summaryrefslogtreecommitdiff
path: root/console/vcons.h
diff options
context:
space:
mode:
authorMarcus Brinkmann <marcus@gnu.org>2002-06-05 01:52:29 +0000
committerMarcus Brinkmann <marcus@gnu.org>2002-06-05 01:52:29 +0000
commit94d1c5884949b21303e66b80c00c1690ec0d9d60 (patch)
tree5a595fdd5f60ddbf15215db960afdb737ff6e943 /console/vcons.h
parent19e5de68bae6f5eb2296a1fb20ec51939db5087e (diff)
2002-06-05 Marcus Brinkmann <marcus@gnu.org>
* main.c: Include "vcons.h" instead "console.h". * focus.c: Likewise. * Makefile (LCLHDRS): Rename console.h to vcons.h. (SRCS): Rename console.c to vcons.c.
Diffstat (limited to 'console/vcons.h')
-rw-r--r--console/vcons.h98
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
@@ -0,0 +1,98 @@
+/* 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);