1// Copyright 2009,2010 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5// NetBSD system calls.
6// This file is compiled as ordinary Go code,
7// but it is also input to mksyscall,
8// which parses the //sys lines and generates system call stubs.
9// Note that sometimes we use a lowercase //sys name and wrap
10// it in our own nicer implementation, either here or in
11// syscall_bsd.go or syscall_unix.go.
12
13package unix
14
15import (
16	"runtime"
17	"syscall"
18	"unsafe"
19)
20
21// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
22type SockaddrDatalink struct {
23	Len    uint8
24	Family uint8
25	Index  uint16
26	Type   uint8
27	Nlen   uint8
28	Alen   uint8
29	Slen   uint8
30	Data   [12]int8
31	raw    RawSockaddrDatalink
32}
33
34func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
35
36func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
37	var olen uintptr
38
39	// Get a list of all sysctl nodes below the given MIB by performing
40	// a sysctl for the given MIB with CTL_QUERY appended.
41	mib = append(mib, CTL_QUERY)
42	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
43	qp := (*byte)(unsafe.Pointer(&qnode))
44	sz := unsafe.Sizeof(qnode)
45	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
46		return nil, err
47	}
48
49	// Now that we know the size, get the actual nodes.
50	nodes = make([]Sysctlnode, olen/sz)
51	np := (*byte)(unsafe.Pointer(&nodes[0]))
52	if err = sysctl(mib, np, &olen, qp, sz); err != nil {
53		return nil, err
54	}
55
56	return nodes, nil
57}
58
59func nametomib(name string) (mib []_C_int, err error) {
60	// Split name into components.
61	var parts []string
62	last := 0
63	for i := 0; i < len(name); i++ {
64		if name[i] == '.' {
65			parts = append(parts, name[last:i])
66			last = i + 1
67		}
68	}
69	parts = append(parts, name[last:])
70
71	// Discover the nodes and construct the MIB OID.
72	for partno, part := range parts {
73		nodes, err := sysctlNodes(mib)
74		if err != nil {
75			return nil, err
76		}
77		for _, node := range nodes {
78			n := make([]byte, 0)
79			for i := range node.Name {
80				if node.Name[i] != 0 {
81					n = append(n, byte(node.Name[i]))
82				}
83			}
84			if string(n) == part {
85				mib = append(mib, _C_int(node.Num))
86				break
87			}
88		}
89		if len(mib) != partno+1 {
90			return nil, EINVAL
91		}
92	}
93
94	return mib, nil
95}
96
97func SysctlClockinfo(name string) (*Clockinfo, error) {
98	mib, err := sysctlmib(name)
99	if err != nil {
100		return nil, err
101	}
102
103	n := uintptr(SizeofClockinfo)
104	var ci Clockinfo
105	if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil {
106		return nil, err
107	}
108	if n != SizeofClockinfo {
109		return nil, EIO
110	}
111	return &ci, nil
112}
113
114//sysnb pipe() (fd1 int, fd2 int, err error)
115func Pipe(p []int) (err error) {
116	if len(p) != 2 {
117		return EINVAL
118	}
119	p[0], p[1], err = pipe()
120	return
121}
122
123//sys getdents(fd int, buf []byte) (n int, err error)
124func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
125	return getdents(fd, buf)
126}
127
128const ImplementsGetwd = true
129
130//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
131
132func Getwd() (string, error) {
133	var buf [PathMax]byte
134	_, err := Getcwd(buf[0:])
135	if err != nil {
136		return "", err
137	}
138	n := clen(buf[:])
139	if n < 1 {
140		return "", EINVAL
141	}
142	return string(buf[:n]), nil
143}
144
145// TODO
146func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
147	return -1, ENOSYS
148}
149
150func setattrlistTimes(path string, times []Timespec, flags int) error {
151	// used on Darwin for UtimesNano
152	return ENOSYS
153}
154
155//sys	ioctl(fd int, req uint, arg uintptr) (err error)
156
157// ioctl itself should not be exposed directly, but additional get/set
158// functions for specific types are permissible.
159
160// IoctlSetInt performs an ioctl operation which sets an integer value
161// on fd, using the specified request number.
