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Date: Sun, 10 Oct 2004 19:31:17 +0200
From: Marcin Koziej <creep@daedalus.desk.pl>
To: freebsd-questions@freebsd.org
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Subject: [PATCH] boot0cnf - broken?
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FreeBSD 5.2.1-RELEASE-p9 #1: Thu Aug 12 19:39:05 CEST 2004 
When wanted to make a simple boot fd using boot0cfg, i got error:

boot0cfg: write_mbr: /dev/fd0: No such file or directory

truss revealed that open("/dev/fd0",O_WRONLY,0666) failed with ERR#16 
'Device busy'.

No wonder, fd0 was opened for reading just moment before in read_mbr and 
wasn't closed.

A small change fixed boot0cfg:
==================================================
--- boot0cfg.c  Sun Oct 10 19:27:22 2004
+++ boot0cfg.c.ok       Sun Oct 10 19:26:54 2004
@@ -244,6 +244,7 @@
     *mbr = malloc(sizeof(buf));
     memcpy(*mbr, buf, sizeof(buf));
 
+       close(fd);
     return sizeof(buf);
 }
 
==================================================

Can anybody check if this is an issue for FreeBSD 5.3 beta and if yes send a pr?

m.