syscall_openbsd.go raw
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
13 package unix
14
15 import (
16 "sort"
17 "syscall"
18 "unsafe"
19 )
20
21 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
22 type 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
34 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
35 return nil, EAFNOSUPPORT
36 }
37
38 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
39
40 func 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
50 func direntIno(buf []byte) (uint64, bool) {
51 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
52 }
53
54 func direntReclen(buf []byte) (uint64, bool) {
55 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
56 }
57
58 func direntNamlen(buf []byte) (uint64, bool) {
59 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
60 }
61
62 func 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
79 func Pipe(p []int) (err error) {
80 return Pipe2(p, 0)
81 }
82
83 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
84
85 func 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
100 func 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
127 func 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
135 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
136 return -1, ENOSYS
137 }
138
139 func Getfsstat(buf []Statfs_t, flags int) (n int, err error) {
140 var bufptr *Statfs_t
141 var bufsize uintptr
142 if len(buf) > 0 {
143 bufptr = &buf[0]
144 bufsize = unsafe.Sizeof(Statfs_t{}) * uintptr(len(buf))
145 }
146 return getfsstat(bufptr, bufsize, flags)
147 }
148
149 //sysnb getresuid(ruid *_C_int, euid *_C_int, suid *_C_int)
150 //sysnb getresgid(rgid *_C_int, egid *_C_int, sgid *_C_int)
151
152 func Getresuid() (ruid, euid, suid int) {
153 var r, e, s _C_int
154 getresuid(&r, &e, &s)
155 return int(r), int(e), int(s)
156 }
157
158 func Getresgid() (rgid, egid, sgid int) {
159 var r, e, s _C_int
160 getresgid(&r, &e, &s)
161 return int(r), int(e), int(s)
162 }
163
164 //sys ioctl(fd int, req uint, arg uintptr) (err error)
165 //sys ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
166
167 //sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
168
169 //sys fcntl(fd int, cmd int, arg int) (n int, err error)
170 //sys fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (n int, err error) = SYS_FCNTL
171
172 // FcntlInt performs a fcntl syscall on fd with the provided command and argument.
173 func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
174 return fcntl(int(fd), cmd, arg)
175 }
176
177 // FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
178 func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
179 _, err := fcntlPtr(int(fd), cmd, unsafe.Pointer(lk))
180 return err
181 }
182
183 //sys ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)
184
185 func Ppoll(fds []PollFd, timeout *Timespec, sigmask *Sigset_t) (n int, err error) {
186 if len(fds) == 0 {
187 return ppoll(nil, 0, timeout, sigmask)
188 }
189 return ppoll(&fds[0], len(fds), timeout, sigmask)
190 }
191
192 func Uname(uname *Utsname) error {
193 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
194 n := unsafe.Sizeof(uname.Sysname)
195 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
196 return err
197 }
198
199 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
200 n = unsafe.Sizeof(uname.Nodename)
201 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
202 return err
203 }
204
205 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
206 n = unsafe.Sizeof(uname.Release)
207 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
208 return err
209 }
210
211 mib = []_C_int{CTL_KERN, KERN_VERSION}
212 n = unsafe.Sizeof(uname.Version)
213 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
214 return err
215 }
216
217 // The version might have newlines or tabs in it, convert them to
218 // spaces.
