explain_getw_or_die(3) - Linux man page
Name
explain_getw_or_die - input a word (int) and report errors
Synopsis
#include <libexplain/getw.h>
int explain_getw_or_die(FILE *fp);
int explain_getw_on_error(FILE *fp);
Description
The explain_getw_or_die function is used to call the getw(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getw(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_getw_on_error function is used to call the getw(3) system call. On failure an explanation will be printed to stderr, obtained from the explain_getw(3) function, but still returns to the caller.
- fp
The fp, exactly as to be passed to the getw(3) system call.
Return Value
The explain_getw_or_die function only returns on success, see getw(3) for more information. On failure, prints an explanation and exits, it does not return.
The explain_getw_on_error function always returns the value return by the wrapped getw(3) system call.
Example
The explain_getw_or_die function is intended to be used in a fashion similar to the following example:
-
int result = explain_getw_or_die(fp);
See Also
- getw(3)
input a word (int)
- explain_getw(3)
- explain getw(3) errors
- exit(2)
terminate the calling process
Copyright
libexplain version 0.52
Copyright © 2010 Peter Miller