+++ /dev/null
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
- *
- * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
- * CA 95054 USA or visit www.sun.com if you need additional information or
- * have any questions.
- *
- * GPL HEADER END
- */
-/*
- * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
- * Use is subject to license terms.
- */
-/*
- * This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
- *
- * lustre/utils/lshowmount.h
- *
- * Author: Herb Wartens <wartens2@llnl.gov>
- * Author: Jim Garlick <garlick@llnl.gov>
- */
-
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE
-#endif
-
-#include <stdlib.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <getopt.h>
-#include <dirent.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <errno.h>
-#include <libgen.h>
-
-#include "nidlist.h"
-
-#define PROC_DIRS { \
- "/proc/fs/lustre/mgs", \
- "/proc/fs/lustre/mdt", \
- "/proc/fs/lustre/obdfilter", \
- NULL, \
-}
-#define PROC_EXPORTS_TMPL "%s/%s/exports"
-#define PROC_UUID_TMPL "%s/%s/uuid"
-
-static void print_nids(NIDList nidlist, int lookup, int enumerate, int indent);
-static int lshowmount(int lookup, int enumerate, int verbose);
-static void read_exports(char *exports, NIDList nidlist);
-
-char *prog;
-
-#define OPTIONS "ehlv"
-static struct option long_options[] = {
- {"enumerate", no_argument, 0, 'e'},
- {"help", no_argument, 0, 'h'},
- {"lookup", no_argument, 0, 'l'},
- {"verbose", no_argument, 0, 'v'},
- {0, 0, 0, 0},
-};
-
-static void usage(void)
-{
- fprintf(stderr, "usage: %s [-e] [-h] [-l] [-v]\n", prog);
- exit(1);
-}
-
-int main(int argc, char **argv)
-{
- int opt, optidx = 0;
- int lopt = 0;
- int vopt = 0;
- int eopt = 0;
-
- prog = basename(argv[0]);
-
- while ((opt = getopt_long(argc, argv, OPTIONS, long_options, &optidx)) != -1) {
- switch (opt) {
- case 'e': /* --enumerate */
- eopt = 1;
- break;
- case 'l': /* --lookup */
- lopt = 1;
- break;
- case 'v': /* --verbose */
- vopt = 1;
- break;
- case 'h': /* --help */
- default:
- usage();
- }
- }
-
- if (lshowmount(lopt, eopt, vopt) == 0) {
- fprintf(stderr, "%s: lustre server modules not loaded\n", prog);
- exit(1);
- }
- exit(0);
-}
-
-static void print_nids(NIDList nidlist, int lookup, int enumerate, int indent)
-{
- char *s, *sep = "\n", *pfx = "";
-
- if (lookup)
- nl_lookup_ip(nidlist);
- nl_sort(nidlist);
- nl_uniq(nidlist);
- if (nl_count(nidlist) > 0) {
- if (indent) {
- sep = "\n ";
- pfx = " ";
- }
- if (enumerate)
- s = nl_string(nidlist, sep);
- else
- s = nl_xstring(nidlist, sep);
- printf("%s%s\n", pfx, s);
- free(s);
- }
-}
-
-static int lshowmount(int lookup, int enumerate, int verbose)
-{
- char *dirs[] = PROC_DIRS;
- char exp[PATH_MAX + 1];
- NIDList nidlist = NULL;
- DIR *topdirp;
- struct dirent *dp;
- int i;
- int opens = 0;
-
- if (!verbose)
- nidlist = nl_create();
- for (i = 0; dirs[i] != NULL; i++) {
- if ((topdirp = opendir(dirs[i])) == NULL)
- continue;
- while ((dp = readdir(topdirp))) {
- if (dp->d_type != DT_DIR)
- continue;
- if (!strcmp(dp->d_name, "."))
- continue;
- if (!strcmp(dp->d_name, ".."))
- continue;
- sprintf(exp, PROC_EXPORTS_TMPL, dirs[i], dp->d_name);
- if (verbose) {
- nidlist = nl_create();
- read_exports(exp, nidlist);
- printf("%s:\n", dp->d_name);
- print_nids(nidlist, lookup, enumerate, 1);
- nl_destroy(nidlist);
- } else
- read_exports(exp, nidlist);
- }
- closedir(topdirp);
- opens++;
- }
- if (!verbose) {
- print_nids(nidlist, lookup, enumerate, 0);
- nl_destroy(nidlist);
- }
- return opens;
-}
-
-static int empty_proc_file(char *path)
-{
- int empty = 0;
- char buf[36];
- int fd;
-
- if ((fd = open(path, O_RDONLY)) < 0 || read(fd, buf, sizeof(buf)) <= 0)
- empty = 1;
- if (fd >= 0)
- close(fd);
- return empty;
-}
-
-static void read_exports(char *exports, NIDList nidlist)
-{
- DIR *dirp;
- struct dirent *dp;
- char path[PATH_MAX + 1];
-
- if ((dirp = opendir(exports))) {
- while ((dp = readdir(dirp))) {
- if (dp->d_type != DT_DIR)
- continue;
- if (!strcmp(dp->d_name, "."))
- continue;
- if (!strcmp(dp->d_name, ".."))
- continue;
- if (strchr(dp->d_name, '@') == NULL)
- continue;
- sprintf(path, PROC_UUID_TMPL, exports, dp->d_name);
- if (empty_proc_file(path))
- continue;
-
- nl_add(nidlist, dp->d_name);
- }
- closedir(dirp);
- }
-}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff