| /* |
| Copyright (C) 1993 Free Software Foundation |
| |
| 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 <errno.h> |
| #ifndef errno |
| extern int errno; |
| #endif |
| |
| #include "iolibio.h" |
| |
| #if defined (__STDC__) || defined (_AIX) || (defined (__mips) && defined (_SYSTYPE_SVR4)) || defined(__cplusplus) |
| /* All known AIX compilers implement these things (but don't always |
| define __STDC__). The RISC/OS MIPS compiler defines these things |
| in SVR4 mode, but does not define __STDC__. */ |
| |
| #define AND , |
| #define DEFUN(name, arglist, args) name(args) |
| #define DEFUN_VOID(name) name(void) |
| |
| #else /* Not ANSI C. */ |
| |
| #define AND ; |
| #ifndef const /* some systems define it in header files for non-ansi mode */ |
| #define const |
| #endif |
| #define DEFUN(name, arglist, args) name arglist args; |
| #define DEFUN_VOID(name) name() |
| #endif /* ANSI C. */ |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #define _IO_seek_set 0 |
| #define _IO_seek_cur 1 |
| #define _IO_seek_end 2 |
| |
| /* THE JUMPTABLE FUNCTIONS. |
| |
| * The _IO_FILE type is used to implement the FILE type in GNU libc, |
| * as well as the streambuf class in GNU iostreams for C++. |
| * These are all the same, just used differently. |
| * An _IO_FILE (or FILE) object is allows followed by a pointer to |
| * a jump table (of pointers to functions). The pointer is accessed |
| * with the _IO_JUMPS macro. The jump table has a 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 steambuf object is |
| * coerced to an (_IO_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 functiuon table for C++ streambuf. |
| * |
| * The entries in the _IO_JUMPS function table (and hence also the |
| * virtual functions of a streambuf) are described below. |
| * The first parameter of each function entry is the _IO_FILE/streambuf |
| * object being acted on (i.e. the 'this' parameter). |
| */ |
| |
| #define _IO_JUMPS(THIS) ((struct _IO_FILE_plus*)(THIS))->vtable |
| #ifdef _G_USING_THUNKS |
| #define JUMP_FIELD(TYPE, NAME) TYPE NAME |
| #define JUMP0(FUNC, THIS) _IO_JUMPS(THIS)->FUNC(THIS) |
| #define JUMP1(FUNC, THIS, X1) _IO_JUMPS(THIS)->FUNC(THIS, X1) |
| #define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS(THIS)->FUNC(THIS, X1, X2) |
| #define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS(THIS)->FUNC(THIS, X1,X2, X3) |
| #define JUMP_INIT(NAME, VALUE) VALUE |
| #define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0), JUMP_INIT(dummy2, 0) |
| #else |
| /* These macros will change when we re-implement vtables to use "thunks"! */ |
| #define JUMP_FIELD(TYPE, NAME) struct { short delta1, delta2; TYPE pfn; } NAME |
| #define JUMP0(FUNC, THIS) _IO_JUMPS(THIS)->FUNC.pfn(THIS) |
| #define JUMP1(FUNC, THIS, X1) _IO_JUMPS(THIS)->FUNC.pfn(THIS, X1) |
| #define JUMP2(FUNC, THIS, X1, X2) _IO_JUMPS(THIS)->FUNC.pfn(THIS, X1, X2) |
| #define JUMP3(FUNC, THIS, X1,X2,X3) _IO_JUMPS(THIS)->FUNC.pfn(THIS, X1,X2, X3) |
| #define JUMP_INIT(NAME, VALUE) {0, 0, VALUE} |
