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ntoskrnl.exe: Broadcast WM_DEVICECHANGE when a PnP device is added or removed. 

Signed-off-by: Zebediah Figura <zfigura@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Zebediah Figura 2018-08-16 18:37:43 -05:00 committed by Alexandre Julliard
parent f7904211a2
commit 6a4be7155d
2 changed files with 94 additions and 0 deletions
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1
dlls/ntoskrnl.exe/Makefile.in
View File

@ -1,6 +1,7 @@
MODULE = ntoskrnl.exe
IMPORTLIB = ntoskrnl
IMPORTS = advapi32
DELAYIMPORTS = user32
C_SRCS = \
instr.c \

93
dlls/ntoskrnl.exe/ntoskrnl.c
View File

@ -36,6 +36,9 @@
#include "winternl.h"
#include "excpt.h"
#include "winioctl.h"
#include "winbase.h"
#include "winuser.h"
#include "dbt.h"
#include "ddk/csq.h"
#include "ddk/ntddk.h"
#include "ddk/ntifs.h"
@ -145,6 +148,77 @@ static inline LPCSTR debugstr_us( const UNICODE_STRING *us )
return debugstr_wn( us->Buffer, us->Length / sizeof(WCHAR) );
}
static inline BOOL is_valid_hex(WCHAR c)
{
if (!(((c >= '0') && (c <= '9')) ||
((c >= 'a') && (c <= 'f')) ||
((c >= 'A') && (c <= 'F'))))
return FALSE;
return TRUE;
}
static const BYTE guid_conv_table[256] =
{
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20 */
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, 0, 0, 0, 0, /* 0x30 */
0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x40 */
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x50 */
0, 0xa, 0xb, 0xc, 0xd, 0xe, 0xf /* 0x60 */
};
static BOOL guid_from_string(const WCHAR *s, GUID *id)
{
int i;
if (!s || s[0] != '{')
{
memset( id, 0, sizeof (CLSID) );
return FALSE;
}
id->Data1 = 0;
for (i = 1; i < 9; i++)
{
if (!is_valid_hex(s[i])) return FALSE;
id->Data1 = (id->Data1 << 4) | guid_conv_table[s[i]];
}
if (s[9] != '-') return FALSE;
id->Data2 = 0;
for (i = 10; i < 14; i++)
{
if (!is_valid_hex(s[i])) return FALSE;
id->Data2 = (id->Data2 << 4) | guid_conv_table[s[i]];
}
if (s[14] != '-') return FALSE;
id->Data3 = 0;
for (i = 15; i < 19; i++)
{
if (!is_valid_hex(s[i])) return FALSE;
id->Data3 = (id->Data3 << 4) | guid_conv_table[s[i]];
}
if (s[19] != '-') return FALSE;
for (i = 20; i < 37; i += 2)
{
if (i == 24)
{
if (s[i] != '-') return FALSE;
i++;
}
if (!is_valid_hex(s[i]) || !is_valid_hex(s[i+1])) return FALSE;
id->Data4[(i-20)/2] = guid_conv_table[s[i]] << 4 | guid_conv_table[s[i+1]];
}
if (s[37] == '}')
return TRUE;
return FALSE;
}
static HANDLE get_device_manager(void)
{
static HANDLE device_manager;
@ -1208,17 +1282,22 @@ NTSTATUS WINAPI IoSetDeviceInterfaceState( UNICODE_STRING *name, BOOLEAN enable
const WCHAR hashW[] = {'#',0};
size_t namelen = name->Length / sizeof(WCHAR);
DEV_BROADCAST_DEVICEINTERFACE_W *broadcast;
HANDLE iface_key, control_key;
OBJECT_ATTRIBUTES attr = {0};
WCHAR *path, *refstr, *p;
UNICODE_STRING string;
NTSTATUS ret;
size_t len;
GUID class;
TRACE("(%s, %d)\n", debugstr_us(name), enable);
refstr = memrchrW(name->Buffer + 4, '\\', namelen - 4);
if (!guid_from_string( (refstr ? refstr : name->Buffer + namelen) - 38, &class ))
return STATUS_INVALID_PARAMETER;
len = strlenW(DeviceClassesW) + 38 + 1 + namelen + 2;
if (!(path = heap_alloc( len * sizeof(WCHAR) )))
@ -1255,6 +1334,20 @@ NTSTATUS WINAPI IoSetDeviceInterfaceState( UNICODE_STRING *name, BOOLEAN enable
}
heap_free( path );
len = offsetof(DEV_BROADCAST_DEVICEINTERFACE_W, dbcc_name[namelen + 1]);
if ((broadcast = heap_alloc( len )))
{
broadcast->dbcc_size = len;
broadcast->dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
broadcast->dbcc_classguid = class;
lstrcpynW( broadcast->dbcc_name, name->Buffer, namelen + 1 );
BroadcastSystemMessageW( BSF_FORCEIFHUNG | BSF_QUERY, NULL, WM_DEVICECHANGE,
enable ? DBT_DEVICEARRIVAL : DBT_DEVICEREMOVECOMPLETE, (LPARAM)broadcast );
heap_free( broadcast );
}
return ret;
}