diff options
Diffstat (limited to 'libio/libioP.h')
-rw-r--r-- | libio/libioP.h | 610 |
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. */ |