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)
114func Pipe(p []int) (err error) {
115	if len(p) != 2 {
116		return EINVAL
117	}
118	p[0], p[1], err = pipe()
119	return
120}
121
122//sys Getdents(fd int, buf []byte) (n int, err error)
123func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
124	n, err = Getdents(fd, buf)
125	if err != nil || basep == nil {
126		return
127	}
128
129	var off int64
130	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
131	if err != nil {
132		*basep = ^uintptr(0)
133		return
134	}
135	*basep = uintptr(off)
136	if unsafe.Sizeof(*basep) == 8 {
137		return
138	}
139	if off>>32 != 0 {
140		// We can't stuff the offset back into a uintptr, so any
141		// future calls would be suspect. Generate an error.
142		// EIO is allowed by getdirentries.
143		err = EIO
144	}
145	return
146}
147
148//sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
149
150// TODO
151func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
152	return -1, ENOSYS
153}
154
155func setattrlistTimes(path string, times []Timespec, flags int) error {
156	// used on Darwin for UtimesNano
157	return ENOSYS
158}
159
160//sys	ioctl(fd int, req uint, arg uintptr) (err error)
161
162//sys   sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
163
164func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
165	var value Ptmget
166	err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
167	runtime.KeepAlive(value)
168	return &value, err
169}
170
171func Uname(uname *Utsname) error {
172	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
173	n := unsafe.Sizeof(uname.Sysname)
174	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
175		return err
176	}
177
178	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
179	n = unsafe.Sizeof(uname.Nodename)
180	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
181		return err
182	}
183
184	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
185	n = unsafe.Sizeof(uname.Release)
186	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
187		return err
188	}
189
190	mib = []_C_int{CTL_KERN, KERN_VERSION}
191	n = unsafe.Sizeof(uname.Version)
192	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
193		return err
194	}
195
196	// The version might have newlines or tabs in it, convert them to
197	// spaces.
198	for i, b := range uname.Version {
199		if b == '\n' || b == '\t' {
200			if i == len(uname.Version)-1 {
201				uname.Version[i] = 0
202			} else {
203				uname.Version[i] = ' '
204			}
205		}
206	}
207
208	mib = []_C_int{CTL_HW, HW_MACHINE}
209	n = unsafe.Sizeof(uname.Machine)
210	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
211		return err
212	}
213
214	return nil
215}
216
217func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
218	if raceenabled {
219		raceReleaseMerge(unsafe.Pointer(&ioSync))
220	}
221	return sendfile(outfd, infd, offset, count)
222}
223
224func Fstatvfs(fd int, buf *Statvfs_t) (err error) {
225	return Fstatvfs1(fd, buf, ST_WAIT)
226}
227
228func Statvfs(path string, buf *Statvfs_t) (err error) {
229	return Statvfs1(path, buf, ST_WAIT)
230}
231
232/*
233 * Exposed directly
234 */
235//sys	Access(path string, mode uint32) (err error)
236//sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
237//sys	Chdir(path string) (err error)
238//sys	Chflags(path string, flags int) (err error)
239//sys	Chmod(path string, mode uint32) (err error)
240//sys	Chown(path string, uid int, gid int) (err error)
241//sys	Chroot(path string) (err error)
242//sys	Close(fd int) (err error)
243//sys	Dup(fd int) (nfd int, err error)
244//sys	Dup2(from int, to int) (err error)
245//sys	Dup3(from int, to int, flags int) (err error)
246//sys	Exit(code int)
247//sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
248//sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
249//sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
250//sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
251//sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
252//sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
253//sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
254//sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
255//sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
256//sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
257//sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
258//sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
259//sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
260//sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
261//sys	Fchdir(fd int) (err error)
262//sys	Fchflags(fd int, flags int) (err error)
