| Jeremy Kerr | d974f67 | 2013-02-27 17:05:55 -0800 | [diff] [blame] | 1 | #include <stdio.h> |
| 2 | #include <stdint.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <unistd.h> |
| 5 | #include <sys/types.h> |
| 6 | #include <sys/stat.h> |
| 7 | #include <fcntl.h> |
| 8 | #include <errno.h> |
| 9 | #include <string.h> |
| 10 | |
| 11 | int main(int argc, char **argv) |
| 12 | { |
| 13 | const char *path; |
| 14 | char buf[4]; |
| 15 | int fd, rc; |
| 16 | |
| 17 | if (argc < 2) { |
| 18 | fprintf(stderr, "usage: %s <path>\n", argv[0]); |
| 19 | return EXIT_FAILURE; |
| 20 | } |
| 21 | |
| 22 | path = argv[1]; |
| 23 | |
| 24 | /* create a test variable */ |
| 25 | fd = open(path, O_RDWR | O_CREAT, 0600); |
| 26 | if (fd < 0) { |
| 27 | perror("open(O_WRONLY)"); |
| 28 | return EXIT_FAILURE; |
| 29 | } |
| 30 | |
| 31 | rc = read(fd, buf, sizeof(buf)); |
| 32 | if (rc != 0) { |
| 33 | fprintf(stderr, "Reading a new var should return EOF\n"); |
| 34 | return EXIT_FAILURE; |
| 35 | } |
| 36 | |
| 37 | return EXIT_SUCCESS; |
| 38 | } |