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windows: add NtSetEaFile, NtQueryEaFile and NtQueryInformationFile

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unix package already provides support for working with file extended
attributes via Fsetxattr and Fgetxattr syscalls. Windows offers a similar
feature implemented by means of NtSetEaFile and NtQueryEaFile syscalls.
Those syscalls are provided by this patch.

Additionally, NtQueryInformationFile syscall is added. It is required
for correct implementation of extended attribute support in library
code, as correct invocation of NtQueryEaFile relies on file information
returned by said syscall. It also amends the previously accepted
NtSetInformationFile syscall.

Fixes golang/go#78672

Change-Id: Ia4ba037eb2777ba02a953a57ec1d365aad17cac5
Reviewed-on: https://go-review.googlesource.com/c/sys/+/766800
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
This commit is contained in:
Alex Dubov
2026-05-13 22:59:11 -07:00
committed by Alex Brainman
parent 04396e85d4
commit e4444cbaaa
4 changed files with 342 additions and 1 deletions
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windows/syscall_windows.go
+3
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@@ -452,6 +452,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys RtlInitString(destinationString *NTString, sourceString *byte) = ntdll.RtlInitString
//sys NtCreateFile(handle *Handle, access uint32, oa *OBJECT_ATTRIBUTES, iosb *IO_STATUS_BLOCK, allocationSize *int64, attributes uint32, share uint32, disposition uint32, options uint32, eabuffer uintptr, ealength uint32) (ntstatus error) = ntdll.NtCreateFile
//sys NtCreateNamedPipeFile(pipe *Handle, access uint32, oa *OBJECT_ATTRIBUTES, iosb *IO_STATUS_BLOCK, share uint32, disposition uint32, options uint32, typ uint32, readMode uint32, completionMode uint32, maxInstances uint32, inboundQuota uint32, outputQuota uint32, timeout *int64) (ntstatus error) = ntdll.NtCreateNamedPipeFile
//sys NtQueryInformationFile(handle Handle, iosb *IO_STATUS_BLOCK, outBuffer *byte, outBufferLen uint32, class uint32) (ntstatus error) = ntdll.NtQueryInformationFile
//sys NtSetInformationFile(handle Handle, iosb *IO_STATUS_BLOCK, inBuffer *byte, inBufferLen uint32, class uint32) (ntstatus error) = ntdll.NtSetInformationFile
//sys RtlDosPathNameToNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToNtPathName_U_WithStatus
//sys RtlDosPathNameToRelativeNtPathName(dosName *uint16, ntName *NTUnicodeString, ntFileNamePart *uint16, relativeName *RTL_RELATIVE_NAME) (ntstatus error) = ntdll.RtlDosPathNameToRelativeNtPathName_U_WithStatus
@@ -460,6 +461,8 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys NtSetInformationProcess(proc Handle, procInfoClass int32, procInfo unsafe.Pointer, procInfoLen uint32) (ntstatus error) = ntdll.NtSetInformationProcess
//sys NtQuerySystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32, retLen *uint32) (ntstatus error) = ntdll.NtQuerySystemInformation
//sys NtSetSystemInformation(sysInfoClass int32, sysInfo unsafe.Pointer, sysInfoLen uint32) (ntstatus error) = ntdll.NtSetSystemInformation
//sys NtQueryEaFile(handle Handle, iosb *IO_STATUS_BLOCK, outBuffer *byte, outBufferLen uint32, returnSingleEntry bool, eaList *byte, eaListLen uint32, eaIndex *uint32, restartScan bool) (ntstatus error) = ntdll.NtQueryEaFile
//sys NtSetEaFile(handle Handle, iosb *IO_STATUS_BLOCK, inBuffer *byte, inBufferLen uint32) (ntstatus error) = ntdll.NtSetEaFile
//sys RtlAddFunctionTable(functionTable *RUNTIME_FUNCTION, entryCount uint32, baseAddress uintptr) (ret bool) = ntdll.RtlAddFunctionTable
//sys RtlDeleteFunctionTable(functionTable *RUNTIME_FUNCTION) (ret bool) = ntdll.RtlDeleteFunctionTable