explain_signalfd_or_die3
Create signalable file descriptor and report errors
Usage
#include <libexplain/signalfd.h>
int explain_signalfd_or_die(int fildes, const sigset_t *mask, int flags);
int explain_signalfd_on_error(int fildes, const sigset_t *mask, int flags);
Overview
The explain_signalfd_or_die function is used to call the signalfd(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_signalfd(3) function, and then the process terminates by calling exit(EXIT_FAILURE).
The explain_signalfd_on_error function is used to call the signalfd(2) system call. On failure an explanation will be printed to stderr, obtained from the explain_signalfd(3) function, but still returns to the caller.
fildes
|
The fildes, exactly as to be passed to the signalfd(2) system call. |
|---|---|
mask
|
The mask, exactly as to be passed to the signalfd(2) system call. |
flags
|
The flags, exactly as to be passed to the signalfd(2) system call. |
Return value
The explain_signalfd_or_die function only returns on success, see signalfd(2) for more information. On failure, prints an explanation and exits, it does not return.
The explain_signalfd_on_error function always returns the value return by the wrapped signalfd(2) system call.
Examples
The explain_signalfd_or_die function is intended to be used in a fashion similar to the following example:
int result = explain_signalfd_or_die(fildes, mask, flags);Releases
6 releases since Debian 7 (Wheezy); the text changed 1 time.