/// <summary>
/// Opens a file
/// </summary>
/// <param name="path">The path</param>
/// <param name="flags">The flags</param>
/// <returns>The file descriptor ID</returns>
public static int Open(string path, int flags)
{
if (path.Length == 0)
{
return(-(int)ErrorCode.EINVAL);
}
Node node = null;
// Check if O_CREATE
if ((flags & 0x0200) > 0)
{
node = VFS.GetOffsetNodeByPath(path, 1);
node = VFS.Create(node, "test");
if (node == null)
{
return(-(int)ErrorCode.ENOENT);
}
}
else
{
node = VFS.GetByPath(path);
if (node == null)
{
return(-(int)ErrorCode.ENOENT);
}
VFS.Open(node, flags);
}
FileDescriptors descriptors = Tasking.CurrentTask.FileDescriptors;
return(descriptors.AddNode(node));
}
/// <summary>
/// Truncates a file by path
/// </summary>
/// <param name="path">The path of the file to truncate</param>
/// <param name="length">The length to truncate to</param>
/// <returns>Errorcode</returns>
public static int Truncate(string path, uint length)
{
Node node = VFS.GetByPath(path);
if (node == null)
{
return(-(int)ErrorCode.ENOENT);
}
VFS.Truncate(node, length);
Heap.Free(node);
return(0);
}
/// <summary>
/// Gets the file status of a path
/// </summary>
/// <param name="path">The path</param>
/// <param name="st">The stat structure</param>
/// <returns>The errorcode</returns>
public static unsafe ErrorCode Stat(string path, Stat *st)
{
Node node = VFS.GetByPath(path);
if (node == null)
{
return(ErrorCode.ENOENT);
}
node.Stat(st);
Heap.Free(node);
return(ErrorCode.SUCCESS);
}