Read and write slot keys and pages in full

xread and xwrite may move fewer bytes than asked. A short write of the
key left a slot that could never match, a short read of it reported a
collision, and a page write that moved nothing looped for ever.

1 file changed, 5 insertions, 1 deletion

diff --git a/source/html.c b/source/html.cindex ef74bb3..367cea7 100644--- a/source/html.c+++ b/source/html.c@@ -65,7 +65,11 @@ static void write_out(const char *data, size_t size) 	while (size) { 		ssize_t written = xwrite(STDOUT_FILENO, data, size); -		if (written < 0)+		// A write that moves nothing would repeat for ever, so it+		// counts as a full device, the way write_in_full treats it.+		if (!written)+			errno = ENOSPC;+		if (written <= 0) 			break; 		data += written; 		size -= written;
diff --git a/source/html.c b/source/html.c
index ef74bb3..367cea7 100644
--- a/source/html.c
+++ b/source/html.c
@@ -65,7 +65,11 @@ static void write_out(const char *data, size_t size)
 	while (size) {
 		ssize_t written = xwrite(STDOUT_FILENO, data, size);
 
-		if (written < 0)
+		// A write that moves nothing would repeat for ever, so it
+		// counts as a full device, the way write_in_full treats it.
+		if (!written)
+			errno = ENOSPC;
+		if (written <= 0)
 			break;
 		data += written;
 		size -= written;