/* doio.c
*
* Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2003, 2004, 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
+#define PERL_MODE_MAX 8
+#define PERL_FLAGS_MAX 10
+
#include <signal.h>
bool
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);
}
int rawmode, int rawperm, PerlIO *supplied_fp, SV **svp,
I32 num_svs)
{
+ dVAR;
register IO *io = GvIOn(gv);
PerlIO *saveifp = Nullfp;
PerlIO *saveofp = Nullfp;
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) {
if (num_svs) {
/* New style explicit name, type is just mode and layer info */
- STRLEN l = 0;
#ifdef USE_STDIO
if (SvROK(*svp) && !strchr(name,'&')) {
if (ckWARN(WARN_IO))
goto say_false;
}
#endif /* USE_STDIO */
- name = SvOK(*svp) ? SvPV(*svp, l) : "";
- len = (I32)l;
- name = savepvn(name, len);
+ name = SvOK(*svp) ? savesvpv (*svp) : savepvn ("", 0);
SAVEFREEPV(name);
}
else {
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;
}
sv = *av_fetch(PL_fdpid,fd,TRUE);
(void)SvUPGRADE(sv, SVt_IV);
pid = SvIVX(sv);
- SvIVX(sv) = 0;
+ SvIV_set(sv, 0);
sv = *av_fetch(PL_fdpid,savefd,TRUE);
(void)SvUPGRADE(sv, SVt_IV);
- SvIVX(sv) = pid;
+ SvIV_set(sv, pid);
UNLOCK_FDPID_MUTEX;
}
#endif
sv_catpv(sv,PL_inplace);
}
#ifndef FLEXFILENAMES
- if ((PerlLIO_stat(SvPVX(sv),&PL_statbuf) >= 0
+ if ((PerlLIO_stat(SvPVX_const(sv),&PL_statbuf) >= 0
&& PL_statbuf.st_dev == filedev
&& PL_statbuf.st_ino == fileino)
#ifdef DJGPP
#endif
#ifdef HAS_RENAME
#if !defined(DOSISH) && !defined(__CYGWIN__) && !defined(EPOC)
- if (PerlLIO_rename(PL_oldname,SvPVX(sv)) < 0) {
+ if (PerlLIO_rename(PL_oldname,SvPVX_const(sv)) < 0) {
if (ckWARN_d(WARN_INPLACE))
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
"Can't rename %s to %"SVf": %s, skipping file",
}
#else
do_close(gv,FALSE);
- (void)PerlLIO_unlink(SvPVX(sv));
- (void)PerlLIO_rename(PL_oldname,SvPVX(sv));
+ (void)PerlLIO_unlink(SvPVX_const(sv));
+ (void)PerlLIO_rename(PL_oldname,SvPVX_const(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) {
+ (void)UNLINK(SvPVX_const(sv));
+ if (link(PL_oldname,SvPVX_const(sv)) < 0) {
if (ckWARN_d(WARN_INPLACE))
Perl_warner(aTHX_ packWARN(WARN_INPLACE),
"Can't rename %s to %"SVf": %s, skipping file",
}
else {
if (ckWARN_d(WARN_INPLACE)) {
- int eno = errno;
+ const int eno = errno;
if (PerlLIO_stat(PL_oldname, &PL_statbuf) >= 0
&& !S_ISREG(PL_statbuf.st_mode))
{
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));
+ const int status = PerlProc_pclose(IoIFP(io));
if (not_implicit) {
STATUS_NATIVE_SET(status);
- retval = (STATUS_POSIX == 0);
+ retval = (STATUS_UNIX == 0);
}
else {
retval = (status != -1);
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;
}
int mode = O_BINARY;
if (discp) {
STRLEN len;
- char *s = SvPV(discp,len);
+ const char *s = SvPV(discp,len);
while (*s) {
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;
--len;
}
else {
- char *end;
+ const char *end;
fail_discipline:
end = strchr(s+1, ':');
if (!end)
#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)
+#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
-I32 my_chsize(fd, length)
-I32 fd; /* file descriptor */
-Off_t length; /* length to set file to */
-{
struct flock fl;
Stat_t filebuf;
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)
{
- 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)) {
io = GvIO(gv);
if (io && IoIFP(io)) {
PL_statgv = gv;
- sv_setpv(PL_statname,"");
+ sv_setpvn(PL_statname,"", 0);
PL_laststype = OP_STAT;
return (PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache));
