// but that is a detail of the specific lookup mechanism.
		// Other lookups might allow broader name syntax
		// (for example Multicast DNS allows UTF-8; see RFC 6762).
		// For consistency with libc resolvers, report no such host.
		return dnsmessage.Parser{}, "", newDNSError(errNoSuchHost, name, "")
	}

	if conf == nil {
		conf = getSystemDNSConfig()
	}

	var (
		p      dnsmessage.Parser

			fn = abi.FuncPCABI0(cgoSigtramp)
		} else {
			fn = abi.FuncPCABI0(sigtramp)
		}
	}
	*(*uintptr)(unsafe.Pointer(&sa.__sigaction_u)) = fn
	sigaction(i, &sa, nil)
}

// sigtramp is the callback from libc when a signal is received.
// It is called with the C calling convention.
func sigtramp()
func cgoSigtramp()

//go:nosplit
//go:nowritebarrierrec
func setsigstack(i uint32) {
	var osa usigactiont

// From FreeBSD's <sys/sysctl.h>
const (
	_CTL_HW      = 6
	_HW_PAGESIZE = 7
)

var sigset_all = sigset{[4]uint32{^uint32(0), ^uint32(0), ^uint32(0), ^uint32(0)}}

// Undocumented numbers from FreeBSD's lib/libc/gen/sysctlnametomib.c.
const (
	_CTL_QUERY     = 0
	_CTL_QUERY_MIB = 3
)

// sysctlnametomib fill mib with dynamically assigned sysctl entries of name,
// return count of effected mib slots, return 0 on error.

	return uint32(__minor(NEWDEV, dev))
}

/*
 * Expose the ioctl function
 */

//sys	ioctlRet(fd int, req int, arg uintptr) (ret int, err error) = libc.ioctl
//sys	ioctlPtrRet(fd int, req int, arg unsafe.Pointer) (ret int, err error) = libc.ioctl

func ioctl(fd int, req int, arg uintptr) (err error) {
	_, err = ioctlRet(fd, req, arg)
	return err
}

// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// This file is called cgo_unix.go, but to allow syscalls-to-libc-based
// implementations to share the code, it does not use cgo directly.
// Instead of C.foo it uses _C_foo, which is defined in either
// cgo_unix_cgo.go or cgo_unix_syscall.go

//go:build !netgo && ((cgo && unix) || darwin)

		}
	}
}

func TestTimePprof(t *testing.T) {
	// This test is unreliable on any system in which nanotime
	// calls into libc.
	switch runtime.GOOS {
	case "aix", "darwin", "illumos", "openbsd", "solaris":
		t.Skipf("skipping on %s because nanotime calls libc", runtime.GOOS)
	}

	// Pass GOTRACEBACK for issue #41120 to try to get more
	// information on timeout.

// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build arm && openbsd

package unix

// Deprecated: Use libc wrappers instead of direct syscalls.
const (
	SYS_EXIT           = 1   // { void sys_exit(int rval); }
	SYS_FORK           = 2   // { int sys_fork(void); }

// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build mips64 && openbsd

package unix

// Deprecated: Use libc wrappers instead of direct syscalls.
const (
	SYS_EXIT           = 1   // { void sys_exit(int rval); }
	SYS_FORK           = 2   // { int sys_fork(void); }

// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build arm64 && openbsd

package unix

// Deprecated: Use libc wrappers instead of direct syscalls.
const (
	SYS_EXIT           = 1   // { void sys_exit(int rval); }
	SYS_FORK           = 2   // { int sys_fork(void); }

// Code generated by the command above; see README.md. DO NOT EDIT.

//go:build riscv64 && openbsd

package unix

// Deprecated: Use libc wrappers instead of direct syscalls.
const (
	SYS_EXIT           = 1   // { void sys_exit(int rval); }
	SYS_FORK           = 2   // { int sys_fork(void); }