pacman/scripts/libmakepkg/util/lock.sh.in

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#!/bin/bash
#
# lock.sh - functions to handle pacman locking
#
# Copyright (c) 2024 Pacman Development Team <pacman-dev@lists.archlinux.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
is_pacman_locked() {
local lockfile="$(pacman-conf DBPath)/db.lck"
if [[ -f $lockfile ]]; then
local pid=$(<"$lockfile")
# Check if the pid is valid and the process is still running
if [[ -n $pid && $pid =~ ^[0-9]+$ && -d /proc/$pid ]]; then
return 0
fi
fi
return 1
}