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windows: add GetProcessId function

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ref:
https://docs.microsoft.com/en-us/windows/desktop/api/processthreadsapi/nf-processthreadsapi-getprocessid

Document does not say anything about return value, but when I use 0 for HANDLE, GetProcessId
returns 0 with ERROR_INVALID_HANDLE from GetLastError().

Change-Id: Ib6782ccd5a4917e93ddbcf18c533921b12c67e3b
Reviewed-on: https://go-review.googlesource.com/c/sys/+/180924
Reviewed-by: Marc-Antoine Ruel <maruel@google.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Takuto Ikuta
2019-06-13 09:49:25 +00:00
committed by Alex Brainman
parent 93c9922d18
commit 914ada52e9
2 changed files with 15 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
windows/syscall_windows.go
+1
View File
@@ -266,6 +266,7 @@ func NewCallbackCDecl(fn interface{}) uintptr {
//sys GetPriorityClass(process Handle) (ret uint32, err error) = kernel32.GetPriorityClass
//sys SetInformationJobObject(job Handle, JobObjectInformationClass uint32, JobObjectInformation uintptr, JobObjectInformationLength uint32) (ret int, err error)
//sys GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err error)
//sys GetProcessId(process Handle) (id uint32, err error)
// Volume Management Functions
//sys DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) = DefineDosDeviceW
windows/zsyscall_windows.go
+14
View File
@@ -205,6 +205,7 @@ var (
procGetPriorityClass = modkernel32.NewProc("GetPriorityClass")
procSetInformationJobObject = modkernel32.NewProc("SetInformationJobObject")
procGenerateConsoleCtrlEvent = modkernel32.NewProc("GenerateConsoleCtrlEvent")
procGetProcessId = modkernel32.NewProc("GetProcessId")
procDefineDosDeviceW = modkernel32.NewProc("DefineDosDeviceW")
procDeleteVolumeMountPointW = modkernel32.NewProc("DeleteVolumeMountPointW")
procFindFirstVolumeW = modkernel32.NewProc("FindFirstVolumeW")
@@ -2209,6 +2210,19 @@ func GenerateConsoleCtrlEvent(ctrlEvent uint32, processGroupID uint32) (err erro
return
}
func GetProcessId(process Handle) (id uint32, err error) {
r0, _, e1 := syscall.Syscall(procGetProcessId.Addr(), 1, uintptr(process), 0, 0)
id = uint32(r0)
if id == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func DefineDosDevice(flags uint32, deviceName *uint16, targetPath *uint16) (err error) {
r1, _, e1 := syscall.Syscall(procDefineDosDeviceW.Addr(), 3, uintptr(flags), uintptr(unsafe.Pointer(deviceName)), uintptr(unsafe.Pointer(targetPath)))
if r1 == 0 {