windows: add Service.ListDependentServices
This method allows a user to list all Windows services which are
dependent upon a given service.
This commit makes use of the EnumDependentServices Windows API call.
Without this, a user would have to iterate through each service on the
system, and check if the given service is listed in each service's
dependencies list.
The implementation of ListDependentServices is mostly the same as
Mgr.ListServices, as the API calls behave in the same way.
Fixes golang/go#56766
Change-Id: I9ec18c97afd02f48deef691ccdd5c26d6501add1
Reviewed-on: https://go-review.googlesource.com/c/sys/+/451363
Reviewed-by: Than McIntosh <thanm@google.com>
Run-TryBot: Alex Brainman <alex.brainman@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Benny Siegert <bsiegert@gmail.com>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
diff --git a/windows/zsyscall_windows.go b/windows/zsyscall_windows.go
index 6d2a268..a81ea2c 100644
--- a/windows/zsyscall_windows.go
+++ b/windows/zsyscall_windows.go
@@ -86,6 +86,7 @@
procDeleteService = modadvapi32.NewProc("DeleteService")
procDeregisterEventSource = modadvapi32.NewProc("DeregisterEventSource")
procDuplicateTokenEx = modadvapi32.NewProc("DuplicateTokenEx")
+ procEnumDependentServicesW = modadvapi32.NewProc("EnumDependentServicesW")
procEnumServicesStatusExW = modadvapi32.NewProc("EnumServicesStatusExW")
procEqualSid = modadvapi32.NewProc("EqualSid")
procFreeSid = modadvapi32.NewProc("FreeSid")
@@ -734,6 +735,14 @@
return
}
+func EnumDependentServices(service Handle, activityState uint32, services *ENUM_SERVICE_STATUS, buffSize uint32, bytesNeeded *uint32, servicesReturned *uint32) (err error) {
+ r1, _, e1 := syscall.Syscall6(procEnumDependentServicesW.Addr(), 6, uintptr(service), uintptr(activityState), uintptr(unsafe.Pointer(services)), uintptr(buffSize), uintptr(unsafe.Pointer(bytesNeeded)), uintptr(unsafe.Pointer(servicesReturned)))
+ if r1 == 0 {
+ err = errnoErr(e1)
+ }
+ return
+}
+
func EnumServicesStatusEx(mgr Handle, infoLevel uint32, serviceType uint32, serviceState uint32, services *byte, bufSize uint32, bytesNeeded *uint32, servicesReturned *uint32, resumeHandle *uint32, groupName *uint16) (err error) {
r1, _, e1 := syscall.Syscall12(procEnumServicesStatusExW.Addr(), 10, uintptr(mgr), uintptr(infoLevel), uintptr(serviceType), uintptr(serviceState), uintptr(unsafe.Pointer(services)), uintptr(bufSize), uintptr(unsafe.Pointer(bytesNeeded)), uintptr(unsafe.Pointer(servicesReturned)), uintptr(unsafe.Pointer(resumeHandle)), uintptr(unsafe.Pointer(groupName)), 0, 0)
if r1 == 0 {
