src

syscall_netbsd.go (13005B)

---

 // Copyright 2009,2010 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 // NetBSD system calls.
 // This file is compiled as ordinary Go code,
 // but it is also input to mksyscall,
 // which parses the //sys lines and generates system call stubs.
 // Note that sometimes we use a lowercase //sys name and wrap
 // it in our own nicer implementation, either here or in
 // syscall_bsd.go or syscall_unix.go.
 
 package unix
 
 import (
 	"syscall"
 	"unsafe"
 )
 
 // SockaddrDatalink implements the Sockaddr interface for AF_LINK type sockets.
 type SockaddrDatalink struct {
 	Len    uint8
 	Family uint8
 	Index  uint16
 	Type   uint8
 	Nlen   uint8
 	Alen   uint8
 	Slen   uint8
 	Data   [12]int8
 	raw    RawSockaddrDatalink
 }
 
 func anyToSockaddrGOOS(fd int, rsa *RawSockaddrAny) (Sockaddr, error) {
 	return nil, EAFNOSUPPORT
 }
 
 func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno)
 
 func sysctlNodes(mib []_C_int) (nodes []Sysctlnode, err error) {
 	var olen uintptr
 
 	// Get a list of all sysctl nodes below the given MIB by performing
 	// a sysctl for the given MIB with CTL_QUERY appended.
 	mib = append(mib, CTL_QUERY)
 	qnode := Sysctlnode{Flags: SYSCTL_VERS_1}
 	qp := (*byte)(unsafe.Pointer(&qnode))
 	sz := unsafe.Sizeof(qnode)
 	if err = sysctl(mib, nil, &olen, qp, sz); err != nil {
 		return nil, err
 	}
 
 	// Now that we know the size, get the actual nodes.
 	nodes = make([]Sysctlnode, olen/sz)
 	np := (*byte)(unsafe.Pointer(&nodes[0]))
 	if err = sysctl(mib, np, &olen, qp, sz); err != nil {
 		return nil, err
 	}
 
 	return nodes, nil
 }
 
 func nametomib(name string) (mib []_C_int, err error) {
 	// Split name into components.
 	var parts []string
 	last := 0
 	for i := 0; i < len(name); i++ {
 		if name[i] == '.' {
 			parts = append(parts, name[last:i])
 			last = i + 1
 		}
 	}
 	parts = append(parts, name[last:])
 
 	// Discover the nodes and construct the MIB OID.
 	for partno, part := range parts {
 		nodes, err := sysctlNodes(mib)
 		if err != nil {
 			return nil, err
 		}
 		for _, node := range nodes {
 			n := make([]byte, 0)
 			for i := range node.Name {
 				if node.Name[i] != 0 {
 					n = append(n, byte(node.Name[i]))
 				}
 			}
 			if string(n) == part {
 				mib = append(mib, _C_int(node.Num))
 				break
 			}
 		}
 		if len(mib) != partno+1 {
 			return nil, EINVAL
 		}
 	}
 
 	return mib, nil
 }
 
 func direntIno(buf []byte) (uint64, bool) {
 	return readInt(buf, unsafe.Offsetof(Dirent{}.Fileno), unsafe.Sizeof(Dirent{}.Fileno))
 }
 
 func direntReclen(buf []byte) (uint64, bool) {
 	return readInt(buf, unsafe.Offsetof(Dirent{}.Reclen), unsafe.Sizeof(Dirent{}.Reclen))
 }
 
 func direntNamlen(buf []byte) (uint64, bool) {
 	return readInt(buf, unsafe.Offsetof(Dirent{}.Namlen), unsafe.Sizeof(Dirent{}.Namlen))
 }
 
 func SysctlUvmexp(name string) (*Uvmexp, error) {
 	mib, err := sysctlmib(name)
 	if err != nil {
 		return nil, err
 	}
 
 	n := uintptr(SizeofUvmexp)
 	var u Uvmexp
 	if err := sysctl(mib, (*byte)(unsafe.Pointer(&u)), &n, nil, 0); err != nil {
 		return nil, err
 	}
 	return &u, nil
 }
 
 func Pipe(p []int) (err error) {
 	return Pipe2(p, 0)
 }
 
 //sysnb	pipe2(p *[2]_C_int, flags int) (err error)
 
 func Pipe2(p []int, flags int) error {
 	if len(p) != 2 {
 		return EINVAL
 	}
 	var pp [2]_C_int
 	err := pipe2(&pp, flags)
 	if err == nil {
 		p[0] = int(pp[0])
 		p[1] = int(pp[1])
 	}
 	return err
 }
 
