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// NetBSD 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 "syscall"
17 "unsafe"
18)
19
20// SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
21type SockaddrDatalink struct {
22 Len uint8
23 Family uint8
24 Index uint16
25 Type uint8
26 Nlen uint8
27 Alen uint8
28 Slen uint8
29 Data [12]int8
30 raw RawSockaddrDatalink
31}
32
33func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
34 return nil, EAFNOSUPPORT
35}
36
37func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
38
39func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
40 var olen uintptr
41
42 // Get a list of all sysctl nodes below the given MIB by performing
43 // a sysctl for the given MIB with CTL_QUERY appended.
44 mib = append(mib, CTL_QUERY)
45 qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
46 qp := (*byte)(unsafe.Pointer(&qnode))
47 sz := unsafe.Sizeof(qnode)
48 if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
49 return nil, err
50 }
51
52 // Now that we know the size, get the actual nodes.
53 nodes = make([]Sysctlnode, olen/sz)
54 np := (*byte)(unsafe.Pointer(&nodes[0]))
55 if err = sysctl(mib, np, &olen, qp, sz); err != nil {
56 return nil, err
57 }
58
59 return nodes, nil
60}
61
62func nametomib(name string) (mib []_C_int, err error) {
63 // Split name into components.
64 var parts []string
65 last := 0
66 for i := 0; i < len(name); i++ {
67 if name[i] == '.' {
68 parts = append(parts, name[last:i])
69 last = i + 1
70 }
71 }
72 parts = append(parts, name[last:])
73
74 // Discover the nodes and construct the MIB OID.
75 for partno, part := range parts {
76 nodes, err := sysctlNodes(mib)
77 if err != nil {
78 return nil, err
79 }
80 for _, node := range nodes {
81 n := make([]byte, 0)
82 for i := range node.Name {
83 if node.Name[i] != 0 {
84 n = append(n, byte(node.Name[i]))
85 }
86 }
87 if string(n) == part {
88 mib = append(mib, _C_int(node.Num))
89 break
90 }
91 }
92 if len(mib) != partno+1 {
93 return nil, EINVAL
94 }
95 }
96
97 return mib, nil
98}
99
100func direntIno(buf []byte) (uint64, bool) {
101 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
102}
103
104func direntReclen(buf []byte) (uint64, bool) {
105 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
106}
107
108func direntNamlen(buf []byte) (uint64, bool) {
109 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
110}
111
112func SysctlUvmexp(name string) (*Uvmexp, error) {
113 mib, err := sysctlmib(name)
114 if err != nil {
115 return nil, err
116 }
117
118 n := uintptr(SizeofUvmexp)
119 var u Uvmexp
120 if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
121 return nil, err
122 }
123 return &u, nil
124}
125
126func Pipe(p []int) (err error) {
127 return Pipe2(p, 0)
128}
129
130//sysnb pipe2(p *[2]_C_int, flags int) (err error)
131
132func Pipe2(p []int, flags int) error {
133 if len(p) != 2 {
134 return EINVAL
135 }
136 var pp [2]_C_int
137 err := pipe2(&pp, flags)
138 if err == nil {
139 p[0] = int(pp[0])
140 p[1] = int(pp[1])
141 }
142 return err
143}
144
145//sys Getdents(fd int, buf []byte) (n int, err error)
146
147func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
148 n, err = Getdents(fd, buf)
149 if err != nil || basep == nil {
150 return
151 }
152
153 var off int64
154 off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
155 if err != nil {
156 *basep = ^uintptr(0)
157 return
158 }
159 *basep = uintptr(off)
160 if unsafe.Sizeof(*basep) == 8 {
161 return
162 }
163 if off>>32 != 0 {
164 // We can't stuff the offset back into a uintptr, so any
165 // future calls would be suspect. Generate an error.
166 // EIO is allowed by getdirentries.
167 err = EIO
168 }
169 return
170}
171
172//sys Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
173
174// TODO
175func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
176 return -1, ENOSYS
177}
178
179//sys ioctl(fd int, req uint, arg uintptr) (err error)
180//sys ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
181
182//sys sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
183
184func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
185 var value Ptmget
186 err := ioctlPtr(fd, req, unsafe.Pointer(&value))
187 return &value, err
188}
189
190func Uname(uname *Utsname) error {
191 mib := []_C_int{CTL_KERN, KERN_OSTYPE}
192 n := unsafe.Sizeof(uname.Sysname)
193 if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
194 return err
195 }
196
197 mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
198 n = unsafe.Sizeof(uname.Nodename)
199 if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
200 return err
201 }
202
203 mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
204 n = unsafe.Sizeof(uname.Release)
205 if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
206 return err
207 }
208
209 mib = []_C_int{CTL_KERN, KERN_VERSION}
210 n = unsafe.Sizeof(uname.Version)
211 if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
212 return err
213 }
214
215 // The version might have newlines or tabs in it, convert them to
216 // spaces.
