// Copyright 2009,2010 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.

// NetBSD system calls.

// This file is compiled as ordinary Go code,

// but it is also input to mksyscall,

// which parses the //sys lines and generates system call stubs.

// Note that sometimes we use a lowercase //sys name and wrap

// it in our own nicer implementation, either here or in

// syscall_bsd.go or syscall_unix.go.

package unix

import (

	"runtime"

	"syscall"

	"unsafe"

)

// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.

type SockaddrDatalink struct {

	Len    uint8

	Family uint8

	Index  uint16

	Type   uint8

	Nlen   uint8

	Alen   uint8

	Slen   uint8

	Data   [12]int8

	raw    RawSockaddrDatalink

}

func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)

func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {

	var olen uintptr

	// Get a list of all sysctl nodes below the given MIB by performing

	// a sysctl for the given MIB with CTL_QUERY appended.

	mib = append(mib, CTL_QUERY)

	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}

	qp := (*byte)(unsafe.Pointer(&qnode))

	sz := unsafe.Sizeof(qnode)

	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {

		return nil, err

	}

	// Now that we know the size, get the actual nodes.

	nodes = make([]Sysctlnode, olen/sz)

	np := (*byte)(unsafe.Pointer(&nodes[0]))

	if err = sysctl(mib, np, &olen, qp, sz); err != nil {

		return nil, err

	}

	return nodes, nil

}

func nametomib(name string) (mib []_C_int, err error) {

	// Split name into components.

	var parts []string

	last := 0

	for i := 0; i < len(name); i++ {

		if name[i] == '.' {

			parts = append(parts, name[last:i])

			last = i + 1

		}

	}

	parts = append(parts, name[last:])

	// Discover the nodes and construct the MIB OID.

	for partno, part := range parts {

		nodes, err := sysctlNodes(mib)

		if err != nil {

			return nil, err

		}

		for _, node := range nodes {

			n := make([]byte, 0)

			for i := range node.Name {

				if node.Name[i] != 0 {

					n = append(n, byte(node.Name[i]))

				}

			}

			if string(n) == part {

				mib = append(mib, _C_int(node.Num))

				break

			}

		}

		if len(mib) != partno+1 {

			return nil, EINVAL

		}

	}

	return mib, nil

}

func direntIno(buf []byte) (uint64, bool) {

	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))

}

func direntReclen(buf []byte) (uint64, bool) {

	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))

}

func direntNamlen(buf []byte) (uint64, bool) {

	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))

}

//sysnb pipe() (fd1 int, fd2 int, err error)

func Pipe(p []int) (err error) {

	if len(p) != 2 {

		return EINVAL

	}

	p[0], p[1], err = pipe()

	return

}

//sys Getdents(fd int, buf []byte) (n int, err error)

func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {

	n, err = Getdents(fd, buf)

	if err != nil || basep == nil {

		return

	}

	var off int64

	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)

	if err != nil {

		*basep = ^uintptr(0)

		return

	}

	*basep = uintptr(off)

	if unsafe.Sizeof(*basep) == 8 {

		return

	}

	if off>>32 != 0 {

		// We can't stuff the offset back into a uintptr, so any

		// future calls would be suspect. Generate an error.

		// EIO is allowed by getdirentries.

		err = EIO

	}

	return

}

const ImplementsGetwd = true

//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD

func Getwd() (string, error) {

	var buf [PathMax]byte

	_, err := Getcwd(buf[0:])

	if err != nil {

		return "", err

	}

	n := clen(buf[:])

	if n < 1 {

		return "", EINVAL

	}

	return string(buf[:n]), nil

}

// TODO

func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {

	return -1, ENOSYS

}

func setattrlistTimes(path string, times []Timespec, flags int) error {

	// used on Darwin for UtimesNano

	return ENOSYS

}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)

//sys   sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {

	var value Ptmget

	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))

	runtime.KeepAlive(value)

	return &value, err

}

func Uname(uname *Utsname) error {

	mib := []_C_int{CTL_KERN, KERN_OSTYPE}

	n := unsafe.Sizeof(uname.Sysname)

	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {

		return err

	}

	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}

	n = unsafe.Sizeof(uname.Nodename)

	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {

		return err

	}

	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}

	n = unsafe.Sizeof(uname.Release)

	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {

		return err

	}

	mib = []_C_int{CTL_KERN, KERN_VERSION}

	n = unsafe.Sizeof(uname.Version)

	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {

		return err

	}

	// The version might have newlines or tabs in it, convert them to

	// spaces.

	for i, b := range uname.Version {

		if b == '\n' || b == '\t' {

			if i == len(uname.Version)-1 {

				uname.Version[i] = 0

			} else {

				uname.Version[i] = ' '

			}

		}

	}

	mib = []_C_int{CTL_HW, HW_MACHINE}

	n = unsafe.Sizeof(uname.Machine)

	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {

		return err

	}

	return nil

}

func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {

	if raceenabled {

		raceReleaseMerge(unsafe.Pointer(&ioSync))

	}

	return sendfile(outfd, infd, offset, count)

