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 "config.h"
  24
  25 #include <windows.h>
  26 #include <winioctl.h>
  27 #include <ntddstor.h>
  28 #include <stdio.h>
  29 #include <stdlib.h>
  30
  31 #include "wine/debug.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(eject);
  34
  35 /* options */
  36 static BOOL unmount_only;
  37 static BOOL eject_all;
  38
  39 /* wrapper for GetDriveTypeW */
  40 static DWORD get_drive_type( WCHAR drive )
  41 {
  42     static const WCHAR rootW[] = {'a',':','\\',0};
  43     WCHAR path[16];
  44
  45     memcpy( path, rootW, sizeof(rootW) );
  46     path[0] = drive;
  47     return GetDriveTypeW( path );
  48 }
  49
  50 static BOOL eject_cd( WCHAR drive )
  51 {
  52     static const WCHAR deviceW[] = {'\\','\\','.','\\','a',':',0};
  53     PREVENT_MEDIA_REMOVAL removal;
  54     WCHAR buffer[16];
  55     HANDLE handle;
  56     DWORD result;
  57
  58     if (get_drive_type( drive ) != DRIVE_CDROM)
  59     {
  60         WINE_MESSAGE( "Drive %c: is not a CD or is not mounted\n", (char)drive );
  61         return FALSE;
  62     }
  63
  64     memcpy( buffer, deviceW, sizeof(deviceW) );
  65     buffer[4] = drive;
  66     handle = CreateFileW( buffer, 0, FILE_SHARE_READ|FILE_SHARE_WRITE,
  67                           NULL, OPEN_EXISTING, 0, 0 );
  68     if (handle == INVALID_HANDLE_VALUE)
  69     {
  70         WINE_MESSAGE( "Cannot open device for drive %c:\n", (char)drive );
  71         return FALSE;
  72     }
  73
  74     WINE_TRACE( "ejecting %c:\n", (char)drive );
  75
  76     if (!DeviceIoControl( handle, FSCTL_DISMOUNT_VOLUME, NULL, 0, NULL, 0, &result, NULL ))
  77         WINE_WARN( "FSCTL_DISMOUNT_VOLUME failed with err %d\n", GetLastError() );
  78
  79     removal.PreventMediaRemoval = FALSE;
  80     if (!DeviceIoControl( handle, IOCTL_STORAGE_MEDIA_REMOVAL, &removal, sizeof(removal), NULL, 0, &result, NULL ))
  81         WINE_WARN( "IOCTL_STORAGE_MEDIA_REMOVAL failed with err %d\n", GetLastError() );
  82
  83     if (!unmount_only)
  84     {
  85         if (!DeviceIoControl( handle, IOCTL_STORAGE_EJECT_MEDIA, NULL, 0, NULL, 0, &result, NULL ))
  86             WINE_WARN( "IOCTL_STORAGE_EJECT_MEDIA failed with err %d\n", GetLastError() );
  87     }
  88
  89     CloseHandle( handle );
  90     return TRUE;
  91 }
  92
  93 /* find the CD drive, and die if we find more than one */
  94 static WCHAR find_cd_drive(void)
  95 {
  96     WCHAR ret = 0, drive;
  97
  98     for (drive = 'c'; drive <= 'z'; drive++)
  99     {
 100         if (get_drive_type( drive ) != DRIVE_CDROM) continue;
 101         if (ret)
 102         {
 103             WINE_MESSAGE( "Multiple CD drives found (%c: and %c:), you need to specify the one you want.\n",
 104                           (char)ret, (char)drive );
 105             exit(1);
 106         }
 107         ret = drive;
 108     }
 109     return ret;
 110 }
 111
 112 static void usage(void)
 113 {
 114     WINE_MESSAGE( "Usage: eject [-u] [-a] [-h] [x:]...\n" );
 115     WINE_MESSAGE( "    -a  Eject all the CD drives we find\n" );
 116     WINE_MESSAGE( "    -h  Display this help message\n" );
 117     WINE_MESSAGE( "    -u  Unmount only, don't eject the CD\n" );
 118     WINE_MESSAGE( "    x:  Eject drive x:\n" );
 119     exit(1);
 120 }
 121
 122 static void parse_options( int *argc, char *argv[] )
 123 {
 124     int i;
 125     char *opt;
 126
 127     for (i = 1; i < *argc; i++)
 128     {
 129         if (argv[i][0] != '-')
 130         {
 131             /* check for valid drive argument */
 132             if (strlen(argv[i]) != 2 || argv[i][1] != ':') usage();
 133             continue;
 134         }
 135         for (opt = argv[i] + 1; *opt; opt++) switch(*opt)
 136         {
 137         case 'a': eject_all = TRUE; break;
 138         case 'u': unmount_only = TRUE; break;
 139         case 'h': usage(); break;
 140         default:
 141             WINE_MESSAGE( "Unknown option -%c\n", *opt );
 142             usage();
 143         }
 144         memmove( argv + i, argv + i + 1, (*argc - i) * sizeof(*argv) );
 145         (*argc)--;
 146         i--;
 147     }
 148 }
 149
 150 int main( int argc, char *argv[] )
 151 {
 152     parse_options( &argc, argv );
 153
 154     if (eject_all)
 155     {
 156         WCHAR drive;
 157
 158         for (drive = 'c'; drive <= 'z'; drive++)
 159         {
 160             if (get_drive_type( drive ) != DRIVE_CDROM) continue;
 161             if (!eject_cd( drive )) exit(1);
 162         }
 163     }
 164     else if (argc > 1)
 165     {
 166         int i;
 167
 168         for (i = 1; i < argc; i++)
 169             if (!eject_cd( argv[i][0] )) exit(1);
 170     }
 171     else
 172     {
 173         WCHAR drive = find_cd_drive();
 174
 175         if (!drive)
 176         {
 177             WINE_MESSAGE( "No CD drive found\n" );
 178             exit(1);
 179         }
 180         if (!eject_cd( drive )) exit(1);
 181     }
 182     exit(0);
 183 }