From b3925d944ed94cc76bbcbb14a799ec9beeb8d1bf Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:25:44 +0200 Subject: Adding upstream version 1.21.4. Signed-off-by: Daniel Baumann --- lib/stdio-impl.h | 218 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 218 insertions(+) create mode 100644 lib/stdio-impl.h (limited to 'lib/stdio-impl.h') diff --git a/lib/stdio-impl.h b/lib/stdio-impl.h new file mode 100644 index 0000000..46608be --- /dev/null +++ b/lib/stdio-impl.h @@ -0,0 +1,218 @@ +/* Implementation details of FILE streams. + Copyright (C) 2007-2008, 2010-2023 Free Software Foundation, Inc. + + This file is free software: you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as + published by the Free Software Foundation; either version 2.1 of the + License, or (at your option) any later version. + + This file 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with this program. If not, see . */ + +/* Many stdio implementations have the same logic and therefore can share + the same implementation of stdio extension API, except that some fields + have different naming conventions, or their access requires some casts. */ + +/* Glibc 2.28 made _IO_UNBUFFERED and _IO_IN_BACKUP private. For now, work + around this problem by defining them ourselves. FIXME: Do not rely on glibc + internals. */ +#if defined _IO_EOF_SEEN +# if !defined _IO_UNBUFFERED +# define _IO_UNBUFFERED 0x2 +# endif +# if !defined _IO_IN_BACKUP +# define _IO_IN_BACKUP 0x100 +# endif +#endif + +/* BSD stdio derived implementations. */ + +#if defined __NetBSD__ /* NetBSD */ +/* Get __NetBSD_Version__. */ +# include +#endif + +#include /* For detecting Plan9. */ + +#if defined __sferror || defined __DragonFly__ || defined __ANDROID__ + /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Minix 3, Android */ + +# if defined __DragonFly__ /* DragonFly */ + /* See . */ +# define fp_ ((struct { struct __FILE_public pub; \ + struct { unsigned char *_base; int _size; } _bf; \ + void *cookie; \ + void *_close; \ + void *_read; \ + void *_seek; \ + void *_write; \ + struct { unsigned char *_base; int _size; } _ub; \ + int _ur; \ + unsigned char _ubuf[3]; \ + unsigned char _nbuf[1]; \ + struct { unsigned char *_base; int _size; } _lb; \ + int _blksize; \ + fpos_t _offset; \ + /* More fields, not relevant here. */ \ + } *) fp) + /* See . */ +# define _p pub._p +# define _flags pub._flags +# define _r pub._r +# define _w pub._w +# elif defined __ANDROID__ /* Android */ +# ifdef __LP64__ +# define _gl_flags_file_t int +# else +# define _gl_flags_file_t short +# endif +# ifdef __LP64__ +# define _gl_file_offset_t int64_t +# else + /* see https://android.googlesource.com/platform/bionic/+/master/docs/32-bit-abi.md */ +# define _gl_file_offset_t __kernel_off_t +# endif + /* Up to this commit from 2015-10-12 + + the innards of FILE were public, and fp_ub could be defined like for OpenBSD, + see + and . + After this commit, the innards of FILE are hidden. */ +# define fp_ ((struct { unsigned char *_p; \ + int _r; \ + int _w; \ + _gl_flags_file_t _flags; \ + _gl_flags_file_t _file; \ + struct { unsigned char *_base; size_t _size; } _bf; \ + int _lbfsize; \ + void *_cookie; \ + void *_close; \ + void *_read; \ + void *_seek; \ + void *_write; \ + struct { unsigned char *_base; size_t _size; } _ext; \ + unsigned char *_up; \ + int _ur; \ + unsigned char _ubuf[3]; \ + unsigned char _nbuf[1]; \ + struct { unsigned char *_base; size_t _size; } _lb; \ + int _blksize; \ + _gl_file_offset_t _offset; \ + /* More fields, not relevant here. */ \ + } *) fp) +# else +# define fp_ fp +# endif + +# if (defined __NetBSD__ && __NetBSD_Version__ >= 105270000) || defined __OpenBSD__ || defined __minix /* NetBSD >= 1.5ZA, OpenBSD, Minix 3 */ + /* See + and + and */ + struct __sfileext + { + struct __sbuf _ub; /* ungetc buffer */ + /* More fields, not relevant here. */ + }; +# define fp_ub ((struct __sfileext *) fp->_ext._base)->_ub +# elif defined __ANDROID__ /* Android */ + struct __sfileext + { + struct { unsigned char *_base; size_t _size; } _ub; /* ungetc buffer */ + /* More fields, not relevant here. */ + }; +# define fp_ub ((struct __sfileext *) fp_->_ext._base)->_ub +# else /* FreeBSD, NetBSD <= 1.5Z, DragonFly, Mac OS X, Cygwin */ +# define fp_ub fp_->_ub +# endif + +# define HASUB(fp) (fp_ub._base != NULL) + +# if defined __ANDROID__ /* Android */ + /* Needed after this commit from 2016-01-25 + */ +# ifndef __SEOF +# define __SLBF 1 +# define __SNBF 2 +# define __SRD 4 +# define __SWR 8 +# define __SRW 0x10 +# define __SEOF 0x20 +# define __SERR 0x40 +# endif +# ifndef __SOFF +# define __SOFF 0x1000 +# endif +# endif + +#endif + + +/* SystemV derived implementations. */ + +#ifdef __TANDEM /* NonStop Kernel */ +# ifndef _IOERR +/* These values were determined by the program 'stdioext-flags' at + . */ +# define _IOERR 0x40 +# define _IOREAD 0x80 +# define _IOWRT 0x4 +# define _IORW 0x100 +# endif +#endif + +#if defined _IOERR + +# if defined __sun && defined _LP64 /* Solaris/{SPARC,AMD64} 64-bit */ +# define fp_ ((struct { unsigned char *_ptr; \ + unsigned char *_base; \ + unsigned char *_end; \ + long _cnt; \ + int _file; \ + unsigned int _flag; \ + } *) fp) +# elif defined __VMS /* OpenVMS */ +# define fp_ ((struct _iobuf *) fp) +# else +# define fp_ fp +# endif + +# if defined _SCO_DS || (defined __SCO_VERSION__ || defined __sysv5__) /* OpenServer 5, OpenServer 6, UnixWare 7 */ +# define _cnt __cnt +# define _ptr __ptr +# define _base __base +# define _flag __flag +# endif + +#elif defined _WIN32 && ! defined __CYGWIN__ /* newer Windows with MSVC */ + +/* does not define the innards of FILE any more. */ +# define WINDOWS_OPAQUE_FILE + +struct _gl_real_FILE +{ + /* Note: Compared to older Windows and to mingw, it has the fields + _base and _cnt swapped. */ + unsigned char *_ptr; + unsigned char *_base; + int _cnt; + int _flag; + int _file; + int _charbuf; + int _bufsiz; +}; +# define fp_ ((struct _gl_real_FILE *) fp) + +/* These values were determined by a program similar to the one at + . */ +# define _IOREAD 0x1 +# define _IOWRT 0x2 +# define _IORW 0x4 +# define _IOEOF 0x8 +# define _IOERR 0x10 + +#endif -- cgit v1.2.3