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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>
36 lines
861 B
Go
36 lines
861 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package pidowner
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import (
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"fmt"
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"syscall"
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"golang.org/x/sys/windows"
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)
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func ownerOfPID(pid int) (userID string, err error) {
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procHnd, err := windows.OpenProcess(windows.PROCESS_QUERY_INFORMATION, false, uint32(pid))
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if err == syscall.Errno(0x57) { // invalid parameter, for PIDs that don't exist
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return "", ErrProcessNotFound
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}
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if err != nil {
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return "", fmt.Errorf("OpenProcess: %T %#v", err, err)
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}
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defer windows.CloseHandle(procHnd)
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var tok windows.Token
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if err := windows.OpenProcessToken(procHnd, windows.TOKEN_QUERY, &tok); err != nil {
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return "", fmt.Errorf("OpenProcessToken: %w", err)
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}
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tokUser, err := tok.GetTokenUser()
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if err != nil {
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return "", fmt.Errorf("GetTokenUser: %w", err)
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}
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sid := tokUser.User.Sid
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return sid.String(), nil
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}
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