| #define JUMP_INIT_DUMMY JUMP_INIT(dummy, 0) |
| #endif |
| |
| /* 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) __P((_IO_FILE*)); /* finalize */ |
| #define _IO_FINISH(FP) JUMP0(__finish, FP) |
| |
| /* 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) __P((_IO_FILE*, int)); |
| #define _IO_OVERFLOW(FP, CH) JUMP1(__overflow, FP, CH) |
| |
| /* The 'underflow' hook tries to fills the get buffer. |
| It returns the next character (as an unsigned char) or EOF. The next |
| character remains in the get buffer, and the get postion is not changed. |
| It matches the streambuf::underflow virtual function. */ |
| typedef int (*_IO_underflow_t) __P((_IO_FILE*)); |
| #define _IO_UNDERFLOW(FP) JUMP0(__underflow, FP) |
| |
| /* The 'uflow' hook returns the next character in the input stream |
| (cast to unsigned char), and increments the read position; |
| EOF is returned on failure. |
| It matches the streambuf::uflow virtual function, which is not in the |
| cfront implementation, but was added to C++ by the ANSI/ISO committee. */ |
| #define _IO_UFLOW(FP) JUMP0(__uflow, FP) |
| |
| /* The 'pbackfail' hook handles backing up. |
| It matches the streambuf::pbackfail virtual function. */ |
| typedef int (*_IO_pbackfail_t) __P((_IO_FILE*, int)); |
| #define _IO_PBACKFAIL(FP, CH) JUMP1(__pbackfail, FP, CH) |
| |
| /* The 'xsputn' hook writes upto N characters from buffer DATA. |
| Returns the number of character actually written. |
| It matches the streambuf::xsputn virtual function. */ |
| typedef _IO_size_t (*_IO_xsputn_t) |
| __P((_IO_FILE *FP, const void *DATA, _IO_size_t N)); |
| #define _IO_XSPUTN(FP, DATA, N) JUMP2(__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) __P((_IO_FILE*FP, void*DATA, _IO_size_t N)); |
| #define _IO_XSGETN(FP, DATA, N) JUMP2(__xsgetn, FP, DATA, N) |
| |
| /* The 'seekoff' hook moves the stream position to a new position |
| relative to the start of the file (if DIR==0), the current position |
| (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_fpos_t (*_IO_seekoff_t) |
| __P((_IO_FILE* FP, _IO_off_t OFF, int DIR, int MODE)); |
| #define _IO_SEEKOFF(FP, OFF, DIR, MODE) JUMP3(__seekoff, FP, OFF, DIR, MODE) |
| |
| /* The 'seekpos' hook also moves the stream position, |
| but to an absolute position given by a fpos_t (seekpos). |
| 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_fpos_t (*_IO_seekpos_t) __P((_IO_FILE*, _IO_fpos_t, int)); |
| #define _IO_SEEKPOS(FP, POS, FLAGS) JUMP2(__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) __P((_IO_FILE*, char *, _IO_ssize_t)); |
| #define _IO_SETBUF(FP, BUFFER, LENGTH) JUMP2(__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) __P((_IO_FILE*)); |
| #define _IO_SYNC(FP) JUMP0(__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) __P((_IO_FILE*)); |
| #define _IO_DOALLOCATE(FP) JUMP0(__doallocate, FP) |
| |
| /* The following four hooks (sysread, syswrite, sysclose, sysseek, and |
| sysstat) are low-level hooks specific to this implementation. |
| There is no correspondance 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* |
