import the plan 9 libraries libc (lib9) and libbio into the tree.
remove the dependency on /home/r.
SVN=122482
diff --git a/src/libbio/bprint.c b/src/libbio/bprint.c
new file mode 100644
index 0000000..2e3867a
--- /dev/null
+++ b/src/libbio/bprint.c
@@ -0,0 +1,54 @@
+/*
+http://code.google.com/p/inferno-os/source/browse/libbio/bprint.c
+
+ Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
+ Revisions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com). All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+int
+Bprint(Biobuf *bp, char *fmt, ...)
+{
+ va_list ap;
+ char *ip, *ep, *out;
+ int n;
+
+ ep = (char*)bp->ebuf;
+ ip = ep + bp->ocount;
+ va_start(ap, fmt);
+ out = vseprint(ip, ep, fmt, ap);
+ va_end(ap);
+ if(out == nil || out >= ep-5) {
+ Bflush(bp);
+ ip = ep + bp->ocount;
+ va_start(ap, fmt);
+ out = vseprint(ip, ep, fmt, ap);
+ va_end(ap);
+ if(out >= ep-5)
+ return Beof;
+ }
+ n = out-ip;
+ bp->ocount += n;
+ return n;
+}
