summaryrefslogtreecommitdiff
path: root/libio/libioP.h
diff options
context:
space:
mode:
Diffstat (limited to 'libio/libioP.h')
-rw-r--r--libio/libioP.h610
1 files changed, 280 insertions, 330 deletions
diff --git a/libio/libioP.h b/libio/libioP.h
index 8706af2d90..df2633d858 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993-2016 Free Software Foundation, Inc.
+/* Copyright (C) 1993-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -32,37 +32,25 @@
FIXME: All of the C++ cruft eventually needs to go away. */
+#ifndef _LIBIOP_H
+#define _LIBIOP_H 1
+
#include <stddef.h>
#include <errno.h>
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
-#if defined __GLIBC__ && __GLIBC__ >= 2
-# include <libc-lock.h>
-#else
-/*# include <comthread.h>*/
-#endif
+#include <libc-lock.h>
#include <math_ldbl_opt.h>
+#include <stdio.h>
+#include <libio/libio.h>
#include "iolibio.h"
-/* Control of exported symbols. Used in glibc. By default we don't
- do anything. */
-#ifndef libc_hidden_proto
-# define libc_hidden_proto(name)
-#endif
-#ifndef libc_hidden_def
-# define libc_hidden_def(name)
-#endif
-#ifndef libc_hidden_weak
-# define libc_hidden_weak(name)
-#endif
+#include <shlib-compat.h>
-#ifdef __cplusplus
-extern "C" {
-#endif
+/* For historical reasons this is the name of the sysdeps header that
+ adjusts the libio configuration. */
+#include <_G_config.h>
#define _IO_seek_set 0
#define _IO_seek_cur 1
@@ -78,7 +66,7 @@ extern "C" {
* with the _IO_JUMPS macro. The jump table has an eccentric format,
* so as to be compatible with the layout of a C++ virtual function table.
* (as implemented by g++). When a pointer to a streambuf object is
- * coerced to an (_IO_FILE*), then _IO_JUMPS on the result just
+ * coerced to an (FILE*), then _IO_JUMPS on the result just
* happens to point to the virtual function table of the streambuf.
* Thus the _IO_JUMPS function table used for C stdio/libio does
* double duty as the virtual function table for C++ streambuf.
@@ -89,18 +77,10 @@ extern "C" {
* object being acted on (i.e. the 'this' parameter).
*/
-#ifdef _LIBC
-# include <shlib-compat.h>
-# if !SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
- /* Setting this macro disables the use of the _vtable_offset
- bias in _IO_JUMPS_FUNCS, below. That is only needed if we
- want to support old binaries (see oldfileops.c). */
-# define _G_IO_NO_BACKWARD_COMPAT 1
-# endif
-#endif
-
-#if (!defined _IO_USE_OLD_IO_FILE \
- && (!defined _G_IO_NO_BACKWARD_COMPAT || _G_IO_NO_BACKWARD_COMPAT == 0))
+/* Setting this macro to 1 enables the use of the _vtable_offset bias
+ in _IO_JUMPS_FUNCS, below. This is only needed for new-format
+ _IO_FILE in libc that must support old binaries (see oldfileops.c). */
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1) && !defined _IO_USE_OLD_IO_FILE
# define _IO_JUMPS_OFFSET 1
#else
# define _IO_JUMPS_OFFSET 0
@@ -125,11 +105,12 @@ extern "C" {
#if _IO_JUMPS_OFFSET
# define _IO_JUMPS_FUNC(THIS) \
- (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS_FILE_plus (THIS) \
- + (THIS)->_vtable_offset))
+ (IO_validate_vtable \
+ (*(struct _IO_jump_t **) ((void *) &_IO_JUMPS_FILE_plus (THIS) \
+ + (THIS)->_vtable_offset)))
# define _IO_vtable_offset(THIS) (THIS)->_vtable_offset
#else
-# define _IO_JUMPS_FUNC(THIS) _IO_JUMPS_FILE_plus (THIS)
+# define _IO_JUMPS_FUNC(THIS) (IO_validate_vtable (_IO_JUMPS_FILE_plus (THIS)))
# define _IO_vtable_offset(THIS) 0
#endif
#define _IO_WIDE_JUMPS_FUNC(THIS) _IO_WIDE_JUMPS(THIS)
@@ -149,14 +130,14 @@ extern "C" {
/* The 'finish' function does any final cleaning up of an _IO_FILE object.
It does not delete (free) it, but does everything else to finalize it.
It matches the streambuf::~streambuf virtual destructor. */
-typedef void (*_IO_finish_t) (_IO_FILE *, int); /* finalize */
+typedef void (*_IO_finish_t) (FILE *, int); /* finalize */
#define _IO_FINISH(FP) JUMP1 (__finish, FP, 0)
#define _IO_WFINISH(FP) WJUMP1 (__finish, FP, 0)
/* The 'overflow' hook flushes the buffer.
The second argument is a character, or EOF.
It matches the streambuf::overflow virtual function. */
-typedef int (*_IO_overflow_t) (_IO_FILE *, int);
+typedef int (*_IO_overflow_t) (FILE *, int);
#define _IO_OVERFLOW(FP, CH) JUMP1 (__overflow, FP, CH)
#define _IO_WOVERFLOW(FP, CH) WJUMP1 (__overflow, FP, CH)
@@ -164,7 +145,7 @@ typedef int (*_IO_overflow_t) (_IO_FILE *, int);
It returns the next character (as an unsigned char) or EOF. The next
character remains in the get buffer, and the get position is not changed.
It matches the streambuf::underflow virtual function. */
-typedef int (*_IO_underflow_t) (_IO_FILE *);
+typedef int (*_IO_underflow_t) (FILE *);
#define _IO_UNDERFLOW(FP) JUMP0 (__underflow, FP)
#define _IO_WUNDERFLOW(FP) WJUMP0 (__underflow, FP)
@@ -178,22 +159,22 @@ typedef int (*_IO_underflow_t) (_IO_FILE *);
/* The 'pbackfail' hook handles backing up.
It matches the streambuf::pbackfail virtual function. */
-typedef int (*_IO_pbackfail_t) (_IO_FILE *, int);
+typedef int (*_IO_pbackfail_t) (FILE *, int);
#define _IO_PBACKFAIL(FP, CH) JUMP1 (__pbackfail, FP, CH)
#define _IO_WPBACKFAIL(FP, CH) WJUMP1 (__pbackfail, FP, CH)
/* The 'xsputn' hook writes upto N characters from buffer DATA.
Returns EOF or the number of character actually written.
It matches the streambuf::xsputn virtual function. */
-typedef _IO_size_t (*_IO_xsputn_t) (_IO_FILE *FP, const void *DATA,
- _IO_size_t N);
+typedef size_t (*_IO_xsputn_t) (FILE *FP, const void *DATA,
+ size_t N);
#define _IO_XSPUTN(FP, DATA, N) JUMP2 (__xsputn, FP, DATA, N)
#define _IO_WXSPUTN(FP, DATA, N) WJUMP2 (__xsputn, FP, DATA, N)
/* The 'xsgetn' hook reads upto N characters into buffer DATA.
