From e8691a5cc2cdda30b2aba2817667a6b41b2ac9bc Mon Sep 17 00:00:00 2001
From: Kris Kennaway <kris@FreeBSD.org>
Date: Tue, 25 Apr 2000 08:04:55 +0000
Subject: [PATCH] On FreeBSD 5.0, use the new kqueue() notification system to
 monitor for directory changes. This cuts CPU usage from 100% down to about
 0.1% as well as improving the reliability of change monitoring.

---
 security/l0pht-watch/files/patch-aa |  4 +-
 security/l0pht-watch/files/patch-ab | 74 +++++++++++++++++++++++++++++
 security/l0pht-watch/files/patch-ac | 30 ++++++++++++
 security/l0pht-watch/files/patch-ad | 11 +++++
 4 files changed, 117 insertions(+), 2 deletions(-)
 create mode 100644 security/l0pht-watch/files/patch-ab
 create mode 100644 security/l0pht-watch/files/patch-ac
 create mode 100644 security/l0pht-watch/files/patch-ad

diff --git a/security/l0pht-watch/files/patch-aa b/security/l0pht-watch/files/patch-aa
index 720aa31199c8..71bee0618872 100644
--- a/security/l0pht-watch/files/patch-aa
+++ b/security/l0pht-watch/files/patch-aa
@@ -1,5 +1,5 @@
 --- Makefile.orig	Thu Sep 23 10:18:18 1999
-+++ Makefile	Sat Dec  4 00:53:05 1999
++++ Makefile	Tue Apr 25 00:30:11 2000
 @@ -9,12 +9,13 @@
  # debugging
  # DFLAGS = -DTEST -DDEBUG
@@ -21,7 +21,7 @@
  OpenBSD:
  	make -e $(ALL) $(MFLAGS) \
 -	XFLAGS='-DBSD -DREGEX -DREGCOMP_3C' CC="gcc $(CFLAGS)" STATIC=-static
-+	XFLAGS='-DBSD -DREGEX -DREGCOMP_3C' CC="$(CC) $(CFLAGS)" \
++	XFLAGS='-DREGEX -DREGCOMP_3C' CC="$(CC) $(CFLAGS)" \
 +	STATIC=-static
  
  generic:
diff --git a/security/l0pht-watch/files/patch-ab b/security/l0pht-watch/files/patch-ab
new file mode 100644
index 000000000000..ce4332eec381
--- /dev/null
+++ b/security/l0pht-watch/files/patch-ab
@@ -0,0 +1,74 @@
+--- check_tmp.c.orig	Fri Sep 24 13:33:35 1999
++++ check_tmp.c	Tue Apr 25 00:57:56 2000
+@@ -38,6 +38,13 @@
+ #endif
+ #endif
+   
++#if __FreeBSD_version >= 500001
++  struct kevent ev;
++  struct kevent *evp;
++  int fd;
++  struct timespec ts = { 0, 0 };
++  int kq = -1;
++#endif
+ 
+   struct listStruct *list = NULL;
+ 
+@@ -178,6 +185,22 @@
+     exit(1);
+   }
+ 
++#if __FreeBSD_version >= 500001
++  /* Set up the KQ on the target directory */
++  fd = dirfd(dirp);
++
++  kq = kqueue();
++  if (kq < 0)
++    err(1, "kqueue");
++
++  ev.ident = fd;
++  ev.filter = EVFILT_VNODE;
++  ev.flags = EV_ADD | EV_ENABLE | EV_CLEAR;
++  ev.fflags = NOTE_WRITE;
++  evp = &ev;
++  kevent(kq, 1, &evp, 0, NULL, &ts);
++#endif
++
+   /* steup the first element of the list */
+   while ((dp = readdir(dirp)) != NULL){
+     if (!list) /* first time */
+@@ -266,6 +289,10 @@
+   rewinddir(dirp);
+ 
+   while (1){
++
++#if __FreeBSD_version >= 500001
++    if (ev.fflags & NOTE_WRITE) {
++#endif
+     while ((dp = readdir(dirp)) != NULL){
+       if (!(checknode(list, watchdir, dp->d_name))){
+         if (replacewatchflag){
+@@ -352,11 +379,22 @@
+       /* closedir(dirp); */
+       }
+     }
+-#ifdef 0
++#if 0
+     walklist(list);
+ #endif
+     list = prunelist(list); 
+     rewinddir(dirp);
++
++#if __FreeBSD_version >= 500001
++    /* Reset event so we don't trigger on the rewinddir */
++    kevent(kq, 1, &evp, 0, NULL, &ts);
++
++    /* Block until the directory changes */
++    if (kevent(kq, 0, NULL, 1, &ev, NULL) < 0)
++      err(1, "kevent");
++
++  }
++#endif
+   }
+ /*   closedir(dirp); */
+ 
diff --git a/security/l0pht-watch/files/patch-ac b/security/l0pht-watch/files/patch-ac
new file mode 100644
index 000000000000..cc663e00f43b
--- /dev/null
+++ b/security/l0pht-watch/files/patch-ac
@@ -0,0 +1,30 @@
+--- check_tmp.h.orig	Thu Dec 24 07:40:13 1998
++++ check_tmp.h	Tue Apr 25 00:29:52 2000
+@@ -1,16 +1,22 @@
+ #ifndef __CHECK_TMP_H
+ #define __CHECK_TMP_H
+ 
+-#include <stdlib.h>
+-#include <stdio.h>
+ #include <sys/types.h>
++#include <sys/mman.h>
+ #include <sys/stat.h>
++#include <sys/param.h>
+ #include <dirent.h>
+-#include <pwd.h>
+-#include <grp.h>
+ #include <fcntl.h>
+-#include <sys/mman.h>
++#include <grp.h>
++#include <pwd.h>
++#include <stdlib.h>
++#include <stdio.h>
+ #include <unistd.h>
++#if __FreeBSD_version >= 500001
++#include <sys/event.h>
++#include <sys/time.h>
++#include <err.h>
++#endif
+ 
+ #if defined (REGEXPR_3G)
+ #include <regexpr.h>
diff --git a/security/l0pht-watch/files/patch-ad b/security/l0pht-watch/files/patch-ad
new file mode 100644
index 000000000000..dde9441b1e9d
--- /dev/null
+++ b/security/l0pht-watch/files/patch-ad
@@ -0,0 +1,11 @@
+--- list_utils.c.orig	Tue Apr 25 00:58:27 2000
++++ list_utils.c	Tue Apr 25 00:58:33 2000
+@@ -168,7 +168,7 @@
+ 
+   
+ 
+-#ifdef 0
++#if 0
+   printf("%-11s %-2d %-8s %-8s %-6ld %-10s %-10s\n", filemodes,
+           (int)list->statbuf.st_nlink, username, groupname, 
+           list->statbuf.st_size, timehold, list->filename);