527 lines
12 KiB
C
527 lines
12 KiB
C
/*-
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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.org>
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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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#include <sys/param.h>
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#include <sys/uio.h>
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#include <sys/ktrace.h>
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#include <err.h>
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#include <errno.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysdecode.h>
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#include "kdump.h"
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#ifdef __amd64__
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#include <amd64/linux/linux.h>
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#include <amd64/linux32/linux32_syscall.h>
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#elif __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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#endif
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#include <compat/linux/linux.h>
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#include <compat/linux/linux_file.h>
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static void
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print_linux_signal(int signo)
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{
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const char *signame;
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signame = sysdecode_linux_signal(signo);
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if (signame != NULL)
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printf("%s", signame);
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else
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printf("SIG %d", signo);
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}
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void
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ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
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int *resnarg, char *resc)
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{
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int narg = ktr->ktr_narg;
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register_t *ip, *first;
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int quad_align, quad_slots;
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char c;
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ip = first = &ktr->ktr_args[0];
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c = *resc;
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quad_align = 0;
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quad_slots = 1;
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switch (ktr->ktr_code) {
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case LINUX_SYS_linux_faccessat:
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case LINUX_SYS_linux_fchmodat:
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case LINUX_SYS_linux_fchownat:
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#ifdef LINUX_SYS_linux_newfstatat
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case LINUX_SYS_linux_newfstatat:
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#endif
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#ifdef LINUX_SYS_linux_fstatat64
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case LINUX_SYS_linux_fstatat64:
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#endif
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#ifdef LINUX_SYS_linux_futimesat
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case LINUX_SYS_linux_futimesat:
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#endif
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case LINUX_SYS_linux_linkat:
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case LINUX_SYS_linux_mkdirat:
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case LINUX_SYS_linux_mknodat:
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case LINUX_SYS_linux_openat:
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case LINUX_SYS_linux_readlinkat:
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case LINUX_SYS_linux_renameat:
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case LINUX_SYS_linux_unlinkat:
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case LINUX_SYS_linux_utimensat:
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putchar('(');
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print_integer_arg_valid(sysdecode_atfd, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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}
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switch (ktr->ktr_code) {
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#ifdef LINUX_SYS_linux_access
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case LINUX_SYS_linux_access:
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#endif
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case LINUX_SYS_linux_faccessat:
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print_number(ip, narg, c);
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putchar(',');
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print_mask_arg(sysdecode_access_mode, *ip);
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ip++;
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narg--;
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break;
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#ifdef LINUX_SYS_linux_chmod
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case LINUX_SYS_linux_chmod:
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#endif
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case LINUX_SYS_linux_fchmodat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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case LINUX_SYS_linux_mknodat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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#ifdef LINUX_SYS_linux_mkdir
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case LINUX_SYS_linux_mkdir:
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#endif
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case LINUX_SYS_linux_mkdirat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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case LINUX_SYS_linux_linkat:
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case LINUX_SYS_linux_renameat:
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case LINUX_SYS_linux_symlinkat:
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print_number(ip, narg, c);
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putchar(',');
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print_integer_arg_valid(sysdecode_atfd, *ip);
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ip++;
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narg--;
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print_number(ip, narg, c);
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break;
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case LINUX_SYS_linux_fchownat:
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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break;
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#ifdef LINUX_SYS_linux_newfstatat
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case LINUX_SYS_linux_newfstatat:
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#endif
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#ifdef LINUX_SYS_linux_fstatat64
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case LINUX_SYS_linux_fstatat64:
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#endif
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case LINUX_SYS_linux_utimensat:
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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break;
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case LINUX_SYS_linux_unlinkat:
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print_number(ip, narg, c);
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break;
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case LINUX_SYS_linux_clock_gettime:
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case LINUX_SYS_linux_clock_settime:
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case LINUX_SYS_linux_clock_getres:
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case LINUX_SYS_linux_timer_create:
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putchar('(');
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sysdecode_linux_clockid(stdout, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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case LINUX_SYS_linux_clock_nanosleep:
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putchar('(');
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sysdecode_linux_clockid(stdout, *ip);
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putchar(',');
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ip++;
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narg--;
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print_mask_arg0(sysdecode_linux_clock_flags, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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case LINUX_SYS_linux_clone:
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putchar('(');
