explain_telldir_or_die - current location in directory and report errors
#include <libexplain/telldir.h>
off_t explain_telldir_or_die(DIR *dir);
off_t explain_telldir_on_error(DIR *dir);
The
explain_telldir_or_die function is used to call the
telldir(3)
system call. On failure an explanation will be printed to
stderr,
obtained from the
explain_telldir(3) function, and then the process
terminates by calling exit(EXIT_FAILURE).
The
explain_telldir_on_error function is used to call the
telldir(3) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_telldir(3) function, but still
returns to the caller.
- dir
- The dir, exactly as to be passed to the telldir(3) system
call.
The
explain_telldir_or_die function only returns on success, see
telldir(3) for more information. On failure, prints an explanation and
exits, it does not return.
The
explain_telldir_on_error function always returns the value return by
the wrapped
telldir(3) system call.
The
explain_telldir_or_die function is intended to be used in a fashion
similar to the following example:
off_t result = explain_telldir_or_die(dir);
- telldir(3)
- return current location in directory stream
- explain_telldir(3)
- explain telldir(3) errors
- exit(2)
- terminate the calling process
libexplain version 1.3
Copyright (C) 2009 Peter Miller