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// OpenBSD 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 "sort"
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 [24]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 nametomib(name string) (mib []_C_int, err error) {
41 i := sort.Search(len(sysctlMib), func(i int) bool {
42 return sysctlMib[i].ctlname >= name
43 })
44 if i < len(sysctlMib) && sysctlMib[i].ctlname == name {
45 return sysctlMib[i].ctloid, nil
46 }
47 return nil, EINVAL
48}
49
50func direntIno(buf []byte) (uint64, bool) {
51 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
52}
53
54func direntReclen(buf []byte) (uint64, bool) {
55 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
56}
57
58func direntNamlen(buf []byte) (uint64, bool) {
59 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
60}
61
62func SysctlUvmexp(name string) (*Uvmexp, error) {
63 mib, err := sysctlmib(name)
64 if err != nil {
65 return nil, err
66 }
67
68 n := uintptr(SizeofUvmexp)
69 var u Uvmexp
70 if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
71 return nil, err
72 }
73 if n != SizeofUvmexp {
74 return nil, EIO
75 }
76 return &u, nil
77}
78
79func Pipe(p []int) (err error) {
80 return Pipe2(p, 0)
81}
82
83//sysnb pipe2(p *[2]_C_int, flags int) (err error)
84
85func Pipe2(p []int, flags int) error {
86 if len(p) != 2 {
87 return EINVAL
88 }
89 var pp [2]_C_int
90 err := pipe2(&pp, flags)
91 if err == nil {
92 p[0] = int(pp[0])
93 p[1] = int(pp[1])
94 }
95 return err
96}
97
98//sys Getdents(fd int, buf []byte) (n int, err error)
99
100func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
101 n, err = Getdents(fd, buf)
102 if err != nil || basep == nil {
103 return
104 }
105
106 var off int64
107 off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
108 if err != nil {
109 *basep = ^uintptr(0)
110 return
111 }
112 *basep = uintptr(off)
113 if unsafe.Sizeof(*basep) == 8 {
114 return
115 }
116 if off>>32 != 0 {
117 // We can't stuff the offset back into a uintptr, so any
118 // future calls would be suspect. Generate an error.
119 // EIO was allowed by getdirentries.
120 err = EIO
121 }
122 return
123}
124
125//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
126
127func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
128 if raceenabled {
129 raceReleaseMerge(unsafe.Pointer(&ioSync))
130 }
131 return sendfile(outfd, infd, offset, count)
132}
133
134// TODO
135func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
136 return -1, ENOSYS
137}
138
139func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
140 var _p0 unsafe.Pointer
141 var bufsize uintptr
142 if len(buf) > 0 {
143 _p0 = unsafe.Pointer(&buf[0])
144 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
145 }
146 r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
147 n = int(r0)
148 if e1 != 0 {
149 err = e1
150 }
151 return
152}
153
154//sys ioctl(fd int, req uint, arg uintptr) (err error)
155//sys ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
156
157//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
158
159//sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
160
161func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
162 if len(fds) == 0 {
163 return ppoll(nil, 0, timeout, sigmask)
164 }
165 return ppoll(&fds[0], len(fds), timeout, sigmask)
166}
167
168func Uname(uname *Utsname) error {
169 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
170 n := unsafe.Sizeof(uname.Sysname)
171 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
172 return err
173 }
174
175 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
176 n = unsafe.Sizeof(uname.Nodename)
177 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
178 return err
179 }
180
181 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
182 n = unsafe.Sizeof(uname.Release)
183 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
184 return err
185 }
186
187 mib = []_C_int{CTL_KERN, KERN_VERSION}
188 n = unsafe.Sizeof(uname.Version)
189 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
190 return err
191 }
192
193 // The version might have newlines or tabs in it, convert them to
194 // spaces.