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print_mask_arg(sysdecode_linux_clone_flags, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX_SYS_linux_kill:
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case LINUX_SYS_linux_tkill:
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case LINUX_SYS_linux_rt_sigqueueinfo:
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print_decimal_number(ip, narg, c);
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putchar(',');
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print_linux_signal(*ip);
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ip++;
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narg--;
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break;
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case LINUX_SYS_linux_tgkill:
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case LINUX_SYS_linux_rt_tgsigqueueinfo:
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print_decimal_number(ip, narg, c);
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print_decimal_number(ip, narg, c);
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putchar(',');
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print_linux_signal(*ip);
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ip++;
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narg--;
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break;
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#ifdef LINUX_SYS_linux_open
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case LINUX_SYS_linux_open:
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#endif
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case LINUX_SYS_linux_openat:
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print_number(ip, narg, c);
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putchar(',');
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print_mask_arg(sysdecode_linux_open_flags, ip[0]);
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if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) {
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putchar(',');
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decode_filemode(ip[1]);
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}
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ip += 2;
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narg -= 2;
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break;
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case LINUX_SYS_linux_rt_sigaction:
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putchar('(');
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print_linux_signal(*ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX_SYS_linux_ftruncate:
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case LINUX_SYS_linux_truncate:
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print_number(ip, narg, c);
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print_number64(first, ip, narg, c);
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break;
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case LINUX_SYS_linux_getitimer:
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case LINUX_SYS_linux_setitimer:
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putchar('(');
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print_integer_arg(sysdecode_itimer, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX_SYS_linux_rt_sigprocmask:
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#ifdef LINUX_SYS_linux_sigprocmask
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case LINUX_SYS_linux_sigprocmask:
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#endif
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putchar('(');
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print_integer_arg(sysdecode_linux_sigprocmask_how, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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}
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switch (ktr->ktr_code) {
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case LINUX_SYS_linux_fchownat:
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case LINUX_SYS_linux_faccessat:
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case LINUX_SYS_linux_fchmodat:
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#ifdef LINUX_SYS_linux_newfstatat
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case LINUX_SYS_linux_newfstatat:
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#endif
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#ifdef LINUX_SYS_linux_fstatat64
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case LINUX_SYS_linux_fstatat64:
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#endif
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case LINUX_SYS_linux_linkat:
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case LINUX_SYS_linux_unlinkat:
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case LINUX_SYS_linux_utimensat:
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putchar(',');
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print_mask_arg0(sysdecode_linux_atflags, *ip);
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ip++;
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narg--;
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break;
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}
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*resc = c;
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*resip = ip;
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*resnarg = narg;
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}
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#if defined(__amd64__)
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void
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ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
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int *resnarg, char *resc)
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{
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int narg = ktr->ktr_narg;
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register_t *ip, *first;
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int quad_align, quad_slots;
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char c;
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ip = first = &ktr->ktr_args[0];
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c = *resc;
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quad_align = 0;
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quad_slots = 2;
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switch (ktr->ktr_code) {
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case LINUX32_SYS_linux_faccessat:
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case LINUX32_SYS_linux_fchmodat:
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case LINUX32_SYS_linux_fchownat:
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case LINUX32_SYS_linux_fstatat64:
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case LINUX32_SYS_linux_futimesat:
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case LINUX32_SYS_linux_linkat:
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case LINUX32_SYS_linux_mkdirat:
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case LINUX32_SYS_linux_mknodat:
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case LINUX32_SYS_linux_openat:
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case LINUX32_SYS_linux_readlinkat:
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case LINUX32_SYS_linux_renameat:
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case LINUX32_SYS_linux_unlinkat:
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case LINUX32_SYS_linux_utimensat:
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putchar('(');
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print_integer_arg_valid(sysdecode_atfd, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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}
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switch (ktr->ktr_code) {
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case LINUX32_SYS_linux_access:
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case LINUX32_SYS_linux_faccessat:
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print_number(ip, narg, c);
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putchar(',');
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print_mask_arg(sysdecode_access_mode, *ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_chmod:
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case LINUX32_SYS_fchmod:
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case LINUX32_SYS_linux_fchmodat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_mknodat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_mkdir:
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case LINUX32_SYS_linux_mkdirat:
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print_number(ip, narg, c);
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putchar(',');
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decode_filemode(*ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_linkat:
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case LINUX32_SYS_linux_renameat:
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case LINUX32_SYS_linux_symlinkat:
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print_number(ip, narg, c);
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putchar(',');
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print_integer_arg_valid(sysdecode_atfd, *ip);
