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.
64 lines
2.0 KiB
C++
64 lines
2.0 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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#include "precompiled.h"
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#include "lib/file/file.h"
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#include "lib/file/common/file_stats.h"
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static const StatusDefinition fileStatusDefinitions[] = {
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{ ERR::FILE_ACCESS, L"Insufficient access rights to open file", EACCES },
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{ ERR::FILE_NOT_FOUND, L"No such file or directory", ENOENT }
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};
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STATUS_ADD_DEFINITIONS(fileStatusDefinitions);
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Status FileOpen(const OsPath& pathname, int oflag)
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{
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ENSURE((oflag & ~(O_RDONLY|O_WRONLY|O_DIRECT)) == 0);
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if(oflag & O_WRONLY)
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oflag |= O_CREAT|O_TRUNC;
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// prevent exploits by disallowing writes to our files by other users.
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// note that the system-wide installed cache is read-only.
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const mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH; // 0644
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const int fd = wopen(pathname, oflag, mode);
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if(fd < 0)
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return StatusFromErrno(); // NOWARN
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stats_open();
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return (Status)fd;
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}
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void FileClose(int& fd)
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{
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if(fd >= 0)
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{
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wclose(fd);
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fd = -1;
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}
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}
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