Returns the number of character actually read.
It matches the streambuf::xsgetn virtual function. */
-typedef _IO_size_t (*_IO_xsgetn_t) (_IO_FILE *FP, void *DATA, _IO_size_t N);
+typedef size_t (*_IO_xsgetn_t) (FILE *FP, void *DATA, size_t N);
#define _IO_XSGETN(FP, DATA, N) JUMP2 (__xsgetn, FP, DATA, N)
#define _IO_WXSGETN(FP, DATA, N) WJUMP2 (__xsgetn, FP, DATA, N)
@@ -202,7 +183,7 @@ typedef _IO_size_t (*_IO_xsgetn_t) (_IO_FILE *FP, void *DATA, _IO_size_t N);
(MODE==1), or the end of the file (MODE==2).
It matches the streambuf::seekoff virtual function.
It is also used for the ANSI fseek function. */
-typedef _IO_off64_t (*_IO_seekoff_t) (_IO_FILE *FP, _IO_off64_t OFF, int DIR,
+typedef off64_t (*_IO_seekoff_t) (FILE *FP, off64_t OFF, int DIR,
int MODE);
#define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3 (__seekoff, FP, OFF, DIR, MODE)
#define _IO_WSEEKOFF(FP, OFF, DIR, MODE) WJUMP3 (__seekoff, FP, OFF, DIR, MODE)
@@ -212,27 +193,27 @@ typedef _IO_off64_t (*_IO_seekoff_t) (_IO_FILE *FP, _IO_off64_t OFF, int DIR,
It matches the streambuf::seekpos virtual function.
It is also used for the ANSI fgetpos and fsetpos functions. */
/* The _IO_seek_cur and _IO_seek_end options are not allowed. */
-typedef _IO_off64_t (*_IO_seekpos_t) (_IO_FILE *, _IO_off64_t, int);
+typedef off64_t (*_IO_seekpos_t) (FILE *, off64_t, int);
#define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2 (__seekpos, FP, POS, FLAGS)
#define _IO_WSEEKPOS(FP, POS, FLAGS) WJUMP2 (__seekpos, FP, POS, FLAGS)
/* The 'setbuf' hook gives a buffer to the file.
It matches the streambuf::setbuf virtual function. */
-typedef _IO_FILE* (*_IO_setbuf_t) (_IO_FILE *, char *, _IO_ssize_t);
+typedef FILE* (*_IO_setbuf_t) (FILE *, char *, ssize_t);
#define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2 (__setbuf, FP, BUFFER, LENGTH)
#define _IO_WSETBUF(FP, BUFFER, LENGTH) WJUMP2 (__setbuf, FP, BUFFER, LENGTH)
/* The 'sync' hook attempts to synchronize the internal data structures
of the file with the external state.
It matches the streambuf::sync virtual function. */
-typedef int (*_IO_sync_t) (_IO_FILE *);
+typedef int (*_IO_sync_t) (FILE *);
#define _IO_SYNC(FP) JUMP0 (__sync, FP)
#define _IO_WSYNC(FP) WJUMP0 (__sync, FP)
/* The 'doallocate' hook is used to tell the file to allocate a buffer.
It matches the streambuf::doallocate virtual function, which is not
in the ANSI/ISO C++ standard, but is part traditional implementations. */
-typedef int (*_IO_doallocate_t) (_IO_FILE *);
+typedef int (*_IO_doallocate_t) (FILE *);
#define _IO_DOALLOCATE(FP) JUMP0 (__doallocate, FP)
#define _IO_WDOALLOCATE(FP) WJUMP0 (__doallocate, FP)
@@ -240,7 +221,7 @@ typedef int (*_IO_doallocate_t) (_IO_FILE *);
sysstat) are low-level hooks specific to this implementation.
There is no correspondence in the ANSI/ISO C++ standard library.
The hooks basically correspond to the Unix system functions
- (read, write, close, lseek, and stat) except that a _IO_FILE*
+ (read, write, close, lseek, and stat) except that a FILE*
parameter is used instead of an integer file descriptor; the default
implementation used for normal files just calls those functions.
The advantage of overriding these functions instead of the higher-level
@@ -251,7 +232,7 @@ typedef int (*_IO_doallocate_t) (_IO_FILE *);
an existing buffer. It generalizes the Unix read(2) function.
It matches the streambuf::sys_read virtual function, which is
specific to this implementation. */
-typedef _IO_ssize_t (*_IO_read_t) (_IO_FILE *, void *, _IO_ssize_t);
+typedef ssize_t (*_IO_read_t) (FILE *, void *, ssize_t);
#define _IO_SYSREAD(FP, DATA, LEN) JUMP2 (__read, FP, DATA, LEN)
#define _IO_WSYSREAD(FP, DATA, LEN) WJUMP2 (__read, FP, DATA, LEN)
@@ -259,7 +240,7 @@ typedef _IO_ssize_t (*_IO_read_t) (_IO_FILE *, void *, _IO_ssize_t);
to an external file. It generalizes the Unix write(2) function.
It matches the streambuf::sys_write virtual function, which is
specific to this implementation. */
-typedef _IO_ssize_t (*_IO_write_t) (_IO_FILE *, const void *, _IO_ssize_t);
+typedef ssize_t (*_IO_write_t) (FILE *, const void *, ssize_t);
#define _IO_SYSWRITE(FP, DATA, LEN) JUMP2 (__write, FP, DATA, LEN)
#define _IO_WSYSWRITE(FP, DATA, LEN) WJUMP2 (__write, FP, DATA, LEN)
@@ -267,7 +248,7 @@ typedef _IO_ssize_t (*_IO_write_t) (_IO_FILE *, const void *, _IO_ssize_t);
It generalizes the Unix lseek(2) function.
It matches the streambuf::sys_seek virtual function, which is
specific to this implementation. */
-typedef _IO_off64_t (*_IO_seek_t) (_IO_FILE *, _IO_off64_t, int);
+typedef off64_t (*_IO_seek_t) (FILE *, off64_t, int);
#define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2 (__seek, FP, OFFSET, MODE)
#define _IO_WSYSSEEK(FP, OFFSET, MODE) WJUMP2 (__seek, FP, OFFSET, MODE)
@@ -275,7 +256,7 @@ typedef _IO_off64_t (*_IO_seek_t) (_IO_FILE *, _IO_off64_t, int);
external file. It generalizes the Unix close(2) function.
It matches the streambuf::sys_close virtual function, which is
specific to this implementation. */
-typedef int (*_IO_close_t) (_IO_FILE *); /* finalize */
+typedef int (*_IO_close_t) (FILE *); /* finalize */
#define _IO_SYSCLOSE(FP) JUMP0 (__close, FP)
#define _IO_WSYSCLOSE(FP) WJUMP0 (__close, FP)
@@ -283,20 +264,20 @@ typedef int (*_IO_close_t) (_IO_FILE *); /* finalize */
into a struct stat buffer. It generalizes the Unix fstat(2) call.
