mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-22 10:48:02 +00:00
libsysdecode: Add preliminary support for decoding Linux syscalls
Differential revision: https://reviews.freebsd.org/D35354 MFC after: 2 weeks
This commit is contained in:
Dmitry Chagin
parent
9dac609629
commit
b69ae1a34c
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@ -5,6 +5,10 @@
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LIB= sysdecode
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SRCS= errno.c flags.c ioctl.c signal.c syscallnames.c utrace.c support.c
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.if ${MACHINE_CPUARCH} == "aarch64" || ${MACHINE_CPUARCH} == "amd64" || \
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${MACHINE_CPUARCH} == "i386"
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SRCS+= linux.c
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.endif
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INCS= sysdecode.h
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CFLAGS+= -I${.OBJDIR}
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@ -106,7 +110,7 @@ MLINKS+=sysdecode_mask.3 sysdecode_accessmode.3 \
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sysdecode_mask.3 sysdecode_wait4_options.3 \
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sysdecode_mask.3 sysdecode_wait6_options.3
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CLEANFILES= ioctl.c ioctl.c.tmp tables.h
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CLEANFILES= ioctl.c ioctl.c.tmp tables.h tables_linux.h
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.if defined(COMPAT_32BIT)
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CPP+= -m32
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@ -121,9 +125,11 @@ CFLAGS.gcc.ioctl.c+= -Wno-redundant-decls
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CFLAGS.gcc+= ${CFLAGS.gcc.${.IMPSRC}}
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DEPENDOBJS+= tables.h
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DEPENDOBJS+= tables.h tables_linux.h
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tables.h: mktables
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sh ${.CURDIR}/mktables ${SYSROOT:U${DESTDIR}}${INCLUDEDIR} ${.TARGET}
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tables_linux.h: mklinuxtables
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sh ${.CURDIR}/mklinuxtables ${SRCTOP}/sys ${.TARGET}
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# mkioctls runs find(1) for headers so needs to rebuild every time. This used
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# to be a hack only done in buildworld.
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@ -139,7 +145,7 @@ ioctl.c: ioctl.c.tmp
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mv -f ${.TARGET}.tmp ${.TARGET}; \
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fi
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beforedepend: ioctl.c tables.h
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beforedepend: ioctl.c tables.h tables_linux.h
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HAS_TESTS=
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SUBDIR.${MK_TESTS}+= tests
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106
lib/libsysdecode/linux.c
Normal file
106
lib/libsysdecode/linux.c
Normal file
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@ -0,0 +1,106 @@
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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*
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* Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.orf>
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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
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* 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
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/proc.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <sysdecode.h>
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#include "support.h"
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#ifdef __aarch64__
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#include <arm64/linux/linux.h>
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#elif __i386__
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#include <i386/linux/linux.h>
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#elif __amd64__
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#ifdef COMPAT_32BIT
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#include <amd64/linux32/linux.h>
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#else
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#include <amd64/linux/linux.h>
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#endif
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#else
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#error "Unsupported Linux arch"
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#endif
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#include <compat/linux/linux.h>
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#include <compat/linux/linux_timer.h>
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#define X(a,b) { a, #b },
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#define XEND { 0, NULL }
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#define TABLE_START(n) static struct name_table n[] = {
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#define TABLE_ENTRY X
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#define TABLE_END XEND };
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#include "tables_linux.h"
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#undef TABLE_START
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#undef TABLE_ENTRY
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#undef TABLE_END
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void
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sysdecode_linux_clockid(FILE *fp, clockid_t which)
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{
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const char *str;
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clockid_t ci;
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pid_t pid;
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if (which >= 0) {
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str = lookup_value(clockids, which);
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if (str == NULL)
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fprintf(fp, "UNKNOWN(%d)", which);
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else
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fputs(str, fp);
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return;
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}
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if ((which & LINUX_CLOCKFD_MASK) == LINUX_CLOCKFD_MASK) {
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fputs("INVALID PERTHREAD|CLOCKFD", fp);
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goto pidp;
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}
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ci = LINUX_CPUCLOCK_WHICH(which);
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if (LINUX_CPUCLOCK_PERTHREAD(which) == true)
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fputs("THREAD|", fp);
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else
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fputs("PROCESS|", fp);
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str = lookup_value(clockcpuids, ci);
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if (str != NULL)
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fputs(str, fp);