162func IoctlSetInt(fd int, req uint, value int) error {
163	return ioctl(fd, req, uintptr(value))
164}
165
166func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
167	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
168}
169
170func ioctlSetTermios(fd int, req uint, value *Termios) error {
171	return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
172}
173
174// IoctlGetInt performs an ioctl operation which gets an integer value
175// from fd, using the specified request number.
176func IoctlGetInt(fd int, req uint) (int, error) {
177	var value int
178	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
179	return value, err
180}
181
182func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
183	var value Winsize
184	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
185	return &value, err
186}
187
188func IoctlGetTermios(fd int, req uint) (*Termios, error) {
189	var value Termios
190	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
191	return &value, err
192}
193
194func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
195	var value Ptmget
196	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
197	runtime.KeepAlive(value)
198	return &value, err
199}
200
201func Uname(uname *Utsname) error {
202	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
203	n := unsafe.Sizeof(uname.Sysname)
204	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
205		return err
206	}
207
208	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
209	n = unsafe.Sizeof(uname.Nodename)
210	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
211		return err
212	}
213
214	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
215	n = unsafe.Sizeof(uname.Release)
216	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
217		return err
218	}
219
220	mib = []_C_int{CTL_KERN, KERN_VERSION}
221	n = unsafe.Sizeof(uname.Version)
222	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
223		return err
224	}
225
226	// The version might have newlines or tabs in it, convert them to
227	// spaces.
228	for i, b := range uname.Version {
229		if b == '\n' || b == '\t' {
230			if i == len(uname.Version)-1 {
231				uname.Version[i] = 0
232			} else {
233				uname.Version[i] = ' '
234			}
235		}
236	}
237
238	mib = []_C_int{CTL_HW, HW_MACHINE}
239	n = unsafe.Sizeof(uname.Machine)
240	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
241		return err
242	}
243
244	return nil
245}
246
247/*
248 * Exposed directly
249 */
250//sys	Access(path string, mode uint32) (err error)
251//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
252//sys	Chdir(path string) (err error)
253//sys	Chflags(path string, flags int) (err error)
254//sys	Chmod(path string, mode uint32) (err error)
255//sys	Chown(path string, uid int, gid int) (err error)
256//sys	Chroot(path string) (err error)
257//sys	Close(fd int) (err error)
258//sys	Dup(fd int) (nfd int, err error)
259//sys	Dup2(from int, to int) (err error)
260//sys	Exit(code int)
261//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
262//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
263//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
264//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
265//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
266//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
267//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
268//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
269//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
270//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
271//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
272//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
273//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
274//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
275//sys	Fchdir(fd int) (err error)
276//sys	Fchflags(fd int, flags int) (err error)
277//sys	Fchmod(fd int, mode uint32) (err error)
278//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
279//sys	Fchown(fd int, uid int, gid int) (err error)
280//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
281//sys	Flock(fd int, how int) (err error)
282//sys	Fpathconf(fd int, name int) (val int, err error)
283//sys	Fstat(fd int, stat *Stat_t) (err error)
284//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
