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 // FreeBSD 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 SYS_FSTAT_FREEBSD12 = 551 // { int fstat(int fd, _Out_ struct stat *sb); }
22 SYS_FSTATAT_FREEBSD12 = 552 // { int fstatat(int fd, _In_z_ char *path, \
23 SYS_GETDIRENTRIES_FREEBSD12 = 554 // { ssize_t getdirentries(int fd, \
24 SYS_STATFS_FREEBSD12 = 555 // { int statfs(_In_z_ char *path, \
25 SYS_FSTATFS_FREEBSD12 = 556 // { int fstatfs(int fd, \
26 SYS_GETFSSTAT_FREEBSD12 = 557 // { int getfsstat( \
27 SYS_MKNODAT_FREEBSD12 = 559 // { int mknodat(int fd, _In_z_ char *path, \
30 // See https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html.
32 osreldateOnce sync.Once
36 // INO64_FIRST from /usr/src/lib/libc/sys/compat-ino64.h
37 const _ino64First = 1200031
39 func supportsABI(ver uint32) bool {
40 osreldateOnce.Do(func() { osreldate, _ = SysctlUint32("kern.osreldate") })
41 return osreldate >= ver
44 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
45 type SockaddrDatalink struct {
54 raw RawSockaddrDatalink
57 // Translate "kern.hostname" to []_C_int{0,1,2,3}.
58 func nametomib(name string) (mib []_C_int, err error) {
59 const siz = unsafe.Sizeof(mib[0])
61 // NOTE(rsc): It seems strange to set the buffer to have
62 // size CTL_MAXNAME+2 but use only CTL_MAXNAME
63 // as the size. I don't know why the +2 is here, but the
64 // kernel uses +2 for its own implementation of this function.
65 // I am scared that if we don't include the +2 here, the kernel
66 // will silently write 2 words farther than we specify
67 // and we'll get memory corruption.
68 var buf [CTL_MAXNAME + 2]_C_int
69 n := uintptr(CTL_MAXNAME) * siz
71 p := (*byte)(unsafe.Pointer(&buf[0]))
72 bytes, err := ByteSliceFromString(name)
77 // Magic sysctl: "setting" 0.3 to a string name
78 // lets you read back the array of integers form.
79 if err = sysctl([]_C_int{0, 3}, p, &n, &bytes[0], uintptr(len(name))); err != nil {
82 return buf[0 : n/siz], nil
85 func Pipe(p []int) (err error) {
89 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
91 func Pipe2(p []int, flags int) error {
96 err := pipe2(&pp, flags)
102 func GetsockoptIPMreqn(fd, level, opt int) (*IPMreqn, error) {
104 vallen := _Socklen(SizeofIPMreqn)
105 errno := getsockopt(fd, level, opt, unsafe.Pointer(&value), &vallen)
109 func SetsockoptIPMreqn(fd, level, opt int, mreq *IPMreqn) (err error) {
110 return setsockopt(fd, level, opt, unsafe.Pointer(mreq), unsafe.Sizeof(*mreq))
113 func Accept4(fd, flags int) (nfd int, sa Sockaddr, err error) {
114 var rsa RawSockaddrAny
115 var len _Socklen = SizeofSockaddrAny
116 nfd, err = accept4(fd, &rsa, &len, flags)
120 if len > SizeofSockaddrAny {
121 panic("RawSockaddrAny too small")
123 sa, err = anyToSockaddr(fd, &rsa)
131 const ImplementsGetwd = true
133 //sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
135 func Getwd() (string, error) {
136 var buf [PathMax]byte
137 _, err := Getcwd(buf[0:])
145 return string(buf[:n]), nil
148 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
152 oldBuf []statfs_freebsd11_t
157 if supportsABI(_ino64First) {
158 _p0 = unsafe.Pointer(&buf[0])
159 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
162 oldBuf = make([]statfs_freebsd11_t, n)
163 _p0 = unsafe.Pointer(&oldBuf[0])
164 bufsize = unsafe.Sizeof(statfs_freebsd11_t{}) * uintptr(n)
168 var sysno uintptr = SYS_GETFSSTAT
169 if supportsABI(_ino64First) {
170 sysno = SYS_GETFSSTAT_FREEBSD12
172 r0, _, e1 := Syscall(sysno, uintptr(_p0), bufsize, uintptr(flags))
177 if e1 == 0 && needsConvert {
178 for i := range oldBuf {
179 buf[i].convertFrom(&oldBuf[i])
185 func setattrlistTimes(path string, times []Timespec, flags int) error {
186 // used on Darwin for UtimesNano
190 //sys ioctl(fd int, req uint, arg uintptr) (err error)
192 // ioctl itself should not be exposed directly, but additional get/set
193 // functions for specific types are permissible.
