| /* doio.c |
| * |
| * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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. |
| * |
| */ |
| |
| /* |
| * Far below them they saw the white waters pour into a foaming bowl, and |
| * then swirl darkly about a deep oval basin in the rocks, until they found |
| * their way out again through a narrow gate, and flowed away, fuming and |
| * chattering, into calmer and more level reaches. |
| * |
| * [p.684 of _The Lord of the Rings_, IV/vi: "The Forbidden Pool"] |
| */ |
| |
| /* This file contains functions that do the actual I/O on behalf of ops. |
| * For example, pp_print() calls the do_print() function in this file for |
| * each argument needing printing. |
| */ |
| |
| #include "EXTERN.h" |
| #define PERL_IN_DOIO_C |
| #include "perl.h" |
| |
| #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
| #ifndef HAS_SEM |
| #include <sys/ipc.h> |
| #endif |
| #ifdef HAS_MSG |
| #include <sys/msg.h> |
| #endif |
| #ifdef HAS_SHM |
| #include <sys/shm.h> |
| # ifndef HAS_SHMAT_PROTOTYPE |
| extern Shmat_t shmat (int, char *, int); |
| # endif |
| #endif |
| #endif |
| |
| #ifdef I_UTIME |
| # if defined(_MSC_VER) || defined(__MINGW32__) |
| # include <sys/utime.h> |
| # else |
| # include <utime.h> |
| # endif |
| #endif |
| |
| #ifdef O_EXCL |
| # define OPEN_EXCL O_EXCL |
| #else |
| # define OPEN_EXCL 0 |
| #endif |
| |
| #define PERL_MODE_MAX 8 |
| #define PERL_FLAGS_MAX 10 |
| |
| #include <signal.h> |
| |
| bool |
| Perl_do_openn(pTHX_ GV *gv, register const char *oname, I32 len, int as_raw, |
| int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp, |
| I32 num_svs) |
| { |
| dVAR; |
| register IO * const io = GvIOn(gv); |
| PerlIO *saveifp = NULL; |
| PerlIO *saveofp = NULL; |
| int savefd = -1; |
| char savetype = IoTYPE_CLOSED; |
| int writing = 0; |
| PerlIO *fp; |
| int fd; |
| int result; |
| bool was_fdopen = FALSE; |
| bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0; |
| char *type = NULL; |
| char mode[PERL_MODE_MAX]; /* file mode ("r\0", "rb\0", "ab\0" etc.) */ |
| SV *namesv; |
| |
| PERL_ARGS_ASSERT_DO_OPENN; |
| |
| Zero(mode,sizeof(mode),char); |
| PL_forkprocess = 1; /* assume true if no fork */ |
| |
| /* Collect default raw/crlf info from the op */ |
| if (PL_op && PL_op->op_type == OP_OPEN) { |
| /* set up IO layers */ |
| const U8 flags = PL_op->op_private; |
| in_raw = (flags & OPpOPEN_IN_RAW); |
| in_crlf = (flags & OPpOPEN_IN_CRLF); |
| out_raw = (flags & OPpOPEN_OUT_RAW); |
| out_crlf = (flags & OPpOPEN_OUT_CRLF); |
| } |
| |
| /* If currently open - close before we re-open */ |
| if (IoIFP(io)) { |
| fd = PerlIO_fileno(IoIFP(io)); |
| if (IoTYPE(io) == IoTYPE_STD) { |
| /* This is a clone of one of STD* handles */ |
| result = 0; |
| } |
| else if (fd >= 0 && fd <= PL_maxsysfd) { |
| /* This is one of the original STD* handles */ |
| saveifp = IoIFP(io); |
| saveofp = IoOFP(io); |
| savetype = IoTYPE(io); |
| savefd = fd; |
| result = 0; |
| } |
| else if (IoTYPE(io) == IoTYPE_PIPE) |
| result = PerlProc_pclose(IoIFP(io)); |
| else if (IoIFP(io) != IoOFP(io)) { |
| if (IoOFP(io)) { |
| result = PerlIO_close(IoOFP(io)); |
| PerlIO_close(IoIFP(io)); /* clear stdio, fd already closed */ |
| } |
| else |
| result = PerlIO_close(IoIFP(io)); |
| } |
| else |
| result = PerlIO_close(IoIFP(io)); |
| if (result == EOF && fd > PL_maxsysfd) { |
| /* Why is this not Perl_warn*() call ? */ |
| PerlIO_printf(Perl_error_log, |
| "Warning: unable to close filehandle %"HEKf" properly.\n", |
| HEKfARG(GvENAME_HEK(gv)) |
| ); |
| } |
| IoOFP(io) = IoIFP(io) = NULL; |
| } |
| |
| if (as_raw) { |
| /* sysopen style args, i.e. integer mode and permissions */ |
| STRLEN ix = 0; |
| const int appendtrunc = |
| 0 |
| #ifdef O_APPEND /* Not fully portable. */ |
| |O_APPEND |
| #endif |
| #ifdef O_TRUNC /* Not fully portable. */ |
| |O_TRUNC |
| #endif |
| ; |
| const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc; |
| int ismodifying; |
| |
| if (num_svs != 0) { |
| Perl_croak(aTHX_ "panic: sysopen with multiple args, num_svs=%ld", |
| (long) num_svs); |
| } |
| /* It's not always |
| |
| O_RDONLY 0 |
| O_WRONLY 1 |
| O_RDWR 2 |
| |
| It might be (in OS/390 and Mac OS Classic it is) |
| |
| O_WRONLY 1 |
| O_RDONLY 2 |
| O_RDWR 3 |
| |
| This means that simple & with O_RDWR would look |
| like O_RDONLY is present. Therefore we have to |
| be more careful. |
| */ |
| if ((ismodifying = (rawmode & modifyingmode))) { |
| if ((ismodifying & O_WRONLY) == O_WRONLY || |
| (ismodifying & O_RDWR) == O_RDWR || |
| (ismodifying & (O_CREAT|appendtrunc))) |
| TAINT_PROPER("sysopen"); |
| } |
| mode[ix++] = IoTYPE_NUMERIC; /* Marker to openn to use numeric "sysopen" */ |
| |
| #if defined(USE_64_BIT_RAWIO) && defined(O_LARGEFILE) |
| rawmode |= O_LARGEFILE; /* Transparently largefiley. */ |
| #endif |
| |
| IoTYPE(io) = PerlIO_intmode2str(rawmode, &mode[ix], &writing); |
| |
| namesv = newSVpvn_flags(oname, len, SVs_TEMP); |
| num_svs = 1; |
| svp = &namesv; |
| type = NULL; |
