explorer: Initial version of dynamic drive support using HAL.
This commit is contained in:
Alexandre Julliard
parent
0006898912
commit
7a324307b3
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@ -4,11 +4,13 @@ SRCDIR = @srcdir@
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VPATH = @srcdir@
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MODULE = explorer.exe
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APPMODE = -mwindows
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IMPORTS = user32 gdi32 advapi32 kernel32
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IMPORTS = user32 gdi32 advapi32 kernel32 ntdll
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EXTRADEFS = @HALINCL@
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C_SRCS = \
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desktop.c \
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explorer.c \
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hal.c \
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systray.c
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@MAKE_PROG_RULES@
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@ -163,6 +163,7 @@ void manage_desktop( char *arg )
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SetWindowTextW( hwnd, desktop_nameW );
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SystemParametersInfoA( SPI_SETDESKPATTERN, -1, NULL, FALSE );
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SetDeskWallPaper( (LPSTR)-1 );
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initialize_hal();
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initialize_systray();
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}
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else
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@ -22,6 +22,7 @@
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#define __WINE_EXPLORER_PRIVATE_H
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extern void manage_desktop( char *arg );
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extern void initialize_hal(void);
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extern void initialize_systray(void);
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#endif /* __WINE_EXPLORER_PRIVATE_H */
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@ -0,0 +1,438 @@
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/*
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* HAL devices support
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*
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* Copyright 2006 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "config.h"
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#include "wine/port.h"
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#ifdef HAVE_LIBHAL
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#include <assert.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <sys/time.h>
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#include <dbus/dbus.h>
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#include <hal/libhal.h>
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#include "windef.h"
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#include "winbase.h"
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#include "winreg.h"
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#include "winuser.h"
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#include "dbt.h"
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#include "excpt.h"
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#include "wine/library.h"
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#include "wine/list.h"
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#include "wine/exception.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(explorer);
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struct dos_drive
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{
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struct list entry;
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char *udi;
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int drive;
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};
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static struct list drives_list = LIST_INIT(drives_list);
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#define DBUS_FUNCS \
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DO_FUNC(dbus_bus_get); \
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DO_FUNC(dbus_connection_close); \
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DO_FUNC(dbus_connection_read_write_dispatch); \
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DO_FUNC(dbus_error_init); \
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DO_FUNC(dbus_error_free); \
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DO_FUNC(dbus_error_is_set)
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#define HAL_FUNCS \
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DO_FUNC(libhal_ctx_free); \
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DO_FUNC(libhal_ctx_init); \
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DO_FUNC(libhal_ctx_new); \
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DO_FUNC(libhal_ctx_set_dbus_connection); \
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DO_FUNC(libhal_ctx_set_device_added); \
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DO_FUNC(libhal_ctx_set_device_property_modified); \
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DO_FUNC(libhal_ctx_set_device_removed); \
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DO_FUNC(libhal_ctx_shutdown); \
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DO_FUNC(libhal_device_get_property_bool); \
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DO_FUNC(libhal_device_get_property_string); \
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DO_FUNC(libhal_device_add_property_watch); \
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DO_FUNC(libhal_device_remove_property_watch); \
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DO_FUNC(libhal_free_string); \
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DO_FUNC(libhal_free_string_array); \
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DO_FUNC(libhal_get_all_devices)
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#define DO_FUNC(f) static typeof(f) * p_##f
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DBUS_FUNCS;
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HAL_FUNCS;
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#undef DO_FUNC
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static BOOL load_functions(void)
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{
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void *dbus_handle, *hal_handle;
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char error[128];
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if (!(dbus_handle = wine_dlopen(SONAME_LIBDBUS_1, RTLD_NOW, error, sizeof(error)))) goto failed;
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if (!(hal_handle = wine_dlopen(SONAME_LIBHAL, RTLD_NOW, error, sizeof(error)))) goto failed;
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#define DO_FUNC(f) if (!(p_##f = wine_dlsym( dbus_handle, #f, error, sizeof(error) ))) goto failed
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DBUS_FUNCS;
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#undef DO_FUNC
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#define DO_FUNC(f) if (!(p_##f = wine_dlsym( hal_handle, #f, error, sizeof(error) ))) goto failed
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HAL_FUNCS;
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#undef DO_FUNC
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return TRUE;
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failed:
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WINE_WARN( "failed to load HAL support: %s\n", error );
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return FALSE;
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}
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static WINE_EXCEPTION_FILTER(assert_fault)
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{
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if (GetExceptionCode() == EXCEPTION_WINE_ASSERTION) return EXCEPTION_EXECUTE_HANDLER;
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return EXCEPTION_CONTINUE_SEARCH;
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}
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/* send notification about a change to a given drive */
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static void send_notify( int drive, int code )
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{
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DWORD_PTR result;
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DEV_BROADCAST_VOLUME info;
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info.dbcv_size = sizeof(info);
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info.dbcv_devicetype = DBT_DEVTYP_VOLUME;
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info.dbcv_reserved = 0;
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info.dbcv_unitmask = 1 << drive;
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info.dbcv_flags = DBTF_MEDIA;
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SendMessageTimeoutW( HWND_BROADCAST, WM_DEVICECHANGE, code, (LPARAM)&info,
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SMTO_ABORTIFHUNG, 0, &result );
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}
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static char *get_dosdevices_path(void)
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{
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const char *config_dir = wine_get_config_dir();
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size_t len = strlen(config_dir) + sizeof("/dosdevices/a::");
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char *path = HeapAlloc( GetProcessHeap(), 0, len );
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if (path)
