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--- server:running_the_server:signals [2018/02/28 08:34] – created karl
+++ server:running_the_server:signals [2025/04/18 13:08] (current) – external edit 127.0.0.1
@@ Line 12: / Line 12: @@
 ==== 1 Hang Up [SIG]HUP ====
-This signal forces the crossfire server unfortunately not
+This signal forces the crossfire [[:server]] unfortunately not
-to reload the configuration files, but should write a new log file,
+to reload the configuration files, \\
+but reopens the log file in append mode,
 if the logging output is not send to stderr ( of some terminal ) .
 Syntax : ''kill -1 `pidof crossfire-server`''
+The whole path to the logfile is defined in //server/include/config.h// as absolute path-name :
+  * Windows : #define LOGFILE "var\\crossfire.log"
+  * #else : #define LOGFILE "/var/log/crossfire/logfile"
+The //configure// script inside the [[:server:server_compiling|source]] does not alter that path, even when the //--prefix// option had been applied. \\
+The server may choke at start up, if the directory //var// or // /var/log/crossfire// does not exist, \\ or has not set proper writable permissions.
+The source code file //server/common.logger.c// opens the existing logfile \\
+in append mode inside the function //void LOG (LogLevel logLevel, const char *format, ...)// :
+<code c>if ((logfile = fopen(settings.logfilename, "a")) == NULL)</code>
+"a" means append :
+>**a**       Open for appending (writing at end of file).  The file is
+>        created if it does not exist.  The stream is positioned at the
+>        end of the file.
+From manual page [[http://man7.org/linux/man-pages/man3/fopen.3.html]]
+FIXME It makes no sense to append to a logfile; I have a 55 MB logfile and would like the idea, to completely overwrite it, without the need to shut down the server entirely. \\
+In the case of a long-time running server like the [[:servers:metalforge]] one , this log file could crash the Operating System because of it's sheer size ( filling up the partition ).
 ==== 2 Interrupt [SIG}INT ====