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) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/utils/liblustreapi.c
38 * Author: Peter J. Braam <braam@clusterfs.com>
39 * Author: Phil Schwan <phil@clusterfs.com>
40 * Author: Robert Read <rread@clusterfs.com>
52 #include <sys/ioctl.h>
59 #include <sys/types.h>
60 #include <sys/syscall.h>
61 #include <sys/xattr.h>
64 #ifdef HAVE_LINUX_UNISTD_H
65 #include <linux/unistd.h>
71 #include <liblustre.h>
72 #include <lnet/lnetctl.h>
74 #include <lustre_lib.h>
76 #include <lustre/liblustreapi.h>
78 static unsigned llapi_dir_filetype_table[] = {
87 #if defined(DT_DOOR) && defined(S_IFDOOR)
92 #if defined(DT_DOOR) && defined(S_IFDOOR)
93 static const int DT_MAX = DT_DOOR;
95 static const int DT_MAX = DT_SOCK;
98 static unsigned llapi_filetype_dir_table[] = {
107 #if defined(DT_DOOR) && defined(S_IFDOOR)
112 #if defined(DT_DOOR) && defined(S_IFDOOR)
113 static const int S_IFMAX = DT_DOOR;
115 static const int S_IFMAX = DT_SOCK;
118 /* liblustreapi message level */
119 static int llapi_msg_level = LLAPI_MSG_MAX;
121 void llapi_msg_set_level(int level)
123 /* ensure level is in the good range */
124 if (level < LLAPI_MSG_OFF)
125 llapi_msg_level = LLAPI_MSG_OFF;
126 else if (level > LLAPI_MSG_MAX)
127 llapi_msg_level = LLAPI_MSG_MAX;
129 llapi_msg_level = level;
132 /* llapi_error will preserve errno */
133 void llapi_error(int level, int _rc, char *fmt, ...)
136 int tmp_errno = errno;
137 /* to protect using errno as _rc argument */
140 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
144 vfprintf(stderr, fmt, args);
147 if (level & LLAPI_MSG_NO_ERRNO)
148 fprintf(stderr, "\n");
150 fprintf(stderr, ": %s (%d)\n", strerror(rc), rc);
154 /* llapi_printf will preserve errno */
155 void llapi_printf(int level, char *fmt, ...)
158 int tmp_errno = errno;
160 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
164 vfprintf(stdout, fmt, args);
170 * size_units is to be initialized (or zeroed) by caller.
172 int parse_size(char *optarg, unsigned long long *size,
173 unsigned long long *size_units, int bytes_spec)
177 if (strncmp(optarg, "-", 1) == 0)
180 if (*size_units == 0)
183 *size = strtoull(optarg, &end, 0);
186 if ((*end == 'b') && *(end + 1) == '\0' &&
187 (*size & (~0ULL << (64 - 9))) == 0 &&
189 *size_units = 1 << 9;
190 } else if ((*end == 'b') &&
191 *(end + 1) == '\0' &&
194 } else if ((*end == 'k' || *end == 'K') &&
195 *(end + 1) == '\0' &&
196 (*size & (~0ULL << (64 - 10))) == 0) {
197 *size_units = 1 << 10;
198 } else if ((*end == 'm' || *end == 'M') &&
199 *(end + 1) == '\0' &&
200 (*size & (~0ULL << (64 - 20))) == 0) {
201 *size_units = 1 << 20;
202 } else if ((*end == 'g' || *end == 'G') &&
203 *(end + 1) == '\0' &&
204 (*size & (~0ULL << (64 - 30))) == 0) {
205 *size_units = 1 << 30;
206 } else if ((*end == 't' || *end == 'T') &&
207 *(end + 1) == '\0' &&
208 (*size & (~0ULL << (64 - 40))) == 0) {
209 *size_units = 1ULL << 40;
210 } else if ((*end == 'p' || *end == 'P') &&
211 *(end + 1) == '\0' &&
212 (*size & (~0ULL << (64 - 50))) == 0) {
213 *size_units = 1ULL << 50;
214 } else if ((*end == 'e' || *end == 'E') &&
215 *(end + 1) == '\0' &&
216 (*size & (~0ULL << (64 - 60))) == 0) {
217 *size_units = 1ULL << 60;
222 *size *= *size_units;
226 /* XXX: llapi_xxx() functions return negative values upon failure */
228 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
229 int stripe_count, int stripe_pattern)
233 /* 64 KB is the largest common page size I'm aware of (on ia64), but
234 * check the local page size just in case. */
235 page_size = LOV_MIN_STRIPE_SIZE;
236 if (getpagesize() > page_size) {
237 page_size = getpagesize();
238 llapi_err_noerrno(LLAPI_MSG_WARN,
239 "warning: your page size (%u) is "
240 "larger than expected (%u)", page_size,
241 LOV_MIN_STRIPE_SIZE);
243 if (stripe_size < 0 || (stripe_size & (LOV_MIN_STRIPE_SIZE - 1))) {
245 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %lu, "
246 "must be an even multiple of %d bytes",
247 stripe_size, page_size);
250 if (stripe_offset < -1 || stripe_offset > MAX_OBD_DEVICES) {
252 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
256 if (stripe_count < -1 || stripe_count > LOV_MAX_STRIPE_COUNT) {
258 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
262 if (stripe_size >= (1ULL << 32)) {
264 llapi_error(LLAPI_MSG_ERROR, rc,
265 "warning: stripe size 4G or larger "
266 "is not currently supported and would wrap");
272 /* return the first file matching this pattern */
273 static int first_match(char *pattern, char *buffer)
277 if (glob(pattern, GLOB_BRACE, NULL, &glob_info))
280 if (glob_info.gl_pathc < 1) {
281 globfree(&glob_info);
285 strcpy(buffer, glob_info.gl_pathv[0]);
287 globfree(&glob_info);
291 static int find_target_obdpath(char *fsname, char *path)
294 char pattern[PATH_MAX + 1];
297 snprintf(pattern, PATH_MAX,
298 "/proc/fs/lustre/lov/%s-*/target_obd",
300 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
301 if (rc == GLOB_NOMATCH)
306 strcpy(path, glob_info.gl_pathv[0]);
307 globfree(&glob_info);
311 static int find_poolpath(char *fsname, char *poolname, char *poolpath)
314 char pattern[PATH_MAX + 1];
317 snprintf(pattern, PATH_MAX,
318 "/proc/fs/lustre/lov/%s-*/pools/%s",
320 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
321 /* If no pools, make sure the lov is available */
322 if ((rc == GLOB_NOMATCH) &&
323 (find_target_obdpath(fsname, poolpath) == -ENODEV))
328 strcpy(poolpath, glob_info.gl_pathv[0]);
329 globfree(&glob_info);
334 * return a parameter string for a specific device type or mountpoint
336 * \param param_path the path to the file containing parameter data
337 * \param result buffer for parameter value string
338 * \param result_size size of buffer for return value
340 * The \param param_path is appended to /proc/{fs,sys}/{lnet,lustre} to
341 * complete the absolute path to the file containing the parameter data
342 * the user is requesting. If that file exist then the data is read from
343 * the file and placed into the \param result buffer that is passed by
344 * the user. Data is only copied up to the \param result_size to prevent
345 * overflow of the array.
347 * Return 0 for success, with a NUL-terminated string in \param result.
348 * Return -ve value for error.
350 static int get_param(const char *param_path, char *result,
351 unsigned int result_size)
353 char file[PATH_MAX + 1], pattern[PATH_MAX + 1], buf[result_size];
357 snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
359 rc = first_match(pattern, file);
363 fp = fopen(file, "r");
365 while (fgets(buf, result_size, fp) != NULL)
374 #define DEVICES_LIST "/proc/fs/lustre/devices"
377 * return a parameter string for a specific device type or mountpoint
379 * \param fsname Lustre filesystem name (optional)
380 * \param file_path path to file in filesystem (optional, if fsname unset)
381 * \param obd_type Lustre OBD device type
382 * \param param_name parameter name to fetch
383 * \param value return buffer for parameter value string
384 * \param val_len size of buffer for return value
386 * If fsname is specified then the parameter will be from that filesystem
387 * (if it exists). If file_path is given and it is in a mounted Lustre
388 * filesystem, then the parameter will be otherwise the value may be
389 * from any mounted filesystem (if there is more than one).
391 * If "obd_type" matches a Lustre device then the first matching device
392 * (as with "lctl dl", constrained by \param fsname or \param mount_path)
393 * will be used to provide the return value, otherwise the first such
394 * device found will be used.
396 * Return 0 for success, with a NUL-terminated string in \param buffer.