285//sys	Fsync(fd int) (err error)
286//sys	Ftruncate(fd int, length int64) (err error)
287//sysnb	Getegid() (egid int)
288//sysnb	Geteuid() (uid int)
289//sysnb	Getgid() (gid int)
290//sysnb	Getpgid(pid int) (pgid int, err error)
291//sysnb	Getpgrp() (pgrp int)
292//sysnb	Getpid() (pid int)
293//sysnb	Getppid() (ppid int)
294//sys	Getpriority(which int, who int) (prio int, err error)
295//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
296//sysnb	Getrusage(who int, rusage *Rusage) (err error)
297//sysnb	Getsid(pid int) (sid int, err error)
298//sysnb	Gettimeofday(tv *Timeval) (err error)
299//sysnb	Getuid() (uid int)
300//sys	Issetugid() (tainted bool)
301//sys	Kill(pid int, signum syscall.Signal) (err error)
302//sys	Kqueue() (fd int, err error)
303//sys	Lchown(path string, uid int, gid int) (err error)
304//sys	Link(path string, link string) (err error)
305//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
306//sys	Listen(s int, backlog int) (err error)
307//sys	Lstat(path string, stat *Stat_t) (err error)
308//sys	Mkdir(path string, mode uint32) (err error)
309//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
310//sys	Mkfifo(path string, mode uint32) (err error)
311//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
312//sys	Mknod(path string, mode uint32, dev int) (err error)
313//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
314//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
315//sys	Open(path string, mode int, perm uint32) (fd int, err error)
316//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
317//sys	Pathconf(path string, name int) (val int, err error)
318//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
319//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
320//sys	read(fd int, p []byte) (n int, err error)
321//sys	Readlink(path string, buf []byte) (n int, err error)
322//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
323//sys	Rename(from string, to string) (err error)
324//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
325//sys	Revoke(path string) (err error)
326//sys	Rmdir(path string) (err error)
327//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
328//sys	Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
329//sysnb	Setegid(egid int) (err error)
330//sysnb	Seteuid(euid int) (err error)
331//sysnb	Setgid(gid int) (err error)
332//sysnb	Setpgid(pid int, pgid int) (err error)
333//sys	Setpriority(which int, who int, prio int) (err error)
334//sysnb	Setregid(rgid int, egid int) (err error)
335//sysnb	Setreuid(ruid int, euid int) (err error)
336//sysnb	Setrlimit(which int, lim *Rlimit) (err error)
337//sysnb	Setsid() (pid int, err error)
338//sysnb	Settimeofday(tp *Timeval) (err error)
339//sysnb	Setuid(uid int) (err error)
340//sys	Stat(path string, stat *Stat_t) (err error)
341//sys	Symlink(path string, link string) (err error)
342//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
343//sys	Sync() (err error)
344//sys	Truncate(path string, length int64) (err error)
345//sys	Umask(newmask int) (oldmask int)
346//sys	Unlink(path string) (err error)
347//sys	Unlinkat(dirfd int, path string, flags int) (err error)
348//sys	Unmount(path string, flags int) (err error)
349//sys	write(fd int, p []byte) (n int, err error)
350//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
351//sys	munmap(addr uintptr, length uintptr) (err error)
352//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
353//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
354//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
355
356/*
357 * Unimplemented
358 */
359// ____semctl13
360// __clone
361// __fhopen40
362// __fhstat40
363// __fhstatvfs140
364// __fstat30
365// __getcwd
366// __getfh30
367// __getlogin
368// __lstat30
369// __mount50
370// __msgctl13
371// __msync13
372// __ntp_gettime30
373// __posix_chown
374// __posix_fchown
375// __posix_lchown
376// __posix_rename
377// __setlogin
378// __shmctl13
379// __sigaction_sigtramp
380// __sigaltstack14
381// __sigpending14
382// __sigprocmask14
383// __sigsuspend14
384// __sigtimedwait
385// __stat30
386// __syscall
387// __vfork14
388// _ksem_close
389// _ksem_destroy
390// _ksem_getvalue
391// _ksem_init
392// _ksem_open
393// _ksem_post
394// _ksem_trywait
395// _ksem_unlink
396// _ksem_wait
397// _lwp_continue