| fp = PerlIO_openn(aTHX_ type, mode, -1, rawmode, rawperm, NULL, num_svs, svp); |
| } |
| else { |
| /* Regular (non-sys) open */ |
| char *name; |
| STRLEN olen = len; |
| char *tend; |
| int dodup = 0; |
| |
| type = savepvn(oname, len); |
| tend = type+len; |
| SAVEFREEPV(type); |
| |
| /* Lose leading and trailing white space */ |
| while (isSPACE(*type)) |
| type++; |
| while (tend > type && isSPACE(tend[-1])) |
| *--tend = '\0'; |
| |
| if (num_svs) { |
| /* New style explicit name, type is just mode and layer info */ |
| #ifdef USE_STDIO |
| if (SvROK(*svp) && !strchr(oname,'&')) { |
| if (ckWARN(WARN_IO)) |
| Perl_warner(aTHX_ packWARN(WARN_IO), |
| "Can't open a reference"); |
| SETERRNO(EINVAL, LIB_INVARG); |
| goto say_false; |
| } |
| #endif /* USE_STDIO */ |
| name = (SvOK(*svp) || SvGMAGICAL(*svp)) ? |
| savesvpv (*svp) : savepvs (""); |
| SAVEFREEPV(name); |
| } |
| else { |
| name = type; |
| len = tend-type; |
| } |
| IoTYPE(io) = *type; |
| if ((*type == IoTYPE_RDWR) && /* scary */ |
| (*(type+1) == IoTYPE_RDONLY || *(type+1) == IoTYPE_WRONLY) && |
| ((!num_svs || (tend > type+1 && tend[-1] != IoTYPE_PIPE)))) { |
| TAINT_PROPER("open"); |
| mode[1] = *type++; |
| writing = 1; |
| } |
| |
| if (*type == IoTYPE_PIPE) { |
| if (num_svs) { |
| if (type[1] != IoTYPE_STD) { |
| unknown_open_mode: |
| Perl_croak(aTHX_ "Unknown open() mode '%.*s'", (int)olen, oname); |
| } |
| type++; |
| } |
| do { |
| type++; |
| } while (isSPACE(*type)); |
| if (!num_svs) { |
| 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"); |
| if (!num_svs && name[len-1] == '|') { |
| name[--len] = '\0' ; |
| if (ckWARN(WARN_PIPE)) |
| Perl_warner(aTHX_ packWARN(WARN_PIPE), "Can't open bidirectional pipe"); |
| } |
| mode[0] = 'w'; |
| writing = 1; |
| if (out_raw) |
| mode[1] = 'b'; |
| else if (out_crlf) |
| mode[1] = 't'; |
| if (num_svs > 1) { |
| fp = PerlProc_popen_list(mode, num_svs, svp); |
| } |
| else { |
| fp = PerlProc_popen(name,mode); |
| } |
| if (num_svs) { |
| if (*type) { |
| if (PerlIO_apply_layers(aTHX_ fp, mode, type) != 0) { |
| goto say_false; |
| } |
| } |
| } |
| } /* IoTYPE_PIPE */ |
| else if (*type == IoTYPE_WRONLY) { |
| TAINT_PROPER("open"); |
| type++; |
| if (*type == IoTYPE_WRONLY) { |
| /* Two IoTYPE_WRONLYs in a row make for an IoTYPE_APPEND. */ |
| mode[0] = IoTYPE(io) = IoTYPE_APPEND; |
| type++; |
| } |
| else { |
| mode[0] = 'w'; |
| } |
| writing = 1; |
| |
| if (out_raw) |
| mode[1] = 'b'; |
| else if (out_crlf) |
| mode[1] = 't'; |
| if (*type == '&') { |
| duplicity: |
| dodup = PERLIO_DUP_FD; |
| type++; |
| if (*type == '=') { |
| dodup = 0; |
| type++; |
| } |
| if (!num_svs && !*type && supplied_fp) { |
| /* "<+&" etc. is used by typemaps */ |
| fp = supplied_fp; |
| } |
| else { |
| PerlIO *that_fp = NULL; |
| if (num_svs > 1) { |
| /* diag_listed_as: More than one argument to '%s' open */ |
| Perl_croak(aTHX_ "More than one argument to '%c&' open",IoTYPE(io)); |
| } |
| while (isSPACE(*type)) |
| type++; |
| if (num_svs && (SvIOK(*svp) || (SvPOK(*svp) && looks_like_number(*svp)))) { |
| fd = SvUV(*svp); |
| num_svs = 0; |
| } |
| else if (isDIGIT(*type)) { |
| fd = atoi(type); |
| } |
| else { |
| const IO* thatio; |
| if (num_svs) { |
| thatio = sv_2io(*svp); |
| } |
| else { |
| GV * const thatgv = gv_fetchpvn_flags(type, tend - type, |
| 0, SVt_PVIO); |
| thatio = GvIO(thatgv); |
| } |
| if (!thatio) { |
| #ifdef EINVAL |
| SETERRNO(EINVAL,SS_IVCHAN); |
| #endif |
| goto say_false; |
| } |
| if ((that_fp = IoIFP(thatio))) { |
| /* Flush stdio buffer before dup. --mjd |
| * Unfortunately SEEK_CURing 0 seems to |
| * be optimized away on most platforms; |
| * only Solaris and Linux seem to flush |
| * on that. --jhi */ |
| #ifdef USE_SFIO |
| /* sfio fails to clear error on next |
| sfwrite, contrary to documentation. |
| -- Nicholas Clark */ |
| if (PerlIO_seek(that_fp, 0, SEEK_CUR) == -1) |
| PerlIO_clearerr(that_fp); |
| #endif |
| /* On the other hand, do all platforms |
| * take gracefully to flushing a read-only |
| * filehandle? Perhaps we should do |
| * fsetpos(src)+fgetpos(dst)? --nik */ |
| PerlIO_flush(that_fp); |
| fd = PerlIO_fileno(that_fp); |
| /* When dup()ing STDIN, STDOUT or STDERR |
| * explicitly set appropriate access mode */ |
| if (that_fp == PerlIO_stdout() |
| || that_fp == PerlIO_stderr()) |
| IoTYPE(io) = IoTYPE_WRONLY; |
| else if (that_fp == PerlIO_stdin()) |
| IoTYPE(io) = IoTYPE_RDONLY; |
| /* When dup()ing a socket, say result is |
| * one as well */ |
| else if (IoTYPE(thatio) == IoTYPE_SOCKET) |
| IoTYPE(io) = IoTYPE_SOCKET; |
| } |
| else |
| fd = -1; |
| } |
| if (!num_svs) |
| type = NULL; |
| 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 && fd >= 0) |
| PerlLIO_close(fd); |
| } |
| } |
| } |
| } /* & */ |
| else { |
| while (isSPACE(*type)) |
| type++; |
| if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
| type++; |
| fp = PerlIO_stdout(); |
| IoTYPE(io) = IoTYPE_STD; |
| if (num_svs > 1) { |
| /* diag_listed_as: More than one argument to '%s' open */ |
