579 lines
18 KiB
C
579 lines
18 KiB
C
/*
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* DBus devices support
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*
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* Copyright 2006, 2011 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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#ifdef SONAME_LIBDBUS_1
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# include <dbus/dbus.h>
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#endif
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#ifdef SONAME_LIBHAL
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# include <hal/libhal.h>
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#endif
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#include "mountmgr.h"
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#include "winnls.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_LIBDBUS_1
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#define DBUS_FUNCS \
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DO_FUNC(dbus_bus_add_match); \
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DO_FUNC(dbus_bus_get); \
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DO_FUNC(dbus_bus_remove_match); \
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DO_FUNC(dbus_connection_add_filter); \
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DO_FUNC(dbus_connection_read_write_dispatch); \
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DO_FUNC(dbus_connection_remove_filter); \
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DO_FUNC(dbus_connection_send_with_reply_and_block); \
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DO_FUNC(dbus_error_free); \
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DO_FUNC(dbus_error_init); \
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DO_FUNC(dbus_error_is_set); \
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DO_FUNC(dbus_free_string_array); \
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DO_FUNC(dbus_message_get_args); \
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DO_FUNC(dbus_message_get_interface); \
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DO_FUNC(dbus_message_get_member); \
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DO_FUNC(dbus_message_get_path); \
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DO_FUNC(dbus_message_get_type); \
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DO_FUNC(dbus_message_is_signal); \
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DO_FUNC(dbus_message_iter_append_basic); \
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DO_FUNC(dbus_message_iter_get_arg_type); \
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DO_FUNC(dbus_message_iter_get_basic); \
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DO_FUNC(dbus_message_iter_init); \
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DO_FUNC(dbus_message_iter_init_append); \
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DO_FUNC(dbus_message_iter_next); \
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DO_FUNC(dbus_message_iter_recurse); \
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DO_FUNC(dbus_message_new_method_call); \
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DO_FUNC(dbus_message_unref);
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#define DO_FUNC(f) static typeof(f) * p_##f
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DBUS_FUNCS;
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#undef DO_FUNC
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static int udisks_timeout = -1;
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static DBusConnection *connection;
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#ifdef SONAME_LIBHAL
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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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HAL_FUNCS;
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#undef DO_FUNC
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static BOOL load_hal_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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udisks_timeout = 3000; /* don't try for too long if we can fall back to HAL */
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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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#endif /* SONAME_LIBHAL */
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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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static inline int starts_with( const char *str, const char *prefix )
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{
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return !strncmp( str, prefix, strlen(prefix) );
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}
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static GUID *parse_uuid( GUID *guid, const char *str )
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{
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/* standard uuid format */
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if (strlen(str) == 36)
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{
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UNICODE_STRING strW;
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WCHAR buffer[39];
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if (MultiByteToWideChar( CP_UNIXCP, 0, str, 36, buffer + 1, 36 ))
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{
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buffer[0] = '{';
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buffer[37] = '}';
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buffer[38] = 0;
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RtlInitUnicodeString( &strW, buffer );
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if (!RtlGUIDFromString( &strW, guid )) return guid;
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}
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}
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/* check for xxxx-xxxx format (FAT serial number) */
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if (strlen(str) == 9 && str[4] == '-')
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{
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memset( guid, 0, sizeof(*guid) );
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if (sscanf( str, "%hx-%hx", &guid->Data2, &guid->Data3 ) == 2) return guid;
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}
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return NULL;
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}
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static BOOL load_dbus_functions(void)
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{
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void *handle;
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char error[128];
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if (!(handle = wine_dlopen(SONAME_LIBDBUS_1, RTLD_NOW, error, sizeof(error))))
