mirror of
https://github.com/morgan9e/systemd
synced 2026-04-14 16:37:19 +09:00
4d6437d33c
It's great that we provide fallback values, but if we got one of those wrong,
it could be a long time before anyone noticed. So let's add asserts that the
our internal defines actually match the official ones, when the latter are
available.
I did not add '#include "macro.h"' to missing_{audit,capability}, because
those are processed by an awk script that would need additional include
directories and could be confused by the additional lines. We don't include
those headers standalone anyway, so this is not necessary anyway.
92 lines
1.7 KiB
C
92 lines
1.7 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#if HAVE_LINUX_IOPRIO_H
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# include <linux/ioprio.h>
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#endif
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#include "macro.h"
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/* Match values uses by the kernel internally, as no public header seems to exist. */
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#ifndef IOPRIO_N_CLASSES
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# define IOPRIO_N_CLASSES 8
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#else
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assert_cc(IOPRIO_N_CLASSES == 8);
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#endif
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#ifndef IOPRIO_BE_NR
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# define IOPRIO_BE_NR 8
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#else
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assert_cc(IOPRIO_BE_NR == 8);
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#endif
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#ifndef IOPRIO_CLASS_NONE
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# define IOPRIO_CLASS_NONE 0
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#else
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assert_cc(IOPRIO_CLASS_NONE == 0);
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#endif
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#ifndef IOPRIO_CLASS_RT
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# define IOPRIO_CLASS_RT 1
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#else
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assert_cc(IOPRIO_CLASS_RT == 1);
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#endif
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#ifndef IOPRIO_CLASS_BE
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# define IOPRIO_CLASS_BE 2
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#else
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assert_cc(IOPRIO_CLASS_BE == 2);
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#endif
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#ifndef IOPRIO_CLASS_IDLE
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# define IOPRIO_CLASS_IDLE 3
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#else
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assert_cc(IOPRIO_CLASS_IDLE == 3);
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#endif
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#ifndef IOPRIO_WHO_PROCESS
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# define IOPRIO_WHO_PROCESS 1
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#else
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assert_cc(IOPRIO_WHO_PROCESS == 1);
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#endif
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#ifndef IOPRIO_WHO_PGRP
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# define IOPRIO_WHO_PGRP 2
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#else
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assert_cc(IOPRIO_WHO_PGRP == 2);
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#endif
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#ifndef IOPRIO_WHO_USER
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# define IOPRIO_WHO_USER 3
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#else
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assert_cc(IOPRIO_WHO_USER == 3);
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#endif
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#ifndef IOPRIO_BITS
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# define IOPRIO_BITS 16
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#else
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assert_cc(IOPRIO_BITS == 16);
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#endif
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#ifndef IOPRIO_N_CLASSES
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# define IOPRIO_N_CLASSES 8
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#else
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assert_cc(IOPRIO_N_CLASSES == 8);
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#endif
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#ifndef IOPRIO_CLASS_SHIFT
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# define IOPRIO_CLASS_SHIFT 13
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#else
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assert_cc(IOPRIO_CLASS_SHIFT == 13);
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#endif
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static inline int ioprio_prio_class(int value) {
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return value >> IOPRIO_CLASS_SHIFT;
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}
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static inline int ioprio_prio_data(int value) {
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return value & ((1 << IOPRIO_CLASS_SHIFT) - 1);
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}
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static inline int ioprio_prio_value(int class, int data) {
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return (class << IOPRIO_CLASS_SHIFT) | data;
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}
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