programs/eject/eject.c

   1 /*
   2  * Eject CDs
   3  *
   4  * Copyright 2005 Alexandre Julliard for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define WIN32_LEAN_AND_MEAN
  22
  23 #include <windows.h>
  24 #include <winioctl.h>
  25 #include <ntddstor.h>
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28
  29 #include "wine/debug.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(eject);
  32
  33 /* options */
  34 static BOOL unmount_only;
  35 static BOOL eject_all;
  36
  37 /* wrapper for GetDriveTypeW */
  38 static DWORD get_drive_type( WCHAR drive )
  39 {
  40     WCHAR path[16];
  41
  42     lstrcpyW( path, L"a:\\" );
  43     path[0] = drive;
  44     return GetDriveTypeW( path );
  45 }
  46
  47 static BOOL eject_cd( WCHAR drive )
  48 {
  49     PREVENT_MEDIA_REMOVAL removal;
  50     WCHAR buffer[16];
  51     HANDLE handle;
  52     DWORD result;
  53
  54     if (get_drive_type( drive ) != DRIVE_CDROM)
  55     {
  56         WINE_MESSAGE( "Drive %c: is not a CD or is not mounted\n", (char)drive );
  57         return FALSE;
  58     }
  59
  60     lstrcpyW( buffer, L"\\\\.\\a:" );
  61     buffer[4] = drive;
  62     handle = CreateFileW( buffer, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
  63                           NULL, OPEN_EXISTING, 0, 0 );
  64     if (handle == INVALID_HANDLE_VALUE)
  65     {
  66         WINE_MESSAGE( "Cannot open device for drive %c:\n", (char)drive );
  67         return FALSE;
  68     }
  69
  70     WINE_TRACE( "ejecting %c:\n", (char)drive );
  71
  72     if (!DeviceIoControl( handle, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0, &result, NULL ))
  73         WINE_WARN( "FSCTL_DISMOUNT_VOLUME failed with err %d\n", GetLastError() );
  74
  75     removal.PreventMediaRemoval = FALSE;
  76     if (!DeviceIoControl( handle, IOCTL_STORAGE_MEDIA_REMOVAL, &removal, sizeof(removal), NULL, 0, &result, NULL ))
  77         WINE_WARN( "IOCTL_STORAGE_MEDIA_REMOVAL failed with err %d\n", GetLastError() );
  78
  79     if (!unmount_only)
  80     {
  81         if (!DeviceIoControl( handle, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &result, NULL ))
  82             WINE_WARN( "IOCTL_STORAGE_EJECT_MEDIA failed with err %d\n", GetLastError() );
  83     }
  84
  85     CloseHandle( handle );
  86     return TRUE;
  87 }
  88
  89 /* find the CD drive, and die if we find more than one */
  90 static WCHAR find_cd_drive(void)
  91 {
  92     WCHAR ret = 0, drive;
  93
  94     for (drive = 'c'; drive <= 'z'; drive++)
  95     {
  96         if (get_drive_type( drive ) != DRIVE_CDROM) continue;
  97         if (ret)
  98         {
  99             WINE_MESSAGE( "Multiple CD drives found (%c: and %c:), you need to specify the one you want.\n",
 100                           (char)ret, (char)drive );
 101             exit(1);
 102         }
 103         ret = drive;
 104     }
 105     return ret;
 106 }
 107
 108 static void usage(void)
 109 {
 110     WINE_MESSAGE( "Usage: eject [-u] [-a] [-h] [x:]...\n" );
 111     WINE_MESSAGE( "    -a  Eject all the CD drives we find\n" );
 112     WINE_MESSAGE( "    -h  Display this help message\n" );
 113     WINE_MESSAGE( "    -u  Unmount only, don't eject the CD\n" );
 114     WINE_MESSAGE( "    x:  Eject drive x:\n" );
 115     exit(1);
 116 }
 117
 118 static void parse_options( int *argc, char *argv[] )
 119 {
 120     int i;
 121     char *opt;
 122
 123     for (i = 1; i < *argc; i++)
 124     {
 125         if (argv[i][0] != '-')
 126         {
 127             /* check for valid drive argument */
 128             if (strlen(argv[i]) != 2 || argv[i][1] != ':') usage();
 129             continue;
 130         }
 131         for (opt = argv[i] + 1; *opt; opt++) switch(*opt)
 132         {
 133         case 'a': eject_all = TRUE; break;
 134         case 'u': unmount_only = TRUE; break;
 135         case 'h': usage(); break;
 136         default:
 137             WINE_MESSAGE( "Unknown option -%c\n", *opt );
 138             usage();
 139         }
 140         memmove( argv + i, argv + i + 1, (*argc - i) * sizeof(*argv) );
 141         (*argc)--;
 142         i--;
 143     }
 144 }
 145
 146 int __cdecl main( int argc, char *argv[] )
 147 {
 148     parse_options( &argc, argv );
 149
 150     if (eject_all)
 151     {
 152         WCHAR drive;
 153
 154         for (drive = 'c'; drive <= 'z'; drive++)
 155         {
 156             if (get_drive_type( drive ) != DRIVE_CDROM) continue;
 157             if (!eject_cd( drive )) exit(1);
 158         }
 159     }
 160     else if (argc > 1)
 161     {
 162         int i;
 163
 164         for (i = 1; i < argc; i++)
 165             if (!eject_cd( argv[i][0] )) exit(1);
 166     }
 167     else
 168     {
 169         WCHAR drive = find_cd_drive();
 170
 171         if (!drive)
 172         {
 173             WINE_MESSAGE( "No CD drive found\n" );
 174             exit(1);
 175         }
 176         if (!eject_cd( drive )) exit(1);
 177     }
 178     exit(0);
 179 }