Contributors: 7
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Andrew Lutomirski |
150 |
69.12% |
2 |
22.22% |
| Tiezhu Yang |
29 |
13.36% |
1 |
11.11% |
| Greg Hackmann |
16 |
7.37% |
1 |
11.11% |
| Guo Ren |
9 |
4.15% |
1 |
11.11% |
| Shuah Khan |
8 |
3.69% |
1 |
11.11% |
| Mark Brown |
4 |
1.84% |
2 |
22.22% |
| Thomas Gleixner |
1 |
0.46% |
1 |
11.11% |
| Total |
217 |
|
9 |
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* vdso_test_gettimeofday.c: Sample code to test parse_vdso.c and
* vDSO gettimeofday()
* Copyright (c) 2014 Andy Lutomirski
*
* Compile with:
* gcc -std=gnu99 vdso_test_gettimeofday.c parse_vdso_gettimeofday.c
*
* Tested on x86, 32-bit and 64-bit. It may work on other architectures, too.
*/
#include <stdint.h>
#include <elf.h>
#include <stdio.h>
#include <sys/auxv.h>
#include <sys/time.h>
#include "../kselftest.h"
#include "parse_vdso.h"
#include "vdso_config.h"
int main(int argc, char **argv)
{
const char *version = versions[VDSO_VERSION];
const char **name = (const char **)&names[VDSO_NAMES];
unsigned long sysinfo_ehdr = getauxval(AT_SYSINFO_EHDR);
if (!sysinfo_ehdr) {
printf("AT_SYSINFO_EHDR is not present!\n");
return KSFT_SKIP;
}
vdso_init_from_sysinfo_ehdr(getauxval(AT_SYSINFO_EHDR));
/* Find gettimeofday. */
typedef long (*gtod_t)(struct timeval *tv, struct timezone *tz);
gtod_t gtod = (gtod_t)vdso_sym(version, name[0]);
if (!gtod) {
printf("Could not find %s\n", name[0]);
return KSFT_SKIP;
}
struct timeval tv;
long ret = gtod(&tv, 0);
if (ret == 0) {
printf("The time is %lld.%06lld\n",
(long long)tv.tv_sec, (long long)tv.tv_usec);
} else {
printf("%s failed\n", name[0]);
return KSFT_FAIL;
}
return 0;
}