golang.org/x/sys@v0.20.1-0.20240517151509-673e0f94c16d/unix/syscall_netbsd.go (about)

     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  /*
   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  
   361  const (
   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  
   369  func mremap(oldaddr uintptr, oldlength uintptr, newlength uintptr, flags int, newaddr uintptr) (uintptr, error) {
   370  	return mremapNetBSD(oldaddr, oldlength, newaddr, newlength, flags)
   371  }