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goto failed;
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#define DO_FUNC(f) if (!(p_##f = wine_dlsym( handle, #f, error, sizeof(error) ))) goto failed
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DBUS_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 DBUS support: %s\n", error );
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return FALSE;
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}
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static const char *udisks_next_dict_entry( DBusMessageIter *iter, DBusMessageIter *variant )
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{
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DBusMessageIter sub;
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const char *name;
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if (p_dbus_message_iter_get_arg_type( iter ) != DBUS_TYPE_DICT_ENTRY) return NULL;
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p_dbus_message_iter_recurse( iter, &sub );
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p_dbus_message_iter_next( iter );
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p_dbus_message_iter_get_basic( &sub, &name );
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p_dbus_message_iter_next( &sub );
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p_dbus_message_iter_recurse( &sub, variant );
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return name;
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}
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static enum device_type udisks_parse_media_compatibility( DBusMessageIter *iter )
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{
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DBusMessageIter media;
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enum device_type drive_type = DEVICE_UNKNOWN;
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p_dbus_message_iter_recurse( iter, &media );
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while (p_dbus_message_iter_get_arg_type( &media ) == DBUS_TYPE_STRING)
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{
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const char *media_type;
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p_dbus_message_iter_get_basic( &media, &media_type );
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if (starts_with( media_type, "optical_dvd" ))
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drive_type = DEVICE_DVD;
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if (starts_with( media_type, "floppy" ))
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drive_type = DEVICE_FLOPPY;
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else if (starts_with( media_type, "optical_" ) && drive_type == DEVICE_UNKNOWN)
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drive_type = DEVICE_CDROM;
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p_dbus_message_iter_next( &media );
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}
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return drive_type;
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}
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/* UDisks callback for new device */
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static void udisks_new_device( const char *udi )
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{
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static const char *dev_name = "org.freedesktop.UDisks.Device";
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DBusMessage *request, *reply;
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DBusMessageIter iter, variant;
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DBusError error;
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const char *device = NULL;
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const char *mount_point = NULL;
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const char *type = NULL;
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GUID guid, *guid_ptr = NULL;
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int removable = FALSE;
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enum device_type drive_type = DEVICE_UNKNOWN;
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request = p_dbus_message_new_method_call( "org.freedesktop.UDisks", udi,
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"org.freedesktop.DBus.Properties", "GetAll" );
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if (!request) return;
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p_dbus_message_iter_init_append( request, &iter );
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p_dbus_message_iter_append_basic( &iter, DBUS_TYPE_STRING, &dev_name );
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p_dbus_error_init( &error );
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reply = p_dbus_connection_send_with_reply_and_block( connection, request, -1, &error );
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p_dbus_message_unref( request );
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if (!reply)
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{
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WARN( "failed: %s\n", error.message );
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p_dbus_error_free( &error );
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return;
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}
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p_dbus_error_free( &error );
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p_dbus_message_iter_init( reply, &iter );
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if (p_dbus_message_iter_get_arg_type( &iter ) == DBUS_TYPE_ARRAY)
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{
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const char *name;
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p_dbus_message_iter_recurse( &iter, &iter );
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while ((name = udisks_next_dict_entry( &iter, &variant )))
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{
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if (!strcmp( name, "DeviceFile" ))
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p_dbus_message_iter_get_basic( &variant, &device );
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else if (!strcmp( name, "DeviceIsRemovable" ))
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p_dbus_message_iter_get_basic( &variant, &removable );
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else if (!strcmp( name, "IdType" ))
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p_dbus_message_iter_get_basic( &variant, &type );
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else if (!strcmp( name, "DriveMediaCompatibility" ))
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drive_type = udisks_parse_media_compatibility( &variant );
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else if (!strcmp( name, "DeviceMountPaths" ))