| Perl_croak(aTHX_ "More than one argument to '>%c' open",IoTYPE_STD); |
| } |
| } |
| else { |
| if (!num_svs) { |
| namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); |
| num_svs = 1; |
| svp = &namesv; |
| type = NULL; |
| } |
| 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) { |
| do { |
| type++; |
| } while (isSPACE(*type)); |
| mode[0] = 'r'; |
| if (in_raw) |
| mode[1] = 'b'; |
| else if (in_crlf) |
| mode[1] = 't'; |
| if (*type == '&') { |
| goto duplicity; |
| } |
| if (*type == IoTYPE_STD && (!type[1] || isSPACE(type[1]) || type[1] == ':')) { |
| type++; |
| fp = PerlIO_stdin(); |
| IoTYPE(io) = IoTYPE_STD; |
| if (num_svs > 1) { |
| /* diag_listed_as: More than one argument to '%s' open */ |
| Perl_croak(aTHX_ "More than one argument to '<%c' open",IoTYPE_STD); |
| } |
| } |
| else { |
| if (!num_svs) { |
| namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); |
| num_svs = 1; |
| svp = &namesv; |
| type = NULL; |
| } |
| 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'; |
| 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'; |
| |
| if (in_raw) |
| mode[1] = 'b'; |
| else if (in_crlf) |
| mode[1] = 't'; |
| |
| 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) { |
| while (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; |
| for (; isSPACE(*name); name++) |
| ; |
| mode[0] = 'r'; |
| |
| if (in_raw) |
| mode[1] = 'b'; |
| else if (in_crlf) |
| mode[1] = 't'; |
| |
| if (*name == '-' && name[1] == '\0') { |
| fp = PerlIO_stdin(); |
| IoTYPE(io) = IoTYPE_STD; |
| } |
| else { |
| if (!num_svs) { |
| namesv = newSVpvn_flags(type, tend - type, SVs_TEMP); |
| num_svs = 1; |
| svp = &namesv; |
| type = NULL; |
| } |
| fp = PerlIO_openn(aTHX_ type,mode,-1,0,0,NULL,num_svs,svp); |
| } |
| } |
| } |
| if (!fp) { |
| if (IoTYPE(io) == IoTYPE_RDONLY && ckWARN(WARN_NEWLINE) |
| && strchr(oname, '\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 %"HEKf |
| " only for input", |
| ((fp == PerlIO_stdout()) ? "OUT" : "ERR"), |
| HEKfARG(GvENAME_HEK(gv))); |
| } |
| else if ((IoTYPE(io) == IoTYPE_WRONLY) && fp == PerlIO_stdin()) { |
| Perl_warner(aTHX_ packWARN(WARN_IO), |
| "Filehandle STDIN reopened as %"HEKf" only for output", |
| HEKfARG(GvENAME_HEK(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; |
| |
| sv = *av_fetch(PL_fdpid,fd,TRUE); |
| SvUPGRADE(sv, SVt_IV); |
| pid = SvIVX(sv); |
| SvIV_set(sv, 0); |
| sv = *av_fetch(PL_fdpid,savefd,TRUE); |
| SvUPGRADE(sv, SVt_IV); |
| SvIV_set(sv, pid); |
| } |
| #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) { |
| dSAVE_ERRNO; |
| fcntl(fd,F_SETFD,fd > PL_maxsysfd); /* can change errno */ |
| RESTORE_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) = NULL; |
| 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) |
| { |
| dVAR; |
| register SV *sv; |
| #ifndef FLEXFILENAMES |
| int filedev; |
| int fileino; |
| #endif |
| Uid_t fileuid; |
| Gid_t filegid; |
| IO * const io = GvIOp(gv); |
| |
| PERL_ARGS_ASSERT_NEXTARGV; |
| |
| if (!PL_argvoutgv) |
| PL_argvoutgv = gv_fetchpvs("ARGVOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
| if (io && (IoFLAGS(io) & IOf_ARGV) && (IoFLAGS(io) & IOf_START)) { |
| IoFLAGS(io) &= ~IOf_START; |
| if (PL_inplace) { |
| assert(PL_defoutgv); |
| Perl_av_create_and_push(aTHX_ &PL_argvout_stack, |
| SvREFCNT_inc_simple_NN(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 NULL; |
| while (av_len(GvAV(gv)) >= 0) { |
| STRLEN oldlen; |
| sv = av_shift(GvAV(gv)); |
| SAVEFREESV(sv); |
| sv_setsv(GvSVn(gv),sv); |
| SvSETMAGIC(GvSV(gv)); |
| PL_oldname = SvPVx(GvSV(gv), oldlen); |
| if (do_open(gv,PL_oldname,oldlen,PL_inplace!=0,O_RDONLY,0,NULL)) { |
| if (PL_inplace) { |
| TAINT_PROPER("inplace open"); |
| if (oldlen == 1 && *PL_oldname == '-') { |
| setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, |
| 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)) { |
| Perl_ck_warner_d(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 && strNE(PL_inplace, "*")) { |
| const char *star = strchr(PL_inplace, '*'); |
| if (star) { |
| const char *begin = PL_inplace; |
| sv_setpvs(sv, ""); |
| 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_const(sv),&PL_statbuf) >= 0 |
| && PL_statbuf.st_dev == filedev |
| && PL_statbuf.st_ino == fileino) |
| #ifdef DJGPP |
| || ((_djstat_fail_bits & _STFAIL_TRUENAME)!=0) |
| #endif |
| ) |
| { |
| Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
| "Can't do inplace edit: %"SVf" would not be unique", |
| SVfARG(sv)); |
| do_close(gv,FALSE); |
| continue; |
| } |
| #endif |
| #ifdef HAS_RENAME |
| #if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC) |
| if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) { |
| Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
| "Can't rename %s to %"SVf": %s, skipping file", |
| PL_oldname, SVfARG(sv), Strerror(errno)); |
| do_close(gv,FALSE); |
| continue; |
| } |
| #else |
| do_close(gv,FALSE); |
| (void)PerlLIO_unlink(SvPVX_const(sv)); |
| (void)PerlLIO_rename(PL_oldname,SvPVX_const(sv)); |
| do_open(gv,(char*)SvPVX_const(sv),SvCUR(sv),TRUE,O_RDONLY,0,NULL); |
