https://git.reactos.org/?p=reactos.git;a=commitdiff;h=5ecc05003d2a7cfda9f6aff299188b39c92ef273
commit 5ecc05003d2a7cfda9f6aff299188b39c92ef273 Author: Pierre Schweitzer <[email protected]> AuthorDate: Mon Jun 10 12:30:49 2019 +0200 Commit: Pierre Schweitzer <[email protected]> CommitDate: Mon Jun 10 12:30:49 2019 +0200 [NTOSKRNL] On session last reference removal, dereference LUID device map --- ntoskrnl/se/srm.c | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) diff --git a/ntoskrnl/se/srm.c b/ntoskrnl/se/srm.c index f0cc7341093..9134ebadb5d 100644 --- a/ntoskrnl/se/srm.c +++ b/ntoskrnl/se/srm.c @@ -392,7 +392,7 @@ SepRmReferenceLogonSession( if (RtlEqualLuid(&CurrentSession->LogonId, LogonLuid)) { /* Reference the session */ - CurrentSession->ReferenceCount += 1; + ++CurrentSession->ReferenceCount; DPRINT("ReferenceCount: %lu\n", CurrentSession->ReferenceCount); /* Release the database lock */ @@ -409,10 +409,21 @@ SepRmReferenceLogonSession( } +NTSTATUS +SepCleanupLUIDDeviceMapDirectory( + PLUID LogonLuid) +{ + UNIMPLEMENTED; + return STATUS_NOT_IMPLEMENTED; +} + + NTSTATUS SepRmDereferenceLogonSession( PLUID LogonLuid) { + ULONG RefCount; + PDEVICE_MAP DeviceMap; PSEP_LOGON_SESSION_REFERENCES CurrentSession; DPRINT("SepRmDereferenceLogonSession(%08lx:%08lx)\n", @@ -430,12 +441,25 @@ SepRmDereferenceLogonSession( if (RtlEqualLuid(&CurrentSession->LogonId, LogonLuid)) { /* Dereference the session */ - CurrentSession->ReferenceCount -= 1; + RefCount = --CurrentSession->ReferenceCount; DPRINT("ReferenceCount: %lu\n", CurrentSession->ReferenceCount); /* Release the database lock */ KeReleaseGuardedMutex(&SepRmDbLock); + /* We're done with the session */ + if (RefCount == 0) + { + /* Get rid of the LUID device map */ + DeviceMap = CurrentSession->pDeviceMap; + if (DeviceMap != NULL) + { + CurrentSession->pDeviceMap = NULL; + SepCleanupLUIDDeviceMapDirectory(LogonLuid); + ObfDereferenceDeviceMap(DeviceMap); + } + } + return STATUS_SUCCESS; } }