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{
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DBusMessageIter paths;
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p_dbus_message_iter_recurse( &variant, &paths );
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if (p_dbus_message_iter_get_arg_type( &paths ) == DBUS_TYPE_STRING)
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p_dbus_message_iter_get_basic( &paths, &mount_point );
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}
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else if (!strcmp( name, "IdUuid" ))
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{
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char *uuid_str;
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p_dbus_message_iter_get_basic( &variant, &uuid_str );
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guid_ptr = parse_uuid( &guid, uuid_str );
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}
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}
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}
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TRACE( "udi %s device %s mount point %s uuid %s type %s removable %u\n",
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debugstr_a(udi), debugstr_a(device), debugstr_a(mount_point),
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debugstr_guid(guid_ptr), debugstr_a(type), removable );
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if (type)
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{
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if (!strcmp( type, "iso9660" ))
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{
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removable = TRUE;
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drive_type = DEVICE_CDROM;
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}
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else if (!strcmp( type, "udf" ))
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{
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removable = TRUE;
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drive_type = DEVICE_DVD;
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}
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}
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if (device)
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{
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if (removable) add_dos_device( -1, udi, device, mount_point, drive_type, guid_ptr );
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else if (guid_ptr) add_volume( udi, device, mount_point, DEVICE_HARDDISK_VOL, guid_ptr );
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}
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p_dbus_message_unref( reply );
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}
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/* UDisks callback for removed device */
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static void udisks_removed_device( const char *udi )
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{
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TRACE( "removed %s\n", wine_dbgstr_a(udi) );
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if (!remove_dos_device( -1, udi )) remove_volume( udi );
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}
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/* UDisks callback for changed device */
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static void udisks_changed_device( const char *udi )
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{
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udisks_new_device( udi );
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}
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static BOOL udisks_enumerate_devices(void)
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{
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DBusMessage *request, *reply;
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DBusError error;
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char **paths;
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int i, count;
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request = p_dbus_message_new_method_call( "org.freedesktop.UDisks", "/org/freedesktop/UDisks",
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"org.freedesktop.UDisks", "EnumerateDevices" );
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if (!request) return FALSE;
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p_dbus_error_init( &error );
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reply = p_dbus_connection_send_with_reply_and_block( connection, request, udisks_timeout, &error );
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p_dbus_message_unref( request );
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if (!reply)
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{
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WARN( "failed: %s\n", error.message );
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p_dbus_error_free( &error );
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return FALSE;
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}
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p_dbus_error_free( &error );
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if (p_dbus_message_get_args( reply, &error, DBUS_TYPE_ARRAY,
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DBUS_TYPE_OBJECT_PATH, &paths, &count, DBUS_TYPE_INVALID ))
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{
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for (i = 0; i < count; i++) udisks_new_device( paths[i] );
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p_dbus_free_string_array( paths );
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}
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else WARN( "unexpected args in EnumerateDevices reply\n" );
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p_dbus_message_unref( reply );
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return TRUE;
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}
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static DBusHandlerResult udisks_filter( DBusConnection *ctx, DBusMessage *msg, void *user_data )
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{
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char *path;
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DBusError error;
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p_dbus_error_init( &error );
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if (p_dbus_message_is_signal( msg, "org.freedesktop.UDisks", "DeviceAdded" ) &&
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p_dbus_message_get_args( msg, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID ))
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{
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udisks_new_device( path );
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}