}

func Fstatvfs(fd int, buf *Statvfs_t) (err error) {

	return Fstatvfs1(fd, buf, ST_WAIT)

}

func Statvfs(path string, buf *Statvfs_t) (err error) {

	return Statvfs1(path, buf, ST_WAIT)

}

/*

 * Exposed directly

 */

//sys	Access(path string, mode uint32) (err error)

//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)

//sys	Chdir(path string) (err error)

//sys	Chflags(path string, flags int) (err error)

//sys	Chmod(path string, mode uint32) (err error)

//sys	Chown(path string, uid int, gid int) (err error)

//sys	Chroot(path string) (err error)

//sys	Close(fd int) (err error)

//sys	Dup(fd int) (nfd int, err error)

//sys	Dup2(from int, to int) (err error)

//sys	Dup3(from int, to int, flags int) (err error)

//sys	Exit(code int)

//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)

//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)

//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)

//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)

//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)

//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)

//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE

//sys	Fchdir(fd int) (err error)

//sys	Fchflags(fd int, flags int) (err error)

//sys	Fchmod(fd int, mode uint32) (err error)

//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)

//sys	Fchown(fd int, uid int, gid int) (err error)

//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)

//sys	Flock(fd int, how int) (err error)

//sys	Fpathconf(fd int, name int) (val int, err error)

//sys	Fstat(fd int, stat *Stat_t) (err error)

//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)

//sys	Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1

//sys	Fsync(fd int) (err error)

//sys	Ftruncate(fd int, length int64) (err error)

//sysnb	Getegid() (egid int)

//sysnb	Geteuid() (uid int)

//sysnb	Getgid() (gid int)

//sysnb	Getpgid(pid int) (pgid int, err error)

//sysnb	Getpgrp() (pgrp int)

//sysnb	Getpid() (pid int)

//sysnb	Getppid() (ppid int)

//sys	Getpriority(which int, who int) (prio int, err error)

//sysnb	Getrlimit(which int, lim *Rlimit) (err error)

//sysnb	Getrusage(who int, rusage *Rusage) (err error)

//sysnb	Getsid(pid int) (sid int, err error)

//sysnb	Gettimeofday(tv *Timeval) (err error)

//sysnb	Getuid() (uid int)

//sys	Issetugid() (tainted bool)

//sys	Kill(pid int, signum syscall.Signal) (err error)

//sys	Kqueue() (fd int, err error)

//sys	Lchown(path string, uid int, gid int) (err error)

//sys	Link(path string, link string) (err error)

//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)

//sys	Listen(s int, backlog int) (err error)

//sys	Lstat(path string, stat *Stat_t) (err error)

//sys	Mkdir(path string, mode uint32) (err error)

//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)

//sys	Mkfifo(path string, mode uint32) (err error)

//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)

//sys	Mknod(path string, mode uint32, dev int) (err error)

//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)

//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)

//sys	Open(path string, mode int, perm uint32) (fd int, err error)

//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)

//sys	Pathconf(path string, name int) (val int, err error)

//sys	Pread(fd int, p []byte, offset int64) (n int, err error)

//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)

//sys	read(fd int, p []byte) (n int, err error)

//sys	Readlink(path string, buf []byte) (n int, err error)

//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)

//sys	Rename(from string, to string) (err error)

//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)

//sys	Revoke(path string) (err error)

//sys	Rmdir(path string) (err error)

//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK

//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)

//sysnb	Setegid(egid int) (err error)

//sysnb	Seteuid(euid int) (err error)

//sysnb	Setgid(gid int) (err error)

//sysnb	Setpgid(pid int, pgid int) (err error)

//sys	Setpriority(which int, who int, prio int) (err error)

//sysnb	Setregid(rgid int, egid int) (err error)

//sysnb	Setreuid(ruid int, euid int) (err error)

//sysnb	Setrlimit(which int, lim *Rlimit) (err error)

//sysnb	Setsid() (pid int, err error)

//sysnb	Settimeofday(tp *Timeval) (err error)

//sysnb	Setuid(uid int) (err error)

//sys	Stat(path string, stat *Stat_t) (err error)

//sys	Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1

//sys	Symlink(path string, link string) (err error)

//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)

//sys	Sync() (err error)

//sys	Truncate(path string, length int64) (err error)

//sys	Umask(newmask int) (oldmask int)

//sys	Unlink(path string) (err error)

//sys	Unlinkat(dirfd int, path string, flags int) (err error)

//sys	Unmount(path string, flags int) (err error)

//sys	write(fd int, p []byte) (n int, err error)

//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)

//sys	munmap(addr uintptr, length uintptr) (err error)

//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ

//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE

//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)

