| kern_event.c (70834) | kern_event.c (71500) |
|---|---|
| 1/*- 2 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * | 1/*- 2 * Copyright (c) 1999,2000 Jonathan Lemon <jlemon@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 9 unchanged lines hidden (view full) --- 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * |
| 26 * $FreeBSD: head/sys/kern/kern_event.c 70834 2001-01-09 04:33:49Z wollman $ | 26 * $FreeBSD: head/sys/kern/kern_event.c 71500 2001-01-24 00:35:12Z jhb $ |
| 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/kernel.h> 32#include <sys/proc.h> 33#include <sys/malloc.h> 34#include <sys/unistd.h> --- 175 unchanged lines hidden (view full) --- 210 * internal flag indicating registration done by kernel 211 */ 212 if (kn->kn_flags & EV_FLAG1) { 213 kn->kn_data = kn->kn_sdata; /* ppid */ 214 kn->kn_fflags = NOTE_CHILD; 215 kn->kn_flags &= ~EV_FLAG1; 216 } 217 | 27 */ 28 29#include <sys/param.h> 30#include <sys/systm.h> 31#include <sys/kernel.h> 32#include <sys/proc.h> 33#include <sys/malloc.h> 34#include <sys/unistd.h> --- 175 unchanged lines hidden (view full) --- 210 * internal flag indicating registration done by kernel 211 */ 212 if (kn->kn_flags & EV_FLAG1) { 213 kn->kn_data = kn->kn_sdata; /* ppid */ 214 kn->kn_fflags = NOTE_CHILD; 215 kn->kn_flags &= ~EV_FLAG1; 216 } 217 |
| 218 /* XXX lock the proc here while adding to the list? */ | 218 PROC_LOCK(p); |
| 219 SLIST_INSERT_HEAD(&p->p_klist, kn, kn_selnext); | 219 SLIST_INSERT_HEAD(&p->p_klist, kn, kn_selnext); |
| 220 PROC_UNLOCK(p); |
|
| 220 221 return (0); 222} 223 224/* 225 * The knote may be attached to a different process, which may exit, 226 * leaving nothing for the knote to be attached to. So when the process 227 * exits, the knote is marked as DETACHED and also flagged as ONESHOT so --- 4 unchanged lines hidden (view full) --- 232static void 233filt_procdetach(struct knote *kn) 234{ 235 struct proc *p = kn->kn_ptr.p_proc; 236 237 if (kn->kn_status & KN_DETACHED) 238 return; 239 | 221 222 return (0); 223} 224 225/* 226 * The knote may be attached to a different process, which may exit, 227 * leaving nothing for the knote to be attached to. So when the process 228 * exits, the knote is marked as DETACHED and also flagged as ONESHOT so --- 4 unchanged lines hidden (view full) --- 233static void 234filt_procdetach(struct knote *kn) 235{ 236 struct proc *p = kn->kn_ptr.p_proc; 237 238 if (kn->kn_status & KN_DETACHED) 239 return; 240 |
| 240 /* XXX locking? this might modify another process. */ | 241 PROC_LOCK(p); |
| 241 SLIST_REMOVE(&p->p_klist, kn, knote, kn_selnext); | 242 SLIST_REMOVE(&p->p_klist, kn, knote, kn_selnext); |
| 243 PROC_UNLOCK(p); |
|
| 242} 243 244static int 245filt_proc(struct knote *kn, long hint) 246{ 247 u_int event; 248 249 /* --- 676 unchanged lines hidden --- | 244} 245 246static int 247filt_proc(struct knote *kn, long hint) 248{ 249 u_int event; 250 251 /* --- 676 unchanged lines hidden --- |