2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthew Dillon <dillon@backplane.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * $DragonFly: src/usr.bin/monitor/monitor.c,v 1.1 2008/10/16 17:23:20 dillon Exp $
37 #include <sys/types.h>
38 #include <sys/event.h>
48 typedef struct monitor_elm {
53 static void usage(int exit_code);
54 static void monitor_add(const char *path);
55 static void monitor_events(void);
57 static int VerboseOpt;
63 static monitor_elm_t *Elms;
66 main(int ac, char **av)
71 while ((ch = getopt(ac, av, "qvx")) != -1) {
101 if ((KQueueFd = kqueue()) < 0) {
105 NumFiles = MaxFiles = 16;
106 Elms = calloc(MaxFiles, sizeof(monitor_elm_t));
108 for (i = 0; i < ac; ++i) {
115 } while (ExitOpt == 0);
121 monitor_add(const char *path)
127 elm = malloc(sizeof(*elm));
128 bzero(elm, sizeof(*elm));
130 elm->fd = open(path, O_RDONLY);
132 printf("%s\tnot found\n", path);
135 EV_SET(&kev, elm->fd, EVFILT_VNODE, EV_ADD|EV_ENABLE|EV_CLEAR,
136 NOTE_DELETE|NOTE_WRITE|NOTE_EXTEND|NOTE_ATTRIB|
137 NOTE_LINK|NOTE_RENAME|NOTE_REVOKE,
139 n = kevent(KQueueFd, &kev, 1, NULL, 0, NULL);
141 if (elm->fd >= NumFiles) {
142 MaxFiles = (elm->fd + 16) * 3 / 2;
143 Elms = realloc(Elms, MaxFiles * sizeof(elm));
144 bzero(&Elms[NumFiles], (NumFiles - MaxFiles) * sizeof(elm));
154 struct kevent kev_array[1];
162 n = kevent(KQueueFd, NULL, 0, kev_array, 1, NULL);
163 for (i = 0; i < n; ++i) {
165 elm = Elms[kev->ident];
166 printf("%-23s", elm->path);
167 if (VerboseOpt && fstat(kev->ident, &st) == 0 &&
168 S_ISREG(st.st_mode)) {
169 printf(" %10jd", (intmax_t)st.st_size);
171 while (QuietOpt == 0 && (bno = ffs(kev->fflags)) > 0) {
174 kev->fflags &= ~(1 << bno);
198 printf("%08x", 1 << bno);
211 "monitor [-vx] files...\n"
212 " -v Be more verbose\n"
213 " -x Exit after first event reported\n"