explain_gethostbyname_or_die man page
explain_gethostbyname_or_die — get host address by host name and report errors
struct hostent *explain_gethostbyname_or_die(const char *name);
struct hostent *explain_gethostbyname_on_error(const char *name);
The explain_gethostbyname_or_die function is used to call the gethostbyname(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostbyname(3) function, and then the process terminates by calling
The explain_gethostbyname_on_error function is used to call the gethostbyname(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostbyname(3) function, but still returns to the caller.
The name, exactly as to be passed to the gethostbyname(3) system call.
The explain_gethostbyname_or_die function only returns on success, see gethostbyname(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_gethostbyname_on_error function always returns the value return by the wrapped gethostbyname(3) system call.
The explain_gethostbyname_or_die function is intended to be used in a fashion similar to the following example:
struct hostent *result = explain_gethostbyname_or_die(name);
get host address given host name
explain gethostbyname(3) errors
terminate the calling process
libexplain version 1.4
Copyright (C) 2013 Peter Miller