rtapi/syslog-async: import syslog-async-0.2.tar.gz

from http://www.thekelleys.org.uk/syslog-async
this is to get around syslog() blocking and signal handling issues

src/rtapi/syslog-async/CHANGELOG

@@ -0,0 +1,9 @@
+release 0.2
+
+        Dual-license under GPL-v2 and GPL-v3.
+
+
+release 0.1
+
+	Initial release.
+

src/rtapi/syslog-async/Makefile

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+all: test libs
+
+test: syslog_test.o syslog_async.o	
+	gcc syslog_async.o syslog_test.o -o syslog_test
+
+syslog_test.o: syslog_test.c syslog_async.h
+	gcc -c syslog_test.c
+
+syslog_async.o:  syslog_async.c syslog_async.h
+	gcc -Fpic -O2 -c -Wall syslog_async.c 
+
+libs: syslog_async.o
+	gcc -shared -Wl,-soname,libsyslogasync.so.1 -o \
+	      libsyslogasync.so.1.0 syslog_async.o -lc
+
+clean: 
+	rm -f *.o *~ *.so.* syslog_test

src/rtapi/syslog-async/README

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+Syslog_async
+------------
+
+A non-blocking syslog() replacement.
+
+It is not widely known that the standard Unix syslog() library routine
+can block waiting for the syslog daemon, but it is generally true. On
+some systems, using a datagram socket for /dev/log avoids endless
+waits, but on Linux, even this does not work. Try typing
+
+killall -STOP syslogd
+
+into a root terminal on a non-critical box: Eventually, everything
+will stop.
+
+This library provides a version of syslog() which never blocks: the
+code was originally written for dnsmasq, to fix a deadlock between
+syslod and dnsmasq where syslogd uses dnsmasq for DNS, and dnsmasq
+uses syslogd for logging.  It should be generally useful for any 
+daemon where it's more important that the daemon continue to function
+than that it continue to log.
+
+The code has been tested on Linux 2.6, OpenBSD 4.0 and FreeBSD 6.0. It
+has been run with syslogd and syslog-ng. Note that it is not,
+currently, threadsafe.
+
+The header file, syslog_async.h is extensively commented, and details
+how to use the library. It is, as far as possible, API compatible with
+the POSIX-standard syslog.
+
+Simon Kelley (simon@thekelleys.org.uk)
+Duxford,
+Cambridge,
+UK.
+
+Sat Feb 24 2007

src/rtapi/syslog-async/Submakefile

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+INCLUDES += rtapi/syslog-async
+
+../include/%.h: ./rtapi/syslog-async/%.h
+	cp  $^ $@