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//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
22
23// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
24type SockaddrDatalink struct {
25	Len    uint8
26	Family uint8
27	Index  uint16
28	Type   uint8
29	Nlen   uint8
30	Alen   uint8
31	Slen   uint8
32	Data   [12]int8
33	raw    RawSockaddrDatalink
34}
35
36func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
37
38func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
39	var olen uintptr
40
41	// Get a list of all sysctl nodes below the given MIB by performing
42	// a sysctl for the given MIB with CTL_QUERY appended.
43	mib = append(mib, CTL_QUERY)
44	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
45	qp := (*byte)(unsafe.Pointer(&qnode))
46	sz := unsafe.Sizeof(qnode)
47	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
48		return nil, err
49	}
50
51	// Now that we know the size, get the actual nodes.
52	nodes = make([]Sysctlnode, olen/sz)
53	np := (*byte)(unsafe.Pointer(&nodes[0]))
54	if err = sysctl(mib, np, &olen, qp, sz); err != nil {
55		return nil, err
56	}
57
58	return nodes, nil
59}
60
61func nametomib(name string) (mib []_C_int, err error) {
62	// Split name into components.
63	var parts []string
64	last := 0
65	for i := 0; i < len(name); i++ {
66		if name[i] == '.' {
67			parts = append(parts, name[last:i])
68			last = i + 1
69		}
70	}
71	parts = append(parts, name[last:])
72
73	// Discover the nodes and construct the MIB OID.
74	for partno, part := range parts {
75		nodes, err := sysctlNodes(mib)
76		if err != nil {
77			return nil, err
78		}
79		for _, node := range nodes {
80			n := make([]byte, 0)
81			for i := range node.Name {
82				if node.Name[i] != 0 {
83					n = append(n, byte(node.Name[i]))
84				}
85			}
86			if string(n) == part {
87				mib = append(mib, _C_int(node.Num))
88				break
89			}
90		}
91		if len(mib) != partno+1 {
92			return nil, EINVAL
93		}
94	}
95
96	return mib, nil
97}
98
99func direntIno(buf []byte) (uint64, bool) {
100	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
101}
102
103func direntReclen(buf []byte) (uint64, bool) {
104	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
105}
106
107func direntNamlen(buf []byte) (uint64, bool) {
108	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
109}
110
111func SysctlClockinfo(name string) (*Clockinfo, error) {
112	mib, err := sysctlmib(name)
113	if err != nil {
114		return nil, err
115	}
116
117	n := uintptr(SizeofClockinfo)
118	var ci Clockinfo
119	if err := sysctl(mib, (*byte)(unsafe.Pointer(&ci)), &n, nil, 0); err != nil {
120		return nil, err
121	}
122	if n != SizeofClockinfo {
123		return nil, EIO
124	}
125	return &ci, nil
126}
127
128//sysnb pipe() (fd1 int, fd2 int, err error)
129func Pipe(p []int) (err error) {
130	if len(p) != 2 {
131		return EINVAL
132	}
133	p[0], p[1], err = pipe()
134	return
135}
136
137//sys Getdents(fd int, buf []byte) (n int, err error)
138func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
139	n, err = Getdents(fd, buf)
140	if err != nil || basep == nil {
141		return
142	}
143
144	var off int64
145	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
146	if err != nil {
147		*basep = ^uintptr(0)
148		return
149	}
150	*basep = uintptr(off)
151	if unsafe.Sizeof(*basep) == 8 {
152		return
153	}
154	if off>>32 != 0 {
155		// We can't stuff the offset back into a uintptr, so any
156		// future calls would be suspect. Generate an error.
157		// EIO is allowed by getdirentries.