It matches the streambuf::sys_stat virtual function, which is
specific to this implementation. */
-typedef int (*_IO_stat_t) (_IO_FILE *, void *);
+typedef int (*_IO_stat_t) (FILE *, void *);
#define _IO_SYSSTAT(FP, BUF) JUMP1 (__stat, FP, BUF)
#define _IO_WSYSSTAT(FP, BUF) WJUMP1 (__stat, FP, BUF)
/* The 'showmany' hook can be used to get an image how much input is
available. In many cases the answer will be 0 which means unknown
but some cases one can provide real information. */
-typedef int (*_IO_showmanyc_t) (_IO_FILE *);
+typedef int (*_IO_showmanyc_t) (FILE *);
#define _IO_SHOWMANYC(FP) JUMP0 (__showmanyc, FP)
#define _IO_WSHOWMANYC(FP) WJUMP0 (__showmanyc, FP)
/* The 'imbue' hook is used to get information about the currently
installed locales. */
-typedef void (*_IO_imbue_t) (_IO_FILE *, void *);
+typedef void (*_IO_imbue_t) (FILE *, void *);
#define _IO_IMBUE(FP, LOCALE) JUMP1 (__imbue, FP, LOCALE)
#define _IO_WIMBUE(FP, LOCALE) WJUMP1 (__imbue, FP, LOCALE)
@@ -328,10 +309,6 @@ struct _IO_jump_t
JUMP_FIELD(_IO_stat_t, __stat);
JUMP_FIELD(_IO_showmanyc_t, __showmanyc);
JUMP_FIELD(_IO_imbue_t, __imbue);
-#if 0
- get_column;
- set_column;
-#endif
};
/* We always allocate an extra word following an _IO_FILE.
@@ -341,7 +318,7 @@ struct _IO_jump_t
struct _IO_FILE_plus
{
- _IO_FILE file;
+ FILE file;
const struct _IO_jump_t *vtable;
};
@@ -361,72 +338,71 @@ struct _IO_cookie_file
{
struct _IO_FILE_plus __fp;
void *__cookie;
- _IO_cookie_io_functions_t __io_functions;
+ cookie_io_functions_t __io_functions;
};
-_IO_FILE *_IO_fopencookie (void *cookie, const char *mode,
- _IO_cookie_io_functions_t io_functions);
+FILE *_IO_fopencookie (void *cookie, const char *mode,
+ cookie_io_functions_t io_functions);
/* Iterator type for walking global linked list of _IO_FILE objects. */
-typedef struct _IO_FILE *_IO_ITER;
+typedef FILE *_IO_ITER;
/* Generic functions */
-extern void _IO_switch_to_main_get_area (_IO_FILE *) __THROW;
-extern void _IO_switch_to_backup_area (_IO_FILE *) __THROW;
-extern int _IO_switch_to_get_mode (_IO_FILE *);
+extern void _IO_switch_to_main_get_area (FILE *) __THROW;
+extern void _IO_switch_to_backup_area (FILE *) __THROW;
+extern int _IO_switch_to_get_mode (FILE *);
libc_hidden_proto (_IO_switch_to_get_mode)
-extern void _IO_init (_IO_FILE *, int) __THROW;
-libc_hidden_proto (_IO_init)
-extern int _IO_sputbackc (_IO_FILE *, int) __THROW;
+extern void _IO_init_internal (FILE *, int) attribute_hidden;
+extern int _IO_sputbackc (FILE *, int) __THROW;
libc_hidden_proto (_IO_sputbackc)
-extern int _IO_sungetc (_IO_FILE *) __THROW;
+extern int _IO_sungetc (FILE *) __THROW;
extern void _IO_un_link (struct _IO_FILE_plus *) __THROW;
libc_hidden_proto (_IO_un_link)
extern void _IO_link_in (struct _IO_FILE_plus *) __THROW;
libc_hidden_proto (_IO_link_in)
-extern void _IO_doallocbuf (_IO_FILE *) __THROW;
+extern void _IO_doallocbuf (FILE *) __THROW;
libc_hidden_proto (_IO_doallocbuf)
-extern void _IO_unsave_markers (_IO_FILE *) __THROW;
+extern void _IO_unsave_markers (FILE *) __THROW;
libc_hidden_proto (_IO_unsave_markers)
-extern void _IO_setb (_IO_FILE *, char *, char *, int) __THROW;
+extern void _IO_setb (FILE *, char *, char *, int) __THROW;
libc_hidden_proto (_IO_setb)
extern unsigned _IO_adjust_column (unsigned, const char *, int) __THROW;
libc_hidden_proto (_IO_adjust_column)
#define _IO_sputn(__fp, __s, __n) _IO_XSPUTN (__fp, __s, __n)
-_IO_ssize_t _IO_least_wmarker (_IO_FILE *, wchar_t *) __THROW;
+ssize_t _IO_least_wmarker (FILE *, wchar_t *) __THROW;
libc_hidden_proto (_IO_least_wmarker)
-extern void _IO_switch_to_main_wget_area (_IO_FILE *) __THROW;
+extern void _IO_switch_to_main_wget_area (FILE *) __THROW;
libc_hidden_proto (_IO_switch_to_main_wget_area)
-extern void _IO_switch_to_wbackup_area (_IO_FILE *) __THROW;
+extern void _IO_switch_to_wbackup_area (FILE *) __THROW;
libc_hidden_proto (_IO_switch_to_wbackup_area)
-extern int _IO_switch_to_wget_mode (_IO_FILE *);
+extern int _IO_switch_to_wget_mode (FILE *);
libc_hidden_proto (_IO_switch_to_wget_mode)
-extern void _IO_wsetb (_IO_FILE *, wchar_t *, wchar_t *, int) __THROW;
+extern void _IO_wsetb (FILE *, wchar_t *, wchar_t *, int) __THROW;
libc_hidden_proto (_IO_wsetb)
-extern wint_t _IO_sputbackwc (_IO_FILE *, wint_t) __THROW;
+extern wint_t _IO_sputbackwc (FILE *, wint_t) __THROW;
libc_hidden_proto (_IO_sputbackwc)
-extern wint_t _IO_sungetwc (_IO_FILE *) __THROW;
-extern void _IO_wdoallocbuf (_IO_FILE *) __THROW;
+extern wint_t _IO_sungetwc (FILE *) __THROW;
+extern void _IO_wdoallocbuf (FILE *) __THROW;
libc_hidden_proto (_IO_wdoallocbuf)
-extern void _IO_unsave_wmarkers (_IO_FILE *) __THROW;
+extern void _IO_unsave_wmarkers (FILE *) __THROW;
extern unsigned _IO_adjust_wcolumn (unsigned, const wchar_t *, int) __THROW;
-extern _IO_off64_t get_file_offset (_IO_FILE *fp);
+extern off64_t get_file_offset (FILE *fp);
/* Marker-related function. */
-extern void _IO_init_marker (struct _IO_marker *, _IO_FILE *);
-extern void _IO_init_wmarker (struct _IO_marker *, _IO_FILE *);
+extern void _IO_init_marker (struct _IO_marker *, FILE *);
+extern void _IO_init_wmarker (struct _IO_marker *, FILE *);
extern void _IO_remove_marker (struct _IO_marker *) __THROW;