397 * Return -ve value for error.
399 static int get_param_obdvar(const char *fsname, const char *file_path,
400 const char *obd_type, const char *param_name,
401 char *value, unsigned int val_len)
403 char devices[PATH_MAX + 1], dev[PATH_MAX + 1] = "*", fs[PATH_MAX + 1];
404 FILE *fp = fopen(DEVICES_LIST, "r");
407 if (!fsname && file_path) {
408 rc = llapi_search_fsname(file_path, fs);
410 llapi_error(LLAPI_MSG_ERROR, rc,
411 "'%s' is not on a Lustre filesystem",
423 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
427 while (fgets(devices, sizeof(devices), fp) != NULL) {
428 char *bufp = devices, *tmp;
430 while (bufp[0] == ' ')
433 tmp = strstr(bufp, obd_type);
435 tmp += strlen(obd_type) + 1;
439 tmp = strchr(dev, ' ');
445 if (dev[0] == '*' && strlen(fs))
446 snprintf(dev, PATH_MAX, "%s-*", fs);
447 snprintf(devices, PATH_MAX, "%s/%s/%s", obd_type, dev, param_name);
449 return get_param(devices, value, val_len);
452 static int get_mds_md_size(char *path)
454 int lumlen = lov_mds_md_size(LOV_MAX_STRIPE_COUNT, LOV_MAGIC_V3);
457 /* Now get the maxea from llite proc */
458 if (!get_param_obdvar(NULL, path, "llite", "max_easize",
465 * if pool is NULL, search ostname in target_obd
466 * if pool is not NULL:
467 * if pool not found returns errno < 0
468 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
469 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
471 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
474 char buffer[PATH_MAX + 1];
478 len = strlen(ostname);
480 if (poolname == NULL)
481 rc = find_target_obdpath(fsname, buffer);
483 rc = find_poolpath(fsname, poolname, buffer);
487 fd = fopen(buffer, "r");
491 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
492 if (poolname == NULL) {
494 /* Search for an ostname in the list of OSTs
495 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
496 ptr = strchr(buffer, ' ');
498 (strncmp(ptr + 1, ostname, len) == 0)) {
503 /* Search for an ostname in a pool,
504 (or an existing non-empty pool if no ostname) */
505 if ((ostname == NULL) ||
506 (strncmp(buffer, ostname, len) == 0)) {
516 int llapi_file_open_pool(const char *name, int flags, int mode,
517 unsigned long long stripe_size, int stripe_offset,
518 int stripe_count, int stripe_pattern, char *pool_name)
520 struct lov_user_md_v3 lum = { 0 };
524 /* Make sure we have a good pool */
525 if (pool_name != NULL) {
526 char fsname[MAX_OBD_NAME + 1], *ptr;
528 rc = llapi_search_fsname(name, fsname);
530 llapi_error(LLAPI_MSG_ERROR, rc,
531 "'%s' is not on a Lustre filesystem",
536 /* in case user gives the full pool name <fsname>.<poolname>,
537 * strip the fsname */
538 ptr = strchr(pool_name, '.');
541 if (strcmp(pool_name, fsname) != 0) {
543 llapi_err_noerrno(LLAPI_MSG_ERROR,
544 "Pool '%s' is not on filesystem '%s'",
551 /* Make sure the pool exists and is non-empty */
552 rc = llapi_search_ost(fsname, pool_name, NULL);
554 llapi_err_noerrno(LLAPI_MSG_ERROR,
555 "pool '%s.%s' %s", fsname, pool_name,
556 rc == 0 ? "has no OSTs" : "does not exist");
561 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
562 if (fd < 0 && errno == EISDIR) {
563 fd = open(name, O_DIRECTORY | O_RDONLY);
569 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
573 rc = llapi_stripe_limit_check(stripe_size, stripe_offset, stripe_count,
578 /* Initialize IOCTL striping pattern structure */
579 lum.lmm_magic = LOV_USER_MAGIC_V3;
580 lum.lmm_pattern = stripe_pattern;
581 lum.lmm_stripe_size = stripe_size;
582 lum.lmm_stripe_count = stripe_count;
583 lum.lmm_stripe_offset = stripe_offset;
584 if (pool_name != NULL) {
585 strncpy(lum.lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
587 /* If no pool is specified at all, use V1 request */
588 lum.lmm_magic = LOV_USER_MAGIC_V1;
591 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum)) {
592 char *errmsg = "stripe already set";
594 if (errno != EEXIST && errno != EALREADY)
595 errmsg = strerror(errno);
597 llapi_err_noerrno(LLAPI_MSG_ERROR,
598 "error on ioctl "LPX64" for '%s' (%d): %s",
599 (__u64)LL_IOC_LOV_SETSTRIPE, name, fd,errmsg);
610 int llapi_file_open(const char *name, int flags, int mode,
611 unsigned long long stripe_size, int stripe_offset,
612 int stripe_count, int stripe_pattern)
614 return llapi_file_open_pool(name, flags, mode, stripe_size,
615 stripe_offset, stripe_count,
616 stripe_pattern, NULL);
619 int llapi_file_create(const char *name, unsigned long long stripe_size,
620 int stripe_offset, int stripe_count, int stripe_pattern)
624 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
625 stripe_offset, stripe_count, stripe_pattern,
634 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
635 int stripe_offset, int stripe_count,
636 int stripe_pattern, char *pool_name)
640 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
641 stripe_offset, stripe_count, stripe_pattern,
651 * Find the fsname, the full path, and/or an open fd.
652 * Either the fsname or path must not be NULL
654 #define WANT_PATH 0x1
655 #define WANT_FSNAME 0x2
657 #define WANT_INDEX 0x8
658 #define WANT_ERROR 0x10
659 static int get_root_path(int want, char *fsname, int *outfd, char *path,
663 char buf[PATH_MAX], mntdir[PATH_MAX];
666 int idx = 0, len = 0, mntlen, fd;
669 /* get the mount point */
670 fp = setmntent(MOUNTED, "r");
673 llapi_error(LLAPI_MSG_ERROR, rc,
674 "setmntent(%s) failed", MOUNTED);
678 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
681 if (!llapi_is_lustre_mnt(&mnt))
684 if ((want & WANT_INDEX) && (idx++ != index))
687 mntlen = strlen(mnt.mnt_dir);
688 ptr = strrchr(mnt.mnt_fsname, '/');
695 /* Check the fsname for a match, if given */
696 if (!(want & WANT_FSNAME) && fsname != NULL &&
697 (strlen(fsname) > 0) && (strcmp(ptr, fsname) != 0))
700 /* If the path isn't set return the first one we find */
701 if (path == NULL || strlen(path) == 0) {
702 strcpy(mntdir, mnt.mnt_dir);
703 if ((want & WANT_FSNAME) && fsname != NULL)
707 /* Otherwise find the longest matching path */
708 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
709 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
710 strcpy(mntdir, mnt.mnt_dir);
712 if ((want & WANT_FSNAME) && fsname != NULL)
721 if ((want & WANT_PATH) && path != NULL)
722 strcpy(path, mntdir);
723 if (want & WANT_FD) {
724 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
727 llapi_error(LLAPI_MSG_ERROR, rc,
728 "error opening '%s'", mntdir);
734 } else if (want & WANT_ERROR)
735 llapi_err_noerrno(LLAPI_MSG_ERROR,
736 "can't find fs root for '%s': %d",
737 (want & WANT_PATH) ? fsname : path, rc);
742 * search lustre mounts
744 * Calling this function will return to the user the mount point, mntdir, and
745 * the file system name, fsname, if the user passed a buffer to this routine.
747 * The user inputs are pathname and index. If the pathname is supplied then
748 * the value of the index will be ignored. The pathname will return data if
749 * the pathname is located on a lustre mount. Index is used to pick which
750 * mount point you want in the case of multiple mounted lustre file systems.
751 * See function lfs_osts in lfs.c for a example of the index use.
