noux: Enable setting of file handle flags

Fixes #1765

repos/os/include/vfs/vfs_handle.h

@@ -58,6 +58,8 @@ class Vfs::Vfs_handle
 
 		int status_flags() const { return _status_flags; }
 
+		void status_flags(int flags) { _status_flags = flags; }
+
 		/**
 		 * Return seek offset in bytes
 		 */

repos/ports/src/noux/vfs_io_channel.h

@@ -109,6 +109,10 @@ namespace Noux {
 				sysio->fcntl_out.result = _fh->status_flags();
 				return true;
 
+			case Sysio::FCNTL_CMD_SET_FILE_STATUS_FLAGS:
+				_fh->status_flags(sysio->fcntl_in.long_arg);
+				return true;
+
 			default:
 
 				PWRN("invalid fcntl command %d", sysio->fcntl_in.cmd);