static int __init module_sender_init(void)
{
printk(KERN_ALERT "Sender module loaded...\n");
if (pid) {
printProcessInfo(pid);
}
return 0;
}
int main(int argc, char **argv)
{
time_t startTime,endTime;
pid_t forkPid;
startTime = time(NULL);
printf("Start time: %d\n", startTime);
forkPid = fork();//gets pid to determine if child or parent
if(forkPid<0) {
printf("fork error");
return -1;
} else if(forkPid ==0) {
int i;
for(i=0;i<99999999;i++){
}
printProcessInfo(forkPid);
} else {
printProcessInfo(forkPid);
endTime=time(NULL);
printf("End time: %d\n", endTime);
}
return 1;
}
//processes command by forking, redirecting i/o in the child process,
//and using execvp in the child process
int do_command(){
printf("Executing command %s", my_argv[0]);
if(my_argc > 1)
printf(" with arguments");
for(int i =1 ; i < my_argc; i++)
printf(" \"%s\"", my_argv[i]);
printf("\n");
if(gettimeofday(&start, NULL) <0)
perror("start gettimeofday");
if((pid = fork()) == -1){
perror("Fork ");
exit(1);
}
//actions to be performed in child process
if(pid == 0){
int i;
// I/O Redirection
if(numrs != 0){
for(i = 0; i!= numrs; ++i){
switch(redirect_check(my_argv1[i])){
case 1:
chop_char(my_argv1[i], 1); // "<filename"
redirect(my_argv1[i], 0, 0);
break;
case 2:
redirect(my_argv1[i +1], 0, 0); // "< filename"
break;
case 3:
chop_char(my_argv1[i], 1); // ">filename"
redirect(my_argv1[i], 1, 1);
break;
case 4: //"> filename"
redirect(my_argv1[i+1], 1, 1);
break;
case 5: //"2>filename"
chop_char(my_argv1[i], 2);
redirect(my_argv1[i], 2, 1);
break;
case 6: //"2> filename"
redirect(my_argv1[i+1], 2, 1);
break;
case 7: //">>filename"
chop_char(my_argv1[i], 2);
redirect(my_argv1[i], 1, 2);
break;
case 8: //">> filename"
redirect(my_argv1[i+1], 1, 2);
break;
case 9: //"2>>filename"
chop_char(my_argv1[i], 3);
redirect(my_argv1[i], 2, 2);
break;
case 10: //"2>> filename"
redirect(my_argv1[i+1], 2, 2);
break;
}
}
}
execvp(my_argv[0], my_argv);
perror("execvp");
exit(1);
}
//actions to be performed in parent process
if(pid != 0)
printProcessInfo();
return 0;
}
