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 anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
35	return nil, EAFNOSUPPORT
36}
37
38func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
39
40func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
41	var olen uintptr
42
43	// Get a list of all sysctl nodes below the given MIB by performing
44	// a sysctl for the given MIB with CTL_QUERY appended.
45	mib = append(mib, CTL_QUERY)
46	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
47	qp := (*byte)(unsafe.Pointer(&qnode))
48	sz := unsafe.Sizeof(qnode)
49	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
50		return nil, err
51	}
52
53	// Now that we know the size, get the actual nodes.
54	nodes = make([]Sysctlnode, olen/sz)
55	np := (*byte)(unsafe.Pointer(&nodes[0]))
56	if err = sysctl(mib, np, &olen, qp, sz); err != nil {
57		return nil, err
58	}
59
60	return nodes, nil
61}
62
63func nametomib(name string) (mib []_C_int, err error) {
64	// Split name into components.
65	var parts []string
66	last := 0
67	for i := 0; i < len(name); i++ {
68		if name[i] == '.' {
69			parts = append(parts, name[last:i])
70			last = i + 1
71		}
72	}
73	parts = append(parts, name[last:])
74
75	// Discover the nodes and construct the MIB OID.
76	for partno, part := range parts {
77		nodes, err := sysctlNodes(mib)
78		if err != nil {
79			return nil, err
80		}
81		for _, node := range nodes {
82			n := make([]byte, 0)
83			for i := range node.Name {
84				if node.Name[i] != 0 {
85					n = append(n, byte(node.Name[i]))
86				}
87			}
88			if string(n) == part {
89				mib = append(mib, _C_int(node.Num))
90				break
91			}
92		}
93		if len(mib) != partno+1 {
94			return nil, EINVAL
95		}
96	}
97
98	return mib, nil
99}
100
101func direntIno(buf []byte) (uint64, bool) {
102	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
103}
104
105func direntReclen(buf []byte) (uint64, bool) {
106	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
107}
108
109func direntNamlen(buf []byte) (uint64, bool) {
110	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
111}
112
113//sysnb	pipe() (fd1 int, fd2 int, err error)
114
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//sysnb	pipe2(p *[2]_C_int, flags int) (err error)
124
125func Pipe2(p []int, flags int) error {
126	if len(p) != 2 {
127		return EINVAL
128	}
129	var pp [2]_C_int
130	err := pipe2(&pp, flags)
131	p[0] = int(pp[0])
132	p[1] = int(pp[1])
133	return err
134}
135
136//sys	Getdents(fd int, buf []byte) (n int, err error)
137
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
163//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
164
165// TODO
166func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
167	return -1, ENOSYS
168}
169
170func setattrlistTimes(path string, times []Timespec, flags int) error {
171	// used on Darwin for UtimesNano
172	return ENOSYS
173}
174
175//sys	ioctl(fd int, req uint, arg uintptr) (err error)
176
177//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
178
179func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
180	var value Ptmget
181	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
182	runtime.KeepAlive(value)
183	return &value, err
184}
185
186func Uname(uname *Utsname) error {
187	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
188	n := unsafe.Sizeof(uname.Sysname)
189	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
190		return err
191	}
192
193	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
194	n = unsafe.Sizeof(uname.Nodename)
195	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
196		return err
197	}
198
199	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
200	n = unsafe.Sizeof(uname.Release)
201	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
202		return err
203	}
204
205	mib = []_C_int{CTL_KERN, KERN_VERSION}
206	n = unsafe.Sizeof(uname.Version)
207	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
208		return err
209	}
210
211	// The version might have newlines or tabs in it, convert them to
212	// spaces.
