/* doio.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, by Larry Wall and others
+ * 2000, 2001, 2002, 2003, 2004, 2005, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
* chattering, into calmer and more level reaches."
*/
+/* 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"
# define OPEN_EXCL 0
#endif
-#if !defined(NSIG) || defined(M_UNIX) || defined(__unix) || defined(M_XENIX)
+#define PERL_MODE_MAX 8
+#define PERL_FLAGS_MAX 10
+
#include <signal.h>
-#endif
bool
Perl_do_open(pTHX_ GV *gv, register char *name, I32 len, int as_raw,
int rawmode, int rawperm, PerlIO *supplied_fp, SV *svs,
I32 num_svs)
{
+ (void)num_svs;
return do_openn(gv, name, len, as_raw, rawmode, rawperm,
supplied_fp, &svs, 1);
}
bool was_fdopen = FALSE;
bool in_raw = 0, in_crlf = 0, out_raw = 0, out_crlf = 0;
char *type = NULL;
- char mode[8]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
+ char mode[PERL_MODE_MAX]; /* stdio file mode ("r\0", "rb\0", "r+b\0" etc.) */
SV *namesv;
Zero(mode,sizeof(mode),char);
if (as_raw) {
/* sysopen style args, i.e. integer mode and permissions */
STRLEN ix = 0;
- int appendtrunc =
+ const int appendtrunc =
0
#ifdef O_APPEND /* Not fully portable. */
|O_APPEND
|O_TRUNC
#endif
;
- int modifyingmode =
- O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
+ const int modifyingmode = O_WRONLY|O_RDWR|O_CREAT|appendtrunc;
int ismodifying;
if (num_svs != 0) {
errno = EPIPE;
goto say_false;
}
- if (strNE(name,"-") || num_svs)
+ if ((*name == '-' && name[1] == '\0') || num_svs)
TAINT_ENV();
TAINT_PROPER("piped open");
if (!num_svs && name[len-1] == '|') {
}
mode[0] = 'w';
writing = 1;
+#ifdef HAS_STRLCAT
+ if (out_raw)
+ strlcat(mode, "b", PERL_MODE_MAX);
+ else if (out_crlf)
+ strlcat(mode, "t", PERL_MODE_MAX);
+#else
if (out_raw)
strcat(mode, "b");
else if (out_crlf)
strcat(mode, "t");
+#endif
if (num_svs > 1) {
fp = PerlProc_popen_list(mode, num_svs, svp);
}
}
writing = 1;
+#ifdef HAS_STRLCAT
+ if (out_raw)
+ strlcat(mode, "b", PERL_MODE_MAX);
+ else if (out_crlf)
+ strlcat(mode, "t", PERL_MODE_MAX);
+#else
if (out_raw)
strcat(mode, "b");
else if (out_crlf)
strcat(mode, "t");
-
+#endif
if (*type == '&') {
duplicity:
dodup = PERLIO_DUP_FD;
fd = atoi(type);
}
else {
- IO* thatio;
+ const IO* thatio;
if (num_svs) {
thatio = sv_2io(*svp);
}
/*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;
}
errno = EPIPE;
goto say_false;
}
- if (strNE(name,"-") || num_svs)
+ 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);
}
/*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");
- if (strEQ(name,"-")) {
+#endif
+
+ if (*name == '-' && name[1] == '\0') {
fp = PerlIO_stdin();
IoTYPE(io) = IoTYPE_STD;
}
if (PL_filemode & (S_ISUID|S_ISGID)) {
PerlIO_flush(IoIFP(GvIOn(PL_argvoutgv))); /* chmod must follow last write */
#ifdef HAS_FCHMOD
- (void)fchmod(PL_lastfd,PL_filemode);
+ 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;
retval = TRUE;
else {
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) { /* a socket */
- retval = (PerlIO_close(IoOFP(io)) != EOF);
+ 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
- retval = (PerlIO_close(IoIFP(io)) != EOF);
+ else {
+ bool prev_err = PerlIO_error(IoIFP(io));
+ retval = (PerlIO_close(IoIFP(io)) != EOF && !prev_err);
+ }
}
IoOFP(io) = IoIFP(io) = Nullfp;
}
if (*s == ':') {
switch (s[1]) {
case 'r':
- if (len > 3 && strnEQ(s+1, "raw", 3)
+ if (s[2] == 'a' && s[3] == 'w'
&& (!s[4] || s[4] == ':' || isSPACE(s[4])))
{
mode = O_BINARY;
}
/* FALL THROUGH */
case 'c':
- if (len > 4 && strnEQ(s+1, "crlf", 4)
+ if (s[2] == 'r' && s[3] == 'l' && s[4] == 'f'
&& (!s[5] || s[5] == ':' || isSPACE(s[5])))
{
mode = O_TEXT;
#ifndef PERLIO_LAYERS
Perl_croak(aTHX_ "IO layers (like '%.*s') unavailable", end-s, s);
#else
+ len -= end-s;
s = end;
#endif
}
/* 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.
