mirror of
https://github.com/reactos/wine.git
synced 2024-12-07 03:17:17 +00:00
267 lines
7.4 KiB
C
267 lines
7.4 KiB
C
/*
|
|
* Dynamic devices support
|
|
*
|
|
* Copyright 2006 Alexandre Julliard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "wine/port.h"
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <sys/time.h>
|
|
|
|
#include "windef.h"
|
|
#include "winbase.h"
|
|
#include "winreg.h"
|
|
#include "winuser.h"
|
|
#include "dbt.h"
|
|
|
|
#include "wine/library.h"
|
|
#include "wine/list.h"
|
|
#include "wine/debug.h"
|
|
|
|
WINE_DEFAULT_DEBUG_CHANNEL(explorer);
|
|
|
|
struct dos_drive
|
|
{
|
|
struct list entry;
|
|
char *udi;
|
|
int drive;
|
|
};
|
|
|
|
static struct list drives_list = LIST_INIT(drives_list);
|
|
|
|
static char *get_dosdevices_path(void)
|
|
{
|
|
const char *config_dir = wine_get_config_dir();
|
|
size_t len = strlen(config_dir) + sizeof("/dosdevices/a::");
|
|
char *path = HeapAlloc( GetProcessHeap(), 0, len );
|
|
if (path)
|
|
{
|
|
strcpy( path, config_dir );
|
|
strcat( path, "/dosdevices/a::" );
|
|
}
|
|
return path;
|
|
}
|
|
|
|
/* send notification about a change to a given drive */
|
|
static void send_notify( int drive, int code )
|
|
{
|
|
DWORD_PTR result;
|
|
DEV_BROADCAST_VOLUME info;
|
|
|
|
info.dbcv_size = sizeof(info);
|
|
info.dbcv_devicetype = DBT_DEVTYP_VOLUME;
|
|
info.dbcv_reserved = 0;
|
|
info.dbcv_unitmask = 1 << drive;
|
|
info.dbcv_flags = DBTF_MEDIA;
|
|
SendMessageTimeoutW( HWND_BROADCAST, WM_DEVICECHANGE, code, (LPARAM)&info,
|
|
SMTO_ABORTIFHUNG, 0, &result );
|
|
}
|
|
|
|
static inline int is_valid_device( struct stat *st )
|
|
{
|
|
#if defined(linux) || defined(__sun__)
|
|
return S_ISBLK( st->st_mode );
|
|
#else
|
|
/* disks are char devices on *BSD */
|
|
return S_ISCHR( st->st_mode );
|
|
#endif
|
|
}
|
|
|
|
/* find or create a DOS drive for the corresponding device */
|
|
static int add_drive( const char *device, const char *type )
|
|
{
|
|
char *path, *p;
|
|
char in_use[26];
|
|
struct stat dev_st, drive_st;
|
|
int drive, first, last, avail = 0;
|
|
|
|
if (stat( device, &dev_st ) == -1 || !is_valid_device( &dev_st )) return -1;
|
|
|
|
if (!(path = get_dosdevices_path())) return -1;
|
|
p = path + strlen(path) - 3;
|
|
|
|
memset( in_use, 0, sizeof(in_use) );
|
|
|
|
first = 2;
|
|
last = 26;
|
|
if (type && !strcmp( type, "floppy" ))
|
|
{
|
|
first = 0;
|
|
last = 2;
|
|
}
|
|
|
|
while (avail != -1)
|
|
{
|
|
avail = -1;
|
|
for (drive = first; drive < last; drive++)
|
|
{
|
|
if (in_use[drive]) continue; /* already checked */
|
|
*p = 'a' + drive;
|
|
if (stat( path, &drive_st ) == -1)
|
|
{
|
|
if (lstat( path, &drive_st ) == -1 && errno == ENOENT) /* this is a candidate */
|
|
{
|
|
if (avail == -1)
|
|
{
|
|
p[2] = 0;
|
|
/* if mount point symlink doesn't exist either, it's available */
|
|
if (lstat( path, &drive_st ) == -1 && errno == ENOENT) avail = drive;
|
|
p[2] = ':';
|
|
}
|
|
}
|
|
else in_use[drive] = 1;
|
|
}
|
|
else
|
|
{
|
|
in_use[drive] = 1;
|
|
if (!is_valid_device( &drive_st )) continue;
|
|
if (dev_st.st_rdev == drive_st.st_rdev) goto done;
|
|
}
|
|
}
|
|
if (avail != -1)
|
|
{
|
|
/* try to use the one we found */
|
|
drive = avail;
|
|
*p = 'a' + drive;
|
|
if (symlink( device, path ) != -1) goto done;
|
|
