explain_gethostname_or_die(3) - Linux man page
Name
explain_gethostname_or_die - get/set hostname and report errors
Synopsis
#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);
Description
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.
- data
The data, exactly as to be passed to the gethostname(2) system call.
- data_size
- The data_size, exactly as to be passed to the gethostname(2) system call.
Return Value
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.
Example
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);
See Also
gethostname(2)
- get/set hostname
- explain_gethostname(3)
- explain gethostname(2) errors
- exit(2)
terminate the calling process
Copyright
libexplain version 0.52
Copyright © 2009 Peter Miller