++) ;
|
|
name = type;
|
|
len = tend-type;
|
|
}
|
|
if (*name == '\0') {
|
|
/* command is missing 19990114 */
|
|
if (ckWARN(WARN_PIPE))
|
|
Perl_warner(aTHX_ packWARN(WARN_PIPE), "Missing command in piped open");
|
|
errno = EPIPE;
|
|
goto say_false;
|
|
}
|
|
if (!(*name == '-' && name[1] == '\0') || num_svs)
|
|
TAINT_ENV();
|
|
TAINT_PROPER("piped open");
|
|
mode[0] = 'r';
|
|
|
|
#ifdef HAS_STRLCAT
|
|
if (in_raw)
|
|
strlcat(mode, "b", PERL_MODE_MAX);
|
|
else if (in_crlf)
|
|
strlcat(mode, "t", PERL_MODE_MAX);
|
|
#else
|
|
if (in_raw)
|
|
strcat(mode, "b");
|
|
else if (in_crlf)
|
|
strcat(mode, "t");
|
|
#endif
|
|
|
|
if (num_svs > 1) {
|
|
fp = PerlProc_popen_list(mode,num_svs,svp);
|
|
}
|
|
else {
|
|
fp = PerlProc_popen(name,mode);
|
|
}
|
|
IoTYPE(io) = IoTYPE_PIPE;
|
|
if (num_svs) {
|
|
for (; isSPACE(*type); type++) ;
|
|
if (*type) {
|
|
if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) {
|
|
goto say_false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
else { /* layer(Args) */
|
|
if (num_svs)
|
|
goto unknown_open_mode;
|
|
name = type;
|
|
IoTYPE(io) = IoTYPE_RDONLY;
|
|
/*SUPPRESS 530*/
|
|
for (; isSPACE(*name); name++) ;
|
|
mode[0] = 'r';
|
|
|
|
#ifdef HAS_STRLCAT
|
|
if (in_raw)
|
|
strlcat(mode, "b", PERL_MODE_MAX);
|
|
else if (in_crlf)
|
|
strlcat(mode, "t", PERL_MODE_MAX);
|
|
#else
|
|
if (in_raw)
|
|
strcat(mode, "b");
|
|
else if (in_crlf)
|
|
strcat(mode, "t");
|
|
#endif
|
|
|
|
if (*name == '-' && name[1] == '\0') {
|
|
fp = PerlIO_stdin();
|
|
IoTYPE(io) = IoTYPE_STD;
|
|
}
|
|
else {
|
|
if (!num_svs) {
|
|
namesv = sv_2mortal(newSVpvn(type,strlen(type)));
|
|
num_svs = 1;
|
|
svp = &namesv;
|
|
type = Nullch;
|
|
}
|
|
fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp);
|
|
}
|
|
}
|
|
}
|
|
if (!fp) {
|
|
if (ckWARN(WARN_NEWLINE) && IoTYPE(io) == IoTYPE_RDONLY && strchr(name, '\n'))
|
|
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
|
|
goto say_false;
|
|
}
|
|
|
|
if (ckWARN(WARN_IO)) {
|
|
if ((IoTYPE(io) == IoTYPE_RDONLY) &&
|
|
(fp == PerlIO_stdout() || fp == PerlIO_stderr())) {
|
|
Perl_warner(aTHX_ packWARN(WARN_IO),
|
|
"Filehandle STD%s reopened as %s only for input",
|
|
((fp == PerlIO_stdout()) ? "OUT" : "ERR"),
|
|
GvENAME(gv));
|
|
}
|
|
else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) {
|
|
Perl_warner(aTHX_ packWARN(WARN_IO),
|
|
"Filehandle STDIN reopened as %s only for output",
|
|
GvENAME(gv));
|
|
}
|
|
}
|
|
|
|
fd = PerlIO_fileno(fp);
|
|
/* If there is no fd (e.g. PerlIO::scalar) assume it isn't a
|
|
* socket - this covers PerlIO::scalar - otherwise unless we "know" the
|
|
* type probe for socket-ness.
|
|
*/
|
|
if (IoTYPE(io) && IoTYPE(io) != IoTYPE_PIPE && IoTYPE(io) != IoTYPE_STD && fd >= 0) {
|
|
if (PerlLIO_fstat(fd,&PL_statbuf) < 0) {
|
|
/* If PerlIO claims to have fd we had better be able to fstat() it. */
|
|
(void) PerlIO_close(fp);
|
|
goto say_false;
|
|
}
|
|
#ifndef PERL_MICRO
|
|
if (S_ISSOCK(PL_statbuf.st_mode))
|
|
IoTYPE(io) = IoTYPE_SOCKET; /* in case a socket was passed in to us */
|
|
#ifdef HAS_SOCKET
|
|
else if (
|
|
#ifdef S_IFMT
|
|
!(PL_statbuf.st_mode & S_IFMT)
|
|
#else
|
|
!PL_statbuf.st_mode
|
|
#endif
|
|
&& IoTYPE(io) != IoTYPE_WRONLY /* Dups of STD* filehandles already have */
|
|
&& IoTYPE(io) != IoTYPE_RDONLY /* type so they aren't marked as sockets */
|
|
) { /* on OS's that return 0 on fstat()ed pipe */
|
|
char tmpbuf[256];
|
|
Sock_size_t buflen = sizeof tmpbuf;
|
|
if (PerlSock_getsockname(fd, (struct sockaddr *)tmpbuf, &buflen) >= 0
|
|
|| errno != ENOTSOCK)
|
|
IoTYPE(io) = IoTYPE_SOCKET; /* some OS's return 0 on fstat()ed socket */
|
|
/* but some return 0 for streams too, sigh */
|
|
}
|
|
#endif /* HAS_SOCKET */
|
|
#endif /* !PERL_MICRO */
|
|
}
|
|
|
|
/* Eeek - FIXME !!!
|
|
* If this is a standard handle we discard all the layer stuff
|
|
* and just dup the fd into whatever was on the handle before !
|
|
*/
|
|
|
|
if (saveifp) { /* must use old fp? */
|
|
/* If fd is less that PL_maxsysfd i.e. STDIN..STDERR
|
|
then dup the new fileno down
|
|
*/
|
|
if (saveofp) {
|
|
PerlIO_flush(saveofp); /* emulate PerlIO_close() */
|
|
if (saveofp != saveifp) { /* was a socket? */
|
|
PerlIO_close(saveofp);
|
|
}
|
|
}
|
|
if (savefd != fd) {
|
|
/* Still a small can-of-worms here if (say) PerlIO::scalar
|
|
is assigned to (say) STDOUT - for now let dup2() fail
|
|
and provide the error
|
|
*/
|
|
if (PerlLIO_dup2(fd, savefd) < 0) {
|
|
(void)PerlIO_close(fp);
|
|
goto say_false;
|
|
}
|
|
#ifdef VMS
|
|
if (savefd != PerlIO_fileno(PerlIO_stdin())) {
|
|
char newname[FILENAME_MAX+1];
|
|
if (PerlIO_getname(fp, newname)) {
|
|
if (fd == PerlIO_fileno(PerlIO_stdout()))
|
|
Perl_vmssetuserlnm(aTHX_ "SYS$OUTPUT", newname);
|
|
if (fd == PerlIO_fileno(PerlIO_stderr()))
|
|
Perl_vmssetuserlnm(aTHX_ "SYS$ERROR", newname);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if !defined(WIN32)
|
|
/* PL_fdpid isn't used on Windows, so avoid this useless work.
