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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
|
|