195 // IoctlSetInt performs an ioctl operation which sets an integer value
196 // on fd, using the specified request number.
197 func IoctlSetInt(fd int, req uint, value int) error {
198 return ioctl(fd, req, uintptr(value))
201 func ioctlSetWinsize(fd int, req uint, value *Winsize) error {
202 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
205 func ioctlSetTermios(fd int, req uint, value *Termios) error {
206 return ioctl(fd, req, uintptr(unsafe.Pointer(value)))
209 // IoctlGetInt performs an ioctl operation which gets an integer value
210 // from fd, using the specified request number.
211 func IoctlGetInt(fd int, req uint) (int, error) {
213 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
217 func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
219 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
223 func IoctlGetTermios(fd int, req uint) (*Termios, error) {
225 err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
229 func Uname(uname *Utsname) error {
230 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
231 n := unsafe.Sizeof(uname.Sysname)
232 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
236 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
237 n = unsafe.Sizeof(uname.Nodename)
238 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
242 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
243 n = unsafe.Sizeof(uname.Release)
244 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
248 mib = []_C_int{CTL_KERN, KERN_VERSION}
249 n = unsafe.Sizeof(uname.Version)
250 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
254 // The version might have newlines or tabs in it, convert them to
256 for i, b := range uname.Version {
257 if b == '\n' || b == '\t' {
258 if i == len(uname.Version)-1 {
261 uname.Version[i] = ' '
266 mib = []_C_int{CTL_HW, HW_MACHINE}
267 n = unsafe.Sizeof(uname.Machine)
268 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
275 func Stat(path string, st *Stat_t) (err error) {
276 var oldStat stat_freebsd11_t
277 if supportsABI(_ino64First) {
278 return fstatat_freebsd12(AT_FDCWD, path, st, 0)
280 err = stat(path, &oldStat)
285 st.convertFrom(&oldStat)
289 func Lstat(path string, st *Stat_t) (err error) {
290 var oldStat stat_freebsd11_t
291 if supportsABI(_ino64First) {
292 return fstatat_freebsd12(AT_FDCWD, path, st, AT_SYMLINK_NOFOLLOW)
294 err = lstat(path, &oldStat)
299 st.convertFrom(&oldStat)
303 func Fstat(fd int, st *Stat_t) (err error) {
304 var oldStat stat_freebsd11_t
305 if supportsABI(_ino64First) {
306 return fstat_freebsd12(fd, st)
308 err = fstat(fd, &oldStat)
313 st.convertFrom(&oldStat)
317 func Fstatat(fd int, path string, st *Stat_t, flags int) (err error) {
318 var oldStat stat_freebsd11_t
319 if supportsABI(_ino64First) {
320 return fstatat_freebsd12(fd, path, st, flags)
322 err = fstatat(fd, path, &oldStat, flags)
327 st.convertFrom(&oldStat)
331 func Statfs(path string, st *Statfs_t) (err error) {
332 var oldStatfs statfs_freebsd11_t
333 if supportsABI(_ino64First) {
334 return statfs_freebsd12(path, st)
336 err = statfs(path, &oldStatfs)
341 st.convertFrom(&oldStatfs)
345 func Fstatfs(fd int, st *Statfs_t) (err error) {
346 var oldStatfs statfs_freebsd11_t
347 if supportsABI(_ino64First) {
348 return fstatfs_freebsd12(fd, st)
350 err = fstatfs(fd, &oldStatfs)
355 st.convertFrom(&oldStatfs)
359 func Getdents(fd int, buf []byte) (n int, err error) {
360 return Getdirentries(fd, buf, nil)
363 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
364 if supportsABI(_ino64First) {
365 return getdirentries_freebsd12(fd, buf, basep)
368 // The old syscall entries are smaller than the new. Use 1/4 of the original
369 // buffer size rounded up to DIRBLKSIZ (see /usr/src/lib/libc/sys/getdirentries.c).
