Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
58 lines
1.6 KiB
Bash
Executable File
58 lines
1.6 KiB
Bash
Executable File
#!/bin/sh -efu
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# Copyright (c) 2018 Dmitry V. Levin <ldv@altlinux.org>
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# All rights reserved.
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#
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# SPDX-License-Identifier: LGPL-2.1-or-later
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input="$1"
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shift
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cat <<EOF
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/* Generated by $0 from $input; do not edit. */
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#include "defs.h"
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#ifdef HAVE_LINUX_BPF_H
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# include <linux/bpf.h>
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# include "bpf_attr.h"
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# include "static_assert.h"
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# define SoM(type_, member_) (sizeof(((type_ *)0)->member_))
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EOF
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for struct in $(sed -n 's/^struct \([^[:space:]]\+_struct\) .*/\1/p' < "$input"); do
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case "$struct" in
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BPF_*) type_name='union bpf_attr' ;;
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*) type_name="struct ${struct%_struct}" ;;
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esac
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TYPE_NAME="$(printf %s "$type_name" |tr '[:lower:] ' '[:upper:]_')"
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enum="$(sed -n 's/^struct '"$struct"' \/\* \([^[:space:]]\+\) \*\/ {.*/\1/p' < "$input")"
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ENUM="$(printf %s "$enum" |tr '[:lower:]' '[:upper:]')"
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enum="$enum${enum:+.}"
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ENUM="$ENUM${ENUM:+_}"
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sed -n '/^struct '"$struct"' [^{]*{/,/^};$/p' < "$input" |
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sed -n 's/^[[:space:]]\+[^][;]*[[:space:]]\([^][[:space:];]\+\)\(\[[^;]*\]\)\?;$/\1/p' |
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while read field; do
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FIELD="$(printf %s "$field" |tr '[:lower:]' '[:upper:]')"
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cat <<EOF
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# ifdef HAVE_${TYPE_NAME}_$ENUM$FIELD
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static_assert(SoM(struct $struct, $field) == SoM($type_name, $enum$field),
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"$struct.$field size mismatch");
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static_assert(offsetof(struct $struct, $field) == offsetof($type_name, $enum$field),
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"$struct.$field offset mismatch");
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# endif /* HAVE_${TYPE_NAME}_$ENUM$FIELD */
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EOF
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done
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cat <<EOF
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static_assert(${struct}_size == expected_${struct}_size,
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"${struct}_size mismatch");
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EOF
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done
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cat <<'EOF'
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#endif /* HAVE_LINUX_BPF_H */
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EOF
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