195 for i, b := range uname.Version {
196 if b == '\n' || b == '\t' {
197 if i == len(uname.Version)-1 {
198 uname.Version[i] = 0
199 } else {
200 uname.Version[i] = ' '
201 }
202 }
203 }
204
205 mib = []_C_int{CTL_HW, HW_MACHINE}
206 n = unsafe.Sizeof(uname.Machine)
207 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
208 return err
209 }
210
211 return nil
212}
213
214/*
215 * Exposed directly
216 */
217//sys Access(path string, mode uint32) (err error)
218//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
219//sys Chdir(path string) (err error)
220//sys Chflags(path string, flags int) (err error)
221//sys Chmod(path string, mode uint32) (err error)
222//sys Chown(path string, uid int, gid int) (err error)
223//sys Chroot(path string) (err error)
224//sys ClockGettime(clockid int32, time *Timespec) (err error)
225//sys Close(fd int) (err error)
226//sys Dup(fd int) (nfd int, err error)
227//sys Dup2(from int, to int) (err error)
228//sys Dup3(from int, to int, flags int) (err error)
229//sys Exit(code int)
230//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
231//sys Fchdir(fd int) (err error)
232//sys Fchflags(fd int, flags int) (err error)
233//sys Fchmod(fd int, mode uint32) (err error)
234//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
235//sys Fchown(fd int, uid int, gid int) (err error)
236//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
237//sys Flock(fd int, how int) (err error)
238//sys Fpathconf(fd int, name int) (val int, err error)
239//sys Fstat(fd int, stat *Stat_t) (err error)
240//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
241//sys Fstatfs(fd int, stat *Statfs_t) (err error)
242//sys Fsync(fd int) (err error)
243//sys Ftruncate(fd int, length int64) (err error)
244//sysnb Getegid() (egid int)
245//sysnb Geteuid() (uid int)
246//sysnb Getgid() (gid int)
247//sysnb Getpgid(pid int) (pgid int, err error)
248//sysnb Getpgrp() (pgrp int)
249//sysnb Getpid() (pid int)
250//sysnb Getppid() (ppid int)
251//sys Getpriority(which int, who int) (prio int, err error)
252//sysnb Getrlimit(which int, lim *Rlimit) (err error)
253//sysnb Getrtable() (rtable int, err error)
254//sysnb Getrusage(who int, rusage *Rusage) (err error)
255//sysnb Getsid(pid int) (sid int, err error)
256//sysnb Gettimeofday(tv *Timeval) (err error)
257//sysnb Getuid() (uid int)
258//sys Issetugid() (tainted bool)
259//sys Kill(pid int, signum syscall.Signal) (err error)
260//sys Kqueue() (fd int, err error)
261//sys Lchown(path string, uid int, gid int) (err error)
262//sys Link(path string, link string) (err error)
263//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
264//sys Listen(s int, backlog int) (err error)
265//sys Lstat(path string, stat *Stat_t) (err error)
266//sys Mkdir(path string, mode uint32) (err error)
267//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
268//sys Mkfifo(path string, mode uint32) (err error)
269//sys Mkfifoat(dirfd int, path string, mode uint32) (err error)
270//sys Mknod(path string, mode uint32, dev int) (err error)
271//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
272//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
273//sys Open(path string, mode int, perm uint32) (fd int, err error)
274//sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
275//sys Pathconf(path string, name int) (val int, err error)
276//sys pread(fd int, p []byte, offset int64) (n int, err error)
277//sys pwrite(fd int, p []byte, offset int64) (n int, err error)
278//sys read(fd int, p []byte) (n int, err error)
279//sys Readlink(path string, buf []byte) (n int, err error)
280//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
281//sys Rename(from string, to string) (err error)
282//sys Renameat(fromfd int, from string, tofd int, to string) (err error)
283//sys Revoke(path string) (err error)
284//sys Rmdir(path string) (err error)
285//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
286//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
287//sysnb Setegid(egid int) (err error)
288//sysnb Seteuid(euid int) (err error)
289//sysnb Setgid(gid int) (err error)
290//sys Setlogin(name string) (err error)
291//sysnb Setpgid(pid int, pgid int) (err error)
292//sys Setpriority(which int, who int, prio int) (err error)
293//sysnb Setregid(rgid int, egid int) (err error)
294//sysnb Setreuid(ruid int, euid int) (err error)
295//sysnb Setresgid(rgid int, egid int, sgid int) (err error)
296//sysnb Setresuid(ruid int, euid int, suid int) (err error)
297//sysnb Setrtable(rtable int) (err error)
298//sysnb Setsid() (pid int, err error)
299//sysnb Settimeofday(tp *Timeval) (err error)
300//sysnb Setuid(uid int) (err error)
301//sys Stat(path string, stat *Stat_t) (err error)
302//sys Statfs(path string, stat *Statfs_t) (err error)
303//sys Symlink(path string, link string) (err error)
304//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
305//sys Sync() (err error)
306//sys Truncate(path string, length int64) (err error)
307//sys Umask(newmask int) (oldmask int)
308//sys Unlink(path string) (err error)
309//sys Unlinkat(dirfd int, path string, flags int) (err error)
310//sys Unmount(path string, flags int) (err error)
311//sys write(fd int, p []byte) (n int, err error)
312//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
313//sys munmap(addr uintptr, length uintptr) (err error)
314//sys readlen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_READ
315//sys writelen(fd int, buf *byte, nbuf int) (n int, err error) = SYS_WRITE
316//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
317
318/*
319 * Unimplemented
320 */
321// __getcwd
322// __semctl
323// __syscall
324// __sysctl
325// adjfreq
326// break
327// clock_getres
328// clock_gettime
329// clock_settime
330// closefrom
331// execve
332// fhopen
333// fhstat
334// fhstatfs
335// fork
336// futimens
337// getfh
338// getgid
339// getitimer
340// getlogin
341// getresgid
342// getresuid
343// getthrid
344// ktrace
345// lfs_bmapv
346// lfs_markv
347// lfs_segclean
348// lfs_segwait
349// mincore
350// minherit
351// mount
352// mquery
353// msgctl
354// msgget
355// msgrcv
356// msgsnd
357// nfssvc
358// nnpfspioctl
359// preadv
360// profil
361// pwritev
362// quotactl
363// readv
364// reboot
365// renameat
366// rfork
367// sched_yield
368// semget
369// semop
370// setgroups
371// setitimer
372// setsockopt
373// shmat
374// shmctl
375// shmdt
376// shmget
377// sigaction
378// sigaltstack
379// sigpending
380// sigprocmask
381// sigreturn
382// sigsuspend
383// sysarch
384// syscall
385// threxit
386// thrsigdivert
387// thrsleep
388// thrwakeup
389// vfork
390// writev