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 const ImplementsGetwd = true
23 func Getwd() (string, error) {
24 buf := make([]byte, 2048)
25 attrs, err := getAttrList(".", attrList{CommonAttr: attrCmnFullpath}, buf, 0)
26 if err == nil && len(attrs) == 1 && len(attrs[0]) >= 2 {
27 wd := string(attrs[0])
28 // Sanity check that it's an absolute path and ends
29 // in a null byte, which we then strip.
30 if wd[0] == '/' && wd[len(wd)-1] == 0 {
31 return wd[:len(wd)-1], nil
34 // If pkg/os/getwd.go gets ENOTSUP, it will fall back to the
39 type SockaddrDatalink struct {
48 raw RawSockaddrDatalink
51 // Translate "kern.hostname" to []_C_int{0,1,2,3}.
52 func nametomib(name string) (mib []_C_int, err error) {
53 const siz = unsafe.Sizeof(mib[0])
55 // NOTE(rsc): It seems strange to set the buffer to have
56 // size CTL_MAXNAME+2 but use only CTL_MAXNAME
57 // as the size. I don't know why the +2 is here, but the
58 // kernel uses +2 for its own implementation of this function.
59 // I am scared that if we don't include the +2 here, the kernel
60 // will silently write 2 words farther than we specify
61 // and we'll get memory corruption.
62 var buf [CTL_MAXNAME + 2]_C_int
63 n := uintptr(CTL_MAXNAME) * siz
65 p := (*byte)(unsafe.Pointer(&buf[0]))
66 bytes, err := ByteSliceFromString(name)
71 // Magic sysctl: "setting" 0.3 to a string name
72 // lets you read back the array of integers form.
73 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
76 return buf[0 : n/siz], nil
79 func direntIno(buf []byte) (uint64, bool) {
80 return readInt(buf, unsafe.Offsetof(Dirent{}.Ino), unsafe.Sizeof(Dirent{}.Ino))
83 func direntReclen(buf []byte) (uint64, bool) {
84 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
87 func direntNamlen(buf []byte) (uint64, bool) {
88 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
91 //sys ptrace(request int, pid int, addr uintptr, data uintptr) (err error)
92 func PtraceAttach(pid int) (err error) { return ptrace(PT_ATTACH, pid, 0, 0) }
93 func PtraceDetach(pid int) (err error) { return ptrace(PT_DETACH, pid, 0, 0) }
97 attrCmnFullpath = 0x08000000
100 type attrList struct {
110 func getAttrList(path string, attrList attrList, attrBuf []byte, options uint) (attrs [][]byte, err error) {
111 if len(attrBuf) < 4 {
112 return nil, errorspkg.New("attrBuf too small")
114 attrList.bitmapCount = attrBitMapCount
117 _p0, err = BytePtrFromString(path)
122 _, _, e1 := Syscall6(
124 uintptr(unsafe.Pointer(_p0)),
125 uintptr(unsafe.Pointer(&attrList)),
126 uintptr(unsafe.Pointer(&attrBuf[0])),
127 uintptr(len(attrBuf)),
134 size := *(*uint32)(unsafe.Pointer(&attrBuf[0]))
136 // dat is the section of attrBuf that contains valid data,
137 // without the 4 byte length header. All attribute offsets
138 // are relative to dat.
140 if int(size) < len(attrBuf) {
143 dat = dat[4:] // remove length prefix
145 for i := uint32(0); int(i) < len(dat); {
148 return attrs, errorspkg.New("truncated attribute header")
150 datOff := *(*int32)(unsafe.Pointer(&header[0]))
151 attrLen := *(*uint32)(unsafe.Pointer(&header[4]))
152 if datOff < 0 || uint32(datOff)+attrLen > uint32(len(dat)) {
153 return attrs, errorspkg.New("truncated results; attrBuf too small")
155 end := uint32(datOff) + attrLen
156 attrs = append(attrs, dat[datOff:end])
158 if r := i % 4; r != 0 {
165 //sysnb pipe() (r int, w int, err error)
167 func Pipe(p []int) (err error) {
171 p[0], p[1], err = pipe()
175 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
176 var _p0 unsafe.Pointer
179 _p0 = unsafe.Pointer(&buf[0])
180 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
182 r0, _, e1 := Syscall(SYS_GETFSSTAT64, uintptr(_p0), bufsize, uintptr(flags))
190 func utimensat(dirfd int, path string, times *[2]Timespec, flags int) error {
191 // Darwin doesn't support SYS_UTIMENSAT
199 //sys kill(pid int, signum int, posix int) (err error)
201 func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) }
203 //sys ioctl(fd int, req uint, arg uintptr) (err error)
205 // ioctl itself should not be exposed directly, but additional get/set
206 // functions for specific types are permissible.
208 // IoctlSetInt performs an ioctl operation which sets an integer value
209 // on fd, using the specified request number.
210 func IoctlSetInt(fd int, req uint, value int) error {
211 return ioctl(fd, req, uintptr(value))
214 func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
215 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
218 func IoctlSetTermios(fd int, req uint, value *Termios) error {
219 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
222 // IoctlGetInt performs an ioctl operation which gets an integer value
223 // from fd, using the specified request number.
