/*
* Check decoding of PERF_EVENT_IOC_* commands of ioctl syscall.
*
* Copyright (c) 2018-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <inttypes.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <linux/perf_event.h>
#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, sample_period=%llu%s, ...}) = -1 EBADF (%m)\n",
(unsigned int) pea_ptr->type,
(unsigned int) pea_ptr->size,
(unsigned long long) pea_ptr->config,
(unsigned long long) pea_ptr->sample_period,
#ifdef WORDS_BIGENDIAN
", sample_type=PERF_SAMPLE_IP|PERF_SAMPLE_ADDR|PERF_SAMPLE_ID|"
"PERF_SAMPLE_CPU|PERF_SAMPLE_BRANCH_STACK|PERF_SAMPLE_WEIGHT|"
"PERF_SAMPLE_DATA_SRC|PERF_SAMPLE_IDENTIFIER|"
"PERF_SAMPLE_TRANSACTION|PERF_SAMPLE_REGS_INTR|"
"PERF_SAMPLE_DATA_PAGE_SIZE|PERF_SAMPLE_CODE_PAGE_SIZE|"
"0xc2c3c4c5c6000000"
", read_format=PERF_FORMAT_TOTAL_TIME_ENABLED|0xcacbcccdcecfd0d0"
", disabled=1, inherit=1, exclusive=1, exclude_hv=1, mmap=1"
", comm=1, inherit_stat=1, watermark=1"
", precise_ip=3 /* must have 0 skid */, mmap_data=1"
", exclude_host=1, exclude_callchain_kernel=1, comm_exec=1"
", use_clockid=1, write_backward=1, ksymbol=1, aux_output=1"
", cgroup=1, text_poke=1, inherit_thread=1, sigtrap=1"
", __reserved_1=0x2d7d8d9 /* Bits 63..38 */"
#else
", sample_type=PERF_SAMPLE_TID|PERF_SAMPLE_ID|PERF_SAMPLE_CPU|"
"PERF_SAMPLE_PERIOD|PERF_SAMPLE_STREAM_ID|PERF_SAMPLE_WEIGHT|"
"PERF_SAMPLE_DATA_SRC|PERF_SAMPLE_REGS_INTR|"
"PERF_SAMPLE_DATA_PAGE_SIZE|PERF_SAMPLE_CODE_PAGE_SIZE|"
"PERF_SAMPLE_WEIGHT_STRUCT|0xc9c8c7c6c4000000"
", read_format=PERF_FORMAT_TOTAL_TIME_RUNNING|PERF_FORMAT_GROUP|"
"0xd1d0cfcecdcccbc0"
", inherit=1, exclude_user=1, exclude_hv=1, exclude_idle=1"
", mmap=1, comm=1, enable_on_exec=1, watermark=1"
", precise_ip=1 /* constant skid */, sample_id_all=1"
", exclude_guest=1, exclude_callchain_user=1, mmap2=1"
", comm_exec=1, context_switch=1, namespaces=1, bpf_event=1"
", aux_output=1, text_poke=1, build_id=1, remove_on_exec=1"
", __reserved_1=0x367635f /* Bits 63..38 */"
#endif
);
ioctl(-1, PERF_EVENT_IOC_MODIFY_ATTRIBUTES, pea_ptr);
puts("+++ exited with 0 +++");
return 0;
}