https://git.reactos.org/?p=reactos.git;a=commitdiff;h=f3ac86713d7b519910e28430b5909c164b8fbe44
commit f3ac86713d7b519910e28430b5909c164b8fbe44 Author: Eric Kohl <[email protected]> AuthorDate: Tue Apr 19 00:09:27 2022 +0200 Commit: Eric Kohl <[email protected]> CommitDate: Tue Apr 19 00:09:54 2022 +0200 [UMPNPMGR] PNP_CreateDevInst: A phantom device can only be created if the device did not exist before --- base/services/umpnpmgr/rpcserver.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/base/services/umpnpmgr/rpcserver.c b/base/services/umpnpmgr/rpcserver.c index 140f1efa91a..25461975ee0 100644 --- a/base/services/umpnpmgr/rpcserver.c +++ b/base/services/umpnpmgr/rpcserver.c @@ -3052,6 +3052,7 @@ PNP_CreateDevInst( PNP_RPC_STRING_LEN ulLength, DWORD ulFlags) { + HKEY hKey = NULL; CONFIGRET ret = CR_SUCCESS; DPRINT("PNP_CreateDevInst(%p %S %S %lu 0x%08lx)\n", @@ -3075,8 +3076,18 @@ PNP_CreateDevInst( return ret; } + /* Try to open the device instance key */ + RegOpenKeyEx(hEnumKey, pszDeviceID, 0, KEY_READ | KEY_WRITE, &hKey); + if (ulFlags & CM_CREATE_DEVNODE_PHANTOM) { + /* Fail, if the device already exists */ + if (hKey != NULL) + { + ret = CR_ALREADY_SUCH_DEVINST; + goto done; + } + /* Create the phantom device instance */ ret = CreateDeviceInstance(pszDeviceID, TRUE); } @@ -3086,6 +3097,10 @@ PNP_CreateDevInst( ret = CreateDeviceInstance(pszDeviceID, FALSE); } +done: + if (hKey) + RegCloseKey(hKey); + DPRINT("PNP_CreateDevInst() done (returns %lx)\n", ret); return ret;