| parameter is used instead of a 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 |
| ones (underflow, overflow etc) is that you can leave all the buffering |
| higher-level functions. */ |
| |
| /* The 'sysread' hook is used to read data from the external file into |
| an existing buffer. It generalizes the Unix read(2) function. |
| It matches the streambuf::sys_read virtual function, which is |
| specific to this implementaion. */ |
| typedef _IO_ssize_t (*_IO_read_t) __P((_IO_FILE*, void*, _IO_ssize_t)); |
| #define _IO_SYSREAD(FP, DATA, LEN) JUMP2(__read, FP, DATA, LEN) |
| |
| /* The 'syswrite' hook is used to write data from an existing buffer |
| to an external file. It generalizes the Unix write(2) function. |
| It matches the streambuf::sys_write virtual function, which is |
| specific to this implementaion. */ |
| typedef _IO_ssize_t (*_IO_write_t) __P((_IO_FILE*,const void*,_IO_ssize_t)); |
| #define _IO_SYSWRITE(FP, DATA, LEN) JUMP2(__write, FP, DATA, LEN) |
| |
| /* The 'sysseek' hook is used to re-position an external file. |
| It generalizes the Unix lseek(2) function. |
| It matches the streambuf::sys_seek virtual function, which is |
| specific to this implementaion. */ |
| typedef _IO_fpos_t (*_IO_seek_t) __P((_IO_FILE*, _IO_off_t, int)); |
| #define _IO_SYSSEEK(FP, OFFSET, MODE) JUMP2(__seek, FP, OFFSET, MODE) |
| |
| /* The 'sysclose' hook is used to finalize (close, finish up) an |
| 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) __P((_IO_FILE*)); /* finalize */ |
| #define _IO_SYSCLOSE(FP) JUMP0(__close, FP) |
| |
| /* The 'sysstat' hook is used to get information about an external file |
| 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 implementaion. */ |
| typedef int (*_IO_stat_t) __P((_IO_FILE*, void*)); |
| #define _IO_SYSSTAT(FP, BUF) JUMP1(__stat, FP, BUF) |
| |
| |
| #define _IO_CHAR_TYPE char /* unsigned char ? */ |
| #define _IO_INT_TYPE int |
| |
| struct _IO_jump_t { |
| JUMP_FIELD(_G_size_t, __dummy); |
| #ifdef _G_USING_THUNKS |
| JUMP_FIELD(_G_size_t, __dummy2); |
| #endif |
| JUMP_FIELD(_IO_finish_t, __finish); |
| JUMP_FIELD(_IO_overflow_t, __overflow); |
| JUMP_FIELD(_IO_underflow_t, __underflow); |
| JUMP_FIELD(_IO_underflow_t, __uflow); |
| JUMP_FIELD(_IO_pbackfail_t, __pbackfail); |
| /* showmany */ |
| JUMP_FIELD(_IO_xsputn_t, __xsputn); |
| JUMP_FIELD(_IO_xsgetn_t, __xsgetn); |
| JUMP_FIELD(_IO_seekoff_t, __seekoff); |
| JUMP_FIELD(_IO_seekpos_t, __seekpos); |
| JUMP_FIELD(_IO_setbuf_t, __setbuf); |
| JUMP_FIELD(_IO_sync_t, __sync); |
| JUMP_FIELD(_IO_doallocate_t, __doallocate); |
| JUMP_FIELD(_IO_read_t, __read); |
| JUMP_FIELD(_IO_write_t, __write); |
| JUMP_FIELD(_IO_seek_t, __seek); |
| JUMP_FIELD(_IO_close_t, __close); |
| JUMP_FIELD(_IO_stat_t, __stat); |
| #if 0 |
| get_column; |
| set_column; |
| #endif |
| }; |
| |
| /* We always allocate an extra word following an _IO_FILE. |
| This contains a pointer to the function jump table used. |
| This is for compatibility with C++ streambuf; the word can |
