NAME¶
explain_fdopendir_or_die - open a directory and report errors
SYNOPSIS¶
#include <libexplain/fdopendir.h>
DIR *explain_fdopendir_or_die(int fildes);
DIR *explain_fdopendir_on_error(int fildes);
DESCRIPTION¶
The
explain_fdopendir_or_die function is used to call the
fdopendir(3) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_fdopendir(3) function, and
then the process terminates by calling exit(EXIT_FAILURE).
The
explain_fdopendir_on_error function is used to call the
fdopendir(3) system call. On failure an explanation will be printed to
stderr, obtained from the
explain_fdopendir(3) function, but
still returns to the caller.
- fildes
- The fildes, exactly as to be passed to the
fdopendir(3) system call.
RETURN VALUE¶
The
explain_fdopendir_or_die function only returns on success, see
fdopendir(3) for more information. On failure, prints an explanation
and exits, it does not return.
The
explain_fdopendir_on_error function always returns the value return
by the wrapped
fdopendir(3) system call.
EXAMPLE¶
The
explain_fdopendir_or_die function is intended to be used in a fashion
similar to the following example:
DIR *result = explain_fdopendir_or_die(fildes);
SEE ALSO¶
- fdopendir(3)
- open a directory
- explain_fdopendir(3)
- explain fdopendir(3) errors
- exit(2)
- terminate the calling process
COPYRIGHT¶
libexplain version 0.52
Copyright (C) 2009 Peter Miller