diff options
author | Marcus Brinkmann <marcus@gnu.org> | 2002-06-05 01:52:29 +0000 |
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committer | Marcus Brinkmann <marcus@gnu.org> | 2002-06-05 01:52:29 +0000 |
commit | 94d1c5884949b21303e66b80c00c1690ec0d9d60 (patch) | |
tree | 5a595fdd5f60ddbf15215db960afdb737ff6e943 /console/vcons.h | |
parent | 19e5de68bae6f5eb2296a1fb20ec51939db5087e (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.h | 98 |
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); |