1 files changed, 29 insertions, 0 deletions
diff --git a/src/libbio/bputc.c b/src/libbio/bputc.c
new file mode 100644
index 00000000..5f0fba59
--- /dev/null
+++ b/src/libbio/bputc.c
@@ -0,0 +1,29 @@
+#include	"lib9.h"
+#include	<bio.h>
+
+int
+Bputc(Biobuf *bp, int c)
+{
+	int i, j;
+
+loop:
+	i = bp->ocount;
+	j = i+1;
+	if(i != 0) {
+		bp->ocount = j;
+		bp->ebuf[i] = c;
+		return 0;
+	}
+	if(bp->state != Bwactive)
+		return Beof;
+	j = write(bp->fid, bp->bbuf, bp->bsize);
+	if(j == bp->bsize) {
+		bp->ocount = -bp->bsize;
+		bp->offset += j;
+		goto loop;
+	}
+	fprint(2, "Bputc: write error\n");
+	bp->state = Binactive;
+	bp->ocount = 0;
+	return Beof;
+}