From 63e5017d9863d4ed215782e469e8ee2c6ff8473d Mon Sep 17 00:00:00 2001
From: Miguel <m.i@gmx.at>
Date: Tue, 9 Oct 2018 16:21:32 +0200
Subject: fix pipers

---
 kernel/syscalls.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'kernel/syscalls.c')

diff --git a/kernel/syscalls.c b/kernel/syscalls.c
index 8ff6241..d579dc3 100644
--- a/kernel/syscalls.c
+++ b/kernel/syscalls.c
@@ -198,6 +198,7 @@ int syscall_write(int file, char *buf, int len,uint32_t pid)
     if(!open_fd[pid][file])kpanic("writing to closed file descriptor");
     for(int i=0;i<len;i++)
     {
+        if(!fd_can_write(&fds[pid][file]))return i;
 	fd_write(&fds[pid][file],buf[i]);
     }
     return len;
@@ -432,7 +433,7 @@ uint32_t syscall_dup2(uint32_t oldfd,int newfd, int none2, uint32_t pid)
 }
 uint32_t syscall_gui_rect(uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid)
 {
-    compositor_swap_buffers();
+    compositor_wake();
     return 1;
 }
 uint32_t syscall_gui_win(uint32_t p1, uint32_t p2, uint32_t p3, uint32_t pid)
@@ -449,6 +450,8 @@ uint32_t syscall_generic_test(uint32_t nr,uint32_t p1, uint32_t p2, uint32_t p3,
 	    return !task_runs(p1);
 	case SYSCALL_READ :
 	    return fd_has(&fds[pid][p1])||fd_eof(&fds[pid][p1]);
+	case SYSCALL_WRITE :
+            return fd_can_write(&fds[pid][p1]);
     }
 
     return 1;//other syscalls never block for now.
-- 
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