reactos/lib/crt/sys_stat/fstat.c

   1 /* $Id$
   2  *
   3  * COPYRIGHT:   See COPYING in the top level directory
   4  * PROJECT:     ReactOS system libraries
   5  * FILE:        lib/msvcrt/sys/fstat.c
   6  * PURPOSE:     Gather file information
   7  * PROGRAMER:   Boudewijn Dekker
   8  * UPDATE HISTORY:
   9  *              28/12/98: Created
  10  */
  11
  12 #include "precomp.h"
  13 #include <sys/types.h>
  14 #include <sys/stat.h>
  15 #include <fcntl.h>
  16 #include <string.h>
  17 #include <errno.h>
  18 #include <internal/file.h>
  19
  20
  21 /*
  22  * @implemented
  23  */
  24 int _fstat(int fd, struct _stat* statbuf)
  25 {
  26   BY_HANDLE_FILE_INFORMATION  FileInformation;
  27   DWORD dwFileType;
  28   void* handle;
  29
  30   if (!statbuf) {
  31     __set_errno(EINVAL);
  32     return -1;
  33   }
  34
  35   if ((void*)-1 == (handle = (void*)_get_osfhandle(fd)))
  36   {
  37     __set_errno(EBADF);
  38     return -1;
  39   }
  40
  41   fflush(NULL);
  42
  43   memset (statbuf, 0, sizeof(struct stat));
  44
  45   dwFileType = GetFileType(handle);
  46
  47   if (dwFileType == FILE_TYPE_DISK)
  48   {
  49     if (!GetFileInformationByHandle(handle,&FileInformation))
  50     {
  51       __set_errno(EBADF);
  52       return -1;
  53     }
  54     statbuf->st_ctime = FileTimeToUnixTime(&FileInformation.ftCreationTime,NULL);
  55     statbuf->st_atime = FileTimeToUnixTime(&FileInformation.ftLastAccessTime,NULL);
  56     statbuf->st_mtime = FileTimeToUnixTime(&FileInformation.ftLastWriteTime,NULL);
  57
  58     statbuf->st_dev = fd;
  59     statbuf->st_size = FileInformation.nFileSizeLow;
  60     statbuf->st_mode = S_IREAD;
  61     if (FileInformation.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY)
  62       statbuf->st_mode |= S_IFDIR;
  63     else
  64       statbuf->st_mode |= S_IFREG;
  65     if (!(FileInformation.dwFileAttributes & FILE_ATTRIBUTE_READONLY))
  66       statbuf->st_mode |= S_IWRITE;
  67   }
  68   else if (dwFileType == FILE_TYPE_CHAR)
  69   {
  70     statbuf->st_dev = fd;
  71     statbuf->st_mode = S_IFCHR;
  72   }
  73   else if (dwFileType == FILE_TYPE_PIPE)
  74   {
  75     statbuf->st_dev = fd;
  76     statbuf->st_mode = S_IFIFO;
  77   }
  78   else
  79   {
  80     // dwFileType is FILE_TYPE_UNKNOWN or has a bad value
  81     __set_errno(EBADF);
  82     return -1;
  83   }
  84   return 0;
  85 }