| #endif /* DOSISH */ |
| #else |
| (void)UNLINK(SvPVX_const(sv)); |
| if (link(PL_oldname,SvPVX_const(sv)) < 0) { |
| Perl_ck_warner_d(aTHX_ packWARN(WARN_INPLACE), |
| "Can't rename %s to %"SVf": %s, skipping file", |
| PL_oldname, SVfARG(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) { |
| Perl_ck_warner_d(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_oldname,oldlen); |
| SETERRNO(0,0); /* in case sprintf set errno */ |
| if (!Perl_do_openn(aTHX_ PL_argvoutgv, (char*)SvPVX_const(sv), |
| SvCUR(sv), TRUE, |
| #ifdef VMS |
| O_WRONLY|O_CREAT|O_TRUNC,0, |
| #else |
| O_WRONLY|O_CREAT|OPEN_EXCL,0600, |
| #endif |
| NULL, NULL, 0)) { |
| Perl_ck_warner_d(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 |
| (void)PerlLIO_chmod(PL_oldname,PL_filemode); |
| #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)) { |
| const 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 * const oldout = MUTABLE_GV(av_pop(PL_argvout_stack)); |
| setdefout(oldout); |
| SvREFCNT_dec(oldout); |
| return NULL; |
| } |
| setdefout(gv_fetchpvs("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO)); |
| } |
| return NULL; |
| } |
| |
| /* explicit renamed to avoid C++ conflict -- kja */ |
| bool |
| Perl_do_close(pTHX_ GV *gv, bool not_implicit) |
| { |
| dVAR; |
| bool retval; |
| IO *io; |
| |
| if (!gv) |
| gv = PL_argvgv; |
| if (!gv || !isGV_with_GP(gv)) { |
| if (not_implicit) |
| SETERRNO(EBADF,SS_IVCHAN); |
| return FALSE; |
| } |
| io = GvIO(gv); |
| if (!io) { /* never opened */ |
| if (not_implicit) { |
| report_evil_fh(gv); |
| 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) |
| { |
| dVAR; |
| bool retval = FALSE; |
| |
| PERL_ARGS_ASSERT_IO_CLOSE; |
| |
| if (IoIFP(io)) { |
| if (IoTYPE(io) == IoTYPE_PIPE) { |
| const int status = PerlProc_pclose(IoIFP(io)); |
| if (not_implicit) { |
| STATUS_NATIVE_CHILD_SET(status); |
| retval = (STATUS_UNIX == 0); |
| } |
| else { |
| retval = (status != -1); |
| } |
| } |
| else if (IoTYPE(io) == IoTYPE_STD) |
| retval = TRUE; |
| else { |
| if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */ |
| const 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 { |
| const bool prev_err = PerlIO_error(IoIFP(io)); |
| retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err); |
| } |
| } |
| IoOFP(io) = IoIFP(io) = NULL; |
| } |
| else if (not_implicit) { |
| SETERRNO(EBADF,SS_IVCHAN); |
| } |
| |
| return retval; |
| } |
| |
| bool |
| Perl_do_eof(pTHX_ GV *gv) |
| { |
| dVAR; |
| register IO * const io = GvIO(gv); |
| |
| PERL_ARGS_ASSERT_DO_EOF; |
| |
| if (!io) |
| return TRUE; |
| else if (IoTYPE(io) == IoTYPE_WRONLY) |
| report_wrongway_fh(gv, '>'); |
| |
| while (IoIFP(io)) { |
| 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 */ |
| } |
| |
| { |
| /* getc and ungetc can stomp on errno */ |
| dSAVE_ERRNO; |
| const int ch = PerlIO_getc(IoIFP(io)); |
| if (ch != EOF) { |
| (void)PerlIO_ungetc(IoIFP(io),ch); |
| RESTORE_ERRNO; |
| return FALSE; |
| } |
| RESTORE_ERRNO; |
| } |
| |
| 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) |
| { |
| dVAR; |
| IO *const io = GvIO(gv); |
| register PerlIO *fp; |
| |
| PERL_ARGS_ASSERT_DO_TELL; |
| |
| if (io && (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); |
| } |
| report_evil_fh(gv); |
| SETERRNO(EBADF,RMS_IFI); |
| return (Off_t)-1; |
| } |
| |
| bool |
| Perl_do_seek(pTHX_ GV *gv, Off_t pos, int whence) |
| { |
| dVAR; |
| IO *const io = GvIO(gv); |
| register PerlIO *fp; |
| |
| if (io && (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; |
| } |
| report_evil_fh(gv); |
| SETERRNO(EBADF,RMS_IFI); |
| return FALSE; |
| } |
| |
| Off_t |
| Perl_do_sysseek(pTHX_ GV *gv, Off_t pos, int whence) |
| { |
| dVAR; |
| IO *const io = GvIO(gv); |
| register PerlIO *fp; |
| |
| PERL_ARGS_ASSERT_DO_SYSSEEK; |
| |
| if (io && (fp = IoIFP(io))) |
| return PerlLIO_lseek(PerlIO_fileno(fp), pos, whence); |
| report_evil_fh(gv); |
| SETERRNO(EBADF,RMS_IFI); |
| return (Off_t)-1; |
| } |
| |
| int |
| Perl_mode_from_discipline(pTHX_ const char *s, STRLEN len) |
| { |
| int mode = O_BINARY; |
| if (s) { |
| 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 { |
| const 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; |
| } |
| |
| #if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) |
| I32 |
| my_chsize(int fd, Off_t length) |
| { |
| #ifdef F_FREESP |
| /* code courtesy of William Kucharski */ |
| #define HAS_CHSIZE |
| |
| 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 */ |
| struct flock fl; |
| 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 |
| Perl_croak_nocontext("truncate not implemented"); |
| #endif /* F_FREESP */ |
| return -1; |
| } |
| #endif /* !HAS_TRUNCATE && !HAS_CHSIZE */ |
| |
| bool |
| Perl_do_print(pTHX_ register SV *sv, PerlIO *fp) |
| { |
| dVAR; |
| |
| PERL_ARGS_ASSERT_DO_PRINT; |
| |
| /* assuming fp is checked earlier */ |
| if (!sv) |
| return TRUE; |
| if (SvTYPE(sv) == SVt_IV && SvIOK(sv)) { |
| assert(!SvGMAGICAL(sv)); |
| if (SvIsUV(sv)) |
