mirror of
https://github.com/tailscale/tailscale.git
synced 2024-11-25 19:15:34 +00:00
71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
37 lines
687 B
Go
37 lines
687 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
package pidowner
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"strings"
|
|
|
|
"tailscale.com/util/lineread"
|
|
)
|
|
|
|
func ownerOfPID(pid int) (userID string, err error) {
|
|
file := fmt.Sprintf("/proc/%d/status", pid)
|
|
err = lineread.File(file, func(line []byte) error {
|
|
if len(line) < 4 || string(line[:4]) != "Uid:" {
|
|
return nil
|
|
}
|
|
f := strings.Fields(string(line))
|
|
if len(f) >= 2 {
|
|
userID = f[1] // real userid
|
|
}
|
|
return nil
|
|
})
|
|
if os.IsNotExist(err) {
|
|
return "", ErrProcessNotFound
|
|
}
|
|
if err != nil {
|
|
return
|
|
}
|
|
if userID == "" {
|
|
return "", fmt.Errorf("missing Uid line in %s", file)
|
|
}
|
|
return userID, nil
|
|
}
|