Source file src/cmd/vendor/golang.org/x/sys/unix/unveil_openbsd.go

     1	// Copyright 2018 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	package unix
     6	
     7	import (
     8		"syscall"
     9		"unsafe"
    10	)
    11	
    12	// Unveil implements the unveil syscall.
    13	// For more information see unveil(2).
    14	// Note that the special case of blocking further
    15	// unveil calls is handled by UnveilBlock.
    16	func Unveil(path string, flags string) error {
    17		pathPtr, err := syscall.BytePtrFromString(path)
    18		if err != nil {
    19			return err
    20		}
    21		flagsPtr, err := syscall.BytePtrFromString(flags)
    22		if err != nil {
    23			return err
    24		}
    25		_, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(unsafe.Pointer(pathPtr)), uintptr(unsafe.Pointer(flagsPtr)), 0)
    26		if e != 0 {
    27			return e
    28		}
    29		return nil
    30	}
    31	
    32	// UnveilBlock blocks future unveil calls.
    33	// For more information see unveil(2).
    34	func UnveilBlock() error {
    35		// Both pointers must be nil.
    36		var pathUnsafe, flagsUnsafe unsafe.Pointer
    37		_, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(pathUnsafe), uintptr(flagsUnsafe), 0)
    38		if e != 0 {
    39			return e
    40		}
    41		return nil
    42	}
    43	

View as plain text