|explain_dirfd_or_die(3)||Library Functions Manual||explain_dirfd_or_die(3)|
explain_dirfd_or_die - get directory stream file descriptor and report errors
int explain_dirfd_or_die(DIR *dir);
int explain_dirfd_on_error(DIR *dir);
The explain_dirfd_or_die function is used to call the dirfd(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_dirfd(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_dirfd_on_error function is used to call the dirfd(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_dirfd(3) function, but still returns to the caller.
The explain_dirfd_or_die function only returns on success, see dirfd(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_dirfd_on_error function always returns the value return by the wrapped dirfd(3) system call.
The explain_dirfd_or_die function is intended to be used in a fashion similar to the following example:
int result = explain_dirfd_or_die(dir);
libexplain version 1.4
Copyright (C) 2009 Peter Miller