| 1 | #include <stdio.h> |
| 2 | #include <unistd.h> |
| 3 | #include <sys/types.h> |
| 4 | |
| 5 | #include <ust/marker.h> |
| 6 | |
| 7 | int main(int argc, char **argv, char *env[]) |
| 8 | { |
| 9 | int result; |
| 10 | |
| 11 | if(argc < 2 ) { |
| 12 | fprintf(stderr, "usage: fork PROG_TO_EXEC\n"); |
| 13 | exit(1); |
| 14 | } |
| 15 | |
| 16 | printf("Fork test program, parent pid is %d\n", getpid()); |
| 17 | trace_mark(ust, before_fork, MARK_NOARGS); |
| 18 | |
| 19 | result = fork(); |
| 20 | if(result == -1) { |
| 21 | perror("fork"); |
| 22 | return 1; |
| 23 | } |
| 24 | if(result == 0) { |
| 25 | char *args[] = {"fork2", NULL}; |
| 26 | |
| 27 | printf("Child pid is %d\n", getpid()); |
| 28 | |
| 29 | trace_mark(ust, after_fork_child, MARK_NOARGS); |
| 30 | |
| 31 | trace_mark(ust, before_exec, "pid %d", getpid()); |
| 32 | |
| 33 | result = execve(argv[1], args, env); |
| 34 | if(result == -1) { |
| 35 | perror("execve"); |
| 36 | return 1; |
| 37 | } |
| 38 | |
| 39 | trace_mark(ust, after_exec, "pid %d", getpid()); |
| 40 | } |
| 41 | else { |
| 42 | trace_mark(ust, after_fork_parent, MARK_NOARGS); |
| 43 | } |
| 44 | |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | MARKER_LIB; |