Line data    Source code

       1             : /* Copyright (C) 2010 Wildfire Games.
       2             :  *
       3             :  * Permission is hereby granted, free of charge, to any person obtaining
       4             :  * a copy of this software and associated documentation files (the
       5             :  * "Software"), to deal in the Software without restriction, including
       6             :  * without limitation the rights to use, copy, modify, merge, publish,
       7             :  * distribute, sublicense, and/or sell copies of the Software, and to
       8             :  * permit persons to whom the Software is furnished to do so, subject to
       9             :  * the following conditions:
      10             :  *
      11             :  * The above copyright notice and this permission notice shall be included
      12             :  * in all copies or substantial portions of the Software.
      13             :  *
      14             :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
      15             :  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
      16             :  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
      17             :  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
      18             :  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
      19             :  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
      20             :  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
      21             :  */
      22             : 
      23             : /*
      24             :  * simple POSIX file wrapper.
      25             :  */
      26             : 
      27             : #include "precompiled.h"
      28             : #include "lib/file/file.h"
      29             : 
      30             : #include "lib/file/common/file_stats.h"
      31             : 
      32             : static const StatusDefinition fileStatusDefinitions[] = {
      33             :     { ERR::FILE_ACCESS, L"Insufficient access rights to open file", EACCES },
      34             :     { ERR::FILE_NOT_FOUND, L"No such file or directory", ENOENT }
      35             : };
      36           1 : STATUS_ADD_DEFINITIONS(fileStatusDefinitions);
      37             : 
      38             : 
      39        2934 : Status FileOpen(const OsPath& pathname, int oflag)
      40             : {
      41        2934 :     ENSURE((oflag & ~(O_RDONLY|O_WRONLY|O_DIRECT)) == 0);
      42        2934 :     if(oflag & O_WRONLY)
      43          97 :         oflag |= O_CREAT|O_TRUNC;
      44             :     // prevent exploits by disallowing writes to our files by other users.
      45             :     // note that the system-wide installed cache is read-only.
      46        2934 :     const mode_t mode = S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH;    // 0644
      47        2934 :     const int fd = wopen(pathname, oflag, mode);
      48        2934 :     if(fd < 0)
      49           0 :         return StatusFromErrno();   // NOWARN
      50             : 
      51             :     stats_open();
      52        2934 :     return (Status)fd;
      53             : }
      54             : 
      55             : 
      56        3031 : void FileClose(int& fd)
      57             : {
      58        3031 :     if(fd >= 0)
      59             :     {
      60        2934 :         wclose(fd);
      61        2934 :         fd = -1;
      62             :     }
      63        3034 : }