Allow update-game-score to run sgid instead of suid.

* configure.ac (gamegroup): New AC_SUBST.
(--with-gameuser): Allow to specify a group instead of a user.
In the default case, check at configure time if a 'games' user
exists.
* lib-src/update-game-score.c: Allow the program to run sgid
instead of suid, in order to match common practice for most games.
(main): Check if we are running sgid.  Pass appropriate file
permission bits to 'write_scores'.
(write_scores): New 'mode' argument, instead of hardcoding 0644.
(get_prefix): Update error message.
* lib-src/Makefile.in (gamegroup): New variable, set by configure.
($(DESTDIR)${archlibdir}): Handle both suid or sgid when
installing the 'update-game-score' program.
* lisp/play/gamegrid.el (gamegrid-add-score-with-update-game-score):
Allow the 'update-game-score' helper program to run suid or sgid.

1 files changed, 7 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 309b04f26ab..b02203dbe75 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2015-01-21  Ulrich Müller  <ulm@gentoo.org>
+
+        * configure.ac (gamegroup): New AC_SUBST.
+        (--with-gameuser): Allow to specify a group instead of a user.
+        In the default case, check at configure time if a 'games' user
+        exists.
+
 2015-01-16  Paul Eggert  <eggert@cs.ucla.edu>
 
         Give up on -Wsuggest-attribute=const