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windows: add SetFileInformationByHandle

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We already have GetFileInformationByHandle, so this adds the
corresponding SetFileInformationByHandle, which has a nearly identical
function signature to GetFileInformationByHandleEx, which is
convenient.

We also add the enum for the various classes of data.

Reference: https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-setfileinformationbyhandle

Change-Id: I3d3e8b99e616b512df4d57c8c521e14294c93a6d
Reviewed-on: https://go-review.googlesource.com/c/sys/+/270757
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Brad Fitzpatrick <bradfitz@golang.org>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2020-11-17 10:19:46 +01:00
parent cc9327a14d
commit d9b008d0a6
3 changed files with 39 additions and 0 deletions
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1
windows/syscall_windows.go
View File

@@ -188,6 +188,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys FindClose(handle Handle) (err error)
//sys GetFileInformationByHandle(handle Handle, data *ByHandleFileInformation) (err error)
//sys GetFileInformationByHandleEx(handle Handle, class uint32, outBuffer *byte, outBufferLen uint32) (err error)
//sys SetFileInformationByHandle(handle Handle, class uint32, inBuffer *byte, inBufferLen uint32) (err error)
//sys GetCurrentDirectory(buflen uint32, buf *uint16) (n uint32, err error) = GetCurrentDirectoryW
//sys SetCurrentDirectory(path *uint16) (err error) = SetCurrentDirectoryW
//sys CreateDirectory(path *uint16, sa *SecurityAttributes) (err error) = CreateDirectoryW

29
windows/types_windows.go
View File

@@ -1772,3 +1772,32 @@ const (
MUI_LANGUAGE_INSTALLED = 0x20
MUI_LANGUAGE_LICENSED = 0x40
)
// FILE_INFO_BY_HANDLE_CLASS constants for SetFileInformationByHandle/GetFileInformationByHandleEx
const (
FileBasicInfo = 0
FileStandardInfo = 1
FileNameInfo = 2
FileRenameInfo = 3
FileDispositionInfo = 4
FileAllocationInfo = 5
FileEndOfFileInfo = 6
FileStreamInfo = 7
FileCompressionInfo = 8
FileAttributeTagInfo = 9
FileIdBothDirectoryInfo = 10
FileIdBothDirectoryRestartInfo = 11
FileIoPriorityHintInfo = 12
FileRemoteProtocolInfo = 13
FileFullDirectoryInfo = 14
FileFullDirectoryRestartInfo = 15
FileStorageInfo = 16
FileAlignmentInfo = 17
FileIdInfo = 18
FileIdExtdDirectoryInfo = 19
FileIdExtdDirectoryRestartInfo = 20
FileDispositionInfoEx = 21
FileRenameInfoEx = 22
FileCaseSensitiveInfo = 23
FileNormalizedNameInfo = 24
)

9
windows/zsyscall_windows.go
View File

@@ -285,6 +285,7 @@ var (
procSetEvent = modkernel32.NewProc("SetEvent")
procSetFileAttributesW = modkernel32.NewProc("SetFileAttributesW")
procSetFileCompletionNotificationModes = modkernel32.NewProc("SetFileCompletionNotificationModes")
procSetFileInformationByHandle = modkernel32.NewProc("SetFileInformationByHandle")
procSetFilePointer = modkernel32.NewProc("SetFilePointer")
procSetFileTime = modkernel32.NewProc("SetFileTime")
procSetHandleInformation = modkernel32.NewProc("SetHandleInformation")
@@ -2411,6 +2412,14 @@ func SetFileCompletionNotificationModes(handle Handle, flags uint8) (err error)
return
}
func SetFileInformationByHandle(handle Handle, class uint32, inBuffer *byte, inBufferLen uint32) (err error) {
r1, _, e1 := syscall.Syscall6(procSetFileInformationByHandle.Addr(), 4, uintptr(handle), uintptr(class), uintptr(unsafe.Pointer(inBuffer)), uintptr(inBufferLen), 0, 0)
if r1 == 0 {
err = errnoErr(e1)
}
return
}
func SetFilePointer(handle Handle, lowoffset int32, highoffsetptr *int32, whence uint32) (newlowoffset uint32, err error) {
r0, _, e1 := syscall.Syscall6(procSetFilePointer.Addr(), 4, uintptr(handle), uintptr(lowoffset), uintptr(unsafe.Pointer(highoffsetptr)), uintptr(whence), 0, 0)
newlowoffset = uint32(r0)