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.
5 // Darwin 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.
21 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
22 type SockaddrDatalink struct {
31 raw RawSockaddrDatalink
34 // SockaddrCtl implements the Sockaddr interface for AF_SYSTEM type sockets.
35 type SockaddrCtl struct {
41 func (sa *SockaddrCtl) sockaddr() (unsafe.Pointer, _Socklen, error) {
42 sa.raw.Sc_len = SizeofSockaddrCtl
43 sa.raw.Sc_family = AF_SYSTEM
44 sa.raw.Ss_sysaddr = AF_SYS_CONTROL
46 sa.raw.Sc_unit = sa.Unit
47 return unsafe.Pointer(&sa.raw), SizeofSockaddrCtl, nil
50 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
51 switch rsa.Addr.Family {
53 pp := (*RawSockaddrCtl)(unsafe.Pointer(rsa))
54 if pp.Ss_sysaddr == AF_SYS_CONTROL {
55 sa := new(SockaddrCtl)
61 return nil, EAFNOSUPPORT
64 // Some external packages rely on SYS___SYSCTL being defined to implement their
65 // own sysctl wrappers. Provide it here, even though direct syscalls are no
66 // longer supported on darwin.
67 const SYS___SYSCTL = SYS_SYSCTL
69 // Translate "kern.hostname" to []_C_int{0,1,2,3}.
70 func nametomib(name string) (mib []_C_int, err error) {
71 const siz = unsafe.Sizeof(mib[0])
73 // NOTE(rsc): It seems strange to set the buffer to have
74 // size CTL_MAXNAME+2 but use only CTL_MAXNAME
75 // as the size. I don't know why the +2 is here, but the
76 // kernel uses +2 for its own implementation of this function.
77 // I am scared that if we don't include the +2 here, the kernel
78 // will silently write 2 words farther than we specify
79 // and we'll get memory corruption.
80 var buf [CTL_MAXNAME + 2]_C_int
81 n := uintptr(CTL_MAXNAME) * siz
83 p := (*byte)(unsafe.Pointer(&buf[0]))
84 bytes, err := ByteSliceFromString(name)
89 // Magic sysctl: "setting" 0.3 to a string name
90 // lets you read back the array of integers form.
91 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
94 return buf[0 : n/siz], nil
97 func direntIno(buf []byte) (uint64, bool) {
98 return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
101 func direntReclen(buf []byte) (uint64, bool) {
102 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
105 func direntNamlen(buf []byte) (uint64, bool) {
106 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
109 func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) }
110 func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) }
112 type attrList struct {
122 //sysnb pipe(p *[2]int32) (err error)
124 func Pipe(p []int) (err error) {
135 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
136 var _p0 unsafe.Pointer
139 _p0 = unsafe.Pointer(&buf[0])
140 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
142 return getfsstat(_p0, bufsize, flags)
145 func xattrPointer(dest []byte) *byte {
146 // It's only when dest is set to NULL that the OS X implementations of
147 // getxattr() and listxattr() return the current sizes of the named attributes.
148 // An empty byte array is not sufficient. To maintain the same behaviour as the
149 // linux implementation, we wrap around the system calls and pass in NULL when
158 //sys getxattr(path string, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
160 func Getxattr(path string, attr string, dest []byte) (sz int, err error) {
161 return getxattr(path, attr, xattrPointer(dest), len(dest), 0, 0)
164 func Lgetxattr(link string, attr string, dest []byte) (sz int, err error) {
165 return getxattr(link, attr, xattrPointer(dest), len(dest), 0, XATTR_NOFOLLOW)
168 //sys fgetxattr(fd int, attr string, dest *byte, size int, position uint32, options int) (sz int, err error)
170 func Fgetxattr(fd int, attr string, dest []byte) (sz int, err error) {
171 return fgetxattr(fd, attr, xattrPointer(dest), len(dest), 0, 0)
174 //sys setxattr(path string, attr string, data *byte, size int, position uint32, options int) (err error)
176 func Setxattr(path string, attr string, data []byte, flags int) (err error) {
177 // The parameters for the OS X implementation vary slightly compared to the
178 // linux system call, specifically the position parameter:
184 // const void *value,
195 // u_int32_t position,
199 // position specifies the offset within the extended attribute. In the
200 // current implementation, only the resource fork extended attribute makes
201 // use of this argument. For all others, position is reserved. We simply
202 // default to setting it to zero.