| be used to smash to a pointer to a virtual function table. */ |
| |
| struct _IO_FILE_plus { |
| _IO_FILE file; |
| const struct _IO_jump_t *vtable; |
| }; |
| |
| /* Generic functions */ |
| |
| extern int _IO_switch_to_get_mode __P((_IO_FILE*)); |
| extern void _IO_init __P((_IO_FILE*, int)); |
| extern int _IO_sputbackc __P((_IO_FILE*, int)); |
| extern int _IO_sungetc __P((_IO_FILE*)); |
| extern void _IO_un_link __P((_IO_FILE*)); |
| extern void _IO_link_in __P((_IO_FILE *)); |
| extern void _IO_doallocbuf __P((_IO_FILE*)); |
| extern void _IO_unsave_markers __P((_IO_FILE*)); |
| extern void _IO_setb __P((_IO_FILE*, char*, char*, int)); |
| extern unsigned _IO_adjust_column __P((unsigned, const char *, int)); |
| #define _IO_sputn(__fp, __s, __n) _IO_XSPUTN(__fp, __s, __n) |
| |
| /* Marker-related function. */ |
| |
| extern void _IO_init_marker __P((struct _IO_marker *, _IO_FILE *)); |
| extern void _IO_remove_marker __P((struct _IO_marker*)); |
| extern int _IO_marker_difference __P((struct _IO_marker *, struct _IO_marker *)); |
| extern int _IO_marker_delta __P((struct _IO_marker *)); |
| extern int _IO_seekmark __P((_IO_FILE *, struct _IO_marker *, int)); |
| |
| /* Default jumptable functions. */ |
| |
| extern int _IO_default_underflow __P((_IO_FILE*)); |
| extern int _IO_default_uflow __P((_IO_FILE*)); |
| extern int _IO_default_doallocate __P((_IO_FILE*)); |
| extern void _IO_default_finish __P((_IO_FILE *)); |
| extern int _IO_default_pbackfail __P((_IO_FILE*, int)); |
| extern _IO_FILE* _IO_default_setbuf __P((_IO_FILE *, char*, _IO_ssize_t)); |
| extern _IO_size_t _IO_default_xsputn __P((_IO_FILE *, const void*, _IO_size_t)); |
| extern _IO_size_t _IO_default_xsgetn __P((_IO_FILE *, void*, _IO_size_t)); |
| extern _IO_fpos_t _IO_default_seekoff __P((_IO_FILE*, _IO_off_t, int, int)); |
| extern _IO_fpos_t _IO_default_seekpos __P((_IO_FILE*, _IO_fpos_t, int)); |
| extern _IO_ssize_t _IO_default_write __P((_IO_FILE*,const void*,_IO_ssize_t)); |
| extern _IO_ssize_t _IO_default_read __P((_IO_FILE*, void*, _IO_ssize_t)); |
| extern int _IO_default_stat __P((_IO_FILE*, void*)); |
| extern _IO_fpos_t _IO_default_seek __P((_IO_FILE*, _IO_off_t, int)); |
| extern int _IO_default_sync __P((_IO_FILE*)); |
| #define _IO_default_close ((_IO_close_t)_IO_default_sync) |
| |
| extern struct _IO_jump_t _IO_file_jumps; |
| extern struct _IO_jump_t _IO_streambuf_jumps; |
| extern struct _IO_jump_t _IO_proc_jumps; |
| extern struct _IO_jump_t _IO_str_jumps; |
| extern int _IO_do_write __P((_IO_FILE*, const char*, _IO_size_t)); |
| extern int _IO_flush_all __P((void)); |
| extern void _IO_cleanup __P((void)); |
| extern void _IO_flush_all_linebuffered __P((void)); |
| |
| #define _IO_do_flush(_f) \ |
| _IO_do_write(_f, (_f)->_IO_write_base, \ |
| (_f)->_IO_write_ptr-(_f)->_IO_write_base) |
| #define _IO_in_put_mode(_fp) ((_fp)->_flags & _IO_CURRENTLY_PUTTING) |
| #define _IO_mask_flags(fp, f, mask) \ |
| ((fp)->_flags = ((fp)->_flags & ~(mask)) | ((f) & (mask))) |