extern int _IO_marker_difference (struct _IO_marker *, struct _IO_marker *)
__THROW;
extern int _IO_marker_delta (struct _IO_marker *) __THROW;
extern int _IO_wmarker_delta (struct _IO_marker *) __THROW;
-extern int _IO_seekmark (_IO_FILE *, struct _IO_marker *, int) __THROW;
-extern int _IO_seekwmark (_IO_FILE *, struct _IO_marker *, int) __THROW;
+extern int _IO_seekmark (FILE *, struct _IO_marker *, int) __THROW;
+extern int _IO_seekwmark (FILE *, struct _IO_marker *, int) __THROW;
/* Functions for iterating global list and dealing with its lock */
@@ -436,7 +412,7 @@ extern _IO_ITER _IO_iter_end (void) __THROW;
libc_hidden_proto (_IO_iter_end)
extern _IO_ITER _IO_iter_next (_IO_ITER) __THROW;
libc_hidden_proto (_IO_iter_next)
-extern _IO_FILE *_IO_iter_file (_IO_ITER) __THROW;
+extern FILE *_IO_iter_file (_IO_ITER) __THROW;
libc_hidden_proto (_IO_iter_file)
extern void _IO_list_lock (void) __THROW;
libc_hidden_proto (_IO_list_lock)
@@ -444,46 +420,48 @@ extern void _IO_list_unlock (void) __THROW;
libc_hidden_proto (_IO_list_unlock)
extern void _IO_list_resetlock (void) __THROW;
libc_hidden_proto (_IO_list_resetlock)
+extern void _IO_enable_locks (void) __THROW;
+libc_hidden_proto (_IO_enable_locks)
/* Default jumptable functions. */
-extern int _IO_default_underflow (_IO_FILE *) __THROW;
-extern int _IO_default_uflow (_IO_FILE *);
+extern int _IO_default_underflow (FILE *) __THROW;
+extern int _IO_default_uflow (FILE *);
libc_hidden_proto (_IO_default_uflow)
-extern wint_t _IO_wdefault_uflow (_IO_FILE *);
+extern wint_t _IO_wdefault_uflow (FILE *);
libc_hidden_proto (_IO_wdefault_uflow)
-extern int _IO_default_doallocate (_IO_FILE *) __THROW;
+extern int _IO_default_doallocate (FILE *) __THROW;
libc_hidden_proto (_IO_default_doallocate)
-extern int _IO_wdefault_doallocate (_IO_FILE *) __THROW;
+extern int _IO_wdefault_doallocate (FILE *) __THROW;
libc_hidden_proto (_IO_wdefault_doallocate)
-extern void _IO_default_finish (_IO_FILE *, int) __THROW;
+extern void _IO_default_finish (FILE *, int) __THROW;
libc_hidden_proto (_IO_default_finish)
-extern void _IO_wdefault_finish (_IO_FILE *, int) __THROW;
+extern void _IO_wdefault_finish (FILE *, int) __THROW;
libc_hidden_proto (_IO_wdefault_finish)
-extern int _IO_default_pbackfail (_IO_FILE *, int) __THROW;
+extern int _IO_default_pbackfail (FILE *, int) __THROW;
libc_hidden_proto (_IO_default_pbackfail)
-extern wint_t _IO_wdefault_pbackfail (_IO_FILE *, wint_t) __THROW;
+extern wint_t _IO_wdefault_pbackfail (FILE *, wint_t) __THROW;
libc_hidden_proto (_IO_wdefault_pbackfail)
-extern _IO_FILE* _IO_default_setbuf (_IO_FILE *, char *, _IO_ssize_t);
-extern _IO_size_t _IO_default_xsputn (_IO_FILE *, const void *, _IO_size_t);
+extern FILE* _IO_default_setbuf (FILE *, char *, ssize_t);
+extern size_t _IO_default_xsputn (FILE *, const void *, size_t);
libc_hidden_proto (_IO_default_xsputn)
-extern _IO_size_t _IO_wdefault_xsputn (_IO_FILE *, const void *, _IO_size_t);
+extern size_t _IO_wdefault_xsputn (FILE *, const void *, size_t);
libc_hidden_proto (_IO_wdefault_xsputn)
-extern _IO_size_t _IO_default_xsgetn (_IO_FILE *, void *, _IO_size_t);
+extern size_t _IO_default_xsgetn (FILE *, void *, size_t);
libc_hidden_proto (_IO_default_xsgetn)
-extern _IO_size_t _IO_wdefault_xsgetn (_IO_FILE *, void *, _IO_size_t);
+extern size_t _IO_wdefault_xsgetn (FILE *, void *, size_t);
libc_hidden_proto (_IO_wdefault_xsgetn)
-extern _IO_off64_t _IO_default_seekoff (_IO_FILE *, _IO_off64_t, int, int)
+extern off64_t _IO_default_seekoff (FILE *, off64_t, int, int)
__THROW;
-extern _IO_off64_t _IO_default_seekpos (_IO_FILE *, _IO_off64_t, int);
-extern _IO_ssize_t _IO_default_write (_IO_FILE *, const void *, _IO_ssize_t);
-extern _IO_ssize_t _IO_default_read (_IO_FILE *, void *, _IO_ssize_t);
-extern int _IO_default_stat (_IO_FILE *, void *) __THROW;
-extern _IO_off64_t _IO_default_seek (_IO_FILE *, _IO_off64_t, int) __THROW;
-extern int _IO_default_sync (_IO_FILE *) __THROW;
+extern off64_t _IO_default_seekpos (FILE *, off64_t, int);
+extern ssize_t _IO_default_write (FILE *, const void *, ssize_t);
+extern ssize_t _IO_default_read (FILE *, void *, ssize_t);
+extern int _IO_default_stat (FILE *, void *) __THROW;
+extern off64_t _IO_default_seek (FILE *, off64_t, int) __THROW;
+extern int _IO_default_sync (FILE *) __THROW;
#define _IO_default_close ((_IO_close_t) _IO_default_sync)
-extern int _IO_default_showmanyc (_IO_FILE *) __THROW;
-extern void _IO_default_imbue (_IO_FILE *, void *) __THROW;
+extern int _IO_default_showmanyc (FILE *) __THROW;
+extern void _IO_default_imbue (FILE *, void *) __THROW;
extern const struct _IO_jump_t _IO_file_jumps;
libc_hidden_proto (_IO_file_jumps)
@@ -499,11 +477,11 @@ extern const struct _IO_jump_t _IO_old_proc_jumps attribute_hidden;
extern const struct _IO_jump_t _IO_str_jumps attribute_hidden;
extern const struct _IO_jump_t _IO_wstr_jumps attribute_hidden;
extern const struct _IO_codecvt __libio_codecvt attribute_hidden;
-extern int _IO_do_write (_IO_FILE *, const char *, _IO_size_t);
+extern int _IO_do_write (FILE *, const char *, size_t);
libc_hidden_proto (_IO_do_write)
-extern int _IO_new_do_write (_IO_FILE *, const char *, _IO_size_t);
-extern int _IO_old_do_write (_IO_FILE *, const char *, _IO_size_t);
