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/*
* Check decoding of PERF_EVENT_IOC_* commands of ioctl syscall.
*
* Copyright (c) 2018-2019 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#ifdef HAVE_LINUX_PERF_EVENT_H
# include <inttypes.h>
# include <stdio.h>
# include <string.h>
# include <unistd.h>
# include <sys/ioctl.h>
# include "scno.h"
# include <linux/perf_event.h>
/*
* Workaround the bug in kernel UAPI that was fixed
* in Linux commit v2.6.33-rc1~48^2~288^2~19.
*/
# ifndef u64
# define u64 uint64_t
# endif
# define XLAT_MACROS_ONLY
# include "xlat/perf_ioctl_cmds.h"
# undef XLAT_MACROS_ONLY
# define STR16 "0123456789abcdef"
static long
sys_ioctl(kernel_long_t fd, kernel_ulong_t cmd, kernel_ulong_t arg)
{
return syscall(__NR_ioctl, fd, cmd, arg);
}
int
main(void)
{
static const kernel_ulong_t unknown_perf_cmd =
(kernel_ulong_t) 0xbadc0dedfeed24edULL;
static const kernel_ulong_t magic =
(kernel_ulong_t) 0xdeadbeefbadc0dedULL;
static const uint64_t magic64 = 0xfacefeeddeadc0deULL;
static const char str[] = STR16 STR16 STR16 STR16;
static struct {
unsigned int cmd;
const char *str;
} flag_iocs[] = {
{ ARG_STR(PERF_EVENT_IOC_ENABLE) },
{ ARG_STR(PERF_EVENT_IOC_DISABLE) },
{ ARG_STR(PERF_EVENT_IOC_RESET) },
};
TAIL_ALLOC_OBJECT_CONST_PTR(uint64_t, u64_ptr);
uint64_t *const u64_efault = u64_ptr + 1;
uint32_t *const u32_arr = tail_alloc(sizeof(uint32_t) * 4);
uint32_t *const u32_efault = u32_arr + 4;
char *const str_ptr = tail_memdup(str, sizeof(str));
char *const str_efault = str_ptr + sizeof(str);
TAIL_ALLOC_OBJECT_CONST_PTR(struct perf_event_attr, pea_ptr);
*u64_ptr = magic64;
fill_memory_ex(pea_ptr, sizeof(*pea_ptr), 0xaa, 0x55);
/* Unknown perf commands */
sys_ioctl(-1, unknown_perf_cmd, magic);
printf("ioctl(-1, _IOC(%s_IOC_READ|_IOC_WRITE, 0x24, %#x, %#x), "
"%#lx) = -1 EBADF (%m)\n",
_IOC_DIR((unsigned int) unknown_perf_cmd) & _IOC_NONE ?
"_IOC_NONE|" : "",
_IOC_NR((unsigned int) unknown_perf_cmd),
_IOC_SIZE((unsigned int) unknown_perf_cmd),
(unsigned long) magic);
sys_ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES + 1, magic);
printf("ioctl(-1, _IOC(_IOC_WRITE, 0x24, %#x, %#x), %#lx)"
" = -1 EBADF (%m)\n",
(unsigned int) _IOC_NR(PERF_EVENT_IOC_MODIFY_ATTRIBUTES + 1),
(unsigned int) _IOC_SIZE(PERF_EVENT_IOC_MODIFY_ATTRIBUTES + 1),
(unsigned long) magic);
/* PERF_EVENT_IOC_{ENABLE,DISABLE,RESET} */
for (unsigned i = 0; i < ARRAY_SIZE(flag_iocs); i++) {
ioctl(-1, flag_iocs[i].cmd, 0);
printf("ioctl(-1, %s, 0) = -1 EBADF (%m)\n", flag_iocs[i].str);
ioctl(-1, flag_iocs[i].cmd, 1);
printf("ioctl(-1, %s, PERF_IOC_FLAG_GROUP) = -1 EBADF (%m)\n",
flag_iocs[i].str);
ioctl(-1, flag_iocs[i].cmd, 2);
printf("ioctl(-1, %s, 0x2 /* PERF_IOC_FLAG_??? */) "
"= -1 EBADF (%m)\n",
flag_iocs[i].str);
sys_ioctl(-1, flag_iocs[i].cmd, magic);
printf("ioctl(-1, %s, PERF_IOC_FLAG_GROUP|%#x) "
"= -1 EBADF (%m)\n",
flag_iocs[i].str, (unsigned int) magic & ~1U);
}
/* PERF_EVENT_IOC_REFRESH */
sys_ioctl(-1, PERF_EVENT_IOC_REFRESH, magic);
printf("ioctl(-1, PERF_EVENT_IOC_REFRESH, %d) = -1 EBADF (%m)\n",
(int) magic);
/* PERF_EVENT_IOC_PERIOD */
ioctl(-1, PERF_EVENT_IOC_PERIOD, NULL);
printf("ioctl(-1, PERF_EVENT_IOC_PERIOD, NULL) = -1 EBADF (%m)\n");
