Ros-diffs March 2019

ros-diffs@reactos.org

36 participants
217 discussions

[reactos] 01/01: [NTOSKRNL] Fix MSVC2010 build

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=1114b89952ab6d92d7c61… commit 1114b89952ab6d92d7c6156f6c8f0fba2f32e334 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Sat Mar 2 11:10:37 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Sat Mar 2 11:10:37 2019 +0100 [NTOSKRNL] Fix MSVC2010 build --- ntoskrnl/ex/uuid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ntoskrnl/ex/uuid.c b/ntoskrnl/ex/uuid.c index 8c8270a3db..fdda755214 100644 --- a/ntoskrnl/ex/uuid.c +++ b/ntoskrnl/ex/uuid.c @@ -45,7 +45,7 @@ BOOLEAN ExpUuidSequenceNumberNotSaved = FALSE; UUID_CACHED_VALUES_STRUCT ExpUuidCachedValues = {0ULL, 0xFFFFFFFF, 0, 0, { 0x80, 0x6E, 0x6F, 0x6E, 0x69, 0x63}}; BOOLEAN ExpUuidCacheValid = FALSE; ULONG ExpLuidIncrement = 1; -LARGE_INTEGER ExpLuid = {.LowPart = 0x3e9, .HighPart = 0x0}; +LARGE_INTEGER ExpLuid = {{0x3e9, 0x0}}; /* FUNCTIONS ****************************************************************/

5 years, 6 months

[reactos] 01/01: [NTOSKRNL] Fix ClockDiff aka fix MSVC build

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=c2b6c3a69ff133c3370a1… commit c2b6c3a69ff133c3370a118a1abaa48dee91122a Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Sat Mar 2 10:45:34 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Sat Mar 2 10:45:34 2019 +0100 [NTOSKRNL] Fix ClockDiff aka fix MSVC build --- ntoskrnl/ex/uuid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/ntoskrnl/ex/uuid.c b/ntoskrnl/ex/uuid.c index 1f41bdb122..8c8270a3db 100644 --- a/ntoskrnl/ex/uuid.c +++ b/ntoskrnl/ex/uuid.c @@ -261,7 +261,7 @@ ExpAllocateUuids(PULARGE_INTEGER Time, else { *Range = TIME_FRAME; - ClockDiff.QuadPart -= TIME_FRAME; + ClockDiff.QuadPart = TimeDiff.QuadPart - TIME_FRAME; --ClockDiff.HighPart; }

5 years, 6 months

[reactos] 01/01: [NTOSKRNL] Add a test for ExUuidCreate

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=bbfb3caa3609bb1716a14… commit bbfb3caa3609bb1716a146efc5437dc4c6e4a910 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Sat Mar 2 10:29:26 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Sat Mar 2 10:30:00 2019 +0100 [NTOSKRNL] Add a test for ExUuidCreate --- modules/rostests/kmtests/CMakeLists.txt | 1 + modules/rostests/kmtests/kmtest_drv/testlist.c | 2 ++ modules/rostests/kmtests/ntos_ex/ExUuid.c | 21 +++++++++++++++++++++ 3 files changed, 24 insertions(+) diff --git a/modules/rostests/kmtests/CMakeLists.txt b/modules/rostests/kmtests/CMakeLists.txt index feb522be36..8d56d61b2d 100644 --- a/modules/rostests/kmtests/CMakeLists.txt +++ b/modules/rostests/kmtests/CMakeLists.txt @@ -54,6 +54,7 @@ list(APPEND KMTEST_DRV_SOURCE ntos_ex/ExSequencedList.c ntos_ex/ExSingleList.c ntos_ex/ExTimer.c + ntos_ex/ExUuid.c ntos_fsrtl/FsRtlDissect.c ntos_fsrtl/FsRtlExpression.c ntos_fsrtl/FsRtlLegal.c diff --git a/modules/rostests/kmtests/kmtest_drv/testlist.c b/modules/rostests/kmtests/kmtest_drv/testlist.c index fea8708b4f..11d63bbad2 100644 --- a/modules/rostests/kmtests/kmtest_drv/testlist.c +++ b/modules/rostests/kmtests/kmtest_drv/testlist.c @@ -19,6 +19,7 @@ KMT_TESTFUNC Test_ExResource; KMT_TESTFUNC Test_ExSequencedList; KMT_TESTFUNC Test_ExSingleList; KMT_TESTFUNC Test_ExTimer; +KMT_TESTFUNC Test_ExUuid; KMT_TESTFUNC Test_FsRtlDissect; KMT_TESTFUNC Test_FsRtlExpression; KMT_TESTFUNC Test_FsRtlLegal; @@ -90,6 +91,7 @@ const KMT_TEST TestList[] = { "ExSequencedList", Test_ExSequencedList }, { "ExSingleList", Test_ExSingleList }, { "-ExTimer", Test_ExTimer }, + { "ExUuid", Test_ExUuid }, { "Example", Test_Example }, { "FsRtlDissect", Test_FsRtlDissect }, { "FsRtlExpression", Test_FsRtlExpression }, diff --git a/modules/rostests/kmtests/ntos_ex/ExUuid.c b/modules/rostests/kmtests/ntos_ex/ExUuid.c new file mode 100644 index 0000000000..2fb0bba8dc --- /dev/null +++ b/modules/rostests/kmtests/ntos_ex/ExUuid.c @@ -0,0 +1,21 @@ +/* + * PROJECT: ReactOS kernel-mode tests + * LICENSE: LGPLv2+ - See COPYING.LIB in the top level directory + * PURPOSE: Kernel-Mode Test Suite UUIDs test + * PROGRAMMER: Pierre Schweitzer <pierre(a)reactos.org> + */ + +#include <kmt_test.h> + +#define NDEBUG +#include <debug.h> + +START_TEST(ExUuid) +{ + UUID Uuid; + NTSTATUS Status; + + Status = ExUuidCreate(&Uuid); + ok(Status == STATUS_SUCCESS, "ExUuidCreate returned unexpected status: %lx\n", Status); + ok((Uuid.Data3 & 0x1000) == 0x1000, "Invalid UUID version: %x\n", (Uuid.Data3 & 0xF000)); +}