753 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
756 int want = WANT_PATH, idx = -1;
758 if (!pathname || pathname[0] == '\0') {
762 strcpy(mntdir, pathname);
766 return get_root_path(want, fsname, NULL, mntdir, idx);
769 /* Given a path, find the corresponding Lustre fsname */
770 int llapi_search_fsname(const char *pathname, char *fsname)
775 path = realpath(pathname, NULL);
777 char buf[PATH_MAX + 1], *ptr;
780 if (pathname[0] != '/') {
781 /* Need an absolute path, but realpath() only works for
782 * pathnames that actually exist. We go through the
783 * extra hurdle of dirname(getcwd() + pathname) in
784 * case the relative pathname contains ".." in it. */
785 if (getcwd(buf, sizeof(buf) - 1) == NULL)
789 strncat(buf, pathname, sizeof(buf) - strlen(buf));
790 path = realpath(buf, NULL);
792 ptr = strrchr(buf, '/');
796 path = realpath(buf, NULL);
799 llapi_error(LLAPI_MSG_ERROR, rc,
800 "pathname '%s' cannot expand",
806 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
811 int llapi_getname(const char *path, char *buf, size_t size)
813 struct obd_uuid uuid_buf;
814 char *uuid = uuid_buf.uuid;
817 memset(&uuid_buf, 0, sizeof(uuid_buf));
818 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
822 /* We want to turn lustre-clilov-ffff88002738bc00 into
823 * lustre-ffff88002738bc00. */
825 nr = snprintf(buf, size, "%.*s-%s",
826 (int) (strlen(uuid) - 24), uuid,
827 uuid + strlen(uuid) - 16);
837 * find the pool directory path under /proc
838 * (can be also used to test if a fsname is known)
840 static int poolpath(char *fsname, char *pathname, char *pool_pathname)
843 char pattern[PATH_MAX + 1];
844 char buffer[PATH_MAX];
846 if (fsname == NULL) {
847 rc = llapi_search_fsname(pathname, buffer);
851 strcpy(pathname, fsname);
854 snprintf(pattern, PATH_MAX, "/proc/fs/lustre/lov/%s-*/pools", fsname);
855 rc = first_match(pattern, buffer);
859 /* in fsname test mode, pool_pathname is NULL */
860 if (pool_pathname != NULL)
861 strcpy(pool_pathname, buffer);
867 * Get the list of pool members.
868 * \param poolname string of format \<fsname\>.\<poolname\>
869 * \param members caller-allocated array of char*
870 * \param list_size size of the members array
871 * \param buffer caller-allocated buffer for storing OST names
872 * \param buffer_size size of the buffer
874 * \return number of members retrieved for this pool
875 * \retval -error failure
877 int llapi_get_poolmembers(const char *poolname, char **members,
878 int list_size, char *buffer, int buffer_size)
880 char fsname[PATH_MAX + 1];
882 char pathname[PATH_MAX + 1];
883 char path[PATH_MAX + 1];
890 /* name is FSNAME.POOLNAME */
891 if (strlen(poolname) > PATH_MAX)
893 strcpy(fsname, poolname);
894 pool = strchr(fsname, '.');
901 rc = poolpath(fsname, NULL, pathname);
903 llapi_error(LLAPI_MSG_ERROR, rc,
904 "Lustre filesystem '%s' not found",
909 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
910 sprintf(path, "%s/%s", pathname, pool);
911 fd = fopen(path, "r");
914 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open %s", path);
919 while (fgets(buf, sizeof(buf), fd) != NULL) {
920 if (nb_entries >= list_size) {
925 tmp = strchr(buf, '\n');
928 if (used + strlen(buf) + 1 > buffer_size) {
933 strcpy(buffer + used, buf);
934 members[nb_entries] = buffer + used;
935 used += strlen(buf) + 1;
945 * Get the list of pools in a filesystem.
946 * \param name filesystem name or path
947 * \param poollist caller-allocated array of char*
948 * \param list_size size of the poollist array
949 * \param buffer caller-allocated buffer for storing pool names
950 * \param buffer_size size of the buffer
952 * \return number of pools retrieved for this filesystem
953 * \retval -error failure
955 int llapi_get_poollist(const char *name, char **poollist, int list_size,
956 char *buffer, int buffer_size)
958 char fsname[PATH_MAX + 1], rname[PATH_MAX + 1], pathname[PATH_MAX + 1];
962 struct dirent *cookie = NULL;
964 unsigned int nb_entries = 0;
965 unsigned int used = 0;
968 /* initilize output array */
969 for (i = 0; i < list_size; i++)
972 /* is name a pathname ? */
973 ptr = strchr(name, '/');
975 /* only absolute pathname is supported */
979 if (!realpath(name, rname)) {
981 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
986 rc = poolpath(NULL, rname, pathname);
988 llapi_error(LLAPI_MSG_ERROR, rc, "'%s' is not"
989 " a Lustre filesystem", name);
992 strcpy(fsname, rname);
995 strcpy(fsname, name);
996 rc = poolpath(fsname, NULL, pathname);
999 llapi_error(LLAPI_MSG_ERROR, rc,
1000 "Lustre filesystem '%s' not found", name);
1004 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1005 dir = opendir(pathname);
1008 llapi_error(LLAPI_MSG_ERROR, rc,
1009 "Could not open pool list for '%s'",
1015 rc = readdir_r(dir, &pool, &cookie);
1019 llapi_error(LLAPI_MSG_ERROR, rc,
1020 "Error reading pool list for '%s'", name);
1022 } else if ((rc == 0) && (cookie == NULL)) {
1023 /* end of directory */
1027 /* ignore . and .. */
1028 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1031 /* check output bounds */
1032 if (nb_entries >= list_size) {
1037 /* +2 for '.' and final '\0' */
1038 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1044 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1045 poollist[nb_entries] = buffer + used;
1046 used += strlen(pool.d_name) + strlen(fsname) + 2;
1052 return ((rc != 0) ? rc : nb_entries);
1055 /* wrapper for lfs.c and obd.c */
1056 int llapi_poollist(const char *name)
1058 /* list of pool names (assume that pool count is smaller
1060 char **list, *buffer = NULL, *path = NULL, *fsname = NULL;
1061 int obdcount, bufsize, rc, nb, i;
1062 char *poolname = NULL, *tmp = NULL, data[16];
1064 if (name[0] != '/') {
1065 fsname = strdup(name);
1066 poolname = strchr(fsname, '.');
1070 path = (char *) name;
1073 rc = get_param_obdvar(fsname, path, "lov", "numobd",
1074 data, sizeof(data));
1077 obdcount = atoi(data);
1079 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1080 * and also an array to store the pointers for all that
1081 * allocated space. */
1083 bufsize = sizeof(struct obd_uuid) * obdcount;
1084 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1085 if (buffer == NULL) {
1089 list = (char **) (buffer + bufsize);
1092 /* name is a path or fsname */
1093 nb = llapi_get_poollist(name, list, obdcount,
1096 /* name is a pool name (<fsname>.<poolname>) */
1097 nb = llapi_get_poolmembers(name, list, obdcount,
1101 if (nb == -EOVERFLOW) {
1104 goto retry_get_pools;
1107 for (i = 0; i < nb; i++)
1108 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1109 rc = (nb < 0 ? nb : 0);
1118 typedef int (semantic_func_t)(char *path, DIR *parent, DIR *d,
1119 void *data, cfs_dirent_t *de);
1121 #define OBD_NOT_FOUND (-1)
1123 static int common_param_init(struct find_param *param, char *path)
1125 param->lumlen = get_mds_md_size(path);
1126 param->lmd = malloc(sizeof(lstat_t) + param->lumlen);
1127 if (param->lmd == NULL) {
1128 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1129 "error: allocation of %d bytes for ioctl",
1130 sizeof(lstat_t) + param->lumlen);
1134 param->got_uuids = 0;
1135 param->obdindexes = NULL;
1136 param->obdindex = OBD_NOT_FOUND;
1140 static void find_param_fini(struct find_param *param)
1142 if (param->obdindexes)
1143 free(param->obdindexes);
1149 static int cb_common_fini(char *path, DIR *parent, DIR *d, void *data,
1152 struct find_param *param = (struct find_param *)data;
1157 /* set errno upon failure */
1158 static DIR *opendir_parent(char *path)
1164 fname = strrchr(path, '/');
1166 return opendir(".");
1170 parent = opendir(path);
1175 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1176 struct lov_user_mds_data *lmd, int lumlen)
1178 lstat_t *st = &lmd->lmd_st;
1181 if (parent == NULL && dir == NULL)
1185 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1186 } else if (parent) {
1187 char *fname = strrchr(path, '/');
1189 fname = (fname == NULL ? path : fname + 1);
1190 /* retrieve needed file info */
1191 strncpy((char *)lmd, fname, lumlen);
1192 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1198 if (errno == ENOTTY) {
1199 /* ioctl is not supported, it is not a lustre fs.
