EXPLAIN_GETHOSTBYNAME_OR_DIE(3) - Linux manual page online | Library functions
Get host address by host name and report errors.
Chapter
explain_gethostbyname_or_die(3) Library Functions Manual explain_gethostbyname_or_die(3)
NAME
explain_gethostbyname_or_die - get host address by host name and report errorsSYNOPSIS
#include <libexplain/gethostbyname.h> struct hostent *explain_gethostbyname_or_die(const char *name); struct hostent *explain_gethostbyname_on_error(const char *name);DESCRIPTION
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_geth‐ ostbyname(3) function, and then the process terminates by calling exit(EXIT_FAILURE). 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_geth‐ ostbyname(3) function, but still returns to the caller. name The name, exactly as to be passed to the gethostbyname(3) system call.RETURN VALUE
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.EXAMPLE
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);SEE ALSO
gethostbyname(3) get host address given host name explain_gethostbyname(3) explain gethostbyname(3) errors exit(2) terminate the calling processCOPYRIGHT
libexplain version 1.4 Copyright (C) 2013 Peter Miller| This manual | Reference | Other manuals |
|---|---|---|
| explain_gethostbyname_or_die(3) | referred by | explain(3) | explain_gethostbyname(3) |
| refer to | _exit(2) | explain_gethostbyname(3) | gethostbyname(3) |