+sub commit_hook_enabled () { #{{{
+ open(COMMITLOCK, "+>$config{wikistatedir}/commitlock") ||
+ error ("cannot write to $config{wikistatedir}/commitlock: $!");
+ if (! flock(COMMITLOCK, 1 | 4)) { # LOCK_SH | LOCK_NB to test
+ close COMMITLOCK;
+ return 0;
+ }
+ close COMMITLOCK;
+ return 1;
+} #}}}
+
+sub disable_commit_hook () { #{{{
+ open(COMMITLOCK, ">$config{wikistatedir}/commitlock") ||
+ error ("cannot write to $config{wikistatedir}/commitlock: $!");
+ if (! flock(COMMITLOCK, 2)) { # LOCK_EX
+ error("failed to get commit lock");
+ }
+} #}}}
+
+sub enable_commit_hook () { #{{{
+ close COMMITLOCK;
+} #}}}
+