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// Copyright 2012 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 runtime
import "unsafe"
var tracebackbuf [128]byte
func gogetenv(key string) string {
var file [128]byte
if len(key) > len(file)-6 {
return ""
}
copy(file[:], "/env/")
copy(file[5:], key)
fd := open(&file[0], _OREAD, 0)
if fd < 0 {
return ""
}
n := seek(fd, 0, 2)
if n <= 0 {
closefd(fd)
return ""
}
p := make([]byte, n)
r := pread(fd, unsafe.Pointer(&p[0]), int32(n), 0)
closefd(fd)
if r < 0 {
return ""
}
if p[r-1] == 0 {
r--
}
var s string
sp := stringStructOf(&s)
sp.str = unsafe.Pointer(&p[0])
sp.len = int(r)
return s
}
var _cgo_setenv unsafe.Pointer // pointer to C function
var _cgo_unsetenv unsafe.Pointer // pointer to C function
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