|
|
* XXX Probably the same for a lot of other places. */
|
|
{
|
|
Pid_t pid;
|
|
SV *sv;
|
|
|
|
LOCK_FDPID_MUTEX;
|
|
sv = *av_fetch(PL_fdpid,fd,TRUE);
|
|
(void)SvUPGRADE(sv, SVt_IV);
|
|
pid = SvIVX(sv);
|
|
SvIVX(sv) = 0;
|
|
sv = *av_fetch(PL_fdpid,savefd,TRUE);
|
|
(void)SvUPGRADE(sv, SVt_IV);
|
|
SvIVX(sv) = pid;
|
|
UNLOCK_FDPID_MUTEX;
|
|
}
|
|
#endif
|
|
|
|
if (was_fdopen) {
|
|
/* need to close fp without closing underlying fd */
|
|
int ofd = PerlIO_fileno(fp);
|
|
int dupfd = PerlLIO_dup(ofd);
|
|
#if defined(HAS_FCNTL) && defined(F_SETFD)
|
|
/* Assume if we have F_SETFD we have F_GETFD */
|
|
int coe = fcntl(ofd,F_GETFD);
|
|
#endif
|
|
PerlIO_close(fp);
|
|
PerlLIO_dup2(dupfd,ofd);
|
|
#if defined(HAS_FCNTL) && defined(F_SETFD)
|
|
/* The dup trick has lost close-on-exec on ofd */
|
|
fcntl(ofd,F_SETFD, coe);
|
|
#endif
|
|
PerlLIO_close(dupfd);
|
|
}
|
|
else
|
|
PerlIO_close(fp);
|
|
}
|
|
fp = saveifp;
|
|
PerlIO_clearerr(fp);
|
|
fd = PerlIO_fileno(fp);
|
|
}
|
|
#if defined(HAS_FCNTL) && defined(F_SETFD)
|
|
if (fd >= 0) {
|
|
int save_errno = errno;
|
|
fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */
|
|
errno = save_errno;
|
|
}
|
|
#endif
|
|
IoIFP(io) = fp;
|
|
|
|
IoFLAGS(io) &= ~IOf_NOLINE;
|
|
if (writing) {
|
|
if (IoTYPE(io) == IoTYPE_SOCKET
|
|
|| (IoTYPE(io) == IoTYPE_WRONLY && fd >= 0 && S_ISCHR(PL_statbuf.st_mode)) ) {
|
|
char *s = mode;
|
|
if (*s == IoTYPE_IMPLICIT || *s == IoTYPE_NUMERIC)
|
|
s++;
|
|
*s = 'w';
|
|
if (!(IoOFP(io) = PerlIO_openn(aTHX_ type,s,fd,0,0,NULL,0,svp))) {
|
|
PerlIO_close(fp);
|
|
IoIFP(io) = Nullfp;
|
|
goto say_false;
|
|
}
|
|
}
|
|
else
|
|
IoOFP(io) = fp;
|
|
}
|
|
return TRUE;
|
|
|
|
say_false:
|
|
IoIFP(io) = saveifp;
|
|
IoOFP(io) = saveofp;
|
|
IoTYPE(io) = savetype;
|
|
return FALSE;
|
|
}
|
|
|
|
PerlIO *
|
|
Perl_nextargv(pTHX_ register GV *gv)
|
|
{
|
|
register SV *sv;
|
|
#ifndef FLEXFILENAMES
|
|
int filedev;
|
|
int fileino;
|
|
#endif
|
|
Uid_t fileuid;
|
|
Gid_t filegid;
|
|
IO *io = GvIOp(gv);
|
|
|
|
if (!PL_argvoutgv)
|
|
PL_argvoutgv = gv_fetchpv("ARGVOUT",TRUE,SVt_PVIO);
|
|
if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) {
|
|
IoFLAGS(io) &= ~IOf_START;
|
|
if (PL_inplace) {
|
|
if (!PL_argvout_stack)
|
|
PL_argvout_stack = newAV();
|
|
av_push(PL_argvout_stack, SvREFCNT_inc(PL_defoutgv));
|
|
}
|
|
}
|
|
if (PL_filemode & (S_ISUID|S_ISGID)) {
|
|
PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
|
|
#ifdef HAS_FCHMOD
|
|
if (PL_lastfd != -1)
|
|
(void)fchmod(PL_lastfd,PL_filemode);
|
|
#else
|
|
(void)PerlLIO_chmod(PL_oldname,PL_filemode);
|
|
#endif
|
|
}
|
|
PL_lastfd = -1;
|
|
PL_filemode = 0;
|
|
if (!GvAV(gv))
|
|
return Nullfp;
|
|
while (av_len(GvAV(gv)) >= 0) {
|
|
STRLEN oldlen;
|
|
sv = av_shift(GvAV(gv));
|
|
SAVEFREESV(sv);
|
|
sv_setsv(GvSV(gv),sv);
|
|
SvSETMAGIC(GvSV(gv));
|
|
PL_oldname = SvPVx(GvSV(gv), oldlen);
|
|
if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,Nullfp)) {
|
|
if (PL_inplace) {
|
|
TAINT_PROPER("inplace open");
|
|
if (oldlen == 1 && *PL_oldname == '-') {
|
|
setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
|
|
return IoIFP(GvIOp(gv));
|
|
}
|
|
#ifndef FLEXFILENAMES
|
|
filedev = PL_statbuf.st_dev;
|
|
fileino = PL_statbuf.st_ino;
|
|
#endif
|
|
PL_filemode = PL_statbuf.st_mode;
|
|
fileuid = PL_statbuf.st_uid;
|
|
filegid = PL_statbuf.st_gid;
|
|
if (!S_ISREG(PL_filemode)) {
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't do inplace edit: %s is not a regular file",
|
|
PL_oldname );
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
if (*PL_inplace) {
|
|
char *star = strchr(PL_inplace, '*');
|
|
if (star) {
|
|
char *begin = PL_inplace;
|
|
sv_setpvn(sv, "", 0);
|
|
do {
|
|
sv_catpvn(sv, begin, star - begin);
|
|
sv_catpvn(sv, PL_oldname, oldlen);
|
|
begin = ++star;
|
|
} while ((star = strchr(begin, '*')));
|
|
if (*begin)
|
|
sv_catpv(sv,begin);
|
|
}
|
|
else {
|
|
sv_catpv(sv,PL_inplace);
|
|
}
|
|
#ifndef FLEXFILENAMES
|
|
if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
|
|
&& PL_statbuf.st_dev == filedev
|
|
&& PL_statbuf.st_ino == fileino)
|
|
#ifdef DJGPP
|
|
|| ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0)
|
|
#endif
|
|
)
|
|
{
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't do inplace edit: %"SVf" would not be unique",
|
|
sv);
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
#endif
|
|
#ifdef HAS_RENAME
|
|
#if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
|
|
if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't rename %s to %"SVf": %s, skipping file",
|
|
PL_oldname, sv, Strerror(errno) );
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
#else
|
|
do_close(gv,FALSE);
|
|
(void)PerlLIO_unlink(SvPVX(sv));
|
|
(void)PerlLIO_rename(PL_oldname,SvPVX(sv));
|
|
do_open(gv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,O_RDONLY,0,Nullfp);
|
|
#endif /* DOSISH */
|
|
#else
|
|
(void)UNLINK(SvPVX(sv));
|
|
if (link(PL_oldname,SvPVX(sv)) < 0) {
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't rename %s to %"SVf": %s, skipping file",
|
|
PL_oldname, sv, Strerror(errno) );
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
(void)UNLINK(PL_oldname);
|
|
#endif
|
|
}
|
|
else {
|
|
#if !defined(DOSISH) && !defined(AMIGAOS)
|
|
# ifndef VMS /* Don't delete; use automatic file versioning */
|
|
if (UNLINK(PL_oldname) < 0) {
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't remove %s: %s, skipping file",
|
|
PL_oldname, Strerror(errno) );
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
# endif
|
|
#else
|
|
Perl_croak(aTHX_ "Can't do inplace edit without backup");
|
|
#endif
|
|
}
|
|
|
|
sv_setpvn(sv,">",!PL_inplace);
|
|
sv_catpvn(sv,PL_oldname,oldlen);
|
|
SETERRNO(0,0); /* in case sprintf set errno */
|
|
#ifdef VMS
|
|
if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
|
|
O_WRONLY|O_CREAT|O_TRUNC,0,Nullfp))
|
|
#else
|
|
if (!do_open(PL_argvoutgv,SvPVX(sv),SvCUR(sv),PL_inplace!=0,
|
|
O_WRONLY|O_CREAT|OPEN_EXCL,0666,Nullfp))
|
|
#endif
|
|
{
|
|
if (ckWARN_d(WARN_INPLACE))
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't do inplace edit on %s: %s",
|
|
PL_oldname, Strerror(errno) );
|
|
do_close(gv,FALSE);
|
|
continue;
|
|
}
|
|
setdefout(PL_argvoutgv);
|
|
PL_lastfd = PerlIO_fileno(IoIFP(GvIOp(PL_argvoutgv)));
|
|
(void)PerlLIO_fstat(PL_lastfd,&PL_statbuf);
|
|
#ifdef HAS_FCHMOD
|
|
(void)fchmod(PL_lastfd,PL_filemode);
|
|
#else
|
|
# if !(defined(WIN32) && defined(__BORLANDC__))
|
|
/* Borland runtime creates a readonly file! */
|
|
(void)PerlLIO_chmod(PL_oldname,PL_filemode);
|
|
# endif
|
|
#endif
|
|
if (fileuid != PL_statbuf.st_uid || filegid != PL_statbuf.st_gid) {
|
|
#ifdef HAS_FCHOWN
|
|
(void)fchown(PL_lastfd,fileuid,filegid);
|
|
#else
|
|
#ifdef HAS_CHOWN
|
|
(void)PerlLIO_chown(PL_oldname,fileuid,filegid);
|
|
#endif
|
|
#endif
|
|
}
|
|
}
|
|
return IoIFP(GvIOp(gv));
|
|
}
|
|
else {
|
|
if (ckWARN_d(WARN_INPLACE)) {
|
|
int eno = errno;
|
|
if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
|
|
&& !S_ISREG(PL_statbuf.st_mode))
|
|
{
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
|
|
"Can't do inplace edit: %s is not a regular file",
|
|
PL_oldname);
