Stop ctrl-c from aborting detached hciattach

Hi,

I was running some test programs on my embedded system, and noticed that
my detached hciattach process, which I started from the command line,
was being killed when I entered ctrl-c to abort my test program.

The attached patch prevents signals generated by keyboard sequences, such as ctrl-c, from being delivered to the detached hciattach process by changing its process group id.

I'm not sure why daemon() wasn't called to create the detached process like hcid does it, but calling setpgrp() seems to be sufficient.

Regards,
../fam

Frank Mandarino                                fmandarino(a)endrelia.com
Endrelia Technologies Inc.
Toronto, Ontario, Canada

Index: hciattach.c
===================================================================
RCS file: /cvsroot/bluez/utils/tools/hciattach.c,v retrieving revision 1.41

diff -u -r1.41 hciattach.c
@@ -1255,6 +1255,10 @@
 			return 0;
 		}
 
+		/* set a new process group so that ctrl-c
+		   won't abort the detached process */
+		setpgrp();
+
 		for (i = 0; i < 20; i++)
 			if (i != n)
 				close(i);

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