Serge Bazanski | cc25bdf | 2018-10-25 14:02:58 +0200 | [diff] [blame] | 1 | // +build linux freebsd darwin openbsd |
| 2 | |
| 3 | package common |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "os/exec" |
| 8 | "strconv" |
| 9 | "strings" |
| 10 | ) |
| 11 | |
| 12 | func CallLsofWithContext(ctx context.Context, invoke Invoker, pid int32, args ...string) ([]string, error) { |
| 13 | var cmd []string |
| 14 | if pid == 0 { // will get from all processes. |
| 15 | cmd = []string{"-a", "-n", "-P"} |
| 16 | } else { |
| 17 | cmd = []string{"-a", "-n", "-P", "-p", strconv.Itoa(int(pid))} |
| 18 | } |
| 19 | cmd = append(cmd, args...) |
| 20 | lsof, err := exec.LookPath("lsof") |
| 21 | if err != nil { |
| 22 | return []string{}, err |
| 23 | } |
| 24 | out, err := invoke.CommandWithContext(ctx, lsof, cmd...) |
| 25 | if err != nil { |
| 26 | // if no pid found, lsof returnes code 1. |
| 27 | if err.Error() == "exit status 1" && len(out) == 0 { |
| 28 | return []string{}, nil |
| 29 | } |
| 30 | } |
| 31 | lines := strings.Split(string(out), "\n") |
| 32 | |
| 33 | var ret []string |
| 34 | for _, l := range lines[1:] { |
| 35 | if len(l) == 0 { |
| 36 | continue |
| 37 | } |
| 38 | ret = append(ret, l) |
| 39 | } |
| 40 | return ret, nil |
| 41 | } |
| 42 | |
| 43 | func CallPgrepWithContext(ctx context.Context, invoke Invoker, pid int32) ([]int32, error) { |
| 44 | var cmd []string |
| 45 | cmd = []string{"-P", strconv.Itoa(int(pid))} |
| 46 | pgrep, err := exec.LookPath("pgrep") |
| 47 | if err != nil { |
| 48 | return []int32{}, err |
| 49 | } |
| 50 | out, err := invoke.CommandWithContext(ctx, pgrep, cmd...) |
| 51 | if err != nil { |
| 52 | return []int32{}, err |
| 53 | } |
| 54 | lines := strings.Split(string(out), "\n") |
| 55 | ret := make([]int32, 0, len(lines)) |
| 56 | for _, l := range lines { |
| 57 | if len(l) == 0 { |
| 58 | continue |
| 59 | } |
| 60 | i, err := strconv.Atoi(l) |
| 61 | if err != nil { |
| 62 | continue |
| 63 | } |
| 64 | ret = append(ret, int32(i)) |
| 65 | } |
| 66 | return ret, nil |
| 67 | } |