370 oldBufLen := roundup(len(buf)/4, _dirblksiz)
371 oldBuf := make([]byte, oldBufLen)
372 n, err = getdirentries(fd, oldBuf, basep)
373 if err == nil && n > 0 {
374 n = convertFromDirents11(buf, oldBuf[:n])
379 func Mknod(path string, mode uint32, dev uint64) (err error) {
381 if supportsABI(_ino64First) {
382 return mknodat_freebsd12(AT_FDCWD, path, mode, dev)
385 return mknod(path, mode, oldDev)
388 func Mknodat(fd int, path string, mode uint32, dev uint64) (err error) {
390 if supportsABI(_ino64First) {
391 return mknodat_freebsd12(fd, path, mode, dev)
394 return mknodat(fd, path, mode, oldDev)
397 // round x to the nearest multiple of y, larger or equal to x.
399 // from /usr/include/sys/param.h Macros for counting and rounding.
400 // #define roundup(x, y) ((((x)+((y)-1))/(y))*(y))
401 func roundup(x, y int) int {
402 return ((x + y - 1) / y) * y
405 func (s *Stat_t) convertFrom(old *stat_freebsd11_t) {
407 Dev: uint64(old.Dev),
408 Ino: uint64(old.Ino),
409 Nlink: uint64(old.Nlink),
413 Rdev: uint64(old.Rdev),
417 Birthtim: old.Birthtim,
420 Blksize: old.Blksize,
422 Gen: uint64(old.Gen),
426 func (s *Statfs_t) convertFrom(old *statfs_freebsd11_t) {
428 Version: _statfsVersion,
438 Syncwrites: old.Syncwrites,
439 Asyncwrites: old.Asyncwrites,
440 Syncreads: old.Syncreads,
441 Asyncreads: old.Asyncreads,
443 Namemax: old.Namemax,
452 sl := old.Fstypename[:]
453 n := clen(*(*[]byte)(unsafe.Pointer(&sl)))
454 copy(s.Fstypename[:], old.Fstypename[:n])
456 sl = old.Mntfromname[:]
457 n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
458 copy(s.Mntfromname[:], old.Mntfromname[:n])
460 sl = old.Mntonname[:]
461 n = clen(*(*[]byte)(unsafe.Pointer(&sl)))
462 copy(s.Mntonname[:], old.Mntonname[:n])
465 func convertFromDirents11(buf []byte, old []byte) int {
467 fixedSize = int(unsafe.Offsetof(Dirent{}.Name))
468 oldFixedSize = int(unsafe.Offsetof(dirent_freebsd11{}.Name))
473 for dstPos+fixedSize < len(buf) && srcPos+oldFixedSize < len(old) {
474 dstDirent := (*Dirent)(unsafe.Pointer(&buf[dstPos]))
475 srcDirent := (*dirent_freebsd11)(unsafe.Pointer(&old[srcPos]))
477 reclen := roundup(fixedSize+int(srcDirent.Namlen)+1, 8)
478 if dstPos+reclen > len(buf) {
482 dstDirent.Fileno = uint64(srcDirent.Fileno)
484 dstDirent.Reclen = uint16(reclen)
485 dstDirent.Type = srcDirent.Type
487 dstDirent.Namlen = uint16(srcDirent.Namlen)
490 copy(dstDirent.Name[:], srcDirent.Name[:srcDirent.Namlen])
491 padding := buf[dstPos+fixedSize+int(dstDirent.Namlen) : dstPos+reclen]
492 for i := range padding {
496 dstPos += int(dstDirent.Reclen)
497 srcPos += int(srcDirent.Reclen)
503 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
505 raceReleaseMerge(unsafe.Pointer(&ioSync))
507 return sendfile(outfd, infd, offset, count)
513 //sys Access(path string, mode uint32) (err error)
514 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
515 //sys CapEnter() (err error)
516 //sys capRightsGet(version int, fd int, rightsp *CapRights) (err error) = SYS___CAP_RIGHTS_GET
517 //sys capRightsLimit(fd int, rightsp *CapRights) (err error)
518 //sys Chdir(path string) (err error)
519 //sys Chflags(path string, flags int) (err error)
520 //sys Chmod(path string, mode uint32) (err error)
521 //sys Chown(path string, uid int, gid int) (err error)
522 //sys Chroot(path string) (err error)
523 //sys Close(fd int) (err error)
524 //sys Dup(fd int) (nfd int, err error)
