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/*
* Check decoding of WDIOC* commands of ioctl syscall.
*
* Copyright (c) 2019-2024 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/watchdog.h>
#define XLAT_MACROS_ONLY
#include "xlat/watchdog_ioctl_cmds.h"
#undef XLAT_MACROS_ONLY
static const char *errstr;
static int
do_ioctl(kernel_ulong_t cmd, kernel_ulong_t arg)
{
int rc = ioctl(-1, cmd, arg);
errstr = sprintrc(rc);
#ifdef INJECT_RETVAL
if (rc != INJECT_RETVAL)
error_msg_and_fail("Return value [%d] does not match"
" expectations [%d]", rc, INJECT_RETVAL);
static char inj_errstr[4096];
snprintf(inj_errstr, sizeof(inj_errstr), "%s (INJECTED)", errstr);
errstr = inj_errstr;
#endif
return rc;
}
static int
do_ioctl_ptr(kernel_ulong_t cmd, const void *arg)
{
return do_ioctl(cmd, (uintptr_t) arg);
}
int
main(int argc, const char *argv[])
{
#ifdef INJECT_RETVAL
unsigned long num_skip;
bool locked = false;
if (argc < 2)
error_msg_and_fail("Usage: %s NUM_SKIP", argv[0]);
num_skip = strtoul(argv[1], NULL, 0);
for (size_t i = 0; i < num_skip; i++) {
long ret = ioctl(-1, WDIOC_GETSUPPORT, 0);
printf("ioctl(-1, WDIOC_GETSUPPORT, NULL) = %s%s\n",
sprintrc(ret),
ret == INJECT_RETVAL ? " (INJECTED)" : "");
if (ret != INJECT_RETVAL)
continue;
locked = true;
break;
}
if (!locked)
error_msg_and_fail("Issued %lu ioctl syscalls but failed"
" to detect an injected return code %d",
num_skip, INJECT_RETVAL);
#endif
TAIL_ALLOC_OBJECT_CONST_PTR(struct watchdog_info, ident);
#define IDENT_OPTIONS 0x87ff
ident->options = IDENT_OPTIONS;
ident->firmware_version = 6;
memset(ident->identity, 'A', sizeof(ident->identity));
ident->identity[sizeof(ident->identity) - 1] = '\0';
int rc = do_ioctl_ptr(WDIOC_GETSUPPORT, ident);
if (rc < 0) {
printf("ioctl(-1, WDIOC_GETSUPPORT, %p) = %s\n", ident, errstr);
} else {
printf("ioctl(-1, WDIOC_GETSUPPORT, {options=%s, ",
XLAT_KNOWN(IDENT_OPTIONS,
"WDIOF_OVERHEAT|WDIOF_FANFAULT|"
"WDIOF_EXTERN1|WDIOF_EXTERN2|"
"WDIOF_POWERUNDER|WDIOF_CARDRESET|"
"WDIOF_POWEROVER|WDIOF_SETTIMEOUT|"
"WDIOF_MAGICCLOSE|WDIOF_PRETIMEOUT|"
"WDIOF_ALARMONLY|WDIOF_KEEPALIVEPING"));
#if VERBOSE
printf("firmware_version=0x%x, identity=\"%s\"",
ident->firmware_version,
ident->identity);
#else
printf("...");
#endif
printf("}) = %s\n", errstr);
}
static const struct {
uint32_t cmd;
const char *str;
} simple_get_cmds[] = {
{ ARG_STR(WDIOC_GETSTATUS) },
{ ARG_STR(WDIOC_GETBOOTSTATUS) },
{ ARG_STR(WDIOC_GETTEMP) },
{ ARG_STR(WDIOC_GETTIMEOUT) },
{ ARG_STR(WDIOC_GETPRETIMEOUT) },
{ ARG_STR(WDIOC_GETTIMELEFT) },
};
TAIL_ALLOC_OBJECT_CONST_PTR(int, val);
*val = 123;
for (size_t i = 0; i < ARRAY_SIZE(simple_get_cmds); ++i) {
int rc = do_ioctl_ptr(simple_get_cmds[i].cmd, val);
printf("ioctl(-1, " XLAT_FMT ", ",
XLAT_SEL(simple_get_cmds[i].cmd, simple_get_cmds[i].str));
if (rc < 0) {
printf("%p) = %s\n", val, errstr);
} else {
printf("[%d]) = %s\n", *val, errstr);
}
}
do_ioctl_ptr(WDIOC_SETTIMEOUT, val);
printf("ioctl(-1, WDIOC_SETTIMEOUT, [123]) = %s\n", errstr);
do_ioctl_ptr(WDIOC_SETPRETIMEOUT, val);
printf("ioctl(-1, WDIOC_SETPRETIMEOUT, [123]) = %s\n", errstr);
TAIL_ALLOC_OBJECT_CONST_PTR(unsigned int, options);
*options = 1;
do_ioctl_ptr(WDIOC_SETOPTIONS, options);
printf("ioctl(-1, WDIOC_SETOPTIONS, [%s]) = %s\n",
XLAT_KNOWN(0x1, "WDIOS_DISABLECARD"), errstr);
*options = 6;
do_ioctl_ptr(WDIOC_SETOPTIONS, options);
printf("ioctl(-1, WDIOC_SETOPTIONS, [%s]) = %s\n",
XLAT_KNOWN(0x6, "WDIOS_ENABLECARD|WDIOS_TEMPPANIC"), errstr);
*options = 0xfed8;
do_ioctl_ptr(WDIOC_SETOPTIONS, options);
printf("ioctl(-1, WDIOC_SETOPTIONS, [%s]) = %s\n",
XLAT_UNKNOWN(0xfed8, "WDIOS_???"), errstr);
do_ioctl_ptr(WDIOC_KEEPALIVE, NULL);
printf("ioctl(-1, WDIOC_KEEPALIVE) = %s\n", errstr);
ioctl(-1, _IOC(_IOC_NONE, 'W', 0xff, 0), &val);
printf("ioctl(-1, _IOC(_IOC_NONE, %#x, 0xff, 0), %p) = %s\n",
'W', &val, errstr);
puts("+++ exited with 0 +++");
return 0;
}
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