| #define _IO_setg(fp, eb, g, eg) ((fp)->_IO_read_base = (eb),\ |
| (fp)->_IO_read_ptr = (g), (fp)->_IO_read_end = (eg)) |
| #define _IO_setp(__fp, __p, __ep) \ |
| ((__fp)->_IO_write_base = (__fp)->_IO_write_ptr = __p, (__fp)->_IO_write_end = (__ep)) |
| #define _IO_have_backup(fp) ((fp)->_IO_save_base != NULL) |
| #define _IO_in_backup(fp) ((fp)->_flags & _IO_IN_BACKUP) |
| #define _IO_have_markers(fp) ((fp)->_markers != NULL) |
| #define _IO_blen(fp) ((fp)->_IO_buf_end - (fp)->_IO_buf_base) |
| |
| /* Jumptable functions for files. */ |
| |
| extern int _IO_file_doallocate __P((_IO_FILE*)); |
| extern _IO_FILE* _IO_file_setbuf __P((_IO_FILE *, char*, _IO_ssize_t)); |
| extern _IO_fpos_t _IO_file_seekoff __P((_IO_FILE*, _IO_off_t, int, int)); |
| extern _IO_size_t _IO_file_xsputn __P((_IO_FILE*,const void*,_IO_size_t)); |
| extern int _IO_file_stat __P((_IO_FILE*, void*)); |
| extern int _IO_file_close __P((_IO_FILE*)); |
| extern int _IO_file_underflow __P((_IO_FILE *)); |
| extern int _IO_file_overflow __P((_IO_FILE *, int)); |
| #define _IO_file_is_open(__fp) ((__fp)->_fileno >= 0) |
| extern void _IO_file_init __P((_IO_FILE*)); |
| extern _IO_FILE* _IO_file_fopen __P((_IO_FILE*, const char*, const char*)); |
| extern _IO_ssize_t _IO_file_write __P((_IO_FILE*,const void*,_IO_ssize_t)); |
| extern _IO_ssize_t _IO_file_read __P((_IO_FILE*, void*, _IO_ssize_t)); |
| extern int _IO_file_sync __P((_IO_FILE*)); |
| extern int _IO_file_close_it __P((_IO_FILE*)); |
| extern _IO_fpos_t _IO_file_seek __P((_IO_FILE *, _IO_off_t, int)); |
| extern void _IO_file_finish __P((_IO_FILE*)); |
| |
| /* Other file functions. */ |
| extern _IO_FILE* _IO_file_attach __P((_IO_FILE *, int)); |
| |
| /* Jumptable functions for proc_files. */ |
| extern _IO_FILE* _IO_proc_open __P((_IO_FILE*, const char*, const char *)); |
| extern int _IO_proc_close __P((_IO_FILE*)); |
| |
| /* Jumptable functions for strfiles. */ |
| extern int _IO_str_underflow __P((_IO_FILE*)); |
| extern int _IO_str_overflow __P((_IO_FILE *, int)); |
| extern int _IO_str_pbackfail __P((_IO_FILE*, int)); |
| extern _IO_fpos_t _IO_str_seekoff __P((_IO_FILE*,_IO_off_t,int,int)); |
| |
| /* Other strfile functions */ |
| extern void _IO_str_init_static __P((_IO_FILE *, char*, int, char*)); |
| extern void _IO_str_init_readonly __P((_IO_FILE *, const char*, int)); |
| extern _IO_ssize_t _IO_str_count __P ((_IO_FILE*)); |
| |
| extern _IO_size_t _IO_getline __P((_IO_FILE*,char*,_IO_size_t,int,int)); |
| extern _IO_ssize_t _IO_getdelim __P((char**, _IO_size_t*, int, _IO_FILE*)); |
| extern double _IO_strtod __P((const char *, char **)); |
| extern char * _IO_dtoa __P((double __d, int __mode, int __ndigits, |
| int *__decpt, int *__sign, char **__rve)); |
| extern int _IO_outfloat __P((double __value, _IO_FILE *__sb, int __type, |
| int __width, int __precision, int __flags, |
| int __sign_mode, int __fill)); |
| |
| extern _IO_FILE *_IO_list_all; |
| extern void (*_IO_cleanup_registration_needed) __P ((void)); |
| |
| #ifndef EOF |
