forked from 0ad/0ad
janwas
34186dd017
- separate file_system_util into vfs functions (-> vfs/vfs_util) and file_system (avoids ugly fs_util namespace prefix) - get rid of non-portable O_BINARY_NP etc. flags - use standard O_WRONLY etc. flags instead of LIO_WRITE; but avoid the need for specifying O_CREAT|O_TRUNC - only open files for aio when O_DIRECT is specified (which 0ad does not) - avoids wasting time and security issues - return file descriptor directly instead of via output param - waio: safer FCB mechanism that avoids mixing descriptors between lowio and aio This was SVN commit r9550.
102 lines
2.3 KiB
C++
102 lines
2.3 KiB
C++
/* Copyright (c) 2010 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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* simple POSIX file wrapper.
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*/
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#ifndef INCLUDED_FILE
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#define INCLUDED_FILE
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#include "lib/os_path.h"
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#include "lib/sysdep/filesystem.h" // O_*, S_*
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namespace ERR
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{
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const Status FILE_ACCESS = -110300;
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const Status FILE_NOT_FOUND = -110301;
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}
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// @param oflag: either O_RDONLY or O_WRONLY (in which case O_CREAT and
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// O_TRUNC are added), plus O_DIRECT if aio is desired
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// @return file descriptor or a negative Status
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LIB_API Status FileOpen(const OsPath& pathname, int oflag);
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LIB_API void FileClose(int& fd);
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class File
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{
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public:
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File()
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: pathname(), fd(-1)
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{
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}
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File(const OsPath& pathname, int oflag)
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{
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(void)Open(pathname, oflag);
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}
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~File()
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{
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Close();
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}
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Status Open(const OsPath& pathname, int oflag)
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{
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Status ret = FileOpen(pathname, oflag);
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RETURN_STATUS_IF_ERR(ret);
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this->pathname = pathname;
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this->fd = (int)ret;
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this->oflag = oflag;
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return INFO::OK;
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}
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void Close()
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{
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FileClose(fd);
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}
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const OsPath& Pathname() const
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{
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return pathname;
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}
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int Descriptor() const
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{
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return fd;
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}
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int Flags() const
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{
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return oflag;
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}
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private:
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OsPath pathname;
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int fd;
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int oflag;
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};
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typedef shared_ptr<File> PFile;
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#endif // #ifndef INCLUDED_FILE
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