-extern int _IO_wdo_write (_IO_FILE *, const wchar_t *, _IO_size_t);
+extern int _IO_new_do_write (FILE *, const char *, size_t);
+extern int _IO_old_do_write (FILE *, const char *, size_t);
+extern int _IO_wdo_write (FILE *, const wchar_t *, size_t);
libc_hidden_proto (_IO_wdo_write)
extern int _IO_flush_all_lockp (int);
extern int _IO_flush_all (void);
@@ -511,30 +489,24 @@ libc_hidden_proto (_IO_flush_all)
extern int _IO_cleanup (void);
extern void _IO_flush_all_linebuffered (void);
libc_hidden_proto (_IO_flush_all_linebuffered)
-extern int _IO_new_fgetpos (_IO_FILE *, _IO_fpos_t *);
-extern int _IO_old_fgetpos (_IO_FILE *, _IO_fpos_t *);
-extern int _IO_new_fsetpos (_IO_FILE *, const _IO_fpos_t *);
-extern int _IO_old_fsetpos (_IO_FILE *, const _IO_fpos_t *);
-extern int _IO_new_fgetpos64 (_IO_FILE *, _IO_fpos64_t *);
-extern int _IO_old_fgetpos64 (_IO_FILE *, _IO_fpos64_t *);
-extern int _IO_new_fsetpos64 (_IO_FILE *, const _IO_fpos64_t *);
-extern int _IO_old_fsetpos64 (_IO_FILE *, const _IO_fpos64_t *);
-extern void _IO_old_init (_IO_FILE *fp, int flags) __THROW;
-
-
-#if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-# define _IO_do_flush(_f) \
+extern int _IO_new_fgetpos (FILE *, __fpos_t *);
+extern int _IO_old_fgetpos (FILE *, __fpos_t *);
+extern int _IO_new_fsetpos (FILE *, const __fpos_t *);
+extern int _IO_old_fsetpos (FILE *, const __fpos_t *);
+extern int _IO_new_fgetpos64 (FILE *, __fpos64_t *);
+extern int _IO_old_fgetpos64 (FILE *, __fpos64_t *);
+extern int _IO_new_fsetpos64 (FILE *, const __fpos64_t *);
+extern int _IO_old_fsetpos64 (FILE *, const __fpos64_t *);
+extern void _IO_old_init (FILE *fp, int flags) __THROW;
+
+
+#define _IO_do_flush(_f) \
((_f)->_mode <= 0 \
? _IO_do_write(_f, (_f)->_IO_write_base, \
(_f)->_IO_write_ptr-(_f)->_IO_write_base) \
: _IO_wdo_write(_f, (_f)->_wide_data->_IO_write_base, \
((_f)->_wide_data->_IO_write_ptr \
- (_f)->_wide_data->_IO_write_base)))
-#else
-# define _IO_do_flush(_f) \
- _IO_do_write(_f, (_f)->_IO_write_base, \
- (_f)->_IO_write_ptr-(_f)->_IO_write_base)
-#endif
#define _IO_old_do_flush(_f) \
_IO_old_do_write(_f, (_f)->_IO_write_base, \
(_f)->_IO_write_ptr-(_f)->_IO_write_base)
@@ -563,148 +535,144 @@ extern void _IO_old_init (_IO_FILE *fp, int flags) __THROW;
/* Jumptable functions for files. */
-extern int _IO_file_doallocate (_IO_FILE *) __THROW;
+extern int _IO_file_doallocate (FILE *) __THROW;
libc_hidden_proto (_IO_file_doallocate)
-extern _IO_FILE* _IO_file_setbuf (_IO_FILE *, char *, _IO_ssize_t);
+extern FILE* _IO_file_setbuf (FILE *, char *, ssize_t);
libc_hidden_proto (_IO_file_setbuf)
-extern _IO_off64_t _IO_file_seekoff (_IO_FILE *, _IO_off64_t, int, int);
+extern off64_t _IO_file_seekoff (FILE *, off64_t, int, int);
libc_hidden_proto (_IO_file_seekoff)
-extern _IO_off64_t _IO_file_seekoff_mmap (_IO_FILE *, _IO_off64_t, int, int)
+extern off64_t _IO_file_seekoff_mmap (FILE *, off64_t, int, int)
__THROW;
-extern _IO_size_t _IO_file_xsputn (_IO_FILE *, const void *, _IO_size_t);
+extern size_t _IO_file_xsputn (FILE *, const void *, size_t);
libc_hidden_proto (_IO_file_xsputn)
-extern _IO_size_t _IO_file_xsgetn (_IO_FILE *, void *, _IO_size_t);
+extern size_t _IO_file_xsgetn (FILE *, void *, size_t);
libc_hidden_proto (_IO_file_xsgetn)
-extern int _IO_file_stat (_IO_FILE *, void *) __THROW;
+extern int _IO_file_stat (FILE *, void *) __THROW;
libc_hidden_proto (_IO_file_stat)
-extern int _IO_file_close (_IO_FILE *) __THROW;
+extern int _IO_file_close (FILE *) __THROW;
libc_hidden_proto (_IO_file_close)
-extern int _IO_file_close_mmap (_IO_FILE *) __THROW;
-extern int _IO_file_underflow (_IO_FILE *);
+extern int _IO_file_close_mmap (FILE *) __THROW;
+extern int _IO_file_underflow (FILE *);
libc_hidden_proto (_IO_file_underflow)
-extern int _IO_file_underflow_mmap (_IO_FILE *);
-extern int _IO_file_underflow_maybe_mmap (_IO_FILE *);
-extern int _IO_file_overflow (_IO_FILE *, int);
+extern int _IO_file_underflow_mmap (FILE *);
+extern int _IO_file_underflow_maybe_mmap (FILE *);
+extern int _IO_file_overflow (FILE *, int);
libc_hidden_proto (_IO_file_overflow)
#define _IO_file_is_open(__fp) ((__fp)->_fileno != -1)
-extern void _IO_file_init (struct _IO_FILE_plus *) __THROW;
-libc_hidden_proto (_IO_file_init)
-extern _IO_FILE* _IO_file_attach (_IO_FILE *, int);
+extern FILE* _IO_file_attach (FILE *, int);
libc_hidden_proto (_IO_file_attach)
-extern _IO_FILE* _IO_file_open (_IO_FILE *, const char *, int, int, int, int);
+extern FILE* _IO_file_open (FILE *, const char *, int, int, int, int);
libc_hidden_proto (_IO_file_open)
-extern _IO_FILE* _IO_file_fopen (_IO_FILE *, const char *, const char *, int);
+extern FILE* _IO_file_fopen (FILE *, const char *, const char *, int);
libc_hidden_proto (_IO_file_fopen)
-extern _IO_ssize_t _IO_file_write (_IO_FILE *, const void *, _IO_ssize_t);
-extern _IO_ssize_t _IO_file_read (_IO_FILE *, void *, _IO_ssize_t);
+extern ssize_t _IO_file_write (FILE *, const void *, ssize_t);
+extern ssize_t _IO_file_read (FILE *, void *, ssize_t);
libc_hidden_proto (_IO_file_read)
-extern int _IO_file_sync (_IO_FILE *);
+extern int _IO_file_sync (FILE *);
libc_hidden_proto (_IO_file_sync)
-extern int _IO_file_close_it (_IO_FILE *);