|
|
}
|
|
else
|
|
Perl_warner(aTHX_ packWARN(WARN_INPLACE), "Can't open %s: %s",
|
|
PL_oldname, Strerror(eno));
|
|
}
|
|
}
|
|
}
|
|
if (io && (IoFLAGS(io) & IOf_ARGV))
|
|
IoFLAGS(io) |= IOf_START;
|
|
if (PL_inplace) {
|
|
(void)do_close(PL_argvoutgv,FALSE);
|
|
if (io && (IoFLAGS(io) & IOf_ARGV)
|
|
&& PL_argvout_stack && AvFILLp(PL_argvout_stack) >= 0)
|
|
{
|
|
GV *oldout = (GV*)av_pop(PL_argvout_stack);
|
|
setdefout(oldout);
|
|
SvREFCNT_dec(oldout);
|
|
return Nullfp;
|
|
}
|
|
setdefout(gv_fetchpv("STDOUT",TRUE,SVt_PVIO));
|
|
}
|
|
return Nullfp;
|
|
}
|
|
|
|
#ifdef HAS_PIPE
|
|
void
|
|
Perl_do_pipe(pTHX_ SV *sv, GV *rgv, GV *wgv)
|
|
{
|
|
register IO *rstio;
|
|
register IO *wstio;
|
|
int fd[2];
|
|
|
|
if (!rgv)
|
|
goto badexit;
|
|
if (!wgv)
|
|
goto badexit;
|
|
|
|
rstio = GvIOn(rgv);
|
|
wstio = GvIOn(wgv);
|
|
|
|
if (IoIFP(rstio))
|
|
do_close(rgv,FALSE);
|
|
if (IoIFP(wstio))
|
|
do_close(wgv,FALSE);
|
|
|
|
if (PerlProc_pipe(fd) < 0)
|
|
goto badexit;
|
|
IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
|
|
IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
|
|
IoOFP(rstio) = IoIFP(rstio);
|
|
IoIFP(wstio) = IoOFP(wstio);
|
|
IoTYPE(rstio) = IoTYPE_RDONLY;
|
|
IoTYPE(wstio) = IoTYPE_WRONLY;
|
|
if (!IoIFP(rstio) || !IoOFP(wstio)) {
|
|
if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
|
|
else PerlLIO_close(fd[0]);
|
|
if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
|
|
else PerlLIO_close(fd[1]);
|
|
goto badexit;
|
|
}
|
|
|
|
sv_setsv(sv,&PL_sv_yes);
|
|
return;
|
|
|
|
badexit:
|
|
sv_setsv(sv,&PL_sv_undef);
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
/* explicit renamed to avoid C++ conflict -- kja */
|
|
bool
|
|
Perl_do_close(pTHX_ GV *gv, bool not_implicit)
|
|
{
|
|
bool retval;
|
|
IO *io;
|
|
|
|
if (!gv)
|
|
gv = PL_argvgv;
|
|
if (!gv || SvTYPE(gv) != SVt_PVGV) {
|
|
if (not_implicit)
|
|
SETERRNO(EBADF,SS_IVCHAN);
|
|
return FALSE;
|
|
}
|
|
io = GvIO(gv);
|
|
if (!io) { /* never opened */
|
|
if (not_implicit) {
|
|
if (ckWARN(WARN_UNOPENED)) /* no check for closed here */
|
|
report_evil_fh(gv, io, PL_op->op_type);
|
|
SETERRNO(EBADF,SS_IVCHAN);
|
|
}
|
|
return FALSE;
|
|
}
|
|
retval = io_close(io, not_implicit);
|
|
if (not_implicit) {
|
|
IoLINES(io) = 0;
|
|
IoPAGE(io) = 0;
|
|
IoLINES_LEFT(io) = IoPAGE_LEN(io);
|
|
}
|
|
IoTYPE(io) = IoTYPE_CLOSED;
|
|
return retval;
|
|
}
|
|
|
|
bool
|
|
Perl_io_close(pTHX_ IO *io, bool not_implicit)
|
|
{
|
|
bool retval = FALSE;
|
|
int status;
|
|
|
|
if (IoIFP(io)) {
|
|
if (IoTYPE(io) == IoTYPE_PIPE) {
|
|
status = PerlProc_pclose(IoIFP(io));
|
|
if (not_implicit) {
|
|
STATUS_NATIVE_SET(status);
|
|
retval = (STATUS_POSIX == 0);
|
|
}
|
|
else {
|
|
retval = (status != -1);
|
|
}
|
|
}
|
|
else if (IoTYPE(io) == IoTYPE_STD)
|
|
retval = TRUE;
|
|
else {
|
|
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
|
|
bool prev_err = PerlIO_error(IoOFP(io));
|
|
retval = (PerlIO_close(IoOFP(io)) != EOF && !prev_err);
|
|
PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */
|
|
}
|
|
else {
|
|
bool prev_err = PerlIO_error(IoIFP(io));
|
|
retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
|
|
}
|
|
}
|
|
IoOFP(io) = IoIFP(io) = Nullfp;
|
|
}
|
|
else if (not_implicit) {
|
|
SETERRNO(EBADF,SS_IVCHAN);
|
|
}
|
|
|
|
return retval;
|
|
}
|
|
|
|
bool
|
|
Perl_do_eof(pTHX_ GV *gv)
|
|
{
|
|
register IO *io;
|
|
int ch;
|
|
|
|
io = GvIO(gv);
|
|
|
|
if (!io)
|
|
return TRUE;
|
|
else if (ckWARN(WARN_IO) && (IoTYPE(io) == IoTYPE_WRONLY))
|
|
report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
|
|
|
|
while (IoIFP(io)) {
|
|
int saverrno;
|
|
|
|
if (PerlIO_has_cntptr(IoIFP(io))) { /* (the code works without this) */
|
|
if (PerlIO_get_cnt(IoIFP(io)) > 0) /* cheat a little, since */
|
|
return FALSE; /* this is the most usual case */
|
|
}
|
|
|
|
saverrno = errno; /* getc and ungetc can stomp on errno */
|
|
ch = PerlIO_getc(IoIFP(io));
|
|
if (ch != EOF) {
|
|
(void)PerlIO_ungetc(IoIFP(io),ch);
|
|
errno = saverrno;
|
|
return FALSE;
|
|
}
|
|
errno = saverrno;
|
|
|
|
if (PerlIO_has_cntptr(IoIFP(io)) && PerlIO_canset_cnt(IoIFP(io))) {
|
|
if (PerlIO_get_cnt(IoIFP(io)) < -1)
|
|
PerlIO_set_cnt(IoIFP(io),-1);
|
|
}
|
|
if (PL_op->op_flags & OPf_SPECIAL) { /* not necessarily a real EOF yet? */
|
|
if (gv != PL_argvgv || !nextargv(gv)) /* get another fp handy */
|
|
return TRUE;
|
|
}
|
|
else
|
|
return TRUE; /* normal fp, definitely end of file */
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
Off_t
|
|
Perl_do_tell(pTHX_ GV *gv)
|
|
{
|
|
register IO *io = 0;
|
|
register PerlIO *fp;
|
|
|
|
if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
|
|
#ifdef ULTRIX_STDIO_BOTCH
|
|
if (PerlIO_eof(fp))
|
|
(void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
|
|
#endif
|
|
return PerlIO_tell(fp);
|
|
}
|
|
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
|
|
report_evil_fh(gv, io, PL_op->op_type);
|
|
SETERRNO(EBADF,RMS_IFI);
|
|
return (Off_t)-1;
|
|
}
|
|
|
|
bool
|
|
Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence)
|
|
{
|
|
register IO *io = 0;
|
|
register PerlIO *fp;
|
|
|
|
if (gv && (io = GvIO(gv)) && (fp = IoIFP(io))) {
|
|
#ifdef ULTRIX_STDIO_BOTCH
|
|
if (PerlIO_eof(fp))
|
|
(void)PerlIO_seek(fp, 0L, 2); /* ultrix 1.2 workaround */
|
|
#endif
|
|
return PerlIO_seek(fp, pos, whence) >= 0;
|
|
}
|
|
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
|
|
report_evil_fh(gv, io, PL_op->op_type);
|
|
SETERRNO(EBADF,RMS_IFI);
|
|
return FALSE;
|
|
}
|
|
|
|
Off_t
|
|
Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence)
|
|
{
|
|
register IO *io = 0;
|
|
register PerlIO *fp;
|
|
|
|
if (gv && (io = GvIO(gv)) && (fp = IoIFP(io)))
|
|
return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence);
|
|
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
|
|
report_evil_fh(gv, io, PL_op->op_type);
|
|
SETERRNO(EBADF,RMS_IFI);
|
|
return (Off_t)-1;
|
|
}
|
|
|
|
int
|
|
Perl_mode_from_discipline(pTHX_ SV *discp)
|
|
{
|
|
int mode = O_BINARY;
|
|
if (discp) {
|
|
STRLEN len;
|
|
char *s = SvPV(discp,len);
|
|
while (*s) {
|
|
if (*s == ':') {
|
|
switch (s[1]) {
|
|
case 'r':
|
|
if (s[2] == 'a' && s[3] == 'w'
|
|
&& (!s[4] || s[4] == ':' || isSPACE(s[4])))
|
|
{
|
|
mode = O_BINARY;
|
|
s += 4;
|
|
len -= 4;
|
|
break;
|
|
}
|
|
/* FALL THROUGH */
|
|
case 'c':
|
|
if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
|
|
&& (!s[5] || s[5] == ':' || isSPACE(s[5])))
|
|
{
|
|
mode = O_TEXT;
|
|
s += 5;
|
|
len -= 5;
|
|
break;
|
|
}
|
|
/* FALL THROUGH */
|
|
default:
|
|
goto fail_discipline;
|
|
}
|
|
}
|
|
else if (isSPACE(*s)) {
|
|
++s;
|
|
--len;
|
|
}
|
|
else {
|
|
char *end;
|
|
fail_discipline:
|
|
end = strchr(s+1, ':');
|
|
if (!end)
|
|
end = s+len;
|
|
#ifndef PERLIO_LAYERS
|
|
Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
|
|
#else
|
|
len -= end-s;
|
|
s = end;
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
return mode;
|
|
}
|
|
|
|
int
|
|
Perl_do_binmode(pTHX_ PerlIO *fp, int iotype, int mode)
|
|
{
|
|
/* The old body of this is now in non-LAYER part of perlio.c
|
|
* This is a stub for any XS code which might have been calling it.