213	for i, b := range uname.Version {
214		if b == '\n' || b == '\t' {
215			if i == len(uname.Version)-1 {
216				uname.Version[i] = 0
217			} else {
218				uname.Version[i] = ' '
219			}
220		}
221	}
222
223	mib = []_C_int{CTL_HW, HW_MACHINE}
224	n = unsafe.Sizeof(uname.Machine)
225	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
226		return err
227	}
228
229	return nil
230}
231
232func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
233	if raceenabled {
234		raceReleaseMerge(unsafe.Pointer(&ioSync))
235	}
236	return sendfile(outfd, infd, offset, count)
237}
238
239func Fstatvfs(fd int, buf *Statvfs_t) (err error) {
240	return Fstatvfs1(fd, buf, ST_WAIT)
241}
242
243func Statvfs(path string, buf *Statvfs_t) (err error) {
244	return Statvfs1(path, buf, ST_WAIT)
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	Dup3(from int, to int, flags int) (err error)
261//sys	Exit(code int)
262//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
263//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
264//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
265//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
266//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
267//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
268//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
269//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
270//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
271//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
272//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
273//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
274//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
275//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
276//sys	Fchdir(fd int) (err error)
277//sys	Fchflags(fd int, flags int) (err error)
278//sys	Fchmod(fd int, mode uint32) (err error)
279//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
280//sys	Fchown(fd int, uid int, gid int) (err error)
281//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
282//sys	Flock(fd int, how int) (err error)
283//sys	Fpathconf(fd int, name int) (val int, err error)
284//sys	Fstat(fd int, stat *Stat_t) (err error)
285//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
286//sys	Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1
287//sys	Fsync(fd int) (err error)
288//sys	Ftruncate(fd int, length int64) (err error)
289//sysnb	Getegid() (egid int)
290//sysnb	Geteuid() (uid int)
291//sysnb	Getgid() (gid int)
292//sysnb	Getpgid(pid int) (pgid int, err error)
293//sysnb	Getpgrp() (pgrp int)
294//sysnb	Getpid() (pid int)
295//sysnb	Getppid() (ppid int)
296//sys	Getpriority(which int, who int) (prio int, err error)
297//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
298//sysnb	Getrusage(who int, rusage *Rusage) (err error)
299//sysnb	Getsid(pid int) (sid int, err error)
300//sysnb	Gettimeofday(tv *Timeval) (err error)
301//sysnb	Getuid() (uid int)
302//sys	Issetugid() (tainted bool)
303//sys	Kill(pid int, signum syscall.Signal) (err error)
304//sys	Kqueue() (fd int, err error)
305//sys	Lchown(path string, uid int, gid int) (err error)
306//sys	Link(path string, link string) (err error)
307//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
308//sys	Listen(s int, backlog int) (err error)
309//sys	Lstat(path string, stat *Stat_t) (err error)
310//sys	Mkdir(path string, mode uint32) (err error)
311//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
312//sys	Mkfifo(path string, mode uint32) (err error)
313//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
314//sys	Mknod(path string, mode uint32, dev int) (err error)
315//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
316//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
317//sys	Open(path string, mode int, perm uint32) (fd int, err error)
318//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
319//sys	Pathconf(path string, name int) (val int, err error)
320//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
321//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
322//sys	read(fd int, p []byte) (n int, err error)
323//sys	Readlink(path string, buf []byte) (n int, err error)
324//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
325//sys	Rename(from string, to string) (err error)
326//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
327//sys	Revoke(path string) (err error)
328//sys	Rmdir(path string) (err error)
329//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
330//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
331//sysnb	Setegid(egid int) (err error)
332//sysnb	Seteuid(euid int) (err error)
333//sysnb	Setgid(gid int) (err error)
334//sysnb	Setpgid(pid int, pgid int) (err error)
335//sys	Setpriority(which int, who int, prio int) (err error)
336//sysnb	Setregid(rgid int, egid int) (err error)
337//sysnb	Setreuid(ruid int, euid int) (err error)
338//sysnb	Setrlimit(which int, lim *Rlimit) (err error)
339//sysnb	Setsid() (pid int, err error)
340//sysnb	Settimeofday(tp *Timeval) (err error)
341//sysnb	Setuid(uid int) (err error)
342//sys	Stat(path string, stat *Stat_t) (err error)
343//sys	Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1
344//sys	Symlink(path string, link string) (err error)
345//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
346//sys	Sync() (err error)
347//sys	Truncate(path string, length int64) (err error)
348//sys	Umask(newmask int) (oldmask int)
349//sys	Unlink(path string) (err error)
350//sys	Unlinkat(dirfd int, path string, flags int) (err error)
