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// Copyright 2009 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.
package syscall
import "unsafe"
var (
Stdin = 0
Stdout = 1
Stderr = 2
)
const ENONE = 0
func GetErrno() int
func SetErrno(int)
func Uname(buf *Utsname) (errno int) {
r := libc_uname(buf)
if r < 0 {
errno = GetErrno()
}
return
}
var mapper = &mmapper{
active: make(map[*byte][]byte),
mmap: mmap,
munmap: munmap,
}
func Mmap(fd int, offset int64, length int, prot int, flags int) (data []byte, errno int) {
return mapper.Mmap(fd, offset, length, prot, flags)
}
func Munmap(b []byte) (errno int) {
return mapper.Munmap(b)
}
func libc_munmap(*byte, Size_t) int __asm__ ("munmap")
func mmap(addr uintptr, length uintptr, prot int, flag int, fd int, pos int64) (ret uintptr, errno int) {
r0 := libc_mmap((*byte)(unsafe.Pointer(addr)), Size_t(length), prot, flag, fd, Offset_t(pos))
ret = uintptr(unsafe.Pointer(r0))
if ret + 1 == 0 {
errno = GetErrno()
}
return
}
func munmap(addr uintptr, length uintptr) (errno int) {
if libc_munmap((*byte)(unsafe.Pointer(addr)), Size_t(length)) < 0 {
errno = GetErrno()
}
return
}
func libc_getrusage(who int, rusage *Rusage) int __asm__ ("getrusage")
func Getrusage(who int, rusage *Rusage) (errno int) {
if libc_getrusage(who, rusage) < 0 {
errno = GetErrno()
}
return
}
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