|
|
*/
|
|
const char *name = ":raw";
|
|
#ifdef PERLIO_USING_CRLF
|
|
if (!(mode & O_BINARY))
|
|
name = ":crlf";
|
|
#endif
|
|
return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
|
|
}
|
|
|
|
#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE)
|
|
I32 my_chsize(fd, length)
|
|
I32 fd; /* file descriptor */
|
|
Off_t length; /* length to set file to */
|
|
{
|
|
#ifdef F_FREESP
|
|
/* code courtesy of William Kucharski */
|
|
#define HAS_CHSIZE
|
|
|
|
struct flock fl;
|
|
Stat_t filebuf;
|
|
|
|
if (PerlLIO_fstat(fd, &filebuf) < 0)
|
|
return -1;
|
|
|
|
if (filebuf.st_size < length) {
|
|
|
|
/* extend file length */
|
|
|
|
if ((PerlLIO_lseek(fd, (length - 1), 0)) < 0)
|
|
return -1;
|
|
|
|
/* write a "0" byte */
|
|
|
|
if ((PerlLIO_write(fd, "", 1)) != 1)
|
|
return -1;
|
|
}
|
|
else {
|
|
/* truncate length */
|
|
|
|
fl.l_whence = 0;
|
|
fl.l_len = 0;
|
|
fl.l_start = length;
|
|
fl.l_type = F_WRLCK; /* write lock on file space */
|
|
|
|
/*
|
|
* This relies on the UNDOCUMENTED F_FREESP argument to
|
|
* fcntl(2), which truncates the file so that it ends at the
|
|
* position indicated by fl.l_start.
|
|
*
|
|
* Will minor miracles never cease?
|
|
*/
|
|
|
|
if (fcntl(fd, F_FREESP, &fl) < 0)
|
|
return -1;
|
|
|
|
}
|
|
|
|
return 0;
|
|
#else
|
|
dTHX;
|
|
DIE(aTHX_ "truncate not implemented");
|
|
#endif /* F_FREESP */
|
|
}
|
|
#endif /* !HAS_TRUNCATE && !HAS_CHSIZE */
|
|
|
|
bool
|
|
Perl_do_print(pTHX_ register SV *sv, PerlIO *fp)
|
|
{
|
|
register const char *tmps;
|
|
STRLEN len;
|
|
|
|
/* assuming fp is checked earlier */
|
|
if (!sv)
|
|
return TRUE;
|
|
if (PL_ofmt) {
|
|
if (SvGMAGICAL(sv))
|
|
mg_get(sv);
|
|
if (SvIOK(sv) && SvIVX(sv) != 0) {
|
|
PerlIO_printf(fp, PL_ofmt, (NV)SvIVX(sv));
|
|
return !PerlIO_error(fp);
|
|
}
|
|
if ( (SvNOK(sv) && SvNVX(sv) != 0.0)
|
|
|| (looks_like_number(sv) && sv_2nv(sv) != 0.0) ) {
|
|
PerlIO_printf(fp, PL_ofmt, SvNVX(sv));
|
|
return !PerlIO_error(fp);
|
|
}
|
|
}
|
|
switch (SvTYPE(sv)) {
|
|
case SVt_NULL:
|
|
if (ckWARN(WARN_UNINITIALIZED))
|
|
report_uninit(sv);
|
|
return TRUE;
|
|
case SVt_IV:
|
|
if (SvIOK(sv)) {
|
|
if (SvGMAGICAL(sv))
|
|
mg_get(sv);
|
|
if (SvIsUV(sv))
|
|
PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv));
|
|
else
|
|
PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv));
|
|
return !PerlIO_error(fp);
|
|
}
|
|
/* FALL THROUGH */
|
|
default:
|
|
if (PerlIO_isutf8(fp)) {
|
|
if (!SvUTF8(sv))
|
|
sv_utf8_upgrade_flags(sv = sv_mortalcopy(sv),
|
|
SV_GMAGIC|SV_UTF8_NO_ENCODING);
|
|
}
|
|
else if (DO_UTF8(sv)) {
|
|
if (!sv_utf8_downgrade((sv = sv_mortalcopy(sv)), TRUE)
|
|
&& ckWARN_d(WARN_UTF8))
|
|
{
|
|
Perl_warner(aTHX_ packWARN(WARN_UTF8), "Wide character in print");
|
|
}
|
|
}
|
|
tmps = SvPV(sv, len);
|
|
break;
|
|
}
|
|
/* To detect whether the process is about to overstep its
|
|
* filesize limit we would need getrlimit(). We could then
|
|
* also transparently raise the limit with setrlimit() --
|
|
* but only until the system hard limit/the filesystem limit,
|
|
* at which we would get EPERM. Note that when using buffered
|
|
* io the write failure can be delayed until the flush/close. --jhi */
|
|
if (len && (PerlIO_write(fp,tmps,len) == 0))
|
|
return FALSE;
|
|
return !PerlIO_error(fp);
|
|
}
|
|
|
|
I32
|
|
Perl_my_stat(pTHX)
|
|
{
|
|
dSP;
|
|
IO *io;
|
|
GV* gv;
|
|
|
|
if (PL_op->op_flags & OPf_REF) {
|
|
EXTEND(SP,1);
|
|
gv = cGVOP_gv;
|
|
do_fstat:
|
|
io = GvIO(gv);
|
|
if (io && IoIFP(io)) {
|
|
PL_statgv = gv;
|
|
sv_setpv(PL_statname,"");
|
|
PL_laststype = OP_STAT;
|
|
return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
|
|
}
|
|
else {
|
|
if (gv == PL_defgv)
|
|
return PL_laststatval;
|
|
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
|
|
report_evil_fh(gv, io, PL_op->op_type);
|
|
PL_statgv = Nullgv;
|
|
sv_setpv(PL_statname,"");
|
|
return (PL_laststatval = -1);
|
|
}
|
|
}
|
|
else if (PL_op->op_private & OPpFT_STACKED) {
|
|
return PL_laststatval;
|
|
}
|
|
else {
|
|
SV* sv = POPs;
|
|
char *s;
|
|
STRLEN len;
|
|
PUTBACK;
|
|
if (SvTYPE(sv) == SVt_PVGV) {
|
|
gv = (GV*)sv;
|
|
goto do_fstat;
|
|
}
|
|
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
|
|
gv = (GV*)SvRV(sv);
|
|
goto do_fstat;
|
|
}
|
|
|
|
s = SvPV(sv, len);
|
|
PL_statgv = Nullgv;
|
|
sv_setpvn(PL_statname, s, len);
|
|
s = SvPVX(PL_statname); /* s now NUL-terminated */
|
|
PL_laststype = OP_STAT;
|
|
PL_laststatval = PerlLIO_stat(s, &PL_statcache);
|
|
if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(s, '\n'))
|
|
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
|
|
return PL_laststatval;
|
|
}
|
|
}
|
|
|
|
static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
|
|
|
|
I32
|
|
Perl_my_lstat(pTHX)
|
|
{
|
|
dSP;
|
|
SV *sv;
|
|
STRLEN n_a;
|
|
if (PL_op->op_flags & OPf_REF) {
|
|
EXTEND(SP,1);
|
|
if (cGVOP_gv == PL_defgv) {
|
|
if (PL_laststype != OP_LSTAT)
|
|
Perl_croak(aTHX_ no_prev_lstat);
|
|
return PL_laststatval;
|
|
}
|
|
if (ckWARN(WARN_IO)) {
|
|
Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
|
|
GvENAME(cGVOP_gv));
|
|
return (PL_laststatval = -1);
|
|
}
|
|
}
|
|
else if (ckWARN(WARN_IO) && PL_laststype != OP_LSTAT
|
|
&& (PL_op->op_private & OPpFT_STACKED))
|
|
Perl_croak(aTHX_ no_prev_lstat);
|
|
|
|
PL_laststype = OP_LSTAT;
|
|
PL_statgv = Nullgv;
|
|
sv = POPs;
|
|
PUTBACK;
|
|
if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV && ckWARN(WARN_IO)) {
|
|
Perl_warner(aTHX_ packWARN(WARN_IO), "Use of -l on filehandle %s",
|
|
GvENAME((GV*) SvRV(sv)));
|
|
return (PL_laststatval = -1);
|
|
}
|
|
sv_setpv(PL_statname,SvPV(sv, n_a));
|
|
PL_laststatval = PerlLIO_lstat(SvPV(sv, n_a),&PL_statcache);
|
|
if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(SvPV(sv, n_a), '\n'))
|
|
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat");
|
|
return PL_laststatval;
|
|
}
|
|
|
|
