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 0.19
Copyright (C) 2009 Peter Miller
explain_gethostname_or_die(3)