old vfs fixes

1 files changed, 29 insertions, 3 deletions

diff --git a/kernel/fs/vnode_specials.c b/kernel/fs/vnode_specials.c
index cd21549..3e55830 100644
--- a/kernel/fs/vnode_specials.c
+++ b/kernel/fs/vnode_specials.c
@@ -110,7 +110,21 @@ static long special_file_stat(vnode_t *file, stat_t *ss)
 static ssize_t chardev_file_read(vnode_t *file, size_t pos, void *buf,
                                  size_t count)
 {
-    NOT_YET_IMPLEMENTED("VFS: chardev_file_read");
+    // NOT_YET_IMPLEMENTED("VFS: chardev_file_read");
+
+    // check if the vnode represetns a chardev
+    if (file->vn_dev.chardev == NULL)
+    {
+        return -ENXIO;
+    }
+
+    // Unlock the file and call read
+    vunlock(file);
+    ssize_t ret = file->vn_dev.chardev->cd_ops->read(file->vn_dev.chardev, pos, buf, count);
+    vlock(file);
+
+    return ret;
+
     return 0;
 }
 
@@ -125,8 +139,20 @@ static ssize_t chardev_file_read(vnode_t *file, size_t pos, void *buf,
 static long chardev_file_write(vnode_t *file, size_t pos, const void *buf,
                                size_t count)
 {
-    NOT_YET_IMPLEMENTED("VFS: chardev_file_write");
-    return 0;
+    // NOT_YET_IMPLEMENTED("VFS: chardev_file_write");
+
+    // check if the vnode represents a chardev
+    if (file->vn_dev.chardev == NULL)
+    {
+        return -ENXIO;
+    }
+
+    // Unlock the file and call write
+    vunlock(file);
+    long ret = file->vn_dev.chardev->cd_ops->write(file->vn_dev.chardev, pos, buf, count);
+    vlock(file);
+
+    return ret;
 }
 
 /*