a3509bac24
* gen_bpf_attr_check.sh: Ignore field array size definition. * m4/gen_bpf_attr_m4.sh (filter_entries): Likewise. Co-Authored-by: Dmitry V. Levin <ldv@altlinux.org>
72 lines
2.7 KiB
Bash
Executable File
72 lines
2.7 KiB
Bash
Executable File
#!/bin/sh -efu
|
|
# Copyright (c) 2018 Dmitry V. Levin <ldv@altlinux.org>
|
|
# All rights reserved.
|
|
#
|
|
# Redistribution and use in source and binary forms, with or without
|
|
# modification, are permitted provided that the following conditions
|
|
# are met:
|
|
# 1. Redistributions of source code must retain the above copyright
|
|
# notice, this list of conditions and the following disclaimer.
|
|
# 2. Redistributions in binary form must reproduce the above copyright
|
|
# notice, this list of conditions and the following disclaimer in the
|
|
# documentation and/or other materials provided with the distribution.
|
|
# 3. The name of the author may not be used to endorse or promote products
|
|
# derived from this software without specific prior written permission.
|
|
#
|
|
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
input="$1"
|
|
shift
|
|
|
|
cat <<EOF
|
|
/* Generated by $0 from $input; do not edit. */
|
|
#include "defs.h"
|
|
#ifdef HAVE_LINUX_BPF_H
|
|
# include <linux/bpf.h>
|
|
# include "bpf_attr.h"
|
|
# include "static_assert.h"
|
|
|
|
# define SoM(type_, member_) (sizeof(((type_ *)0)->member_))
|
|
EOF
|
|
|
|
for struct in $(sed -n 's/^struct \(BPF_[^[:space:]]\+_struct\) .*/\1/p' < "$input"); do
|
|
enum="$(sed -n 's/^struct '"$struct"' \/\* \([^[:space:]]\+\) \*\/ {.*/\1/p' < "$input")"
|
|
ENUM="$(printf %s "$enum" |tr '[:lower:]' '[:upper:]')"
|
|
enum="$enum${enum:+.}"
|
|
ENUM="$ENUM${ENUM:+_}"
|
|
sed -n '/^struct '"$struct"' [^{]*{/,/^};$/p' < "$input" |
|
|
sed -n 's/^[[:space:]]\+[^][;]*[[:space:]]\([^][[:space:];]\+\)\(\[[^;]*\]\)\?;$/\1/p' |
|
|
while read field; do
|
|
FIELD="$(printf %s "$field" |tr '[:lower:]' '[:upper:]')"
|
|
cat <<EOF
|
|
|
|
# ifdef HAVE_UNION_BPF_ATTR_$ENUM$FIELD
|
|
static_assert(SoM(struct $struct, $field) == SoM(union bpf_attr, $enum$field),
|
|
"$struct.$field size mismatch");
|
|
static_assert(offsetof(struct $struct, $field) == offsetof(union bpf_attr, $enum$field),
|
|
"$struct.$field offset mismatch");
|
|
# endif /* HAVE_UNION_BPF_ATTR_$ENUM$FIELD */
|
|
EOF
|
|
done
|
|
cat <<EOF
|
|
|
|
static_assert(${struct}_size == expected_${struct}_size,
|
|
"${struct}_size mismatch");
|
|
EOF
|
|
|
|
done
|
|
|
|
cat <<'EOF'
|
|
|
|
#endif /* HAVE_LINUX_BPF_H */
|
|
EOF
|