Bug#669699: openssh-server: Please support dynamic motd (initscripts change)
Package: openssh-server
Version: 1:5.9p1-5
Severity: normal
Tags: patch
Separation of static and dynamic motd components
================================================
Currently initscripts generates the motd, and stores it in
/var/run/motd. /etc/motd is a symlink to this file, and
/etc/motd.tail contains the static user-editable part. This is not
ideal for a number of reasons, including /etc/motd not being a file as
documented, and not behaving like a conffile, and being generally
complex and confusing. It also unnecessarily wastes space on /run.
In a future upload of initscripts, this will be simplified:
- /etc/motd will contain the user-editable part, and will be a regular
file; /etc/motd.tail will be migrated here.
- The dynamic part (uname -a) will be stored in /run/motd.dynamic;
this will be generated at boot like we do now. There is scope for
supporting other dynamically generated info in the future, should
there ever be any demand for that, but for now we are simply going
to retain the existing behaviour. Users can extend this should
they wish.
This does require two separate pam_motd lines in your pam service
file, one for the dynamic and one for the static parts (patch
attached). Enabling the use of /run/motd.dynamic before I create
it in initscripts is harmless, and it means we can seamlessly
switch over once you have made this change.
Thanks,
Roger
-- System Information:
Debian Release: wheezy/sid
APT prefers unstable
APT policy: (550, 'unstable'), (500, 'testing'), (400, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages openssh-server depends on:
ii adduser 3.113+nmu1
ii debconf [debconf-2.0] 1.5.42
ii dpkg 1.16.2
ii libc6 2.13-30
ii libcomerr2 1.42.2-2
ii libgssapi-krb5-2 1.10+dfsg~beta1-2
ii libkrb5-3 1.10+dfsg~beta1-2
ii libpam-modules 1.1.3-7
ii libpam-runtime 1.1.3-7
ii libpam0g 1.1.3-7
ii libselinux1 2.1.9-4
ii libssl1.0.0 1.0.1-4
ii libwrap0 7.6.q-23
ii lsb-base 4.1+Debian0
ii openssh-client 1:5.9p1-5
ii procps 1:3.3.2-3
ii zlib1g 1:1.2.6.dfsg-2
Versions of packages openssh-server recommends:
ii openssh-blacklist 0.4.1
ii openssh-blacklist-extra 0.4.1
ii xauth 1:1.0.6-1
Versions of packages openssh-server suggests:
pn molly-guard <none>
pn monkeysphere <none>
pn rssh <none>
pn ssh-askpass 1:1.2.4.1-9
pn ufw <none>
-- debconf information excluded
diff -urN openssh-5.9p1.original/debian/openssh-server.sshd.pam openssh-5.9p1/debian/openssh-server.sshd.pam
--- openssh-5.9p1.original/debian/openssh-server.sshd.pam 2010-08-23 23:07:51.000000000 +0100
+++ openssh-5.9p1/debian/openssh-server.sshd.pam 2012-04-21 09:48:09.441916691 +0100
@@ -24,6 +24,9 @@
@include common-session
# Print the message of the day upon successful login.
+# This includes a dynamically generated part from /run/motd.dynamic
+# and a static (admin-editable) part from /etc/motd.
+session optional pam_motd.so motd=/run/motd.dynamic
session optional pam_motd.so # [1]
# Print the status of the user's mailbox upon successful login.
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