251 lines
7.2 KiB
C
251 lines
7.2 KiB
C
/*
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include "config.h"
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#include "wine/port.h"
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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 <stdio.h>
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#include <sys/time.h>
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#include "mountmgr.h"
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#include "excpt.h"
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#include "wine/library.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(mountmgr);
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#ifdef SONAME_LIBHAL
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#include <dbus/dbus.h>
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#include <hal/libhal.h>
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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 *hal_handle;
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char error[128];
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/* Load libhal with RTLD_GLOBAL so that the dbus symbols are available.
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* We can't load libdbus directly since libhal may have been built against a
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* different version but with the same soname. Binary compatibility is for wimps. */
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if (!(hal_handle = wine_dlopen(SONAME_LIBHAL, RTLD_NOW|RTLD_GLOBAL, error, sizeof(error))))
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goto failed;
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#define DO_FUNC(f) if (!(p_##f = wine_dlsym( RTLD_DEFAULT, #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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WARN( "failed to load HAL support: %s\n", error );
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return FALSE;
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}
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static LONG WINAPI assert_fault(EXCEPTION_POINTERS *eptr)
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{
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if (eptr->ExceptionRecord->ExceptionCode == EXCEPTION_WINE_ASSERTION)
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return EXCEPTION_EXECUTE_HANDLER;
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return EXCEPTION_CONTINUE_SEARCH;
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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 = NULL;
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char *mount_point = NULL;
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char *device = NULL;
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char *type = NULL;
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enum device_type drive_type;
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p_dbus_error_init( &error );
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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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if (type && !strcmp( type, "cdrom" )) drive_type = DEVICE_CDROM;
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else if (type && !strcmp( type, "floppy" )) drive_type = DEVICE_FLOPPY;
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else drive_type = DEVICE_UNKNOWN;
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add_dos_device( -1, udi, device, mount_point, drive_type, NULL );
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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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if (type) p_libhal_free_string( type );
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if (parent) p_libhal_free_string( parent );
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if (device) p_libhal_free_string( device );
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if (mount_point) p_libhal_free_string( mount_point );
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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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TRACE( "removed %s\n", wine_dbgstr_a(udi) );
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if (!remove_dos_device( -1, udi ))
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{
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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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p_dbus_error_free( &error );
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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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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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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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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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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 /* SONAME_LIBHAL */
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void initialize_hal(void)
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{
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TRACE( "Skipping, HAL support not compiled in\n" );
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}
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#endif /* SONAME_LIBHAL */
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