70 lines
2.6 KiB
C
70 lines
2.6 KiB
C
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/*
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* Copyright (c) 1993 Christian E. Hopps
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Christian E. Hopps.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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/* The view major device is a placeholder device. It serves
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* simply to map the semantics of a graphics dipslay to
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* the semantics of a character block device. In other
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* words the graphics system as currently built does not like to be
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* refered to by open/close/ioctl. This device serves as
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* a interface to graphics. */
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struct view_softc {
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struct view_size size;
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view_t *view;
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dmode_t *mode;
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monitor_t *monitor;
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pid_t lock_process;
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int flags;
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};
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enum view_unit_flag_bits {
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VUB_OPEN,
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VUB_ADDED,
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VUB_DISPLAY,
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VUB_LAST_BIT
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};
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enum view_unit_flags {
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VUF_OPEN = 1<<VUB_OPEN,
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VUF_ADDED = 1<<VUB_ADDED,
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VUF_DISPLAY = 1<<VUB_DISPLAY,
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VUF_MASK = ((1<<VUB_LAST_BIT)-1)
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};
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