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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");
| return EXIT_FAILURE;
| }
|
| return EXIT_SUCCESS;
| }
|
|