525 //sys Dup2(from int, to int) (err error)
527 //sys ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
528 //sys ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
529 //sys ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
530 //sys ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
531 //sys ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
532 //sys ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
533 //sys ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
534 //sys ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
535 //sys ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
536 //sys ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
537 //sys ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
538 //sys ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
539 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
540 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
541 //sys Fchdir(fd int) (err error)
542 //sys Fchflags(fd int, flags int) (err error)
543 //sys Fchmod(fd int, mode uint32) (err error)
544 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
545 //sys Fchown(fd int, uid int, gid int) (err error)
546 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
547 //sys Flock(fd int, how int) (err error)
548 //sys Fpathconf(fd int, name int) (val int, err error)
549 //sys fstat(fd int, stat *stat_freebsd11_t) (err error)
550 //sys fstat_freebsd12(fd int, stat *Stat_t) (err error)
551 //sys fstatat(fd int, path string, stat *stat_freebsd11_t, flags int) (err error)
552 //sys fstatat_freebsd12(fd int, path string, stat *Stat_t, flags int) (err error)
553 //sys fstatfs(fd int, stat *statfs_freebsd11_t) (err error)
554 //sys fstatfs_freebsd12(fd int, stat *Statfs_t) (err error)
555 //sys Fsync(fd int) (err error)
556 //sys Ftruncate(fd int, length int64) (err error)
557 //sys getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error)
558 //sys getdirentries_freebsd12(fd int, buf []byte, basep *uintptr) (n int, err error)
559 //sys Getdtablesize() (size int)
560 //sysnb Getegid() (egid int)
561 //sysnb Geteuid() (uid int)
562 //sysnb Getgid() (gid int)
563 //sysnb Getpgid(pid int) (pgid int, err error)
564 //sysnb Getpgrp() (pgrp int)
565 //sysnb Getpid() (pid int)
566 //sysnb Getppid() (ppid int)
567 //sys Getpriority(which int, who int) (prio int, err error)
568 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
569 //sysnb Getrusage(who int, rusage *Rusage) (err error)
570 //sysnb Getsid(pid int) (sid int, err error)
571 //sysnb Gettimeofday(tv *Timeval) (err error)
572 //sysnb Getuid() (uid int)
573 //sys Issetugid() (tainted bool)
574 //sys Kill(pid int, signum syscall.Signal) (err error)
575 //sys Kqueue() (fd int, err error)
576 //sys Lchown(path string, uid int, gid int) (err error)
577 //sys Link(path string, link string) (err error)
578 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
579 //sys Listen(s int, backlog int) (err error)
580 //sys lstat(path string, stat *stat_freebsd11_t) (err error)
581 //sys Mkdir(path string, mode uint32) (err error)
582 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
583 //sys Mkfifo(path string, mode uint32) (err error)
584 //sys mknod(path string, mode uint32, dev int) (err error)
585 //sys mknodat(fd int, path string, mode uint32, dev int) (err error)
586 //sys mknodat_freebsd12(fd int, path string, mode uint32, dev uint64) (err error)