}
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
PL_statgv = Nullgv;
- sv_setpv(PL_statname,"");
+ sv_setpvn(PL_statname,"", 0);
return (PL_laststatval = -1);
}
}
}
else {
SV* sv = POPs;
- char *s;
+ const char *s;
STRLEN len;
PUTBACK;
if (SvTYPE(sv) == SVt_PVGV) {
s = SvPV(sv, len);
PL_statgv = Nullgv;
sv_setpvn(PL_statname, s, len);
- s = SvPVX(PL_statname); /* s now NUL-terminated */
+ 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'))
}
}
-static char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
+static const char no_prev_lstat[] = "The stat preceding -l _ wasn't an lstat";
I32
Perl_my_lstat(pTHX)
GvENAME((GV*) SvRV(sv)));
return (PL_laststatval = -1);
}
+ /* XXX Do really need to be calling SvPV() all these times? */
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_do_aexec5(pTHX_ SV *really, register SV **mark, register SV **sp,
int fd, int do_report)
{
-#ifdef MACOS_TRADITIONAL
+ dVAR;
+#if defined(MACOS_TRADITIONAL) || defined(SYMBIAN)
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) {
}
}
-#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(MACOS_TRADITIONAL)
+#if !defined(OS2) && !defined(WIN32) && !defined(DJGPP) && !defined(EPOC) && !defined(SYMBIAN) && !defined(MACOS_TRADITIONAL)
bool
Perl_do_exec(pTHX_ char *cmd)
bool
Perl_do_exec3(pTHX_ char *cmd, int fd, int do_report)
{
+ dVAR;
register char **a;
register char *s;
#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;
APPLY_TAINT_PROPER();
tot = sp - mark;
while (++mark <= sp) {
- char *name = SvPVx(*mark, n_a);
+ const char *name = SvPVx(*mark, n_a);
APPLY_TAINT_PROPER();
if (PerlLIO_chmod(name, val))
tot--;
what = "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) {
- char *name = SvPVx(*mark, n_a);
+ const char *name = SvPVx(*mark, n_a);
APPLY_TAINT_PROPER();
if (PerlLIO_chown(name, val, val2))
tot--;
if (sp - mark > 2) {
#if 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* 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
utbuf.modtime = (Time_t)SvIVx(modified); /* time modified */
#endif
}
- APPLY_TAINT_PROPER();
+ APPLY_TAINT_PROPER();
tot = sp - mark;
while (++mark <= sp) {
- char *name = SvPVx(*mark, n_a);
+ STRLEN n_a;
+ const char *name = SvPVx(*mark, n_a);
APPLY_TAINT_PROPER();
- if (PerlLIO_utime(name, utbufp))
+ if (PerlLIO_utime(name, utbufp))
tot--;
}
}
/* 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)
+Perl_cando(pTHX_ Mode_t mode, Uid_t effective, register const 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. */
{
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;
+ char *shm;
+ 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);
if (shm == (char *)-1) /* I hate System V IPC, I really do */
return -1;
if (optype == OP_SHMREAD) {
+ const char *mbuf;
/* suppress warning when reading into undef var (tchrist 3/Mar/00) */
if (! SvOK(mstr))
sv_setpvn(mstr, "", 0);
else {
I32 n;
- mbuf = SvPV(mstr, len);
+ const char *mbuf = SvPV(mstr, len);
if ((n = len) > msize)
n = msize;
Copy(mbuf, shm + mpos, n, char);
PerlIO *
Perl_start_glob (pTHX_ SV *tmpglob, IO *io)
{
+ dVAR;
SV *tmpcmd = NEWSV(55, 0);
PerlIO *fp;
ENTER;
}
if ((tmpfp = PerlIO_tmpfile()) != NULL) {
Stat_t st;
- if (!PerlLIO_stat(SvPVX(tmpglob),&st) && S_ISDIR(st.st_mode))
+ if (!PerlLIO_stat(SvPVX_const(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);
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:
+ */
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