ioctl(-1, PERF_EVENT_IOC_PERIOD, u64_efault);
printf("ioctl(-1, PERF_EVENT_IOC_PERIOD, %p) = -1 EBADF (%m)\n",
u64_efault);
ioctl(-1, PERF_EVENT_IOC_PERIOD, u64_ptr);
printf("ioctl(-1, PERF_EVENT_IOC_PERIOD, [%" PRIu64 "])"
" = -1 EBADF (%m)\n",
magic64);
/* PERF_EVENT_IOC_SET_OUTPUT */
sys_ioctl(-1, PERF_EVENT_IOC_SET_OUTPUT, magic);
printf("ioctl(-1, PERF_EVENT_IOC_SET_OUTPUT, %d) = -1 EBADF (%m)\n",
(int) magic);
/* PERF_EVENT_IOC_SET_FILTER */
ioctl(-1, PERF_EVENT_IOC_SET_FILTER, NULL);
printf("ioctl(-1, PERF_EVENT_IOC_SET_FILTER, NULL) = -1 EBADF (%m)\n");
ioctl(-1, PERF_EVENT_IOC_SET_FILTER, str_efault);
printf("ioctl(-1, PERF_EVENT_IOC_SET_FILTER, %p) = -1 EBADF (%m)\n",
str_efault);
ioctl(-1, PERF_EVENT_IOC_SET_FILTER, str_ptr);
printf("ioctl(-1, PERF_EVENT_IOC_SET_FILTER, \"%.32s\"...)"
" = -1 EBADF (%m)\n",
str_ptr);
ioctl(-1, PERF_EVENT_IOC_SET_FILTER, str_ptr + 40);
printf("ioctl(-1, PERF_EVENT_IOC_SET_FILTER, \"%.32s\")"
" = -1 EBADF (%m)\n",
str_ptr + 40);
str_ptr[sizeof(str) - 1] = '0';
ioctl(-1, PERF_EVENT_IOC_SET_FILTER, str_ptr + 40);
printf("ioctl(-1, PERF_EVENT_IOC_SET_FILTER, %p)"
" = -1 EBADF (%m)\n",
str_ptr + 40);
/* PERF_EVENT_IOC_ID */
ioctl(-1, PERF_EVENT_IOC_ID, NULL);
printf("ioctl(-1, PERF_EVENT_IOC_ID, NULL) = -1 EBADF (%m)\n");
ioctl(-1, PERF_EVENT_IOC_ID, u64_efault);
printf("ioctl(-1, PERF_EVENT_IOC_ID, %p) = -1 EBADF (%m)\n",
u64_efault);
ioctl(-1, PERF_EVENT_IOC_ID, u64_ptr);
printf("ioctl(-1, PERF_EVENT_IOC_ID, %p) = -1 EBADF (%m)\n",
u64_ptr);
/* PERF_EVENT_IOC_SET_BPF */
sys_ioctl(-1, PERF_EVENT_IOC_SET_BPF, magic);
printf("ioctl(-1, PERF_EVENT_IOC_SET_BPF, %d) = -1 EBADF (%m)\n",
(int) magic);
/* PERF_EVENT_IOC_PAUSE_OUTPUT */
sys_ioctl(-1, PERF_EVENT_IOC_PAUSE_OUTPUT, magic);
printf("ioctl(-1, PERF_EVENT_IOC_PAUSE_OUTPUT, %lu) = -1 EBADF (%m)\n",
(unsigned long) magic);
/* PERF_EVENT_IOC_QUERY_BPF */
ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, NULL);
printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, NULL) = -1 EBADF (%m)\n");
ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_efault);
printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, %p) = -1 EBADF (%m)\n",
u32_efault);
u32_arr[0] = 0xbadc0ded;
ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, u32_arr);
printf("ioctl(-1, PERF_EVENT_IOC_QUERY_BPF, {ids_len=3134983661, ...})"
" = -1 EBADF (%m)\n");
/* PERF_EVENT_IOC_MODIFY_ATTRIBUTES */
ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, NULL);
printf("ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, NULL)"
" = -1 EBADF (%m)\n");
ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, pea_ptr + 1);
printf("ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, %p)"
" = -1 EBADF (%m)\n",
pea_ptr + 1);
printf("ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES"
", {type=%#x /* PERF_TYPE_??? */"
", size=%#x /* PERF_ATTR_SIZE_??? */"
", config=%#llx, ...}) = -1 EBADF (%m)\n",
(unsigned int) pea_ptr->type,
(unsigned int) pea_ptr->size,
(unsigned long long) pea_ptr->config);
ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, pea_ptr);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("HAVE_LINUX_PERF_EVENT_H");
#endif
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