217 for i, b := range uname.Version {
218 if b == '\n' || b == '\t' {
219 if i == len(uname.Version)-1 {
220 uname.Version[i] = 0
221 } else {
222 uname.Version[i] = ' '
223 }
224 }
225 }
226
227 mib = []_C_int{CTL_HW, HW_MACHINE}
228 n = unsafe.Sizeof(uname.Machine)
229 if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
230 return err
231 }
232
233 return nil
234}
235
236func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
237 if raceenabled {
238 raceReleaseMerge(unsafe.Pointer(&ioSync))
239 }
240 return sendfile(outfd, infd, offset, count)
241}
242
243func Fstatvfs(fd int, buf *Statvfs_t) (err error) {
244 return Fstatvfs1(fd, buf, ST_WAIT)
245}
246
247func Statvfs(path string, buf *Statvfs_t) (err error) {
248 return Statvfs1(path, buf, ST_WAIT)
249}
250
251/*
252 * Exposed directly
253 */
254//sys Access(path string, mode uint32) (err error)
255//sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
256//sys Chdir(path string) (err error)
257//sys Chflags(path string, flags int) (err error)
258//sys Chmod(path string, mode uint32) (err error)
259//sys Chown(path string, uid int, gid int) (err error)
260//sys Chroot(path string) (err error)
261//sys ClockGettime(clockid int32, time *Timespec) (err error)
262//sys Close(fd int) (err error)
263//sys Dup(fd int) (nfd int, err error)
264//sys Dup2(from int, to int) (err error)
265//sys Dup3(from int, to int, flags int) (err error)
266//sys Exit(code int)
267//sys ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
268//sys ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
269//sys ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
270//sys ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
271//sys ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
272//sys ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
273//sys ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
274//sys ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
275//sys ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
276//sys ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
277//sys ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
278//sys ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
279//sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
280//sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
281//sys Fchdir(fd int) (err error)
282//sys Fchflags(fd int, flags int) (err error)
283//sys Fchmod(fd int, mode uint32) (err error)
284//sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
285//sys Fchown(fd int, uid int, gid int) (err error)
286//sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
287//sys Flock(fd int, how int) (err error)
288//sys Fpathconf(fd int, name int) (val int, err error)
289//sys Fstat(fd int, stat *Stat_t) (err error)
290//sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
291//sys Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1
292//sys Fsync(fd int) (err error)
293//sys Ftruncate(fd int, length int64) (err error)
294//sysnb Getegid() (egid int)
295//sysnb Geteuid() (uid int)
296//sysnb Getgid() (gid int)
297//sysnb Getpgid(pid int) (pgid int, err error)
298//sysnb Getpgrp() (pgrp int)
299//sysnb Getpid() (pid int)
300//sysnb Getppid() (ppid int)
301//sys Getpriority(which int, who int) (prio int, err error)
302//sysnb Getrlimit(which int, lim *Rlimit) (err error)
303//sysnb Getrusage(who int, rusage *Rusage) (err error)
304//sysnb Getsid(pid int) (sid int, err error)
305//sysnb Gettimeofday(tv *Timeval) (err error)
306//sysnb Getuid() (uid int)
307//sys Issetugid() (tainted bool)
308//sys Kill(pid int, signum syscall.Signal) (err error)
309//sys Kqueue() (fd int, err error)
310//sys Lchown(path string, uid int, gid int) (err error)
311//sys Link(path string, link string) (err error)
312//sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
313//sys Listen(s int, backlog int) (err error)
314//sys Lstat(path string, stat *Stat_t) (err error)
315//sys Mkdir(path string, mode uint32) (err error)
316//sys Mkdirat(dirfd int, path string, mode uint32) (err error)
317//sys Mkfifo(path string, mode uint32) (err error)
318//sys Mkfifoat(dirfd int, path string, mode uint32) (err error)
319//sys Mknod(path string, mode uint32, dev int) (err error)
320//sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
321//sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
322//sys Open(path string, mode int, perm uint32) (fd int, err error)
323//sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
324//sys Pathconf(path string, name int) (val int, err error)
325//sys pread(fd int, p []byte, offset int64) (n int, err error)
326//sys pwrite(fd int, p []byte, offset int64) (n int, err error)
327//sys read(fd int, p []byte) (n int, err error)
328//sys Readlink(path string, buf []byte) (n int, err error)
329//sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
330//sys Rename(from string, to string) (err error)
331//sys Renameat(fromfd int, from string, tofd int, to string) (err error)
332//sys Revoke(path string) (err error)
333//sys Rmdir(path string) (err error)
334//sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
335//sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
336//sysnb Setegid(egid int) (err error)
337//sysnb Seteuid(euid int) (err error)
338//sysnb Setgid(gid int) (err error)
339//sysnb Setpgid(pid int, pgid int) (err error)
340//sys Setpriority(which int, who int, prio int) (err error)
341//sysnb Setregid(rgid int, egid int) (err error)
342//sysnb Setreuid(ruid int, euid int) (err error)
343//sysnb Setsid() (pid int, err error)
344//sysnb Settimeofday(tp *Timeval) (err error)
345//sysnb Setuid(uid int) (err error)
346//sys Stat(path string, stat *Stat_t) (err error)
347//sys Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1
348//sys Symlink(path string, link string) (err error)
349//sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
350//sys Sync() (err error)
351//sys Truncate(path string, length int64) (err error)
352//sys Umask(newmask int) (oldmask int)
353//sys Unlink(path string) (err error)
354//sys Unlinkat(dirfd int, path string, flags int) (err error)
355//sys Unmount(path string, flags int) (err error)
356//sys write(fd int, p []byte) (n int, err error)
357//sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
358//sys munmap(addr uintptr, length uintptr) (err error)
359//sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
360
361const (
362 mremapFixed = MAP_FIXED
363 mremapDontunmap = 0
364 mremapMaymove = 0
365)
366
367//sys mremapNetBSD(oldp uintptr, oldsize uintptr, newp uintptr, newsize uintptr, flags int) (xaddr uintptr, err error) = SYS_MREMAP
368
369func mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (uintptr, error) {
370 return mremapNetBSD(oldaddr, oldlength, newaddr, newlength, flags)
371}