398// _lwp_create
399// _lwp_ctl
400// _lwp_detach
401// _lwp_exit
402// _lwp_getname
403// _lwp_getprivate
404// _lwp_kill
405// _lwp_park
406// _lwp_self
407// _lwp_setname
408// _lwp_setprivate
409// _lwp_suspend
410// _lwp_unpark
411// _lwp_unpark_all
412// _lwp_wait
413// _lwp_wakeup
414// _pset_bind
415// _sched_getaffinity
416// _sched_getparam
417// _sched_setaffinity
418// _sched_setparam
419// acct
420// aio_cancel
421// aio_error
422// aio_fsync
423// aio_read
424// aio_return
425// aio_suspend
426// aio_write
427// break
428// clock_getres
429// clock_gettime
430// clock_settime
431// compat_09_ogetdomainname
432// compat_09_osetdomainname
433// compat_09_ouname
434// compat_10_omsgsys
435// compat_10_osemsys
436// compat_10_oshmsys
437// compat_12_fstat12
438// compat_12_getdirentries
439// compat_12_lstat12
440// compat_12_msync
441// compat_12_oreboot
442// compat_12_oswapon
443// compat_12_stat12
444// compat_13_sigaction13
445// compat_13_sigaltstack13
446// compat_13_sigpending13
447// compat_13_sigprocmask13
448// compat_13_sigreturn13
449// compat_13_sigsuspend13
450// compat_14___semctl
451// compat_14_msgctl
452// compat_14_shmctl
453// compat_16___sigaction14
454// compat_16___sigreturn14
455// compat_20_fhstatfs
456// compat_20_fstatfs
457// compat_20_getfsstat
458// compat_20_statfs
459// compat_30___fhstat30
460// compat_30___fstat13
461// compat_30___lstat13
462// compat_30___stat13
463// compat_30_fhopen
464// compat_30_fhstat
465// compat_30_fhstatvfs1
466// compat_30_getdents
467// compat_30_getfh
468// compat_30_ntp_gettime
469// compat_30_socket
470// compat_40_mount
471// compat_43_fstat43
472// compat_43_lstat43
473// compat_43_oaccept
474// compat_43_ocreat
475// compat_43_oftruncate
476// compat_43_ogetdirentries
477// compat_43_ogetdtablesize
478// compat_43_ogethostid
479// compat_43_ogethostname
480// compat_43_ogetkerninfo
481// compat_43_ogetpagesize
482// compat_43_ogetpeername
483// compat_43_ogetrlimit
484// compat_43_ogetsockname
485// compat_43_okillpg
486// compat_43_olseek
487// compat_43_ommap
488// compat_43_oquota
489// compat_43_orecv
490// compat_43_orecvfrom
491// compat_43_orecvmsg
492// compat_43_osend
493// compat_43_osendmsg
494// compat_43_osethostid
495// compat_43_osethostname
496// compat_43_osetrlimit
497// compat_43_osigblock
498// compat_43_osigsetmask
499// compat_43_osigstack
500// compat_43_osigvec
501// compat_43_otruncate
502// compat_43_owait
503// compat_43_stat43
504// execve
505// extattr_delete_fd
506// extattr_delete_file
507// extattr_delete_link
508// extattr_get_fd
509// extattr_get_file
510// extattr_get_link
511// extattr_list_fd
512// extattr_list_file
513// extattr_list_link
514// extattr_set_fd
515// extattr_set_file
516// extattr_set_link
517// extattrctl
518// fchroot
519// fdatasync
520// fgetxattr
521// fktrace
522// flistxattr
523// fork
524// fremovexattr
525// fsetxattr
526// fstatvfs1
527// fsync_range
528// getcontext
529// getitimer
530// getvfsstat
531// getxattr
532// ktrace
533// lchflags
534// lchmod
535// lfs_bmapv
536// lfs_markv
537// lfs_segclean
538// lfs_segwait
539// lgetxattr
540// lio_listio
541// listxattr
542// llistxattr
543// lremovexattr
544// lseek
545// lsetxattr
546// lutimes
547// madvise
548// mincore
549// minherit
550// modctl
551// mq_close
552// mq_getattr
553// mq_notify
554// mq_open
555// mq_receive
556// mq_send
557// mq_setattr
558// mq_timedreceive
559// mq_timedsend
560// mq_unlink
561// mremap
562// msgget
563// msgrcv
564// msgsnd
565// nfssvc
566// ntp_adjtime
567// pmc_control
568// pmc_get_info
569// pollts
570// preadv
571// profil
572// pselect
573// pset_assign
574// pset_create
575// pset_destroy
576// ptrace
577// pwritev
578// quotactl
579// rasctl
580// readv
581// reboot
582// removexattr
583// sa_enable
584// sa_preempt
585// sa_register
586// sa_setconcurrency
587// sa_stacks
588// sa_yield
589// sbrk
590// sched_yield
591// semconfig
592// semget
593// semop
594// setcontext
595// setitimer
596// setxattr
597// shmat
598// shmdt
599// shmget
600// sstk
601// statvfs1
602// swapctl
603// sysarch
604// syscall
605// timer_create
606// timer_delete
607// timer_getoverrun
608// timer_gettime
609// timer_settime
610// undelete
611// utrace
612// uuidgen
613// vadvise
614// vfork
615// writev
616