[linux-2.6-block.git] / tools / testing / selftests / efivarfs / create-read.c

// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>

int main(int argc, char **argv)
{
	const char *path;
	char buf[4];
	int fd, rc;

	if (argc < 2) {
		fprintf(stderr, "usage: %s <path>\n", argv[0]);
		return EXIT_FAILURE;
	}

	path = argv[1];

	/* create a test variable */
	fd = open(path, O_RDWR | O_CREAT, 0600);
	if (fd < 0) {
		perror("open(O_WRONLY)");
		return EXIT_FAILURE;
	}

	rc = read(fd, buf, sizeof(buf));
	if (rc != 0) {
		fprintf(stderr, "Reading a new var should return EOF\n");
		return EXIT_FAILURE;
	}

	return EXIT_SUCCESS;
}
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
d974f67a JK	2	#include <stdio.h>
	3	#include <stdint.h>
	4	#include <stdlib.h>
	5	#include <unistd.h>
	6	#include <sys/types.h>
	7	#include <sys/stat.h>
	8	#include <fcntl.h>
	9	#include <errno.h>
	10	#include <string.h>
	11
	12	int main(int argc, char **argv)
	13	{
	14	const char *path;
	15	char buf[4];
	16	int fd, rc;
	17
	18	if (argc < 2) {
	19	fprintf(stderr, "usage: %s <path>\n", argv[0]);
	20	return EXIT_FAILURE;
	21	}
	22
	23	path = argv[1];
	24
	25	/* create a test variable */
	26	fd = open(path, O_RDWR \| O_CREAT, 0600);
	27	if (fd < 0) {
	28	perror("open(O_WRONLY)");
	29	return EXIT_FAILURE;
	30	}
	31
	32	rc = read(fd, buf, sizeof(buf));
	33	if (rc != 0) {
	34	fprintf(stderr, "Reading a new var should return EOF\n");
	35	return EXIT_FAILURE;
	36	}
	37
	38	return EXIT_SUCCESS;
	39	}