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From b6f2e05819d9867b7ca69365091ff480556fcfe9 Mon Sep 17 00:00:00 2001
From: WANG Chao <chaowang@redhat.com>
Date: Fri, 26 Apr 2013 15:16:19 +0800
Subject: [PATCH] _emergency_shell: Show current working directory correctly in
shell.
When dropped to emergency shell, for example, use rd.break=pre-pivot,
the PS1 won't correctly show current directory we're in:
pre-pivot:/# cd /sysroot/
pre-pivot:/#
(still shows "/")
Let's take a look at PS1 variable:
(I'm adding prefix/suffix 'x' to make it clear):
pre-pivot:/# echo x${PS1}x
xpre-pivot:/# x
(PS1 isn't dynamic)
Regarding the current dracut code, it should be:
pre-pivot:/# cd /sysroot/etc
pre-pivot:/sysroot/etc#
With this patch:
pre-pivot:/# echo x${PS1}x
xpre-pivot:${PWD}# x
(Now PS1 is dynamic, it will show the directory correctly)
I tested for both normal boot and kdump boot.
Signed-off-by: WANG Chao <chaowang@redhat.com>
---
modules.d/99base/dracut-lib.sh | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh
index 9bd25f4..5cb0add 100755
--- a/modules.d/99base/dracut-lib.sh
+++ b/modules.d/99base/dracut-lib.sh
@@ -926,7 +926,7 @@ _emergency_shell()
local _name="$1"
if [ -n "$DRACUT_SYSTEMD" ]; then
> /.console_lock
- echo "PS1=\"$_name:\${PWD}# \"" >/etc/profile
+ echo "PS1=\"$_name:\\\${PWD}# \"" >/etc/profile
systemctl start dracut-emergency.service
rm -f /etc/profile
rm -f /.console_lock
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