subsys/system/cmd/vol.c

   1 /*
   2  *  VOL.C - vol internal command.
   3  *
   4  *
   5  *  History:
   6  *
   7  *    03-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
   8  *        Replaced DOS calls by Win32 calls.
   9  *
  10  *    08-Dec-1998 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
  11  *        Added help text ("/?").
  12  *
  13  *    07-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
  14  *        Cleanup.
  15  *
  16  *    18-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
  17  *        Unicode ready!
  18  *
  19  *    20-Jan-1999 (Eric Kohl <ekohl@abo.rhein-zeitung.de>)
  20  *        Redirection ready!
  21  */
  22
  23 #include "config.h"
  24
  25 #ifdef INCLUDE_CMD_VOL
  26
  27 #include <windows.h>
  28 #include <tchar.h>
  29 #include <string.h>
  30
  31 #include "cmd.h"
  32
  33
  34 static INT
  35 PrintVolumeHeader (LPTSTR pszRootPath)
  36 {
  37         TCHAR szVolName[80];
  38         DWORD dwSerialNr;
  39
  40         /* get the volume information of the drive */
  41         if(!GetVolumeInformation (pszRootPath,
  42                                   szVolName,
  43                                   80,
  44                                   &dwSerialNr,
  45                                   NULL,
  46                                   NULL,
  47                                   NULL,
  48                                   0))
  49         {
  50                 ErrorMessage (GetLastError (), _T(""));
  51                 return 1;
  52         }
  53
  54         /* print drive info */
  55         ConOutPrintf (_T(" Volume in drive %c:"), pszRootPath[0]);
  56
  57         if (szVolName[0] != '\0')
  58                 ConOutPrintf (_T(" is %s\n"),
  59                               szVolName);
  60         else
  61                 ConOutPrintf (_T(" has no label\n"));
  62
  63         /* print the volume serial number */
  64         ConOutPrintf (_T(" Volume Serial Number is %04X-%04X\n"),
  65                       HIWORD(dwSerialNr),
  66                       LOWORD(dwSerialNr));
  67         return 0;
  68 }
  69
  70
  71 INT cmd_vol (LPTSTR cmd, LPTSTR param)
  72 {
  73         TCHAR szRootPath[] = _T("A:\\");
  74         TCHAR szPath[MAX_PATH];
  75
  76         if (!_tcsncmp (param, _T("/?"), 2))
  77         {
  78                 ConOutPuts (_T("Displays the disk volume label and serial number, if they exist.\n\n"
  79                             "VOL [drive:]"));
  80                 return 0;
  81         }
  82
  83         if (param[0] == _T('\0'))
  84         {
  85                 GetCurrentDirectory (MAX_PATH, szPath);
  86                 szRootPath[0] = szPath[0];
  87         }
  88         else
  89         {
  90                 _tcsupr (param);
  91                 if (param[1] == _T(':'))
  92                         szRootPath[0] = param[0];
  93                 else
  94                 {
  95                         error_invalid_drive ();
  96                         return 1;
  97                 }
  98         }
  99
 100         if (!IsValidPathName (szRootPath))
 101         {
 102                 error_invalid_drive ();
 103                 return 1;
 104         }
 105
 106         /* print the header */
 107         if (!PrintVolumeHeader (szRootPath))
 108                 return 1;
 109
 110         return 0;
 111 }
 112
 113 #endif