#ifndef OS2
|
|
bool
|
|
Perl_do_aexec(pTHX_ SV *really, register SV **mark, register SV **sp)
|
|
{
|
|
return do_aexec5(really, mark, sp, 0, 0);
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
|
|
int fd, int do_report)
|
|
{
|
|
#ifdef MACOS_TRADITIONAL
|
|
Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
|
|
#else
|
|
register char **a;
|
|
const char *tmps = Nullch;
|
|
STRLEN n_a;
|
|
|
|
if (sp > mark) {
|
|
New(401,PL_Argv, sp - mark + 1, char*);
|
|
a = PL_Argv;
|
|
while (++mark <= sp) {
|
|
if (*mark)
|
|
*a++ = SvPVx(*mark, n_a);
|
|
else
|
|
*a++ = "";
|
|
}
|
|
*a = Nullch;
|
|
if (really)
|
|
tmps = SvPV(really, n_a);
|
|
if ((!really && *PL_Argv[0] != '/') ||
|
|
(really && *tmps != '/')) /* will execvp use PATH? */
|
|
TAINT_ENV(); /* testing IFS here is overkill, probably */
|
|
PERL_FPU_PRE_EXEC
|
|
if (really && *tmps)
|
|
PerlProc_execvp(tmps,EXEC_ARGV_CAST(PL_Argv));
|
|
else
|
|
PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv));
|
|
PERL_FPU_POST_EXEC
|
|
if (ckWARN(WARN_EXEC))
|
|
Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
|
|
(really ? tmps : PL_Argv[0]), Strerror(errno));
|
|
if (do_report) {
|
|
int e = errno;
|
|
|
|
PerlLIO_write(fd, (void*)&e, sizeof(int));
|
|
PerlLIO_close(fd);
|
|
}
|
|
}
|
|
do_execfree();
|
|
#endif
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
Perl_do_execfree(pTHX)
|
|
{
|
|
if (PL_Argv) {
|
|
Safefree(PL_Argv);
|
|
PL_Argv = Null(char **);
|
|
}
|
|
if (PL_Cmd) {
|
|
Safefree(PL_Cmd);
|
|
PL_Cmd = Nullch;
|
|
}
|
|
}
|
|
|
|
#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
|
|
|
|
bool
|
|
Perl_do_exec(pTHX_ char *cmd)
|
|
{
|
|
return do_exec3(cmd,0,0);
|
|
}
|
|
|
|
bool
|
|
Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
|
|
{
|
|
register char **a;
|
|
register char *s;
|
|
|
|
while (*cmd && isSPACE(*cmd))
|
|
cmd++;
|
|
|
|
/* save an extra exec if possible */
|
|
|
|
#ifdef CSH
|
|
{
|
|
char flags[PERL_FLAGS_MAX];
|
|
if (strnEQ(cmd,PL_cshname,PL_cshlen) &&
|
|
strnEQ(cmd+PL_cshlen," -c",3)) {
|
|
#ifdef HAS_STRLCPY
|
|
strlcpy(flags, "-c", PERL_FLAGS_MAX);
|
|
#else
|
|
strcpy(flags,"-c");
|
|
#endif
|
|
s = cmd+PL_cshlen+3;
|
|
if (*s == 'f') {
|
|
s++;
|
|
#ifdef HAS_STRLCPY
|
|
strlcat(flags, "f", PERL_FLAGS_MAX);
|
|
#else
|
|
strcat(flags,"f");
|
|
#endif
|
|
}
|
|
if (*s == ' ')
|
|
s++;
|
|
if (*s++ == '\'') {
|
|
char *ncmd = s;
|
|
|
|
while (*s)
|
|
s++;
|
|
if (s[-1] == '\n')
|
|
*--s = '\0';
|
|
if (s[-1] == '\'') {
|
|
*--s = '\0';
|
|
PERL_FPU_PRE_EXEC
|
|
PerlProc_execl(PL_cshname,"csh", flags, ncmd, (char*)0);
|
|
PERL_FPU_POST_EXEC
|
|
*s = '\'';
|
|
return FALSE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif /* CSH */
|
|
|
|
/* see if there are shell metacharacters in it */
|
|
|
|
if (*cmd == '.' && isSPACE(cmd[1]))
|
|
goto doshell;
|
|
|
|
if (strnEQ(cmd,"exec",4) && isSPACE(cmd[4]))
|
|
goto doshell;
|
|
|
|
for (s = cmd; *s && isALNUM(*s); s++) ; /* catch VAR=val gizmo */
|
|
if (*s == '=')
|
|
goto doshell;
|
|
|
|
for (s = cmd; *s; s++) {
|
|
if (*s != ' ' && !isALPHA(*s) &&
|
|
strchr("$&*(){}[]'\";\\|?<>~`\n",*s)) {
|
|
if (*s == '\n' && !s[1]) {
|
|
*s = '\0';
|
|
break;
|
|
}
|
|
/* handle the 2>&1 construct at the end */
|
|
if (*s == '>' && s[1] == '&' && s[2] == '1'
|
|
&& s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
|
|
&& (!s[3] || isSPACE(s[3])))
|
|
{
|
|
char *t = s + 3;
|
|
|
|
while (*t && isSPACE(*t))
|
|
++t;
|
|
if (!*t && (PerlLIO_dup2(1,2) != -1)) {
|
|
s[-2] = '\0';
|
|
break;
|
|
}
|
|
}
|
|
doshell:
|
|
PERL_FPU_PRE_EXEC
|
|
PerlProc_execl(PL_sh_path, "sh", "-c", cmd, (char*)0);
|
|
PERL_FPU_POST_EXEC
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
New(402,PL_Argv, (s - cmd) / 2 + 2, char*);
|
|
PL_Cmd = savepvn(cmd, s-cmd);
|
|
a = PL_Argv;
|
|
for (s = PL_Cmd; *s;) {
|
|
while (*s && isSPACE(*s)) s++;
|
|
if (*s)
|
|
*(a++) = s;
|
|
while (*s && !isSPACE(*s)) s++;
|
|
if (*s)
|
|
*s++ = '\0';
|
|
}
|
|
*a = Nullch;
|
|
if (PL_Argv[0]) {
|
|
PERL_FPU_PRE_EXEC
|
|
PerlProc_execvp(PL_Argv[0],PL_Argv);
|
|
PERL_FPU_POST_EXEC
|
|
if (errno == ENOEXEC) { /* for system V NIH syndrome */
|
|
do_execfree();
|
|
goto doshell;
|
|
}
|
|
{
|
|
int e = errno;
|
|
|
|
if (ckWARN(WARN_EXEC))
|
|
Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s",
|
|
PL_Argv[0], Strerror(errno));
|
|
if (do_report) {
|
|
PerlLIO_write(fd, (void*)&e, sizeof(int));
|
|
PerlLIO_close(fd);
|
|
}
|
|
}
|
|
}
|
|
do_execfree();
|
|
return FALSE;
|
|
}
|
|
|
|
#endif /* OS2 || WIN32 */
|
|
|
|
I32
|
|
Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
|
|
{
|
|
register I32 val;
|
|
register I32 val2;
|
|
register I32 tot = 0;
|
|
const char *what;
|
|
char *s;
|
|
SV **oldmark = mark;
|
|
STRLEN n_a;
|
|
|
|
#define APPLY_TAINT_PROPER() \
|
|
STMT_START { \
|
|
if (PL_tainted) { TAINT_PROPER(what); } \
|
|
} STMT_END
|
|
|
|
/* This is a first heuristic; it doesn't catch tainting magic. */
|
|
if (PL_tainting) {
|
|
while (++mark <= sp) {
|
|
if (SvTAINTED(*mark)) {
|
|
TAINT;
|
|
break;
|
|
}
|
|
}
|
|
mark = oldmark;
|
|
}
|
|
switch (type) {
|
|
case OP_CHMOD:
|
|
what = "chmod";
|
|
APPLY_TAINT_PROPER();
|
|
if (++mark <= sp) {
|
|
val = SvIVx(*mark);
|
|
APPLY_TAINT_PROPER();
|
|
tot = sp - mark;
|
|
while (++mark <= sp) {
|
|
char *name = SvPVx(*mark, n_a);
|
|
APPLY_TAINT_PROPER();
|
|
if (PerlLIO_chmod(name, val))
|
|
tot--;
|
|
}
|
|
}
|
|
break;
|
|
#ifdef HAS_CHOWN
|
|
case OP_CHOWN:
|
|
what = "chown";
|
|
APPLY_TAINT_PROPER();
|
|
if (sp - mark > 2) {
|
|
val = SvIVx(*++mark);
|
|
val2 = SvIVx(*++mark);
|
|
APPLY_TAINT_PROPER();
|
|
tot = sp - mark;
|
|
while (++mark <= sp) {
|
|
char *name = SvPVx(*mark, n_a);
|
|
APPLY_TAINT_PROPER();
|
|
if (PerlLIO_chown(name, val, val2))
|
|
tot--;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
/*
|
|
XXX Should we make lchown() directly available from perl?