+extern int _IO_file_close_it (FILE *);
libc_hidden_proto (_IO_file_close_it)
-extern _IO_off64_t _IO_file_seek (_IO_FILE *, _IO_off64_t, int) __THROW;
+extern off64_t _IO_file_seek (FILE *, off64_t, int) __THROW;
libc_hidden_proto (_IO_file_seek)
-extern void _IO_file_finish (_IO_FILE *, int);
+extern void _IO_file_finish (FILE *, int);
libc_hidden_proto (_IO_file_finish)
-extern _IO_FILE* _IO_new_file_attach (_IO_FILE *, int);
-extern int _IO_new_file_close_it (_IO_FILE *);
-extern void _IO_new_file_finish (_IO_FILE *, int);
-extern _IO_FILE* _IO_new_file_fopen (_IO_FILE *, const char *, const char *,
+extern FILE* _IO_new_file_attach (FILE *, int);
+extern int _IO_new_file_close_it (FILE *);
+extern void _IO_new_file_finish (FILE *, int);
+extern FILE* _IO_new_file_fopen (FILE *, const char *, const char *,
int);
-extern void _IO_no_init (_IO_FILE *, int, int, struct _IO_wide_data *,
+extern void _IO_no_init (FILE *, int, int, struct _IO_wide_data *,
const struct _IO_jump_t *) __THROW;
-extern void _IO_new_file_init (struct _IO_FILE_plus *) __THROW;
-extern _IO_FILE* _IO_new_file_setbuf (_IO_FILE *, char *, _IO_ssize_t);
-extern _IO_FILE* _IO_file_setbuf_mmap (_IO_FILE *, char *, _IO_ssize_t);
-extern int _IO_new_file_sync (_IO_FILE *);
-extern int _IO_new_file_underflow (_IO_FILE *);
-extern int _IO_new_file_overflow (_IO_FILE *, int);
-extern _IO_off64_t _IO_new_file_seekoff (_IO_FILE *, _IO_off64_t, int, int);
-extern _IO_ssize_t _IO_new_file_write (_IO_FILE *, const void *, _IO_ssize_t);
-extern _IO_size_t _IO_new_file_xsputn (_IO_FILE *, const void *, _IO_size_t);
-
-extern _IO_FILE* _IO_old_file_setbuf (_IO_FILE *, char *, _IO_ssize_t);
-extern _IO_off64_t _IO_old_file_seekoff (_IO_FILE *, _IO_off64_t, int, int);
-extern _IO_size_t _IO_old_file_xsputn (_IO_FILE *, const void *, _IO_size_t);
-extern int _IO_old_file_underflow (_IO_FILE *);
-extern int _IO_old_file_overflow (_IO_FILE *, int);
-extern void _IO_old_file_init (struct _IO_FILE_plus *) __THROW;
-extern _IO_FILE* _IO_old_file_attach (_IO_FILE *, int);
-extern _IO_FILE* _IO_old_file_fopen (_IO_FILE *, const char *, const char *);
-extern _IO_ssize_t _IO_old_file_write (_IO_FILE *, const void *, _IO_ssize_t);
-extern int _IO_old_file_sync (_IO_FILE *);
-extern int _IO_old_file_close_it (_IO_FILE *);
-extern void _IO_old_file_finish (_IO_FILE *, int);
-
-extern int _IO_wfile_doallocate (_IO_FILE *) __THROW;
-extern _IO_size_t _IO_wfile_xsputn (_IO_FILE *, const void *, _IO_size_t);
+extern void _IO_new_file_init_internal (struct _IO_FILE_plus *)
+ __THROW attribute_hidden;
+extern FILE* _IO_new_file_setbuf (FILE *, char *, ssize_t);
+extern FILE* _IO_file_setbuf_mmap (FILE *, char *, ssize_t);
+extern int _IO_new_file_sync (FILE *);
+extern int _IO_new_file_underflow (FILE *);
+extern int _IO_new_file_overflow (FILE *, int);
+extern off64_t _IO_new_file_seekoff (FILE *, off64_t, int, int);
+extern ssize_t _IO_new_file_write (FILE *, const void *, ssize_t);
+extern size_t _IO_new_file_xsputn (FILE *, const void *, size_t);
+
+extern FILE* _IO_old_file_setbuf (FILE *, char *, ssize_t);
+extern off64_t _IO_old_file_seekoff (FILE *, off64_t, int, int);
+extern size_t _IO_old_file_xsputn (FILE *, const void *, size_t);
+extern int _IO_old_file_underflow (FILE *);
+extern int _IO_old_file_overflow (FILE *, int);
+extern void _IO_old_file_init_internal (struct _IO_FILE_plus *)
+ __THROW attribute_hidden;
+extern FILE* _IO_old_file_attach (FILE *, int);
+extern FILE* _IO_old_file_fopen (FILE *, const char *, const char *);
+extern ssize_t _IO_old_file_write (FILE *, const void *, ssize_t);
+extern int _IO_old_file_sync (FILE *);
+extern int _IO_old_file_close_it (FILE *);
+extern void _IO_old_file_finish (FILE *, int);
+
+extern int _IO_wfile_doallocate (FILE *) __THROW;
+extern size_t _IO_wfile_xsputn (FILE *, const void *, size_t);
libc_hidden_proto (_IO_wfile_xsputn)
-extern _IO_FILE* _IO_wfile_setbuf (_IO_FILE *, wchar_t *, _IO_ssize_t);
-extern wint_t _IO_wfile_sync (_IO_FILE *);
+extern FILE* _IO_wfile_setbuf (FILE *, wchar_t *, ssize_t);
+extern wint_t _IO_wfile_sync (FILE *);
libc_hidden_proto (_IO_wfile_sync)
-extern wint_t _IO_wfile_underflow (_IO_FILE *);
+extern wint_t _IO_wfile_underflow (FILE *);
libc_hidden_proto (_IO_wfile_underflow)
-extern wint_t _IO_wfile_overflow (_IO_FILE *, wint_t);
+extern wint_t _IO_wfile_overflow (FILE *, wint_t);
libc_hidden_proto (_IO_wfile_overflow)
-extern _IO_off64_t _IO_wfile_seekoff (_IO_FILE *, _IO_off64_t, int, int);
+extern off64_t _IO_wfile_seekoff (FILE *, off64_t, int, int);
libc_hidden_proto (_IO_wfile_seekoff)
/* Jumptable functions for proc_files. */
-extern _IO_FILE* _IO_proc_open (_IO_FILE *, const char *, const char *)
+extern FILE* _IO_proc_open (FILE *, const char *, const char *)
__THROW;
-extern _IO_FILE* _IO_new_proc_open (_IO_FILE *, const char *, const char *)
+extern FILE* _IO_new_proc_open (FILE *, const char *, const char *)
__THROW;
-extern _IO_FILE* _IO_old_proc_open (_IO_FILE *, const char *, const char *);
-extern int _IO_proc_close (_IO_FILE *) __THROW;
-extern int _IO_new_proc_close (_IO_FILE *) __THROW;
-extern int _IO_old_proc_close (_IO_FILE *);
+extern FILE* _IO_old_proc_open (FILE *, const char *, const char *);
