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// 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");
close(fd);
return EXIT_FAILURE;
}
close(fd);
return EXIT_SUCCESS;
}
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