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{
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strcpy( path, config_dir );
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strcat( path, "/dosdevices/a::" );
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}
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return path;
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}
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/* find or create a DOS drive for the corresponding device */
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static int add_drive( const char *device, const char *mount_point, const char *type )
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{
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char *path, *p;
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char in_use[26];
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struct stat dev_st, drive_st;
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int drive, first, last, avail = 0;
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if (stat( device, &dev_st ) == -1 || !S_ISBLK( dev_st.st_mode )) return -1;
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if (!(path = get_dosdevices_path())) return -1;
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p = path + strlen(path) - 3;
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memset( in_use, 0, sizeof(in_use) );
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first = 2;
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last = 26;
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if (type && !strcmp( type, "floppy" ))
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{
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first = 0;
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last = 2;
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}
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while (avail != -1)
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{
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avail = -1;
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for (drive = first; drive < last; drive++)
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{
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if (in_use[drive]) continue; /* already checked */
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*p = 'a' + drive;
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if (stat( path, &drive_st ) == -1)
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{
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if (lstat( path, &drive_st ) == -1 && errno == ENOENT) /* this is a candidate */
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{
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if (avail == -1)
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{
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p[2] = 0;
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/* if mount point symlink doesn't exist either, it's available */
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if (lstat( path, &drive_st ) == -1 && errno == ENOENT) avail = drive;
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p[2] = ':';
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}
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}
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else in_use[drive] = 1;
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}
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else
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{
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in_use[drive] = 1;
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if (!S_ISBLK( drive_st.st_mode )) continue;
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if (dev_st.st_rdev == drive_st.st_rdev) goto update_mount_point;
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}
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}
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if (avail != -1)
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{
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/* try to use the one we found */
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drive = avail;
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*p = 'a' + drive;
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if (symlink( device, path ) != -1) goto update_mount_point;
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/* failed, retry the search */
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}
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}
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HeapFree( GetProcessHeap(), 0, path );
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return -1;
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update_mount_point:
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p[2] = 0;
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unlink( path );
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if (mount_point[0]) symlink( mount_point, path );
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WINE_TRACE( "added drive %c: dev %s at %s\n",
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'a' + drive, wine_dbgstr_a(device), wine_dbgstr_a(mount_point) );
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HeapFree( GetProcessHeap(), 0, path );
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return drive;
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}
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static void remove_drive( int drive )
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{
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char *path, *p;
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if (!(path = get_dosdevices_path())) return;
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p = path + strlen(path) - 3;
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*p = 'a' + drive;
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p[2] = 0;
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unlink( path );
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/* we keep the device link around in case the device gets mounted again */
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HeapFree( GetProcessHeap(), 0, path );
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}
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static void add_dos_device( const char *udi, const char *device,
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const char *mount_point, const char *type )
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{
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struct dos_drive *drive;
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if (!(drive = HeapAlloc( GetProcessHeap(), 0, sizeof(*drive) ))) return;
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if (!(drive->udi = HeapAlloc( GetProcessHeap(), 0, strlen(udi)+1 )))
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{
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HeapFree( GetProcessHeap(), 0, drive );
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return;
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}
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strcpy( drive->udi, udi );
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drive->drive = add_drive( device, mount_point, type );
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if (drive->drive == -1)
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{
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HeapFree( GetProcessHeap(), 0, drive->udi );
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HeapFree( GetProcessHeap(), 0, drive );
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}
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else
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{
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HKEY hkey;
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WINE_TRACE( "added device %c: udi %s for %s on %s type %s\n",
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'a' + drive->drive, wine_dbgstr_a(udi), wine_dbgstr_a(device),
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wine_dbgstr_a(mount_point), wine_dbgstr_a(type) );
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list_add_tail( &drives_list, &drive->entry );
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/* hack: force the drive type in the registry */
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if (!RegCreateKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drives", &hkey ))
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{
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char name[3] = "a:";
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name[0] += drive->drive;
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if (!type || strcmp( type, "cdrom" )) type = "floppy"; /* FIXME: default to floppy */
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RegSetValueExA( hkey, name, 0, REG_SZ, (const BYTE *)type, strlen(type) + 1 );
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RegCloseKey( hkey );
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}
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send_notify( drive->drive, DBT_DEVICEARRIVAL );
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}
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}
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static void remove_dos_device( struct dos_drive *drive )
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{
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HKEY hkey;
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remove_drive( drive->drive );
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/* clear the registry key too */
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if (!RegOpenKeyA( HKEY_LOCAL_MACHINE, "Software\\Wine\\Drives", &hkey ))
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{
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char name[3] = "a:";
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name[0] += drive->drive;
