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| explain_signalfd_or_die(3) | FreeBSD Library Functions Manual | explain_signalfd_or_die(3) |
NAME
explain_signalfd_or_die - create signalable file descriptor and report errorsSYNOPSIS
#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);
DESCRIPTION
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.
EXAMPLE
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);
SEE ALSO
- signalfd(2)
- create a file descriptor for accepting signals
- explain_signalfd(3)
- explain signalfd(2) errors
- exit(2)
- terminate the calling process
COPYRIGHT
libexplain version 1.3Copyright (C) 2009 Peter Miller
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