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Added HV Socket known IDs, Dial, bug fixes (#239)

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* Added HV Socket known IDs, Dial, bug fixes

Added:
* Well-know Hyper-V VMIDs for parents, children, and loopback.
* VSock interop service GUID.
* `Dial()` and `DialContext()` to dial a specific Hyper-V socket at a
  known address (along with a corresponding `HvsockDialer` struct.

Bug fixes:
* Dial (and Listen) now properly initialize and set properties of their
  sockets after ConnectEx (and AcceptEx).
* The `socketError` used by `bind` was incorrect, it should be `int32(-1)`,
  not `uintptr(^0)`
* Return errors for `(*HvsockConn) SetDeadline`

Created a `sockets` package, currently only with syscalls to `Bind`,
`ConnectEx` and `GetSockName`, bypassing `syscall/windows` restrictions
on the types that can do so.

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

* PR: error handling bug, rebase, unexport, naming

* comments and todos statements
* spelling
* removed dead code
* changed names to be more conventional
* unexported socket code
* made `(*HvsockDialer) Dial` take `Context`, removed `DialContext`
* added default `Dial` function
* rebased onto main
* cleaned up `Dial(` retry loop

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>

* PR: RawSockaddr validation, `.As(` style

Signed-off-by: Hamza El-Saawy <hamzaelsaawy@microsoft.com>
This commit is contained in:
Hamza El-Saawy
2022-07-21 19:33:50 -04:00
committed by GitHub
parent c62166d832
commit d68e55cd0b
6 changed files with 534 additions and 40 deletions
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zsyscall_windows.go
-9
View File
@@ -78,7 +78,6 @@ var (
procRtlDosPathNameToNtPathName_U = modntdll.NewProc("RtlDosPathNameToNtPathName_U")
procRtlNtStatusToDosErrorNoTeb = modntdll.NewProc("RtlNtStatusToDosErrorNoTeb")
procWSAGetOverlappedResult = modws2_32.NewProc("WSAGetOverlappedResult")
procbind = modws2_32.NewProc("bind")
)
func adjustTokenPrivileges(token windows.Token, releaseAll bool, input *byte, outputSize uint32, output *byte, requiredSize *uint32) (success bool, err error) {
@@ -437,11 +436,3 @@ func wsaGetOverlappedResult(h syscall.Handle, o *syscall.Overlapped, bytes *uint
}
return
}
func bind(s syscall.Handle, name unsafe.Pointer, namelen int32) (err error) {
r1, _, e1 := syscall.Syscall(procbind.Addr(), 3, uintptr(s), uintptr(name), uintptr(namelen))
if r1 == socketError {
err = errnoErr(e1)
}
return
}