prepare for CZ wrappers

Signed-off-by: Elijah Wright <git@elijahs.space>

Author: elijah-wright

vminitd/Sources/vminitd/TerminalIO.swift

@@ -19,14 +19,6 @@ import Foundation
 import Logging
 import SendableProperty
 
-#if canImport(Musl)
-import Musl
-private let _syscall = Musl.syscall
-#elseif canImport(Darwin)
-import Darwin
-private let _syscall = Darwin.syscall
-#endif
-
 final class TerminalIO: ManagedProcess.IO & Sendable {
     @SendableProperty
     private var parent: Terminal? = nil
@@ -61,12 +53,12 @@ final class TerminalIO: ManagedProcess.IO & Sendable {
 
     func attach(pid: Int32, fd: Int32) throws {
         #if os(Linux)
-        let containerFd = _syscall(Int(SYS_pidfd_open), pid, 0)
+        let containerFd = CZ_pidfd_open(pid, 0)
         guard containerFd != -1 else {
             throw POSIXError.fromErrno()
         }
 
-        let hostFd = _syscall(Int(CZ_pidfd_getfd), containerFd, fd, 0)
+        let hostFd = CZ_pidfd_getfd(containerFd, fd, 0)
         guard Foundation.close(Int32(containerFd)) == 0 else {
             self.log?.error("failed to close pidfd: \(POSIXError.fromErrno())")
         }