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-rw-r--r--libio/Makefile2
-rw-r--r--libio/feof.c5
-rw-r--r--libio/ferror.c3
-rw-r--r--libio/getc.c6
-rw-r--r--libio/iogets.c2
-rw-r--r--libio/libio.h35
-rw-r--r--libio/peekc.c41
-rw-r--r--libio/putc.c6
-rw-r--r--libio/putc_u.c4
-rw-r--r--libio/stdio.h13
10 files changed, 94 insertions, 23 deletions
diff --git a/libio/Makefile b/libio/Makefile
index ba64fc7..0c34125 100644
--- a/libio/Makefile
+++ b/libio/Makefile
@@ -42,7 +42,7 @@ include ../Makeconfig
ifneq (,$(filter %REENTRANT, $(defines)))
routines += clearerr_u feof_u ferror_u fputc_u getc_u getchar_u \
- iofflush_u putc_u putchar_u
+ iofflush_u putc_u putchar_u peekc
CPPFLAGS += -D_IO_MTSAFE_IO
endif
diff --git a/libio/feof.c b/libio/feof.c
index 9fb0008..34ca1da 100644
--- a/libio/feof.c
+++ b/libio/feof.c
@@ -25,7 +25,7 @@ the executable file might be covered by the GNU General Public License. */
#include "stdio.h"
int
-feof (fp)
+_IO_feof (fp)
_IO_FILE* fp;
{
int result;
@@ -35,11 +35,12 @@ feof (fp)
_IO_funlockfile (fp);
return result;
}
+weak_alias (_IO_feof, feof)
#ifdef _IO_MTSAFE_IO
/* The feof implementation for libio does not require locking because
it only accesses once a single variable and this is already atomic
(at least at thread level). */
-weak_alias (feof, feof_locked)
+weak_alias (_IO_feof, feof_locked)
#endif
diff --git a/libio/ferror.c b/libio/ferror.c
index 32fd6d0..4f75092 100644
--- a/libio/ferror.c
+++ b/libio/ferror.c
@@ -25,7 +25,7 @@ the executable file might be covered by the GNU General Public License. */
#include "stdio.h"
int
-ferror (fp)
+_IO_ferror (fp)
_IO_FILE* fp;
{
int result;
@@ -35,6 +35,7 @@ ferror (fp)
_IO_funlockfile (fp);
return result;
}
+weak_alias (_IO_ferror, ferror)
#ifdef _IO_MTSAFE_IO
diff --git a/libio/getc.c b/libio/getc.c
index c345e44..0c0b6b8 100644
--- a/libio/getc.c
+++ b/libio/getc.c
@@ -25,10 +25,10 @@ the executable file might be covered by the GNU General Public License. */
#include "libioP.h"
#include "stdio.h"
-#undef getc
+#undef _IO_getc
int
-getc (fp)
+_IO_getc (fp)
FILE *fp;
{
int result;
@@ -39,6 +39,8 @@ getc (fp)
__libc_cleanup_region_end (1);
return result;
}
+#undef getc
+weak_alias (_IO_getc, getc)
#ifdef _IO_MTSAFE_IO
# undef getc_locked
diff --git a/libio/iogets.c b/libio/iogets.c
index e132093..716ecd1 100644
--- a/libio/iogets.c
+++ b/libio/iogets.c
@@ -53,3 +53,5 @@ _IO_gets (buf)
}
weak_alias (_IO_gets, gets)
+
+link_warning (gets, "the `gets' function is dangerous and should not be used.")
diff --git a/libio/libio.h b/libio/libio.h
index e174ee1..5118b1e 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -26,6 +26,7 @@ the executable file might be covered by the GNU General Public License. */
#ifndef _IO_STDIO_H
#define _IO_STDIO_H
+#include <features.h>
#include <_G_config.h>
#define _IO_pos_t _G_fpos_t /* obsolete */
@@ -262,21 +263,43 @@ extern int __overflow __P((_IO_FILE*, int));
#define _IO_feof_unlocked(__fp) (((__fp)->_flags & _IO_EOF_SEEN) != 0)
#define _IO_ferror_unlocked(__fp) (((__fp)->_flags & _IO_ERR_SEEN) != 0)
+extern int _IO_getc __P ((_IO_FILE *__fp));
+extern int _IO_putc __P ((int __c, _IO_FILE *__fp));
+extern int _IO_feof __P ((_IO_FILE *__fp));
+extern int _IO_ferror __P ((_IO_FILE *__fp));
+
+extern int _IO_peekc_locked __P ((_IO_FILE *__fp));
+
/* This one is for Emacs. */
#define _IO_PENDING_OUTPUT_COUNT(_fp) \
((_fp)->_IO_write_ptr - (_fp)->_IO_write_base)
-extern int _IO_getc_locked __P ((_IO_FILE *));
-extern int _IO_putc_locked __P ((int, _IO_FILE *));
-
extern void _IO_flockfile __P ((_IO_FILE *));
extern void _IO_funlockfile __P ((_IO_FILE *));
+extern int _IO_ftrylockfile __P ((_IO_FILE *));
-#ifndef _IO_MTSAFE_IO
-# define _IO_flockfile(FILE) /**/
-# define _IO_funlockfile(FILE) /**/
+#ifdef _IO_MTSAFE_IO
+weak_extern (_IO_flockfile)
+weak_extern (_IO_funlockfile)