|
|
For now, we'll let Configure test for HAS_LCHOWN, but do
|
|
nothing in the core.
|
|
--AD 5/1998
|
|
*/
|
|
#ifdef HAS_KILL
|
|
case OP_KILL:
|
|
what = "kill";
|
|
APPLY_TAINT_PROPER();
|
|
if (mark == sp)
|
|
break;
|
|
s = SvPVx(*++mark, n_a);
|
|
if (isALPHA(*s)) {
|
|
if (*s == 'S' && s[1] == 'I' && s[2] == 'G')
|
|
s += 3;
|
|
if ((val = whichsig(s)) < 0)
|
|
Perl_croak(aTHX_ "Unrecognized signal name \"%s\"",s);
|
|
}
|
|
else
|
|
val = SvIVx(*mark);
|
|
APPLY_TAINT_PROPER();
|
|
tot = sp - mark;
|
|
#ifdef VMS
|
|
/* kill() doesn't do process groups (job trees?) under VMS */
|
|
if (val < 0) val = -val;
|
|
if (val == SIGKILL) {
|
|
# include <starlet.h>
|
|
/* Use native sys$delprc() to insure that target process is
|
|
* deleted; supervisor-mode images don't pay attention to
|
|
* CRTL's emulation of Unix-style signals and kill()
|
|
*/
|
|
while (++mark <= sp) {
|
|
I32 proc = SvIVx(*mark);
|
|
register unsigned long int __vmssts;
|
|
APPLY_TAINT_PROPER();
|
|
if (!((__vmssts = sys$delprc(&proc,0)) & 1)) {
|
|
tot--;
|
|
switch (__vmssts) {
|
|
case SS$_NONEXPR:
|
|
case SS$_NOSUCHNODE:
|
|
SETERRNO(ESRCH,__vmssts);
|
|
break;
|
|
case SS$_NOPRIV:
|
|
SETERRNO(EPERM,__vmssts);
|
|
break;
|
|
default:
|
|
SETERRNO(EVMSERR,__vmssts);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
if (val < 0) {
|
|
val = -val;
|
|
while (++mark <= sp) {
|
|
I32 proc = SvIVx(*mark);
|
|
APPLY_TAINT_PROPER();
|
|
#ifdef HAS_KILLPG
|
|
if (PerlProc_killpg(proc,val)) /* BSD */
|
|
#else
|
|
if (PerlProc_kill(-proc,val)) /* SYSV */
|
|
#endif
|
|
tot--;
|
|
}
|
|
}
|
|
else {
|
|
while (++mark <= sp) {
|
|
I32 proc = SvIVx(*mark);
|
|
APPLY_TAINT_PROPER();
|
|
if (PerlProc_kill(proc, val))
|
|
tot--;
|
|
}
|
|
}
|
|
break;
|
|
#endif
|
|
case OP_UNLINK:
|
|
what = "unlink";
|
|
APPLY_TAINT_PROPER();
|
|
tot = sp - mark;
|
|
while (++mark <= sp) {
|
|
s = SvPVx(*mark, n_a);
|
|
APPLY_TAINT_PROPER();
|
|
if (PL_euid || PL_unsafe) {
|
|
if (UNLINK(s))
|
|
tot--;
|
|
}
|
|
else { /* don't let root wipe out directories without -U */
|
|
if (PerlLIO_lstat(s,&PL_statbuf) < 0 || S_ISDIR(PL_statbuf.st_mode))
|
|
tot--;
|
|
else {
|
|
if (UNLINK(s))
|
|
tot--;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
#ifdef HAS_UTIME
|
|
case OP_UTIME:
|
|
what = "utime";
|
|
APPLY_TAINT_PROPER();
|
|
if (sp - mark > 2) {
|
|
#if defined(I_UTIME) || defined(VMS)
|
|
struct utimbuf utbuf;
|
|
#else
|
|
struct {
|
|
Time_t actime;
|
|
Time_t modtime;
|
|
} utbuf;
|
|
#endif
|
|
|
|
SV* accessed = *++mark;
|
|
SV* modified = *++mark;
|
|
void * utbufp = &utbuf;
|
|
|
|
/* Be like C, and if both times are undefined, let the C
|
|
* library figure out what to do. This usually means
|
|
* "current time". */
|
|
|
|
if ( accessed == &PL_sv_undef && modified == &PL_sv_undef )
|
|
utbufp = NULL;
|
|
else {
|
|
Zero(&utbuf, sizeof utbuf, char);
|
|
#ifdef BIG_TIME
|
|
utbuf.actime = (Time_t)SvNVx(accessed); /* time accessed */
|
|
utbuf.modtime = (Time_t)SvNVx(modified); /* time modified */
|
|
#else
|
|
utbuf.actime = (Time_t)SvIVx(accessed); /* time accessed */
|
|
utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
|
|
#endif
|
|
}
|
|
APPLY_TAINT_PROPER();
|
|
tot = sp - mark;
|
|
while (++mark <= sp) {
|
|
char *name = SvPVx(*mark, n_a);
|
|
APPLY_TAINT_PROPER();
|
|
if (PerlLIO_utime(name, utbufp))
|
|
tot--;
|
|
}
|
|
}
|
|
else
|
|
tot = 0;
|
|
break;
|
|
#endif
|
|
}
|
|
return tot;
|
|
|
|
#undef APPLY_TAINT_PROPER
|
|
}
|
|
|
|
/* Do the permissions allow some operation? Assumes statcache already set. */
|
|
#ifndef VMS /* VMS' cando is in vms.c */
|
|
bool
|
|
Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register Stat_t *statbufp)
|
|
/* Note: we use `effective' both for uids and gids.
|
|
* Here we are betting on Uid_t being equal or wider than Gid_t. */
|
|
{
|
|
#ifdef DOSISH
|
|
/* [Comments and code from Len Reed]
|
|
* MS-DOS "user" is similar to UNIX's "superuser," but can't write
|
|
* to write-protected files. The execute permission bit is set
|
|
* by the Miscrosoft C library stat() function for the following:
|
|
* .exe files
|
|
* .com files
|
|
* .bat files
|
|
* directories
|
|
* All files and directories are readable.
|
|
* Directories and special files, e.g. "CON", cannot be
|
|
* write-protected.
|
|
* [Comment by Tom Dinger -- a directory can have the write-protect
|
|
* bit set in the file system, but DOS permits changes to
|
|
* the directory anyway. In addition, all bets are off
|
|
* here for networked software, such as Novell and
|
|
* Sun's PC-NFS.]