1200 * Do the regular lstat(2) instead. */
1201 ret = lstat_f(path, st);
1204 llapi_error(LLAPI_MSG_ERROR, ret,
1205 "error: %s: lstat failed for %s",
1208 } else if (errno == ENOENT) {
1210 llapi_error(LLAPI_MSG_WARN, ret,
1211 "warning: %s: %s does not exist",
1213 } else if (errno != EISDIR) {
1215 llapi_error(LLAPI_MSG_ERROR, ret,
1216 "%s ioctl failed for %s.",
1217 dir ? "LL_IOC_MDC_GETINFO" :
1218 "IOC_MDC_GETFILEINFO", path);
1221 llapi_error(LLAPI_MSG_ERROR, ret,
1222 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1229 int llapi_mds_getfileinfo(char *path, DIR *parent,
1230 struct lov_user_mds_data *lmd)
1232 int lumlen = get_mds_md_size(path);
1234 return get_lmd_info(path, parent, NULL, lmd, lumlen);
1237 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1238 semantic_func_t sem_init,
1239 semantic_func_t sem_fini, void *data,
1250 if (!d && errno != ENOTDIR) {
1252 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1255 } else if (!d && !parent) {
1256 /* ENOTDIR. Open the parent dir. */
1257 p = opendir_parent(path);
1259 GOTO(out, ret = -errno);
1262 if (sem_init && (ret = sem_init(path, parent ?: p, d, data, de)))
1268 while ((dent = readdir64(d)) != NULL) {
1269 ((struct find_param *)data)->have_fileinfo = 0;
1271 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1274 /* Don't traverse .lustre directory */
1275 if (!(strcmp(dent->d_name, dot_lustre_name)))
1279 if ((len + dent->d_reclen + 2) > size) {
1280 llapi_err_noerrno(LLAPI_MSG_ERROR,
1281 "error: %s: string buffer is too small",
1286 strcat(path, dent->d_name);
1288 if (dent->d_type == DT_UNKNOWN) {
1289 lstat_t *st = &((struct find_param *)data)->lmd->lmd_st;
1291 ret = llapi_mds_getfileinfo(path, d,
1292 ((struct find_param *)data)->lmd);
1294 ((struct find_param *)data)->have_fileinfo = 1;
1296 llapi_filetype_dir_table[st->st_mode &
1303 switch (dent->d_type) {
1305 llapi_err_noerrno(LLAPI_MSG_ERROR,
1306 "error: %s: '%s' is UNKNOWN type %d",
1307 __func__, dent->d_name, dent->d_type);
1310 ret = llapi_semantic_traverse(path, size, d, sem_init,
1311 sem_fini, data, dent);
1318 ret = sem_init(path, d, NULL, data, dent);
1322 if (sem_fini && ret == 0)
1323 sem_fini(path, d, NULL, data, dent);
1331 sem_fini(path, parent, d, data, de);
1340 static int param_callback(char *path, semantic_func_t sem_init,
1341 semantic_func_t sem_fini, struct find_param *param)
1343 int ret, len = strlen(path);
1346 if (len > PATH_MAX) {
1348 llapi_error(LLAPI_MSG_ERROR, ret,
1349 "Path name '%s' is too long", path);
1353 buf = (char *)malloc(PATH_MAX + 1);
1357 strncpy(buf, path, PATH_MAX + 1);
1358 ret = common_param_init(param, buf);
1363 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1364 sem_fini, param, NULL);
1366 find_param_fini(param);
1368 return ret < 0 ? ret : 0;
1371 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1373 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1376 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1381 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1383 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1386 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1391 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1395 fd = open(path, O_RDONLY);
1398 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1402 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1413 * If uuidp is NULL, return the number of available obd uuids.
1414 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1415 * there are more OSTs then allocated to uuidp, then an error is returned with
1416 * the ost_count set to number of available obd uuids.
1418 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1419 int *ost_count, enum tgt_type type)
1421 struct obd_uuid name;
1424 int rc = 0, index = 0;
1426 /* Get the lov name */
1427 if (type == LOV_TYPE) {
1428 rc = llapi_file_fget_lov_uuid(fd, &name);
1432 rc = llapi_file_fget_lmv_uuid(fd, &name);
1437 /* Now get the ost uuids from /proc */
1438 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1439 type == LOV_TYPE ? "lov" : "lmv", name.uuid);
1440 fp = fopen(buf, "r");
1443 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1447 while (fgets(buf, sizeof(buf), fp) != NULL) {
1448 if (uuidp && (index < *ost_count)) {
1449 if (sscanf(buf, "%d: %s", &index, uuidp[index].uuid) <2)
1457 if (uuidp && (index > *ost_count))
1464 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1466 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1469 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1474 root = opendir(mnt);
1477 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1482 rc = ioctl(dirfd(root), LL_IOC_GETOBDCOUNT, count);
1490 /* Check if user specified value matches a real uuid. Ignore _UUID,
1491 * -osc-4ba41334, other trailing gunk in comparison.
1492 * @param real_uuid ends in "_UUID"
1493 * @param search_uuid may or may not end in "_UUID"
1495 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1497 int cmplen = strlen(real_uuid);
1498 int searchlen = strlen(search_uuid);
1500 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1502 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1505 /* The UUIDs may legitimately be different lengths, if
1506 * the system was upgraded from an older version. */
1507 if (cmplen != searchlen)
1510 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1513 /* Here, param->obduuid points to a single obduuid, the index of which is
1514 * returned in param->obdindex */
1515 static int setup_obd_uuid(DIR *dir, char *dname, struct find_param *param)
1517 struct obd_uuid obd_uuid;
1518 char uuid[sizeof(struct obd_uuid)];
1523 if (param->got_uuids)
1526 /* Get the lov/lmv name */
1528 rc = llapi_file_fget_lmv_uuid(dirfd(dir), &obd_uuid);
1530 rc = llapi_file_fget_lov_uuid(dirfd(dir), &obd_uuid);
1532 if (rc != -ENOTTY) {
1533 llapi_error(LLAPI_MSG_ERROR, rc,
1534 "error: can't get lov name: %s", dname);
1541 param->got_uuids = 1;
1543 /* Now get the ost uuids from /proc */
1544 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1545 param->get_lmv ? "lmv" : "lov", obd_uuid.uuid);
1546 fp = fopen(buf, "r");
1549 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1553 if (!param->obduuid && !param->quiet && !param->obds_printed)
1554 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
1555 param->get_lmv ? "MDTS" : "OBDS:");
1557 while (fgets(buf, sizeof(buf), fp) != NULL) {
1558 if (sscanf(buf, "%d: %s", &index, uuid) < 2)
1561 if (param->obduuid) {
1562 if (llapi_uuid_match(uuid, param->obduuid->uuid)) {
1563 param->obdindex = index;
1566 } else if (!param->quiet && !param->obds_printed) {
1567 /* Print everything */
1568 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
1571 param->obds_printed = 1;
1575 if (param->obduuid && (param->obdindex == OBD_NOT_FOUND)) {
1576 llapi_err_noerrno(LLAPI_MSG_ERROR,
1577 "error: %s: unknown obduuid: %s",
1578 __func__, param->obduuid->uuid);
1585 /* In this case, param->obduuid will be an array of obduuids and
1586 * obd index for all these obduuids will be returned in
1587 * param->obdindexes */
1588 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
1589 int num_obds, int **obdindexes, int *obdindex,
1592 int ret, obdcount, obd_valid = 0, obdnum, i;
1593 struct obd_uuid *uuids = NULL;
1597 ret = get_param_obdvar(NULL, path, type == LOV_TYPE ? "lov" : "lmv",
1598 "numobd", buf, sizeof(buf));
1602 obdcount = atoi(buf);
1603 uuids = (struct obd_uuid *)malloc(obdcount *
1604 sizeof(struct obd_uuid));
1609 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
1611 struct obd_uuid *uuids_temp;
1613 if (ret == -EOVERFLOW) {
1614 uuids_temp = realloc(uuids, obdcount *
1615 sizeof(struct obd_uuid));
1616 if (uuids_temp != NULL) {
1618 goto retry_get_uuids;
1624 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
