What will happen when a daemon process with no controlling terminal
tries to print to its stdout?
More specifically, consider the following pseudo code:
int main(void)
{
pid_t pid;
/* Assume that at this point stdin, stdout and stderr are open
* because the process was created by the shell.
*/
if( (pid = fork()) < 0 )
return FORK_FAILED;
else {
/* Child Process - Continue Execution */
fclose(stdin);
fclose(stderr);
setsid(); /* become session leader */
chdir("/"); /* change working directory */
umask(0); /* clear the file mode creation mask */
printf("No controlling terminal. What will happen here?")
return OK;
} else {
/* Parent Process - Exit & Return Control */
exit(0);
}
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