Added alternate ways to specify directories to be monitored.
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hjp
parent
bcd6a7e8bd
commit
321ed609ff
156
ddm/ddm.c
156
ddm/ddm.c
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@ -1,5 +1,5 @@
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char ddm_c_rcs_id[] =
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"$Id: ddm.c,v 1.4 2000-06-04 16:33:21 hjp Exp $";
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"$Id: ddm.c,v 1.5 2000-09-07 10:12:35 hjp Exp $";
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/*
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* ddm - disk delay monitor
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*
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@ -7,8 +7,10 @@ char ddm_c_rcs_id[] =
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* the equivalent of an ls -l.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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@ -19,6 +21,10 @@ char ddm_c_rcs_id[] =
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#include <unistd.h>
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#include <ant/da.h>
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#include <ant/io.h>
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#include <ant/globals.h>
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typedef enum { MODE_NONE, MODE_ARGS, MODE_MNTTAB, MODE_DIRFILE } modeT;
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static double gettimestamp(void) {
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struct timeval tm;
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@ -27,68 +33,141 @@ static double gettimestamp(void) {
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return tm.tv_sec + tm.tv_usec/1E6;
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}
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static void usage(void) {
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fprintf(stderr, "Usage: %s [-d dirfile | -m mnttab | directory ... ]\n",
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cmnd);
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exit(1);
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}
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void printtimestamp (const char *fmt, ...) {
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static double lts = 0;
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double ts = gettimestamp();
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va_list ap;
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fprintf(stderr, "%s: %.6f: %.6f: ", cmnd, ts, ts - lts);
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va_start(ap, fmt);
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vfprintf(stderr, fmt, ap);
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va_end(ap);
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lts = ts;
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}
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int main(int argc, char**argv) {
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char **dirs = NULL;
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char **entries = NULL;
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modeT mode = MODE_NONE;
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int nr_dirs;
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int c;
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char *filename = NULL;
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cmnd = argv[0];
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while ((c = getopt(argc, argv, "d:m:")) != EOF) {
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switch (c) {
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case 'd':
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mode = MODE_DIRFILE;
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filename = optarg;
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break;
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case 'm':
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mode = MODE_MNTTAB;
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filename = optarg;
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break;
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case '?':
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usage();
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default:
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assert(0);
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}
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}
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if (mode == MODE_NONE) {
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if (optind == argc) {
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mode = MODE_MNTTAB;
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filename = MNTTAB;
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} else {
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mode = MODE_ARGS;
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dirs = argv + optind;
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nr_dirs = argc - optind;
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}
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} else {
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if (optind != argc) usage();
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}
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for (;;) {
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FILE *mtp;
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struct mntent *me;
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double ts;
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int i;
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int nr_dirs;
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int sleeptime;
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/* Get list of directories
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*/
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ts = gettimestamp();
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fprintf(stderr, "%s: %.6f: open %s\n", argv[0], ts, MNTTAB);
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if ((mtp = setmntent(MNTTAB, "r")) == NULL) {
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fprintf(stderr, "%s: cannot open %s: %s\n",
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argv[0], MNTTAB, strerror(errno));
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exit(1);
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}
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for (i = 0;(me = getmntent(mtp)); i++) {
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DA_MKIND_INI(dirs, i, NULL);
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if (dirs[i]) free(dirs[i]);
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dirs[i] = strdup(me->mnt_dir);
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ts = gettimestamp();
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fprintf(stderr, "%s: %.6f: mountpoint %s\n",
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argv[0], ts, dirs[i]);
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}
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endmntent(mtp);
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switch (mode) {
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case MODE_MNTTAB: {
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FILE *mtp;
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struct mntent *me;
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printtimestamp("open %s\n", filename);
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if ((mtp = setmntent(filename, "r")) == NULL) {
