This patch adds mtd support through (e.g.) root=mtd:0 parameter recognition. These devices must be mounted with "mount mtd0 /mnt/foo" and do not have a corresponding block device in /dev (but /dev/mtd0 is a character device which is used here to ensure that mtd0 exists before we mount it).
Even though mtd devices are not block devices (see http://www.linux-mtd.infradead.org/faq/general.html#L_mtd_what ) it seems like creating a module separate from rootfs-block would end up with a large amount of duplication. Signed-off-by: Daniel Drake <d...@laptop.org> Index: dracut-013/modules.d/95rootfs-block/parse-block.sh =================================================================== --- dracut-013.orig/modules.d/95rootfs-block/parse-block.sh +++ dracut-013/modules.d/95rootfs-block/parse-block.sh @@ -15,4 +15,9 @@ case "$root" in /dev/*) root="block:${root}" rootok=1 ;; + mtd:*) + rootok=1 ;; + mtd[0-9]*) + root="mtd:${root#mtd}" + rootok=1 ;; esac Index: dracut-013/modules.d/95rootfs-block/block-genrules.sh =================================================================== --- dracut-013.orig/modules.d/95rootfs-block/block-genrules.sh +++ dracut-013/modules.d/95rootfs-block/block-genrules.sh @@ -2,16 +2,25 @@ # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- # ex: ts=8 sw=4 sts=4 et filetype=sh -if [ "${root%%:*}" = "block" ]; then +cfg_udev_for_root() { + local rootdev=$1 { printf 'KERNEL=="%s", SYMLINK+="root"\n' \ - ${root#block:/dev/} + ${rootdev#/dev/} printf 'SYMLINK=="%s", SYMLINK+="root"\n' \ - ${root#block:/dev/} + ${rootdev#/dev/} } >> $UDEVRULESD/99-root.rules printf '[ -e "%s" ] && { ln -s "%s" /dev/root 2>/dev/null; rm "$job"; }\n' \ - "${root#block:}" "${root#block:}" > $hookdir/initqueue/settled/blocksymlink.sh + "$rootdev" "$rootdev" > $hookdir/initqueue/settled/blocksymlink.sh echo '[ -e /dev/root ]' > $hookdir/initqueue/finished/block.sh +} + +if [ "${root%%:*}" = "block" ]; then + cfg_udev_for_root "${root#block:}" +elif [ "${root%%:*}" = "mtd" ]; then + cfg_udev_for_root "/dev/mtd${root#mtd:}" fi + +unset cfg_udev_for_root Index: dracut-013/modules.d/95rootfs-block/mount-root.sh =================================================================== --- dracut-013.orig/modules.d/95rootfs-block/mount-root.sh +++ dracut-013/modules.d/95rootfs-block/mount-root.sh @@ -28,9 +28,9 @@ filter_rootopts() { mount_root() { local _ret - # sanity - determine/fix fstype - rootfs=$(det_fs "${root#block:}" "$fstype") - mount -t ${rootfs} -o "$rflags",ro "${root#block:}" "$NEWROOT" + local rootdev=$1 + local rootfs=$2 + mount -t $rootfs -o "$rflags",ro "$rootdev" "$NEWROOT" READONLY= fsckoptions= @@ -85,7 +85,7 @@ mount_root() { if [ "$mp" = "/" ]; then # sanity - determine/fix fstype - rootfs=$(det_fs "${root#block:}" "$fs") + rootfs=$(det_fs "$rootdev" "$fs") rootopts=$opts break fi @@ -105,18 +105,22 @@ mount_root() { # printf '%s %s %s %s 1 1 \n' "$esc_root" "$NEWROOT" "$rootfs" "$rflags" >/etc/fstab if [ -z "$fastboot" -a "$READONLY" != "yes" ] && ! strstr "${rflags},${rootopts}" _netdev; then - fsck_single "${root#block:}" "$rootfs" "$fsckoptions" + fsck_single "$rootdev" "$rootfs" "$fsckoptions" _ret=$? [ $_ret -ne 255 ] && echo $_ret >/run/initramfs/root-fsck fi - info "Remounting ${root#block:} with -o ${rflags}" - mount -t "$rootfs" -o "$rflags" "${root#block:}" "$NEWROOT" 2>&1 | vinfo + info "Remounting $rootdev with -o ${rflags}" + mount -t "$rootfs" -o "$rflags" "$rootdev" "$NEWROOT" 2>&1 | vinfo [ -f "$NEWROOT"/forcefsck ] && rm -f "$NEWROOT"/forcefsck 2>/dev/null [ -f "$NEWROOT"/.autofsck ] && rm -f "$NEWROOT"/.autofsck 2>/dev/null } -if [ -n "$root" -a -z "${root%%block:*}" ]; then - mount_root +if [ "${root%%:*}" = "block" ]; then + # sanity - determine/fix fstype + rootfstype=$(det_fs "$rootdev" "$fstype") + mount_root "${root#block:}" $rootfstype +elif [ "${root%%:*}" = "mtd" ]; then + mount_root "mtd${root#mtd:}" $fstype fi -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
