base-files: add initial support for mounting overlayfs
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@26207 3c298f89-4303-0410-b956-a3cf2f4a3e73master
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a99ab5f02e
commit
d5e202e289
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@ -3,10 +3,10 @@
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# Copyright (C) 2006-2010 OpenWrt.org
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# Copyright (C) 2006-2010 OpenWrt.org
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# Copyright (C) 2010 Vertical Communications
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# Copyright (C) 2010 Vertical Communications
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reset_check_for_mini_fo() {
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reset_check_for_overlay() {
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if grep -q mini_fo /proc/filesystems; then
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if grep -qE '(mini_fo|overlay)' /proc/filesystems; then
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reset_has_fo=true
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reset_has_fo=true
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fi
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fi
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}
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}
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boot_hook_add jffs2reset reset_check_for_mini_fo
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boot_hook_add jffs2reset reset_check_for_overlay
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@ -3,11 +3,11 @@
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# Copyright (C) 2006-2010 OpenWrt.org
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# Copyright (C) 2006-2010 OpenWrt.org
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# Copyright (C) 2010 Vertical Communications
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# Copyright (C) 2010 Vertical Communications
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check_for_mini_fo() {
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check_for_overlay() {
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if ! grep -q mini_fo /proc/filesystems; then
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if ! grep -qE '(mini_fo|overlay)' /proc/filesystems; then
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boot_run_hook no_fo
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boot_run_hook no_fo
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exit 1
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exit 1
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fi
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fi
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}
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}
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boot_hook_add switch2jffs check_for_mini_fo
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boot_hook_add switch2jffs check_for_overlay
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@ -125,7 +125,9 @@ pivot() { # <new_root> <old_root>
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fopivot() { # <rw_root> <ro_root> <dupe?>
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fopivot() { # <rw_root> <ro_root> <dupe?>
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root=$1
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root=$1
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{
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{
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if grep -q mini_fo /proc/filesystems; then
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if grep -q overlay /proc/filesystems; then
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mount -t overlayfs -olowerdir=/,upperdir=$1 "overlayfs:$1" /mnt && root=/mnt
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elif grep -q mini_fo /proc/filesystems; then
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mount -t mini_fo -o base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
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mount -t mini_fo -o base=/,sto=$1 "mini_fo:$1" /mnt 2>&- && root=/mnt
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else
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else
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mount --bind / /mnt
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mount --bind / /mnt
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