reactos/lib/msvcrt/sys_stat/fstat.c

   1 /*
   2  * COPYRIGHT:   See COPYING in the top level directory
   3  * PROJECT:     ReactOS system libraries
   4  * FILE:        lib/crtdll/sys/fstat.c
   5  * PURPOSE:     Gather file information
   6  * PROGRAMER:   Boudewijn Dekker
   7  * UPDATE HISTORY:
   8  *              28/12/98: Created
   9  */
  10 #include <windows.h>
  11 #include <msvcrt/sys/types.h>
  12 #include <msvcrt/sys/stat.h>
  13 #include <msvcrt/fcntl.h>
  14 #include <msvcrt/string.h>
  15 #include <msvcrt/errno.h>
  16 #include <msvcrt/internal/file.h>
  17
  18
  19 int _fstat(int fd, struct stat *statbuf)
  20 {
  21   BY_HANDLE_FILE_INFORMATION  FileInformation;
  22
  23   if (!statbuf)
  24     {
  25       __set_errno(EINVAL);
  26       return -1;
  27     }
  28
  29   if (fd >= 0 && fd <= 4)
  30   {
  31     memset(statbuf, 0, sizeof(struct stat));
  32     statbuf->st_dev = fd;
  33     statbuf->st_mode = S_IFCHR;
  34     return 0;
  35   }
  36
  37   if (!GetFileInformationByHandle(_get_osfhandle(fd),&FileInformation))
  38     {
  39       __set_errno(EBADF);
  40       return -1;
  41     }
  42   statbuf->st_ctime = FileTimeToUnixTime(&FileInformation.ftCreationTime,NULL);
  43   statbuf->st_atime = FileTimeToUnixTime(&FileInformation.ftLastAccessTime,NULL);
  44   statbuf->st_mtime = FileTimeToUnixTime(&FileInformation.ftLastWriteTime,NULL);
  45
  46   statbuf->st_dev = fd;
  47   statbuf->st_size = FileInformation.nFileSizeLow;
  48   statbuf->st_mode = S_IREAD;
  49   if (FileInformation.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) statbuf->st_mode |= S_IFDIR;
  50   if (!(FileInformation.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) statbuf->st_mode |= S_IWRITE;
  51
  52   return 0;
  53 }
  54
  55 __int64 _fstati64 (int fd, struct _stati64* statbuf)
  56 {
  57   BY_HANDLE_FILE_INFORMATION FileInformation;
  58
  59   if (!statbuf)
  60     {
  61       __set_errno(EINVAL);
  62       return -1;
  63     }
  64
  65   if (!GetFileInformationByHandle(_get_osfhandle(fd),
  66                                   &FileInformation))
  67     {
  68       __set_errno(EBADF);
  69       return -1;
  70     }
  71   statbuf->st_ctime = FileTimeToUnixTime(&FileInformation.ftCreationTime,NULL);
  72   statbuf->st_atime = FileTimeToUnixTime(&FileInformation.ftLastAccessTime,NULL);
  73   statbuf->st_mtime = FileTimeToUnixTime(&FileInformation.ftLastWriteTime,NULL);
  74
  75   statbuf->st_dev = fd;
  76   statbuf->st_size = (((__int64)FileInformation.nFileSizeHigh) << 32) +
  77                      FileInformation.nFileSizeLow;
  78   statbuf->st_mode = S_IREAD;
  79   if (FileInformation.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) statbuf->st_mode |= S_IFDIR;
  80   if (!(FileInformation.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) statbuf->st_mode |= S_IWRITE;
  81   return 0;
  82 }