From 23af4ccdab68fa7cf300dea1cf17c9a09a7370bf Mon Sep 17 00:00:00 2001
From: antifallobst <antifallobst@systemausfall.org>
Date: Tue, 2 May 2023 18:07:31 +0200
Subject: [PATCH] feature (syscalls): changed 'nx_fread' and 'nx_fwrite' to
 match updated sysabi

---
 src/platform/syscall.c | 23 +++++------------------
 1 file changed, 5 insertions(+), 18 deletions(-)

diff --git a/src/platform/syscall.c b/src/platform/syscall.c
index bccc3a5..3e3800e 100644
--- a/src/platform/syscall.c
+++ b/src/platform/syscall.c
@@ -44,28 +44,23 @@ void syscall_handle_nx_fread(cpu_state_T* state) {
         case FILE_DESCRIPTOR_INVALID:
         case FILE_DESCRIPTOR_STDOUT:
         case FILE_DESCRIPTOR_STDERR: {
-            state->rax = STATUS_RESOURCE_NOT_AVAILABLE;
             break;
         }
 
         case FILE_DESCRIPTOR_STDIN: {
             read_bytes = pipe_read(&process->stdin, mem, n);
-            state->rax = STATUS_SUCCESS;
             break;
         }
 
         default: {
             vfs_node_T* node = file_descriptor_resolve(scheduler_get_current_process()->fd_array, fd);
 
-            // TODO: set read_bytes
-
-            vfs_file_read(node, offset, n, mem);
-
-            state->rax = STATUS_SUCCESS;
+            read_bytes = vfs_file_read(node, offset, n, mem);
             break;
         }
     }
-    // TODO: return read_bytes to process
+
+    state->rax = read_bytes;
 }
 
 void syscall_handle_nx_fwrite(cpu_state_T* state) {
@@ -80,7 +75,6 @@ void syscall_handle_nx_fwrite(cpu_state_T* state) {
     switch (fd) {
         case FILE_DESCRIPTOR_INVALID:
         case FILE_DESCRIPTOR_STDIN: {
-            state->rax = STATUS_RESOURCE_NOT_AVAILABLE;
             break;
         }
 
@@ -88,8 +82,6 @@ void syscall_handle_nx_fwrite(cpu_state_T* state) {
             if (process->stderr != NULL) {
                 written_bytes = pipe_write(process->stderr, mem, n);
             }
-
-            state->rax = STATUS_SUCCESS;
             break;
         }
 
@@ -97,23 +89,18 @@ void syscall_handle_nx_fwrite(cpu_state_T* state) {
             if (process->stdout != NULL) {
                 written_bytes = pipe_write(process->stdout, mem, n);
             }
-
-            state->rax = STATUS_SUCCESS;
             break;
         }
 
         default: {
             vfs_node_T* node = file_descriptor_resolve(scheduler_get_current_process()->fd_array, fd);
 
-            // TODO: set written_bytes
-
-            vfs_file_write(node, offset, n, mem);
-            state->rax = STATUS_SUCCESS;
+            written_bytes = vfs_file_write(node, offset, n, mem);
             break;
         }
     }
 
-    // TODO: return written_bytes to process
+    state->rax = written_bytes;
 }
 
 void syscall_handle_nx_fdelete(cpu_state_T* state) {