| PerlIO_printf(fp, "%"UVuf, (UV)SvUVX(sv)); |
| else |
| PerlIO_printf(fp, "%"IVdf, (IV)SvIVX(sv)); |
| return !PerlIO_error(fp); |
| } |
| else { |
| STRLEN len; |
| /* Do this first to trigger any overloading. */ |
| const char *tmps = SvPV_const(sv, len); |
| U8 *tmpbuf = NULL; |
| bool happy = TRUE; |
| |
| if (PerlIO_isutf8(fp)) { |
| if (!SvUTF8(sv)) { |
| /* We don't modify the original scalar. */ |
| tmpbuf = bytes_to_utf8((const U8*) tmps, &len); |
| tmps = (char *) tmpbuf; |
| } |
| else if (ckWARN4_d(WARN_UTF8, WARN_SURROGATE, WARN_NON_UNICODE, WARN_NONCHAR)) { |
| (void) check_utf8_print((const U8*) tmps, len); |
| } |
| } |
| else if (DO_UTF8(sv)) { |
| STRLEN tmplen = len; |
| bool utf8 = TRUE; |
| U8 * const result = bytes_from_utf8((const U8*) tmps, &tmplen, &utf8); |
| if (!utf8) { |
| tmpbuf = result; |
| tmps = (char *) tmpbuf; |
| len = tmplen; |
| } |
| else { |
| assert((char *)result == tmps); |
| Perl_ck_warner_d(aTHX_ packWARN(WARN_UTF8), |
| "Wide character in %s", |
| PL_op ? OP_DESC(PL_op) : "print" |
| ); |
| /* Could also check that isn't one of the things to avoid |
| * in utf8 by using check_utf8_print(), but not doing so, |
| * since the stream isn't a UTF8 stream */ |
| } |
| } |
| /* 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)) |
| happy = FALSE; |
| Safefree(tmpbuf); |
| return happy ? !PerlIO_error(fp) : FALSE; |
| } |
| } |
| |
| I32 |
| Perl_my_stat_flags(pTHX_ const U32 flags) |
| { |
| dVAR; |
| dSP; |
| IO *io; |
| GV* gv; |
| |
| if (PL_op->op_flags & OPf_REF) { |
| EXTEND(SP,1); |
| gv = cGVOP_gv; |
| do_fstat: |
| if (gv == PL_defgv) |
| return PL_laststatval; |
| io = GvIO(gv); |
| do_fstat_have_io: |
| PL_laststype = OP_STAT; |
| PL_statgv = gv ? gv : (GV *)io; |
| sv_setpvs(PL_statname, ""); |
| if(io) { |
| if (IoIFP(io)) { |
| return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache)); |
| } else if (IoDIRP(io)) { |
| return (PL_laststatval = PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache)); |
| } |
| } |
| PL_laststatval = -1; |
| report_evil_fh(gv); |
| return -1; |
| } |
| else { |
| SV* const sv = PL_op->op_private & OPpFT_STACKING ? TOPs : POPs; |
| PUTBACK; |
| if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
| == OPpFT_STACKED) |
| return PL_laststatval; |
| else { |
| const char *s; |
| STRLEN len; |
| if ((gv = MAYBE_DEREF_GV_flags(sv,flags))) { |
| goto do_fstat; |
| } |
| else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) { |
| io = MUTABLE_IO(SvRV(sv)); |
| gv = NULL; |
| goto do_fstat_have_io; |
| } |
| |
| s = SvPV_flags_const(sv, len, flags); |
| PL_statgv = NULL; |
| sv_setpvn(PL_statname, s, len); |
| s = SvPVX_const(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; |
| } |
| } |
| } |
| |
| |
| I32 |
| Perl_my_lstat_flags(pTHX_ const U32 flags) |
| { |
| dVAR; |
| static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat"; |
| dSP; |
| SV *sv; |
| const char *file; |
| 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; |
| } |
| PL_laststatval = -1; |
| if (ckWARN(WARN_IO)) { |
| Perl_warner(aTHX_ packWARN(WARN_IO), |
| "Use of -l on filehandle %"HEKf, |
| HEKfARG(GvENAME_HEK(cGVOP_gv))); |
| } |
| return -1; |
| } |
| sv = PL_op->op_private & OPpFT_STACKING ? TOPs : POPs; |
| PUTBACK; |
| if ((PL_op->op_private & (OPpFT_STACKED|OPpFT_AFTER_t)) |
| == OPpFT_STACKED) { |
| if (PL_laststype != OP_LSTAT) |
| Perl_croak(aTHX_ no_prev_lstat); |
| return PL_laststatval; |
| } |
| |
| PL_laststype = OP_LSTAT; |
| PL_statgv = NULL; |
| file = SvPV_flags_const_nolen(sv, flags); |
| sv_setpv(PL_statname,file); |
| PL_laststatval = PerlLIO_lstat(file,&PL_statcache); |
| if (PL_laststatval < 0 && ckWARN(WARN_NEWLINE) && strchr(file, '\n')) |
| Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "lstat"); |
| return PL_laststatval; |
| } |
| |
| static void |
| S_exec_failed(pTHX_ const char *cmd, int fd, int do_report) |
| { |
| const int e = errno; |
| PERL_ARGS_ASSERT_EXEC_FAILED; |
| if (ckWARN(WARN_EXEC)) |
| Perl_warner(aTHX_ packWARN(WARN_EXEC), "Can't exec \"%s\": %s", |
| cmd, Strerror(e)); |
| if (do_report) { |
| PerlLIO_write(fd, (void*)&e, sizeof(int)); |
| PerlLIO_close(fd); |
| } |
| } |
| |
| bool |
| Perl_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp, |
| int fd, int do_report) |
| { |
| dVAR; |
| PERL_ARGS_ASSERT_DO_AEXEC5; |
| #if defined(__SYMBIAN32__) || defined(__LIBCATAMOUNT__) |
| Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system"); |
| #else |
| if (sp > mark) { |
| const char **a; |
| const char *tmps = NULL; |
| Newx(PL_Argv, sp - mark + 1, const char*); |
| a = PL_Argv; |
| |
| while (++mark <= sp) { |
| if (*mark) |
| *a++ = SvPV_nolen_const(*mark); |
| else |
| *a++ = ""; |
| } |
| *a = NULL; |
| if (really) |
| tmps = SvPV_nolen_const(really); |
| 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 |
| S_exec_failed(aTHX_ (really ? tmps : PL_Argv[0]), fd, do_report); |
| } |
| do_execfree(); |
| #endif |
| return FALSE; |
| } |
| |
| void |
| Perl_do_execfree(pTHX) |
| { |
| dVAR; |
| Safefree(PL_Argv); |
