11e3b54fcSMatthew Dillon /*
21e3b54fcSMatthew Dillon * Copyright (c) 2008 The DragonFly Project. All rights reserved.
31e3b54fcSMatthew Dillon *
41e3b54fcSMatthew Dillon * This code is derived from software contributed to The DragonFly Project
51e3b54fcSMatthew Dillon * by Matthew Dillon <dillon@backplane.com>
61e3b54fcSMatthew Dillon *
71e3b54fcSMatthew Dillon * Redistribution and use in source and binary forms, with or without
81e3b54fcSMatthew Dillon * modification, are permitted provided that the following conditions
91e3b54fcSMatthew Dillon * are met:
101e3b54fcSMatthew Dillon *
111e3b54fcSMatthew Dillon * 1. Redistributions of source code must retain the above copyright
121e3b54fcSMatthew Dillon * notice, this list of conditions and the following disclaimer.
131e3b54fcSMatthew Dillon * 2. Redistributions in binary form must reproduce the above copyright
141e3b54fcSMatthew Dillon * notice, this list of conditions and the following disclaimer in
151e3b54fcSMatthew Dillon * the documentation and/or other materials provided with the
161e3b54fcSMatthew Dillon * distribution.
171e3b54fcSMatthew Dillon * 3. Neither the name of The DragonFly Project nor the names of its
181e3b54fcSMatthew Dillon * contributors may be used to endorse or promote products derived
191e3b54fcSMatthew Dillon * from this software without specific, prior written permission.
201e3b54fcSMatthew Dillon *
211e3b54fcSMatthew Dillon * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
221e3b54fcSMatthew Dillon * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
231e3b54fcSMatthew Dillon * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
241e3b54fcSMatthew Dillon * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
251e3b54fcSMatthew Dillon * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
261e3b54fcSMatthew Dillon * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
271e3b54fcSMatthew Dillon * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
281e3b54fcSMatthew Dillon * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
291e3b54fcSMatthew Dillon * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
301e3b54fcSMatthew Dillon * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
311e3b54fcSMatthew Dillon * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
321e3b54fcSMatthew Dillon * SUCH DAMAGE.
331e3b54fcSMatthew Dillon */
341e3b54fcSMatthew Dillon
351e3b54fcSMatthew Dillon #include <sys/types.h>
361e3b54fcSMatthew Dillon #include <sys/event.h>
371e3b54fcSMatthew Dillon #include <sys/time.h>
381e3b54fcSMatthew Dillon #include <sys/stat.h>
391e3b54fcSMatthew Dillon #include <stdio.h>
401e3b54fcSMatthew Dillon #include <stdarg.h>
411e3b54fcSMatthew Dillon #include <stdlib.h>
421e3b54fcSMatthew Dillon #include <unistd.h>
431e3b54fcSMatthew Dillon #include <string.h>
441e3b54fcSMatthew Dillon #include <fcntl.h>
451e3b54fcSMatthew Dillon
461e3b54fcSMatthew Dillon typedef struct monitor_elm {
471e3b54fcSMatthew Dillon const char *path;
481e3b54fcSMatthew Dillon int fd;
491e3b54fcSMatthew Dillon } *monitor_elm_t;
501e3b54fcSMatthew Dillon
511e3b54fcSMatthew Dillon static void usage(int exit_code);
521e3b54fcSMatthew Dillon static void monitor_add(const char *path);
531e3b54fcSMatthew Dillon static void monitor_events(void);
541e3b54fcSMatthew Dillon
551e3b54fcSMatthew Dillon static int VerboseOpt;
561e3b54fcSMatthew Dillon static int QuietOpt;
571e3b54fcSMatthew Dillon static int ExitOpt;
581e3b54fcSMatthew Dillon static int KQueueFd;
