|explain_fcntl_or_die(3)||Library Functions Manual||explain_fcntl_or_die(3)|
explain_fcntl_or_die - manipulate a file descriptor and report errors
int explain_fcntl_or_die(int fildes, int command, long arg);
The explain_fcntl_or_die function is used to call the fcntl(2) system call. On failure an explanation will be printed to stderr, obtained from explain_fcntl(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
int result = explain_fcntl_or_die(fildes, command, arg);
- The fildes, exactly as to be passed to the fcntl(2) system call.
- The command, exactly as to be passed to the fcntl(2) system call.
- The arg, exactly as to be passed to the fcntl(2) system call.
- This function only returns on success, and it returns whatever was returned by the fcntl(2) call; depending on the command, this may have no use. On failure, prints an explanation and exits, it does not return.
libexplain version 1.4
Copyright (C) 2008 Peter Miller