158		err = EIO
159	}
160	return
161}
162
163const ImplementsGetwd = true
164
165//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
166
167func Getwd() (string, error) {
168	var buf [PathMax]byte
169	_, err := Getcwd(buf[0:])
170	if err != nil {
171		return "", err
172	}
173	n := clen(buf[:])
174	if n < 1 {
175		return "", EINVAL
176	}
177	return string(buf[:n]), nil
178}
179
180// TODO
181func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
182	return -1, ENOSYS
183}
184
185func setattrlistTimes(path string, times []Timespec, flags int) error {
186	// used on Darwin for UtimesNano
187	return ENOSYS
188}
189
190//sys	ioctl(fd int, req uint, arg uintptr) (err error)
191
192func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
193	var value Ptmget
194	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
195	runtime.KeepAlive(value)
196	return &value, err
197}
198
199func Uname(uname *Utsname) error {
200	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
201	n := unsafe.Sizeof(uname.Sysname)
202	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
203		return err
204	}
205
206	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
207	n = unsafe.Sizeof(uname.Nodename)
208	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
209		return err
210	}
211
212	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
213	n = unsafe.Sizeof(uname.Release)
214	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
215		return err
216	}
217
218	mib = []_C_int{CTL_KERN, KERN_VERSION}
219	n = unsafe.Sizeof(uname.Version)
220	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
221		return err
222	}
223
224	// The version might have newlines or tabs in it, convert them to
225	// spaces.
226	for i, b := range uname.Version {
227		if b == '\n' || b == '\t' {
228			if i == len(uname.Version)-1 {
229				uname.Version[i] = 0
230			} else {
231				uname.Version[i] = ' '
232			}
233		}
234	}
235
236	mib = []_C_int{CTL_HW, HW_MACHINE}
237	n = unsafe.Sizeof(uname.Machine)
238	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
239		return err
240	}
241
242	return nil
243}
244
245func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
246	if raceenabled {
247		raceReleaseMerge(unsafe.Pointer(&ioSync))
248	}
249	return sendfile(outfd, infd, offset, count)
250}
251
252/*
253 * Exposed directly
254 */
255//sys	Access(path string, mode uint32) (err error)
256//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
257//sys	Chdir(path string) (err error)
258//sys	Chflags(path string, flags int) (err error)
259//sys	Chmod(path string, mode uint32) (err error)
260//sys	Chown(path string, uid int, gid int) (err error)
261//sys	Chroot(path string) (err error)
262//sys	Close(fd int) (err error)
263//sys	Dup(fd int) (nfd int, err error)
264//sys	Dup2(from int, to int) (err error)
265//sys	Exit(code int)
266//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
267//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
268//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
269//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
270//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
271//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
272//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
273//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
274//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
275//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
276//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
277//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
278//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
279//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
280//sys	Fchdir(fd int) (err error)
281//sys	Fchflags(fd int, flags int) (err error)
282//sys	Fchmod(fd int, mode uint32) (err error)
283//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
284//sys	Fchown(fd int, uid int, gid int) (err error)
285//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
286//sys	Flock(fd int, how int) (err error)
287//sys	Fpathconf(fd int, name int) (val int, err error)
288//sys	Fstat(fd int, stat *Stat_t) (err error)
289//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
290//sys	Fsync(fd int) (err error)
291//sys	Ftruncate(fd int, length int64) (err error)
