| explain_gethostname_or_die(3) | Library Functions Manual | explain_gethostname_or_die(3) |
explain_gethostname_or_die - get/set hostname and report errors
#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);
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.
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.
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);
libexplain version 1.4
Copyright (C) 2009 Peter Miller