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RegDeleteValueA( hkey, name );
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RegCloseKey( hkey );
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}
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send_notify( drive->drive, DBT_DEVICEREMOVECOMPLETE );
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list_remove( &drive->entry );
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HeapFree( GetProcessHeap(), 0, drive->udi );
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HeapFree( GetProcessHeap(), 0, drive );
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}
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/* HAL callback for new device */
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static void new_device( LibHalContext *ctx, const char *udi )
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{
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DBusError error;
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char *parent, *mount_point, *device, *type;
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p_dbus_error_init( &error );
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if (!(mount_point = p_libhal_device_get_property_string( ctx, udi, "volume.mount_point", &error )))
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goto done;
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if (!(device = p_libhal_device_get_property_string( ctx, udi, "block.device", &error )))
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goto done;
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if (!(mount_point = p_libhal_device_get_property_string( ctx, udi, "volume.mount_point", &error )))
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goto done;
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if (!(parent = p_libhal_device_get_property_string( ctx, udi, "info.parent", &error )))
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goto done;
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if (!p_libhal_device_get_property_bool( ctx, parent, "storage.removable", &error ))
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goto done;
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if (!(type = p_libhal_device_get_property_string( ctx, parent, "storage.drive_type", &error )))
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p_dbus_error_free( &error ); /* ignore error */
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add_dos_device( udi, device, mount_point, type );
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if (type) p_libhal_free_string( type );
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p_libhal_free_string( parent );
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p_libhal_free_string( device );
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p_libhal_free_string( mount_point );
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/* add property watch for mount point */
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p_libhal_device_add_property_watch( ctx, udi, &error );
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done:
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p_dbus_error_free( &error );
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}
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/* HAL callback for removed device */
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static void removed_device( LibHalContext *ctx, const char *udi )
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{
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DBusError error;
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struct dos_drive *drive;
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WINE_TRACE( "removed %s\n", wine_dbgstr_a(udi) );
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LIST_FOR_EACH_ENTRY( drive, &drives_list, struct dos_drive, entry )
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{
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if (strcmp( udi, drive->udi )) continue;
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p_dbus_error_init( &error );
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p_libhal_device_remove_property_watch( ctx, udi, &error );
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remove_dos_device( drive );
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p_dbus_error_free( &error );
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return;
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}
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}
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/* HAL callback for property changes */
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static void property_modified (LibHalContext *ctx, const char *udi,
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const char *key, dbus_bool_t is_removed, dbus_bool_t is_added)
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{
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WINE_TRACE( "udi %s key %s %s\n", wine_dbgstr_a(udi), wine_dbgstr_a(key),
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is_added ? "added" : is_removed ? "removed" : "modified" );
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if (!strcmp( key, "volume.mount_point" )) new_device( ctx, udi );
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}
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static DWORD WINAPI hal_thread( void *arg )
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{
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DBusError error;
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DBusConnection *dbc;
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LibHalContext *ctx;
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int i, num;
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char **list;
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if (!(ctx = p_libhal_ctx_new())) return 1;
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p_dbus_error_init( &error );
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if (!(dbc = p_dbus_bus_get( DBUS_BUS_SYSTEM, &error )))
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{
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WINE_WARN( "failed to get system dbus connection: %s\n", error.message );
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p_dbus_error_free( &error );
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return 1;
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}
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p_libhal_ctx_set_dbus_connection( ctx, dbc );
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p_libhal_ctx_set_device_added( ctx, new_device );
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p_libhal_ctx_set_device_removed( ctx, removed_device );
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p_libhal_ctx_set_device_property_modified( ctx, property_modified );
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if (!p_libhal_ctx_init( ctx, &error ))
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{
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WINE_WARN( "HAL context init failed: %s\n", error.message );
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p_dbus_error_free( &error );
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return 1;
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}
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/* retrieve all existing devices */
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if (!(list = p_libhal_get_all_devices( ctx, &num, &error ))) p_dbus_error_free( &error );
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else
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{
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for (i = 0; i < num; i++) new_device( ctx, list[i] );
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p_libhal_free_string_array( list );
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}
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__TRY
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{
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while (p_dbus_connection_read_write_dispatch( dbc, -1 )) /* nothing */ ;
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}
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__EXCEPT( assert_fault )
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{
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WINE_WARN( "dbus assertion failure, disabling HAL support\n" );
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return 1;
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}
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__ENDTRY;
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p_libhal_ctx_shutdown( ctx, &error );
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p_dbus_error_free( &error ); /* just in case */
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p_dbus_connection_close( dbc );
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p_libhal_ctx_free( ctx );
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return 0;
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}
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void initialize_hal(void)
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{
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HANDLE handle;
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if (!load_functions()) return;
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if (!(handle = CreateThread( NULL, 0, hal_thread, NULL, 0, NULL ))) return;
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CloseHandle( handle );
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}
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#else /* HAVE_LIBHAL */
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void initialize_hal(void)
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{
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}
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#endif /* HAVE_LIBHAL */
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