+#else
+# define _IO_flockfile(_fp) /**/
+# define _IO_funlockfile(_fp) /**/
+# define _IO_ftrylockfile(_fp) /**/
#endif /* !_IO_MTSAFE_IO */
+#ifdef __USE_REENTRANT
+# define _IO_getc(_fp) _IO_getc (_fp)
+# define _IO_peekc(_fp) _IO_peekc_locked (_fp)
+# define _IO_putc(_ch, _fp) _IO_putc (_ch, _fp)
+# define _IO_feof(_fp) _IO_feof (_fp)
+# define _IO_ferror(_fp) _IO_ferror (_fp)
+#else
+# define _IO_getc(_fp) _IO_getc_unlocked (_fp)
+# define _IO_peekc(_fp) _IO_peekc_unlocked (_fp)
+# define _IO_putc(_ch, _fp) _IO_putc_unlocked (_ch, _fp)
+# define _IO_feof(_fp) _IO_feof_unlocked (_fp)
+# define _IO_ferror(_fp) _IO_ferror_unlocked (_fp)
+#endif
extern int _IO_vfscanf __P((_IO_FILE*, const char*, _IO_va_list, int*));
extern int _IO_vfprintf __P((_IO_FILE*, const char*, _IO_va_list));
diff --git a/libio/peekc.c b/libio/peekc.c
new file mode 100644
index 0000000..2b0a812
--- /dev/null
+++ b/libio/peekc.c
@@ -0,0 +1,41 @@
+/*
+Copyright (C) 1993, 1995, 1996 Free Software Foundation, Inc.
+
+This file is part of the GNU IO Library. This library is free
+software; you can redistribute it and/or modify it under the
+terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this library; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+As a special exception, if you link this library with files
+compiled with a GNU compiler to produce an executable, this does not cause
+the resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why
+the executable file might be covered by the GNU General Public License. */
+
+#include "libioP.h"
+#include "stdio.h"
+
+#undef _IO_peekc
+
+int
+_IO_peekc_locked (fp)
+ FILE *fp;
+{
+ int result;
+ CHECK_FILE (fp, EOF);
+ __libc_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
+ _IO_flockfile (fp);
+ result = _IO_peekc_unlocked (fp);
+ __libc_cleanup_region_end (1);
+ return result;
+}
diff --git a/libio/putc.c b/libio/putc.c
index bc69e2e..5aa3b68 100644
--- a/libio/putc.c
+++ b/libio/putc.c
@@ -19,10 +19,10 @@ Cambridge, MA 02139, USA. */
#include "libioP.h"
#include "stdio.h"
-#undef putc
+#undef _IO_putc
int
-putc (c, fp)
+_IO_putc (c, fp)
int c;
_IO_FILE *fp;
{
@@ -34,6 +34,8 @@ putc (c, fp)
__libc_cleanup_region_end (1);
return result;
}
+#undef putc
+weak_alias (_IO_putc, putc)
#ifdef _IO_MTSAFE_IO
# undef putc_locked
diff --git a/libio/putc_u.c b/libio/putc_u.c
index 85912e5..18bbd49 100644
--- a/libio/putc_u.c
+++ b/libio/putc_u.c
@@ -29,7 +29,3 @@ putc_unlocked (c, fp)
CHECK_FILE (fp, EOF);
return _IO_putc_unlocked (c, fp);
}
-
-#ifdef _LIBC_REENTRANT
-weak_alias (putc_unlocked, _IO_putc_unlocked)
-#endif
diff --git a/libio/stdio.h b/libio/stdio.h
index c71cf4d..a47b663 100644
--- a/libio/stdio.h
+++ b/libio/stdio.h
@@ -221,6 +221,7 @@ extern int fileno_locked __P ((FILE *));
extern int fileno_unlocked __P ((FILE *));
extern void flockfile __P ((FILE *));
extern void funlockfile __P ((FILE *));
+extern int ftrylockfile __P ((FILE *));
extern int fclose_unlocked __P ((FILE *));
extern int fflush_locked __P ((FILE *));
extern int fflush_unlocked __P ((FILE *));
@@ -240,17 +241,19 @@ extern int putchar_unlocked __P ((int));
# ifndef _LIBC
# define getc_unlocked(fp) _IO_getc_unlocked (fp)
-# define getc_locked(fp) fgetc (fp)
+# define getc_locked(fp) _IO_getc (fp)
# define getchar_unlocked() _IO_getc_unlocked (stdin)
-# define getchar_locked() getc (stdin)
+# define getchar_locked() _IO_getc (stdin)
# define putchar_unlocked(c) _IO_putc_unlocked (c, stdout)
-# define putchar_locked(c) putc (c, stdout)
+# define putchar_locked(c) _IO_putc (c, stdout)
# endif
#endif /* __USE_REENTRANT */
-#define putchar(c) putc (c, stdout)
-#define getchar() getc (stdin)
+#define getc(_fp) _IO_getc (_fp)
+#define putc(_ch, _fp) _IO_putc (_ch, _fp)
+#define putchar(_ch) _IO_putc (_ch, stdout)
+#define getchar() _IO_getc (stdin)
#ifdef __cplusplus