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explain_fileno_or_die

explain_fileno_or_die

Section: C Library Functions (3)
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NAME

explain_fileno_or_die - check and reset stream status and report errors  

SYNOPSIS

#include <libexplain/fileno.h>

int explain_fileno_or_die(FILE *fp);
int explain_fileno_on_error(FILE *fp);  

DESCRIPTION

The explain_fileno_or_die function is used to call the fileno(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fileno(3) function, and then the process terminates by calling exit(EXIT_FAILURE).

The explain_fileno_on_error function is used to call the fileno(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_fileno(3) function, but still returns to the caller.

fp
The fp, exactly as to be passed to the fileno(3) system call.
 

RETURN VALUE

The explain_fileno_or_die function only returns on success, see fileno(3) for more information. On failure, prints an explanation and exits, it does not return.

The explain_fileno_on_error function always returns the value return by the wrapped fileno(3) system call.  

EXAMPLE

The explain_fileno_or_die function is intended to be used in a fashion similar to the following example:
explain_fileno_or_die(fp);
 

SEE ALSO

fileno(3)
check and reset stream status
explain_fileno(3)
explain fileno(3) errors
exit(2)
terminate the calling process
 

COPYRIGHT

libexplain version 0.37
Copyright (C) 2009 Peter Miller


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
EXAMPLE
SEE ALSO
COPYRIGHT

This document was created by man2html, using the manual pages.
Time: 21:45:48 GMT, April 16, 2011