hare

commit c00757a14ba6d25cf3f38028557d299edef8d5eb
parent 825ffee3ec68e8d65f4075cd5a6fe32b1617319e
Author: Ember Sawady <ecs@d2evs.net>
Date:   Wed,  7 Jun 2023 08:19:02 +0000

io+linux::fd_copy: simplify

Signed-off-by: Ember Sawady <ecs@d2evs.net>

Diffstat:
M
io/+linux/file.ha
 | 
26
+++++++-------------------

1 file changed, 7 insertions(+), 19 deletions(-)
diff --git a/io/+linux/file.ha b/io/+linux/file.ha
@@ -67,26 +67,14 @@ def SENDFILE_MAX: size = 2147479552z;
 
 fn fd_copy(to: file, from: file) (size | error) = {
 	let sum = 0z;
-	for (true) {
-		let n = match (rt::sendfile(to, from, null, SENDFILE_MAX)) {
-		case let err: rt::errno =>
-			switch (err) {
-			case rt::EINVAL =>
-				if (sum == 0) {
-					return errors::unsupported;
-				};
-				return errors::errno(err);
-			case =>
-				return errors::errno(err);
-			};
-		case let n: size =>
-			yield switch (n) {
-			case 0 =>
-				break;
-			case =>
-				yield n;
-			};
+	for (true) match (rt::sendfile(to, from, null, SENDFILE_MAX)) {
+	case let err: rt::errno =>
+		if (err == rt::EINVAL && sum == 0) {
+			return errors::unsupported;
 		};
+		return errors::errno(err);
+	case let n: size =>
+		if (n == 0) break;
 		sum += n;
 	};
 	return sum;