SIMPLE SOLUTIONS

EXPLAIN_GETHOSTID_OR_DIE - reference manual online

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
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)