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EXPLAIN_GETHOSTID_OR_DIE(3) - Linux man page online | Library functions

Get the unique identifier of the current host and report errors.

Chapter
explain_gethostid_or_die(3) Library Functions Manual explain_gethostid_or_die(3)

NAME

explain_gethostid_or_die - get the unique identifier of the current host and report errors

SYNOPSIS

#include <libexplain/gethostid.h> long explain_gethostid_or_die(void); long explain_gethostid_on_error(void);

DESCRIPTION

The explain_gethostid_or_die function is used to call the gethostid(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostid(3) function, and then the process terminates by calling exit(EXIT_FAILURE). The explain_gethostid_on_error function is used to call the gethostid(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_gethostid(3) function, but still returns to the caller.

RETURN VALUE

The explain_gethostid_or_die function only returns on success, see gethostid(3) for more information. On failure, prints an explanation and exits, it does not return. The explain_gethostid_on_error function always returns the value return by the wrapped gethostid(3) system call.

EXAMPLE

The explain_gethostid_or_die function is intended to be used in a fashion similar to the following example: long result = explain_gethostid_or_die();

SEE ALSO

gethostid(3) get the unique identifier of the current host explain_gethostid(3) explain gethostid(3) errors exit(2) terminate the calling process
libexplain version 1.4 Copyright (C) 2013 Peter Miller
explain_gethostid_or_die(3)
This manual Reference Other manuals
explain_gethostid_or_die(3) referred by explain(3) | explain_gethostid(3)
refer to _exit(2) | explain_gethostid(3) | gethostid(3)
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