58 lines
1.9 KiB
Plaintext
58 lines
1.9 KiB
Plaintext
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#!/bin/sh
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# Copyright (C) 2010 Vertical Communications
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# This is free software, licensed under the GNU General Public License v2.
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# See /LICENSE for more information.
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determine_external_root() {
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pi_include /lib/functions/extmount.sh
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pi_include /lib/functions/mount.sh
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local OLD_UCI_CONFIG_DIR="$UCI_CONFIG_DIR"
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set_jffs_mp
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determine_root_device
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# extroot requires extroot and fstab config files, therefore
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# we assume configuration is incomplete and not to be used if either of them
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# is missing (for jffs versions of these files on squashfs image)
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if [ "$jffs" = "/tmp/overlay" ] && [ -r "/tmp/overlay/etc/config/fstab" ]; then
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UCI_CONFIG_DIR="/tmp/overlay/etc/config"
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ER_IS_SQUASHFS=true
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ER_OVERLAY_PREFIX="/tmp/overlay"
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fi
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# For squashfs on firstboot root_device will be tmpfs for the ramoverlay,
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# unless there is a saved config, in which case it will be /dev/root,
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# however in the case of a saved config, it won't be restored until after
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# this script, so there won't be a config on the first boot after
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# flashing a squashfs-based filesystem
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# For ext2, ramdisk, or jffs2 root filesystems root_device is /dev/root
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# For squashfs after firstboot, root filesystem is /dev/root
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# We only use the config from the root or jffs if the root_device is
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# /dev/root
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[ "$root_device" = "/dev/root" ] && {
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er_load_modules
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[ -n "$extroot_settle_time" ] && [ "$extroot_settle_time" -gt 0 ] && {
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sleep $extroot_settle_time
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}
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config_load fstab
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config_foreach config_mount_by_section mount 1
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ER_OVERLAY_ROM="/no-extroot"
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[ "$rootfs_found" = "1" ] && grep -q ' /overlay ' /proc/mounts && {
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pi_extroot_mount_success=true
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pi_mount_skip_next=false
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ER_OVERLAY_ROM="/overlay"
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}
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[ "$rootfs_found" = "1" ] && grep -q ' /rom ' /proc/mounts && {
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pi_extroot_mount_success=true
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pi_mount_skip_next=false
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ER_OVERLAY_ROM="/rom"
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}
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}
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UCI_CONFIG_DIR="$OLD_UCI_CONFIG_DIR"
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}
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boot_hook_add preinit_mount_root determine_external_root
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