shithub: riscv

Info  •  Files  •  Log  •  Branches

devmnt: deal with partial response for Tversion request in mntversion()

--- a/sys/src/9/port/devmnt.c

+++ b/sys/src/9/port/devmnt.c

@@ -164,7 +164,6 @@

 	unlock(c);

 	l = devtab[c->type]->write(c, msg, k, oo);

-

 	if(l < k){

 		lock(c);

 		c->offset -= k - l;

@@ -173,13 +172,14 @@

 	}

 	/* message sent; receive and decode reply */

-	k = devtab[c->type]->read(c, msg, 8192+IOHDRSZ, c->offset);

-	if(k <= 0)

-		error("EOF receiving fversion reply");

-

-	lock(c);

-	c->offset += k;

-	unlock(c);

+	for(k = 0; k < BIT32SZ || (k < GBIT32(msg) && k < 8192+IOHDRSZ); k += l){

+		l = devtab[c->type]->read(c, msg+k, 8192+IOHDRSZ-k, c->offset);

+		if(l <= 0)

+			error("EOF receiving fversion reply");

+		lock(c);

+		c->offset += l;

+		unlock(c);

+	}

 	l = convM2S(msg, k, &f);

 	if(l != k)