|
|
*/
|
|
|
|
/* Atari stat() does pretty much the same thing. we set x_bit_set_in_stat
|
|
* too so it will actually look into the files for magic numbers
|
|
*/
|
|
return (mode & statbufp->st_mode) ? TRUE : FALSE;
|
|
|
|
#else /* ! DOSISH */
|
|
if ((effective ? PL_euid : PL_uid) == 0) { /* root is special */
|
|
if (mode == S_IXUSR) {
|
|
if (statbufp->st_mode & 0111 || S_ISDIR(statbufp->st_mode))
|
|
return TRUE;
|
|
}
|
|
else
|
|
return TRUE; /* root reads and writes anything */
|
|
return FALSE;
|
|
}
|
|
if (statbufp->st_uid == (effective ? PL_euid : PL_uid) ) {
|
|
if (statbufp->st_mode & mode)
|
|
return TRUE; /* ok as "user" */
|
|
}
|
|
else if (ingroup(statbufp->st_gid,effective)) {
|
|
if (statbufp->st_mode & mode >> 3)
|
|
return TRUE; /* ok as "group" */
|
|
}
|
|
else if (statbufp->st_mode & mode >> 6)
|
|
return TRUE; /* ok as "other" */
|
|
return FALSE;
|
|
#endif /* ! DOSISH */
|
|
}
|
|
#endif /* ! VMS */
|
|
|
|
bool
|
|
Perl_ingroup(pTHX_ Gid_t testgid, Uid_t effective)
|
|
{
|
|
#ifdef MACOS_TRADITIONAL
|
|
/* This is simply not correct for AppleShare, but fix it yerself. */
|
|
return TRUE;
|
|
#else
|
|
if (testgid == (effective ? PL_egid : PL_gid))
|
|
return TRUE;
|
|
#ifdef HAS_GETGROUPS
|
|
#ifndef NGROUPS
|
|
#define NGROUPS 32
|
|
#endif
|
|
{
|
|
Groups_t gary[NGROUPS];
|
|
I32 anum;
|
|
|
|
anum = getgroups(NGROUPS,gary);
|
|
while (--anum >= 0)
|
|
if (gary[anum] == testgid)
|
|
return TRUE;
|
|
}
|
|
#endif
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
|
|
|
|
I32
|
|
Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
|
|
{
|
|
key_t key;
|
|
I32 n, flags;
|
|
|
|
key = (key_t)SvNVx(*++mark);
|
|
n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
|
|
flags = SvIVx(*++mark);
|
|
SETERRNO(0,0);
|
|
switch (optype)
|
|
{
|
|
#ifdef HAS_MSG
|
|
case OP_MSGGET:
|
|
return msgget(key, flags);
|
|
#endif
|
|
#ifdef HAS_SEM
|
|
case OP_SEMGET:
|
|
return semget(key, n, flags);
|
|
#endif
|
|
#ifdef HAS_SHM
|
|
case OP_SHMGET:
|
|
return shmget(key, n, flags);
|
|
#endif
|
|
#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
|
|
default:
|
|
Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
|
|
#endif
|
|
}
|
|
return -1; /* should never happen */
|
|
}
|
|
|
|
I32
|
|
Perl_do_ipcctl(pTHX_ I32 optype, SV **mark, SV **sp)
|
|
{
|
|
SV *astr;
|
|
char *a;
|
|
I32 id, n, cmd, infosize, getinfo;
|
|
I32 ret = -1;
|
|
|
|
id = SvIVx(*++mark);
|
|
n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
|
|
cmd = SvIVx(*++mark);
|
|
astr = *++mark;
|
|
infosize = 0;
|
|
getinfo = (cmd == IPC_STAT);
|
|
|
|
switch (optype)
|
|
{
|
|
#ifdef HAS_MSG
|
|
case OP_MSGCTL:
|
|
if (cmd == IPC_STAT || cmd == IPC_SET)
|
|
infosize = sizeof(struct msqid_ds);
|
|
break;
|
|
#endif
|
|
#ifdef HAS_SHM
|
|
case OP_SHMCTL:
|
|
if (cmd == IPC_STAT || cmd == IPC_SET)
|
|
infosize = sizeof(struct shmid_ds);
|
|
break;
|
|
#endif
|
|
#ifdef HAS_SEM
|
|
case OP_SEMCTL:
|
|
#ifdef Semctl
|
|
if (cmd == IPC_STAT || cmd == IPC_SET)
|
|
infosize = sizeof(struct semid_ds);
|
|
else if (cmd == GETALL || cmd == SETALL)
|
|
{
|
|
struct semid_ds semds;
|
|
union semun semun;
|
|
#ifdef EXTRA_F_IN_SEMUN_BUF
|
|
semun.buff = &semds;
|
|
#else
|
|
semun.buf = &semds;
|
|
#endif
|
|
getinfo = (cmd == GETALL);
|
|
if (Semctl(id, 0, IPC_STAT, semun) == -1)
|
|
return -1;
|
|
infosize = semds.sem_nsems * sizeof(short);
|
|
/* "short" is technically wrong but much more portable
|
|
than guessing about u_?short(_t)? */
|
|
}
|
|
#else
|
|
Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
|
|
#endif
|
|
break;
|
|
#endif
|
|
#if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM)
|
|
default:
|
|
Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
|
|
#endif
|
|
}
|
|
|
|
if (infosize)
|
|
{
|
|
STRLEN len;
|
|
if (getinfo)
|
|
{
|
|
SvPV_force(astr, len);
|
|
a = SvGROW(astr, infosize+1);
|
|
}
|
|
else
|
|
{
|
|
a = SvPV(astr, len);
|
|
if (len != infosize)
|
|
Perl_croak(aTHX_ "Bad arg length for %s, is %lu, should be %ld",
|
|
PL_op_desc[optype],
|
|
(unsigned long)len,
|
|
(long)infosize);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
IV i = SvIV(astr);
|
|
a = INT2PTR(char *,i); /* ouch */
|
|
}
|
|
SETERRNO(0,0);
|
|
switch (optype)
|
|
{
|
|
#ifdef HAS_MSG
|
|
case OP_MSGCTL:
|
|
ret = msgctl(id, cmd, (struct msqid_ds *)a);
|
|
break;
|
|
#endif
|
|
#ifdef HAS_SEM
|
|
case OP_SEMCTL: {
|
|
#ifdef Semctl
|
|
union semun unsemds;
|
|
|
|
#ifdef EXTRA_F_IN_SEMUN_BUF
|
|
unsemds.buff = (struct semid_ds *)a;
|
|
#else
|
|
unsemds.buf = (struct semid_ds *)a;
|
|
#endif
|
|
ret = Semctl(id, n, cmd, unsemds);
|
|
#else
|
|
Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]);
|
|
#endif
|
|
}
|
|
break;
|
|
#endif
|
|
#ifdef HAS_SHM
|
|
case OP_SHMCTL:
|
|
ret = shmctl(id, cmd, (struct shmid_ds *)a);
|
|
break;
|
|
#endif
|
|
}
|
|
if (getinfo && ret >= 0) {
|
|
SvCUR_set(astr, infosize);
|
|
*SvEND(astr) = '\0';
|
|
SvSETMAGIC(astr);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
I32
|
|
Perl_do_msgsnd(pTHX_ SV **mark, SV **sp)
|
|
{
|
|
#ifdef HAS_MSG
|
|
SV *mstr;
|
|
char *mbuf;
|
|
I32 id, msize, flags;
|
|
STRLEN len;
|
|
|
|
id = SvIVx(*++mark);
|
|
mstr = *++mark;
|
|
flags = SvIVx(*++mark);
|
|
mbuf = SvPV(mstr, len);
|
|
if ((msize = len - sizeof(long)) < 0)
|
|
Perl_croak(aTHX_ "Arg too short for msgsnd");
|
|
SETERRNO(0,0);
|
|
return msgsnd(id, (struct msgbuf *)mbuf, msize, flags);
|
|
#else
|
|
Perl_croak(aTHX_ "msgsnd not implemented");
|
|
#endif
|
|
}
|
|
|
|
I32
|
|
Perl_do_msgrcv(pTHX_ SV **mark, SV **sp)
|
|
{
|
|
#ifdef HAS_MSG
|
|
SV *mstr;
|
|
char *mbuf;
|
|
long mtype;
|
|
I32 id, msize, flags, ret;
|
|
STRLEN len;
|
|
|
|
id = SvIVx(*++mark);
|
|
mstr = *++mark;
|
|
/* suppress warning when reading into undef var --jhi */
|
|
if (! SvOK(mstr))
|
|
sv_setpvn(mstr, "", 0);
|
|
msize = SvIVx(*++mark);
|
|
mtype = (long)SvIVx(*++mark);
|
|
flags = SvIVx(*++mark);
|
|
SvPV_force(mstr, len);
|
|
mbuf = SvGROW(mstr, sizeof(long)+msize+1);
|
|
|
|
SETERRNO(0,0);
|
|
ret = msgrcv(id, (struct msgbuf *)mbuf, msize, mtype, flags);
|
|
if (ret >= 0) {
|
|
SvCUR_set(mstr, sizeof(long)+ret);
|
|
*SvEND(mstr) = '\0';
|
|
#ifndef INCOMPLETE_TAINTS
|
|
/* who knows who has been playing with this message? */
|
|
SvTAINTED_on(mstr);
|
|
#endif
|
|
}
|
|
return ret;
|
|
#else
|
|
Perl_croak(aTHX_ "msgrcv not implemented");
|
|
#endif
|
|
}
|
|
|
|
I32
|
|
Perl_do_semop(pTHX_ SV **mark, SV **sp)
|
|
{
|
|
#ifdef HAS_SEM
|
|
SV *opstr;
|
|
char *opbuf;
|
|
I32 id;
|
|
STRLEN opsize;
|
|
|
|
id = SvIVx(*++mark);
|
|
opstr = *++mark;
|
|
opbuf = SvPV(opstr, opsize);
|
|
if (opsize < 3 * SHORTSIZE
|
|
|| (opsize % (3 * SHORTSIZE))) {
|
|
SETERRNO(EINVAL,LIB_INVARG);
|
|
return -1;
|
|
}
|
|
SETERRNO(0,0);
|
|
/* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
|
|
{
|
|
int nsops = opsize / (3 * sizeof (short));
|
|
int i = nsops;
|
|
short *ops = (short *) opbuf;
|
|
short *o = ops;
|
|
struct sembuf *temps, *t;
|
|
I32 result;
|
|
|
|
New (0, temps, nsops, struct sembuf);
|
|
t = temps;
|
|
while (i--) {
|
|
t->sem_num = *o++;
|
|
t->sem_op = *o++;
|
|
t->sem_flg = *o++;
|
|
t++;
|
|
}
|
|
result = semop(id, temps, nsops);
|
|
t = temps;
|
|
o = ops;
|
|
i = nsops;
|
|
while (i--) {
|
|
*o++ = t->sem_num;
|
|
*o++ = t->sem_op;
|
|
*o++ = t->sem_flg;
|
|
t++;
|
|
}
|
|
Safefree(temps);
|
|
return result;
|
|
}
|
|
#else
|
|
Perl_croak(aTHX_ "semop not implemented");
|
|
#endif
|
|
}
|
|
|
|
I32
|
|
Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp)
|
|
{
|
|
#ifdef HAS_SHM
|
|
SV *mstr;
|
|
char *mbuf, *shm;
|
|
I32 id, mpos, msize;
|
|
STRLEN len;
|
|
struct shmid_ds shmds;
|
|
|
|
id = SvIVx(*++mark);
|
|
mstr = *++mark;
|
|
mpos = SvIVx(*++mark);
|
|
msize = SvIVx(*++mark);
|
|
SETERRNO(0,0);
|
|
if (shmctl(id, IPC_STAT, &shmds) == -1)
|
|
return -1;
|
|
if (mpos < 0 || msize < 0 || mpos + msize > shmds.shm_segsz) {
|
|
SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */
|
|
return -1;
|
|
}
|
|
shm = (char *)shmat(id, (char*)NULL, (optype == OP_SHMREAD) ? SHM_RDONLY : 0);
|
|
if (shm == (char *)-1) /* I hate System V IPC, I really do */
|
|
return -1;
|
|
if (optype == OP_SHMREAD) {
|
|
/* suppress warning when reading into undef var (tchrist 3/Mar/00) */
|
|
if (! SvOK(mstr))
|
|
sv_setpvn(mstr, "", 0);
|
|
SvPV_force(mstr, len);
|
|
mbuf = SvGROW(mstr, msize+1);
|
|
|
|
Copy(shm + mpos, mbuf, msize, char);
|
|
SvCUR_set(mstr, msize);
|
|
*SvEND(mstr) = '\0';
|
|
SvSETMAGIC(mstr);
|
|
#ifndef INCOMPLETE_TAINTS
|
|
/* who knows who has been playing with this shared memory? */
|
|
SvTAINTED_on(mstr);
|
|
#endif
|
|
}
|
|
else {
|
|
I32 n;
|
|
|
|
mbuf = SvPV(mstr, len);
|
|
if ((n = len) > msize)
|
|
n = msize;
|
|
Copy(mbuf, shm + mpos, n, char);
|
|
if (n < msize)
|
|
memzero(shm + mpos + n, msize - n);
|
|
}
|
|
return shmdt(shm);
|
|
#else
|
|
Perl_croak(aTHX_ "shm I/O not implemented");
|
|
#endif
|
|
}
|
|
|
|
#endif /* SYSV IPC */
|
|
|
|
/*
|
|
=head1 IO Functions
|
|
|
|
=for apidoc start_glob
|
|
|
|
Function called by C<do_readline> to spawn a glob (or do the glob inside
|
|
perl on VMS). This code used to be inline, but now perl uses C<File::Glob>
|
|
this glob starter is only used by miniperl during the build process.
