sftpgo-mirror/internal/sftpd/cmd_unix.go
Nicola Murino d8341509e7
micro optimization for external process wrapping
Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
2024-04-16 18:34:40 +02:00

38 lines
1.1 KiB
Go

// Copyright (C) 2019 Nicola Murino
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, version 3.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
//go:build !windows
// +build !windows
package sftpd
import (
"os"
"os/exec"
"syscall"
)
var (
processUID = os.Geteuid()
processGID = os.Getegid()
)
func wrapCmd(cmd *exec.Cmd, uid, gid int) *exec.Cmd {
isCurrentUser := processUID == uid && processGID == gid
if (uid > 0 || gid > 0) && !isCurrentUser {
cmd.SysProcAttr = &syscall.SysProcAttr{}
cmd.SysProcAttr.Credential = &syscall.Credential{Uid: uint32(uid), Gid: uint32(gid)}
}
return cmd
}