Added userspace-based network timeout

The network in my whole city is down right now, so I've done some
error catching using timeouts etc without the kernel blocking
everything. Not having internet is exhausting though :(

1 files changed, 7 insertions, 6 deletions

diff --git a/kernel/features/syscall.c b/kernel/features/syscall.c
index 3d70dbb..01720c5 100644
--- a/kernel/features/syscall.c
+++ b/kernel/features/syscall.c
@@ -111,7 +111,13 @@ void syscall_handler(struct regs *r)
 		break;
 	}
 	case SYS_NET_CONNECT: {
-		r->eax = net_connect((void *)r->ebx, r->ecx, r->edx);
+		struct socket *s = (void *)r->ebx;
+		if (s->state == S_CONNECTED)
+			r->eax = 1;
+		else if (s->state == S_FAILED || s->state == S_CLOSED)
+			r->eax = 0;
+		else if (s->state == S_OPEN)
+			r->eax = net_connect(s, r->ecx, r->edx);
 		break;
 	}
 	case SYS_NET_SEND: {
@@ -119,11 +125,6 @@ void syscall_handler(struct regs *r)
 		break;
 	}
 	case SYS_NET_RECEIVE: {
-		if (!net_data_available((void *)r->ebx)) {
-			proc_current()->state = PROC_SLEEPING;
-			proc_yield(r);
-			return;
-		}
 		r->eax = net_receive((void *)r->ebx, (void *)r->ecx, r->edx);
 		break;
 	}