| /* ----------------------------------------------------------------------- * |
| * |
| * Copyright 1996-2017 The NASM Authors - All Rights Reserved |
| * See the file AUTHORS included with the NASM distribution for |
| * the specific copyright holders. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following |
| * conditions are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND |
| * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, |
| * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| #ifndef NASMLIB_FILE_H |
| #define NASMLIB_FILE_H |
| |
| #include "compiler.h" |
| #include "nasmlib.h" |
| #include "error.h" |
| |
| #include <errno.h> |
| |
| #ifdef HAVE_FCNTL_H |
| # include <fcntl.h> |
| #endif |
| #ifdef HAVE_SYS_TYPES_H |
| # include <sys/types.h> |
| #endif |
| #ifdef HAVE_SYS_STAT_H |
| # include <sys/stat.h> |
| #endif |
| #ifdef HAVE_IO_H |
| # include <io.h> |
| #endif |
| #ifdef HAVE_UNISTD_H |
| # include <unistd.h> |
| #endif |
| #ifdef HAVE_SYS_MMAN_H |
| # include <sys/mman.h> |
| #endif |
| |
| #if !defined(HAVE_ACCESS) && defined(HAVE__ACCESS) |
| # define HAVE_ACCESS 1 |
| # define access _access |
| #endif |
| #ifndef R_OK |
| # define R_OK 4 /* Classic Unix constant, same on Windows */ |
| #endif |
| |
| /* Can we adjust the file size without actually writing all the bytes? */ |
| #ifdef HAVE__CHSIZE_S |
| # define nasm_ftruncate(fd,size) _chsize_s(fd,size) |
| #elif defined(HAVE__CHSIZE) |
| # define nasm_ftruncate(fd,size) _chsize(fd,size) |
| #elif defined(HAVE_FTRUNCATE) |
| # define nasm_ftruncate(fd,size) ftruncate(fd,size) |
| #endif |
| |
| /* |
| * On Win32/64, stat has a 32-bit file size but _stati64 has a 64-bit file |
| * size. Things get complicated because some of these may be macros, |
| * which autoconf won't pick up on as the standard autoconf tests do |
| * #undef. |
| */ |
| #ifdef _stati64 |
| # define HAVE_STRUCT__STATI64 1 |
| # define HAVE__STATI64 1 |
| #endif |
| #ifdef _fstati64 |
| # define HAVE__FSTATI64 1 |
| #endif |
| |
| #ifdef HAVE_STRUCT__STATI64 |
| typedef struct _stati64 nasm_struct_stat; |
| # ifdef HAVE__STATI64 |
| # define nasm_stat _stati64 |
| # endif |
| # ifdef HAVE__FSTATI64 |
| # define nasm_fstat _fstati64 |
| # endif |
| #elif defined(HAVE_STRUCT_STAT) |
| typedef struct stat nasm_struct_stat; |
| # ifdef HAVE_STAT |
| # define nasm_stat stat |
| # endif |
| # ifdef HAVE_FSTAT |
| # define nasm_fstat fstat |
| # endif |
| #endif |
| |
| #ifndef HAVE_FILENO |
| # ifdef fileno /* autoconf doesn't always pick up macros */ |
| # define HAVE_FILENO 1 |
| # elif defined(HAVE__FILENO) |
| # define HAVE_FILENO 1 |
| # define fileno _fileno |
| # endif |
| #endif |
| |
| /* These functions are utterly useless without fileno() */ |
| #ifndef HAVE_FILENO |
| # undef nasm_fstat |
| # undef nasm_ftruncate |
| # undef HAVE_MMAP |
| # undef HAVE__FILELENGTHI64 |
| #endif |
| |
| #endif /* NASMLIB_FILE_H */ |