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/interrupts.c | 2 +-
 kernel/ringbuffer.c | 7 ++++++-
 kernel/scheduler.c  | 2 +-
 kernel/syscalls.c   | 5 ++++-
 4 files changed, 12 insertions(+), 4 deletions(-)

(limited to 'kernel')

diff --git a/kernel/interrupts.c b/kernel/interrupts.c
index aed1a50..2ab1490 100644
--- a/kernel/interrupts.c
+++ b/kernel/interrupts.c
@@ -80,7 +80,7 @@ uint32_t interrupt_handler(uint32_t esp, uint32_t irq)
     {
         if(cpu==0)
         {
-            compositor_wake();
+            compositor_wake2();
             scheduler_wake_worker(esp);
         }
     }
diff --git a/kernel/ringbuffer.c b/kernel/ringbuffer.c
index 3886340..3526f4d 100644
--- a/kernel/ringbuffer.c
+++ b/kernel/ringbuffer.c
@@ -1,5 +1,6 @@
 #include "ringbuffer.h"
 #include "kmalloc.h"
+#include "log.h"
 
 ringbuffer ringbuffer_init(uint32_t size)
 {
@@ -37,7 +38,11 @@ bool ringbuffer_has(ringbuffer* f)
 
 bool ringbuffer_put(ringbuffer* f,uint8_t c)
 {
-    if(ringbuffer_full(f))return false;
+    if(ringbuffer_full(f))
+    {
+        klog("ringbuffer is full!");
+        return false; 
+    }
 
     f->data[f->back]=c;
     f->back--;
diff --git a/kernel/scheduler.c b/kernel/scheduler.c
index 12c4ffd..bddd705 100644
--- a/kernel/scheduler.c
+++ b/kernel/scheduler.c
@@ -346,7 +346,7 @@ void task_syscall_worker()
         wake_mouse|=mouse_worker();
 	//x86_sti();
 
-        //if(wake_mouse)
+        if(wake_mouse)compositor_wake();
             compositor_swap_buffers();
 	if(wake)scheduler_wake_all();
 
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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