check against plan 9

src/libbio/bgetc.c

@@ -26,6 +26,7 @@ loop:
 	i = read(bp->fid, bp->bbuf, bp->bsize);
 	bp->gbuf = bp->bbuf;
 	if(i <= 0) {
+		bp->state = Bracteof;
 		if(i < 0)
 			bp->state = Binactive;
 		return Beof;

src/libbio/binit.c

@@ -61,7 +61,7 @@ Binits(Biobuf *bp, int f, int mode, unsigned char *p, int size)
 	p += Bungetsize;	/* make room for Bungets */
 	size -= Bungetsize;
 
-	switch(mode) {
+	switch(mode&~(OCEXEC|ORCLOSE|OTRUNC)) {
 	default:
 		fprint(2, "Bopen: unknown mode %d\n", mode);
 		return Beof;
@@ -86,7 +86,7 @@ Binits(Biobuf *bp, int f, int mode, unsigned char *p, int size)
 	bp->flag = 0;
 	bp->rdline = 0;
 	bp->offset = 0;
-/*	bp->runesize = 0; */
+	bp->runesize = 0;
 	return 0;
 }
 
@@ -116,7 +116,7 @@ Bopen(char *name, int mode)
 	Biobuf *bp;
 	int f;
 
-	switch(mode) {
+	switch(mode&~(OCEXEC|ORCLOSE|OTRUNC)) {
 	default:
 		fprint(2, "Bopen: unknown mode %d\n", mode);
 		return 0;

src/libbio/bputc.c

@@ -4,26 +4,17 @@
 int
 Bputc(Biobuf *bp, int c)
 {
-	int i, j;
+	int i;
 
-loop:
-	i = bp->ocount;
-	j = i+1;
-	if(i != 0) {
-		bp->ocount = j;
-		bp->ebuf[i] = c;
-		return 0;
+	for(;;) {
+		i = bp->ocount;
+		if(i) {
+			bp->ebuf[i++] = c;
+			bp->ocount = i;
+			return 0;
+		}
+		if(Bflush(bp) == Beof)
+			break;
 	}
-	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;
 }

src/libbio/lib9.std.h

@@ -9,6 +9,11 @@
 #define OREAD		O_RDONLY
 #define OWRITE	O_WRONLY
 
+#define	OCEXEC 0
+#define	ORCLOSE	0
+#define	OTRUNC	0
+
+
 #define nil ((void*)0)
 
 typedef long long vlong;