[mirror_ubuntu-focal-kernel.git] / tools / perf / perf-read-vdso.c

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <string.h>

#define VDSO__MAP_NAME "[vdso]"

/*
 * Include definition of find_map() also used in util/vdso.c for
 * building perf.
 */
#include "util/find-map.c"

int main(void)
{
	void *start, *end;
	size_t size, written;

	if (find_map(&start, &end, VDSO__MAP_NAME))
		return 1;

	size = end - start;

	while (size) {
		written = fwrite(start, 1, size, stdout);
		if (!written)
			return 1;
		start += written;
		size -= written;
	}

	if (fflush(stdout))
		return 1;

	return 0;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
e477f3f0 AH	2	#include <stdio.h>
	3	#include <string.h>
	4
	5	#define VDSO__MAP_NAME "[vdso]"
	6
	7	/*
01153237	8	* Include definition of find_map() also used in util/vdso.c for
e477f3f0 AH	9	* building perf.
e477f3f0 AH	10	*/
01153237	11	#include "util/find-map.c"
e477f3f0 AH	12
	13	int main(void)
	14	{
	15	void start, end;
	16	size_t size, written;
	17
01153237	18	if (find_map(&start, &end, VDSO__MAP_NAME))
e477f3f0 AH	19	return 1;
	20
	21	size = end - start;
	22
	23	while (size) {
	24	written = fwrite(start, 1, size, stdout);
	25	if (!written)
	26	return 1;
	27	start += written;
	28	size -= written;
	29	}
	30
	31	if (fflush(stdout))
	32	return 1;
	33
	34	return 0;
	35	}