/// <summary>
/// Changes the current directory to newDir
/// </summary>
/// <param name="newDir">The new working directory</param>
/// <returns>Errorcode</returns>
public static ErrorCode ChDir(string newDir)
{
newDir = VFS.CreateAbsolutePath(newDir);
Node node = VFS.GetByAbsolutePath(newDir);
if (node == null)
{
Heap.Free(newDir);
return(ErrorCode.ENOENT);
}
if (node.Flags != NodeFlags.DIRECTORY)
{
Heap.Free(newDir);
Heap.Free(node);
return(ErrorCode.ENOTDIR);
}
Heap.Free(node);
// GetByAbsolutePath makes sure there's a slash on the end
Tasking.CurrentTask.CurrentDirectory = newDir;
return(ErrorCode.SUCCESS);
}
/// <summary>
/// Creates another process from an executable
/// </summary>
/// <param name="path">The path to the executable</param>
/// <param name="argv">The arguments</param>
/// <param name="envp">The environment path</param>
/// <returns>Errorcode</returns>
public static int Run(string path, string[] argv, string[] envp)
{
// TODO: envp
path = VFS.CreateAbsolutePath(path);
int pid = Loader.StartProcess(path, argv, Task.SpawnFlags.NONE);
Heap.Free(path);
return(pid);
}
/// <summary>
/// Replaces the current process with another executable
/// </summary>
/// <param name="path">The path to the executable</param>
/// <param name="argv">The arguments</param>
/// <param name="envp">The environment path</param>
/// <returns>Errorcode</returns>
public static int Execve(string path, string[] argv, string[] envp)
{
// TODO: envp
path = VFS.CreateAbsolutePath(path);
int error = Loader.StartProcess(path, argv, Task.SpawnFlags.SWAP_PID);
Heap.Free(path);
if (error < 0)
{
return(error);
}
// We spawned a task but the current process should actually be replaced
// So we must kill the current process
Tasking.RemoveTaskByPID(Tasking.CurrentTask.PID);
return(0);
}