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else {
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if (ci == LINUX_CLOCKFD)
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fputs("CLOCKFD", fp);
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else
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fprintf(fp, "UNKNOWN(%d)", which);
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}
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pidp:
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pid = LINUX_CPUCLOCK_ID(which);
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fprintf(fp, "(%d)", pid);
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}
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109
lib/libsysdecode/mklinuxtables
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109
lib/libsysdecode/mklinuxtables
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@ -0,0 +1,109 @@
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#!/bin/sh
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#
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# Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. 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
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# 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
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR 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
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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# Generates tables_linux.h
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#
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set -e
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LC_ALL=C; export LC_ALL
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if [ -z "$1" ]
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then
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echo "usage: sh $0 include-dir [output-file]"
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exit 1
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fi
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include_dir=$1
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if [ -n "$2" ]; then
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output_file="$2"
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output_tmp=$(mktemp -u)
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exec > "$output_tmp"
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fi
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all_headers=
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#
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# Generate a table C #definitions. The including file can define the
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# TABLE_NAME(n), TABLE_ENTRY(x), and TABLE_END macros to define what
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# the tables map to.
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#
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gen_table()
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{
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local name grep file excl filter
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name=$1
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grep=$2
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file=$3
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excl=$4
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if [ -z "$excl" ]; then
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filter="cat"
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else
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filter="egrep -v"
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fi
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cat <<_EOF_
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TABLE_START(${name})
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_EOF_
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if [ -e "${include_dir}/${file}" ]; then
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all_headers="${all_headers:+${all_headers} }${file}"
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egrep "^#[[:space:]]*define[[:space:]]+"${grep}"[[:space:]]*" \
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$include_dir/$file | ${filter} ${excl} | \
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awk '{ for (i = 1; i <= NF; i++) \
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if ($i ~ /define/) \
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break; \
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++i; \
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sub(/LINUX_/, "", $i); \
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printf "TABLE_ENTRY(LINUX_%s, %s)\n", $i, $i }'
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fi
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cat <<_EOF_
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TABLE_END
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_EOF_
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}
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cat <<_EOF_
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/* This file is auto-generated. */
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_EOF_
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gen_table "clockids" "LINUX_CLOCK_[A-Z_]+[[:space:]]+[0-9]+" "compat/linux/linux_timer.h"
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gen_table "clockcpuids" "LINUX_CPUCLOCK_[A-Z_]+[[:space:]]+[0-9]+" "compat/linux/linux_timer.h" "_MASK|_MAX"
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# Generate a .depend file for our output file
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if [ -n "$output_file" ]; then
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depend_tmp=$(mktemp -u)
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{
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echo "$output_file: \\"
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echo "$all_headers" | tr ' ' '\n' | sort -u |
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sed -e "s,^, $include_dir/," -e 's,$, \\,'
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echo
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} > "$depend_tmp"
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if cmp -s "$output_tmp" "$output_file"; then
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rm -f "$output_tmp" "$depend_tmp"
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else
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mv -f "$depend_tmp" ".depend.${output_file}"
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mv -f "$output_tmp" "$output_file"
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fi
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fi
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@ -134,4 +134,12 @@ bool sysdecode_wait6_options(FILE *_fp, int _options, int *_rem);
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const char *sysdecode_whence(int _whence);
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bool sysdecode_shmflags(FILE *_fp, int _flags, int *_rem);
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#if defined(__i386__) || defined(__amd64__) || defined(__aarch64__)
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#define SYSDECODE_HAVE_LINUX
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void sysdecode_linux_clockid(FILE *_fp, clockid_t _which);
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#endif /* __i386__ || __amd64__ || __aarch64__ */
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#endif /* !__SYSDECODE_H__ */
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