5 years, 6 months

[reactos] 01/01: [SNDVOL32] In record mode, rename the 'Mute' autocheckbox to 'Select', turn it into a checkbox and make it behave like a radiobutton.

by Eric Kohl

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=28309096df136f9c15fe5… commit 28309096df136f9c15fe53d4225fe87dd0331dd4 Author: Eric Kohl <eric.kohl(a)reactos.org> AuthorDate: Fri Mar 1 22:01:14 2019 +0100 Commit: Eric Kohl <eric.kohl(a)reactos.org> CommitDate: Fri Mar 1 22:01:14 2019 +0100 [SNDVOL32] In record mode, rename the 'Mute' autocheckbox to 'Select', turn it into a checkbox and make it behave like a radiobutton. --- base/applications/sndvol32/dialog.c | 17 ++++++++++++++++- base/applications/sndvol32/sndvol32.c | 28 ++++++++++++++++++++-------- 2 files changed, 36 insertions(+), 9 deletions(-) diff --git a/base/applications/sndvol32/dialog.c b/base/applications/sndvol32/dialog.c index 781a59ea44..5a52272ed8 100644 --- a/base/applications/sndvol32/dialog.c +++ b/base/applications/sndvol32/dialog.c @@ -674,6 +674,7 @@ VOID LoadDialogCtrls( PPREFERENCES_CONTEXT PrefContext) { + WCHAR szBuffer[64]; HWND hDlgCtrl; RECT statusRect; UINT i; @@ -720,9 +721,23 @@ LoadDialogCtrls( SWP_NOZORDER); } - /* Resize the vertical line separators */ + if (PrefContext->MixerWindow->MixerId == RECORD_MIXER) + LoadStringW(hAppInstance, IDS_SELECT, szBuffer, ARRAYSIZE(szBuffer)); + for (i = 0; i < PrefContext->MixerWindow->DialogCount; i++) { + if (PrefContext->MixerWindow->MixerId == RECORD_MIXER) + { + hDlgCtrl = GetDlgItem(PrefContext->MixerWindow->hWnd, (i + 1) * IDC_LINE_SWITCH); + + /* Turn the autocheckbox into a checkbox */ + SetWindowLongPtr(hDlgCtrl, GWL_STYLE, (GetWindowLongPtr(hDlgCtrl, GWL_STYLE) & ~BS_AUTOCHECKBOX) | BS_CHECKBOX); + + /* Change text from 'Mute' to 'Select' */ + SetWindowTextW(hDlgCtrl, szBuffer); + } + + /* Resize the vertical line separator */ hDlgCtrl = GetDlgItem(PrefContext->MixerWindow->hWnd, (i + 1) * IDC_LINE_SEP); if (hDlgCtrl != NULL) { diff --git a/base/applications/sndvol32/sndvol32.c b/base/applications/sndvol32/sndvol32.c index 9a5578dc96..64ce3ac556 100644 --- a/base/applications/sndvol32/sndvol32.c +++ b/base/applications/sndvol32/sndvol32.c @@ -1000,16 +1000,28 @@ MainWindowProc(HWND hwnd, /* compute window id of line name static control */ CtrlID = LineOffset * IDC_LINE_NAME; - /* get line name */ - if (GetDlgItemTextW(hwnd, CtrlID, Context.LineName, MIXER_LONG_NAME_CHARS) != 0) + if (Preferences.MixerWindow->Mixer->MixerId == PLAY_MIXER) + { + /* get line name */ + if (GetDlgItemTextW(hwnd, CtrlID, Context.LineName, MIXER_LONG_NAME_CHARS) != 0) + { + /* setup context */ + Context.SliderPos = SendMessage((HWND)lParam, BM_GETCHECK, 0, 0); + Context.bVertical = FALSE; + Context.bSwitch = TRUE; + + /* set volume */ + SndMixerEnumConnections(Preferences.MixerWindow->Mixer, Preferences.SelectedLine, SetVolumeCallback, (LPVOID)&Context); + } + } + else if (Preferences.MixerWindow->Mixer->MixerId == RECORD_MIXER) { - /* setup context */ - Context.SliderPos = SendMessage((HWND)lParam, BM_GETCHECK, 0, 0); - Context.bVertical = FALSE; - Context.bSwitch = TRUE; + UINT i; - /* set volume */ - SndMixerEnumConnections(Preferences.MixerWindow->Mixer, Preferences.SelectedLine, SetVolumeCallback, (LPVOID)&Context); + for (i = 0; i < Preferences.MixerWindow->DialogCount; i++) + { + SendDlgItemMessageW(hwnd, (i + 1) * IDC_LINE_SWITCH, BM_SETCHECK, (WPARAM)((i + 1) == LineOffset), 0); + } } } else if (CtrlID % IDC_LINE_ADVANCED == 0)