+extern int _IO_proc_close (FILE *) __THROW;
+extern int _IO_new_proc_close (FILE *) __THROW;
+extern int _IO_old_proc_close (FILE *);
/* Jumptable functions for strfiles. */
-extern int _IO_str_underflow (_IO_FILE *) __THROW;
+extern int _IO_str_underflow (FILE *) __THROW;
libc_hidden_proto (_IO_str_underflow)
-extern int _IO_str_overflow (_IO_FILE *, int) __THROW;
+extern int _IO_str_overflow (FILE *, int) __THROW;
libc_hidden_proto (_IO_str_overflow)
-extern int _IO_str_pbackfail (_IO_FILE *, int) __THROW;
+extern int _IO_str_pbackfail (FILE *, int) __THROW;
libc_hidden_proto (_IO_str_pbackfail)
-extern _IO_off64_t _IO_str_seekoff (_IO_FILE *, _IO_off64_t, int, int) __THROW;
+extern off64_t _IO_str_seekoff (FILE *, off64_t, int, int) __THROW;
libc_hidden_proto (_IO_str_seekoff)
-extern void _IO_str_finish (_IO_FILE *, int) __THROW;
+extern void _IO_str_finish (FILE *, int) __THROW;
/* Other strfile functions */
struct _IO_strfile_;
-extern void _IO_str_init_static (struct _IO_strfile_ *, char *, int, char *)
- __THROW;
-extern void _IO_str_init_readonly (struct _IO_strfile_ *, const char *, int)
- __THROW;
-extern _IO_ssize_t _IO_str_count (_IO_FILE *) __THROW;
+extern ssize_t _IO_str_count (FILE *) __THROW;
/* And the wide character versions. */
-extern void _IO_wstr_init_static (_IO_FILE *, wchar_t *, _IO_size_t, wchar_t *)
+extern void _IO_wstr_init_static (FILE *, wchar_t *, size_t, wchar_t *)
__THROW;
-extern _IO_ssize_t _IO_wstr_count (_IO_FILE *) __THROW;
-extern _IO_wint_t _IO_wstr_overflow (_IO_FILE *, _IO_wint_t) __THROW;
-extern _IO_wint_t _IO_wstr_underflow (_IO_FILE *) __THROW;
-extern _IO_off64_t _IO_wstr_seekoff (_IO_FILE *, _IO_off64_t, int, int)
+extern ssize_t _IO_wstr_count (FILE *) __THROW;
+extern wint_t _IO_wstr_overflow (FILE *, wint_t) __THROW;
+extern wint_t _IO_wstr_underflow (FILE *) __THROW;
+extern off64_t _IO_wstr_seekoff (FILE *, off64_t, int, int)
__THROW;
-extern _IO_wint_t _IO_wstr_pbackfail (_IO_FILE *, _IO_wint_t) __THROW;
-extern void _IO_wstr_finish (_IO_FILE *, int) __THROW;
+extern wint_t _IO_wstr_pbackfail (FILE *, wint_t) __THROW;
+extern void _IO_wstr_finish (FILE *, int) __THROW;
extern int _IO_vasprintf (char **result_ptr, const char *format,
- _IO_va_list args) __THROW;
-extern int _IO_vdprintf (int d, const char *format, _IO_va_list arg);
-extern int _IO_vsnprintf (char *string, _IO_size_t maxlen,
- const char *format, _IO_va_list args) __THROW;
+ va_list args) __THROW;
+extern int _IO_vdprintf (int d, const char *format, va_list arg);
+extern int _IO_vsnprintf (char *string, size_t maxlen,
+ const char *format, va_list args) __THROW;
-extern _IO_size_t _IO_getline (_IO_FILE *,char *, _IO_size_t, int, int);
+extern size_t _IO_getline (FILE *,char *, size_t, int, int);
libc_hidden_proto (_IO_getline)
-extern _IO_size_t _IO_getline_info (_IO_FILE *,char *, _IO_size_t,
+extern size_t _IO_getline_info (FILE *,char *, size_t,
int, int, int *);
libc_hidden_proto (_IO_getline_info)
-extern _IO_ssize_t _IO_getdelim (char **, _IO_size_t *, int, _IO_FILE *);
-extern _IO_size_t _IO_getwline (_IO_FILE *,wchar_t *, _IO_size_t, wint_t, int);
-extern _IO_size_t _IO_getwline_info (_IO_FILE *,wchar_t *, _IO_size_t,
+extern ssize_t _IO_getdelim (char **, size_t *, int, FILE *);
+extern size_t _IO_getwline (FILE *,wchar_t *, size_t, wint_t, int);
+extern size_t _IO_getwline_info (FILE *,wchar_t *, size_t,
wint_t, int, wint_t *);
extern struct _IO_FILE_plus *_IO_list_all;
@@ -712,28 +680,12 @@ libc_hidden_proto (_IO_list_all)
extern void (*_IO_cleanup_registration_needed) (void);
extern void _IO_str_init_static_internal (struct _IO_strfile_ *, char *,
- _IO_size_t, char *) __THROW;
-extern _IO_off64_t _IO_seekoff_unlocked (_IO_FILE *, _IO_off64_t, int, int)
+ size_t, char *) __THROW;
+extern off64_t _IO_seekoff_unlocked (FILE *, off64_t, int, int)
attribute_hidden;
-extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE *, _IO_off64_t, int)
+extern off64_t _IO_seekpos_unlocked (FILE *, off64_t, int)
attribute_hidden;
-#ifndef EOF
-# define EOF (-1)
-#endif
-#ifndef NULL
-# if defined __GNUG__ && \
- (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
-# define NULL (__null)
-# else
-# if !defined(__cplusplus)
-# define NULL ((void*)0)
-# else
-# define NULL (0)
-# endif
-# endif
-#endif
-
#if _G_HAVE_MMAP
# include <unistd.h>
@@ -752,126 +704,66 @@ extern _IO_off64_t _IO_seekpos_unlocked (_IO_FILE *, _IO_off64_t, int)
#endif /* _G_HAVE_MMAP */
-#if _G_HAVE_MMAP
-
-# ifdef _LIBC
-/* When using this code in the GNU libc we must not pollute the name space. */
-# define mmap __mmap
-# define munmap __munmap
-# define ftruncate __ftruncate
-# endif
-#endif /* _G_HAVE_MMAP */
-
-#ifndef OS_FSTAT
-# define OS_FSTAT fstat
-#endif
-extern int _IO_vscanf (const char *, _IO_va_list) __THROW;
-
-/* _IO_pos_BAD is an _IO_off64_t value indicating error, unknown, or EOF. */
-#ifndef _IO_pos_BAD
-# define _IO_pos_BAD ((_IO_off64_t) -1)
-#endif
-/* _IO_pos_adjust adjust an _IO_off64_t by some number of bytes. */
-#ifndef _IO_pos_adjust
-# define _IO_pos_adjust(pos, delta) ((pos) += (delta))
-#endif
-/* _IO_pos_0 is an _IO_off64_t value indicating beginning of file. */
-#ifndef _IO_pos_0
-# define _IO_pos_0 ((_IO_off64_t) 0)
-#endif
-
-#ifdef __cplusplus
