4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
29 * Copyright (c) 2012 Whamcloud, Inc.
32 * This file is part of Lustre, http://www.lustre.org/
33 * Lustre is a trademark of Sun Microsystems, Inc.
38 #endif /* HAVE_CONFIG_H */
44 #include <lustre_disk.h>
45 #include <lustre_ver.h>
47 #include <sys/utsname.h>
48 #include "mount_utils.h"
50 extern char *progname;
53 #define vprint(fmt, arg...) if (verbose > 0) printf(fmt, ##arg)
54 #define verrprint(fmt, arg...) if (verbose >= 0) fprintf(stderr, fmt, ##arg)
59 fprintf(stderr, "\n%s FATAL: ", progname);
62 int run_command(char *cmd, int cmdsz)
64 char log[] = "/tmp/run_command_logXXXXXX";
67 if ((cmdsz - strlen(cmd)) < 6) {
69 fprintf(stderr, "Command buffer overflow: %.*s...\n",
75 printf("cmd: %s\n", cmd);
77 if ((fd = mkstemp(log)) >= 0) {
85 /* Can't use popen because we need the rv of the command */
87 if (rc && (fd >= 0)) {
92 while (fgets(buf, sizeof(buf), fp) != NULL) {
103 int add_param(char *buf, char *key, char *val)
105 int end = sizeof(((struct lustre_disk_data *)0)->ldd_params);
106 int start = strlen(buf);
110 keylen = strlen(key);
111 if (start + 1 + keylen + strlen(val) >= end) {
112 fprintf(stderr, "%s: params are too long-\n%s %s%s\n",
113 progname, buf, key ? key : "", val);
117 sprintf(buf + start, " %s%s", key ? key : "", val);
121 int get_param(char *buf, char *key, char **val)
123 int i, key_len = strlen(key);
126 ptr = strstr(buf, key);
128 *val = strdup(ptr + key_len);
132 for (i = 0; i < strlen(*val); i++)
133 if (((*val)[i] == ' ') || ((*val)[i] == '\0'))
143 char *strscat(char *dst, char *src, int buflen)
146 if (strlen(dst) + strlen(src) >= buflen) {
147 fprintf(stderr, "string buffer overflow (max %d): '%s' + '%s'"
148 "\n", buflen, dst, src);
151 return strcat(dst, src);
154 char *strscpy(char *dst, char *src, int buflen)
157 return strscat(dst, src, buflen);
160 static int in_mntlist(char *opt, char *mntlist)
162 char *ml, *mlp, *item, *ctx = NULL;
164 if (!(ml = strdup(mntlist))) {
165 fprintf(stderr, "%s: out of memory\n", progname);
169 while ((item = strtok_r(mlp, ",", &ctx))) {
170 if (!strcmp(opt, item))
175 return (item != NULL);
178 /* Issue a message on stderr for every item in wanted_mountopts that is not
179 * present in mountopts. The justwarn boolean toggles between error and
180 * warning message. Return an error count.
182 int check_mountfsoptions(char *mountopts, char *wanted_mountopts,
185 char *ml, *mlp, *item, *ctx = NULL;
188 if (!(ml = strdup(wanted_mountopts))) {
189 fprintf(stderr, "%s: out of memory\n", progname);
193 while ((item = strtok_r(mlp, ",", &ctx))) {
194 if (!in_mntlist(item, mountopts)) {
195 fprintf(stderr, "%s: %s mount option `%s' is missing\n",
196 progname, justwarn ? "Warning: default"
197 : "Error: mandatory", item);
206 /* Trim embedded white space, leading and trailing commas from string s.
208 void trim_mountfsoptions(char *s)
214 memmove(p, p + 1, strlen(p + 1) + 1);
221 memmove(&s[0], &s[1], strlen(&s[1]) + 1);
223 p = s + strlen(s) - 1;
224 while (p >= s && *p == ',')
228 /* Setup a file in the first unused loop_device */
229 int loop_setup(struct mkfs_opts *mop)
235 /* Figure out the loop device names */
236 if (!access("/dev/loop0", F_OK | R_OK)) {
237 strcpy(loop_base, "/dev/loop\0");
238 } else if (!access("/dev/loop/0", F_OK | R_OK)) {
239 strcpy(loop_base, "/dev/loop/\0");
241 fprintf(stderr, "%s: can't access loop devices\n", progname);
245 /* Find unused loop device */
246 for (i = 0; i < MAX_LOOP_DEVICES; i++) {
248 int cmdsz = sizeof(cmd);
250 sprintf(l_device, "%s%d", loop_base, i);
251 if (access(l_device, F_OK | R_OK))
253 snprintf(cmd, cmdsz, "losetup %s > /dev/null 2>&1", l_device);
256 /* losetup gets 1 (ret=256) for non-set-up device */
258 /* Set up a loopback device to our file */
259 snprintf(cmd, cmdsz, "losetup %s %s", l_device,
261 ret = run_command(cmd, cmdsz);
263 /* someone else picked up this loop device
267 fprintf(stderr, "%s: error %d on losetup: %s\n",
268 progname, ret, strerror(ret));
271 strscpy(mop->mo_loopdev, l_device,
272 sizeof(mop->mo_loopdev));
277 fprintf(stderr, "%s: out of loop devices!\n", progname);
281 int loop_cleanup(struct mkfs_opts *mop)
285 if ((mop->mo_flags & MO_IS_LOOP) && *mop->mo_loopdev) {
286 sprintf(cmd, "losetup -d %s", mop->mo_loopdev);
287 ret = run_command(cmd, sizeof(cmd));
292 int loop_format(struct mkfs_opts *mop)
296 if (mop->mo_device_sz == 0) {
298 fprintf(stderr, "loop device requires a --device-size= "
303 fd = creat(mop->mo_device, S_IRUSR|S_IWUSR);
306 fprintf(stderr, "%s: Unable to create backing store: %s\n",
307 progname, strerror(errno));
311 if (ftruncate(fd, mop->mo_device_sz * 1024) != 0) {
314 fprintf(stderr, "%s: Unable to truncate backing store: %s\n",
315 progname, strerror(errno));
323 __u64 get_device_size(char* device)
328 fd = open(device, O_RDONLY);
330 fprintf(stderr, "%s: cannot open %s: %s\n",
331 progname, device, strerror(errno));
336 /* size in bytes. bz5831 */
337 ret = ioctl(fd, BLKGETSIZE64, (void*)&size);
342 ret = ioctl(fd, BLKGETSIZE, (void*)&lsize);
343 size = (__u64)lsize * 512;
348 fprintf(stderr, "%s: size ioctl failed: %s\n",
349 progname, strerror(errno));
353 vprint("device size = "LPU64"MB\n", size >> 20);
354 /* return value in KB */
358 int file_create(char *path, int size)
363 ret = access(path, F_OK);
370 fd = creat(path, S_IRUSR|S_IWUSR);
373 fprintf(stderr, "%s: Unable to create backing store: %s\n",
374 progname, strerror(errno));
378 ret = ftruncate(fd, size * 1024);
382 fprintf(stderr, "%s: Unable to truncate backing store: %s\n",
383 progname, strerror(errno));