/*

 * Unimplemented

 */

// ____semctl13

// __clone

// __fhopen40

// __fhstat40

// __fhstatvfs140

// __fstat30

// __getcwd

// __getfh30

// __getlogin

// __lstat30

// __mount50

// __msgctl13

// __msync13

// __ntp_gettime30

// __posix_chown

// __posix_fchown

// __posix_lchown

// __posix_rename

// __setlogin

// __shmctl13

// __sigaction_sigtramp

// __sigaltstack14

// __sigpending14

// __sigprocmask14

// __sigsuspend14

// __sigtimedwait

// __stat30

// __syscall

// __vfork14

// _ksem_close

// _ksem_destroy

// _ksem_getvalue

// _ksem_init

// _ksem_open

// _ksem_post

// _ksem_trywait

// _ksem_unlink

// _ksem_wait

// _lwp_continue

// _lwp_create

// _lwp_ctl

// _lwp_detach

// _lwp_exit

// _lwp_getname

// _lwp_getprivate

// _lwp_kill

// _lwp_park

// _lwp_self

// _lwp_setname

// _lwp_setprivate

// _lwp_suspend

// _lwp_unpark

// _lwp_unpark_all

// _lwp_wait

// _lwp_wakeup

// _pset_bind

// _sched_getaffinity

// _sched_getparam

// _sched_setaffinity

// _sched_setparam

// acct

// aio_cancel

// aio_error

// aio_fsync

// aio_read

// aio_return

// aio_suspend

// aio_write

// break

// clock_getres

// clock_gettime

// clock_settime

// compat_09_ogetdomainname

// compat_09_osetdomainname

// compat_09_ouname

// compat_10_omsgsys

// compat_10_osemsys

// compat_10_oshmsys

// compat_12_fstat12

// compat_12_getdirentries

// compat_12_lstat12

// compat_12_msync

// compat_12_oreboot

// compat_12_oswapon

// compat_12_stat12

// compat_13_sigaction13

// compat_13_sigaltstack13

// compat_13_sigpending13

// compat_13_sigprocmask13

// compat_13_sigreturn13

// compat_13_sigsuspend13

// compat_14___semctl

// compat_14_msgctl

// compat_14_shmctl

// compat_16___sigaction14

// compat_16___sigreturn14

// compat_20_fhstatfs

// compat_20_fstatfs

// compat_20_getfsstat

// compat_20_statfs

// compat_30___fhstat30

// compat_30___fstat13

// compat_30___lstat13

// compat_30___stat13

// compat_30_fhopen

// compat_30_fhstat

// compat_30_fhstatvfs1

// compat_30_getdents

// compat_30_getfh

// compat_30_ntp_gettime

// compat_30_socket

// compat_40_mount

// compat_43_fstat43

// compat_43_lstat43

// compat_43_oaccept

// compat_43_ocreat

// compat_43_oftruncate

// compat_43_ogetdirentries

// compat_43_ogetdtablesize

// compat_43_ogethostid

// compat_43_ogethostname

// compat_43_ogetkerninfo

// compat_43_ogetpagesize

// compat_43_ogetpeername

// compat_43_ogetrlimit

// compat_43_ogetsockname

// compat_43_okillpg

// compat_43_olseek

// compat_43_ommap

// compat_43_oquota

// compat_43_orecv

// compat_43_orecvfrom

// compat_43_orecvmsg

// compat_43_osend

// compat_43_osendmsg

// compat_43_osethostid

// compat_43_osethostname

// compat_43_osetrlimit

// compat_43_osigblock

// compat_43_osigsetmask

// compat_43_osigstack

// compat_43_osigvec

// compat_43_otruncate

// compat_43_owait

// compat_43_stat43

// execve

// extattr_delete_fd

// extattr_delete_file

// extattr_delete_link

// extattr_get_fd

// extattr_get_file

// extattr_get_link

// extattr_list_fd

// extattr_list_file

// extattr_list_link

// extattr_set_fd

// extattr_set_file

// extattr_set_link

// extattrctl

// fchroot

// fdatasync

// fgetxattr

// fktrace

// flistxattr

// fork

// fremovexattr

// fsetxattr

// fstatvfs1

// fsync_range

// getcontext

// getitimer

// getvfsstat

// getxattr

// ktrace

// lchflags

// lchmod

// lfs_bmapv

// lfs_markv

// lfs_segclean

// lfs_segwait

// lgetxattr

// lio_listio

// listxattr

// llistxattr

// lremovexattr

// lseek

// lsetxattr

// lutimes

// madvise

// mincore

// minherit

// modctl

// mq_close

// mq_getattr

// mq_notify

// mq_open

// mq_receive

// mq_send

// mq_setattr

// mq_timedreceive

// mq_timedsend

// mq_unlink

// mremap

// msgget

// msgrcv

// msgsnd

// nfssvc

// ntp_adjtime

// pmc_control

// pmc_get_info

// pollts

// preadv

// profil

// pselect

// pset_assign

// pset_create

// pset_destroy

// ptrace

// pwritev

// quotactl

// rasctl

// readv

// reboot

// removexattr

// sa_enable

// sa_preempt

// sa_register

// sa_setconcurrency

// sa_stacks

// sa_yield

// sbrk

// sched_yield

// semconfig

// semget

// semop

// setcontext

// setitimer

// setxattr

// shmat

// shmdt

// shmget

// sstk

// statvfs1

// swapctl

// sysarch

// syscall

// timer_create

// timer_delete

// timer_getoverrun

// timer_gettime

// timer_settime

// undelete

// utrace

// uuidgen

// vadvise

// vfork

// writev