error checking and system calls

[ultimateDesi]

I am trying to figure out, how i can find out where system call is made. Ones i figure out where system call is made i want to make sure error checking is done there. I have 3 c files i am working with and i need figure out where the system call is made. How can i test for error or system call is made?

I have few lines of code below, are these system calls? pipe, dup2?

if (pipefd[0] == PARSE_USEPIPE) {
pipe(pipefd);
setoutpipe = 1;

pid = fork();
if (!pid) { /* child */
if (setoutpipe) {
dup2(pipefd[1], 1); /* connect stdout to pipe if necessary */


}

if (!setoutpipe && (pipefd[0] > -1)) {
/* Need to set up an input pipe. */
dup2(pipefd[0], 0);

[hazel]

If you run your program using strace, it will trace and report all system calls to stderror.