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/*
* Check decoding of COUNTER_* commands of ioctl syscall.
*
* Copyright (c) 2022 Eugene Syromyatnikov <evgsyr@gmail.com>.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include "scno.h"
#include <errno.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/ioctl.h>
#include <linux/counter.h>
/* A hack for handling different types of _IOC() on various platforms */
#if XLAT_RAW
# define XLAT_ARGS_U(a_) (unsigned int) (a_)
#elif XLAT_VERBOSE
# define XLAT_ARGS_U(a_) (unsigned int) (a_), #a_
#else
# define XLAT_ARGS_U(a_) #a_
#endif
static const char *errstr;
static long
sys_ioctl(kernel_long_t fd, kernel_ulong_t cmd, kernel_ulong_t arg)
{
const long rc = syscall(__NR_ioctl, fd, cmd, arg);
errstr = sprintrc(rc);
return rc;
}
int
main(void)
{
static const struct {
uint32_t val;
const char *str;
} dirs[] = {
{ ARG_STR(_IOC_NONE) },
{ ARG_STR(_IOC_READ) },
{ ARG_STR(_IOC_WRITE) },
{ ARG_STR(_IOC_READ|_IOC_WRITE) },
};
static const kernel_ulong_t magic =
(kernel_ulong_t) 0xdeadbeefbadc0dedULL;
/* Unknown counter ioctl */
for (size_t i = 0; i < ARRAY_SIZE(dirs); i++) {
for (unsigned int j = 0; j < 32; j += 1) {
sys_ioctl(-1, _IOC(dirs[i].val, '>', 3, j), magic);
printf("ioctl(-1, "
XLAT_KNOWN(%#x, "_IOC(%s, 0x3e, 0x3, %#x)")
", %#lx) = %s\n",
#if XLAT_RAW || XLAT_VERBOSE
(unsigned int) _IOC(dirs[i].val, '>', 3, j),
#endif
#if !XLAT_RAW
dirs[i].str, j,
#endif
(unsigned long) magic, errstr);
}
}
/* COUNTER_ADD_WATCH_IOCTL */
static const struct {
struct counter_watch val;;
const char *str;
} watches[] = {
{ { { 0 } },
"{component={type=" XLAT_KNOWN(0, "COUNTER_COMPONENT_NONE")
", scope=" XLAT_KNOWN(0, "COUNTER_SCOPE_DEVICE")
", parent=0, id=0}"
", event=" XLAT_KNOWN(0, "COUNTER_EVENT_OVERFLOW")
", channel=0}" },
{ { { COUNTER_COMPONENT_EXTENSION, COUNTER_SCOPE_COUNT,
23, 42 }, COUNTER_EVENT_CAPTURE, 69 },
"{component="
"{type=" XLAT_KNOWN(0x5, "COUNTER_COMPONENT_EXTENSION")
", scope=" XLAT_KNOWN(0x2, "COUNTER_SCOPE_COUNT")
", parent=23, id=42}"
", event=" XLAT_KNOWN(0x6, "COUNTER_EVENT_CAPTURE")
", channel=69}" },
{ { { COUNTER_COMPONENT_EXTENSION + 1, COUNTER_SCOPE_COUNT + 1,
142, 160 }, COUNTER_EVENT_CAPTURE + 1, 173 },
"{component={type=" XLAT_UNKNOWN(0x6, "COUNTER_COMPONENT_???")
", scope=" XLAT_UNKNOWN(0x3, "COUNTER_SCOPE_???")
", parent=142, id=160}"
", event=" XLAT_UNKNOWN(0x7, "COUNTER_EVENT_???")
", channel=173}" },
};
TAIL_ALLOC_OBJECT_CONST_PTR(struct counter_watch, watch);
sys_ioctl(-1, COUNTER_ADD_WATCH_IOCTL, 0);
printf("ioctl(-1, " XLAT_FMT ", NULL) = %s\n",
XLAT_ARGS_U(COUNTER_ADD_WATCH_IOCTL), errstr);
sys_ioctl(-1, COUNTER_ADD_WATCH_IOCTL, (uintptr_t) watch + 1);
printf("ioctl(-1, " XLAT_FMT ", %p) = %s\n",
XLAT_ARGS_U(COUNTER_ADD_WATCH_IOCTL),
(char *) watch + 1, errstr);
for (size_t i = 0; i < ARRAY_SIZE(watches); i++) {
memcpy(watch, &watches[i].val, sizeof(watches[i].val));
sys_ioctl(-1, COUNTER_ADD_WATCH_IOCTL, (uintptr_t) watch);
printf("ioctl(-1, " XLAT_FMT ", %s) = %s\n",
XLAT_ARGS_U(COUNTER_ADD_WATCH_IOCTL),
watches[i].str, errstr);
}
/* COUNTER_ENABLE_EVENTS_IOCTL */
sys_ioctl(-1, COUNTER_ENABLE_EVENTS_IOCTL, magic);
printf("ioctl(-1, " XLAT_FMT ") = %s\n",
XLAT_ARGS_U(COUNTER_ENABLE_EVENTS_IOCTL), errstr);
/* COUNTER_DISABLE_EVENTS_IOCTL */
sys_ioctl(-1, COUNTER_DISABLE_EVENTS_IOCTL, magic);
printf("ioctl(-1, " XLAT_FMT ") = %s\n",
XLAT_ARGS_U(COUNTER_DISABLE_EVENTS_IOCTL), errstr);
puts("+++ exited with 0 +++");
return 0;
}
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