| PL_Argv = NULL; |
| Safefree(PL_Cmd); |
| PL_Cmd = NULL; |
| } |
| |
| #ifdef PERL_DEFAULT_DO_EXEC3_IMPLEMENTATION |
| |
| bool |
| Perl_do_exec3(pTHX_ const char *incmd, int fd, int do_report) |
| { |
| dVAR; |
| register const char **a; |
| register char *s; |
| char *buf; |
| char *cmd; |
| /* Make a copy so we can change it */ |
| const Size_t cmdlen = strlen(incmd) + 1; |
| |
| PERL_ARGS_ASSERT_DO_EXEC3; |
| |
| Newx(buf, cmdlen, char); |
| cmd = buf; |
| memcpy(cmd, incmd, cmdlen); |
| |
| 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)) { |
| my_strlcpy(flags, "-c", PERL_FLAGS_MAX); |
| s = cmd+PL_cshlen+3; |
| if (*s == 'f') { |
| s++; |
| my_strlcat(flags, "f", PERL_FLAGS_MAX - 2); |
| } |
| if (*s == ' ') |
| s++; |
| if (*s++ == '\'') { |
| char * const 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*)NULL); |
| PERL_FPU_POST_EXEC |
| *s = '\''; |
| S_exec_failed(aTHX_ PL_cshname, fd, do_report); |
| Safefree(buf); |
| 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; |
| |
| s = cmd; |
| while (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]))) |
| { |
| const 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 *)NULL); |
| PERL_FPU_POST_EXEC |
| S_exec_failed(aTHX_ PL_sh_path, fd, do_report); |
| Safefree(buf); |
| return FALSE; |
| } |
| } |
| |
| Newx(PL_Argv, (s - cmd) / 2 + 2, const char*); |
| PL_Cmd = savepvn(cmd, s-cmd); |
| a = PL_Argv; |
| for (s = PL_Cmd; *s;) { |
| while (isSPACE(*s)) |
| s++; |
| if (*s) |
| *(a++) = s; |
| while (*s && !isSPACE(*s)) |
| s++; |
| if (*s) |
| *s++ = '\0'; |
| } |
| *a = NULL; |
| if (PL_Argv[0]) { |
| PERL_FPU_PRE_EXEC |
| PerlProc_execvp(PL_Argv[0],EXEC_ARGV_CAST(PL_Argv)); |
| PERL_FPU_POST_EXEC |
| if (errno == ENOEXEC) { /* for system V NIH syndrome */ |
| do_execfree(); |
| goto doshell; |
| } |
| S_exec_failed(aTHX_ PL_Argv[0], fd, do_report); |
| } |
| do_execfree(); |
| Safefree(buf); |
| return FALSE; |
| } |
| |
| #endif /* OS2 || WIN32 */ |
| |
| I32 |
| Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp) |
| { |
| dVAR; |
| register I32 val; |
| register I32 tot = 0; |
| const char *const what = PL_op_name[type]; |
| const char *s; |
| STRLEN len; |
| SV ** const oldmark = mark; |
| |
| PERL_ARGS_ASSERT_APPLY; |
| |
| /* Doing this ahead of the switch statement preserves the old behaviour, |
| where attempting to use kill as a taint test test would fail on |
| platforms where kill was not defined. */ |
| #ifndef HAS_KILL |
| if (type == OP_KILL) |
| Perl_die(aTHX_ PL_no_func, what); |
| #endif |
| #ifndef HAS_CHOWN |
| if (type == OP_CHOWN) |
| Perl_die(aTHX_ PL_no_func, what); |
| #endif |
| |
| |
| #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: |
| APPLY_TAINT_PROPER(); |
| if (++mark <= sp) { |
| val = SvIV(*mark); |
| APPLY_TAINT_PROPER(); |
| tot = sp - mark; |
| while (++mark <= sp) { |
| GV* gv; |
| if ((gv = MAYBE_DEREF_GV(*mark))) { |
| if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
| #ifdef HAS_FCHMOD |
| APPLY_TAINT_PROPER(); |
| if (fchmod(PerlIO_fileno(IoIFP(GvIOn(gv))), val)) |
| tot--; |
| #else |
| Perl_die(aTHX_ PL_no_func, "fchmod"); |
| #endif |
| } |
| else { |
| tot--; |
| } |
| } |
| else { |
| const char *name = SvPV_nomg_const_nolen(*mark); |
| APPLY_TAINT_PROPER(); |
| if (PerlLIO_chmod(name, val)) |
| tot--; |
| } |
| } |
| } |
| break; |
| #ifdef HAS_CHOWN |
| case OP_CHOWN: |
| APPLY_TAINT_PROPER(); |
| if (sp - mark > 2) { |
| register I32 val2; |
| val = SvIVx(*++mark); |
| val2 = SvIVx(*++mark); |
| APPLY_TAINT_PROPER(); |
| tot = sp - mark; |
| while (++mark <= sp) { |
| GV* gv; |
| if ((gv = MAYBE_DEREF_GV(*mark))) { |
| if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
| #ifdef HAS_FCHOWN |
| APPLY_TAINT_PROPER(); |
| if (fchown(PerlIO_fileno(IoIFP(GvIOn(gv))), val, val2)) |
| tot--; |
| #else |
| Perl_die(aTHX_ PL_no_func, "fchown"); |
| #endif |
| } |
| else { |
| tot--; |
| } |
| } |
| else { |
| const char *name = SvPV_nomg_const_nolen(*mark); |
| 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: |
| APPLY_TAINT_PROPER(); |
| if (mark == sp) |
| break; |
| s = SvPVx_const(*++mark, len); |
| if (isALPHA(*s)) { |
| if (*s == 'S' && s[1] == 'I' && s[2] == 'G') { |
| s += 3; |
| len -= 3; |
| } |
| if ((val = whichsig_pvn(s, len)) < 0) |
| Perl_croak(aTHX_ "Unrecognized signal name \"%"SVf"\"", SVfARG(*mark)); |
| } |
| else |
| val = SvIV(*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; |
| register unsigned long int __vmssts; |
| SvGETMAGIC(*mark); |
| if (!(SvIOK(*mark) || SvNOK(*mark) || looks_like_number(*mark))) |
| Perl_croak(aTHX_ "Can't kill a non-numeric process ID"); |
| proc = SvIV_nomg(*mark); |
| 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); |
| } |
| } |
| } |
| PERL_ASYNC_CHECK(); |
| break; |
| } |
| #endif |
| if (val < 0) { |
| val = -val; |
| while (++mark <= sp) { |
| I32 proc; |
| SvGETMAGIC(*mark); |
| if (!(SvIOK(*mark) || SvNOK(*mark) || looks_like_number(*mark))) |
| Perl_croak(aTHX_ "Can't kill a non-numeric process ID"); |
