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syscall: restore broken GetQueuedCompletionStatus signature but make it not crash

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This reverts commit dc4698f52b, and then
fixes the memory corruption issue. It also suggests users switch to
x/sys/windows for the proper function.

This requires CL 295174 to be submitted first.

Updates #44538.

Change-Id: I0ee602f1c1d6a89cc585aff426833a4cb3f2be50
Reviewed-on: https://go-review.googlesource.com/c/go/+/296149
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
Trust: Bryan C. Mills <bcmills@google.com>
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Jason A. Donenfeld 2021-02-24 22:59:59 +01:00 committed by Ian Lance Taylor
parent d0d21b7c4c
commit dbbc5ec7e8
3 changed files with 31 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
api/except.txt
View File

@ -471,9 +471,6 @@ pkg syscall (openbsd-amd64-cgo), type Statfs_t struct, Pad_cgo_1 [4]uint8
pkg syscall (openbsd-amd64-cgo), type Timespec struct, Pad_cgo_0 [4]uint8
pkg syscall (openbsd-amd64-cgo), type Timespec struct, Sec int32
pkg syscall (windows-386), const TOKEN_ALL_ACCESS = 983295
pkg syscall (windows-386), func CreateIoCompletionPort(Handle, Handle, uint32, uint32) (Handle, error)
pkg syscall (windows-386), func GetQueuedCompletionStatus(Handle, *uint32, *uint32, **Overlapped, uint32) error
pkg syscall (windows-386), func PostQueuedCompletionStatus(Handle, uint32, uint32, *Overlapped) error
pkg syscall (windows-386), type AddrinfoW struct, Addr uintptr
pkg syscall (windows-386), type CertChainPolicyPara struct, ExtraPolicyPara uintptr
pkg syscall (windows-386), type CertChainPolicyStatus struct, ExtraPolicyStatus uintptr
@ -483,9 +480,6 @@ pkg syscall (windows-386), type CertRevocationInfo struct, OidSpecificInfo uintp
pkg syscall (windows-386), type CertSimpleChain struct, TrustListInfo uintptr
pkg syscall (windows-386), type RawSockaddrAny struct, Pad [96]int8
pkg syscall (windows-amd64), const TOKEN_ALL_ACCESS = 983295
pkg syscall (windows-amd64), func CreateIoCompletionPort(Handle, Handle, uint32, uint32) (Handle, error)
pkg syscall (windows-amd64), func GetQueuedCompletionStatus(Handle, *uint32, *uint32, **Overlapped, uint32) error
pkg syscall (windows-amd64), func PostQueuedCompletionStatus(Handle, uint32, uint32, *Overlapped) error
pkg syscall (windows-amd64), type AddrinfoW struct, Addr uintptr
pkg syscall (windows-amd64), type CertChainPolicyPara struct, ExtraPolicyPara uintptr
pkg syscall (windows-amd64), type CertChainPolicyStatus struct, ExtraPolicyStatus uintptr

31
src/syscall/syscall_windows.go
View File

@ -213,9 +213,9 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys SetEndOfFile(handle Handle) (err error)
//sys GetSystemTimeAsFileTime(time *Filetime)
//sys GetTimeZoneInformation(tzi *Timezoneinformation) (rc uint32, err error) [failretval==0xffffffff]
//sys CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error)
//sys GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error)
//sys PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error)
//sys createIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error) = CreateIoCompletionPort
//sys getQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error) = GetQueuedCompletionStatus
//sys postQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error) = PostQueuedCompletionStatus
//sys CancelIo(s Handle) (err error)
//sys CancelIoEx(s Handle, o *Overlapped) (err error)
//sys CreateProcess(appName *uint16, commandLine *uint16, procSecurity *SecurityAttributes, threadSecurity *SecurityAttributes, inheritHandles bool, creationFlags uint32, env *uint16, currentDir *uint16, startupInfo *StartupInfo, outProcInfo *ProcessInformation) (err error) = CreateProcessW
@ -1212,3 +1212,28 @@ func Readlink(path string, buf []byte) (n int, err error) {
return n, nil
}
// Deprecated: CreateIoCompletionPort has the wrong function signature. Use x/sys/windows.CreateIoCompletionPort.
func CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uint32, threadcnt uint32) (Handle, error) {
return createIoCompletionPort(filehandle, cphandle, uintptr(key), threadcnt)
}
// Deprecated: GetQueuedCompletionStatus has the wrong function signature. Use x/sys/windows.GetQueuedCompletionStatus.
func GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uint32, overlapped **Overlapped, timeout uint32) error {
var ukey uintptr
var pukey *uintptr
if key != nil {
ukey = uintptr(*key)
pukey = &ukey
}
err := getQueuedCompletionStatus(cphandle, qty, pukey, overlapped, timeout)
if key != nil {
*key = uint32(ukey)
}
return err
}
// Deprecated: PostQueuedCompletionStatus has the wrong function signature. Use x/sys/windows.PostQueuedCompletionStatus.
func PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uint32, overlapped *Overlapped) error {
return postQueuedCompletionStatus(cphandle, qty, uintptr(key), overlapped)
}

6
src/syscall/zsyscall_windows.go
View File

@ -515,7 +515,7 @@ func CreateHardLink(filename *uint16, existingfilename *uint16, reserved uintptr
return
}
func CreateIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error) {
func createIoCompletionPort(filehandle Handle, cphandle Handle, key uintptr, threadcnt uint32) (handle Handle, err error) {
r0, _, e1 := Syscall6(procCreateIoCompletionPort.Addr(), 4, uintptr(filehandle), uintptr(cphandle), uintptr(key), uintptr(threadcnt), 0, 0)
handle = Handle(r0)
if handle == 0 {
@ -822,7 +822,7 @@ func GetProcessTimes(handle Handle, creationTime *Filetime, exitTime *Filetime,
return
}
func GetQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error) {
func getQueuedCompletionStatus(cphandle Handle, qty *uint32, key *uintptr, overlapped **Overlapped, timeout uint32) (err error) {
r1, _, e1 := Syscall6(procGetQueuedCompletionStatus.Addr(), 5, uintptr(cphandle), uintptr(unsafe.Pointer(qty)), uintptr(unsafe.Pointer(key)), uintptr(unsafe.Pointer(overlapped)), uintptr(timeout), 0)
if r1 == 0 {
err = errnoErr(e1)
@ -954,7 +954,7 @@ func OpenProcess(da uint32, inheritHandle bool, pid uint32) (handle Handle, err
return
}
func PostQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error) {
func postQueuedCompletionStatus(cphandle Handle, qty uint32, key uintptr, overlapped *Overlapped) (err error) {
r1, _, e1 := Syscall6(procPostQueuedCompletionStatus.Addr(), 4, uintptr(cphandle), uintptr(qty), uintptr(key), uintptr(unsafe.Pointer(overlapped)), 0, 0)
if r1 == 0 {
err = errnoErr(e1)