/* failed, retry the search */
|
|
}
|
|
}
|
|
drive = -1;
|
|
|
|
done:
|
|
HeapFree( GetProcessHeap(), 0, path );
|
|
return drive;
|
|
}
|
|
|
|
static BOOL set_mount_point( struct dos_drive *drive, const char *mount_point )
|
|
{
|
|
char *path, *p;
|
|
struct stat path_st, mnt_st;
|
|
BOOL modified = FALSE;
|
|
|
|
if (drive->drive == -1) return FALSE;
|
|
if (!(path = get_dosdevices_path())) return FALSE;
|
|
p = path + strlen(path) - 3;
|
|
*p = 'a' + drive->drive;
|
|
p[2] = 0;
|
|
|
|
if (mount_point[0])
|
|
{
|
|
/* try to avoid unlinking if already set correctly */
|
|
if (stat( path, &path_st ) == -1 || stat( mount_point, &mnt_st ) == -1 ||
|
|
path_st.st_dev != mnt_st.st_dev || path_st.st_ino != mnt_st.st_ino)
|
|
{
|
|
unlink( path );
|
|
symlink( mount_point, path );
|
|
modified = TRUE;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (unlink( path ) != -1) modified = TRUE;
|
|
}
|
|
|
|
HeapFree( GetProcessHeap(), 0, path );
|
|
return modified;
|
|
}
|
|
|
|
BOOL add_dos_device( const char *udi, const char *device,
|
|
const char *mount_point, const char *type )
|
|
{
|
|
struct dos_drive *drive;
|
|
|
|
/* first check if it already exists */
|
|
LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
|
|
{
|
|
if (!strcmp( udi, drive->udi )) goto found;
|
|
}
|
|
|
|
if (!(drive = HeapAlloc( GetProcessHeap(), 0, sizeof(*drive) ))) return FALSE;
|
|
if (!(drive->udi = HeapAlloc( GetProcessHeap(), 0, strlen(udi)+1 )))
|
|
{
|
|
HeapFree( GetProcessHeap(), 0, drive );
|
|
return FALSE;
|
|
}
|
|
strcpy( drive->udi, udi );
|
|
list_add_tail( &drives_list, &drive->entry );
|
|
|
|
found:
|
|
drive->drive = add_drive( device, type );
|
|
if (drive->drive != -1)
|
|
{
|
|
HKEY hkey;
|
|
|
|
set_mount_point( drive, mount_point );
|
|
|
|
WINE_TRACE( "added device %c: udi %s for %s on %s type %s\n",
|
|
'a' + drive->drive, wine_dbgstr_a(udi), wine_dbgstr_a(device),
|
|
wine_dbgstr_a(mount_point), wine_dbgstr_a(type) );
|
|
|
|
/* hack: force the drive type in the registry */
|
|
if (!RegCreateKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drives", &hkey ))
|
|
{
|
|
char name[3] = "a:";
|
|
name[0] += drive->drive;
|
|
if (!type || strcmp( type, "cdrom" )) type = "floppy"; /* FIXME: default to floppy */
|
|
RegSetValueExA( hkey, name, 0, REG_SZ, (const BYTE *)type, strlen(type) + 1 );
|
|
RegCloseKey( hkey );
|
|
}
|
|
|
|
send_notify( drive->drive, DBT_DEVICEARRIVAL );
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
BOOL remove_dos_device( const char *udi )
|
|
{
|
|
HKEY hkey;
|
|
struct dos_drive *drive;
|
|
|
|
LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
|
|
{
|
|
if (strcmp( udi, drive->udi )) continue;
|
|
|
|
if (drive->drive != -1)
|
|
{
|
|
BOOL modified = set_mount_point( drive, "" );
|
|
|
|
/* clear the registry key too */
|
|
if (!RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drives", &hkey ))
|
|
{
|
|
char name[3] = "a:";
|
|
name[0] += drive->drive;
|
|
RegDeleteValueA( hkey, name );
|
|
RegCloseKey( hkey );
|
|
}
|
|
|
|
if (modified) send_notify( drive->drive, DBT_DEVICEREMOVECOMPLETE );
|
|
}
|
|
|
|
list_remove( &drive->entry );
|
|
HeapFree( GetProcessHeap(), 0, drive->udi );
|
|
HeapFree( GetProcessHeap(), 0, drive );
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|