5 years, 6 months

[reactos] 03/03: [NTOSKRNL] Rewrite/fix our UUID generation implementation So that it matches Windows behavior Also implement ExUuidCreate that will generate UUID version 1

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=eb8b481cd4f32472788c6… commit eb8b481cd4f32472788c6e43c6a3a62a7d396d3b Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Feb 27 21:12:32 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Fri Mar 1 08:22:48 2019 +0100 [NTOSKRNL] Rewrite/fix our UUID generation implementation So that it matches Windows behavior Also implement ExUuidCreate that will generate UUID version 1 The implementation is based on the RFC 4122 --- ntoskrnl/ex/init.c | 6 +- ntoskrnl/ex/uuid.c | 458 +++++++++++++++++++++++++++-------------- ntoskrnl/include/internal/ex.h | 9 +- ntoskrnl/include/internal/se.h | 5 - ntoskrnl/se/semgr.c | 2 +- 5 files changed, 321 insertions(+), 159 deletions(-) diff --git a/ntoskrnl/ex/init.c b/ntoskrnl/ex/init.c index 10be805374..1e31003af6 100644 --- a/ntoskrnl/ex/init.c +++ b/ntoskrnl/ex/init.c @@ -711,7 +711,11 @@ ExpInitSystemPhase1(VOID) } /* Initialize UUIDs */ - ExpInitUuids(); + if (ExpUuidInitialization() == FALSE) + { + DPRINT1("Executive: Uuid initialization failed\n"); + return FALSE; + } /* Initialize keyed events */ if (ExpInitializeKeyedEventImplementation() == FALSE) diff --git a/ntoskrnl/ex/uuid.c b/ntoskrnl/ex/uuid.c index 459b957270..1f41bdb122 100644 --- a/ntoskrnl/ex/uuid.c +++ b/ntoskrnl/ex/uuid.c @@ -5,6 +5,7 @@ * PURPOSE: UUID generator * PROGRAMMERS: Eric Kohl * Thomas Weidenmueller + * Pierre Schweitzer */ /* INCLUDES *****************************************************************/ @@ -25,75 +26,81 @@ #define SECS_15_OCT_1582_TO_1601 ((17 + 30 + 31 + 365 * 18 + 5) * SECSPERDAY) #define TICKS_15_OCT_1582_TO_1601 ((ULONGLONG)SECS_15_OCT_1582_TO_1601 * TICKSPERSEC) +/* 10000 in 100-ns model = 0,1 microsecond */ +#define TIME_FRAME 10000 + #if defined (ALLOC_PRAGMA) -#pragma alloc_text(INIT, ExpInitUuids) +#pragma alloc_text(INIT, ExpUuidInitialization) +#pragma alloc_text(INIT, ExLuidInitialization) #endif /* GLOBALS ****************************************************************/ -static FAST_MUTEX ExpUuidLock; -static ULARGE_INTEGER UuidLastTime; -static ULONG UuidSequence; -static BOOLEAN UuidSequenceInitialized = FALSE; -static BOOLEAN UuidSequenceChanged = FALSE; -static UCHAR UuidSeed[SEED_BUFFER_SIZE]; -static ULONG UuidCount; -static LARGE_INTEGER LuidIncrement; -static LARGE_INTEGER LuidValue; -UUID_CACHED_VALUES_STRUCT ExpUuidCachedValues = { 0ULL, 0xFFFFFFFF, 0, 0, { 0x80, 0x6E, 0x6F, 0x6E, 0x69, 0x63 } }; +FAST_MUTEX ExpUuidLock; +LARGE_INTEGER ExpUuidLastTimeAllocated; +ULONG ExpUuidSequenceNumber = 0; +BOOLEAN ExpUuidSequenceNumberValid; +BOOLEAN ExpUuidSequenceNumberNotSaved = FALSE; +UUID_CACHED_VALUES_STRUCT ExpUuidCachedValues = {0ULL, 0xFFFFFFFF, 0, 0, { 0x80, 0x6E, 0x6F, 0x6E, 0x69, 0x63}}; +BOOLEAN ExpUuidCacheValid = FALSE; +ULONG ExpLuidIncrement = 1; +LARGE_INTEGER ExpLuid = {.LowPart = 0x3e9, .HighPart = 0x0}; /* FUNCTIONS ****************************************************************/ -VOID +/* + * @implemented + */ +BOOLEAN INIT_FUNCTION NTAPI -ExpInitUuids(VOID) +ExpUuidInitialization(VOID) { ExInitializeFastMutex(&ExpUuidLock); - KeQuerySystemTime((PLARGE_INTEGER)&UuidLastTime); - UuidLastTime.QuadPart += TICKS_15_OCT_1582_TO_1601; + ExpUuidSequenceNumberValid = FALSE; + KeQuerySystemTime(&ExpUuidLastTimeAllocated); - UuidCount = TICKS_PER_CLOCK_TICK; - RtlZeroMemory(UuidSeed, SEED_BUFFER_SIZE); + return