/*-
* SPDX-License-Identifier: BSD-2-Clause
*
* Copyright (c) 2022 Dmitry Chagin <dchagin@FreeBSD.org>
*
* 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>
#include <sys/param.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <err.h>
#include <errno.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sysdecode.h>
#include "kdump.h"
#ifdef __amd64__
#include <amd64/linux/linux.h>
#include <amd64/linux32/linux32_syscall.h>
#elif __aarch64__
#include <arm64/linux/linux.h>
#elif __i386__
#include <i386/linux/linux.h>
#endif
#include <compat/linux/linux.h>
#include <compat/linux/linux_file.h>
static void
print_linux_signal(int signo)
{
const char *signame;
signame = sysdecode_linux_signal(signo);
if (signame != NULL)
printf("%s", signame);
else
printf("SIG %d", signo);
}
void
ktrsyscall_linux(struct ktr_syscall *ktr, register_t **resip,
int *resnarg, char *resc)
{
int narg = ktr->ktr_narg;
register_t *ip, *first;
int quad_align, quad_slots;
char c;
ip = first = &ktr->ktr_args[0];
c = *resc;
quad_align = 0;
quad_slots = 1;
switch (ktr->ktr_code) {
case LINUX_SYS_linux_faccessat:
case LINUX_SYS_linux_fchmodat:
case LINUX_SYS_linux_fchownat:
#ifdef LINUX_SYS_linux_newfstatat
case LINUX_SYS_linux_newfstatat:
#endif
#ifdef LINUX_SYS_linux_fstatat64
case LINUX_SYS_linux_fstatat64:
#endif
#ifdef LINUX_SYS_linux_futimesat
case LINUX_SYS_linux_futimesat:
#endif
case LINUX_SYS_linux_linkat:
case LINUX_SYS_linux_mkdirat:
case LINUX_SYS_linux_mknodat:
case LINUX_SYS_linux_openat:
case LINUX_SYS_linux_readlinkat:
case LINUX_SYS_linux_renameat:
case LINUX_SYS_linux_unlinkat:
case LINUX_SYS_linux_utimensat:
putchar('(');
print_integer_arg_valid(sysdecode_atfd, *ip);
c = ',';
ip++;
narg--;
break;
}
switch (ktr->ktr_code) {
#ifdef LINUX_SYS_linux_access
case LINUX_SYS_linux_access:
#endif
case LINUX_SYS_linux_faccessat:
print_number(ip, narg, c);
putchar(',');
print_mask_arg(sysdecode_access_mode, *ip);
ip++;
narg--;
break;
#ifdef LINUX_SYS_linux_chmod
case LINUX_SYS_linux_chmod:
#endif
case LINUX_SYS_linux_fchmodat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
case LINUX_SYS_linux_mknodat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
#ifdef LINUX_SYS_linux_mkdir
case LINUX_SYS_linux_mkdir:
#endif
case LINUX_SYS_linux_mkdirat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
case LINUX_SYS_linux_linkat:
case LINUX_SYS_linux_renameat:
case LINUX_SYS_linux_symlinkat:
print_number(ip, narg, c);
putchar(',');
print_integer_arg_valid(sysdecode_atfd, *ip);
ip++;
narg--;
print_number(ip, narg, c);
break;
case LINUX_SYS_linux_fchownat:
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
break;
#ifdef LINUX_SYS_linux_newfstatat
case LINUX_SYS_linux_newfstatat:
#endif
#ifdef LINUX_SYS_linux_fstatat64
case LINUX_SYS_linux_fstatat64:
#endif
case LINUX_SYS_linux_utimensat:
print_number(ip, narg, c);
print_number(ip, narg, c);
break;
case LINUX_SYS_linux_unlinkat:
print_number(ip, narg, c);
break;
case LINUX_SYS_linux_clock_gettime:
case LINUX_SYS_linux_clock_settime:
case LINUX_SYS_linux_clock_getres:
case LINUX_SYS_linux_timer_create:
putchar('(');
sysdecode_linux_clockid(stdout, *ip);
c = ',';
ip++;
narg--;
break;
case LINUX_SYS_linux_clock_nanosleep:
putchar('(');
sysdecode_linux_clockid(stdout, *ip);
putchar(',');
ip++;
narg--;
print_mask_arg0(sysdecode_linux_clock_flags, *ip);
c = ',';