| proc = SvIV_nomg(*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; |
| SvGETMAGIC(*mark); |
| if (!(SvIOK(*mark) || SvNOK(*mark) || looks_like_number(*mark))) |
| Perl_croak(aTHX_ "Can't kill a non-numeric process ID"); |
| proc = SvIV_nomg(*mark); |
| APPLY_TAINT_PROPER(); |
| if (PerlProc_kill(proc, val)) |
| tot--; |
| } |
| } |
| PERL_ASYNC_CHECK(); |
| break; |
| #endif |
| case OP_UNLINK: |
| APPLY_TAINT_PROPER(); |
| tot = sp - mark; |
| while (++mark <= sp) { |
| s = SvPV_nolen_const(*mark); |
| APPLY_TAINT_PROPER(); |
| if (PerlProc_geteuid() || 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; |
| #if defined(HAS_UTIME) || defined(HAS_FUTIMES) |
| case OP_UTIME: |
| APPLY_TAINT_PROPER(); |
| if (sp - mark > 2) { |
| #if defined(HAS_FUTIMES) |
| struct timeval utbuf[2]; |
| void *utbufp = utbuf; |
| #elif defined(I_UTIME) || defined(VMS) |
| struct utimbuf utbuf; |
| struct utimbuf *utbufp = &utbuf; |
| #else |
| struct { |
| Time_t actime; |
| Time_t modtime; |
| } utbuf; |
| void *utbufp = &utbuf; |
| #endif |
| |
| SV* const accessed = *++mark; |
| SV* const modified = *++mark; |
| |
| /* 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 HAS_FUTIMES |
| utbuf[0].tv_sec = (long)SvIV(accessed); /* time accessed */ |
| utbuf[0].tv_usec = 0; |
| utbuf[1].tv_sec = (long)SvIV(modified); /* time modified */ |
| utbuf[1].tv_usec = 0; |
| #elif defined(BIG_TIME) |
| utbuf.actime = (Time_t)SvNV(accessed); /* time accessed */ |
| utbuf.modtime = (Time_t)SvNV(modified); /* time modified */ |
| #else |
| utbuf.actime = (Time_t)SvIV(accessed); /* time accessed */ |
| utbuf.modtime = (Time_t)SvIV(modified); /* time modified */ |
| #endif |
| } |
| APPLY_TAINT_PROPER(); |
| tot = sp - mark; |
| while (++mark <= sp) { |
| GV* gv; |
| if ((gv = MAYBE_DEREF_GV(*mark))) { |
| if (GvIO(gv) && IoIFP(GvIOp(gv))) { |
| #ifdef HAS_FUTIMES |
| APPLY_TAINT_PROPER(); |
| if (futimes(PerlIO_fileno(IoIFP(GvIOn(gv))), |
| (struct timeval *) utbufp)) |
| tot--; |
| #else |
| Perl_die(aTHX_ PL_no_func, "futimes"); |
| #endif |
| } |
| else { |
| tot--; |
| } |
| } |
| else { |
| const char * const name = SvPV_nomg_const_nolen(*mark); |
| APPLY_TAINT_PROPER(); |
| #ifdef HAS_FUTIMES |
| if (utimes(name, (struct timeval *)utbufp)) |
| #else |
| if (PerlLIO_utime(name, utbufp)) |
| #endif |
| 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, bool effective, register const Stat_t *statbufp) |
| /* effective is a flag, true for EUID, or for checking if the effective gid |
| * is in the list of groups returned from getgroups(). |
| */ |
| { |
| dVAR; |
| |
| PERL_ARGS_ASSERT_CANDO; |
| |
| #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 Microsoft 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 */ |
| # ifdef __CYGWIN__ |
| if (ingroup(544,effective)) { /* member of Administrators */ |
| # else |
| if ((effective ? PerlProc_geteuid() : PerlProc_getuid()) == 0) { /* root is special */ |
| # endif |
| 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 ? PerlProc_geteuid() : PerlProc_getuid()) ) { |
| 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 */ |
| |
| static bool |
| S_ingroup(pTHX_ Gid_t testgid, bool effective) |
| { |
| dVAR; |
| if (testgid == (effective ? PerlProc_getegid() : PerlProc_getgid())) |
| return TRUE; |
| #ifdef HAS_GETGROUPS |
| { |
| Groups_t *gary = NULL; |
| I32 anum; |
| bool rc = FALSE; |
| |
| anum = getgroups(0, gary); |
| Newx(gary, anum, Groups_t); |
| anum = getgroups(anum, gary); |
| while (--anum >= 0) |
| if (gary[anum] == testgid) { |
| rc = TRUE; |
| break; |
| } |
| |
| Safefree(gary); |
| return rc; |
| } |
| #else |
| return FALSE; |
| #endif |
| } |
| |
| #if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM) |
| |
| I32 |
| Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp) |
| { |
| dVAR; |
| const key_t key = (key_t)SvNVx(*++mark); |
| SV *nsv = optype == OP_MSGGET ? NULL : *++mark; |
| const I32 flags = SvIVx(*++mark); |
| |
| PERL_ARGS_ASSERT_DO_IPCGET; |
| PERL_UNUSED_ARG(sp); |
| |
| 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, (int) SvIV(nsv), flags); |
| #endif |
| #ifdef HAS_SHM |
| case OP_SHMGET: |
| return shmget(key, (size_t) SvUV(nsv), flags); |
| #endif |
| #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
| default: |
| /* diag_listed_as: msg%s not implemented */ |
| 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) |
| { |
| dVAR; |
| char *a; |
| I32 ret = -1; |
| const I32 id = SvIVx(*++mark); |
| #ifdef Semctl |
| const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0; |
| #endif |
| const I32 cmd = SvIVx(*++mark); |
| SV * const astr = *++mark; |
| STRLEN infosize = 0; |
| I32 getinfo = (cmd == IPC_STAT); |
| |
| PERL_ARGS_ASSERT_DO_IPCCTL; |
| PERL_UNUSED_ARG(sp); |
| |
| 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 |
| /* diag_listed_as: sem%s not implemented */ |
| Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
| #endif |
| break; |
| #endif |
| #if !defined(HAS_MSG) || !defined(HAS_SEM) || !defined(HAS_SHM) |
| default: |
