mode[ix++] = '+';
}
}
+#if O_BINARY != 0
+ /* Unless O_BINARY is different from zero, bit-and:ing
+ * with it won't do much good. */
if (rawmode & O_BINARY)
mode[ix++] = 'b';
+# endif
mode[ix] = '\0';
return ptype;
}
}
}
if (PL_perlio_debug_fd > 0) {
- int rc = 0;
#ifdef USE_ITHREADS
const char * const s = CopFILE(PL_curcop);
/* Use fixed buffer as sv_catpvf etc. needs SVs */
char buffer[1024];
const STRLEN len1 = my_snprintf(buffer, sizeof(buffer), "%.40s:%" IVdf " ", s ? s : "(none)", (IV) CopLINE(PL_curcop));
const STRLEN len2 = my_vsnprintf(buffer + len1, sizeof(buffer) - len1, fmt, ap);
- rc = PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2);
+ PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, buffer, len1 + len2));
#else
const char *s = CopFILE(PL_curcop);
STRLEN len;
Perl_sv_vcatpvf(aTHX_ sv, fmt, &ap);
s = SvPV_const(sv, len);
- rc = PerlLIO_write(PL_perlio_debug_fd, s, len);
+ PERL_UNUSED_RESULT(PerlLIO_write(PL_perlio_debug_fd, s, len));
SvREFCNT_dec(sv);
#endif
- /* silently ignore failures */
- PERL_UNUSED_VAR(rc);
}
va_end(ap);
}
{
PerlIOl *head, *p;
int seen = 0;
+#ifndef PERL_IMPLICIT_SYS
+ PERL_UNUSED_CONTEXT;
+#endif
if (!PerlIOValid(f))
return;
p = head = PerlIOBase(f)->head;
PerlIO *
PerlIO_allocate(pTHX)
{
- dVAR;
/*
* Find a free slot in the table, allocating new table as necessary
*/
void
PerlIO_list_push(pTHX_ PerlIO_list_t *list, PerlIO_funcs *funcs, SV *arg)
{
- dVAR;
PerlIO_pair_t *p;
PERL_UNUSED_CONTEXT;
void
PerlIO_destruct(pTHX)
{
- dVAR;
PerlIOl **table = &PL_perlio;
PerlIOl *f;
#ifdef USE_ITHREADS
AV *
PerlIO_get_layers(pTHX_ PerlIO *f)
{
- dVAR;
AV * const av = newAV();
if (PerlIOValid(f)) {
PerlIO_funcs *
PerlIO_find_layer(pTHX_ const char *name, STRLEN len, int load)
{
- dVAR;
+
IV i;
if ((SSize_t) len <= 0)
len = strlen(name);
/* This is used as a %SIG{__WARN__} handler to suppress warnings
during loading of layers.
*/
- dVAR;
dXSARGS;
PERL_UNUSED_ARG(cv);
if (items)
XS(XS_PerlIO__Layer__find); /* prototype to pass -Wmissing-prototypes */
XS(XS_PerlIO__Layer__find)
{
- dVAR;
dXSARGS;
PERL_UNUSED_ARG(cv);
if (items < 2)
void
PerlIO_define_layer(pTHX_ PerlIO_funcs *tab)
{
- dVAR;
if (!PL_known_layers)
PL_known_layers = PerlIO_list_alloc(aTHX);
PerlIO_list_push(aTHX_ PL_known_layers, tab, NULL);
int
PerlIO_parse_layers(pTHX_ PerlIO_list_t *av, const char *names)
{
- dVAR;
if (names) {
const char *s = names;
while (*s) {
void
PerlIO_default_buffer(pTHX_ PerlIO_list_t *av)
{
- dVAR;
PERLIO_FUNCS_DECL(*tab) = &PerlIO_perlio;
#ifdef PERLIO_USING_CRLF
tab = &PerlIO_crlf;
PerlIO_list_t *
PerlIO_default_layers(pTHX)
{
- dVAR;
if (!PL_def_layerlist) {
const char * const s = TAINTING_get ? NULL : PerlEnv_getenv("PERLIO");
PERLIO_FUNCS_DECL(*osLayer) = &PerlIO_unix;
PerlIO_funcs *
PerlIO_default_layer(pTHX_ I32 n)
{
- dVAR;
PerlIO_list_t * const av = PerlIO_default_layers(aTHX);
if (n < 0)
n += av->cur;
void
PerlIO_stdstreams(pTHX)
{
- dVAR;
if (!PL_perlio) {
PerlIO_init_table(aTHX);
PerlIO_fdopen(0, "Ir" PERLIO_STDTEXT);
int
Perl_PerlIO_fileno(pTHX_ PerlIO *f)
{
- dVAR;
- Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f));
+ Perl_PerlIO_or_Base(f, Fileno, fileno, -1, (aTHX_ f));
}
static PerlIO_funcs *
PerlIO_layer_from_ref(pTHX_ SV *sv)
{
- dVAR;
