explain_fgets_or_die(3) [debian man page]

explain_fgets_or_die(3) 				     Library Functions Manual					   explain_fgets_or_die(3)

NAME

       explain_fgets_or_die - input of strings and report errors

SYNOPSIS

       #include <libexplain/fgets.h>
       char *explain_fgets_or_die(char *data, int data_size, FILE *fp);

DESCRIPTION

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

       This function is intended to be used in a fashion similar to the following example:
	      explain_fgets_or_die(data, data_size, fp);

       data    The data, exactly as to be passed to the fgets(3) system call.

       data_size
	       The data_size, exactly as to be passed to the fgets(3) system call.

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

       Returns:
	       This function only returns on success; data when a line is read, or NULL on end-of-file.  On failure,  prints  an  explanation  and
	       exits.

SEE ALSO

       fgets(3)
	       input of strings

       explain_fgets(3)
	       explain fgets(3) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2008 Peter Miller

															   explain_fgets_or_die(3)

explain_gethostname_or_die(3)				     Library Functions Manual				     explain_gethostname_or_die(3)

NAME

       explain_gethostname_or_die - get/set hostname and report errors

SYNOPSIS

       #include <libexplain/gethostname.h>
       void explain_gethostname_or_die(char *data, size_t data_size);
       intexplain_gethostname_on_error(char *data, size_t data_size);

DESCRIPTION

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

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

       data    The data, exactly as to be passed to the gethostname(2) system call.

       data_size
	       The data_size, exactly as to be passed to the gethostname(2) system call.

RETURN VALUE

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

       The explain_gethostname_on_error function always returns the value return by the wrapped gethostname(2) system call.

EXAMPLE

       The explain_gethostname_or_die function is intended to be used in a fashion similar to the following example:
	      explain_gethostname_or_die(data, data_size);

SEE ALSO

       gethostname(2)
	       get/set hostname

       explain_gethostname(3)
	       explain gethostname(2) errors

       exit(2) terminate the calling process

COPYRIGHT

       libexplain version 0.52
       Copyright (C) 2009 Peter Miller

														     explain_gethostname_or_die(3)