github.com/chipaca/snappy@v0.0.0-20210104084008-1f06296fe8ad/osutil/chdir.go (about) 1 // -*- Mode: Go; indent-tabs-mode: t -*- 2 3 /* 4 * Copyright (C) 2014-2015 Canonical Ltd 5 * 6 * This program is free software: you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 3 as 8 * published by the Free Software Foundation. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 * GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program. If not, see <http://www.gnu.org/licenses/>. 17 * 18 */ 19 20 package osutil 21 22 import ( 23 "os" 24 ) 25 26 // ChDir runs runs "f" inside the given directory 27 // Note that this will only work reliable in a single-threaded context. 28 func ChDir(newDir string, f func() error) (err error) { 29 cwd, err := os.Getwd() 30 if err != nil { 31 return err 32 } 33 if err := os.Chdir(newDir); err != nil { 34 return err 35 } 36 defer os.Chdir(cwd) 37 return f() 38 }