263//sys	Fchmod(fd int, mode uint32) (err error)
264//sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
265//sys	Fchown(fd int, uid int, gid int) (err error)
266//sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
267//sys	Flock(fd int, how int) (err error)
268//sys	Fpathconf(fd int, name int) (val int, err error)
269//sys	Fstat(fd int, stat *Stat_t) (err error)
270//sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
271//sys	Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1
272//sys	Fsync(fd int) (err error)
273//sys	Ftruncate(fd int, length int64) (err error)
274//sysnb	Getegid() (egid int)
275//sysnb	Geteuid() (uid int)
276//sysnb	Getgid() (gid int)
277//sysnb	Getpgid(pid int) (pgid int, err error)
278//sysnb	Getpgrp() (pgrp int)
279//sysnb	Getpid() (pid int)
280//sysnb	Getppid() (ppid int)
281//sys	Getpriority(which int, who int) (prio int, err error)
282//sysnb	Getrlimit(which int, lim *Rlimit) (err error)
283//sysnb	Getrusage(who int, rusage *Rusage) (err error)
284//sysnb	Getsid(pid int) (sid int, err error)
285//sysnb	Gettimeofday(tv *Timeval) (err error)
286//sysnb	Getuid() (uid int)
287//sys	Issetugid() (tainted bool)
288//sys	Kill(pid int, signum syscall.Signal) (err error)
289//sys	Kqueue() (fd int, err error)
290//sys	Lchown(path string, uid int, gid int) (err error)
291//sys	Link(path string, link string) (err error)
292//sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
293//sys	Listen(s int, backlog int) (err error)
294//sys	Lstat(path string, stat *Stat_t) (err error)
295//sys	Mkdir(path string, mode uint32) (err error)
296//sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
297//sys	Mkfifo(path string, mode uint32) (err error)
298//sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
299//sys	Mknod(path string, mode uint32, dev int) (err error)
300//sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
301//sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
302//sys	Open(path string, mode int, perm uint32) (fd int, err error)
303//sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
304//sys	Pathconf(path string, name int) (val int, err error)
305//sys	Pread(fd int, p []byte, offset int64) (n int, err error)
306//sys	Pwrite(fd int, p []byte, offset int64) (n int, err error)
307//sys	read(fd int, p []byte) (n int, err error)
308//sys	Readlink(path string, buf []byte) (n int, err error)
309//sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
310//sys	Rename(from string, to string) (err error)
311//sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
312//sys	Revoke(path string) (err error)
313//sys	Rmdir(path string) (err error)
314//sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
315//sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
316//sysnb	Setegid(egid int) (err error)
317//sysnb	Seteuid(euid int) (err error)
318//sysnb	Setgid(gid int) (err error)
319//sysnb	Setpgid(pid int, pgid int) (err error)
320//sys	Setpriority(which int, who int, prio int) (err error)
321//sysnb	Setregid(rgid int, egid int) (err error)
322//sysnb	Setreuid(ruid int, euid int) (err error)
323//sysnb	Setrlimit(which int, lim *Rlimit) (err error)
324//sysnb	Setsid() (pid int, err error)
325//sysnb	Settimeofday(tp *Timeval) (err error)
326//sysnb	Setuid(uid int) (err error)
327//sys	Stat(path string, stat *Stat_t) (err error)
328//sys	Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1
329//sys	Symlink(path string, link string) (err error)
330//sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
331//sys	Sync() (err error)
332//sys	Truncate(path string, length int64) (err error)
333//sys	Umask(newmask int) (oldmask int)
334//sys	Unlink(path string) (err error)
335//sys	Unlinkat(dirfd int, path string, flags int) (err error)
336//sys	Unmount(path string, flags int) (err error)
337//sys	write(fd int, p []byte) (n int, err error)
338//sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
339//sys	munmap(addr uintptr, length uintptr) (err error)
340//sys	readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
341//sys	writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
342//sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
343
344/*
345 * Unimplemented
346 */
347// ____semctl13
348// __clone
349// __fhopen40
350// __fhstat40
351// __fhstatvfs140
352// __fstat30
353// __getcwd
354// __getfh30
355// __getlogin
356// __lstat30
357// __mount50
358// __msgctl13
359// __msync13
360// __ntp_gettime30
361// __posix_chown
362// __posix_fchown
363// __posix_lchown
364// __posix_rename
365// __setlogin
366// __shmctl13
367// __sigaction_sigtramp
368// __sigaltstack14
369// __sigpending14
