Import sources from 2011-03-30 iso image

1 files changed, 21 insertions, 0 deletions

diff --git a/sys/src/libbio/bbuffered.c b/sys/src/libbio/bbuffered.c
new file mode 100755
index 000000000..1b2bdbe09
--- /dev/null
+++ b/sys/src/libbio/bbuffered.c
@@ -0,0 +1,21 @@
+#include	<u.h>
+#include	<libc.h>
+#include	<bio.h>
+
+int
+Bbuffered(Biobufhdr *bp)
+{
+	switch(bp->state) {
+	case Bracteof:
+	case Bractive:
+		return -bp->icount;
+
+	case Bwactive:
+		return bp->bsize + bp->ocount;
+
+	case Binactive:
+		return 0;
+	}
+	fprint(2, "Bbuffered: unknown state %d\n", bp->state);
+	return 0;
+}