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// SPDX-License-Identifier: BSD-3-Clause
//go:build linux || freebsd || darwin || openbsd
package common
import (
"context"
"errors"
"os/exec"
"strconv"
"strings"
)
func CallLsofWithContext(ctx context.Context, invoke Invoker, pid int32, args ...string) ([]string, error) {
var cmd []string
if pid == 0 { // will get from all processes.
cmd = []string{"-a", "-n", "-P"}
} else {
cmd = []string{"-a", "-n", "-P", "-p", strconv.Itoa(int(pid))}
}
cmd = append(cmd, args...)
out, err := invoke.CommandWithContext(ctx, "lsof", cmd...)
if err != nil {
if errors.Is(err, exec.ErrNotFound) {
return []string{}, err
}
// if no pid found, lsof returns code 1.
if err.Error() == "exit status 1" && len(out) == 0 {
return []string{}, nil
}
}
lines := strings.Split(string(out), "\n")
var ret []string
for _, l := range lines[1:] {
if l == "" {
continue
}
ret = append(ret, l)
}
return ret, nil
}
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