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ip++;
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narg--;
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print_number(ip, narg, c);
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break;
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case LINUX32_SYS_linux_fchownat:
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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break;
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case LINUX32_SYS_linux_fstatat64:
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case LINUX32_SYS_linux_utimensat:
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print_number(ip, narg, c);
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print_number(ip, narg, c);
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break;
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case LINUX32_SYS_linux_unlinkat:
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print_number(ip, narg, c);
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break;
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case LINUX32_SYS_linux_clock_gettime:
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case LINUX32_SYS_linux_clock_settime:
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case LINUX32_SYS_linux_clock_getres:
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case LINUX32_SYS_linux_timer_create:
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case LINUX32_SYS_linux_clock_gettime64:
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case LINUX32_SYS_linux_clock_settime64:
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case LINUX32_SYS_linux_clock_getres_time64:
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putchar('(');
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sysdecode_linux_clockid(stdout, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_clock_nanosleep:
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putchar('(');
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sysdecode_linux_clockid(stdout, *ip);
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putchar(',');
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ip++;
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narg--;
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print_mask_arg0(sysdecode_linux_clock_flags, *ip);
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c = ',';
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_clone:
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putchar('(');
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print_mask_arg(sysdecode_linux_clone_flags, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX32_SYS_linux_kill:
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case LINUX32_SYS_linux_tkill:
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case LINUX32_SYS_linux_rt_sigqueueinfo:
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print_decimal_number(ip, narg, c);
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putchar(',');
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print_linux_signal(*ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_tgkill:
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case LINUX32_SYS_linux_rt_tgsigqueueinfo:
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print_decimal_number(ip, narg, c);
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print_decimal_number(ip, narg, c);
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putchar(',');
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print_linux_signal(*ip);
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ip++;
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narg--;
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break;
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case LINUX32_SYS_linux_open:
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case LINUX32_SYS_linux_openat:
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print_number(ip, narg, c);
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putchar(',');
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print_mask_arg(sysdecode_linux_open_flags, ip[0]);
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if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) {
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putchar(',');
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decode_filemode(ip[1]);
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}
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ip += 2;
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narg -= 2;
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break;
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case LINUX32_SYS_linux_signal:
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case LINUX32_SYS_linux_sigaction:
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case LINUX32_SYS_linux_rt_sigaction:
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putchar('(');
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print_linux_signal(*ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX32_SYS_linux_ftruncate:
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case LINUX32_SYS_linux_truncate:
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print_number(ip, narg, c);
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print_number64(first, ip, narg, c);
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break;
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case LINUX32_SYS_linux_getitimer:
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case LINUX32_SYS_linux_setitimer:
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putchar('(');
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print_integer_arg(sysdecode_itimer, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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case LINUX32_SYS_linux_rt_sigprocmask:
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case LINUX32_SYS_linux_sigprocmask:
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putchar('(');
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print_integer_arg(sysdecode_linux_sigprocmask_how, *ip);
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ip++;
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narg--;
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c = ',';
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break;
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}
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switch (ktr->ktr_code) {
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case LINUX32_SYS_linux_fchownat:
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case LINUX32_SYS_linux_faccessat:
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case LINUX32_SYS_linux_fchmodat:
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case LINUX32_SYS_linux_fstatat64:
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case LINUX32_SYS_linux_linkat:
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case LINUX32_SYS_linux_unlinkat:
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case LINUX32_SYS_linux_utimensat:
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putchar(',');
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print_mask_arg0(sysdecode_linux_atflags, *ip);
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ip++;
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narg--;
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break;
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}
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*resc = c;
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*resip = ip;
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*resnarg = narg;
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}
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#endif /* __amd64__ */
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static void
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ktrsigset(const char *name, const l_sigset_t *mask, size_t sz)
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{
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unsigned long i, c;
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printf("%s [ ", name);
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c = 0;
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for (i = 1; i <= sz * CHAR_BIT; i++) {
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if (!LINUX_SIGISMEMBER(*mask, i))
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continue;
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if (c != 0)
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printf(", ");
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printf("%s", sysdecode_linux_signal(i));
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c++;
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}
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if (c == 0)
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printf("empty ]\n");
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else
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printf(" ]\n");
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|
}
|
|
|
|
bool
|
|
ktrstruct_linux(const char *name, const char *data, size_t datalen)
|
|
{
|
|
l_sigset_t mask;
|
|
|
|
if (strcmp(name, "l_sigset_t") == 0) {
|
|
/* Old Linux sigset_t is one word size. */
|
|
if (datalen < sizeof(int) || datalen > sizeof(l_sigset_t))
|
|
return (false);
|
|
memcpy(&mask, data, datalen);
|
|
ktrsigset(name, &mask, datalen);
|
|
} else
|
|
return (false);
|
|
|
|
return (true);
|
|
}
|