1 files changed, 98 insertions, 0 deletions
diff --git a/console/vcons.h b/console/vcons.h
new file mode 100644
index 00000000..06c611da
--- /dev/null
+++ b/console/vcons.h
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+/* vcons.h - Interface for the device independant part of a virtual console.
+   Copyright (C) 2002 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. */
+
+#include <errno.h>
+#include <argp.h>
+#include <sys/types.h>
+#include <sys/ioctl.h>
+
+
+/* A handle for a console device.  */
+typedef struct cons *cons_t;
+
+/* A handle for a virtual console device.  */
+typedef struct vcons *vcons_t;
+
+
+/* Lookup the console with name NAME, acquire a reference for it, and
+   return it in R_CONS.  If NAME doesn't exist, return ESRCH.  */
+error_t cons_lookup (const char *name, cons_t *r_cons);
+
+/* Release a reference to CONS.  */
+void cons_release (cons_t cons);
+
+/* Lookup the virtual console with number ID in the console CONS,
+   acquire a reference for it, and return it in R_VCONS.  If CREATE is
+   true, the virtual console will be created if it doesn't exist yet.
+   If CREATE is true, and ID 0, the first free virtual console id is
+   used.  */
+error_t vcons_lookup (cons_t cons, int id, int create, vcons_t *r_vcons);
+
+/* Release a reference to the virtual console VCONS.  If this was the
+   last reference the virtual console is destroyed.  */
+void vcons_release (vcons_t vcons);
+
+
+/* Activate virtual console VCONS for WHO.  WHO is a unique identifier
+   for the entity requesting the activation (which can be used by the
+   display driver to group several activation requests together).  */
+void vcons_activate (vcons_t vcons, int who);
+
+/* Resume the output on the virtual console VCONS.  */
+void vcons_start_output (vcons_t vcons);
+
+/* Stop all output on the virtual console VCONS.  */
+void vcons_stop_output (vcons_t vcons);
+
+/* Return the number of pending output bytes for VCONS.  */
+size_t vcons_pending_output (vcons_t vcons);
+
+/* Fush the input buffer, discarding all pending data.  */
+void vcons_flush_input (vcons_t vcons);
+
+/* Fush the output buffer, discarding all pending data.  */
+void vcons_discard_output (vcons_t vcons);
+
+/* Add DATALEN bytes starting from DATA to the input queue in
+   VCONS.  */
+error_t vcons_input (vcons_t vcons, char *data, size_t datalen);
+
+/* Output DATALEN characters from the buffer DATA on the virtual
+   console VCONS.  The DATA must be supplied in the system encoding
+   configured for VCONS.  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 vcons_output (vcons_t vcons, int nonblock, char *data, size_t datalen);
+
+/* Hang interruptible until one of the conditions in TYPE is
+   fulfilled.  Return the conditions fulfilled in TYPE.  */
+error_t vcons_select (vcons_t vcons, int *type);
+
+/* Return the dimension of the virtual console VCONS in WINSIZE.  */
+void vcons_getsize (vcons_t vcons, struct winsize *winsize);
+
+/* Set the owner of the virtual console VCONS to PID.  The owner
+   receives the SIGWINCH signal when the terminal size changes.  */
+error_t vcons_set_owner (vcons_t vcons, pid_t pid);
+
+/* Return the owner of the virtual console VCONS in PID.  If there is
+   no owner, return ENOTTY.  */
+error_t vcons_get_owner (vcons_t vcons, pid_t *pid);