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 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
152func 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
158func 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.
173func 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.
178func 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
185func 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
192func 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)