1628 indexes = malloc(num_obds * sizeof(*obdindex));
1629 if (indexes == NULL) {
1634 for (obdnum = 0; obdnum < num_obds; obdnum++) {
1637 /* The user may have specified a simple index */
1638 i = strtol(obduuids[obdnum].uuid, &end, 0);
1639 if (end && *end == '\0' && i < obdcount) {
1640 indexes[obdnum] = i;
1643 for (i = 0; i < obdcount; i++) {
1644 if (llapi_uuid_match(uuids[i].uuid,
1645 obduuids[obdnum].uuid)) {
1646 indexes[obdnum] = i;
1652 if (i >= obdcount) {
1653 indexes[obdnum] = OBD_NOT_FOUND;
1654 llapi_err_noerrno(LLAPI_MSG_ERROR,
1655 "error: %s: unknown obduuid: %s",
1656 __func__, obduuids[obdnum].uuid);
1662 *obdindex = OBD_NOT_FOUND;
1664 *obdindex = obd_valid;
1666 *obdindexes = indexes;
1674 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
1678 if (param->mdtuuid) {
1679 ret = setup_indexes(dir, path, param->mdtuuid, param->num_mdts,
1680 ¶m->mdtindexes, ¶m->mdtindex, LMV_TYPE);
1684 if (param->obduuid) {
1685 ret = setup_indexes(dir, path, param->obduuid, param->num_obds,
1686 ¶m->obdindexes, ¶m->obdindex, LOV_TYPE);
1690 param->got_uuids = 1;
1694 int llapi_ostlist(char *path, struct find_param *param)
1699 dir = opendir(path);
1703 ret = setup_obd_uuid(dir, path, param);
1710 * Given a filesystem name, or a pathname of a file on a lustre filesystem,
1711 * tries to determine the path to the filesystem's clilov directory under /proc
1713 * fsname is limited to MTI_NAME_MAXLEN in lustre_idl.h
1714 * The NUL terminator is compensated by the additional "%s" bytes. */
1715 #define LOV_LEN (sizeof("/proc/fs/lustre/lov/%s-clilov-*") + MTI_NAME_MAXLEN)
1716 static int clilovpath(const char *fsname, const char *const pathname,
1720 char pattern[LOV_LEN];
1721 char buffer[PATH_MAX + 1];
1723 if (fsname == NULL) {
1724 rc = llapi_search_fsname(pathname, buffer);
1730 snprintf(pattern, sizeof(pattern), "/proc/fs/lustre/lov/%s-clilov-*",
1733 rc = first_match(pattern, buffer);
1737 strncpy(clilovpath, buffer, sizeof(buffer));
1743 * Given the path to a stripe attribute proc file, tries to open and
1744 * read the attribute and return the value using the attr parameter
1746 static int sattr_read_attr(const char *const fpath,
1751 char line[PATH_MAX + 1];
1754 f = fopen(fpath, "r");
1757 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open '%s'", fpath);
1761 if (fgets(line, sizeof(line), f) != NULL) {
1764 llapi_error(LLAPI_MSG_ERROR, errno, "Cannot read from '%s'", fpath);
1773 * Tries to determine the default stripe attributes for a given filesystem. The
1774 * filesystem to check should be specified by fsname, or will be determined
1777 static int sattr_get_defaults(const char *const fsname,
1778 const char *const pathname,
1779 unsigned int *scount,
1780 unsigned int *ssize,
1781 unsigned int *soffset)
1784 char dpath[PATH_MAX + 1];
1785 char fpath[PATH_MAX + 1];
1787 rc = clilovpath(fsname, pathname, dpath);
1792 snprintf(fpath, PATH_MAX, "%s/stripecount", dpath);
1793 rc = sattr_read_attr(fpath, scount);
1799 snprintf(fpath, PATH_MAX, "%s/stripesize", dpath);
1800 rc = sattr_read_attr(fpath, ssize);
1806 snprintf(fpath, PATH_MAX, "%s/stripeoffset", dpath);
1807 rc = sattr_read_attr(fpath, soffset);
1816 * Tries to gather the default stripe attributes for a given filesystem. If
1817 * the attributes can be determined, they are cached for easy retreival the
1818 * next time they are needed. Only a single filesystem's attributes are
1821 static int sattr_cache_get_defaults(const char *const fsname,
1822 const char *const pathname,
1823 unsigned int *scount,
1824 unsigned int *ssize,
1825 unsigned int *soffset)
1828 char fsname[PATH_MAX + 1];
1829 unsigned int stripecount;
1830 unsigned int stripesize;
1831 unsigned int stripeoffset;
1837 char fsname_buf[PATH_MAX + 1];
1838 unsigned int tmp[3];
1840 if (fsname == NULL) {
1841 rc = llapi_search_fsname(pathname, fsname_buf);
1845 strncpy(fsname_buf, fsname, PATH_MAX);
1848 if (strncmp(fsname_buf, cache.fsname, PATH_MAX) != 0) {
1850 * Ensure all 3 sattrs (count, size, and offset) are
1851 * successfully retrieved and stored in tmp before writing to
1854 rc = sattr_get_defaults(fsname_buf, NULL, &tmp[0], &tmp[1],
1859 cache.stripecount = tmp[0];
1860 cache.stripesize = tmp[1];
1861 cache.stripeoffset = tmp[2];
1862 strncpy(cache.fsname, fsname_buf, PATH_MAX);
1866 *scount = cache.stripecount;
1868 *ssize = cache.stripesize;
1870 *soffset = cache.stripeoffset;
1875 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
1876 struct lov_user_ost_data_v1 *objects,
1877 int is_dir, int verbose, int depth,
1878 int raw, char *pool_name)
1880 char *prefix = is_dir ? "" : "lmm_";
1881 char nl = is_dir ? ' ' : '\n';
1884 if (is_dir && lum->lmm_object_seq == FID_SEQ_LOV_DEFAULT) {
1885 lum->lmm_object_seq = FID_SEQ_OST_MDT0;
1886 if (verbose & VERBOSE_DETAIL)
1887 llapi_printf(LLAPI_MSG_NORMAL, "(Default) ");
1890 if (depth && path && ((verbose != VERBOSE_OBJID) || !is_dir))
1891 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
1893 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
1894 llapi_printf(LLAPI_MSG_NORMAL, "lmm_magic: 0x%08X\n",
1896 llapi_printf(LLAPI_MSG_NORMAL, "lmm_seq: "LPX64"\n",
1897 lum->lmm_object_seq);
1898 llapi_printf(LLAPI_MSG_NORMAL, "lmm_object_id: "LPX64"\n",
1899 lum->lmm_object_id);
1902 if (verbose & VERBOSE_COUNT) {
1903 if (verbose & ~VERBOSE_COUNT)
1904 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_count: ",
1907 if (!raw && lum->lmm_stripe_count == 0) {
1908 unsigned int scount;
1909 rc = sattr_cache_get_defaults(NULL, path,
1913 llapi_printf(LLAPI_MSG_NORMAL, "%d%c",
1916 llapi_error(LLAPI_MSG_ERROR, rc,
1917 "Cannot determine default"
1920 llapi_printf(LLAPI_MSG_NORMAL, "%d%c",
1921 lum->lmm_stripe_count ==
1922 (typeof(lum->lmm_stripe_count))(-1)
1923 ? -1 : lum->lmm_stripe_count, nl);
1926 llapi_printf(LLAPI_MSG_NORMAL, "%hd%c",
1927 (__s16)lum->lmm_stripe_count, nl);
1931 if (verbose & VERBOSE_SIZE) {
1932 if (verbose & ~VERBOSE_SIZE)
1933 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_size: ",
1935 if (is_dir && !raw && lum->lmm_stripe_size == 0) {
1937 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
1940 llapi_printf(LLAPI_MSG_NORMAL, "%u%c", ssize,
1943 llapi_error(LLAPI_MSG_ERROR, rc,
1944 "Cannot determine default"
1947 llapi_printf(LLAPI_MSG_NORMAL, "%u%c",
1948 lum->lmm_stripe_size, nl);
1952 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
1953 llapi_printf(LLAPI_MSG_NORMAL, "lmm_stripe_pattern: %x%c",
1954 lum->lmm_pattern, nl);
1957 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
1958 if (verbose & ~VERBOSE_GENERATION)
1959 llapi_printf(LLAPI_MSG_NORMAL, "%slayout_gen: ",
1961 llapi_printf(LLAPI_MSG_NORMAL, "%u%c",
1962 (int)lum->u.lum_layout_gen, nl);
1965 if (verbose & VERBOSE_OFFSET) {
1966 if (verbose & ~VERBOSE_OFFSET)
1967 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_offset: ",
1970 llapi_printf(LLAPI_MSG_NORMAL, "%d%c",
1971 lum->lmm_stripe_offset ==
1972 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
1973 lum->lmm_stripe_offset, nl);
1975 llapi_printf(LLAPI_MSG_NORMAL, "%u%c",
1976 objects[0].l_ost_idx, nl);
1979 if ((verbose & VERBOSE_POOL) && (pool_name != NULL)) {
1980 if (verbose & ~VERBOSE_POOL)
1981 llapi_printf(LLAPI_MSG_NORMAL, "%spool: ",
1983 llapi_printf(LLAPI_MSG_NORMAL, "%s%c", pool_name, nl);
1986 if (is_dir && (verbose != VERBOSE_OBJID))
1987 llapi_printf(LLAPI_MSG_NORMAL, "\n");
1990 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
1991 struct lov_user_ost_data_v1 *objects,
1992 char *path, int is_dir, int obdindex,
1993 int depth, int header, int raw)
1995 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
1998 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
1999 if (obdindex == objects[i].l_ost_idx) {
2007 lov_dump_user_lmm_header(lum, path, objects, is_dir, header,