ip++;
narg--;
break;
case LINUX_SYS_linux_clone:
putchar('(');
print_mask_arg(sysdecode_linux_clone_flags, *ip);
ip++;
narg--;
c = ',';
break;
case LINUX_SYS_linux_kill:
case LINUX_SYS_linux_tkill:
case LINUX_SYS_linux_rt_sigqueueinfo:
print_decimal_number(ip, narg, c);
putchar(',');
print_linux_signal(*ip);
ip++;
narg--;
break;
case LINUX_SYS_linux_tgkill:
case LINUX_SYS_linux_rt_tgsigqueueinfo:
print_decimal_number(ip, narg, c);
print_decimal_number(ip, narg, c);
putchar(',');
print_linux_signal(*ip);
ip++;
narg--;
break;
#ifdef LINUX_SYS_linux_open
case LINUX_SYS_linux_open:
#endif
case LINUX_SYS_linux_openat:
print_number(ip, narg, c);
putchar(',');
print_mask_arg(sysdecode_linux_open_flags, ip[0]);
if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) {
putchar(',');
decode_filemode(ip[1]);
}
ip += 2;
narg -= 2;
break;
case LINUX_SYS_linux_rt_sigaction:
putchar('(');
print_linux_signal(*ip);
ip++;
narg--;
c = ',';
break;
case LINUX_SYS_linux_ftruncate:
case LINUX_SYS_linux_truncate:
print_number(ip, narg, c);
print_number64(first, ip, narg, c);
break;
case LINUX_SYS_linux_getitimer:
case LINUX_SYS_linux_setitimer:
putchar('(');
print_integer_arg(sysdecode_itimer, *ip);
ip++;
narg--;
c = ',';
break;
case LINUX_SYS_linux_rt_sigprocmask:
#ifdef LINUX_SYS_linux_sigprocmask
case LINUX_SYS_linux_sigprocmask:
#endif
putchar('(');
print_integer_arg(sysdecode_linux_sigprocmask_how, *ip);
ip++;
narg--;
c = ',';
break;
}
switch (ktr->ktr_code) {
case LINUX_SYS_linux_fchownat:
case LINUX_SYS_linux_faccessat:
case LINUX_SYS_linux_fchmodat:
#ifdef LINUX_SYS_linux_newfstatat
case LINUX_SYS_linux_newfstatat:
#endif
#ifdef LINUX_SYS_linux_fstatat64
case LINUX_SYS_linux_fstatat64:
#endif
case LINUX_SYS_linux_linkat:
case LINUX_SYS_linux_unlinkat:
case LINUX_SYS_linux_utimensat:
putchar(',');
print_mask_arg0(sysdecode_linux_atflags, *ip);
ip++;
narg--;
break;
}
*resc = c;
*resip = ip;
*resnarg = narg;
}
#if defined(__amd64__)
void
ktrsyscall_linux32(struct ktr_syscall *ktr, register_t **resip,
int *resnarg, char *resc)
{
int narg = ktr->ktr_narg;
register_t *ip, *first;
int quad_align, quad_slots;
char c;
ip = first = &ktr->ktr_args[0];
c = *resc;
quad_align = 0;
quad_slots = 2;
switch (ktr->ktr_code) {
case LINUX32_SYS_linux_faccessat:
case LINUX32_SYS_linux_fchmodat:
case LINUX32_SYS_linux_fchownat:
case LINUX32_SYS_linux_fstatat64:
case LINUX32_SYS_linux_futimesat:
case LINUX32_SYS_linux_linkat:
case LINUX32_SYS_linux_mkdirat:
case LINUX32_SYS_linux_mknodat:
case LINUX32_SYS_linux_openat:
case LINUX32_SYS_linux_readlinkat:
case LINUX32_SYS_linux_renameat:
case LINUX32_SYS_linux_unlinkat:
case LINUX32_SYS_linux_utimensat:
putchar('(');
print_integer_arg_valid(sysdecode_atfd, *ip);
c = ',';
ip++;
narg--;
break;
}
switch (ktr->ktr_code) {
case LINUX32_SYS_linux_access:
case LINUX32_SYS_linux_faccessat:
print_number(ip, narg, c);
putchar(',');
print_mask_arg(sysdecode_access_mode, *ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_chmod:
case LINUX32_SYS_fchmod:
case LINUX32_SYS_linux_fchmodat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_mknodat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_mkdir:
case LINUX32_SYS_linux_mkdirat:
print_number(ip, narg, c);
putchar(',');
decode_filemode(*ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_linkat:
case LINUX32_SYS_linux_renameat:
