| 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 | |
| 7 | determine_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 | ER_OVERLAY_PREFIX="/tmp/overlay" |
| 22 | fi |
| 23 | |
| 24 | # For squashfs on firstboot root_device will be tmpfs for the ramoverlay, |
| 25 | # unless there is a saved config, in which case it will be /dev/root, |
| 26 | # however in the case of a saved config, it won't be restored until after |
| 27 | # this script, so there won't be a config on the first boot after |
| 28 | # flashing a squashfs-based filesystem |
| 29 | # For ext2, ramdisk, or jffs2 root filesystems root_device is /dev/root |
| 30 | # For squashfs after firstboot, root filesystem is /dev/root |
| 31 | # We only use the config from the root or jffs if the root_device is |
| 32 | # /dev/root |
| 33 | [ "$root_device" = "/dev/root" ] && { |
| 34 | er_load_modules |
| 35 | [ -n "$extroot_settle_time" ] && [ "$extroot_settle_time" -gt 0 ] && { |
| 36 | sleep $extroot_settle_time |
| 37 | } |
| 38 | config_load fstab |
| 39 | config_foreach config_mount_by_section mount 1 |
| 40 | |
| 41 | [ "$rootfs_found" = "1" ] && grep -q ' /overlay ' /proc/mounts && { |
| 42 | pi_extroot_mount_success=true |
| 43 | pi_mount_skip_next=false |
| 44 | } |
| 45 | } |
| 46 | UCI_CONFIG_DIR="$OLD_UCI_CONFIG_DIR" |
| 47 | } |
| 48 | |
| 49 | boot_hook_add preinit_mount_root determine_external_root |
| 50 | |
| 51 | |