351//sys	Unmount(path string, flags int) (err error)
352//sys	write(fd int, p []byte) (n int, err error)
353//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
354//sys	munmap(addr uintptr, length uintptr) (err error)
355//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
356//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
357//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
358
359/*
360 * Unimplemented
361 */
362// ____semctl13
363// __clone
364// __fhopen40
365// __fhstat40
366// __fhstatvfs140
367// __fstat30
368// __getcwd
369// __getfh30
370// __getlogin
371// __lstat30
372// __mount50
373// __msgctl13
374// __msync13
375// __ntp_gettime30
376// __posix_chown
377// __posix_fchown
378// __posix_lchown
379// __posix_rename
380// __setlogin
381// __shmctl13
382// __sigaction_sigtramp
383// __sigaltstack14
384// __sigpending14
385// __sigprocmask14
386// __sigsuspend14
387// __sigtimedwait
388// __stat30
389// __syscall
390// __vfork14
391// _ksem_close
392// _ksem_destroy
393// _ksem_getvalue
394// _ksem_init
395// _ksem_open
396// _ksem_post
397// _ksem_trywait
398// _ksem_unlink
399// _ksem_wait
400// _lwp_continue
401// _lwp_create
402// _lwp_ctl
403// _lwp_detach
404// _lwp_exit
405// _lwp_getname
406// _lwp_getprivate
407// _lwp_kill
408// _lwp_park
409// _lwp_self
410// _lwp_setname
411// _lwp_setprivate
412// _lwp_suspend
413// _lwp_unpark
414// _lwp_unpark_all
415// _lwp_wait
416// _lwp_wakeup
417// _pset_bind
418// _sched_getaffinity
419// _sched_getparam
420// _sched_setaffinity
421// _sched_setparam
422// acct
423// aio_cancel
424// aio_error
425// aio_fsync
426// aio_read
427// aio_return
428// aio_suspend
429// aio_write
430// break
431// clock_getres
432// clock_gettime
433// clock_settime
434// compat_09_ogetdomainname
435// compat_09_osetdomainname
436// compat_09_ouname
437// compat_10_omsgsys
438// compat_10_osemsys
439// compat_10_oshmsys
440// compat_12_fstat12
441// compat_12_getdirentries
442// compat_12_lstat12
443// compat_12_msync
444// compat_12_oreboot
445// compat_12_oswapon
446// compat_12_stat12
447// compat_13_sigaction13
448// compat_13_sigaltstack13
449// compat_13_sigpending13
450// compat_13_sigprocmask13
451// compat_13_sigreturn13
452// compat_13_sigsuspend13
453// compat_14___semctl
454// compat_14_msgctl
455// compat_14_shmctl
456// compat_16___sigaction14
457// compat_16___sigreturn14
458// compat_20_fhstatfs
459// compat_20_fstatfs
460// compat_20_getfsstat
461// compat_20_statfs
462// compat_30___fhstat30
463// compat_30___fstat13
464// compat_30___lstat13
465// compat_30___stat13
466// compat_30_fhopen
467// compat_30_fhstat
468// compat_30_fhstatvfs1
469// compat_30_getdents
470// compat_30_getfh
471// compat_30_ntp_gettime
472// compat_30_socket
473// compat_40_mount
474// compat_43_fstat43
475// compat_43_lstat43
476// compat_43_oaccept
477// compat_43_ocreat
478// compat_43_oftruncate
479// compat_43_ogetdirentries
480// compat_43_ogetdtablesize
481// compat_43_ogethostid
482// compat_43_ogethostname
483// compat_43_ogetkerninfo
484// compat_43_ogetpagesize
485// compat_43_ogetpeername
486// compat_43_ogetrlimit
487// compat_43_ogetsockname
488// compat_43_okillpg
489// compat_43_olseek
490// compat_43_ommap
491// compat_43_oquota
492// compat_43_orecv
493// compat_43_orecvfrom
494// compat_43_orecvmsg
495// compat_43_osend
496// compat_43_osendmsg
497// compat_43_osethostid
498// compat_43_osethostname
499// compat_43_osetrlimit
500// compat_43_osigblock
501// compat_43_osigsetmask
502// compat_43_osigstack
503// compat_43_osigvec
504// compat_43_otruncate
505// compat_43_owait
506// compat_43_stat43
507// execve
508// extattr_delete_fd
509// extattr_delete_file
510// extattr_delete_link
511// extattr_get_fd
512// extattr_get_file
513// extattr_get_link
514// extattr_list_fd
515// extattr_list_file
516// extattr_list_link
517// extattr_set_fd
518// extattr_set_file
519// extattr_set_link
520// extattrctl
521// fchroot
522// fdatasync
523// fgetxattr
524// fktrace
525// flistxattr
526// fork
527// fremovexattr
528// fsetxattr
529// fstatvfs1
530// fsync_range
531// getcontext
532// getitimer
533// getvfsstat
534// getxattr
535// ktrace
536// lchflags
537// lchmod
538// lfs_bmapv
539// lfs_markv
540// lfs_segclean
541// lfs_segwait
542// lgetxattr
543// lio_listio
544// listxattr
545// llistxattr
546// lremovexattr
547// lseek
548// lsetxattr
549// lutimes
550// madvise
551// mincore
552// minherit
553// modctl
554// mq_close
555// mq_getattr
556// mq_notify
557// mq_open
558// mq_receive
559// mq_send
560// mq_setattr
561// mq_timedreceive
562// mq_timedsend
563// mq_unlink
564// mremap
565// msgget
566// msgrcv
567// msgsnd
568// nfssvc
569// ntp_adjtime
570// pmc_control
571// pmc_get_info
572// pollts
573// preadv
574// profil
575// pselect
576// pset_assign
577// pset_create
578// pset_destroy
579// ptrace
580// pwritev
581// quotactl
582// rasctl
583// readv
584// reboot
585// removexattr
586// sa_enable
587// sa_preempt
588// sa_register
589// sa_setconcurrency
590// sa_stacks
591// sa_yield
592// sbrk
593// sched_yield
594// semconfig
595// semget
596// semop
597// setcontext
598// setitimer
599// setxattr
600// shmat
601// shmdt
602// shmget
603// sstk
604// statvfs1
605// swapctl
606// sysarch
607// syscall
608// timer_create
609// timer_delete
610// timer_getoverrun
611// timer_gettime
612// timer_settime
613// undelete
614// utrace
615// uuidgen
616// vadvise
617// vfork
618// writev
619