591e3b54fcSMatthew Dillon static int NumFiles;
601e3b54fcSMatthew Dillon static int MaxFiles;
611e3b54fcSMatthew Dillon static monitor_elm_t *Elms;
621e3b54fcSMatthew Dillon
631e3b54fcSMatthew Dillon int
main(int ac,char ** av)641e3b54fcSMatthew Dillon main(int ac, char **av)
651e3b54fcSMatthew Dillon {
661e3b54fcSMatthew Dillon int ch;
671e3b54fcSMatthew Dillon int i;
681e3b54fcSMatthew Dillon
691e3b54fcSMatthew Dillon while ((ch = getopt(ac, av, "qvx")) != -1) {
701e3b54fcSMatthew Dillon switch (ch) {
711e3b54fcSMatthew Dillon case 'q':
721e3b54fcSMatthew Dillon if (VerboseOpt > 0)
731e3b54fcSMatthew Dillon --VerboseOpt;
741e3b54fcSMatthew Dillon else
751e3b54fcSMatthew Dillon ++QuietOpt;
761e3b54fcSMatthew Dillon break;
771e3b54fcSMatthew Dillon case 'v':
781e3b54fcSMatthew Dillon if (QuietOpt > 0)
791e3b54fcSMatthew Dillon --QuietOpt;
801e3b54fcSMatthew Dillon else
811e3b54fcSMatthew Dillon ++VerboseOpt;
821e3b54fcSMatthew Dillon break;
831e3b54fcSMatthew Dillon case 'x':
841e3b54fcSMatthew Dillon ExitOpt = 1;
851e3b54fcSMatthew Dillon break;
861e3b54fcSMatthew Dillon default:
871e3b54fcSMatthew Dillon usage(1);
881e3b54fcSMatthew Dillon /* not reached */
891e3b54fcSMatthew Dillon }
901e3b54fcSMatthew Dillon }
911e3b54fcSMatthew Dillon ac -= optind;
921e3b54fcSMatthew Dillon av += optind;
931e3b54fcSMatthew Dillon
941e3b54fcSMatthew Dillon if (ac < 1) {
951e3b54fcSMatthew Dillon usage(1);
961e3b54fcSMatthew Dillon /* not reached */
971e3b54fcSMatthew Dillon }
981e3b54fcSMatthew Dillon
991e3b54fcSMatthew Dillon if ((KQueueFd = kqueue()) < 0) {
1001e3b54fcSMatthew Dillon perror("kqueue");
1011e3b54fcSMatthew Dillon exit(1);
1021e3b54fcSMatthew Dillon }
1031e3b54fcSMatthew Dillon NumFiles = MaxFiles = 16;
1041e3b54fcSMatthew Dillon Elms = calloc(MaxFiles, sizeof(monitor_elm_t));
1051e3b54fcSMatthew Dillon
1061e3b54fcSMatthew Dillon for (i = 0; i < ac; ++i) {
1071e3b54fcSMatthew Dillon monitor_add(av[i]);
1081e3b54fcSMatthew Dillon }
1091e3b54fcSMatthew Dillon fflush(stdout);
1101e3b54fcSMatthew Dillon do {
1111e3b54fcSMatthew Dillon monitor_events();
1121e3b54fcSMatthew Dillon fflush(stdout);
1131e3b54fcSMatthew Dillon } while (ExitOpt == 0);
1141e3b54fcSMatthew Dillon exit(0);
1151e3b54fcSMatthew Dillon }
1161e3b54fcSMatthew Dillon
1171e3b54fcSMatthew Dillon static
1181e3b54fcSMatthew Dillon void
monitor_add(const char * path)1191e3b54fcSMatthew Dillon monitor_add(const char *path)
1201e3b54fcSMatthew Dillon {
1211e3b54fcSMatthew Dillon monitor_elm_t elm;
1221e3b54fcSMatthew Dillon struct kevent kev;
123*09af4d5fSSascha Wildner int n;
1241e3b54fcSMatthew Dillon
1251e3b54fcSMatthew Dillon elm = malloc(sizeof(*elm));
1261e3b54fcSMatthew Dillon bzero(elm, sizeof(*elm));
1271e3b54fcSMatthew Dillon elm->path = path;
1281e3b54fcSMatthew Dillon elm->fd = open(path, O_RDONLY);
1291e3b54fcSMatthew Dillon if (elm->fd < 0) {
1301e3b54fcSMatthew Dillon printf("%s\tnot found\n", path);
1311e3b54fcSMatthew Dillon return;
1321e3b54fcSMatthew Dillon }
1331e3b54fcSMatthew Dillon EV_SET(&kev, elm->fd, EVFILT_VNODE, EV_ADD|EV_ENABLE|EV_CLEAR,
1341e3b54fcSMatthew Dillon NOTE_DELETE|NOTE_WRITE|NOTE_EXTEND|NOTE_ATTRIB|
1351e3b54fcSMatthew Dillon NOTE_LINK|NOTE_RENAME|NOTE_REVOKE,
1361e3b54fcSMatthew Dillon 0, NULL);
1371e3b54fcSMatthew Dillon n = kevent(KQueueFd, &kev, 1, NULL, 0, NULL);
138*09af4d5fSSascha Wildner if (n < 0) {
139*09af4d5fSSascha Wildner perror("kqueue");
140*09af4d5fSSascha Wildner exit(1);
141*09af4d5fSSascha Wildner }