 //sys	Getdents(fd int, buf []byte) (n int, err error)
 
 func Getdirentries(fd int, buf []byte, basep *uintptr) (n int, err error) {
 	n, err = Getdents(fd, buf)
 	if err != nil || basep == nil {
 		return
 	}
 
 	var off int64
 	off, err = Seek(fd, 0, 1 /* SEEK_CUR */)
 	if err != nil {
 		*basep = ^uintptr(0)
 		return
 	}
 	*basep = uintptr(off)
 	if unsafe.Sizeof(*basep) == 8 {
 		return
 	}
 	if off>>32 != 0 {
 		// We can't stuff the offset back into a uintptr, so any
 		// future calls would be suspect. Generate an error.
 		// EIO is allowed by getdirentries.
 		err = EIO
 	}
 	return
 }
 
 //sys	Getcwd(buf []byte) (n int, err error) = SYS___GETCWD
 
 // TODO
 func sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
 	return -1, ENOSYS
 }
 
 //sys	ioctl(fd int, req uint, arg uintptr) (err error)
 //sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL
 
 //sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL
 
 func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
 	var value Ptmget
 	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
 	return &value, err
 }
 
 func Uname(uname *Utsname) error {
 	mib := []_C_int{CTL_KERN, KERN_OSTYPE}
 	n := unsafe.Sizeof(uname.Sysname)
 	if err := sysctl(mib, &uname.Sysname[0], &n, nil, 0); err != nil {
 		return err
 	}
 
 	mib = []_C_int{CTL_KERN, KERN_HOSTNAME}
 	n = unsafe.Sizeof(uname.Nodename)
 	if err := sysctl(mib, &uname.Nodename[0], &n, nil, 0); err != nil {
 		return err
 	}
 
 	mib = []_C_int{CTL_KERN, KERN_OSRELEASE}
 	n = unsafe.Sizeof(uname.Release)
 	if err := sysctl(mib, &uname.Release[0], &n, nil, 0); err != nil {
 		return err
 	}
 
 	mib = []_C_int{CTL_KERN, KERN_VERSION}
 	n = unsafe.Sizeof(uname.Version)
 	if err := sysctl(mib, &uname.Version[0], &n, nil, 0); err != nil {
 		return err
 	}
 
 	// The version might have newlines or tabs in it, convert them to
 	// spaces.
 	for i, b := range uname.Version {
 		if b == '\n' || b == '\t' {
 			if i == len(uname.Version)-1 {
 				uname.Version[i] = 0
 			} else {
 				uname.Version[i] = ' '
 			}
 		}
 	}
 
 	mib = []_C_int{CTL_HW, HW_MACHINE}
 	n = unsafe.Sizeof(uname.Machine)
 	if err := sysctl(mib, &uname.Machine[0], &n, nil, 0); err != nil {
 		return err
 	}
 
 	return nil
 }
 
 func Sendfile(outfd int, infd int, offset *int64, count int) (written int, err error) {
 	if raceenabled {
 		raceReleaseMerge(unsafe.Pointer(&ioSync))
 	}
 	return sendfile(outfd, infd, offset, count)
 }
 
 func Fstatvfs(fd int, buf *Statvfs_t) (err error) {
 	return Fstatvfs1(fd, buf, ST_WAIT)
 }
 
 func Statvfs(path string, buf *Statvfs_t) (err error) {
 	return Statvfs1(path, buf, ST_WAIT)
 }
 
 func Getvfsstat(buf []Statvfs_t, flags int) (n int, err error) {
 	var (
 		_p0     unsafe.Pointer
 		bufsize uintptr
 	)
 	if len(buf) > 0 {
 		_p0 = unsafe.Pointer(&buf[0])
 		bufsize = unsafe.Sizeof(Statvfs_t{}) * uintptr(len(buf))
 	}
 	r0, _, e1 := Syscall(SYS_GETVFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
 	n = int(r0)
 	if e1 != 0 {
 		err = e1
 	}
 	return
 }
 