2008 depth, raw, pool_name);
2010 if (!is_dir && (header & VERBOSE_OBJID)) {
2012 llapi_printf(LLAPI_MSG_NORMAL,
2013 "\tobdidx\t\t objid\t\tobjid\t\t group\n");
2015 for (i = 0; i < lum->lmm_stripe_count; i++) {
2016 int idx = objects[i].l_ost_idx;
2017 long long oid = objects[i].l_object_id;
2018 long long gr = objects[i].l_object_seq;
2019 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2020 llapi_printf(LLAPI_MSG_NORMAL,
2021 "\t%6u\t%14llu\t%#13llx\t%14llu%s\n",
2023 obdindex == idx ? " *" : "");
2025 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2029 void llapi_lov_dump_user_lmm(struct find_param *param,
2030 char *path, int is_dir)
2032 switch(*(__u32 *)¶m->lmd->lmd_lmm) { /* lum->lmm_magic */
2033 case LOV_USER_MAGIC_V1:
2034 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, NULL,
2035 param->lmd->lmd_lmm.lmm_objects,
2037 param->obdindex, param->maxdepth,
2038 param->verbose, param->raw);
2040 case LOV_USER_MAGIC_V3: {
2041 char pool_name[LOV_MAXPOOLNAME + 1];
2042 struct lov_user_ost_data_v1 *objects;
2043 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2045 strncpy(pool_name, lmmv3->lmm_pool_name, LOV_MAXPOOLNAME);
2046 pool_name[LOV_MAXPOOLNAME] = '\0';
2047 objects = lmmv3->lmm_objects;
2048 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, pool_name,
2049 objects, path, is_dir,
2050 param->obdindex, param->maxdepth,
2051 param->verbose, param->raw);
2055 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
2056 "(expecting one of %#x %#x %#x)\n",
2057 *(__u32 *)¶m->lmd->lmd_lmm,
2058 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3);
2063 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
2069 fname = strrchr(path, '/');
2071 /* It should be a file (or other non-directory) */
2072 if (fname == NULL) {
2073 dname = (char *)malloc(2);
2077 fname = (char *)path;
2079 dname = (char *)malloc(fname - path + 1);
2082 strncpy(dname, path, fname - path);
2083 dname[fname - path] = '\0';
2087 fd = open(dname, O_RDONLY);
2094 strcpy((char *)lum, fname);
2095 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
2098 if (close(fd) == -1 && rc == 0)
2105 int llapi_file_lookup(int dirfd, const char *name)
2107 struct obd_ioctl_data data = { 0 };
2112 if (dirfd < 0 || name == NULL)
2115 data.ioc_version = OBD_IOCTL_VERSION;
2116 data.ioc_len = sizeof(data);
2117 data.ioc_inlbuf1 = (char *)name;
2118 data.ioc_inllen1 = strlen(name) + 1;
2120 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
2122 llapi_error(LLAPI_MSG_ERROR, rc,
2123 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
2128 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
2134 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2135 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2137 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2138 * The table below gives the answers for the specified parameters (value and
2139 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2140 * --------------------------------------
2141 * 1 | file > limit; sign > 0 | -1 / -1 |
2142 * 2 | file = limit; sign > 0 | -1 / -1 |
2143 * 3 | file < limit; sign > 0 | ? / 1 |
2144 * 4 | file > limit; sign = 0 | -1 / -1 |
2145 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2146 * 6 | file < limit; sign = 0 | ? / -1 |
2147 * 7 | file > limit; sign < 0 | 1 / 1 |
2148 * 8 | file = limit; sign < 0 | ? / -1 |
2149 * 9 | file < limit; sign < 0 | ? / -1 |
2150 * --------------------------------------
2151 * Note: 5th actually means that the value is within the interval
2152 * (limit - margin, limit]. */
2153 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2154 int sign, int negopt, unsigned long long margin,
2160 /* Drop the fraction of margin (of days). */
2161 if (file + margin <= limit)
2163 } else if (sign == 0) {
2164 if (file <= limit && file + margin > limit)
2166 else if (file + margin <= limit)
2168 } else if (sign < 0) {
2175 return negopt ? ~ret + 1 : ret;
2178 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
2179 * Return -1 or 1 if file timestamp does not or does match the given criteria
2180 * correspondingly. Return 0 if the MDS time is being checked and there are
2181 * attributes on OSTs and it is not yet clear if the timespamp matches.
2183 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
2184 * updated timestamps. */
2185 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
2190 /* Check if file is accepted. */
2192 ret = find_value_cmp(st->st_atime, param->atime,
2193 param->asign, param->exclude_atime,
2201 ret = find_value_cmp(st->st_mtime, param->mtime,
2202 param->msign, param->exclude_mtime,
2207 /* If the previous check matches, but this one is not yet clear,
2208 * we should return 0 to do an RPC on OSTs. */
2214 ret = find_value_cmp(st->st_ctime, param->ctime,
2215 param->csign, param->exclude_ctime,
2220 /* If the previous check matches, but this one is not yet clear,
2221 * we should return 0 to do an RPC on OSTs. */
2230 * Check whether the stripes matches the indexes user provided
2234 static int check_obd_match(struct find_param *param)
2236 lstat_t *st = ¶m->lmd->lmd_st;
2237 struct lov_user_ost_data_v1 *lmm_objects;
2240 if (param->obduuid && param->obdindex == OBD_NOT_FOUND)
2243 if (!S_ISREG(st->st_mode))
2246 /* Only those files should be accepted, which have a
2247 * stripe on the specified OST. */
2248 if (!param->lmd->lmd_lmm.lmm_stripe_count)
2251 if (param->lmd->lmd_lmm.lmm_magic ==
2252 LOV_USER_MAGIC_V3) {
2253 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2255 lmm_objects = lmmv3->lmm_objects;
2256 } else if (param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) {
2257 lmm_objects = param->lmd->lmd_lmm.lmm_objects;
2259 llapi_err_noerrno(LLAPI_MSG_ERROR, "%s:Unknown magic: 0x%08X\n",
2260 __func__, param->lmd->lmd_lmm.lmm_magic);
2264 for (i = 0; i < param->lmd->lmd_lmm.lmm_stripe_count; i++) {
2265 for (j = 0; j < param->num_obds; j++) {
2266 if (param->obdindexes[j] ==
2267 lmm_objects[i].l_ost_idx) {
2268 if (param->exclude_obd)
2275 if (param->exclude_obd)
2280 static int check_mdt_match(struct find_param *param)
2284 if (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND)
2287 /* FIXME: For striped dir, we should get stripe information and check */
2288 for (i = 0; i < param->num_mdts; i++) {
2289 if (param->mdtindexes[i] == param->file_mdtindex)
2290 if (param->exclude_mdt)
2295 if (param->exclude_mdt)
2301 * Check whether the obd is active or not, if it is
2302 * not active, just print the object affected by this
2305 static int print_failed_tgt(struct find_param *param, char *path, int type)
2307 struct obd_statfs stat_buf;
2308 struct obd_uuid uuid_buf;
2311 LASSERT(type == LL_STATFS_LOV || type == LL_STATFS_LMV);
2313 memset(&stat_buf, 0, sizeof(struct obd_statfs));
2314 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
2315 ret = llapi_obd_statfs(path, type,
2316 param->obdindex, &stat_buf,
2319 llapi_printf(LLAPI_MSG_NORMAL,
2320 "obd_uuid: %s failed %s ",
2321 param->obduuid->uuid,
2327 static int cb_find_init(char *path, DIR *parent, DIR *dir,
2328 void *data, cfs_dirent_t *de)
2330 struct find_param *param = (struct find_param *)data;
2331 int decision = 1; /* 1 is accepted; -1 is rejected. */
2332 lstat_t *st = ¶m->lmd->lmd_st;
2334 int checked_type = 0;
2337 LASSERT(parent != NULL || dir != NULL);
2339 if (param->have_fileinfo == 0)
2340 param->lmd->lmd_lmm.lmm_stripe_count = 0;
2342 /* If a regular expression is presented, make the initial decision */
2343 if (param->pattern != NULL) {
2344 char *fname = strrchr(path, '/');
2345 fname = (fname == NULL ? path : fname + 1);
2346 ret = fnmatch(param->pattern, fname, 0);
2347 if ((ret == FNM_NOMATCH && !param->exclude_pattern) ||
2348 (ret == 0 && param->exclude_pattern))
2352 /* See if we can check the file type from the dirent. */
