1 #include <fcntl.h> 2 #include <stdio.h> 3 #include <stdlib.h> 4 #include <sys/socket.h> 5 #include <unistd.h> 6 7 int main(int argc, char **argv) 8 { 9 int s; 10 11 if ((s = socket(PF_INET, SOCK_STREAM, 0)) < 0) 12 { 13 perror("socket"); 14 exit(1); 15 } 16 17 if (fcntl(s, F_SETOWN, getpid()) < 0) 18 { 19 perror("fcntl(F_SETOWN)"); 20 exit(1); 21 } 22 23 if (close(s) < 0) 24 { 25 perror("close"); 26 exit(1); 27 } 28 29 exit(0); 30 } 31