370// __sigprocmask14
371// __sigsuspend14
372// __sigtimedwait
373// __stat30
374// __syscall
375// __vfork14
376// _ksem_close
377// _ksem_destroy
378// _ksem_getvalue
379// _ksem_init
380// _ksem_open
381// _ksem_post
382// _ksem_trywait
383// _ksem_unlink
384// _ksem_wait
385// _lwp_continue
386// _lwp_create
387// _lwp_ctl
388// _lwp_detach
389// _lwp_exit
390// _lwp_getname
391// _lwp_getprivate
392// _lwp_kill
393// _lwp_park
394// _lwp_self
395// _lwp_setname
396// _lwp_setprivate
397// _lwp_suspend
398// _lwp_unpark
399// _lwp_unpark_all
400// _lwp_wait
401// _lwp_wakeup
402// _pset_bind
403// _sched_getaffinity
404// _sched_getparam
405// _sched_setaffinity
406// _sched_setparam
407// acct
408// aio_cancel
409// aio_error
410// aio_fsync
411// aio_read
412// aio_return
413// aio_suspend
414// aio_write
415// break
416// clock_getres
417// clock_gettime
418// clock_settime
419// compat_09_ogetdomainname
420// compat_09_osetdomainname
421// compat_09_ouname
422// compat_10_omsgsys
423// compat_10_osemsys
424// compat_10_oshmsys
425// compat_12_fstat12
426// compat_12_getdirentries
427// compat_12_lstat12
428// compat_12_msync
429// compat_12_oreboot
430// compat_12_oswapon
431// compat_12_stat12
432// compat_13_sigaction13
433// compat_13_sigaltstack13
434// compat_13_sigpending13
435// compat_13_sigprocmask13
436// compat_13_sigreturn13
437// compat_13_sigsuspend13
438// compat_14___semctl
439// compat_14_msgctl
440// compat_14_shmctl
441// compat_16___sigaction14
442// compat_16___sigreturn14
443// compat_20_fhstatfs
444// compat_20_fstatfs
445// compat_20_getfsstat
446// compat_20_statfs
447// compat_30___fhstat30
448// compat_30___fstat13
449// compat_30___lstat13
450// compat_30___stat13
451// compat_30_fhopen
452// compat_30_fhstat
453// compat_30_fhstatvfs1
454// compat_30_getdents
455// compat_30_getfh
456// compat_30_ntp_gettime
457// compat_30_socket
458// compat_40_mount
459// compat_43_fstat43
460// compat_43_lstat43
461// compat_43_oaccept
462// compat_43_ocreat
463// compat_43_oftruncate
464// compat_43_ogetdirentries
465// compat_43_ogetdtablesize
466// compat_43_ogethostid
467// compat_43_ogethostname
468// compat_43_ogetkerninfo
469// compat_43_ogetpagesize
470// compat_43_ogetpeername
471// compat_43_ogetrlimit
472// compat_43_ogetsockname
473// compat_43_okillpg
474// compat_43_olseek
475// compat_43_ommap
476// compat_43_oquota
477// compat_43_orecv
478// compat_43_orecvfrom
479// compat_43_orecvmsg
480// compat_43_osend
481// compat_43_osendmsg
482// compat_43_osethostid
483// compat_43_osethostname
484// compat_43_osetrlimit
485// compat_43_osigblock
486// compat_43_osigsetmask
487// compat_43_osigstack
488// compat_43_osigvec
489// compat_43_otruncate
490// compat_43_owait
491// compat_43_stat43
492// execve
493// extattr_delete_fd
494// extattr_delete_file
495// extattr_delete_link
496// extattr_get_fd
497// extattr_get_file
498// extattr_get_link
499// extattr_list_fd
500// extattr_list_file
501// extattr_list_link
502// extattr_set_fd
503// extattr_set_file
504// extattr_set_link
505// extattrctl
506// fchroot
507// fdatasync
508// fgetxattr
509// fktrace
510// flistxattr
511// fork
512// fremovexattr
513// fsetxattr
514// fstatvfs1
515// fsync_range
516// getcontext
517// getitimer
518// getvfsstat
519// getxattr
520// ktrace
521// lchflags
522// lchmod
523// lfs_bmapv
524// lfs_markv
525// lfs_segclean
526// lfs_segwait
527// lgetxattr
528// lio_listio
529// listxattr
530// llistxattr
531// lremovexattr
532// lseek
533// lsetxattr
534// lutimes
535// madvise
536// mincore
537// minherit
538// modctl
539// mq_close
540// mq_getattr
541// mq_notify
542// mq_open
543// mq_receive
544// mq_send
545// mq_setattr
546// mq_timedreceive
547// mq_timedsend
548// mq_unlink
549// mremap
550// msgget
551// msgrcv
552// msgsnd
553// nfssvc
554// ntp_adjtime
555// pmc_control
556// pmc_get_info
557// pollts
558// preadv
559// profil
560// pselect
561// pset_assign
562// pset_create
563// pset_destroy
564// ptrace
565// pwritev
566// quotactl
567// rasctl
568// readv
569// reboot
570// removexattr
571// sa_enable
572// sa_preempt
573// sa_register
574// sa_setconcurrency
575// sa_stacks
576// sa_yield
577// sbrk
578// sched_yield
579// semconfig
580// semget
581// semop
582// setcontext
583// setitimer
584// setxattr
585// shmat
586// shmdt
587// shmget
588// sstk
589// statvfs1
590// swapctl
591// sysarch
592// syscall
593// timer_create
594// timer_delete
595// timer_getoverrun
596// timer_gettime
597// timer_settime
598// undelete
599// utrace
600// uuidgen
601// vadvise
602// vfork
603// writev
604