vladislavbelov
8c068aab07
Tested By: Langbart Differential Revision: https://code.wildfiregames.com/D4470 This was SVN commit r26281.
117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
/* Copyright (C) 2022 Wildfire Games.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* wchar_t versions of POSIX filesystem functions
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*/
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#ifndef INCLUDED_SYSDEP_FILESYSTEM
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#define INCLUDED_SYSDEP_FILESYSTEM
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#include "lib/os_path.h"
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#include "lib/posix/posix_filesystem.h" // mode_t
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//
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// dirent.h
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//
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struct WDIR;
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struct wdirent
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{
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// note: SUSv3 describes this as a "char array" but of unspecified size.
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// we declare as a pointer to avoid having to copy the string.
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wchar_t* d_name;
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};
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extern WDIR* wopendir(const OsPath& path);
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extern wdirent* wreaddir(WDIR*);
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// return status for the file returned by the last successful
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// wreaddir call from the given directory stream.
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// currently sets st_size, st_mode, and st_mtime; the rest are zeroed.
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// non-portable, but considerably faster than stat(). used by dir_ForEachSortedEntry.
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extern int wreaddir_stat_np(WDIR*, struct stat*);
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extern int wclosedir(WDIR*);
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//
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// fcntl.h
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//
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// transfer directly to/from user's buffer.
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// treated as a request to enable aio.
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#ifndef O_DIRECT // i.e. Windows or OS X
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#define O_DIRECT 0x10000000 // (value does not conflict with any current Win32 _O_* flags.)
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#endif
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// Win32 _wsopen_s does not open files in a manner compatible with waio.
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// if its aio_read/aio_write are to be used, waio_open must (also) be called.
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// calling both is possible but wasteful and unsafe, since it prevents
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// file sharing restrictions, which are the only way to prevent
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// exposing previous data as a side effect of waio_Preallocate.
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// applications shouldn't mix aio and synchronous I/O anyway, so we
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// want wopen to call either waio_open or _wsopen_s.
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// since waio requires callers to respect the FILE_FLAG_NO_BUFFERING
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// restrictions (sector alignment), and IRIX/BSD/Linux O_DIRECT imposes
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// similar semantics, we treat that flag as a request to enable aio.
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extern int wopen(const OsPath& pathname, int oflag);
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extern int wopen(const OsPath& pathname, int oflag, mode_t mode);
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extern int wclose(int fd);
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//
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// unistd.h
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//
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// waio requires offsets and sizes to be multiples of the sector size.
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// to allow arbitrarily sized files, we truncate them after I/O.
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// however, ftruncate cannot be used since it is also subject to the
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// sector-alignment requirement. instead, the file must be closed and
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// this function called.
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int wtruncate(const OsPath& pathname, off_t length);
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int wunlink(const OsPath& pathname);
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int wrmdir(const OsPath& path);
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//
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// stdlib.h
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//
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OsPath wrealpath(const OsPath& pathname);
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//
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// sys/stat.h
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//
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int wstat(const OsPath& pathname, struct stat* buf);
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int wmkdir(const OsPath& path, mode_t mode);
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#endif // #ifndef INCLUDED_SYSDEP_FILESYSTEM
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