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explain_ustat_or_die(3)	   Library Functions Manual    explain_ustat_or_die(3)

NAME
       explain_ustat_or_die - get file system statistics and report errors

SYNOPSIS
       #include	<libexplain/ustat.h>
       void explain_ustat_or_die(dev_t dev, struct ustat *ubuf);
       int explain_ustat_on_error(dev_t	dev, struct ustat *ubuf);

DESCRIPTION
       The  explain_ustat_or_die  function is used to call the ustat(2)	system
       call. On	failure	an explanation will be	printed	 to  stderr,  obtained
       from  the explain_ustat(3) function, and	then the process terminates by
       calling exit(EXIT_FAILURE).

       The explain_ustat_on_error function is used to call the ustat(2)	system
       call.  On  failure  an  explanation will	be printed to stderr, obtained
       from the	explain_ustat(3) function, but still returns to	the caller.

       dev     The dev,	exactly	as to be passed	to the ustat(2)	system call.

       ubuf    The ubuf, exactly as to be passed to the	ustat(2) system	call.

RETURN VALUE
       The explain_ustat_or_die	function only returns on success, see ustat(2)
       for  more  information. On failure, prints an explanation and exits, it
       does not	return.

       The explain_ustat_on_error function always returns the value return  by
       the wrapped ustat(2) system call.

EXAMPLE
       The  explain_ustat_or_die  function is intended to be used in a fashion
       similar to the following	example:
	      explain_ustat_or_die(dev,	ubuf);

SEE ALSO
       ustat(2)
	       get file	system statistics

       explain_ustat(3)
	       explain ustat(2)	errors

       exit(2) terminate the calling process

COPYRIGHT
       libexplain version 1.3
       Copyright (C) 2009 Peter	Miller

						       explain_ustat_or_die(3)

NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE | SEE ALSO | COPYRIGHT

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