|
|
Moving it away shrinks pp_hot.c; shrinking pp_hot.c helps speed perl up.
|
|
|
|
=cut
|
|
*/
|
|
|
|
PerlIO *
|
|
Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
|
|
{
|
|
SV *tmpcmd = NEWSV(55, 0);
|
|
PerlIO *fp;
|
|
ENTER;
|
|
SAVEFREESV(tmpcmd);
|
|
#ifdef VMS /* expand the wildcards right here, rather than opening a pipe, */
|
|
/* since spawning off a process is a real performance hit */
|
|
{
|
|
#include <descrip.h>
|
|
#include <lib$routines.h>
|
|
#include <nam.h>
|
|
#include <rmsdef.h>
|
|
char rslt[NAM$C_MAXRSS+1+sizeof(unsigned short int)] = {'\0','\0'};
|
|
char vmsspec[NAM$C_MAXRSS+1];
|
|
char *rstr = rslt + sizeof(unsigned short int), *begin, *end, *cp;
|
|
$DESCRIPTOR(dfltdsc,"SYS$DISK:[]*.*;");
|
|
PerlIO *tmpfp;
|
|
STRLEN i;
|
|
struct dsc$descriptor_s wilddsc
|
|
= {0, DSC$K_DTYPE_T, DSC$K_CLASS_S, 0};
|
|
struct dsc$descriptor_vs rsdsc
|
|
= {sizeof rslt, DSC$K_DTYPE_VT, DSC$K_CLASS_VS, rslt};
|
|
unsigned long int cxt = 0, sts = 0, ok = 1, hasdir = 0, hasver = 0, isunix = 0;
|
|
|
|
/* We could find out if there's an explicit dev/dir or version
|
|
by peeking into lib$find_file's internal context at
|
|
((struct NAM *)((struct FAB *)cxt)->fab$l_nam)->nam$l_fnb
|
|
but that's unsupported, so I don't want to do it now and
|
|
have it bite someone in the future. */
|
|
cp = SvPV(tmpglob,i);
|
|
for (; i; i--) {
|
|
if (cp[i] == ';') hasver = 1;
|
|
if (cp[i] == '.') {
|
|
if (sts) hasver = 1;
|
|
else sts = 1;
|
|
}
|
|
if (cp[i] == '/') {
|
|
hasdir = isunix = 1;
|
|
break;
|
|
}
|
|
if (cp[i] == ']' || cp[i] == '>' || cp[i] == ':') {
|
|
hasdir = 1;
|
|
break;
|
|
}
|
|
}
|
|
if ((tmpfp = PerlIO_tmpfile()) != NULL) {
|
|
Stat_t st;
|
|
if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
|
|
ok = ((wilddsc.dsc$a_pointer = tovmspath(SvPVX(tmpglob),vmsspec)) != NULL);
|
|
else ok = ((wilddsc.dsc$a_pointer = tovmsspec(SvPVX(tmpglob),vmsspec)) != NULL);
|
|
if (ok) wilddsc.dsc$w_length = (unsigned short int) strlen(wilddsc.dsc$a_pointer);
|
|
for (cp=wilddsc.dsc$a_pointer; ok && cp && *cp; cp++)
|
|
if (*cp == '?') *cp = '%'; /* VMS style single-char wildcard */
|
|
while (ok && ((sts = lib$find_file(&wilddsc,&rsdsc,&cxt,
|
|
&dfltdsc,NULL,NULL,NULL))&1)) {
|
|
/* with varying string, 1st word of buffer contains result length */
|
|
end = rstr + *((unsigned short int*)rslt);
|
|
if (!hasver) while (*end != ';' && end > rstr) end--;
|
|
*(end++) = '\n'; *end = '\0';
|
|
for (cp = rstr; *cp; cp++) *cp = _tolower(*cp);
|
|
if (hasdir) {
|
|
if (isunix) trim_unixpath(rstr,SvPVX(tmpglob),1);
|
|
begin = rstr;
|
|
}
|
|
else {
|
|
begin = end;
|
|
while (*(--begin) != ']' && *begin != '>') ;
|
|
++begin;
|
|
}
|
|
ok = (PerlIO_puts(tmpfp,begin) != EOF);
|
|
}
|
|
if (cxt) (void)lib$find_file_end(&cxt);
|
|
if (ok && sts != RMS$_NMF &&
|
|
sts != RMS$_DNF && sts != RMS_FNF) ok = 0;
|
|
if (!ok) {
|
|
if (!(sts & 1)) {
|
|
SETERRNO((sts == RMS$_SYN ? EINVAL : EVMSERR),sts);
|
|
}
|
|
PerlIO_close(tmpfp);
|
|
fp = NULL;
|
|
}
|
|
else {
|
|
PerlIO_rewind(tmpfp);
|
|
IoTYPE(io) = IoTYPE_RDONLY;
|
|
IoIFP(io) = fp = tmpfp;
|
|
IoFLAGS(io) &= ~IOf_UNTAINT; /* maybe redundant */
|
|
}
|
|
}
|
|
}
|
|
#else /* !VMS */
|
|
#ifdef MACOS_TRADITIONAL
|
|
sv_setpv(tmpcmd, "glob ");
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
sv_catpv(tmpcmd, " |");
|
|
#else
|
|
#ifdef DOSISH
|
|
#ifdef OS2
|
|
sv_setpv(tmpcmd, "for a in ");
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
sv_catpv(tmpcmd, "; do echo \"$a\\0\\c\"; done |");
|
|
#else
|
|
#ifdef DJGPP
|
|
sv_setpv(tmpcmd, "/dev/dosglob/"); /* File System Extension */
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
#else
|
|
sv_setpv(tmpcmd, "perlglob ");
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
sv_catpv(tmpcmd, " |");
|
|
#endif /* !DJGPP */
|
|
#endif /* !OS2 */
|
|
#else /* !DOSISH */
|
|
#if defined(CSH)
|
|
sv_setpvn(tmpcmd, PL_cshname, PL_cshlen);
|
|
sv_catpv(tmpcmd, " -cf 'set nonomatch; glob ");
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
sv_catpv(tmpcmd, "' 2>/dev/null |");
|
|
#else
|
|
sv_setpv(tmpcmd, "echo ");
|
|
sv_catsv(tmpcmd, tmpglob);
|
|
#if 'z' - 'a' == 25
|
|
sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\012\\012\\012\\012'|");
|
|
#else
|
|
sv_catpv(tmpcmd, "|tr -s ' \t\f\r' '\\n\\n\\n\\n'|");
|
|
#endif
|
|
#endif /* !CSH */
|
|
#endif /* !DOSISH */
|
|
#endif /* MACOS_TRADITIONAL */
|
|
(void)do_open(PL_last_in_gv, SvPVX(tmpcmd), SvCUR(tmpcmd),
|
|
FALSE, O_RDONLY, 0, Nullfp);
|
|
fp = IoIFP(io);
|
|
#endif /* !VMS */
|
|
LEAVE;
|
|
return fp;
|
|
}
|