2353 if (param->type && de != NULL && de->d_type != DT_UNKNOWN &&
2354 de->d_type < DT_MAX) {
2356 if (llapi_dir_filetype_table[de->d_type] == param->type) {
2357 if (param->exclude_type)
2360 if (!param->exclude_type)
2367 /* Request MDS for the stat info if some of these parameters need
2368 * to be compared. */
2369 if (param->obduuid || param->mdtuuid || param->check_uid ||
2370 param->check_gid || param->check_pool || param->atime ||
2371 param->ctime || param->mtime || param->check_size ||
2372 param->check_stripecount || param->check_stripesize)
2375 if (param->type && checked_type == 0)
2378 if (param->have_fileinfo == 0 && decision == 0) {
2379 ret = get_lmd_info(path, parent, dir, param->lmd,
2383 ret = llapi_file_fget_mdtidx(dirfd(dir),
2384 ¶m->file_mdtindex);
2389 ret = lstat_f(path, &tmp_st);
2392 llapi_error(LLAPI_MSG_ERROR, ret,
2393 "error: %s: lstat failed"
2394 "for %s", __func__, path);
2397 if (S_ISREG(tmp_st.st_mode)) {
2398 fd = open(path, O_RDONLY);
2400 ret = llapi_file_fget_mdtidx(fd,
2401 ¶m->file_mdtindex);
2407 /* For special inode, it assumes to
2408 * reside on the same MDT with the
2411 ret = llapi_file_fget_mdtidx(fd,
2412 ¶m->file_mdtindex);
2425 if (param->type && !checked_type) {
2426 if ((st->st_mode & S_IFMT) == param->type) {
2427 if (param->exclude_type)
2430 if (!param->exclude_type)
2436 if (param->obduuid || param->mdtuuid) {
2437 if (lustre_fs && param->got_uuids &&
2438 param->st_dev != st->st_dev) {
2439 /* A lustre/lustre mount point is crossed. */
2440 param->got_uuids = 0;
2441 param->obds_printed = 0;
2442 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2445 if (lustre_fs && !param->got_uuids) {
2446 ret = setup_target_indexes(dir ? dir : parent, path,
2451 param->st_dev = st->st_dev;
2452 } else if (!lustre_fs && param->got_uuids) {
2453 /* A lustre/non-lustre mount point is crossed. */
2454 param->got_uuids = 0;
2455 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2459 if (param->check_stripesize) {
2460 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_size,
2462 param->stripesize_sign,
2463 param->exclude_stripesize,
2464 param->stripesize_units, 0);
2469 if (param->check_stripecount) {
2470 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_count,
2472 param->stripecount_sign,
2473 param->exclude_stripecount, 1, 0);
2478 /* If an OBD UUID is specified but none matches, skip this file. */
2479 if ((param->obduuid && param->obdindex == OBD_NOT_FOUND) ||
2480 (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND))
2483 /* If a OST or MDT UUID is given, and some OST matches,
2485 if (param->obdindex != OBD_NOT_FOUND ||
2486 param->mdtindex != OBD_NOT_FOUND) {
2487 if (param->obduuid) {
2488 if (check_obd_match(param)) {
2489 /* If no mdtuuid is given, we are done.
2490 * Otherwise, fall through to the mdtuuid
2492 if (!param->mdtuuid)
2498 if (param->mdtuuid) {
2499 if (check_mdt_match(param))
2505 if (param->check_uid) {
2506 if (st->st_uid == param->uid) {
2507 if (param->exclude_uid)
2510 if (!param->exclude_uid)
2515 if (param->check_gid) {
2516 if (st->st_gid == param->gid) {
2517 if (param->exclude_gid)
2520 if (!param->exclude_gid)
2525 if (param->check_pool) {
2526 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2528 /* empty requested pool is taken as no pool search => V1 */
2529 if (((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) &&
2530 (param->poolname[0] == '\0')) ||
2531 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
2532 (strncmp(lmmv3->lmm_pool_name,
2533 param->poolname, LOV_MAXPOOLNAME) == 0)) ||
2534 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
2535 (strcmp(param->poolname, "*") == 0))) {
2536 if (param->exclude_pool)
2539 if (!param->exclude_pool)
2544 /* Check the time on mds. */
2546 if (param->atime || param->ctime || param->mtime) {
2549 for_mds = lustre_fs ? (S_ISREG(st->st_mode) &&
2550 param->lmd->lmd_lmm.lmm_stripe_count)
2552 decision = find_time_check(st, param, for_mds);
2557 /* If file still fits the request, ask ost for updated info.
2558 The regular stat is almost of the same speed as some new
2559 'glimpse-size-ioctl'. */
2561 if (param->check_size && S_ISREG(st->st_mode) &&
2562 param->lmd->lmd_lmm.lmm_stripe_count)
2566 /* For regular files with the stripe the decision may have not
2567 * been taken yet if *time or size is to be checked. */
2568 LASSERT((S_ISREG(st->st_mode) &&
2569 param->lmd->lmd_lmm.lmm_stripe_count) ||
2570 param->mdtindex != OBD_NOT_FOUND);
2572 if (param->obdindex != OBD_NOT_FOUND)
2573 print_failed_tgt(param, path, LL_STATFS_LOV);
2575 if (param->mdtindex != OBD_NOT_FOUND)
2576 print_failed_tgt(param, path, LL_STATFS_LMV);
2579 ret = ioctl(dirfd(dir), IOC_LOV_GETINFO,
2580 (void *)param->lmd);
2581 } else if (parent) {
2582 ret = ioctl(dirfd(parent), IOC_LOV_GETINFO,
2583 (void *)param->lmd);
2587 if (errno == ENOENT) {
2588 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
2589 "warning: %s: %s does not exist",
2594 llapi_error(LLAPI_MSG_ERROR, ret,
2595 "%s: IOC_LOV_GETINFO on %s failed",
2601 /* Check the time on osc. */
2602 decision = find_time_check(st, param, 0);
2609 if (param->check_size)
2610 decision = find_value_cmp(st->st_size, param->size,
2611 param->size_sign, param->exclude_size,
2612 param->size_units, 0);
2614 if (decision != -1) {
2615 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
2617 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
2619 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2623 /* Do not get down anymore? */
2624 if (param->depth == param->maxdepth)
2631 int llapi_find(char *path, struct find_param *param)
2633 return param_callback(path, cb_find_init, cb_common_fini, param);
2637 * Get MDT number that the file/directory inode referenced
2638 * by the open fd resides on.
2639 * Return 0 and mdtidx on success, or -ve errno.
2641 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
2643 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
2648 static int cb_get_mdt_index(char *path, DIR *parent, DIR *d, void *data,
2651 struct find_param *param = (struct find_param *)data;
2655 LASSERT(parent != NULL || d != NULL);
2658 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
2659 } else if (parent) {
2662 fd = open(path, O_RDONLY);
2664 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
2672 if (ret == -ENODATA) {
2673 if (!param->obduuid)
2674 llapi_printf(LLAPI_MSG_NORMAL,
2675 "%s has no stripe info\n", path);
2677 } else if (ret == -ENOENT) {
2678 llapi_error(LLAPI_MSG_WARN, ret,
2679 "warning: %s: %s does not exist",
2682 } else if (ret == -ENOTTY) {
2683 llapi_error(LLAPI_MSG_ERROR, ret,
2684 "%s: '%s' not on a Lustre fs?",
2687 llapi_error(LLAPI_MSG_ERROR, ret,
2688 "error: %s: LL_IOC_GET_MDTIDX failed for %s",
2694 if (param->quiet || !(param->verbose & VERBOSE_DETAIL))
2695 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
2697 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
2701 /* Do not get down anymore? */
2702 if (param->depth == param->maxdepth)
2709 static int cb_getstripe(char *path, DIR *parent, DIR *d, void *data,
2712 struct find_param *param = (struct find_param *)data;
2715 LASSERT(parent != NULL || d != NULL);
2717 if (param->obduuid) {
2719 ret = setup_obd_uuid(d ? d : parent, path, param);
2725 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
2726 (void *)¶m->lmd->lmd_lmm);
2727 } else if (parent) {
2728 char *fname = strrchr(path, '/');
2729 fname = (fname == NULL ? path : fname + 1);
2731 strncpy((char *)¶m->lmd->lmd_lmm, fname, param->lumlen);
2733 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
2734 (void *)¶m->lmd->lmd_lmm);
2738 if (errno == ENODATA && d != NULL) {
2739 /* We need to "fake" the "use the default" values
2740 * since the lmm struct is zeroed out at this point.
