github.com/david-imola/snapd@v0.0.0-20210611180407-2de8ddeece6d/osutil/settime.go (about) 1 // -*- Mode: Go; indent-tabs-mode: t -*- 2 3 /* 4 * Copyright (C) 2021 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 "syscall" 24 "time" 25 ) 26 27 // exposed for different 32-bit vs 64-bit definitions of syscall.Timeval 28 var timeToTimeval func(time.Time) *syscall.Timeval 29 30 // exposed for mocking, since we can't actually call this without being root 31 // on system running tests 32 var syscallSettimeofday = syscall.Settimeofday 33 34 // SetTime sets the time of the system using settimeofday(). This syscall needs 35 // to be performed as root or with CAP_SYS_TIME. 36 func SetTime(t time.Time) error { 37 tv := timeToTimeval(t) 38 39 return syscallSettimeofday(tv) 40 }