| 1 | #include <errno.h> |
| 2 | #include <stdio.h> |
| 3 | #include <stdlib.h> |
| 4 | #include <string.h> |
| 5 | |
| 6 | #include <unistd.h> |
| 7 | #include <sys/wait.h> |
| 8 | |
| 9 | int main(int argc, char *argv[]) |
| 10 | { |
| 11 | pid_t kid; |
| 12 | int rc; |
| 13 | |
| 14 | if (argc < 2) { |
| 15 | fprintf(stderr, "usage: %s PROG [ARGS]\n", argv[0]); |
| 16 | exit(111); |
| 17 | } |
| 18 | kid = fork(); |
| 19 | if (kid < 0) { |
| 20 | fprintf(stderr, "%s: fork: %s\n", argv[0], strerror(errno)); |
| 21 | exit(111); |
| 22 | } |
| 23 | if (!kid) { |
| 24 | execvp(argv[1], argv + 1); |
| 25 | fprintf(stderr, "%s: exec %s: %s\n", argv[0], argv[1], strerror(errno)); |
| 26 | exit(111); |
| 27 | } |
| 28 | if (waitpid(kid, &rc, 0) <= 0) { |
| 29 | fprintf(stderr, "%s: wait: %s\n", argv[0], strerror(errno)); |
| 30 | exit(111); |
| 31 | } |
| 32 | if (!WIFEXITED(rc) || WEXITSTATUS(rc) == 111) |
| 33 | exit(111); |
| 34 | exit(WEXITSTATUS(rc) == 0 ? 100 : 0); |
| 35 | } |