TRUE; } -#define VALUE_BUFFER_SIZE 256 - +/* + * @implemented + */ +#define VALUE_BUFFER_SIZE 20 static NTSTATUS -ExpLoadUuidSequence(PULONG Sequence) +ExpUuidLoadSequenceNumber(PULONG Sequence) { UCHAR ValueBuffer[VALUE_BUFFER_SIZE]; PKEY_VALUE_PARTIAL_INFORMATION ValueInfo; OBJECT_ATTRIBUTES ObjectAttributes; - UNICODE_STRING Name; + UNICODE_STRING KeyName, ValueName; HANDLE KeyHandle; ULONG ValueLength; NTSTATUS Status; - RtlInitUnicodeString(&Name, - L"\\Registry\\Machine\\Software\\Microsoft\\Rpc"); + PAGED_CODE(); + + RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\Software\\Microsoft\\Rpc"); + RtlInitUnicodeString(&ValueName, L"UuidSequenceNumber"); + InitializeObjectAttributes(&ObjectAttributes, - &Name, - OBJ_CASE_INSENSITIVE, + &KeyName, + OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL); - Status = ZwOpenKey(&KeyHandle, - KEY_QUERY_VALUE, - &ObjectAttributes); + Status = ZwOpenKey(&KeyHandle, GENERIC_READ, &ObjectAttributes); if (!NT_SUCCESS(Status)) { DPRINT("ZwOpenKey() failed (Status %lx)\n", Status); return Status; } - RtlInitUnicodeString(&Name, L"UuidSequenceNumber"); - ValueInfo = (PKEY_VALUE_PARTIAL_INFORMATION)ValueBuffer; Status = ZwQueryValueKey(KeyHandle, - &Name, + &ValueName, KeyValuePartialInformation, ValueBuffer, VALUE_BUFFER_SIZE, @@ -105,6 +112,11 @@ ExpLoadUuidSequence(PULONG Sequence) return Status; } + if (ValueInfo->Type != REG_DWORD || ValueInfo->DataLength != sizeof(DWORD)) + { + return STATUS_UNSUCCESSFUL; + } + *Sequence = *((PULONG)ValueInfo->Data); DPRINT("Loaded sequence %lx\n", *Sequence); @@ -113,24 +125,29 @@ ExpLoadUuidSequence(PULONG Sequence) } #undef VALUE_BUFFER_SIZE - +/* + * @implemented + */ static NTSTATUS -ExpSaveUuidSequence(PULONG Sequence) +ExpUuidSaveSequenceNumber(PULONG Sequence) { OBJECT_ATTRIBUTES ObjectAttributes; - UNICODE_STRING Name; + UNICODE_STRING KeyName, ValueName; HANDLE KeyHandle; NTSTATUS Status; - RtlInitUnicodeString(&Name, - L"\\Registry\\Machine\\Software\\Microsoft\\Rpc"); + PAGED_CODE(); + + RtlInitUnicodeString(&KeyName, L"\\Registry\\Machine\\Software\\Microsoft\\Rpc"); + RtlInitUnicodeString(&ValueName, L"UuidSequenceNumber"); + InitializeObjectAttributes(&ObjectAttributes, - &Name, - OBJ_CASE_INSENSITIVE, + &KeyName, + OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE, NULL, NULL); Status = ZwOpenKey(&KeyHandle, - KEY_SET_VALUE, + GENERIC_READ | GENERIC_WRITE, &ObjectAttributes); if (!NT_SUCCESS(Status)) { @@ -138,9 +155,8 @@ ExpSaveUuidSequence(PULONG Sequence) return Status; } - RtlInitUnicodeString(&Name, L"UuidSequenceNumber"); Status = ZwSetValueKey(KeyHandle, - &Name, + &ValueName, 0, REG_DWORD, Sequence, @@ -154,98 +170,196 @@ ExpSaveUuidSequence(PULONG Sequence) return Status; } - +/* + * @implemented + * Warning! This function must be called + * with ExpUuidLock held! + */ static VOID -ExpGetRandomUuidSequence(PULONG Sequence) +ExpUuidSaveSequenceNumberIf(VOID) { - LARGE_INTEGER Counter; - LARGE_INTEGER Frequency; - ULONG Value; - - Counter = KeQueryPerformanceCounter(&Frequency); - Value = Counter.u.LowPart ^ Counter.u.HighPart; + NTSTATUS Status; - *Sequence = *Sequence ^ Value; + PAGED_CODE(); - DPRINT("Sequence %lx\n", *Sequence); + /* Only save sequence if it has to */ + if (ExpUuidSequenceNumberNotSaved == TRUE) + { + Status = ExpUuidSaveSequenceNumber(&ExpUuidSequenceNumber); + if (NT_SUCCESS(Status)) + { + ExpUuidSequenceNumberNotSaved = FALSE; + } + } } - +/* + * @implemented + * Warning! This function must be called + * with ExpUuidLock held! + */ static NTSTATUS -ExpCreateUuids(PULARGE_INTEGER Time, - PULONG Range, - PULONG Sequence) +ExpAllocateUuids(PULARGE_INTEGER Time, + PULONG Range, + PULONG Sequence) { - /* - * Generate time element of the UUID. Account for going faster - * than our clock as well as the clock going backwards. - */ - while (1) - { - KeQuerySystemTime((PLARGE_INTEGER)Time); - Time->QuadPart += TICKS_15_OCT_1582_TO_1601; + NTSTATUS Status; + LARGE_INTEGER Counter, Frequency, CurrentTime, TimeDiff, ClockDiff; - if (Time->QuadPart > UuidLastTime.QuadPart) - { - UuidCount = 0; - break; - } + PAGED_CODE(); - if (Time->QuadPart < UuidLastTime.QuadPart) + /* Initialize sequence number */ + if (!ExpUuidSequenceNumberValid) + { + /* Try to load sequence number */ + Status = ExpUuidLoadSequenceNumber(&ExpUuidSequenceNumber); + if (NT_SUCCESS(Status)) { - (*Sequence)++; - UuidSequenceChanged = TRUE; - UuidCount = 0; - break; + ++ExpUuidSequenceNumber; } - - if (UuidCount < TICKS_PER_CLOCK_TICK) + else { - UuidCount++; - break; + /* If we cannot, generate a "true" random */ + Counter = KeQueryPerformanceCounter(&Frequency); + ExpUuidSequenceNumber ^= (ULONG_PTR)&Status ^ (ULONG_PTR)Sequence ^ Counter.LowPart ^ Counter.HighPart; } + + /* It's valid and to be saved */ + ExpUuidSequenceNumberValid = TRUE; + ExpUuidSequenceNumberNotSaved = TRUE; + } + + KeQuerySystemTime(&CurrentTime); + TimeDiff.QuadPart = CurrentTime.QuadPart - ExpUuidLastTimeAllocated.QuadPart; + /* If time went backwards, change sequence (see RFC example) */ + if (TimeDiff.QuadPart < 0) + { + ++ExpUuidSequenceNumber; + TimeDiff.QuadPart = 2 * TIME_FRAME; + + /* It's to be saved */ + ExpUuidSequenceNumberNotSaved = TRUE; + ExpUuidLastTimeAllocated.QuadPart = CurrentTime.QuadPart - 2 * TIME_FRAME; + } + + if (TimeDiff.QuadPart == 0) + { + return STATUS_RETRY; } - UuidLastTime.QuadPart = Time->QuadPart; - Time->QuadPart += UuidCount; + /* If time diff > 0,1ms, squash it to reduce it to keep our clock resolution */ + if (TimeDiff.HighPart > 0 || TimeDiff.QuadPart > TICKS_PER_CLOCK_TICK * TIME_FRAME) + { + TimeDiff.QuadPart = TICKS_PER_CLOCK_TICK * TIME_FRAME; + } + + if (TimeDiff.HighPart < 0 || TimeDiff.QuadPart <= TIME_FRAME) + { + *Range = TimeDiff.QuadPart; + ClockDiff.QuadPart = 0LL; + } + else + { + *Range = TIME_FRAME; + ClockDiff.QuadPart -= TIME_FRAME; + --ClockDiff.HighPart; + } - *Range = 10000; /* What does this mean? Ticks per millisecond?*/ + Time->QuadPart = CurrentTime.QuadPart - *Range - ClockDiff.QuadPart; + ExpUuidLastTimeAllocated.QuadPart = CurrentTime.QuadPart - ClockDiff.QuadPart; + *Sequence = ExpUuidSequenceNumber; return STATUS_SUCCESS; } -VOID -INIT_FUNCTION -NTAPI -ExpInitLuid(VOID) +/* + * @implemented + * Warning! This function must be called + * with ExpUuidLock held! + */ +static NTSTATUS +ExpUuidGetValues(PUUID_CACHED_VALUES_STRUCT CachedValues) { - LUID DummyLuidValue = SYSTEM_LUID; + NTSTATUS Status; + ULARGE_INTEGER Time; + ULONG Range; + ULONG Sequence; + + PAGED_CODE(); - LuidValue.u.HighPart = DummyLuidValue.HighPart; - LuidValue.u.LowPart = DummyLuidValue.LowPart; - LuidIncrement.QuadPart = 1; + /* Allocate UUIDs */ + Status = ExpAllocateUuids(&Time, &Range, &Sequence); + if (Status == STATUS_RETRY) + { + return Status; + } + + if (!NT_SUCCESS(Status)) + { + return STATUS_NO_MEMORY; + } + + /* We need at least one UUID */ + ASSERT(Range != 0); + + /* Set up our internal cache + * See format_uuid_v1 in RFC4122 for magic values + */ + CachedValues->ClockSeqLow = Sequence; + CachedValues->ClockSeqHiAndReserved = (Sequence & 0x3F00) >> 8; + CachedValues->ClockSeqHiAndReserved |= 0x80; + CachedValues->AllocatedCount = Range; + + /* + * Time is relative to UUID time + * And we set last time range for all the possibly + * returnable UUID + */ + Time.QuadPart += TICKS_15_OCT_1582_TO_1601; + CachedValues->Time = Time.QuadPart + (Range - 1); + + return STATUS_SUCCESS; } +/* + * @implemented + */ +BOOLEAN +INIT_FUNCTION +NTAPI +ExLuidInitialization(VOID) +{ + return TRUE; +} +/* + * @implemented + */ VOID NTAPI ExAllocateLocallyUniqueId(OUT LUID *LocallyUniqueId) { - LARGE_INTEGER NewLuid, PrevLuid; + LARGE_INTEGER PrevLuid; + LONGLONG NewLuid, CompLuid; - /* atomically increment the luid */ - do + /* Atomically increment the luid */ + PrevLuid.QuadPart = ExpLuid.QuadPart; + for (NewLuid = ExpLuid.QuadPart + ExpLuidIncrement; ; + NewLuid = PrevLuid.QuadPart + ExpLuidIncrement) { - PrevLuid = LuidValue; - NewLuid = RtlLargeIntegerAdd(PrevLuid, - LuidIncrement); - } while(ExInterlockedCompareExchange64(&LuidValue.QuadPart, - &NewLuid.QuadPart, - &PrevLuid.QuadPart, - NULL) != PrevLuid.QuadPart); - - LocallyUniqueId->LowPart = NewLuid.u.LowPart; - LocallyUniqueId->HighPart = NewLuid.u.HighPart; + CompLuid = InterlockedCompareExchange64(&ExpLuid.QuadPart, + NewLuid, + PrevLuid.QuadPart); + if (CompLuid == PrevLuid.QuadPart) + { + break; + } + + PrevLuid.QuadPart = CompLuid; + } + + LocallyUniqueId->LowPart = PrevLuid.LowPart; + LocallyUniqueId->HighPart = PrevLuid.HighPart; } @@ -256,9 +370,7 @@ NTSTATUS NTAPI NtAllocateLocallyUniqueId(OUT LUID *LocallyUniqueId) { - LUID NewLuid; KPROCESSOR_MODE PreviousMode; - NTSTATUS Status; PAGED_CODE(); /* Probe if user mode */ @@ -279,35 +391,91 @@ NtAllocateLocallyUniqueId(OUT LUID *LocallyUniqueId) } /* Do the allocation */ - ExAllocateLocallyUniqueId(&NewLuid); - Status = STATUS_SUCCESS; - - /* Write back LUID to caller */ - _SEH2_TRY - { - *LocallyUniqueId = NewLuid; - } - _SEH2_EXCEPT(ExSystemExceptionFilter()) - { - Status = _SEH2_GetExceptionCode(); - } - _SEH2_END; - return Status; + ExAllocateLocallyUniqueId(LocallyUniqueId); + return STATUS_SUCCESS; } /* - * @unimplemented + * @implemented */ NTSTATUS NTAPI ExUuidCreate(OUT UUID *Uuid) { - UNIMPLEMENTED; - return FALSE; + NTSTATUS Status; + LONG AllocatedCount; + LARGE_INTEGER Time; + BOOLEAN Valid; + + PAGED_CODE(); + + Status = STATUS_SUCCESS; + /* Loop until we have an UUID to return */ + while (TRUE) + { + /* Try to gather node values */ + do + { + Time.QuadPart = ExpUuidCachedValues.Time; + + RtlCopyMemory(&Uuid->Data4[0], + &ExpUuidCachedValues.NodeId[0], + SEED_BUFFER_SIZE); + Valid = ExpUuidCacheValid; + AllocatedCount = InterlockedDecrement(&ExpUuidCachedValues.AllocatedCount); + } + /* Loop till we can do it without being disturbed */ + while (Time.QuadPart != ExpUuidCachedValues.Time); + + /* We have more than an allocated UUID left, that's OK to return! */ + if (AllocatedCount >= 0) + { + break; + } + + /* + * Here, we're out of UUIDs, we need to allocate more + * We need to be alone to do it, so lock the mutex + */ + ExAcquireFastMutex(&ExpUuidLock); + if (Time.QuadPart == ExpUuidCachedValues.Time) + { + /* If allocation fails, bail out! */ + Status = ExpUuidGetValues(&ExpUuidCachedValues); + if (Status != STATUS_SUCCESS) + { + ExReleaseFastMutex(&ExpUuidLock); + return Status; + } + + /* Save our current sequence if changed */ + ExpUuidSaveSequenceNumberIf(); + } + ExReleaseFastMutex(&ExpUuidLock); + } + + /* + * Once here, we've got an UUID to return + * But, if our init wasn't sane, then, make + * sure it's only used locally + */ + if (!Valid) + { + Status = RPC_NT_UUID_LOCAL_ONLY; + } + + /* Set our timestamp - see RFC4211 */ + Time.QuadPart -= AllocatedCount; + Uuid->Data1 = Time.LowPart; + Uuid->Data2 = Time.HighPart; + /* We also set the bit for GUIDv1 */ + Uuid->Data3 = ((Time.HighPart >> 16) & 0x0FFF) | 0x1000; + + return Status; } /* - * @unimplemented + * @implemented */ NTSTATUS NTAPI @@ -317,7 +485,7 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, OUT PUCHAR Seed) { ULARGE_INTEGER IntTime; - ULONG IntRange; + ULONG IntRange, IntSequence; NTSTATUS Status; KPROCESSOR_MODE PreviousMode; @@ -352,40 +520,22 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, _SEH2_END; } + /* During allocation we must be alone */ ExAcquireFastMutex(&ExpUuidLock); - if (!UuidSequenceInitialized) - { - Status = ExpLoadUuidSequence(&UuidSequence); - if (NT_SUCCESS(Status)) - { - UuidSequence++; - } - else - { - ExpGetRandomUuidSequence(&UuidSequence); - } - - UuidSequenceInitialized = TRUE; - UuidSequenceChanged = TRUE; - } - - Status = ExpCreateUuids(&IntTime, - &IntRange, - &UuidSequence); + Status = ExpAllocateUuids(&IntTime, + &IntRange, + &IntSequence); if (!NT_SUCCESS(Status)) { ExReleaseFastMutex(&ExpUuidLock); return Status; } - if (UuidSequenceChanged) - { - Status = ExpSaveUuidSequence(&UuidSequence); - if (NT_SUCCESS(Status)) - UuidSequenceChanged = FALSE; - } + /* If sequence number was changed, save it */ + ExpUuidSaveSequenceNumberIf(); + /* Allocation done, so we can release */ ExReleaseFastMutex(&ExpUuidLock); /* Write back UUIDs to caller */ @@ -393,10 +543,10 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, { Time->QuadPart = IntTime.QuadPart; *Range = IntRange; - *Sequence = UuidSequence; + *Sequence = IntSequence; RtlCopyMemory(Seed, - UuidSeed, + &ExpUuidCachedValues.NodeId[0], SEED_BUFFER_SIZE); Status = STATUS_SUCCESS; @@ -453,7 +603,15 @@ NtSetUuidSeed(IN PUCHAR Seed) /* Check for buffer validity and then copy it to our seed */ ProbeForRead(Seed, SEED_BUFFER_SIZE, sizeof(UCHAR)); - RtlCopyMemory(UuidSeed, Seed, SEED_BUFFER_SIZE); + RtlCopyMemory(&ExpUuidCachedValues.NodeId[0], Seed, SEED_BUFFER_SIZE); + + /* + * According to RFC 4122, UUID seed is based on MAC addresses + * If it is randomly set, then, it must have its multicast be set + * to be valid and avoid collisions + * Reflect it here + */ + ExpUuidCacheValid = ~(*Seed >> 7) & 1; Status = STATUS_SUCCESS; } diff --git a/ntoskrnl/include/internal/ex.h b/ntoskrnl/include/internal/ex.h index 2072a6a31c..52e58bffbe 100644 --- a/ntoskrnl/include/internal/ex.h +++ b/ntoskrnl/include/internal/ex.h @@ -236,9 +236,14 @@ NTAPI ExpInitializeCallbacks(VOID); INIT_FUNCTION -VOID +BOOLEAN +NTAPI +ExpUuidInitialization(VOID); + +INIT_FUNCTION +BOOLEAN NTAPI -ExpInitUuids(VOID); +ExLuidInitialization(VOID); INIT_FUNCTION VOID diff --git a/ntoskrnl/include/internal/se.h b/ntoskrnl/include/internal/se.h index e2285fd29d..aec259cdb7 100644 --- a/ntoskrnl/include/internal/se.h +++ b/ntoskrnl/include/internal/se.h @@ -248,11 +248,6 @@ BOOLEAN NTAPI SeInitSystem(VOID); -INIT_FUNCTION -VOID -NTAPI -ExpInitLuid(VOID); - INIT_FUNCTION VOID NTAPI diff --git a/ntoskrnl/se/semgr.c b/ntoskrnl/se/semgr.c index 3156e64227..18768c75ff 100644 --- a/ntoskrnl/se/semgr.c +++ b/ntoskrnl/se/semgr.c @@ -97,7 +97,7 @@ SepInitializationPhase0(VOID) { PAGED_CODE(); - ExpInitLuid(); + if (!ExLuidInitialization()) return FALSE; if (!SepInitSecurityIDs()) return FALSE; if (!SepInitDACLs()) return FALSE; if (!SepInitSDs()) return FALSE;