587 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
588 //sys Open(path string, mode int, perm uint32) (fd int, err error)
589 //sys Openat(fdat int, path string, mode int, perm uint32) (fd int, err error)
590 //sys Pathconf(path string, name int) (val int, err error)
591 //sys Pread(fd int, p []byte, offset int64) (n int, err error)
592 //sys Pwrite(fd int, p []byte, offset int64) (n int, err error)
593 //sys read(fd int, p []byte) (n int, err error)
594 //sys Readlink(path string, buf []byte) (n int, err error)
595 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
596 //sys Rename(from string, to string) (err error)
597 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
598 //sys Revoke(path string) (err error)
599 //sys Rmdir(path string) (err error)
600 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
601 //sys Select(n int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (err error)
602 //sysnb Setegid(egid int) (err error)
603 //sysnb Seteuid(euid int) (err error)
604 //sysnb Setgid(gid int) (err error)
605 //sys Setlogin(name string) (err error)
606 //sysnb Setpgid(pid int, pgid int) (err error)
607 //sys Setpriority(which int, who int, prio int) (err error)
608 //sysnb Setregid(rgid int, egid int) (err error)
609 //sysnb Setreuid(ruid int, euid int) (err error)
610 //sysnb Setresgid(rgid int, egid int, sgid int) (err error)
611 //sysnb Setresuid(ruid int, euid int, suid int) (err error)
612 //sysnb Setrlimit(which int, lim *Rlimit) (err error)
613 //sysnb Setsid() (pid int, err error)
614 //sysnb Settimeofday(tp *Timeval) (err error)
615 //sysnb Setuid(uid int) (err error)
616 //sys stat(path string, stat *stat_freebsd11_t) (err error)
617 //sys statfs(path string, stat *statfs_freebsd11_t) (err error)
618 //sys statfs_freebsd12(path string, stat *Statfs_t) (err error)
619 //sys Symlink(path string, link string) (err error)
620 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
621 //sys Sync() (err error)
622 //sys Truncate(path string, length int64) (err error)
623 //sys Umask(newmask int) (oldmask int)
624 //sys Undelete(path string) (err error)
625 //sys Unlink(path string) (err error)
626 //sys Unlinkat(dirfd int, path string, flags int) (err error)
627 //sys Unmount(path string, flags int) (err error)
628 //sys write(fd int, p []byte) (n int, err error)
629 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
630 //sys munmap(addr uintptr, length uintptr) (err error)
631 //sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
632 //sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
633 //sys accept4(fd int, rsa *RawSockaddrAny, addrlen *_Socklen, flags int) (nfd int, err error)
634 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
669 // Kqueue_from_portset_np
729 // Shared_region_check_np
730 // Shared_region_map_np
731 // __pthread_mutex_destroy
732 // __pthread_mutex_init
733 // __pthread_mutex_lock
734 // __pthread_mutex_trylock
735 // __pthread_mutex_unlock
736 // __pthread_cond_init
737 // __pthread_cond_destroy
738 // __pthread_cond_broadcast
739 // __pthread_cond_signal
741 // __pthread_cond_timedwait
750 // __pthread_cond_wait
755 // __disable_threadsignal
756 // __pthread_markcancel
757 // __pthread_canceled
775 // Bsdthread_terminate
777 // Bsdthread_register
808 // Sigsuspend_nocancel
819 // Aio_suspend_nocancel
820 // __sigwait_nocancel
821 // __semwait_signal_nocancel