| #define EOF (-1) |
| #endif |
| #ifndef NULL |
| #ifdef __GNUG__ |
| #define NULL (__null) |
| #else |
| #if !defined(__cplusplus) |
| #define NULL ((void*)0) |
| #else |
| #define NULL (0) |
| #endif |
| #endif |
| #endif |
| |
| #define FREE_BUF(_B) free(_B) |
| #define ALLOC_BUF(_S) (char*)malloc(_S) |
| |
| #ifndef OS_FSTAT |
| #define OS_FSTAT fstat |
| #endif |
| struct stat; |
| extern _IO_ssize_t _IO_read __P((int, void*, _IO_size_t)); |
| extern _IO_ssize_t _IO_write __P((int, const void*, _IO_size_t)); |
| extern _IO_off_t _IO_lseek __P((int, _IO_off_t, int)); |
| extern int _IO_close __P((int)); |
| extern int _IO_fstat __P((int, struct stat *)); |
| |
| /* Operations on _IO_fpos_t. |
| Normally, these are trivial, but we provide hooks for configurations |
| where an _IO_fpos_t is a struct. |
| Note that _IO_off_t must be an integral type. */ |
| |
| /* _IO_pos_BAD is an _IO_fpos_t value indicating error, unknown, or EOF. */ |
| #ifndef _IO_pos_BAD |
| #define _IO_pos_BAD ((_IO_fpos_t)(-1)) |
| #endif |
| /* _IO_pos_as_off converts an _IO_fpos_t value to an _IO_off_t value. */ |
| #ifndef _IO_pos_as_off |
| #define _IO_pos_as_off(__pos) ((_IO_off_t)(__pos)) |
| #endif |
| /* _IO_pos_adjust adjust an _IO_fpos_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_fpos_t value indicating beginning of file. */ |
| #ifndef _IO_pos_0 |
| #define _IO_pos_0 ((_IO_fpos_t)0) |
| #endif |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| /* check following! */ |
| #define FILEBUF_LITERAL(CHAIN, FLAGS, FD) \ |
| { _IO_MAGIC+_IO_LINKED+_IO_IS_FILEBUF+FLAGS, \ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, CHAIN, FD} |
| |
| /* VTABLE_LABEL defines NAME as of the CLASS class. |
| CNLENGTH is strlen(#CLASS). */ |
| #ifdef __GNUC__ |
| #if _G_VTABLE_LABEL_HAS_LENGTH |
| #define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \ |
| extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CNLENGTH #CLASS); |
| #else |
| #define VTABLE_LABEL(NAME, CLASS, CNLENGTH) \ |
| extern char NAME[] asm (_G_VTABLE_LABEL_PREFIX #CLASS); |
| #endif |
| #endif /* __GNUC__ */ |
| |
| #if !defined(builtinbuf_vtable) && defined(__cplusplus) |
| #ifdef __GNUC__ |
| VTABLE_LABEL(builtinbuf_vtable, builtinbuf, 10) |
| #else |
| #if _G_VTABLE_LABEL_HAS_LENGTH |
| #define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##10builtinbuf |
| #else |
| #define builtinbuf_vtable _G_VTABLE_LABEL_PREFIX_ID##builtinbuf |
| #endif |
| #endif |
| #endif /* !defined(builtinbuf_vtable) && defined(__cplusplus) */ |
| |
| #if defined(__STDC__) || defined(__cplusplus) |
| #define _IO_va_start(args, last) va_start(args, last) |
| #else |
| #define _IO_va_start(args, last) va_start(args) |
| #endif |
| |
| 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 errno = EINVAL |
| #else |
| #define MAYBE_SET_EINVAL /* nothing */ |
| #endif |
| |
| #ifdef 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) \ |
| { errno = EINVAL; return RET; }} |
| #else |
| #define CHECK_FILE(FILE,RET) \ |
| COERCE_FILE(FILE) |
| #endif |