/usr/include/ntirpc/misc/event.h is in libntirpc-dev 1.3.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (c) 1999,2000,2001 Jonathan Lemon <jlemon@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/sys/event.h,v 1.22 2003/02/02 19:39:51 nectar Exp $
*/
#ifndef _TIRPC_EVENT_H_
#define _TIRPC_EVENT_H_
#define EVFILT_READ (-1)
#define EVFILT_WRITE (-2)
#define EVFILT_AIO (-3) /* attached to aio requests */
#define EVFILT_VNODE (-4) /* attached to vnodes */
#define EVFILT_PROC (-5) /* attached to struct proc */
#define EVFILT_SIGNAL (-6) /* attached to struct proc */
#define EVFILT_TIMER (-7) /* timers */
#define EVFILT_NETDEV (-8) /* network devices */
#define EVFILT_SYSCOUNT 8
#define EV_SET(kevp_, a, b, c, d, e, f) do { \
struct kevent *kevp = (kevp_); \
(kevp)->ident = (a); \
(kevp)->filter = (b); \
(kevp)->flags = (c); \
(kevp)->fflags = (d); \
(kevp)->data = (e); \
(kevp)->udata = (f); \
} while (0)
#include <stdint.h>
struct kevent {
uintptr_t ident; /* identifier for this event */
short filter; /* filter for event */
u_short flags;
u_int fflags;
intptr_t data;
void *udata; /* opaque user data identifier */
};
/* actions */
#define EV_ADD 0x0001 /* add event to kq (implies enable) */
#define EV_DELETE 0x0002 /* delete event from kq */
#define EV_ENABLE 0x0004 /* enable event */
#define EV_DISABLE 0x0008 /* disable event (not reported) */
/* flags */
#define EV_ONESHOT 0x0010 /* only report one occurrence */
#define EV_CLEAR 0x0020 /* clear event state after reporting */
#define EV_SYSFLAGS 0xF000 /* reserved by system */
#define EV_FLAG1 0x2000 /* filter-specific flag */
/* returned values */
#define EV_EOF 0x8000 /* EOF detected */
#define EV_ERROR 0x4000 /* error, data contains errno */
/*
* data/hint flags for EVFILT_{READ|WRITE}, shared with userspace
*/
#define NOTE_LOWAT 0x0001 /* low water mark */
/*
* data/hint flags for EVFILT_VNODE, shared with userspace
*/
#define NOTE_DELETE 0x0001 /* vnode was removed */
#define NOTE_WRITE 0x0002 /* data contents changed */
#define NOTE_EXTEND 0x0004 /* size increased */
#define NOTE_ATTRIB 0x0008 /* attributes changed */
#define NOTE_LINK 0x0010 /* link count changed */
#define NOTE_RENAME 0x0020 /* vnode was renamed */
#define NOTE_REVOKE 0x0040 /* vnode access was revoked */
/*
* data/hint flags for EVFILT_PROC, shared with userspace
*/
#define NOTE_EXIT 0x80000000 /* process exited */
#define NOTE_FORK 0x40000000 /* process forked */
#define NOTE_EXEC 0x20000000 /* process exec'd */
#define NOTE_PCTRLMASK 0xf0000000 /* mask for hint bits */
#define NOTE_PDATAMASK 0x000fffff /* mask for pid */
/* additional flags for EVFILT_PROC */
#define NOTE_TRACK 0x00000001 /* follow across forks */
#define NOTE_TRACKERR 0x00000002 /* could not track child */
#define NOTE_CHILD 0x00000004 /* am a child process */
/*
* data/hint flags for EVFILT_NETDEV, shared with userspace
*/
#define NOTE_LINKUP 0x0001 /* link is up */
#define NOTE_LINKDOWN 0x0002 /* link is down */
#define NOTE_LINKINV 0x0004 /* link state is invalid */
/*
* This is currently visible to userland to work around broken
* programs which pull in <sys/proc.h>.
*/
#include <misc/queue.h>
struct knote;
SLIST_HEAD(klist, knote);
#ifdef _KERNEL
#ifdef MALLOC_DECLARE
MALLOC_DECLARE(M_KQUEUE);
#endif
#define KNOTE(list, hint) if ((list) != NULL) knote(list, hint)
/*
* Flag indicating hint is a signal. Used by EVFILT_SIGNAL, and also
* shared by EVFILT_PROC (all knotes attached to p->p_klist)
*/
#define NOTE_SIGNAL 0x08000000
struct filterops {
int f_isfd; /* true if ident == filedescriptor */
int (*f_attach) (struct knote *kn);
void (*f_detach) (struct knote *kn);
int (*f_event) (struct knote *kn, long hint);
};
struct knote {
SLIST_ENTRY(knote) kn_link; /* for fd */
SLIST_ENTRY(knote) kn_selnext; /* for struct selinfo */
TAILQ_ENTRY(knote) kn_tqe;
struct kqueue *kn_kq; /* which queue we are on */
struct kevent kn_kevent;
int kn_status;
int kn_sfflags; /* saved filter flags */
intptr_t kn_sdata; /* saved data field */
union {
struct file *p_fp; /* file data pointer */
struct proc *p_proc; /* proc pointer */
} kn_ptr;
struct filterops *kn_fop;
void *kn_hook;
#define KN_ACTIVE 0x01 /* event has been triggered */
#define KN_QUEUED 0x02 /* event is on queue */
#define KN_DISABLED 0x04 /* event is disabled */
#define KN_DETACHED 0x08 /* knote is detached */
#define kn_id kn_kevent.ident
#define kn_filter kn_kevent.filter
#define kn_flags kn_kevent.flags
#define kn_fflags kn_kevent.fflags
#define kn_data kn_kevent.data
#define kn_fp kn_ptr.p_fp
};
struct thread;
struct proc;
extern void knote(struct klist *list, long hint);
extern void knote_remove(struct thread *p, struct klist *list);
extern void knote_fdclose(struct thread *p, int fd);
extern int kqueue_register(struct kqueue *kq, struct kevent *kev,
struct thread *p);
extern int kqueue_add_filteropts(int filt, struct filterops *filtops);
extern int kqueue_del_filteropts(int filt);
#else /* !_KERNEL */
#include <sys/cdefs.h>
struct timespec;
__BEGIN_DECLS int kqueue(void);
int kevent(int kq, const struct kevent *changelist, int nchanges,
struct kevent *eventlist, int nevents,
const struct timespec *timeout);
__END_DECLS
#endif /* !_KERNEL */
#endif /* !_TIRPC_EVENT_H_ */
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