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Adds specifying multiple paths to motd files and motd.d
directories to be displayed. A colon-separated list of
paths is specified as arguments motd and motd_dir to the
pam_motd module.
This gives packages several options to install motd files to.
By default, the paths are, with highest priority first:
/etc/motd
/run/motd
/usr/lib/motd
/etc/motd.d/
/run/motd.d/
/usr/lib/motd.d/
Which is equivalent to the following arguments:
motd=/etc/motd:/run/motd:/usr/lib/motd
motd_dir=/etc/motd.d:/run/motd.d:/usr/lib/motd.d
Files with the same filename in a lower-priority directory,
as specified by the order in the colon-separated list, are
overridden, meaning PAM will not display them.
This allows a package to contain motd files under
/usr/lib instead of the host configuration in /etc.
A service may also write a dynamically generated motd in
/run/motd.d/ and have PAM display it without needing a
symlink from /etc/motd.d/ installed.
Closes #68
* modules/pam_motd/pam_motd.8.xml: update documentation
* modules/pam_motd/pam_motd.c: add specifying multiple motd paths
* xtests/.gitignore: add generated test script
* xtests/Makefile.am: add test source, scripts and config files
* xtests/tst-pam_motd.c: create
* xtests/tst-pam_motd.sh: create
* xtests/tst-pam_motd1.pamd: create
* xtests/tst-pam_motd1.sh: create
* xtests/tst-pam_motd2.pamd: create
* xtests/tst-pam_motd2.sh: create
* xtests/tst-pam_motd3.pamd: create
* xtests/tst-pam_motd3.sh: create
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