224 func IoctlGetInt(fd int, req uint) (int, error) {
226 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
230 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
232 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
236 func IoctlGetTermios(fd int, req uint) (*Termios, error) {
238 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
245 //sys Access(path string, mode uint32) (err error)
246 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
247 //sys Chdir(path string) (err error)
248 //sys Chflags(path string, flags int) (err error)
249 //sys Chmod(path string, mode uint32) (err error)
250 //sys Chown(path string, uid int, gid int) (err error)
251 //sys Chroot(path string) (err error)
252 //sys Close(fd int) (err error)
253 //sys Dup(fd int) (nfd int, err error)
254 //sys Dup2(from int, to int) (err error)
255 //sys Exchangedata(path1 string, path2 string, options int) (err error)
257 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
258 //sys Fchdir(fd int) (err error)
259 //sys Fchflags(fd int, flags int) (err error)
260 //sys Fchmod(fd int, mode uint32) (err error)
261 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
262 //sys Fchown(fd int, uid int, gid int) (err error)
263 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
264 //sys Flock(fd int, how int) (err error)
265 //sys Fpathconf(fd int, name int) (val int, err error)
266 //sys Fstat(fd int, stat *Stat_t) (err error) = SYS_FSTAT64
267 //sys Fstatfs(fd int, stat *Statfs_t) (err error) = SYS_FSTATFS64
268 //sys Fsync(fd int) (err error)
269 //sys Ftruncate(fd int, length int64) (err error)
270 //sys Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) = SYS_GETDIRENTRIES64
271 //sys Getdtablesize() (size int)
272 //sysnb Getegid() (egid int)
273 //sysnb Geteuid() (uid int)
274 //sysnb Getgid() (gid int)
275 //sysnb Getpgid(pid int) (pgid int, err error)
276 //sysnb Getpgrp() (pgrp int)
277 //sysnb Getpid() (pid int)
278 //sysnb Getppid() (ppid int)
279 //sys Getpriority(which int, who int) (prio int, err error)
280 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
281 //sysnb Getrusage(who int, rusage *Rusage) (err error)
282 //sysnb Getsid(pid int) (sid int, err error)
283 //sysnb Getuid() (uid int)
284 //sysnb Issetugid() (tainted bool)
285 //sys Kqueue() (fd int, err error)
286 //sys Lchown(path string, uid int, gid int) (err error)
287 //sys Link(path string, link string) (err error)
288 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
289 //sys Listen(s int, backlog int) (err error)
290 //sys Lstat(path string, stat *Stat_t) (err error) = SYS_LSTAT64
291 //sys Mkdir(path string, mode uint32) (err error)
292 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
293 //sys Mkfifo(path string, mode uint32) (err error)
294 //sys Mknod(path string, mode uint32, dev int) (err error)
295 //sys Open(path string, mode int, perm uint32) (fd int, err error)
296 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
297 //sys Pathconf(path string, name int) (val int, err error)
298 //sys Pread(fd int, p []byte, offset int64) (n int, err error)
299 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
300 //sys read(fd int, p []byte) (n int, err error)
301 //sys Readlink(path string, buf []byte) (n int, err error)
302 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
303 //sys Rename(from string, to string) (err error)
304 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
305 //sys Revoke(path string) (err error)
306 //sys Rmdir(path string) (err error)
307 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
308 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
309 //sys Setegid(egid int) (err error)
310 //sysnb Seteuid(euid int) (err error)
311 //sysnb Setgid(gid int) (err error)
312 //sys Setlogin(name string) (err error)
313 //sysnb Setpgid(pid int, pgid int) (err error)
314 //sys Setpriority(which int, who int, prio int) (err error)
315 //sys Setprivexec(flag int) (err error)
316 //sysnb Setregid(rgid int, egid int) (err error)
317 //sysnb Setreuid(ruid int, euid int) (err error)
318 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
319 //sysnb Setsid() (pid int, err error)
320 //sysnb Settimeofday(tp *Timeval) (err error)
321 //sysnb Setuid(uid int) (err error)
322 //sys Stat(path string, stat *Stat_t) (err error) = SYS_STAT64
323 //sys Statfs(path string, stat *Statfs_t) (err error) = SYS_STATFS64
324 //sys Symlink(path string, link string) (err error)
325 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
326 //sys Sync() (err error)
327 //sys Truncate(path string, length int64) (err error)
328 //sys Umask(newmask int) (oldmask int)
329 //sys Undelete(path string) (err error)
330 //sys Unlink(path string) (err error)
331 //sys Unlinkat(dirfd int, path string, flags int) (err error)
332 //sys Unmount(path string, flags int) (err error)
333 //sys write(fd int, p []byte) (n int, err error)
334 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
335 //sys munmap(addr uintptr, length uintptr) (err error)
336 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
337 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
372 // Kqueue_from_portset_np
440 // Shared_region_check_np
441 // Shared_region_map_np
442 // __pthread_mutex_destroy
443 // __pthread_mutex_init
444 // __pthread_mutex_lock
445 // __pthread_mutex_trylock
446 // __pthread_mutex_unlock
447 // __pthread_cond_init
448 // __pthread_cond_destroy
449 // __pthread_cond_broadcast
450 // __pthread_cond_signal
452 // __pthread_cond_timedwait
461 // __pthread_cond_wait
466 // __disable_threadsignal
467 // __pthread_markcancel
468 // __pthread_canceled
487 // Bsdthread_terminate
489 // Bsdthread_register
520 // Sigsuspend_nocancel
531 // Aio_suspend_nocancel
532 // __sigwait_nocancel
533 // __semwait_signal_nocancel