blob: 72232e2f5874f1f4a33962b831942e8c55fe5b35 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
//go:build linux || darwin || windows || wasip1
package runtime
// Update the C environment if cgo is loaded.
// Called from Go 1.20 and above.
//
//go:linkname syscallSetenv syscall.runtimeSetenv
func syscallSetenv(key, value string) {
keydata := cstring(key)
valdata := cstring(value)
setenv(&keydata[0], &valdata[0])
if key == "GODEBUG" && godebugUpdate != nil {
// Starting with Go 1.20, we need to call a callback (set by
// internal/godebug) to notify the GODEBUG environment variable has
// changed. This is necessary to get archive/zip to pass tests.
godebugUpdate(key, value)
}
}
// Update the C environment if cgo is loaded.
// Called from Go 1.20 and above.
//
//go:linkname syscallUnsetenv syscall.runtimeUnsetenv
func syscallUnsetenv(key string) {
keydata := cstring(key)
unsetenv(&keydata[0])
}
// Compatibility with Go 1.19 and below.
//
//go:linkname syscall_setenv_c syscall.setenv_c
func syscall_setenv_c(key string, val string) {
syscallSetenv(key, val)
}
// Compatibility with Go 1.19 and below.
//
//go:linkname syscall_unsetenv_c syscall.unsetenv_c
func syscall_unsetenv_c(key string) {
syscallUnsetenv(key)
}
// cstring converts a Go string to a C string.
// borrowed from syscall
func cstring(s string) []byte {
data := make([]byte, len(s)+1)
copy(data, s)
// final byte should be zero from the initial allocation
return data
}
|