203 return setxattr(path, attr, xattrPointer(data), len(data), 0, flags)
206 func Lsetxattr(link string, attr string, data []byte, flags int) (err error) {
207 return setxattr(link, attr, xattrPointer(data), len(data), 0, flags|XATTR_NOFOLLOW)
210 //sys fsetxattr(fd int, attr string, data *byte, size int, position uint32, options int) (err error)
212 func Fsetxattr(fd int, attr string, data []byte, flags int) (err error) {
213 return fsetxattr(fd, attr, xattrPointer(data), len(data), 0, 0)
216 //sys removexattr(path string, attr string, options int) (err error)
218 func Removexattr(path string, attr string) (err error) {
219 // We wrap around and explicitly zero out the options provided to the OS X
220 // implementation of removexattr, we do so for interoperability with the
222 return removexattr(path, attr, 0)
225 func Lremovexattr(link string, attr string) (err error) {
226 return removexattr(link, attr, XATTR_NOFOLLOW)
229 //sys fremovexattr(fd int, attr string, options int) (err error)
231 func Fremovexattr(fd int, attr string) (err error) {
232 return fremovexattr(fd, attr, 0)
235 //sys listxattr(path string, dest *byte, size int, options int) (sz int, err error)
237 func Listxattr(path string, dest []byte) (sz int, err error) {
238 return listxattr(path, xattrPointer(dest), len(dest), 0)
241 func Llistxattr(link string, dest []byte) (sz int, err error) {
242 return listxattr(link, xattrPointer(dest), len(dest), XATTR_NOFOLLOW)
245 //sys flistxattr(fd int, dest *byte, size int, options int) (sz int, err error)
247 func Flistxattr(fd int, dest []byte) (sz int, err error) {
248 return flistxattr(fd, xattrPointer(dest), len(dest), 0)
251 func setattrlistTimes(path string, times []Timespec, flags int) error {
252 _p0, err := BytePtrFromString(path)
257 var attrList attrList
258 attrList.bitmapCount = ATTR_BIT_MAP_COUNT
259 attrList.CommonAttr = ATTR_CMN_MODTIME | ATTR_CMN_ACCTIME
261 // order is mtime, atime: the opposite of Chtimes
262 attributes := [2]Timespec{times[1], times[0]}
264 if flags&AT_SYMLINK_NOFOLLOW != 0 {
265 options |= FSOPT_NOFOLLOW
269 unsafe.Pointer(&attrList),
270 unsafe.Pointer(&attributes),
271 unsafe.Sizeof(attributes),
275 //sys setattrlist(path *byte, list unsafe.Pointer, buf unsafe.Pointer, size uintptr, options int) (err error)
277 func utimensat(dirfd int, path string, times *[2]Timespec, flags int) error {
278 // Darwin doesn't support SYS_UTIMENSAT
286 //sys fcntl(fd int, cmd int, arg int) (val int, err error)
288 //sys kill(pid int, signum int, posix int) (err error)
290 func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) }
292 //sys ioctl(fd int, req uint, arg uintptr) (err error)
294 func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error {
295 err := ioctl(fd, CTLIOCGINFO, uintptr(unsafe.Pointer(ctlInfo)))
296 runtime.KeepAlive(ctlInfo)
300 // IfreqMTU is struct ifreq used to get or set a network device's MTU.
301 type IfreqMTU struct {
306 // IoctlGetIfreqMTU performs the SIOCGIFMTU ioctl operation on fd to get the MTU
307 // of the network device specified by ifname.
308 func IoctlGetIfreqMTU(fd int, ifname string) (*IfreqMTU, error) {
310 copy(ifreq.Name[:], ifname)
311 err := ioctl(fd, SIOCGIFMTU, uintptr(unsafe.Pointer(&ifreq)))
315 // IoctlSetIfreqMTU performs the SIOCSIFMTU ioctl operation on fd to set the MTU
316 // of the network device specified by ifreq.Name.
317 func IoctlSetIfreqMTU(fd int, ifreq *IfreqMTU) error {
318 err := ioctl(fd, SIOCSIFMTU, uintptr(unsafe.Pointer(ifreq)))
319 runtime.KeepAlive(ifreq)
323 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS_SYSCTL
325 func Uname(uname *Utsname) error {
326 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
327 n := unsafe.Sizeof(uname.Sysname)
328 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
332 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
333 n = unsafe.Sizeof(uname.Nodename)
334 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
338 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
339 n = unsafe.Sizeof(uname.Release)
340 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
344 mib = []_C_int{CTL_KERN, KERN_VERSION}
345 n = unsafe.Sizeof(uname.Version)
346 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
350 // The version might have newlines or tabs in it, convert them to
352 for i, b := range uname.Version {
353 if b == '\n' || b == '\t' {
354 if i == len(uname.Version)-1 {
357 uname.Version[i] = ' '
362 mib = []_C_int{CTL_HW, HW_MACHINE}
363 n = unsafe.Sizeof(uname.Machine)
364 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
371 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
373 raceReleaseMerge(unsafe.Pointer(&ioSync))
375 var length = int64(count)
376 err = sendfile(infd, outfd, *offset, &length, nil, 0)
377 written = int(length)
381 //sys sendfile(infd int, outfd int, offset int64, len *int64, hdtr unsafe.Pointer, flags int) (err error)
386 //sys Access(path string, mode uint32) (err error)
387 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
388 //sys Chdir(path string) (err error)
389 //sys Chflags(path string, flags int) (err error)
390 //sys Chmod(path string, mode uint32) (err error)