219 for i, b := range uname.Version {
220 if b == '\n' || b == '\t' {
221 if i == len(uname.Version)-1 {
222 uname.Version[i] = 0
223 } else {
224 uname.Version[i] = ' '
225 }
226 }
227 }
228
229 mib = []_C_int{CTL_HW, HW_MACHINE}
230 n = unsafe.Sizeof(uname.Machine)
231 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
232 return err
233 }
234
235 return nil
236 }
237
238 /*
239 * Exposed directly
240 */
241 //sys Access(path string, mode uint32) (err error)
242 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
243 //sys Chdir(path string) (err error)
244 //sys Chflags(path string, flags int) (err error)
245 //sys Chmod(path string, mode uint32) (err error)
246 //sys Chown(path string, uid int, gid int) (err error)
247 //sys Chroot(path string) (err error)
248 //sys ClockGettime(clockid int32, time *Timespec) (err error)
249 //sys Close(fd int) (err error)
250 //sys Dup(fd int) (nfd int, err error)
251 //sys Dup2(from int, to int) (err error)
252 //sys Dup3(from int, to int, flags int) (err error)
253 //sys Exit(code int)
254 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
255 //sys Fchdir(fd int) (err error)
256 //sys Fchflags(fd int, flags int) (err error)
257 //sys Fchmod(fd int, mode uint32) (err error)
258 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
259 //sys Fchown(fd int, uid int, gid int) (err error)
260 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
261 //sys Flock(fd int, how int) (err error)
262 //sys Fpathconf(fd int, name int) (val int, err error)
263 //sys Fstat(fd int, stat *Stat_t) (err error)
264 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
265 //sys Fstatfs(fd int, stat *Statfs_t) (err error)
266 //sys Fsync(fd int) (err error)
267 //sys Ftruncate(fd int, length int64) (err error)
268 //sysnb Getegid() (egid int)
269 //sysnb Geteuid() (uid int)
270 //sysnb Getgid() (gid int)
271 //sysnb Getpgid(pid int) (pgid int, err error)
272 //sysnb Getpgrp() (pgrp int)
273 //sysnb Getpid() (pid int)
274 //sysnb Getppid() (ppid int)
275 //sys Getpriority(which int, who int) (prio int, err error)
276 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
277 //sysnb Getrtable() (rtable int, err error)
278 //sysnb Getrusage(who int, rusage *Rusage) (err error)
279 //sysnb Getsid(pid int) (sid int, err error)
280 //sysnb Gettimeofday(tv *Timeval) (err error)
281 //sysnb Getuid() (uid int)
282 //sys Issetugid() (tainted bool)
283 //sys Kill(pid int, signum syscall.Signal) (err error)
284 //sys Kqueue() (fd int, err error)
285 //sys Lchown(path string, uid int, gid int) (err error)
286 //sys Link(path string, link string) (err error)
287 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
288 //sys Listen(s int, backlog int) (err error)
289 //sys Lstat(path string, stat *Stat_t) (err error)
290 //sys Mkdir(path string, mode uint32) (err error)
291 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
292 //sys Mkfifo(path string, mode uint32) (err error)
293 //sys Mkfifoat(dirfd int, path string, mode uint32) (err error)
294 //sys Mknod(path string, mode uint32, dev int) (err error)
295 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
296 //sys Mount(fsType string, dir string, flags int, data unsafe.Pointer) (err error)
297 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
298 //sys Open(path string, mode int, perm uint32) (fd int, err error)
299 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
300 //sys Pathconf(path string, name int) (val int, err error)
301 //sys pread(fd int, p []byte, offset int64) (n int, err error)
302 //sys pwrite(fd int, p []byte, offset int64) (n int, err error)
303 //sys read(fd int, p []byte) (n int, err error)
304 //sys Readlink(path string, buf []byte) (n int, err error)
305 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
306 //sys Rename(from string, to string) (err error)
307 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
308 //sys Revoke(path string) (err error)
309 //sys Rmdir(path string) (err error)
310 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
311 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
312 //sysnb Setegid(egid int) (err error)
313 //sysnb Seteuid(euid int) (err error)
314 //sysnb Setgid(gid int) (err error)
315 //sys Setlogin(name string) (err error)
316 //sysnb Setpgid(pid int, pgid int) (err error)
317 //sys Setpriority(which int, who int, prio int) (err error)
318 //sysnb Setregid(rgid int, egid int) (err error)
319 //sysnb Setreuid(ruid int, euid int) (err error)
320 //sysnb Setresgid(rgid int, egid int, sgid int) (err error)
321 //sysnb Setresuid(ruid int, euid int, suid int) (err error)
322 //sysnb Setrtable(rtable int) (err error)
323 //sysnb Setsid() (pid int, err error)
324 //sysnb Settimeofday(tp *Timeval) (err error)
325 //sysnb Setuid(uid int) (err error)
326 //sys Stat(path string, stat *Stat_t) (err error)
327 //sys Statfs(path string, stat *Statfs_t) (err error)
328 //sys Symlink(path string, link string) (err error)
329 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
330 //sys Sync() (err error)
331 //sys Truncate(path string, length int64) (err error)
332 //sys Umask(newmask int) (oldmask int)
333 //sys Unlink(path string) (err error)
334 //sys Unlinkat(dirfd int, path string, flags int) (err error)
335 //sys Unmount(path string, flags int) (err error)
336 //sys write(fd int, p []byte) (n int, err error)
337 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
338 //sys munmap(addr uintptr, length uintptr) (err error)
339 //sys getfsstat(stat *Statfs_t, bufsize uintptr, flags int) (n int, err error)
340 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
341 //sys pledge(promises *byte, execpromises *byte) (err error)
342 //sys unveil(path *byte, flags *byte) (err error)
343