add libbio to ape for libsec thumbprints.
note that Bgetd was left out pending reorginization of
(fmt)charstod

Reference: /n/atom/patch/applied2013/apebio
Date: Tue May 28 17:31:42 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/ape/lib/bio/mkfile	Thu Jan  1 00:00:00 1970
+++ /sys/src/ape/lib/bio/mkfile	Tue May 28 17:31:35 2013
@@ -0,0 +1,37 @@
+APE=/sys/src/ape
+<$APE/config
+
+LIB=/$objtype/lib/ape/libbio.a
+OFILES=\
+	bbuffered.$O\
+	bfildes.$O\
+	bflush.$O\
+	bgetrune.$O\
+	bgetc.$O\
+#	bgetd.$O\
+	binit.$O\
+	boffset.$O\
+	bprint.$O\
+	bputrune.$O\
+	bputc.$O\
+	brdline.$O\
+	brdstr.$O\
+	bread.$O\
+	bseek.$O\
+	bwrite.$O\
+	bvprint.$O\
+
+HFILES=/sys/include/ape/bio.h
+
+UPDATE=\
+	mkfile\
+	$HFILES\
+	${OFILES:%.$O=%.c}\
+	${LIB:/$objtype/%=/386/%}\
+
+</sys/src/cmd/mksyslib
+
+CFLAGS=-TVwc -D_PLAN9_SOURCE -D_POSIX_SOURCE -I. -I../9
+
+%.$O:	/sys/src/libbio/%.c
+	$CC $CFLAGS /sys/src/libbio/$stem.c
--- /sys/include/ape/bio.h	Thu Jan  1 00:00:00 1970
+++ /sys/include/ape/bio.h	Tue May 28 17:31:35 2013
@@ -0,0 +1,82 @@
+#ifndef _PLAN9_SOURCE
+  This header file is an extension to ANSI/POSIX
+#endif
+
+#ifndef __BIO_H_
+#define __BIO_H_
+#pragma	src	"/sys/src/libbio"
+#pragma	lib	"/$M/lib/ape/libbio.a"
+
+typedef	struct	Biobuf	Biobuf;
+typedef	struct	Biobufhdr	Biobufhdr;
+
+enum
+{
+	Bsize		= 8*1024,
+	Bungetsize	= 4,		/* space for ungetc */
+	Bmagic		= 0x314159,
+	Beof		= -1,
+	Bbad		= -2,
+
+	Binactive	= 0,		/* states */
+	Bractive,
+	Bwactive,
+	Bracteof,
+};
+
+struct	Biobufhdr
+{
+	int	icount;		/* neg num of bytes at eob */
+	int	ocount;		/* num of bytes at bob */
+	int	rdline;		/* num of bytes after rdline */
+	int	runesize;	/* num of bytes of last getrune */
+	int	state;		/* r/w/inactive */
+	int	fid;		/* open file */
+	int	flag;		/* magic if malloc'ed */
+	vlong	offset;		/* offset of buffer in file */
+	int	bsize;		/* size of buffer */
+	uchar*	bbuf;		/* pointer to beginning of buffer */
+	uchar*	ebuf;		/* pointer to end of buffer */
+	uchar*	gbuf;		/* pointer to good data in buf */
+};
+
+struct	Biobuf
+{
+	Biobufhdr;
+	uchar	b[Bungetsize+Bsize];
+};
+
+/* Dregs, redefined as functions for backwards compatibility */
+#define	BGETC(bp)	Bgetc(bp)
+#define	BPUTC(bp,c)	Bputc(bp,c)
+#define	BOFFSET(bp)	Boffset(bp)
+#define	BLINELEN(bp)	Blinelen(bp)
+#define	BFILDES(bp)	Bfildes(bp)
+
+int	Bbuffered(Biobufhdr*);
+int	Bfildes(Biobufhdr*);
+int	Bflush(Biobufhdr*);
+int	Bgetc(Biobufhdr*);
+//int	Bgetd(Biobufhdr*, double*);
+long	Bgetrune(Biobufhdr*);
+int	Binit(Biobuf*, int, int);
+int	Binits(Biobufhdr*, int, int, uchar*, int);
+int	Blinelen(Biobufhdr*);
+vlong	Boffset(Biobufhdr*);
+Biobuf*	Bopen(char*, int);
+int	Bprint(Biobufhdr*, char*, ...);
+int	Bvprint(Biobufhdr*, char*, va_list);
+int	Bputc(Biobufhdr*, int);
+int	Bputrune(Biobufhdr*, long);
+void*	Brdline(Biobufhdr*, int);
+char*	Brdstr(Biobufhdr*, int, int);
+long	Bread(Biobufhdr*, void*, long);
+vlong	Bseek(Biobufhdr*, vlong, int);
+int	Bterm(Biobufhdr*);
+int	Bungetc(Biobufhdr*);
+int	Bungetrune(Biobufhdr*);
+long	Bwrite(Biobufhdr*, void*, long);
+
+#pragma	varargck	argpos	Bprint	2
+
+#endif
--- /sys/src/ape/lib/9/libc.h	Tue May 28 17:31:35 2013
+++ /sys/src/ape/lib/9/libc.h	Tue May 28 17:31:35 2013
@@ -135,6 +135,7 @@
 #endif
 
 /* we don't have fauth(), so let this slide */
+#define seek(fd, off, dir)	lseek(fd, off, dir)
 #define	fauth _FAUTH
 /* neither iounit */
 #define iounit	_IOUNIT