 /*
  * Exposed directly
  */
 //sys	Access(path string, mode uint32) (err error)
 //sys	Adjtime(delta *Timeval, olddelta *Timeval) (err error)
 //sys	Chdir(path string) (err error)
 //sys	Chflags(path string, flags int) (err error)
 //sys	Chmod(path string, mode uint32) (err error)
 //sys	Chown(path string, uid int, gid int) (err error)
 //sys	Chroot(path string) (err error)
 //sys	ClockGettime(clockid int32, time *Timespec) (err error)
 //sys	Close(fd int) (err error)
 //sys	Dup(fd int) (nfd int, err error)
 //sys	Dup2(from int, to int) (err error)
 //sys	Dup3(from int, to int, flags int) (err error)
 //sys	Exit(code int)
 //sys	ExtattrGetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrSetFd(fd int, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrDeleteFd(fd int, attrnamespace int, attrname string) (err error)
 //sys	ExtattrListFd(fd int, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrGetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrSetFile(file string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrDeleteFile(file string, attrnamespace int, attrname string) (err error)
 //sys	ExtattrListFile(file string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrGetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrSetLink(link string, attrnamespace int, attrname string, data uintptr, nbytes int) (ret int, err error)
 //sys	ExtattrDeleteLink(link string, attrnamespace int, attrname string) (err error)
 //sys	ExtattrListLink(link string, attrnamespace int, data uintptr, nbytes int) (ret int, err error)
 //sys	Faccessat(dirfd int, path string, mode uint32, flags int) (err error)
 //sys	Fadvise(fd int, offset int64, length int64, advice int) (err error) = SYS_POSIX_FADVISE
 //sys	Fchdir(fd int) (err error)
 //sys	Fchflags(fd int, flags int) (err error)
 //sys	Fchmod(fd int, mode uint32) (err error)
 //sys	Fchmodat(dirfd int, path string, mode uint32, flags int) (err error)
 //sys	Fchown(fd int, uid int, gid int) (err error)
 //sys	Fchownat(dirfd int, path string, uid int, gid int, flags int) (err error)
 //sys	Flock(fd int, how int) (err error)
 //sys	Fpathconf(fd int, name int) (val int, err error)
 //sys	Fstat(fd int, stat *Stat_t) (err error)
 //sys	Fstatat(fd int, path string, stat *Stat_t, flags int) (err error)
 //sys	Fstatvfs1(fd int, buf *Statvfs_t, flags int) (err error) = SYS_FSTATVFS1
 //sys	Fsync(fd int) (err error)
 //sys	Ftruncate(fd int, length int64) (err error)
 //sysnb	Getegid() (egid int)
 //sysnb	Geteuid() (uid int)
 //sysnb	Getgid() (gid int)
 //sysnb	Getpgid(pid int) (pgid int, err error)
 //sysnb	Getpgrp() (pgrp int)
 //sysnb	Getpid() (pid int)
 //sysnb	Getppid() (ppid int)
 //sys	Getpriority(which int, who int) (prio int, err error)
 //sysnb	Getrlimit(which int, lim *Rlimit) (err error)
 //sysnb	Getrusage(who int, rusage *Rusage) (err error)
 //sysnb	Getsid(pid int) (sid int, err error)
 //sysnb	Gettimeofday(tv *Timeval) (err error)
 //sysnb	Getuid() (uid int)
 //sys	Issetugid() (tainted bool)
 //sys	Kill(pid int, signum syscall.Signal) (err error)
 //sys	Kqueue() (fd int, err error)
 //sys	Lchown(path string, uid int, gid int) (err error)
