4 * Copyright 2006 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
36 #include "wine/library.h"
37 #include "wine/exception.h"
38 #include "wine/debug.h"
39 #include "explorer_private.h"
41 WINE_DEFAULT_DEBUG_CHANNEL(explorer);
45 #include <dbus/dbus.h>
46 #include <hal/libhal.h>
49 DO_FUNC(dbus_bus_get); \
50 DO_FUNC(dbus_connection_close); \
51 DO_FUNC(dbus_connection_read_write_dispatch); \
52 DO_FUNC(dbus_error_init); \
53 DO_FUNC(dbus_error_free); \
54 DO_FUNC(dbus_error_is_set)
57 DO_FUNC(libhal_ctx_free); \
58 DO_FUNC(libhal_ctx_init); \
59 DO_FUNC(libhal_ctx_new); \
60 DO_FUNC(libhal_ctx_set_dbus_connection); \
61 DO_FUNC(libhal_ctx_set_device_added); \
62 DO_FUNC(libhal_ctx_set_device_property_modified); \
63 DO_FUNC(libhal_ctx_set_device_removed); \
64 DO_FUNC(libhal_ctx_shutdown); \
65 DO_FUNC(libhal_device_get_property_bool); \
66 DO_FUNC(libhal_device_get_property_string); \
67 DO_FUNC(libhal_device_add_property_watch); \
68 DO_FUNC(libhal_device_remove_property_watch); \
69 DO_FUNC(libhal_free_string); \
70 DO_FUNC(libhal_free_string_array); \
71 DO_FUNC(libhal_get_all_devices)
73 #define DO_FUNC(f) static typeof(f) * p_##f
78 static BOOL load_functions(void)
83 /* Load libhal with RTLD_GLOBAL so that the dbus symbols are available.
84 * We can't load libdbus directly since libhal may have been built against a
85 * different version but with the same soname. Binary compatibility is for wimps. */
87 if (!(hal_handle = wine_dlopen(SONAME_LIBHAL, RTLD_NOW|RTLD_GLOBAL, error, sizeof(error))))
90 #define DO_FUNC(f) if (!(p_##f = wine_dlsym( RTLD_DEFAULT, #f, error, sizeof(error) ))) goto failed
94 #define DO_FUNC(f) if (!(p_##f = wine_dlsym( hal_handle, #f, error, sizeof(error) ))) goto failed
101 WINE_WARN( "failed to load HAL support: %s\n", error );
105 static WINE_EXCEPTION_FILTER(assert_fault)
107 if (GetExceptionCode() == EXCEPTION_WINE_ASSERTION) return EXCEPTION_EXECUTE_HANDLER;
108 return EXCEPTION_CONTINUE_SEARCH;
111 /* HAL callback for new device */
112 static void new_device( LibHalContext *ctx, const char *udi )
115 char *parent, *mount_point, *device, *type;
117 p_dbus_error_init( &error );
119 if (!(device = p_libhal_device_get_property_string( ctx, udi, "block.device", &error )))
122 if (!(mount_point = p_libhal_device_get_property_string( ctx, udi, "volume.mount_point", &error )))
125 if (!(parent = p_libhal_device_get_property_string( ctx, udi, "info.parent", &error )))
128 if (!p_libhal_device_get_property_bool( ctx, parent, "storage.removable", &error ))
131 if (!(type = p_libhal_device_get_property_string( ctx, parent, "storage.drive_type", &error )))
132 p_dbus_error_free( &error ); /* ignore error */
134 add_dos_device( udi, device, mount_point, type );
136 if (type) p_libhal_free_string( type );
137 p_libhal_free_string( parent );
138 p_libhal_free_string( device );
139 p_libhal_free_string( mount_point );
141 /* add property watch for mount point */
142 p_libhal_device_add_property_watch( ctx, udi, &error );
145 p_dbus_error_free( &error );
148 /* HAL callback for removed device */
149 static void removed_device( LibHalContext *ctx, const char *udi )
153 WINE_TRACE( "removed %s\n", wine_dbgstr_a(udi) );
155 if (remove_dos_device( udi ))
157 p_dbus_error_init( &error );
158 p_libhal_device_remove_property_watch( ctx, udi, &error );
159 p_dbus_error_free( &error );
163 /* HAL callback for property changes */
164 static void property_modified (LibHalContext *ctx, const char *udi,
165 const char *key, dbus_bool_t is_removed, dbus_bool_t is_added)
167 WINE_TRACE( "udi %s key %s %s\n", wine_dbgstr_a(udi), wine_dbgstr_a(key),
168 is_added ? "added" : is_removed ? "removed" : "modified" );
170 if (!strcmp( key, "volume.mount_point" )) new_device( ctx, udi );
174 static DWORD WINAPI hal_thread( void *arg )
182 if (!(ctx = p_libhal_ctx_new())) return 1;
184 p_dbus_error_init( &error );
185 if (!(dbc = p_dbus_bus_get( DBUS_BUS_SYSTEM, &error )))
187 WINE_WARN( "failed to get system dbus connection: %s\n", error.message );
188 p_dbus_error_free( &error );
192 p_libhal_ctx_set_dbus_connection( ctx, dbc );
193 p_libhal_ctx_set_device_added( ctx, new_device );
194 p_libhal_ctx_set_device_removed( ctx, removed_device );
195 p_libhal_ctx_set_device_property_modified( ctx, property_modified );
197 if (!p_libhal_ctx_init( ctx, &error ))
199 WINE_WARN( "HAL context init failed: %s\n", error.message );
200 p_dbus_error_free( &error );
204 /* retrieve all existing devices */
205 if (!(list = p_libhal_get_all_devices( ctx, &num, &error ))) p_dbus_error_free( &error );
208 for (i = 0; i < num; i++) new_device( ctx, list[i] );
209 p_libhal_free_string_array( list );
214 while (p_dbus_connection_read_write_dispatch( dbc, -1 )) /* nothing */ ;
216 __EXCEPT( assert_fault )
218 WINE_WARN( "dbus assertion failure, disabling HAL support\n" );
223 p_libhal_ctx_shutdown( ctx, &error );
224 p_dbus_error_free( &error ); /* just in case */
225 p_dbus_connection_close( dbc );
226 p_libhal_ctx_free( ctx );
230 void initialize_hal(void)
234 if (!load_functions()) return;
235 if (!(handle = CreateThread( NULL, 0, hal_thread, NULL, 0, NULL ))) return;
236 CloseHandle( handle );
239 #else /* HAVE_LIBHAL */
241 void initialize_hal(void)
243 WINE_TRACE( "Skipping, HAL support not compiled in\n" );
246 #endif /* HAVE_LIBHAL */