case LINUX32_SYS_linux_symlinkat:
print_number(ip, narg, c);
putchar(',');
print_integer_arg_valid(sysdecode_atfd, *ip);
ip++;
narg--;
print_number(ip, narg, c);
break;
case LINUX32_SYS_linux_fchownat:
print_number(ip, narg, c);
print_number(ip, narg, c);
print_number(ip, narg, c);
break;
case LINUX32_SYS_linux_fstatat64:
case LINUX32_SYS_linux_utimensat:
print_number(ip, narg, c);
print_number(ip, narg, c);
break;
case LINUX32_SYS_linux_unlinkat:
print_number(ip, narg, c);
break;
case LINUX32_SYS_linux_clock_gettime:
case LINUX32_SYS_linux_clock_settime:
case LINUX32_SYS_linux_clock_getres:
case LINUX32_SYS_linux_timer_create:
case LINUX32_SYS_linux_clock_gettime64:
case LINUX32_SYS_linux_clock_settime64:
case LINUX32_SYS_linux_clock_getres_time64:
putchar('(');
sysdecode_linux_clockid(stdout, *ip);
c = ',';
ip++;
narg--;
break;
case LINUX32_SYS_linux_clock_nanosleep:
putchar('(');
sysdecode_linux_clockid(stdout, *ip);
putchar(',');
ip++;
narg--;
print_mask_arg0(sysdecode_linux_clock_flags, *ip);
c = ',';
ip++;
narg--;
break;
case LINUX32_SYS_linux_clone:
putchar('(');
print_mask_arg(sysdecode_linux_clone_flags, *ip);
ip++;
narg--;
c = ',';
break;
case LINUX32_SYS_linux_kill:
case LINUX32_SYS_linux_tkill:
case LINUX32_SYS_linux_rt_sigqueueinfo:
print_decimal_number(ip, narg, c);
putchar(',');
print_linux_signal(*ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_tgkill:
case LINUX32_SYS_linux_rt_tgsigqueueinfo:
print_decimal_number(ip, narg, c);
print_decimal_number(ip, narg, c);
putchar(',');
print_linux_signal(*ip);
ip++;
narg--;
break;
case LINUX32_SYS_linux_open:
case LINUX32_SYS_linux_openat:
print_number(ip, narg, c);
putchar(',');
print_mask_arg(sysdecode_linux_open_flags, ip[0]);
if ((ip[0] & LINUX_O_CREAT) == LINUX_O_CREAT) {
putchar(',');
decode_filemode(ip[1]);
}
ip += 2;
narg -= 2;
break;
case LINUX32_SYS_linux_signal:
case LINUX32_SYS_linux_sigaction:
case LINUX32_SYS_linux_rt_sigaction:
putchar('(');
print_linux_signal(*ip);
ip++;
narg--;
c = ',';
break;
case LINUX32_SYS_linux_ftruncate:
case LINUX32_SYS_linux_truncate:
print_number(ip, narg, c);
print_number64(first, ip, narg, c);
break;
case LINUX32_SYS_linux_getitimer:
case LINUX32_SYS_linux_setitimer:
putchar('(');
print_integer_arg(sysdecode_itimer, *ip);
ip++;
narg--;
c = ',';
break;
case LINUX32_SYS_linux_rt_sigprocmask:
case LINUX32_SYS_linux_sigprocmask:
putchar('(');
print_integer_arg(sysdecode_linux_sigprocmask_how, *ip);
ip++;
narg--;
c = ',';
break;
}
switch (ktr->ktr_code) {
case LINUX32_SYS_linux_fchownat:
case LINUX32_SYS_linux_faccessat:
case LINUX32_SYS_linux_fchmodat:
case LINUX32_SYS_linux_fstatat64:
case LINUX32_SYS_linux_linkat:
case LINUX32_SYS_linux_unlinkat:
case LINUX32_SYS_linux_utimensat:
putchar(',');
print_mask_arg0(sysdecode_linux_atflags, *ip);
ip++;
narg--;
break;
}
*resc = c;
*resip = ip;
*resnarg = narg;
}
#endif /* __amd64__ */
static void
ktrsigset(const char *name, const l_sigset_t *mask, size_t sz)
{
unsigned long i, c;
printf("%s [ ", name);
c = 0;
for (i = 1; i <= sz * CHAR_BIT; i++) {
if (!LINUX_SIGISMEMBER(*mask, i))
continue;
if (c != 0)
printf(", ");
printf("%s", sysdecode_linux_signal(i));
c++;
}
if (c == 0)
printf("empty ]\n");
else
printf(" ]\n");
}
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);
}
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