 //sys	Link(path string, link string) (err error)
 //sys	Linkat(pathfd int, path string, linkfd int, link string, flags int) (err error)
 //sys	Listen(s int, backlog int) (err error)
 //sys	Lstat(path string, stat *Stat_t) (err error)
 //sys	Mkdir(path string, mode uint32) (err error)
 //sys	Mkdirat(dirfd int, path string, mode uint32) (err error)
 //sys	Mkfifo(path string, mode uint32) (err error)
 //sys	Mkfifoat(dirfd int, path string, mode uint32) (err error)
 //sys	Mknod(path string, mode uint32, dev int) (err error)
 //sys	Mknodat(dirfd int, path string, mode uint32, dev int) (err error)
 //sys	Nanosleep(time *Timespec, leftover *Timespec) (err error)
 //sys	Open(path string, mode int, perm uint32) (fd int, err error)
 //sys	Openat(dirfd int, path string, mode int, perm uint32) (fd int, err error)
 //sys	Pathconf(path string, name int) (val int, err error)
 //sys	pread(fd int, p []byte, offset int64) (n int, err error)
 //sys	pwrite(fd int, p []byte, offset int64) (n int, err error)
 //sys	read(fd int, p []byte) (n int, err error)
 //sys	Readlink(path string, buf []byte) (n int, err error)
 //sys	Readlinkat(dirfd int, path string, buf []byte) (n int, err error)
 //sys	Rename(from string, to string) (err error)
 //sys	Renameat(fromfd int, from string, tofd int, to string) (err error)
 //sys	Revoke(path string) (err error)
 //sys	Rmdir(path string) (err error)
 //sys	Seek(fd int, offset int64, whence int) (newoffset int64, err error) = SYS_LSEEK
 //sys	Select(nfd int, r *FdSet, w *FdSet, e *FdSet, timeout *Timeval) (n int, err error)
 //sysnb	Setegid(egid int) (err error)
 //sysnb	Seteuid(euid int) (err error)
 //sysnb	Setgid(gid int) (err error)
 //sysnb	Setpgid(pid int, pgid int) (err error)
 //sys	Setpriority(which int, who int, prio int) (err error)
 //sysnb	Setregid(rgid int, egid int) (err error)
 //sysnb	Setreuid(ruid int, euid int) (err error)
 //sysnb	Setsid() (pid int, err error)
 //sysnb	Settimeofday(tp *Timeval) (err error)
 //sysnb	Setuid(uid int) (err error)
 //sys	Stat(path string, stat *Stat_t) (err error)
 //sys	Statvfs1(path string, buf *Statvfs_t, flags int) (err error) = SYS_STATVFS1
 //sys	Symlink(path string, link string) (err error)
 //sys	Symlinkat(oldpath string, newdirfd int, newpath string) (err error)
 //sys	Sync() (err error)
 //sys	Truncate(path string, length int64) (err error)
 //sys	Umask(newmask int) (oldmask int)
 //sys	Unlink(path string) (err error)
 //sys	Unlinkat(dirfd int, path string, flags int) (err error)
 //sys	Unmount(path string, flags int) (err error)
 //sys	write(fd int, p []byte) (n int, err error)
 //sys	mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, err error)
 //sys	munmap(addr uintptr, length uintptr) (err error)
 //sys	utimensat(dirfd int, path string, times *[2]Timespec, flags int) (err error)
 
 const (
 	mremapFixed     = MAP_FIXED
 	mremapDontunmap = 0
 	mremapMaymove   = 0
 )
 
 //sys	mremapNetBSD(oldp uintptr, oldsize uintptr, newp uintptr, newsize uintptr, flags int) (xaddr uintptr, err error) = SYS_MREMAP
 
 func mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (uintptr, error) {
 	return mremapNetBSD(oldaddr, oldlength, newaddr, newlength, flags)
 }