292//sysnb	Getegid() (egid int)
293//sysnb	Geteuid() (uid int)
294//sysnb	Getgid() (gid int)
295//sysnb	Getpgid(pid int) (pgid int, err error)
296//sysnb	Getpgrp() (pgrp int)
297//sysnb	Getpid() (pid int)
298//sysnb	Getppid() (ppid int)
299//sys	Getpriority(which int, who int) (prio int, err error)
300//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
301//sysnb	Getrusage(who int, rusage *Rusage) (err error)
302//sysnb	Getsid(pid int) (sid int, err error)
303//sysnb	Gettimeofday(tv *Timeval) (err error)
304//sysnb	Getuid() (uid int)
305//sys	Issetugid() (tainted bool)
306//sys	Kill(pid int, signum syscall.Signal) (err error)
307//sys	Kqueue() (fd int, err error)
308//sys	Lchown(path string, uid int, gid int) (err error)
309//sys	Link(path string, link string) (err error)
310//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
311//sys	Listen(s int, backlog int) (err error)
312//sys	Lstat(path string, stat *Stat_t) (err error)
313//sys	Mkdir(path string, mode uint32) (err error)
314//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
315//sys	Mkfifo(path string, mode uint32) (err error)
316//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
317//sys	Mknod(path string, mode uint32, dev int) (err error)
318//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
319//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
320//sys	Open(path string, mode int, perm uint32) (fd int, err error)
321//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
322//sys	Pathconf(path string, name int) (val int, err error)
323//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
324//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
325//sys	read(fd int, p []byte) (n int, err error)
326//sys	Readlink(path string, buf []byte) (n int, err error)
327//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
328//sys	Rename(from string, to string) (err error)
329//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
330//sys	Revoke(path string) (err error)
331//sys	Rmdir(path string) (err error)
332//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
333//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
334//sysnb	Setegid(egid int) (err error)
335//sysnb	Seteuid(euid int) (err error)
336//sysnb	Setgid(gid int) (err error)
337//sysnb	Setpgid(pid int, pgid int) (err error)
338//sys	Setpriority(which int, who int, prio int) (err error)
339//sysnb	Setregid(rgid int, egid int) (err error)
340//sysnb	Setreuid(ruid int, euid int) (err error)
341//sysnb	Setrlimit(which int, lim *Rlimit) (err error)
342//sysnb	Setsid() (pid int, err error)
343//sysnb	Settimeofday(tp *Timeval) (err error)
344//sysnb	Setuid(uid int) (err error)
345//sys	Stat(path string, stat *Stat_t) (err error)
346//sys	Symlink(path string, link string) (err error)
347//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
348//sys	Sync() (err error)
349//sys	Truncate(path string, length int64) (err error)
350//sys	Umask(newmask int) (oldmask int)
351//sys	Unlink(path string) (err error)
352//sys	Unlinkat(dirfd int, path string, flags int) (err error)
353//sys	Unmount(path string, flags int) (err error)
354//sys	write(fd int, p []byte) (n int, err error)
355//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
356//sys	munmap(addr uintptr, length uintptr) (err error)
357//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
358//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
359//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
360
361/*
362 * Unimplemented
363 */
364// ____semctl13
365// __clone
366// __fhopen40
367// __fhstat40
368// __fhstatvfs140
369// __fstat30
370// __getcwd
371// __getfh30
372// __getlogin
373// __lstat30
374// __mount50
375// __msgctl13
376// __msync13
377// __ntp_gettime30
378// __posix_chown
379// __posix_fchown
380// __posix_lchown
381// __posix_rename
382// __setlogin
383// __shmctl13
384// __sigaction_sigtramp
385// __sigaltstack14
386// __sigpending14
387// __sigprocmask14
388// __sigsuspend14
389// __sigtimedwait
390// __stat30
391// __syscall
392// __vfork14
393// _ksem_close
394// _ksem_destroy
395// _ksem_getvalue
396// _ksem_init
397// _ksem_open
398// _ksem_post
399// _ksem_trywait
400// _ksem_unlink
401// _ksem_wait
402// _lwp_continue
403// _lwp_create
404// _lwp_ctl
405// _lwp_detach