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else if (p_dbus_message_is_signal( msg, "org.freedesktop.UDisks", "DeviceRemoved" ) &&
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p_dbus_message_get_args( msg, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID ))
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{
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udisks_removed_device( path );
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}
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else if (p_dbus_message_is_signal( msg, "org.freedesktop.UDisks", "DeviceChanged" ) &&
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p_dbus_message_get_args( msg, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID ))
|
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{
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udisks_changed_device( path );
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}
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else TRACE( "ignoring message type=%d path=%s interface=%s method=%s\n",
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p_dbus_message_get_type( msg ), p_dbus_message_get_path( msg ),
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p_dbus_message_get_interface( msg ), p_dbus_message_get_member( msg ) );
|
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|
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p_dbus_error_free( &error );
|
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
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}
|
|
|
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#ifdef SONAME_LIBHAL
|
|
|
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/* HAL callback for new device */
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static void hal_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;
|
|
char *type = NULL;
|
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char *uuid_str = NULL;
|
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GUID guid, *guid_ptr = 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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|
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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 (!(uuid_str = p_libhal_device_get_property_string( ctx, udi, "volume.uuid", &error )))
|
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p_dbus_error_free( &error ); /* ignore error */
|
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else
|
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guid_ptr = parse_uuid( &guid, uuid_str );
|
|
|
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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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if (p_libhal_device_get_property_bool( ctx, parent, "storage.removable", &error ))
|
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{
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add_dos_device( -1, udi, device, mount_point, drive_type, guid_ptr );
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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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}
|
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else if (guid_ptr) add_volume( udi, device, mount_point, DEVICE_HARDDISK_VOL, guid_ptr );
|
|
|
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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 (uuid_str) p_libhal_free_string( uuid_str );
|
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if (mount_point) p_libhal_free_string( mount_point );
|
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p_dbus_error_free( &error );
|
|
}
|
|
|
|
/* HAL callback for removed device */
|
|
static void hal_removed_device( LibHalContext *ctx, const char *udi )
|
|
{
|
|
DBusError error;
|
|
|
|
TRACE( "removed %s\n", wine_dbgstr_a(udi) );
|
|
|
|
if (!remove_dos_device( -1, udi ))
|
|
{
|
|
p_dbus_error_init( &error );
|
|
p_libhal_device_remove_property_watch( ctx, udi, &error );
|
|
p_dbus_error_free( &error );
|
|
}
|
|
else remove_volume( udi );
|
|
}
|
|
|
|
/* HAL callback for property changes */
|
|
static void hal_property_modified (LibHalContext *ctx, const char *udi,
|
|
const char *key, dbus_bool_t is_removed, dbus_bool_t is_added)
|
|
{
|
|
TRACE( "udi %s key %s %s\n", wine_dbgstr_a(udi), wine_dbgstr_a(key),
|
|
is_added ? "added" : is_removed ? "removed" : "modified" );
|
|
|
|
if (!strcmp( key, "volume.mount_point" )) hal_new_device( ctx, udi );
|
|
}
|
|
|
|
static BOOL hal_enumerate_devices(void)
|
|
{
|
|
LibHalContext *ctx;
|
|
DBusError error;
|
|
int i, num;
|
|
char **list;
|
|
|
|
if (!p_libhal_ctx_new) return FALSE;
|
|
if (!(ctx = p_libhal_ctx_new())) return FALSE;
|
|
|
|
p_libhal_ctx_set_dbus_connection( ctx, connection );
|
|
p_libhal_ctx_set_device_added( ctx, hal_new_device );
|
|
p_libhal_ctx_set_device_removed( ctx, hal_removed_device );
|
|
p_libhal_ctx_set_device_property_modified( ctx, hal_property_modified );
|
|
|
|
p_dbus_error_init( &error );
|
|
if (!p_libhal_ctx_init( ctx, &error ))
|
|
{
|
|
WARN( "HAL context init failed: %s\n", error.message );
|
|
p_dbus_error_free( &error );
|
|
return FALSE;
|
|
}
|
|
|
|
/* retrieve all existing devices */
|
|
if (!(list = p_libhal_get_all_devices( ctx, &num, &error ))) p_dbus_error_free( &error );
|
|
else
|
|
{
|
|
for (i = 0; i < num; i++) hal_new_device( ctx, list[i] );
|
|
p_libhal_free_string_array( list );
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
#endif /* SONAME_LIBHAL */
|
|
|
|
static DWORD WINAPI dbus_thread( void *arg )
|
|
{
|
|
static const char udisks_match[] = "type='signal',"
|
|
"interface='org.freedesktop.UDisks',"
|
|
"sender='org.freedesktop.UDisks'";
|
|
|
|
DBusError error;
|
|
|
|
p_dbus_error_init( &error );
|
|
if (!(connection = p_dbus_bus_get( DBUS_BUS_SYSTEM, &error )))
|
|
{
|
|
WARN( "failed to get system dbus connection: %s\n", error.message );
|
|
p_dbus_error_free( &error );
|
|
return 1;
|
|
}
|
|
|
|
if (p_dbus_connection_add_filter( connection, udisks_filter, NULL, NULL ))
|
|
p_dbus_bus_add_match( connection, udisks_match, &error );
|
|
|
|
if (!udisks_enumerate_devices())
|
|
{
|
|
p_dbus_bus_remove_match( connection, udisks_match, &error );
|
|
p_dbus_connection_remove_filter( connection, udisks_filter, NULL );
|
|
|
|
#ifdef SONAME_LIBHAL
|
|
if (!hal_enumerate_devices())
|
|
{
|
|
p_dbus_error_free( &error );
|
|
return 1;
|
|
}
|
|
#endif
|
|
}
|
|
|
|
__TRY
|
|
{
|
|
while (p_dbus_connection_read_write_dispatch( connection, -1 )) /* nothing */ ;
|
|
}
|
|
__EXCEPT( assert_fault )
|
|
{
|
|
WARN( "dbus assertion failure, disabling support\n" );
|
|
return 1;
|
|
}
|
|
__ENDTRY;
|
|
|
|
return 0;
|
|
}
|
|
|
|
void initialize_dbus(void)
|
|
{
|
|
HANDLE handle;
|
|
|
|
#ifdef SONAME_LIBHAL
|
|
if (!load_hal_functions())
|
|
#endif
|
|
if (!load_dbus_functions()) return;
|
|
if (!(handle = CreateThread( NULL, 0, dbus_thread, NULL, 0, NULL ))) return;
|
|
CloseHandle( handle );
|
|
}
|
|
|
|
#else /* SONAME_LIBDBUS_1 */
|
|
|
|
void initialize_dbus(void)
|
|
{
|
|
TRACE( "Skipping, DBUS support not compiled in\n" );
|
|
}
|
|
|
|
#endif /* SONAME_LIBDBUS_1 */
|