-}
-#endif
+extern int _IO_vscanf (const char *, va_list) __THROW;
#ifdef _IO_MTSAFE_IO
/* check following! */
# ifdef _IO_USE_OLD_IO_FILE
# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock }
# else
-# if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
+# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
NULL, WDP, 0 }
-# else
-# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
- { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
- 0, _IO_pos_BAD, 0, 0, { 0 }, &_IO_stdfile_##FD##_lock, _IO_pos_BAD,\
- 0 }
-# endif
# endif
#else
# ifdef _IO_USE_OLD_IO_FILE
# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
0, _IO_pos_BAD }
# else
-# if defined _LIBC || defined _GLIBCPP_USE_WCHAR_T
-# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
+# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
{ _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (FILE *) CHAIN, FD, \
0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
NULL, WDP, 0 }
-# else
-# define FILEBUF_LITERAL(CHAIN, FLAGS, FD, WDP) \
- { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (_IO_FILE *) CHAIN, FD, \
- 0, _IO_pos_BAD, 0, 0, { 0 }, 0, _IO_pos_BAD, \
- 0 }
-# endif
# endif
#endif
-#define _IO_va_start(args, last) va_start(args, last)
-
extern struct _IO_fake_stdiobuf _IO_stdin_buf, _IO_stdout_buf, _IO_stderr_buf;
-#if 1
-# define COERCE_FILE(FILE) /* Nothing */
-#else
-/* This is part of the kludge for binary compatibility with old stdio. */
-# define COERCE_FILE(FILE) \
- (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) == _OLD_MAGIC_MASK \
- && (FILE) = *(FILE**)&((int*)fp)[1])
-#endif
-
-#ifdef EINVAL
-# define MAYBE_SET_EINVAL __set_errno (EINVAL)
-#else
-# define MAYBE_SET_EINVAL /* nothing */
-#endif
-
#ifdef IO_DEBUG
-# define CHECK_FILE(FILE, RET) \
- if ((FILE) == NULL) { MAYBE_SET_EINVAL; return RET; } \
- else { COERCE_FILE(FILE); \
- if (((FILE)->_IO_file_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
- { MAYBE_SET_EINVAL; return RET; }}
+# define CHECK_FILE(FILE, RET) do { \
+ if ((FILE) == NULL || \
+ ((FILE)->_flags & _IO_MAGIC_MASK) != _IO_MAGIC) \
+ { \
+ __set_errno (EINVAL); \
+ return RET; \
+ } \
+ } while (0)
#else
-# define CHECK_FILE(FILE, RET) COERCE_FILE (FILE)
+# define CHECK_FILE(FILE, RET) do { } while (0)
#endif
static inline void
__attribute__ ((__always_inline__))
-_IO_acquire_lock_fct (_IO_FILE **p)
+_IO_acquire_lock_fct (FILE **p)
{
- _IO_FILE *fp = *p;
+ FILE *fp = *p;
if ((fp->_flags & _IO_USER_LOCK) == 0)
_IO_funlockfile (fp);
}
static inline void
__attribute__ ((__always_inline__))
-_IO_acquire_lock_clear_flags2_fct (_IO_FILE **p)
+_IO_acquire_lock_clear_flags2_fct (FILE **p)
{
- _IO_FILE *fp = *p;
+ FILE *fp = *p;
fp->_flags2 &= ~(_IO_FLAGS2_FORTIFY | _IO_FLAGS2_SCANF_STD);
if ((fp->_flags & _IO_USER_LOCK) == 0)
_IO_funlockfile (fp);
@@ -880,13 +772,71 @@ _IO_acquire_lock_clear_flags2_fct (_IO_FILE **p)
#if !defined _IO_MTSAFE_IO && IS_IN (libc)
# define _IO_acquire_lock(_fp) \
do { \
- _IO_FILE *_IO_acquire_lock_file = NULL
+ FILE *_IO_acquire_lock_file = NULL
# define _IO_acquire_lock_clear_flags2(_fp) \
do { \
- _IO_FILE *_IO_acquire_lock_file = (_fp)
+ FILE *_IO_acquire_lock_file = (_fp)
# define _IO_release_lock(_fp) \
if (_IO_acquire_lock_file != NULL) \
_IO_acquire_lock_file->_flags2 &= ~(_IO_FLAGS2_FORTIFY \
| _IO_FLAGS2_SCANF_STD); \
} while (0)
#endif
+
+/* Collect all vtables in a special section for vtable verification.
+ These symbols cover the extent of this section. */
+symbol_set_declare (__libc_IO_vtables)
+
+/* libio vtables need to carry this attribute so that they pass
+ validation. */
+#define libio_vtable __attribute__ ((section ("__libc_IO_vtables")))
+
+#ifdef SHARED
+/* If equal to &_IO_vtable_check (with pointer guard protection),
+ unknown vtable pointers are valid. This function pointer is solely
+ used as a flag. */
+extern void (*IO_accept_foreign_vtables) (void) attribute_hidden;
+
+/* Assigns the passed function pointer (either NULL or
+ &_IO_vtable_check) to IO_accept_foreign_vtables. */
+static inline void
+IO_set_accept_foreign_vtables (void (*flag) (void))
+{
+#ifdef PTR_MANGLE
+ PTR_MANGLE (flag);
+#endif
+ atomic_store_relaxed (&IO_accept_foreign_vtables, flag);
+}
+
+#else /* !SHARED */
+
+/* The statically-linked version does nothing. */
+static inline void
+IO_set_accept_foreign_vtables (void (*flag) (void))
+{
+}
+
+#endif
+
+/* Check if unknown vtable pointers are permitted; otherwise,
+ terminate the process. */
+void _IO_vtable_check (void) attribute_hidden;
+
+/* Perform vtable pointer validation. If validation fails, terminate
+ the process. */
+static inline const struct _IO_jump_t *
+IO_validate_vtable (const struct _IO_jump_t *vtable)
+{
+ /* Fast path: The vtable pointer is within the __libc_IO_vtables
+ section. */
+ uintptr_t section_length = __stop___libc_IO_vtables - __start___libc_IO_vtables;
+ uintptr_t ptr = (uintptr_t) vtable;
+ uintptr_t offset = ptr - (uintptr_t) __start___libc_IO_vtables;
+ if (__glibc_unlikely (offset >= section_length))
+ /* The vtable pointer is not in the expected section. Use the
+ slow path, which will terminate the process if necessary. */
+ _IO_vtable_check ();
+ return vtable;
+}
+
+#endif /* libioP.h. */