1 files changed, 84 insertions, 0 deletions
diff --git a/console/display.h b/console/display.h
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index 00000000..d64cf69e
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+++ b/console/display.h
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+/* display.h - Interface to the display component of a virtual console.
+   Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+   Written by Marcus Brinkmann.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   The GNU Hurd is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111, USA. */
+
+#ifndef DISPLAY_H
+#define DISPLAY_H
+
+#include <sys/ioctl.h>
+
+struct display;
+typedef struct display *display_t;
+
+void display_init (void);
+
+/* Create a new virtual console display, with the system encoding
+   being ENCODING and the default colors being FOREGROUND and BACKGROUND.  */
+error_t
+display_create (display_t *r_display, const char *encoding,
+		conchar_attr_t def_attr, unsigned int lines,
+		unsigned int width, unsigned int height);
+
+
+/* Destroy the display DISPLAY.  */
+void display_destroy (display_t display);
+
+/* Return the dimension of the display in bytes.  */
+off_t display_get_size (display_t display);
+
+/* Return the dimensions of the display DISPLAY in *WINSIZE.  */
+void display_getsize (display_t display, struct winsize *winsize);
+
+/* Set the owner of the display DISPLAY to PID.  The owner receives
+   the SIGWINCH signal when the terminal size changes.  */
+error_t display_set_owner (display_t display, pid_t pid);
+
+/* Return the owner of the display DISPLAY in PID.  If there is no
+   owner, return ENOTTY.  */
+error_t display_get_owner (display_t display, pid_t *pid);
+
+/* Output DATALEN characters from the buffer DATA on display DISPLAY.
+   The DATA must be supplied in the system encoding configured for
+   DISPLAY.  The function returns the amount of bytes written (might
+   be smaller than DATALEN) or -1 and the error number in errno.  If
+   NONBLOCK is not zero, return with -1 and set errno to EWOULDBLOCK
+   if operation would block for a long time.  */
+ssize_t display_output (display_t display, int nonblock, char *data,
+			size_t datalen);
+
+mach_port_t display_get_filemap (display_t display, vm_prot_t prot);
+
+ssize_t display_read (display_t display, int nonblock, off_t off,
+		      char *data, size_t len);
+
+error_t display_notice_changes (display_t display, mach_port_t notify);
+
+/* Resume the output on the display DISPLAY.  */
+void display_start_output (display_t display);
+
+/* Stop all output on the display DISPLAY.  */
+void display_stop_output (display_t display);
+
+/* Return the number of pending output bytes for DISPLAY.  */
+size_t display_pending_output (display_t display);
+
+/* Flush the output buffer, discarding all pending data.  */
+void display_discard_output (display_t display);
+
+#endif	/* DISPLAY_H */