| /* diag_listed_as: shm%s not implemented */ |
| Perl_croak(aTHX_ "%s not implemented", PL_op_desc[optype]); |
| #endif |
| } |
| |
| if (infosize) |
| { |
| if (getinfo) |
| { |
| SvPV_force_nolen(astr); |
| a = SvGROW(astr, infosize+1); |
| } |
| else |
| { |
| STRLEN len; |
| 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 |
| { |
| const 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 |
| /* diag_listed_as: sem%s not implemented */ |
| 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) |
| { |
| dVAR; |
| #ifdef HAS_MSG |
| STRLEN len; |
| const I32 id = SvIVx(*++mark); |
| SV * const mstr = *++mark; |
| const I32 flags = SvIVx(*++mark); |
| const char * const mbuf = SvPV_const(mstr, len); |
| const I32 msize = len - sizeof(long); |
| |
| PERL_ARGS_ASSERT_DO_MSGSND; |
| PERL_UNUSED_ARG(sp); |
| |
| if (msize < 0) |
| Perl_croak(aTHX_ "Arg too short for msgsnd"); |
| SETERRNO(0,0); |
| return msgsnd(id, (struct msgbuf *)mbuf, msize, flags); |
| #else |
| PERL_UNUSED_ARG(sp); |
| PERL_UNUSED_ARG(mark); |
| /* diag_listed_as: msg%s not implemented */ |
| Perl_croak(aTHX_ "msgsnd not implemented"); |
| #endif |
| } |
| |
| I32 |
| Perl_do_msgrcv(pTHX_ SV **mark, SV **sp) |
| { |
| #ifdef HAS_MSG |
| dVAR; |
| char *mbuf; |
| long mtype; |
| I32 msize, flags, ret; |
| const I32 id = SvIVx(*++mark); |
| SV * const mstr = *++mark; |
| |
| PERL_ARGS_ASSERT_DO_MSGRCV; |
| PERL_UNUSED_ARG(sp); |
| |
| /* suppress warning when reading into undef var --jhi */ |
| if (! SvOK(mstr)) |
| sv_setpvs(mstr, ""); |
| msize = SvIVx(*++mark); |
| mtype = (long)SvIVx(*++mark); |
| flags = SvIVx(*++mark); |
| SvPV_force_nolen(mstr); |
| 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_UNUSED_ARG(sp); |
| PERL_UNUSED_ARG(mark); |
| /* diag_listed_as: msg%s not implemented */ |
| Perl_croak(aTHX_ "msgrcv not implemented"); |
| #endif |
| } |
| |
| I32 |
| Perl_do_semop(pTHX_ SV **mark, SV **sp) |
| { |
| #ifdef HAS_SEM |
| dVAR; |
| STRLEN opsize; |
| const I32 id = SvIVx(*++mark); |
| SV * const opstr = *++mark; |
| const char * const opbuf = SvPV_const(opstr, opsize); |
| |
| PERL_ARGS_ASSERT_DO_SEMOP; |
| PERL_UNUSED_ARG(sp); |
| |
| 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). */ |
| { |
| const int nsops = opsize / (3 * sizeof (short)); |
| int i = nsops; |
| short * const ops = (short *) opbuf; |
| short *o = ops; |
| struct sembuf *temps, *t; |
| I32 result; |
| |
| Newx (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 |
| /* diag_listed_as: sem%s not implemented */ |
| Perl_croak(aTHX_ "semop not implemented"); |
| #endif |
| } |
| |
| I32 |
| Perl_do_shmio(pTHX_ I32 optype, SV **mark, SV **sp) |
| { |
| #ifdef HAS_SHM |
| dVAR; |
| char *shm; |
| struct shmid_ds shmds; |
| const I32 id = SvIVx(*++mark); |
| SV * const mstr = *++mark; |
| const I32 mpos = SvIVx(*++mark); |
| const I32 msize = SvIVx(*++mark); |
| |
| PERL_ARGS_ASSERT_DO_SHMIO; |
| PERL_UNUSED_ARG(sp); |
| |
| SETERRNO(0,0); |
| if (shmctl(id, IPC_STAT, &shmds) == -1) |
| return -1; |
| if (mpos < 0 || msize < 0 |
| || (size_t)mpos + msize > (size_t)shmds.shm_segsz) { |
| SETERRNO(EFAULT,SS_ACCVIO); /* can't do as caller requested */ |
| return -1; |
| } |
| shm = (char *)shmat(id, 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) { |
| char *mbuf; |
| /* suppress warning when reading into undef var (tchrist 3/Mar/00) */ |
| if (! SvOK(mstr)) |
| sv_setpvs(mstr, ""); |
| SvUPGRADE(mstr, SVt_PV); |
| SvPOK_only(mstr); |
| mbuf = SvGROW(mstr, (STRLEN)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 { |
| STRLEN len; |
| |
| const char *mbuf = SvPV_const(mstr, len); |
| const I32 n = ((I32)len > msize) ? msize : (I32)len; |
| Copy(mbuf, shm + mpos, n, char); |
| if (n < msize) |
| memzero(shm + mpos + n, msize - n); |
| } |
| return shmdt(shm); |
| #else |
| /* diag_listed_as: shm%s not implemented */ |
| 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) |
| { |
| dVAR; |
| SV * const tmpcmd = newSV(0); |
| PerlIO *fp; |
| |
| PERL_ARGS_ASSERT_START_GLOB; |
| |
| 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 */ |
| |
| PerlIO * |
| Perl_vms_start_glob |
| (pTHX_ SV *tmpglob, |
| IO *io); |
| |
| fp = Perl_vms_start_glob(aTHX_ tmpglob, io); |
| |
| #else /* !VMS */ |
| #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 */ |
| { |
| GV * const envgv = gv_fetchpvs("ENV", 0, SVt_PVHV); |
| SV ** const home = hv_fetchs(GvHV(envgv), "HOME", 0); |
| SV ** const path = hv_fetchs(GvHV(envgv), "PATH", 0); |
| if (home && *home) SvGETMAGIC(*home); |
| if (path && *path) SvGETMAGIC(*path); |
| save_hash(gv_fetchpvs("ENV", 0, SVt_PVHV)); |
| if (home && *home) SvSETMAGIC(*home); |
| if (path && *path) SvSETMAGIC(*path); |
| } |
| (void)do_open(PL_last_in_gv, (char*)SvPVX_const(tmpcmd), SvCUR(tmpcmd), |
| FALSE, O_RDONLY, 0, NULL); |
| fp = IoIFP(io); |
| #endif /* !VMS */ |
| LEAVE; |
| return fp; |
| } |
| |
| /* |
| * Local variables: |
| * c-indentation-style: bsd |
| * c-basic-offset: 4 |
| * indent-tabs-mode: t |
| * End: |
| * |
| * ex: set ts=8 sts=4 sw=4 noet: |
| */ |