// license that can be found in the LICENSE file.

//go:build solaris

package lif

import (
	"syscall"
	"unsafe"
)

//go:cgo_import_dynamic libc_ioctl ioctl "libc.so"

//go:linkname procIoctl libc_ioctl

var procIoctl uintptr

func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)

func ioctl(s, ioc uintptr, arg unsafe.Pointer) error {

	MOVW	$0, R0		// no error (it's ignored anyway)
	MOVW	R9, R13
	RET

// syscallX calls a function in libc on behalf of the syscall package.
// syscallX takes a pointer to a struct like:
// struct {
//	fn    uintptr
//	a1    uintptr
//	a2    uintptr
//	a3    uintptr
//	r1    uintptr
//	r2    uintptr
//	err   uintptr
// }
// syscallX must be called on the g0 stack with the
// C calling convention (use libcCall).

// (in addition to standard package syscall).
// Do not remove or change the type signature.
//
// syscall.syscall6 is meant for package syscall (and x/sys),
// but widely used packages access it using linkname.
// Notable members of the hall of shame include:
//   - github.com/tetratelabs/wazero
//
// See go.dev/issue/67401.
//
//go:linkname syscall_syscall6 syscall.syscall6
//go:nosplit

	CMP	$-1, R0
	BNE	3(PC)
	MOVD	$0, R0			// crash on syscall failure
	MOVD	R0, (R0)
	RET

// syscall calls a function in libc on behalf of the syscall package.
// syscall takes a pointer to a struct like:
// struct {
//	fn    uintptr
//	a1    uintptr
//	a2    uintptr
//	a3    uintptr
//	r1    uintptr
//	r2    uintptr
//	err   uintptr
// }
// syscall must be called on the g0 stack with the

	r0, _, e1 := Syscall(procGetCurrentProcess.Addr(), 0, 0, 0, 0)
	pseudoHandle = Handle(r0)
	if pseudoHandle == 0 {
		err = errnoErr(e1)
	}
	return
}

func getCurrentProcessId() (pid uint32) {
	r0, _, _ := Syscall(procGetCurrentProcessId.Addr(), 0, 0, 0, 0)
	pid = uint32(r0)
	return
}

func GetEnvironmentStrings() (envs *uint16, err error) {

// the manuals for the appropriate operating system.
//
// These calls return err == nil to indicate success; otherwise
// err represents an operating system error describing the failure and
// holds a value of type syscall.Errno.
package unix // import "golang.org/x/sys/unix"

import (
	"bytes"
	"strings"
	"unsafe"
)

// ByteSliceFromString returns a NUL-terminated slice of bytes

func RegCloseKey(key Handle) (regerrno error) {
	r0, _, _ := syscall.Syscall(procRegCloseKey.Addr(), 1, uintptr(key), 0, 0)
	if r0 != 0 {
		regerrno = syscall.Errno(r0)
	}
	return
}

func RegEnumKeyEx(key Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, class *uint16, classLen *uint32, lastWriteTime *Filetime) (regerrno error) {

// Provide these function names via assembly so they are provided as ABI0,
// rather than ABIInternal.

// func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
TEXT	·Syscall(SB),NOSPLIT,$0-56
	JMP	·syscallInternal(SB)

// func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
TEXT	·Syscall6(SB),NOSPLIT,$0-80
	JMP	·syscall6Internal(SB)

ok:
	XORL	AX, AX        // no error (it's ignored anyway)
	RET

// syscallX calls a function in libc on behalf of the syscall package.
// syscallX takes a pointer to a struct like:
// struct {
//	fn    uintptr
//	a1    uintptr
//	a2    uintptr
//	a3    uintptr
//	r1    uintptr
//	r2    uintptr
//	err   uintptr
// }
// syscallX must be called on the g0 stack with the
// C calling convention (use libcCall).

//  v5.1: pidfd_send_signal syscall;
//  v5.2: CLONE_PIDFD flag for clone syscall;
//  v5.3: pidfd_open syscall, clone3 syscall;
//  v5.4: P_PIDFD idtype support for waitid syscall;
//  v5.6: pidfd_getfd syscall.

package os

import (
	"errors"
	"internal/syscall/unix"
	"sync"
	"syscall"
	"unsafe"
)

func ensurePidfd(sysAttr *syscall.SysProcAttr) *syscall.SysProcAttr {
	if !pidfdWorks() {