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2b76f48a17
The compiler can't see that the definitions inside the .h file aren't meant to be public symbols. So in a hypothetical program which uses the Kernel API, each(\!) compilation unit that includes FB.h would define those fb_get_size_in_bytes symbols. If that happens twice or more times, that would cause linker errors. Since the functions are very short, inlining them seems like a good idea. Also, using FB.h should be possible even if the containing compilation unit doesn't already define size_t, so I added that header (stddef), too.
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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* All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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 OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <AK/Platform.h>
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#include <stddef.h>
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#include <sys/cdefs.h>
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#include <sys/ioctl.h>
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__BEGIN_DECLS
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ALWAYS_INLINE int fb_get_size_in_bytes(int fd, size_t* out)
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{
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return ioctl(fd, FB_IOCTL_GET_SIZE_IN_BYTES, out);
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}
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ALWAYS_INLINE int fb_get_resolution(int fd, FBResolution* info)
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{
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return ioctl(fd, FB_IOCTL_GET_RESOLUTION, info);
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}
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ALWAYS_INLINE int fb_set_resolution(int fd, FBResolution* info)
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{
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return ioctl(fd, FB_IOCTL_SET_RESOLUTION, info);
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}
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ALWAYS_INLINE int fb_get_buffer(int fd, int* index)
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{
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return ioctl(fd, FB_IOCTL_GET_BUFFER, index);
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}
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ALWAYS_INLINE int fb_set_buffer(int fd, int index)
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{
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return ioctl(fd, FB_IOCTL_SET_BUFFER, index);
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}
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__END_DECLS
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