/*
* For any scalar type load the handler which is bundled with perl
*/
PerlIO_resolve_layers(pTHX_ const char *layers,
const char *mode, int narg, SV **args)
{
- dVAR;
PerlIO_list_t *def = PerlIO_default_layers(aTHX);
int incdef = 1;
if (!PL_perlio)
PerlIO_openn(pTHX_ const char *layers, const char *mode, int fd,
int imode, int perm, PerlIO *f, int narg, SV **args)
{
- dVAR;
if (!f && narg == 1 && *args == &PL_sv_undef) {
if ((f = PerlIO_tmpfile())) {
if (!layers || !*layers)
int
Perl_PerlIO_flush(pTHX_ PerlIO *f)
{
- dVAR;
if (f) {
if (*f) {
const PerlIO_funcs *tab = PerlIOBase(f)->tab;
void
PerlIOBase_flush_linebuf(pTHX)
{
- dVAR;
PerlIOl **table = &PL_perlio;
PerlIOl *f;
while ((f = *table)) {
PerlIO_funcs * const self = PerlIOBase(o)->tab;
SV *arg = NULL;
char buf[8];
+ assert(self);
PerlIO_debug("PerlIOBase_dup %s f=%p o=%p param=%p\n",
self ? self->name : "(Null)",
(void*)f, (void*)o, (void*)param);
const int new_max = 16 + (new_fd & ~15);
int *new_array;
+#ifndef PERL_IMPLICIT_SYS
+ PERL_UNUSED_CONTEXT;
+#endif
+
PerlIO_debug("More fds - old=%d, need %d, new=%d\n",
old_max, new_fd, new_max);
void
PerlIO_cleanup(pTHX)
{
- dVAR;
int i;
#ifdef USE_ITHREADS
PerlIO_debug("Cleanup layers for %p\n",(void*)aTHX);
static void
S_lockcnt_dec(pTHX_ const void* f)
{
+#ifndef PERL_IMPLICIT_SYS
+ PERL_UNUSED_CONTEXT;
+#endif
PerlIO_lockcnt((PerlIO*)f)--;
}
oflags |= O_WRONLY;
break;
}
- if (*mode == 'b') {
- oflags |= O_BINARY;
+
+ /* XXX TODO: PerlIO_open() test that exercises 'rb' and 'rt'. */
+
+ /* Unless O_BINARY is different from O_TEXT, first bit-or:ing one
+ * of them in, and then bit-and-masking the other them away, won't
+ * have much of an effect. */
+ switch (*mode) {
+ case 'b':
+#if O_TEXT != O_BINARY
+ oflags |= O_BINARY;
oflags &= ~O_TEXT;
- mode++;
- }
- else if (*mode == 't') {
+#endif
+ mode++;
+ break;
+ case 't':
+#if O_TEXT != O_BINARY
oflags |= O_TEXT;
oflags &= ~O_BINARY;
- mode++;
- }
- else {
-#ifdef PERLIO_USING_CRLF
+#endif
+ mode++;
+ break;
+ default:
+# if O_BINARY != 0
+ /* bit-or:ing with zero O_BINARY would be useless. */
/*
* If neither "t" nor "b" was specified, open the file
* in O_BINARY mode.
+ *
+ * Note that if something else than the zero byte was seen
+ * here (e.g. bogus mode "rx"), just few lines later we will
+ * set the errno and invalidate the flags.
*/
oflags |= O_BINARY;
-#endif
+# endif
+ break;
}
if (*mode || oflags == -1) {
SETERRNO(EINVAL, LIB_INVARG);
SSize_t
PerlIOUnix_read(pTHX_ PerlIO *f, void *vbuf, Size_t count)
{
- dVAR;
int fd;
if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */
return -1;
SSize_t
PerlIOUnix_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count)
{
- dVAR;
int fd;
if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */
return -1;
IV
PerlIOUnix_close(pTHX_ PerlIO *f)
{
- dVAR;
const int fd = PerlIOSelf(f, PerlIOUnix)->fd;
int code = 0;
if (PerlIOBase(f)->flags & PERLIO_F_OPEN) {
PerlIO *f = NULL;
if (stdio) {
PerlIOStdio *s;
+ int fd0 = fileno(stdio);
+ if (fd0 < 0) {
+ return NULL;
+ }
if (!mode || !*mode) {
/* We need to probe to see how we can open the stream
so start with read/write and then try write and read
Note that the errno value set by a failing fdopen
varies between stdio implementations.