1421e3b54fcSMatthew Dillon
1431e3b54fcSMatthew Dillon if (elm->fd >= NumFiles) {
1441e3b54fcSMatthew Dillon MaxFiles = (elm->fd + 16) * 3 / 2;
1451e3b54fcSMatthew Dillon Elms = realloc(Elms, MaxFiles * sizeof(elm));
146a8872c94SAntonio Huete Jimenez bzero(&Elms[NumFiles], (MaxFiles - NumFiles) * sizeof(elm));
1471e3b54fcSMatthew Dillon NumFiles = MaxFiles;
1481e3b54fcSMatthew Dillon }
1491e3b54fcSMatthew Dillon Elms[elm->fd] = elm;
1501e3b54fcSMatthew Dillon }
1511e3b54fcSMatthew Dillon
1521e3b54fcSMatthew Dillon static
1531e3b54fcSMatthew Dillon void
monitor_events(void)1541e3b54fcSMatthew Dillon monitor_events(void)
1551e3b54fcSMatthew Dillon {
1561e3b54fcSMatthew Dillon struct kevent kev_array[1];
1571e3b54fcSMatthew Dillon struct kevent *kev;
1581e3b54fcSMatthew Dillon monitor_elm_t elm;
1591e3b54fcSMatthew Dillon struct stat st;
1601e3b54fcSMatthew Dillon int bno;
1611e3b54fcSMatthew Dillon int i;
1621e3b54fcSMatthew Dillon int n;
1631e3b54fcSMatthew Dillon
1641e3b54fcSMatthew Dillon n = kevent(KQueueFd, NULL, 0, kev_array, 1, NULL);
1651e3b54fcSMatthew Dillon for (i = 0; i < n; ++i) {
1661e3b54fcSMatthew Dillon kev = &kev_array[i];
1671e3b54fcSMatthew Dillon elm = Elms[kev->ident];
1681e3b54fcSMatthew Dillon printf("%-23s", elm->path);
1691e3b54fcSMatthew Dillon if (VerboseOpt && fstat(kev->ident, &st) == 0 &&
1701e3b54fcSMatthew Dillon S_ISREG(st.st_mode)) {
171a276dc6bSMatthew Dillon printf(" %10jd", (intmax_t)st.st_size);
1721e3b54fcSMatthew Dillon }
1731e3b54fcSMatthew Dillon while (QuietOpt == 0 && (bno = ffs(kev->fflags)) > 0) {
1741e3b54fcSMatthew Dillon printf(" ");
1751e3b54fcSMatthew Dillon --bno;
1761e3b54fcSMatthew Dillon kev->fflags &= ~(1 << bno);
1771e3b54fcSMatthew Dillon switch (1 << bno) {
1781e3b54fcSMatthew Dillon case NOTE_DELETE:
1791e3b54fcSMatthew Dillon printf("delete");
1801e3b54fcSMatthew Dillon break;
1811e3b54fcSMatthew Dillon case NOTE_WRITE:
1821e3b54fcSMatthew Dillon printf("write");
1831e3b54fcSMatthew Dillon break;
1841e3b54fcSMatthew Dillon case NOTE_EXTEND:
1851e3b54fcSMatthew Dillon printf("extend");
1861e3b54fcSMatthew Dillon break;
1871e3b54fcSMatthew Dillon case NOTE_ATTRIB:
1881e3b54fcSMatthew Dillon printf("attrib");
1891e3b54fcSMatthew Dillon break;
1901e3b54fcSMatthew Dillon case NOTE_LINK:
1911e3b54fcSMatthew Dillon printf("link");
1921e3b54fcSMatthew Dillon break;
1931e3b54fcSMatthew Dillon case NOTE_RENAME:
1941e3b54fcSMatthew Dillon printf("rename");
1951e3b54fcSMatthew Dillon break;
1961e3b54fcSMatthew Dillon case NOTE_REVOKE:
1971e3b54fcSMatthew Dillon printf("revoke");
1981e3b54fcSMatthew Dillon break;
1991e3b54fcSMatthew Dillon default:
2001e3b54fcSMatthew Dillon printf("%08x", 1 << bno);
2011e3b54fcSMatthew Dillon break;
2021e3b54fcSMatthew Dillon }
2031e3b54fcSMatthew Dillon }
2041e3b54fcSMatthew Dillon printf("\n");
2051e3b54fcSMatthew Dillon }
2061e3b54fcSMatthew Dillon }
2071e3b54fcSMatthew Dillon
2081e3b54fcSMatthew Dillon static
2091e3b54fcSMatthew Dillon void
usage(int exit_code)2101e3b54fcSMatthew Dillon usage(int exit_code)
2111e3b54fcSMatthew Dillon {
2121e3b54fcSMatthew Dillon fprintf(stderr,
2131e3b54fcSMatthew Dillon "monitor [-vx] files...\n"
2141e3b54fcSMatthew Dillon " -v Be more verbose\n"
2151e3b54fcSMatthew Dillon " -x Exit after first event reported\n"
2161e3b54fcSMatthew Dillon );
2171e3b54fcSMatthew Dillon exit(exit_code);
2181e3b54fcSMatthew Dillon }
2191e3b54fcSMatthew Dillon
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