1 files changed, 6 insertions, 4 deletions

diff --git a/lib/libfetch/http.c b/lib/libfetch/http.c
index fc43a97fbdb1..676cbb76d960 100644
--- a/lib/libfetch/http.c
+++ b/lib/libfetch/http.c
@@ -204,7 +204,7 @@ http_growbuf(struct httpio *io, size_t len)
 /*
  * Fill the input buffer, do chunk decoding on the fly
  */
-static int
+static ssize_t
 http_fillbuf(struct httpio *io, size_t len)
 {
 	ssize_t nbytes;
@@ -230,7 +230,7 @@ http_fillbuf(struct httpio *io, size_t len)
 	if (io->chunksize == 0) {
 		switch (http_new_chunk(io)) {
 		case -1:
-			io->error = 1;
+			io->error = EPROTO;
 			return (-1);
 		case 0:
 			io->eof = 1;
@@ -276,10 +276,12 @@ http_readfn(void *v, char *buf, int len)
 
 	/* empty buffer */
 	if (!io->buf || io->bufpos == io->buflen) {
-		if (http_fillbuf(io, len) < 1) {
-			if (io->error == EINTR)
+		if ((rlen = http_fillbuf(io, len)) < 0) {
+			if ((errno = io->error) == EINTR)
 				io->error = 0;
 			return (-1);
+		} else if (rlen == 0) {
+			return (0);
 		}
 	}