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fprintf(stderr, "%s: cannot open %s: %s\n",
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argv[0], filename, strerror(errno));
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exit(1);
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}
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for (i = 0;(me = getmntent(mtp)); i++) {
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DA_MKIND_INI(dirs, i, NULL);
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if (dirs[i]) free(dirs[i]);
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dirs[i] = strdup(me->mnt_dir);
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printtimestamp("mountpoint %s\n", dirs[i]);
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}
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endmntent(mtp);
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nr_dirs = i;
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break;
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}
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case MODE_DIRFILE: {
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FILE *fp;
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char *p;
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printtimestamp("open %s\n", filename);
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fp = efopen(filename, "r");
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for (i = 0;(p = getline(fp)); i++) {
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DA_MKIND_INI(dirs, i, NULL);
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if (dirs[i]) free(dirs[i]);
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dirs[i] = strdup(p);
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printtimestamp("directory %s\n", dirs[i]);
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}
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efclose(fp);
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nr_dirs = i;
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break;
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}
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case MODE_ARGS:
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break;
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default:
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assert(0);
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}
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nr_dirs = i;
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/* Now read them
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*/
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for (i = 0; i < nr_dirs; i++) {
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int j;
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char **entries = NULL;
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int nr_entries;
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DIR *dp;
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struct dirent *de;
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fprintf(stderr, "%s: %.6f: start %s\n",
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argv[0], gettimestamp(), dirs[i]);
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printtimestamp("start %s\n", dirs[i]);
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if (chdir(dirs[i]) == -1) {
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fprintf(stderr, "%s: %.6f: chdir %s failed: %s\n",
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argv[0], gettimestamp(), dirs[i], strerror(errno));
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printtimestamp("chdir %s failed: %s\n", dirs[i], strerror(errno));
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continue;
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}
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fprintf(stderr, "%s: %.6f: chdir %s ok\n",
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argv[0], gettimestamp(), dirs[i]);
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printtimestamp("chdir %s ok\n", dirs[i]);
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if ((dp = opendir(".")) == NULL) {
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fprintf(stderr, "%s: %.6f: opendir %s failed: %s\n",
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argv[0], gettimestamp(), dirs[i], strerror(errno));
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printtimestamp("opendir %s failed: %s\n", dirs[i], strerror(errno));
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continue;
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}
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for (j = 0;(de = readdir(dp)); j++) {
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DA_MKIND_INI(entries, j, NULL);
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if (entries[j]) free(entries[j]);
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entries[j] = strdup(de->d_name);
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fprintf(stderr, "%s: %.6f: entry %s\n",
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argv[0], gettimestamp(), entries[j]);
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printtimestamp("entry %s\n", entries[j]);
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}
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closedir(dp);
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nr_entries = j;
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@ -96,16 +175,14 @@ int main(int argc, char**argv) {
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for (j = 0; j < nr_entries; j++) {
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struct stat st;
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stat (entries[j], &st);
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fprintf(stderr, "%s: %.6f: stat entry %s\n",
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argv[0], gettimestamp(), entries[j]);
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printtimestamp("stat entry %s\n", entries[j]);
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}
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}
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chdir("/");
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sleeptime = rand() * 3600.0 / RAND_MAX;
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fprintf(stderr, "%s: %.6f: sleeping %d seconds\n",
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argv[0], gettimestamp(), sleeptime);
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printtimestamp("sleeping %d seconds\n", sleeptime);
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sleep(sleeptime);
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}
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@ -115,7 +192,10 @@ int main(int argc, char**argv) {
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/*
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* $Log: ddm.c,v $
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* Revision 1.4 2000-06-04 16:33:21 hjp
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* Revision 1.5 2000-09-07 10:12:35 hjp
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* Added alternate ways to specify directories to be monitored.
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*
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* Revision 1.4 2000/06/04 16:33:21 hjp
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* Removed MNTTAB autodetection again as it seems to be already defined.
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* Don't skip rest of mountpoints if one is not accessible.
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* chdir to / while sleeping to avoid blocking automounters
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