Root/package/block-extroot/files/50_determine_usb_root

1#!/bin/sh
2# Copyright (C) 2010 Vertical Communications
3# This is free software, licensed under the GNU General Public License v2.
4# See /LICENSE for more information.
5
6
7determine_external_root() {
8    pi_include /lib/functions/extmount.sh
9    pi_include /lib/functions/mount.sh
10
11    local OLD_UCI_CONFIG_DIR="$UCI_CONFIG_DIR"
12    set_jffs_mp
13    determine_root_device
14
15    # extroot requires extroot and fstab config files, therefore
16    # we assume configuration is incomplete and not to be used if either of them
17    # is missing (for jffs versions of these files on squashfs image)
18    if [ "$jffs" = "/tmp/overlay" ] && [ -r "/tmp/overlay/etc/config/fstab" ]; then
19        UCI_CONFIG_DIR="/tmp/overlay/etc/config"
20        ER_IS_SQUASHFS=true
21    fi
22
23    # For squashfs on firstboot root_device will be tmpfs for the ramoverlay,
24    # unless there is a saved config, in which case it will be /dev/root,
25    # however in the case of a saved config, it won't be restored until after
26    # this script, so there won't be a config on the first boot after
27    # flashing a squashfs-based filesystem
28    # For ext2, ramdisk, or jffs2 root filesystems root_device is /dev/root
29    # For squashfs after firstboot, root filesystem is /dev/root
30    # We only use the config from the root or jffs if the root_device is
31    # /dev/root
32    [ "$root_device" = "/dev/root" ] && {
33        er_load_modules
34        [ -n "$extroot_settle_time" ] && [ "$extroot_settle_time" -gt 0 ] && {
35            sleep $extroot_settle_time
36        }
37        config_load fstab
38        config_foreach config_mount_by_section mount 1
39        
40        [ "$rootfs_found" = "1" ] && grep -q ' /overlay ' /proc/mounts && {
41            pi_extroot_mount_success=true
42            pi_mount_skip_next=false
43        }
44    }
45    UCI_CONFIG_DIR="$OLD_UCI_CONFIG_DIR"
46}
47
48boot_hook_add preinit_mount_root determine_external_root
49
50

Archive Download this file



interactive