From: Andrey Borzenkov <arvidjaar@gmail.com>
Date: Sat, 6 Nov 2010 21:46:53 +0000 (+0300)
Subject: 95rootfs-block: fix missing root when label contains slash
X-Git-Tag: 008~55
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=0e08f1de8d6a7ec2e59078fb149e07a7d26e85e8;p=thirdparty%2Fdracut.git

95rootfs-block: fix missing root when label contains slash

It is not clearly documented, but apparently fsck
(or, probably, getmntent) is using backslash as
escape character.

Label containing slash is converted to \x2f but '\'
is eaten by fsck later. Escape '\' before writing
into fstab.

v2:
- fix sed expression
- use printf instead of echo because echo eats '\' as well

Signed-off-by: Andrey Borzenkov <arvidjaar@gmail.com>
---

diff --git a/modules.d/95rootfs-block/mount-root.sh b/modules.d/95rootfs-block/mount-root.sh
index ff64209ff..9065bed8b 100755
--- a/modules.d/95rootfs-block/mount-root.sh
+++ b/modules.d/95rootfs-block/mount-root.sh
@@ -106,7 +106,9 @@ if [ -n "$root" -a -z "${root%%block:*}" ]; then
             done
     fi
 
-    echo ${root#block:} "$NEWROOT" "$rootfs" ${rflags},${rootopts} 1 1 > /etc/fstab
+    # backslashes are treated as escape character in fstab
+    esc_root=$(echo ${root#block:} | sed 's,\\,\\\\,g')
+    printf "%s $NEWROOT $rootfs ${rflags},${rootopts} 1 1\n" "$esc_root" > /etc/fstab
 
     if [ -z "$fastboot" -a "$READONLY" != "yes" ]; then
         info "Checking filesystems"