syscall_openbsd.go

     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
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