/
fork_server_nix.go
54 lines (43 loc) · 1.14 KB
/
fork_server_nix.go
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
52
53
54
// Copyright 2015 Keybase, Inc. All rights reserved. Use of
// this source code is governed by the included BSD license.
// +build darwin dragonfly freebsd linux netbsd openbsd solaris
package client
import (
"fmt"
"os"
"syscall"
"github.com/keybase/client/go/libkb"
keybase1 "github.com/keybase/client/go/protocol/keybase1"
)
func spawnServer(g *libkb.GlobalContext, cl libkb.CommandLine, forkType keybase1.ForkType) (pid int, err error) {
var files []uintptr
var cmd string
var args []string
var devnull *os.File
defer func() {
if err != nil && devnull != nil {
devnull.Close()
}
}()
if devnull, err = os.OpenFile("/dev/null", os.O_RDONLY, 0); err != nil {
return
}
nullfd := devnull.Fd()
files = append(files, nullfd, nullfd, nullfd)
attr := syscall.ProcAttr{
Env: os.Environ(),
Sys: &syscall.SysProcAttr{Setsid: true},
Files: files,
}
cmd, args, err = makeServerCommandLine(g, cl, forkType)
if err != nil {
return
}
pid, err = syscall.ForkExec(cmd, args, &attr)
if err != nil {
err = fmt.Errorf("Error in ForkExec: %s", err)
} else {
g.Log.Info("Forking background server with pid=%d", pid)
}
return
}