syscall_netbsd.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 // 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
13 package unix
14
15 import (
16 "syscall"
17 "unsafe"
18 )
19
20 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
21 type 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
33 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
34 return nil, EAFNOSUPPORT
35 }
36
37 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
38
39 func 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
62 func 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
100 func direntIno(buf []byte) (uint64, bool) {
101 return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
102 }
103
104 func direntReclen(buf []byte) (uint64, bool) {
105 return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
106 }
107
108 func direntNamlen(buf []byte) (uint64, bool) {
109 return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
110 }
111
112 func 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
126 func Pipe(p []int) (err error) {
127 return Pipe2(p, 0)
128 }
129
130 //sysnb pipe2(p *[2]_C_int, flags int) (err error)
131
132 func 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
147 func 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
175 func 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
184 func 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
190 func 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
236 func 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
243 func Fstatvfs(fd int, buf *Statvfs_t) (err error) {
244 return Fstatvfs1(fd, buf, ST_WAIT)
245 }
246
247 func Statvfs(path string, buf *Statvfs_t) (err error) {
248 return Statvfs1(path, buf, ST_WAIT)
249 }
250
251 func Getvfsstat(buf []Statvfs_t, flags int) (n int, err error) {
252 var (
253 _p0 unsafe.Pointer
254 bufsize uintptr
255 )
256 if len(buf) > 0 {
257 _p0 = unsafe.Pointer(&buf[0])
258 bufsize = unsafe.Sizeof(Statvfs_t{}) * uintptr(len(buf))
259 }
260 r0, _, e1 := Syscall(SYS_GETVFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
261 n = int(r0)
262 if e1 != 0 {
263 err = e1
264 }
265 return
266 }
267
268 /*
269 * Exposed directly
270 */
271 //sys Access(path string, mode uint32) (err error)
272 //sys Adjtime(delta *Timeval, olddelta *Timeval) (err error)
273 //sys Chdir(path string) (err error)
274 //sys Chflags(path string, flags int) (err error)
275 //sys Chmod(path string, mode uint32) (err error)
276 //sys Chown(path string, uid int, gid int) (err error)
277 //sys Chroot(path string) (err error)
278 //sys ClockGettime(clockid int32, time *Timespec) (err error)
279 //sys Close(fd int) (err error)
280 //sys Dup(fd int) (nfd int, err error)
281 //sys Dup2(from int, to int) (err error)
282 //sys Dup3(from int, to int, flags int) (err error)
283 //sys Exit(code int)
284 //sys ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
285 //sys ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
286 //sys ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
287 //sys ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
288 //sys ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
289 //sys ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
290 //sys ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
291 //sys ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
292 //sys ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
293 //sys ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
294 //sys ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
295 //sys ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
296 //sys Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
297 //sys Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
298 //sys Fchdir(fd int) (err error)
299 //sys Fchflags(fd int, flags int) (err error)
300 //sys Fchmod(fd int, mode uint32) (err error)
301 //sys Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
302 //sys Fchown(fd int, uid int, gid int) (err error)
303 //sys Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
304 //sys Flock(fd int, how int) (err error)
305 //sys Fpathconf(fd int, name int) (val int, err error)
306 //sys Fstat(fd int, stat *Stat_t) (err error)
307 //sys Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
308 //sys Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1
309 //sys Fsync(fd int) (err error)
310 //sys Ftruncate(fd int, length int64) (err error)
311 //sysnb Getegid() (egid int)
312 //sysnb Geteuid() (uid int)
313 //sysnb Getgid() (gid int)
314 //sysnb Getpgid(pid int) (pgid int, err error)
315 //sysnb Getpgrp() (pgrp int)
316 //sysnb Getpid() (pid int)
317 //sysnb Getppid() (ppid int)
318 //sys Getpriority(which int, who int) (prio int, err error)
319 //sysnb Getrlimit(which int, lim *Rlimit) (err error)
320 //sysnb Getrusage(who int, rusage *Rusage) (err error)
321 //sysnb Getsid(pid int) (sid int, err error)
322 //sysnb Gettimeofday(tv *Timeval) (err error)
323 //sysnb Getuid() (uid int)
324 //sys Issetugid() (tainted bool)
325 //sys Kill(pid int, signum syscall.Signal) (err error)
326 //sys Kqueue() (fd int, err error)
327 //sys Lchown(path string, uid int, gid int) (err error)
328 //sys Link(path string, link string) (err error)
329 //sys Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
330 //sys Listen(s int, backlog int) (err error)
331 //sys Lstat(path string, stat *Stat_t) (err error)
332 //sys Mkdir(path string, mode uint32) (err error)
333 //sys Mkdirat(dirfd int, path string, mode uint32) (err error)
334 //sys Mkfifo(path string, mode uint32) (err error)
335 //sys Mkfifoat(dirfd int, path string, mode uint32) (err error)
336 //sys Mknod(path string, mode uint32, dev int) (err error)
337 //sys Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
338 //sys Nanosleep(time *Timespec, leftover *Timespec) (err error)
339 //sys Open(path string, mode int, perm uint32) (fd int, err error)
340 //sys Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
341 //sys Pathconf(path string, name int) (val int, err error)
342 //sys pread(fd int, p []byte, offset int64) (n int, err error)
343 //sys pwrite(fd int, p []byte, offset int64) (n int, err error)
344 //sys read(fd int, p []byte) (n int, err error)
345 //sys Readlink(path string, buf []byte) (n int, err error)
346 //sys Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
347 //sys Rename(from string, to string) (err error)
348 //sys Renameat(fromfd int, from string, tofd int, to string) (err error)
349 //sys Revoke(path string) (err error)
350 //sys Rmdir(path string) (err error)
351 //sys Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
352 //sys Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
353 //sysnb Setegid(egid int) (err error)
354 //sysnb Seteuid(euid int) (err error)
355 //sysnb Setgid(gid int) (err error)
356 //sysnb Setpgid(pid int, pgid int) (err error)
357 //sys Setpriority(which int, who int, prio int) (err error)
358 //sysnb Setregid(rgid int, egid int) (err error)
359 //sysnb Setreuid(ruid int, euid int) (err error)
360 //sysnb Setsid() (pid int, err error)
361 //sysnb Settimeofday(tp *Timeval) (err error)
362 //sysnb Setuid(uid int) (err error)
363 //sys Stat(path string, stat *Stat_t) (err error)
364 //sys Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1
365 //sys Symlink(path string, link string) (err error)
366 //sys Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
367 //sys Sync() (err error)
368 //sys Truncate(path string, length int64) (err error)
369 //sys Umask(newmask int) (oldmask int)
370 //sys Unlink(path string) (err error)
371 //sys Unlinkat(dirfd int, path string, flags int) (err error)
372 //sys Unmount(path string, flags int) (err error)
373 //sys write(fd int, p []byte) (n int, err error)
374 //sys mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
375 //sys munmap(addr uintptr, length uintptr) (err error)
376 //sys utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
377
378 const (
379 mremapFixed = MAP_FIXED
380 mremapDontunmap = 0
381 mremapMaymove = 0
382 )
383
384 //sys mremapNetBSD(oldp uintptr, oldsize uintptr, newp uintptr, newsize uintptr, flags int) (xaddr uintptr, err error) = SYS_MREMAP
385
386 func mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (uintptr, error) {
387 return mremapNetBSD(oldaddr, oldlength, newaddr, newlength, flags)
388 }
389