*/
- char *name = ":raw";
+ const char *name = ":raw";
#ifdef PERLIO_USING_CRLF
if (!(mode & O_BINARY))
name = ":crlf";
return PerlIO_binmode(aTHX_ fp, iotype, mode, name);
}
-#if !defined(HAS_TRUNCATE) && !defined(HAS_CHSIZE) && defined(F_FREESP)
- /* code courtesy of William Kucharski */
-#define HAS_CHSIZE
-
+#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;
}
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 char *tmps;
+ register const char *tmps;
STRLEN len;
/* assuming fp is checked earlier */
switch (SvTYPE(sv)) {
case SVt_NULL:
if (ckWARN(WARN_UNINITIALIZED))
- report_uninit();
+ report_uninit(sv);
return TRUE;
case SVt_IV:
if (SvIOK(sv)) {
return (PL_laststatval = -1);
}
}
+ else if (PL_op->op_private & OPpFT_STACKED) {
+ return PL_laststatval;
+ }
else {
SV* sv = POPs;
char *s;
}
}
+static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
+
I32
Perl_my_lstat(pTHX)
{
EXTEND(SP,1);
if (cGVOP_gv == PL_defgv) {
if (PL_laststype != OP_LSTAT)
- Perl_croak(aTHX_ "The stat preceding -l _ wasn't an lstat");
+ Perl_croak(aTHX_ no_prev_lstat);
return PL_laststatval;
}
if (ckWARN(WARN_IO)) {
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;
Perl_croak(aTHX_ "exec? I'm not *that* kind of operating system");
#else
register char **a;
- char *tmps = Nullch;
+ const char *tmps = Nullch;
STRLEN n_a;
if (sp > mark) {
#ifdef CSH
{
- char flags[10];
+ 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++;
&& s > cmd + 1 && s[-1] == '2' && isSPACE(s[-2])
&& (!s[3] || isSPACE(s[3])))
{
- char *t = s + 3;
+ const char *t = s + 3;
while (*t && isSPACE(*t))
++t;
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) {
+ int e = errno;
PerlLIO_write(fd, (void*)&e, sizeof(int));
PerlLIO_close(fd);
}
Perl_apply(pTHX_ I32 type, register SV **mark, register SV **sp)
{
register I32 val;
- register I32 val2;
register I32 tot = 0;
- char *what;
+ const char *what;
char *s;
SV **oldmark = mark;
STRLEN n_a;
what = "chown";
APPLY_TAINT_PROPER();
if (sp - mark > 2) {
+ register I32 val2;
val = SvIVx(*++mark);
val2 = SvIVx(*++mark);
APPLY_TAINT_PROPER();
I32
Perl_do_ipcget(pTHX_ I32 optype, SV **mark, SV **sp)
{
- key_t key;
- I32 n, flags;
+ key_t key = (key_t)SvNVx(*++mark);
+ const I32 n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
+ const I32 flags = SvIVx(*++mark);
+ (void)sp;
- key = (key_t)SvNVx(*++mark);
- n = (optype == OP_MSGGET) ? 0 : SvIVx(*++mark);
- flags = SvIVx(*++mark);
SETERRNO(0,0);
switch (optype)
{
{
SV *astr;
char *a;
- I32 id, n, cmd, infosize, getinfo;
+ I32 infosize, getinfo;
I32 ret = -1;
+ const I32 id = SvIVx(*++mark);
+ const I32 n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
+ const I32 cmd = SvIVx(*++mark);
+ (void)sp;
- id = SvIVx(*++mark);
- n = (optype == OP_SEMCTL) ? SvIVx(*++mark) : 0;
- cmd = SvIVx(*++mark);
astr = *++mark;
infosize = 0;
getinfo = (cmd == IPC_STAT);
#ifdef HAS_MSG
SV *mstr;
char *mbuf;
- I32 id, msize, flags;
+ I32 msize, flags;
STRLEN len;
+ const I32 id = SvIVx(*++mark);
+ (void)sp;
- id = SvIVx(*++mark);
mstr = *++mark;
flags = SvIVx(*++mark);
mbuf = SvPV(mstr, len);
SV *mstr;
char *mbuf;
long mtype;
- I32 id, msize, flags, ret;
+ I32 msize, flags, ret;
STRLEN len;
+ const I32 id = SvIVx(*++mark);
+ (void)sp;
- id = SvIVx(*++mark);
mstr = *++mark;
/* suppress warning when reading into undef var --jhi */
if (! SvOK(mstr))
#ifdef HAS_SEM
SV *opstr;
char *opbuf;
- I32 id;
STRLEN opsize;
+ const I32 id = SvIVx(*++mark);
+ (void)sp;
- id = SvIVx(*++mark);
opstr = *++mark;
opbuf = SvPV(opstr, opsize);
if (opsize < 3 * SHORTSIZE
SETERRNO(0,0);
/* We can't assume that sizeof(struct sembuf) == 3 * sizeof(short). */
{
- int nsops = opsize / (3 * sizeof (short));
+ const int nsops = opsize / (3 * sizeof (short));
int i = nsops;
short *ops = (short *) opbuf;
short *o = ops;
#ifdef HAS_SHM
SV *mstr;
char *mbuf, *shm;
- I32 id, mpos, msize;
+ I32 mpos, msize;
STRLEN len;
struct shmid_ds shmds;
+ const I32 id = SvIVx(*++mark);
+ (void)sp;
- id = SvIVx(*++mark);
mstr = *++mark;
mpos = SvIVx(*++mark);
msize = SvIVx(*++mark);
projects / p5sagit/p5-mst-13.2.git / blobdiff