hare

commit 1de08b592900661043dd23f662ded0e71b40a11a
parent c38a359051ac8b953fd0ec2b60205854ca737462
Author: Drew DeVault <sir@cmpwn.com>
Date:   Tue, 12 Apr 2022 09:58:54 +0200

errors: add eagain

Signed-off-by: Drew DeVault <sir@cmpwn.com>

Diffstat:
M
errors/common.ha
 | 
4
++++
M
errors/rt.ha
 | 
2
++
M
errors/string.ha
 | 
4
++++

3 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/errors/common.ha b/errors/common.ha
@@ -39,6 +39,9 @@ export type nomem = !void;
 // An operation was interrupted.
 export type interrupted = !void;
 
+// The user should attempt an operation again.
+export type again = !void;
+
 // A tagged union of all error types.
 export type error = !(
 	busy |
@@ -53,5 +56,6 @@ export type error = !(
 	refused |
 	nomem |
 	interrupted |
+	again |
 	opaque
 );
diff --git a/errors/rt.ha b/errors/rt.ha
@@ -26,6 +26,8 @@ export fn errno(errno: rt::errno) error = {
 		return busy;
 	case rt::EINTR =>
 		return interrupted;
+	case rt::EAGAIN =>
+		return again;
 	case => void;
 	};
 
diff --git a/errors/string.ha b/errors/string.ha
@@ -35,6 +35,10 @@ case refused =>
 	yield "A connection attempt was refused";
 case nomem =>
 	yield "Unable to allocate sufficient memory for the requested operation";
+case interrupted =>
+	yield "Operation interrupted";
+case again =>
+	yield "Try again";
 case let op: opaque =>
 	yield op.strerror(&op.data);
 };