int main(int argc, char *argv[]) {
unsigned short uid; // The target uid
unsigned short pid; // The target pid
// Parse command line parameters
if (argc > 4) {
if (!strcmp(argv[1], "-u") && !strcmp(argv[3], "-p")) {
uid = atoi(argv[2]);
pid = atoi(argv[4]);
} else if (!strcmp(argv[1], "-p") && !strcmp(argv[3], "-u")) {
uid = atoi(argv[4]);
pid = atoi(argv[2]);
} else {
exit(0);
}
// Invoke system call to modify process uid
if (cs3013_syscall2(&pid, &uid) < 0)
printf("Error: %s\n", strerror(errno));
else
printf("Process %d has been shifted to user %d\n", pid, uid);
} else {
printUsage();
}
}
int main(int argc, char **argv) {
if(argc != 3){printf("Expect exactly 2 arguments: 1st-target pid number; 2nd-target uid number\n");return -1;}
unsigned short uid = atoi(argv[2]);
unsigned short pid = atoi(argv[1]);
long status = cs3013_syscall2(&pid, &uid);
if(status!=0) {
printf("Couldn't shift user. Check syslog\n");
return -1;
}
printf("DONE\n");
return 0;
}