406// _lwp_exit
407// _lwp_getname
408// _lwp_getprivate
409// _lwp_kill
410// _lwp_park
411// _lwp_self
412// _lwp_setname
413// _lwp_setprivate
414// _lwp_suspend
415// _lwp_unpark
416// _lwp_unpark_all
417// _lwp_wait
418// _lwp_wakeup
419// _pset_bind
420// _sched_getaffinity
421// _sched_getparam
422// _sched_setaffinity
423// _sched_setparam
424// acct
425// aio_cancel
426// aio_error
427// aio_fsync
428// aio_read
429// aio_return
430// aio_suspend
431// aio_write
432// break
433// clock_getres
434// clock_gettime
435// clock_settime
436// compat_09_ogetdomainname
437// compat_09_osetdomainname
438// compat_09_ouname
439// compat_10_omsgsys
440// compat_10_osemsys
441// compat_10_oshmsys
442// compat_12_fstat12
443// compat_12_getdirentries
444// compat_12_lstat12
445// compat_12_msync
446// compat_12_oreboot
447// compat_12_oswapon
448// compat_12_stat12
449// compat_13_sigaction13
450// compat_13_sigaltstack13
451// compat_13_sigpending13
452// compat_13_sigprocmask13
453// compat_13_sigreturn13
454// compat_13_sigsuspend13
455// compat_14___semctl
456// compat_14_msgctl
457// compat_14_shmctl
458// compat_16___sigaction14
459// compat_16___sigreturn14
460// compat_20_fhstatfs
461// compat_20_fstatfs
462// compat_20_getfsstat
463// compat_20_statfs
464// compat_30___fhstat30
465// compat_30___fstat13
466// compat_30___lstat13
467// compat_30___stat13
468// compat_30_fhopen
469// compat_30_fhstat
470// compat_30_fhstatvfs1
471// compat_30_getdents
472// compat_30_getfh
473// compat_30_ntp_gettime
474// compat_30_socket
475// compat_40_mount
476// compat_43_fstat43
477// compat_43_lstat43
478// compat_43_oaccept
479// compat_43_ocreat
480// compat_43_oftruncate
481// compat_43_ogetdirentries
482// compat_43_ogetdtablesize
483// compat_43_ogethostid
484// compat_43_ogethostname
485// compat_43_ogetkerninfo
486// compat_43_ogetpagesize
487// compat_43_ogetpeername
488// compat_43_ogetrlimit
489// compat_43_ogetsockname
490// compat_43_okillpg
491// compat_43_olseek
492// compat_43_ommap
493// compat_43_oquota
494// compat_43_orecv
495// compat_43_orecvfrom
496// compat_43_orecvmsg
497// compat_43_osend
498// compat_43_osendmsg
499// compat_43_osethostid
500// compat_43_osethostname
501// compat_43_osetrlimit
502// compat_43_osigblock
503// compat_43_osigsetmask
504// compat_43_osigstack
505// compat_43_osigvec
506// compat_43_otruncate
507// compat_43_owait
508// compat_43_stat43
509// execve
510// extattr_delete_fd
511// extattr_delete_file
512// extattr_delete_link
513// extattr_get_fd
514// extattr_get_file
515// extattr_get_link
516// extattr_list_fd
517// extattr_list_file
518// extattr_list_link
519// extattr_set_fd
520// extattr_set_file
521// extattr_set_link
522// extattrctl
523// fchroot
524// fdatasync
525// fgetxattr
526// fktrace
527// flistxattr
528// fork
529// fremovexattr
530// fsetxattr
531// fstatvfs1
532// fsync_range
533// getcontext
534// getitimer
535// getvfsstat
536// getxattr
537// ktrace
538// lchflags
539// lchmod
540// lfs_bmapv
541// lfs_markv
542// lfs_segclean
543// lfs_segwait
544// lgetxattr
545// lio_listio
546// listxattr
547// llistxattr
548// lremovexattr
549// lseek
550// lsetxattr
551// lutimes
552// madvise
553// mincore
554// minherit
555// modctl
556// mq_close
557// mq_getattr
558// mq_notify
559// mq_open
560// mq_receive
561// mq_send
562// mq_setattr
563// mq_timedreceive
564// mq_timedsend
565// mq_unlink
566// mremap
567// msgget
568// msgrcv
569// msgsnd
570// nfssvc
571// ntp_adjtime
572// pmc_control
573// pmc_get_info
574// pollts
575// preadv
576// profil
577// pselect
578// pset_assign
579// pset_create
580// pset_destroy
581// ptrace
582// pwritev
583// quotactl
584// rasctl
585// readv
586// reboot
587// removexattr
588// sa_enable
589// sa_preempt
590// sa_register
591// sa_setconcurrency
592// sa_stacks
593// sa_yield
594// sbrk
595// sched_yield
596// semconfig
597// semget
598// semop
599// setcontext
600// setitimer
601// setxattr
602// shmat
603// shmdt
604// shmget
605// sstk
606// statvfs1
607// swapctl
608// sysarch
609// syscall
610// timer_create
611// timer_delete
612// timer_getoverrun
613// timer_gettime
614// timer_settime
615// undelete
616// utrace
617// uuidgen
618// vadvise
619// vfork
620// writev
621