blob: e6cd26f8512ba6612e8d521bd9c45fa094a23677 (
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
|
package container
import (
"encoding/gob"
"errors"
"os"
"strconv"
"syscall"
)
var (
ErrReceiveEnv = errors.New("environment variable not set")
)
// Receive retrieves setup fd from the environment and receives params.
func Receive(key string, e any, fdp *uintptr) (func() error, error) {
var setup *os.File
if s, ok := os.LookupEnv(key); !ok {
return nil, ErrReceiveEnv
} else {
if fd, err := strconv.Atoi(s); err != nil {
return nil, optionalErrorUnwrap(err)
} else {
setup = os.NewFile(uintptr(fd), "setup")
if setup == nil {
return nil, syscall.EDOM
}
if fdp != nil {
*fdp = setup.Fd()
}
}
}
return setup.Close, gob.NewDecoder(setup).Decode(e)
}
|