5 years, 6 months

[reactos] 02/03: [NTOSKRNL] Introduce the UUID_CACHED_VALUES_STRUCT structure

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=2d9673c68fd6ce9d8749a… commit 2d9673c68fd6ce9d8749aac0ed3c6bf04c1ba32a Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Feb 27 09:02:30 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Fri Mar 1 08:22:47 2019 +0100 [NTOSKRNL] Introduce the UUID_CACHED_VALUES_STRUCT structure Source: https://blog.48bits.com/el-codigo-ntoskvinci/ --- ntoskrnl/ex/uuid.c | 1 + ntoskrnl/include/internal/ex.h | 9 +++++++++ 2 files changed, 10 insertions(+) diff --git a/ntoskrnl/ex/uuid.c b/ntoskrnl/ex/uuid.c index 60103f04b4..459b957270 100644 --- a/ntoskrnl/ex/uuid.c +++ b/ntoskrnl/ex/uuid.c @@ -41,6 +41,7 @@ static UCHAR UuidSeed[SEED_BUFFER_SIZE]; static ULONG UuidCount; static LARGE_INTEGER LuidIncrement; static LARGE_INTEGER LuidValue; +UUID_CACHED_VALUES_STRUCT ExpUuidCachedValues = { 0ULL, 0xFFFFFFFF, 0, 0, { 0x80, 0x6E, 0x6F, 0x6E, 0x69, 0x63 } }; /* FUNCTIONS ****************************************************************/ diff --git a/ntoskrnl/include/internal/ex.h b/ntoskrnl/include/internal/ex.h index 2eaf8d2da0..2072a6a31c 100644 --- a/ntoskrnl/include/internal/ex.h +++ b/ntoskrnl/include/internal/ex.h @@ -167,6 +167,15 @@ ExGetPoolTagInfo( IN OUT PULONG ReturnLength OPTIONAL ); +typedef struct _UUID_CACHED_VALUES_STRUCT +{ + ULONGLONG Time; + LONG AllocatedCount; + UCHAR ClockSeqHiAndReserved; + UCHAR ClockSeqLow; + UCHAR NodeId [ 6 ] ; +} UUID_CACHED_VALUES_STRUCT, *PUUID_CACHED_VALUES_STRUCT; + /* INITIALIZATION FUNCTIONS *************************************************/ INIT_FUNCTION

5 years, 6 months

[reactos] 01/03: [NTOSKRNL] UuidMutex -> ExpUuidLock

by Pierre Schweitzer

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=81c88c1029b3569a560b1… commit 81c88c1029b3569a560b1d32736a03bf0cb05ff5 Author: Pierre Schweitzer <pierre(a)reactos.org> AuthorDate: Wed Feb 27 08:54:48 2019 +0100 Commit: Pierre Schweitzer <pierre(a)reactos.org> CommitDate: Fri Mar 1 08:22:47 2019 +0100 [NTOSKRNL] UuidMutex -> ExpUuidLock --- ntoskrnl/ex/uuid.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/ntoskrnl/ex/uuid.c b/ntoskrnl/ex/uuid.c index cae12d7bd1..60103f04b4 100644 --- a/ntoskrnl/ex/uuid.c +++ b/ntoskrnl/ex/uuid.c @@ -32,7 +32,7 @@ /* GLOBALS ****************************************************************/ -static FAST_MUTEX UuidMutex; +static FAST_MUTEX ExpUuidLock; static ULARGE_INTEGER UuidLastTime; static ULONG UuidSequence; static BOOLEAN UuidSequenceInitialized = FALSE; @@ -49,7 +49,7 @@ INIT_FUNCTION NTAPI ExpInitUuids(VOID) { - ExInitializeFastMutex(&UuidMutex); + ExInitializeFastMutex(&ExpUuidLock); KeQuerySystemTime((PLARGE_INTEGER)&UuidLastTime); UuidLastTime.QuadPart += TICKS_15_OCT_1582_TO_1601; @@ -351,7 +351,7 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, _SEH2_END; } - ExAcquireFastMutex(&UuidMutex); + ExAcquireFastMutex(&ExpUuidLock); if (!UuidSequenceInitialized) { @@ -374,7 +374,7 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, &UuidSequence); if (!NT_SUCCESS(Status)) { - ExReleaseFastMutex(&UuidMutex); + ExReleaseFastMutex(&ExpUuidLock); return Status; } @@ -385,7 +385,7 @@ NtAllocateUuids(OUT PULARGE_INTEGER Time, UuidSequenceChanged = FALSE; } - ExReleaseFastMutex(&UuidMutex); + ExReleaseFastMutex(&ExpUuidLock); /* Write back UUIDs to caller */ _SEH2_TRY

5 years, 6 months

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