Commit 43707960 authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Gleixner
Browse files

selftests: vDSO: vdso_standalone_test_x86: Replace source file with symlink 



With the switch over to nolibc the source file vdso_standalone_test_x86.c
was intended to be replaced with a symlink to vdso_test_gettimeofday.c.
This was the patch that was submitted to LKML, but during application the
symlink was replaced by a textual copy of the linked-to file.

Having two copies introduces the possibility of divergence and increases
maintenance burden, switch back to a symlink.

Fixes: 8770a918 ("selftests: vDSO: vdso_standalone_test_x86: Switch to nolibc")
Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/lkml/20250226-parse_vdso-nolibc-v2-16-28e14e031ed8@linutronix.de/
Link: https://lore.kernel.org/all/20250611-selftests-vdso-fixes-v3-9-e62e37a6bcf5@linutronix.de
parent 1158220b

tools/testing/selftests/vDSO/vdso_standalone_test_x86.c

deleted100644 → 0
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// 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 <stdio.h>

#ifndef NOLIBC

#include <sys/auxv.h>

#include <sys/time.h>

#endif



#include "../kselftest.h"

#include "parse_vdso.h"

#include "vdso_config.h"

#include "vdso_call.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 = VDSO_CALL(gtod, 2, &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;

}

tools/testing/selftests/vDSO/vdso_standalone_test_x86.c

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vdso_test_gettimeofday.c
 
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tools/testing/selftests/vDSO/vdso_standalone_test_x86.c

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File changed.File mode changed from 100644 to 120000.

Contains only whitespace changes.