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base-files: add /etc/shadow to list of essential files to keep in sysupgrade (bug 18206)

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Based on bug #18206 sysupgrade can lead to loss of password information in
certain situations. Most likely all users who will upgrade from versions
r43017-43040, will lose their current passwords. :-(
https://dev.openwrt.org/ticket/18206

Currently /etc/shadow is defined as a conffile in base-files:
https://dev.openwrt.org/browser/trunk/package/base-files/Makefile#L37

But it is not defined in the default list of essential files to keep in
sysupgrade:
https://dev.openwrt.org/browser/trunk/package/base-files/files/lib/upgrade/keep.d/base-files-essential

If exporting conffiles info fails, /etc/shadow can get lost.

Shadow passwords are now the default, so saying that preserving /etc/passwd
is essential while /etc/shadow is not, makes no sense.

The attached patch adds /etc/shadow to the list of essential files.

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>

SVN-Revision: 43061
This commit is contained in:
Felix Fietkau 2014-10-25 17:22:46 +00:00
parent dd86bc73fb
commit 7a5002ec9d
1 changed files with 1 additions and 0 deletions
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package/base-files/files/lib/upgrade/keep.d/base-files-essential
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@ -4,6 +4,7 @@
/etc/group
/etc/passwd
/etc/profile
/etc/shadow
/etc/shells
/etc/sysctl.conf
/etc/rc.local