391 //sys Chown(path string, uid int, gid int) (err error)
392 //sys Chroot(path string) (err error)
393 //sys ClockGettime(clockid int32, time *Timespec) (err error)
394 //sys Close(fd int) (err error)
395 //sys Clonefile(src string, dst string, flags int) (err error)
396 //sys Clonefileat(srcDirfd int, src string, dstDirfd int, dst string, flags int) (err error)
397 //sys Dup(fd int) (nfd int, err error)
398 //sys Dup2(from int, to int) (err error)
399 //sys Exchangedata(path1 string, path2 string, options int) (err error)
401 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
402 //sys Fchdir(fd int) (err error)
403 //sys Fchflags(fd int, flags int) (err error)
404 //sys Fchmod(fd int, mode uint32) (err error)
405 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
406 //sys Fchown(fd int, uid int, gid int) (err error)
407 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
408 //sys Fclonefileat(srcDirfd int, dstDirfd int, dst string, flags int) (err error)
409 //sys Flock(fd int, how int) (err error)
410 //sys Fpathconf(fd int, name int) (val int, err error)
411 //sys Fsync(fd int) (err error)
412 //sys Ftruncate(fd int, length int64) (err error)
413 //sys Getcwd(buf []byte) (n int, err error)
414 //sys Getdtablesize() (size int)
415 //sysnb Getegid() (egid int)
416 //sysnb Geteuid() (uid int)
417 //sysnb Getgid() (gid int)
418 //sysnb Getpgid(pid int) (pgid int, err error)
419 //sysnb Getpgrp() (pgrp int)
420 //sysnb Getpid() (pid int)
421 //sysnb Getppid() (ppid int)
422 //sys Getpriority(which int, who int) (prio int, err error)
423 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
424 //sysnb Getrusage(who int, rusage *Rusage) (err error)
425 //sysnb Getsid(pid int) (sid int, err error)
426 //sysnb Gettimeofday(tp *Timeval) (err error)
427 //sysnb Getuid() (uid int)
428 //sysnb Issetugid() (tainted bool)
429 //sys Kqueue() (fd int, err error)
430 //sys Lchown(path string, uid int, gid int) (err error)
431 //sys Link(path string, link string) (err error)
432 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
433 //sys Listen(s int, backlog int) (err error)
434 //sys Mkdir(path string, mode uint32) (err error)
435 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
436 //sys Mkfifo(path string, mode uint32) (err error)
437 //sys Mknod(path string, mode uint32, dev int) (err error)
438 //sys Open(path string, mode int, perm uint32) (fd int, err error)
439 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
440 //sys Pathconf(path string, name int) (val int, err error)
441 //sys Pread(fd int, p []byte, offset int64) (n int, err error)
442 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
443 //sys read(fd int, p []byte) (n int, err error)
444 //sys Readlink(path string, buf []byte) (n int, err error)
445 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
446 //sys Rename(from string, to string) (err error)
447 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
448 //sys Revoke(path string) (err error)
449 //sys Rmdir(path string) (err error)
450 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
451 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
452 //sys Setegid(egid int) (err error)
453 //sysnb Seteuid(euid int) (err error)
454 //sysnb Setgid(gid int) (err error)
455 //sys Setlogin(name string) (err error)
456 //sysnb Setpgid(pid int, pgid int) (err error)
457 //sys Setpriority(which int, who int, prio int) (err error)
458 //sys Setprivexec(flag int) (err error)
459 //sysnb Setregid(rgid int, egid int) (err error)
460 //sysnb Setreuid(ruid int, euid int) (err error)
461 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
462 //sysnb Setsid() (pid int, err error)
463 //sysnb Settimeofday(tp *Timeval) (err error)
464 //sysnb Setuid(uid int) (err error)
465 //sys Symlink(path string, link string) (err error)
466 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
467 //sys Sync() (err error)
468 //sys Truncate(path string, length int64) (err error)
469 //sys Umask(newmask int) (oldmask int)
470 //sys Undelete(path string) (err error)
471 //sys Unlink(path string) (err error)
472 //sys Unlinkat(dirfd int, path string, flags int) (err error)
473 //sys Unmount(path string, flags int) (err error)
474 //sys write(fd int, p []byte) (n int, err error)
475 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
476 //sys munmap(addr uintptr, length uintptr) (err error)
477 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
478 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
513 // Kqueue_from_portset_np
572 // Shared_region_check_np
573 // Shared_region_map_np
574 // __pthread_mutex_destroy
575 // __pthread_mutex_init
576 // __pthread_mutex_lock
577 // __pthread_mutex_trylock
578 // __pthread_mutex_unlock
579 // __pthread_cond_init
580 // __pthread_cond_destroy
581 // __pthread_cond_broadcast
582 // __pthread_cond_signal
584 // __pthread_cond_timedwait
593 // __pthread_cond_wait
598 // __disable_threadsignal
599 // __pthread_markcancel
600 // __pthread_canceled
619 // Bsdthread_terminate
621 // Bsdthread_register
652 // Sigsuspend_nocancel
663 // Aio_suspend_nocancel
664 // __sigwait_nocancel
665 // __semwait_signal_nocancel