[src/trunk]: src/etc Add optional release info in /etc/motd

[kim <kim%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/d019f1f6a081
branches:  trunk
changeset: 943817:d019f1f6a081
user:      kim <kim%NetBSD.org@localhost>
date:      Fri Sep 11 09:59:35 2020 +0000

description:
Add optional release info in /etc/motd

My personal preferencese for /etc/rc.conf:

    update_motd_release=YES
    motd_release_tag='Binaries: '

This provides an explanation to users about the second version in motd.

diffstat:

 etc/defaults/rc.conf |   3 ++-
 etc/rc.d/motd        |  15 ++++++++++++---
 2 files changed, 14 insertions(+), 4 deletions(-)

diffs (55 lines):

diff -r 73a4bcbffccb -r d019f1f6a081 etc/defaults/rc.conf
--- a/etc/defaults/rc.conf      Fri Sep 11 09:08:47 2020 +0000
+++ b/etc/defaults/rc.conf      Fri Sep 11 09:59:35 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: rc.conf,v 1.158 2020/06/15 01:57:30 christos Exp $
+#      $NetBSD: rc.conf,v 1.159 2020/09/11 09:59:35 kim Exp $
 #
 # /etc/defaults/rc.conf --
 #      default configuration of /etc/rc.conf
@@ -133,6 +133,7 @@
 per_user_tmp_dir="/private/tmp"                        # real storage for /tmp
 clear_tmp=YES                                  # clear /tmp after reboot
 update_motd=YES                                        # updates /etc/motd
+update_motd_release=NO motd_release_tag=""     # release info in /etc/motd
 dmesg=YES              dmesg_flags="-t"        # write /var/run/dmesg.boot
 accounting=NO                                  # uses /var/account/acct
 newsyslog=NO           newsyslog_flags=""      # trim log files
diff -r 73a4bcbffccb -r d019f1f6a081 etc/rc.d/motd
--- a/etc/rc.d/motd     Fri Sep 11 09:08:47 2020 +0000
+++ b/etc/rc.d/motd     Fri Sep 11 09:59:35 2020 +0000
@@ -1,6 +1,6 @@
 #!/bin/sh
 #
-# $NetBSD: motd,v 1.9 2004/08/13 18:08:03 mycroft Exp $
+# $NetBSD: motd,v 1.10 2020/09/11 09:59:35 kim Exp $
 #
 
 # PROVIDE: motd
@@ -16,7 +16,7 @@
 
 motd_start()
 {
-       #       Update kernel info in /etc/motd
+       #       Update kernel and release info in /etc/motd
        #       Must be done *before* interactive logins are possible
        #       to prevent possible race conditions.
        #
@@ -27,7 +27,16 @@
        ( umask 022
        T=/etc/_motd
        sysctl -n kern.version | while read i; do echo $i; break; done > $T
-       sed '1{/^NetBSD.*/{d;};};' < /etc/motd >> $T
+       if checkyesno update_motd_release; then
+               local t="${motd_release_tag}"
+               sed -En '1{/^NetBSD/{s/^/'"$t"'/;h;d;};q;}
+                   /^ *Build ID */{s//(/;s/$/)/;H;g;y/\n/ /;p;q;}
+                   ${g;p;}' < /etc/release >> $T
+               sed -E '1,2{/^'"${t+(${t})?}"'NetBSD/{d;};};' \
+                   < /etc/motd >> $T
+       else
+               sed '1{/^NetBSD.*/{d;};};' < /etc/motd >> $T
+       fi
        cmp -s $T /etc/motd || cp $T /etc/motd
        rm -f $T
        )