*/
- const int fd = PerlLIO_dup(fileno(stdio));
- FILE *f2 = PerlSIO_fdopen(fd, (mode = "r+"));
+ const int fd = PerlLIO_dup(fd0);
+ FILE *f2;
+ if (fd < 0) {
+ return f;
+ }
+ f2 = PerlSIO_fdopen(fd, (mode = "r+"));
if (!f2) {
f2 = PerlSIO_fdopen(fd, (mode = "w"));
}
SSize_t
PerlIOStdio_read(pTHX_ PerlIO *f, void *vbuf, Size_t count)
{
- dVAR;
FILE * s;
SSize_t got = 0;
if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */
}
if ((STDCHAR*)PerlSIO_get_ptr(s) != --eptr || ((*eptr & 0xFF) != ch)) {
/* Did not change pointer as expected */
- fgetc(s); /* get char back again */
- break;
+ if (fgetc(s) != EOF) /* get char back again */
+ break;
}
/* It worked ! */
count--;
SSize_t
PerlIOStdio_write(pTHX_ PerlIO *f, const void *vbuf, Size_t count)
{
- dVAR;
SSize_t got;
if (PerlIO_lockcnt(f)) /* in use: abort ungracefully */
return -1;
FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
if (ptr != NULL) {
#ifdef STDIO_PTR_LVALUE
+ /* This is a long-standing infamous mess. The root of the
+ * problem is that one cannot know the signedness of char, and
+ * more precisely the signedness of FILE._ptr. The following
+ * things have been tried, and they have all failed (across
+ * different compilers (remember that core needs to to build
+ * also with c++) and compiler options:
+ *
+ * - casting the RHS to (void*) -- works in *some* places
+ * - casting the LHS to (void*) -- totally unportable
+ *
+ * So let's try silencing the warning at least for gcc. */
+ GCC_DIAG_IGNORE(-Wpointer-sign);
PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */
+ GCC_DIAG_RESTORE;
#ifdef STDIO_PTR_LVAL_SETS_CNT
assert(PerlSIO_get_cnt(stdio) == (cnt));
#endif
}
#endif
-#if defined(VMS)
- /* An ungetc()d char is handled separately from the regular
- * buffer, so we stuff it in the buffer ourselves.
- * Should never get called as should hit code above
- */
- *(--((*stdio)->_ptr)) = (unsigned char) c;
- (*stdio)->_cnt++;
-#else
/* If buffer snoop scheme above fails fall back to
using ungetc().
*/
if (PerlSIO_ungetc(c, stdio) != c)
return EOF;
-#endif
+
return 0;
}
FILE *stdio = NULL;
if (PerlIOValid(f)) {
char buf[8];
+ int fd = PerlIO_fileno(f);
+ if (fd < 0) {
+ return NULL;
+ }
PerlIO_flush(f);
if (!mode || !*mode) {
mode = PerlIO_modestr(f, buf);
void
PerlIO_releaseFILE(PerlIO *p, FILE *f)
{
- dVAR;
PerlIOl *l;
while ((l = *p)) {
if (l->tab == &PerlIO_stdio) {
PerlIO *
Perl_PerlIO_stdin(pTHX)
{
- dVAR;
if (!PL_perlio) {
PerlIO_stdstreams(aTHX);
}
PerlIO *
Perl_PerlIO_stdout(pTHX)
{
- dVAR;
if (!PL_perlio) {
PerlIO_stdstreams(aTHX);
}
PerlIO *
Perl_PerlIO_stderr(pTHX)
{
- dVAR;
if (!PL_perlio) {
PerlIO_stdstreams(aTHX);
}
va_list apc;
Perl_va_copy(ap, apc);
sv = vnewSVpvf(fmt, &apc);
+ va_end(apc);
#else
sv = vnewSVpvf(fmt, &ap);
#endif
s = SvPV_const(sv, len);
wrote = PerlIO_write(f, s, len);
SvREFCNT_dec(sv);
- va_end(apc);
return wrote;
}
const char *
Perl_PerlIO_context_layers(pTHX_ const char *mode)
{
- dVAR;
const char *direction = NULL;
SV *layers;
/*
https://perl5.git.perl.org / perl5.git / blobdiff