Commit b69ae1a3 authored by Dmitry Chagin's avatar Dmitry Chagin
Browse files

libsysdecode: Add preliminary support for decoding Linux syscalls

Differential revision:	https://reviews.freebsd.org/D35354
MFC after:		2 weeks
parent 9dac6096
......@@ -5,6 +5,10 @@
LIB= sysdecode
SRCS= errno.c flags.c ioctl.c signal.c syscallnames.c utrace.c support.c
.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
${MACHINE_CPUARCH} == "i386"
SRCS+= linux.c
.endif
INCS= sysdecode.h
CFLAGS+= -I${.OBJDIR}
......@@ -106,7 +110,7 @@ MLINKS+=sysdecode_mask.3 sysdecode_accessmode.3 \
sysdecode_mask.3 sysdecode_wait4_options.3 \
sysdecode_mask.3 sysdecode_wait6_options.3
CLEANFILES= ioctl.c ioctl.c.tmp tables.h
CLEANFILES= ioctl.c ioctl.c.tmp tables.h tables_linux.h
.if defined(COMPAT_32BIT)
CPP+= -m32
......@@ -121,9 +125,11 @@ CFLAGS.gcc.ioctl.c+= -Wno-redundant-decls
CFLAGS.gcc+= ${CFLAGS.gcc.${.IMPSRC}}
DEPENDOBJS+= tables.h
DEPENDOBJS+= tables.h tables_linux.h
tables.h: mktables
sh ${.CURDIR}/mktables ${SYSROOT:U${DESTDIR}}${INCLUDEDIR} ${.TARGET}
tables_linux.h: mklinuxtables
sh ${.CURDIR}/mklinuxtables ${SRCTOP}/sys ${.TARGET}
# mkioctls runs find(1) for headers so needs to rebuild every time. This used
# to be a hack only done in buildworld.
......@@ -139,7 +145,7 @@ ioctl.c: ioctl.c.tmp
mv -f ${.TARGET}.tmp ${.TARGET}; \
fi
beforedepend: ioctl.c tables.h
beforedepend: ioctl.c tables.h tables_linux.h
HAS_TESTS=
SUBDIR.${MK_TESTS}+= tests
......
/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.orf>
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/proc.h>
#include <stdbool.h>
#include <stdio.h>
#include <sysdecode.h>
#include "support.h"
#ifdef __aarch64__
#include <arm64/linux/linux.h>
#elif __i386__
#include <i386/linux/linux.h>
#elif __amd64__
#ifdef COMPAT_32BIT
#include <amd64/linux32/linux.h>
#else
#include <amd64/linux/linux.h>
#endif
#else
#error "Unsupported Linux arch"
#endif
#include <compat/linux/linux.h>
#include <compat/linux/linux_timer.h>
#define X(a,b) { a, #b },
#define XEND { 0, NULL }
#define TABLE_START(n) static struct name_table n[] = {
#define TABLE_ENTRY X
#define TABLE_END XEND };
#include "tables_linux.h"
#undef TABLE_START
#undef TABLE_ENTRY
#undef TABLE_END
void
sysdecode_linux_clockid(FILE *fp, clockid_t which)
{
const char *str;
clockid_t ci;
pid_t pid;
if (which >= 0) {
str = lookup_value(clockids, which);
if (str == NULL)
fprintf(fp, "UNKNOWN(%d)", which);
else
fputs(str, fp);
return;
}
if ((which & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK) {
fputs("INVALID PERTHREAD|CLOCKFD", fp);
goto pidp;
}
ci = LINUX_CPUCLOCK_WHICH(which);
if (LINUX_CPUCLOCK_PERTHREAD(which) == true)
fputs("THREAD|", fp);
else
fputs("PROCESS|", fp);
str = lookup_value(clockcpuids, ci);
if (str != NULL)
fputs(str, fp);
else {
if (ci == LINUX_CLOCKFD)
fputs("CLOCKFD", fp);
else
fprintf(fp, "UNKNOWN(%d)", which);
}
pidp:
pid = LINUX_CPUCLOCK_ID(which);
fprintf(fp, "(%d)", pid);
}
#!/bin/sh
#
# Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. 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.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
#
# $FreeBSD$
#
# Generates tables_linux.h
#
set -e
LC_ALL=C; export LC_ALL
if [ -z "$1" ]
then
echo "usage: sh $0 include-dir [output-file]"
exit 1
fi
include_dir=$1
if [ -n "$2" ]; then
output_file="$2"
output_tmp=$(mktemp -u)
exec > "$output_tmp"
fi
all_headers=
#
# Generate a table C #definitions. The including file can define the
# TABLE_NAME(n), TABLE_ENTRY(x), and TABLE_END macros to define what
# the tables map to.
#
gen_table()
{
local name grep file excl filter
name=$1
grep=$2
file=$3
excl=$4
if [ -z "$excl" ]; then
filter="cat"
else
filter="egrep -v"
fi
cat <<_EOF_
TABLE_START(${name})
_EOF_
if [ -e "${include_dir}/${file}" ]; then
all_headers="${all_headers:+${all_headers} }${file}"
egrep "^#[[:space:]]*define[[:space:]]+"${grep}"[[:space:]]*" \
$include_dir/$file | ${filter} ${excl} | \
awk '{ for (i = 1; i <= NF; i++) \
if ($i ~ /define/) \
break; \
++i; \
sub(/LINUX_/, "", $i); \
printf "TABLE_ENTRY(LINUX_%s, %s)\n", $i, $i }'
fi
cat <<_EOF_
TABLE_END
_EOF_
}
cat <<_EOF_
/* This file is auto-generated. */
_EOF_
gen_table "clockids" "LINUX_CLOCK_[A-Z_]+[[:space:]]+[0-9]+" "compat/linux/linux_timer.h"
gen_table "clockcpuids" "LINUX_CPUCLOCK_[A-Z_]+[[:space:]]+[0-9]+" "compat/linux/linux_timer.h" "_MASK|_MAX"
# Generate a .depend file for our output file
if [ -n "$output_file" ]; then
depend_tmp=$(mktemp -u)
{
echo "$output_file: \\"
echo "$all_headers" | tr ' ' '\n' | sort -u |
sed -e "s,^, $include_dir/," -e 's,$, \\,'
echo
} > "$depend_tmp"
if cmp -s "$output_tmp" "$output_file"; then
rm -f "$output_tmp" "$depend_tmp"
else
mv -f "$depend_tmp" ".depend.${output_file}"
mv -f "$output_tmp" "$output_file"
fi
fi
......@@ -134,4 +134,12 @@ bool sysdecode_wait6_options(FILE *_fp, int _options, int *_rem);
const char *sysdecode_whence(int _whence);
bool sysdecode_shmflags(FILE *_fp, int _flags, int *_rem);
#if defined(__i386__) || defined(__amd64__) || defined(__aarch64__)
#define SYSDECODE_HAVE_LINUX
void sysdecode_linux_clockid(FILE *_fp, clockid_t _which);
#endif /* __i386__ || __amd64__ || __aarch64__ */
#endif /* !__SYSDECODE_H__ */
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