2741 * The magic needs to be set in order to satisfy
2742 * a check later on in the code path.
2743 * The object_seq needs to be set for the "(Default)"
2744 * prefix to be displayed. */
2745 struct lov_user_md *lmm = ¶m->lmd->lmd_lmm;
2746 lmm->lmm_magic = LOV_MAGIC_V1;
2748 lmm->lmm_object_seq = FID_SEQ_LOV_DEFAULT;
2749 lmm->lmm_stripe_count = 0;
2750 lmm->lmm_stripe_size = 0;
2751 lmm->lmm_stripe_offset = -1;
2754 } else if (errno == ENODATA && parent != NULL) {
2755 if (!param->obduuid)
2756 llapi_printf(LLAPI_MSG_NORMAL,
2757 "%s has no stripe info\n", path);
2759 } else if (errno == ENOENT) {
2760 llapi_error(LLAPI_MSG_WARN, -ENOENT,
2761 "warning: %s: %s does not exist",
2764 } else if (errno == ENOTTY) {
2766 llapi_error(LLAPI_MSG_ERROR, ret,
2767 "%s: '%s' not on a Lustre fs?",
2771 llapi_error(LLAPI_MSG_ERROR, ret,
2772 "error: %s: %s failed for %s",
2773 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
2774 "IOC_MDC_GETFILESTRIPE", path);
2781 if (!(param->verbose & VERBOSE_MDTINDEX))
2782 llapi_lov_dump_user_lmm(param, path, d ? 1 : 0);
2785 /* Do not get down anymore? */
2786 if (param->depth == param->maxdepth)
2793 int llapi_getstripe(char *path, struct find_param *param)
2795 return param_callback(path, (param->verbose & VERBOSE_MDTINDEX) ?
2796 cb_get_mdt_index : cb_getstripe,
2797 cb_common_fini, param);
2800 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
2801 struct obd_statfs *stat_buf,
2802 struct obd_uuid *uuid_buf)
2805 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
2807 struct obd_ioctl_data data = { 0 };
2810 data.ioc_inlbuf1 = (char *)&type;
2811 data.ioc_inllen1 = sizeof(__u32);
2812 data.ioc_inlbuf2 = (char *)&index;
2813 data.ioc_inllen2 = sizeof(__u32);
2814 data.ioc_pbuf1 = (char *)stat_buf;
2815 data.ioc_plen1 = sizeof(struct obd_statfs);
2816 data.ioc_pbuf2 = (char *)uuid_buf;
2817 data.ioc_plen2 = sizeof(struct obd_uuid);
2819 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
2821 llapi_error(LLAPI_MSG_ERROR, rc,
2822 "llapi_obd_statfs: error packing ioctl data");
2826 fd = open(path, O_RDONLY);
2827 if (errno == EISDIR)
2828 fd = open(path, O_DIRECTORY | O_RDONLY);
2831 rc = errno ? -errno : -EBADF;
2832 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
2836 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
2838 rc = errno ? -errno : -EINVAL;
2844 #define MAX_STRING_SIZE 128
2846 int llapi_ping(char *obd_type, char *obd_name)
2848 char path[MAX_STRING_SIZE];
2852 snprintf(path, MAX_STRING_SIZE, "/proc/fs/lustre/%s/%s/ping",
2853 obd_type, obd_name);
2855 fd = open(path, O_WRONLY);
2858 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
2862 rc = write(fd, buf, 1);
2872 int llapi_target_iterate(int type_num, char **obd_type,
2873 void *args, llapi_cb_t cb)
2875 char buf[MAX_STRING_SIZE];
2876 FILE *fp = fopen(DEVICES_LIST, "r");
2881 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
2885 while (fgets(buf, sizeof(buf), fp) != NULL) {
2886 char *obd_type_name = NULL;
2887 char *obd_name = NULL;
2888 char *obd_uuid = NULL;
2890 struct obd_statfs osfs_buffer;
2892 while(bufp[0] == ' ')
2895 for(i = 0; i < 3; i++) {
2896 obd_type_name = strsep(&bufp, " ");
2898 obd_name = strsep(&bufp, " ");
2899 obd_uuid = strsep(&bufp, " ");
2901 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
2903 for (i = 0; i < type_num; i++) {
2904 if (strcmp(obd_type_name, obd_type[i]) != 0)
2907 cb(obd_type_name, obd_name, obd_uuid, args);
2914 static void do_target_check(char *obd_type_name, char *obd_name,
2915 char *obd_uuid, void *args)
2919 rc = llapi_ping(obd_type_name, obd_name);
2920 if (rc == ENOTCONN) {
2921 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
2923 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
2925 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
2929 int llapi_target_check(int type_num, char **obd_type, char *dir)
2931 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
2934 #undef MAX_STRING_SIZE
2936 /* Is this a lustre fs? */
2937 int llapi_is_lustre_mnttype(const char *type)
2939 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
2942 /* Is this a lustre client fs? */
2943 int llapi_is_lustre_mnt(struct mntent *mnt)
2945 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
2946 strstr(mnt->mnt_fsname, ":/") != NULL);
2949 int llapi_quotacheck(char *mnt, int check_type)
2954 root = opendir(mnt);
2957 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2961 rc = ioctl(dirfd(root), LL_IOC_QUOTACHECK, check_type);
2969 int llapi_poll_quotacheck(char *mnt, struct if_quotacheck *qchk)
2975 root = opendir(mnt);
2978 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
2983 rc = ioctl(dirfd(root), LL_IOC_POLL_QUOTACHECK, qchk);
2987 if (poll_intvl < 30)
2995 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
3000 root = opendir(mnt);
3003 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3007 rc = ioctl(dirfd(root), LL_IOC_QUOTACTL, qctl);
3015 static int cb_quotachown(char *path, DIR *parent, DIR *d, void *data,
3018 struct find_param *param = (struct find_param *)data;
3022 LASSERT(parent != NULL || d != NULL);
3024 rc = get_lmd_info(path, parent, d, param->lmd, param->lumlen);
3026 if (rc == -ENODATA) {
3027 if (!param->obduuid && !param->quiet)
3028 llapi_error(LLAPI_MSG_ERROR, -ENODATA,
3029 "%s has no stripe info", path);
3031 } else if (rc == -ENOENT) {
3037 st = ¶m->lmd->lmd_st;
3039 /* libc chown() will do extra check, and if the real owner is
3040 * the same as the ones to set, it won't fall into kernel, so
3041 * invoke syscall directly. */
3042 rc = syscall(SYS_chown, path, -1, -1);
3044 llapi_error(LLAPI_MSG_ERROR, errno,
3045 "error: chown %s", path);
3047 rc = chmod(path, st->st_mode);
3050 llapi_error(LLAPI_MSG_ERROR, rc, "error: chmod %s (%hu)",
3057 int llapi_quotachown(char *path, int flag)
3059 struct find_param param;
3061 memset(¶m, 0, sizeof(param));
3062 param.recursive = 1;
3066 return param_callback(path, cb_quotachown, NULL, ¶m);
3072 #include <sys/wait.h>
3076 static int rmtacl_notify(int ops)
3080 int found = 0, fd = 0, rc = 0;
3082 fp = setmntent(MOUNTED, "r");
3085 llapi_error(LLAPI_MSG_ERROR, rc,
3086 "error setmntent(%s)", MOUNTED);
3091 mnt = getmntent(fp);
3095 if (!llapi_is_lustre_mnt(mnt))
3098 fd = open(mnt->mnt_dir, O_RDONLY | O_DIRECTORY);
3101 llapi_error(LLAPI_MSG_ERROR, rc,
3102 "Can't open '%s'\n", mnt->mnt_dir);
3106 rc = ioctl(fd, LL_IOC_RMTACL, ops);
3109 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d\n", fd);
3120 return ((rc != 0) ? rc : found);
3123 static char *next_token(char *p, int div)
3129 while (*p && *p != ':' && !isspace(*p))
3132 while (*p == ':' || isspace(*p))
3135 return *p ? p : NULL;
3138 static int rmtacl_name2id(char *name, int is_user)
3143 pw = getpwnam(name);
3147 return (int)(pw->pw_uid);
3151 gr = getgrnam(name);
3155 return (int)(gr->gr_gid);
3159 static int isodigit(int c)
3161 return (c >= '0' && c <= '7') ? 1 : 0;
3165 * Whether the name is just digits string (uid/gid) already or not.
3170 static int str_is_id(char *str)
3177 if (*str == 'x' || *str == 'X') { /* for Hex. */
3178 if (!isxdigit(*(++str)))
3181 while (isxdigit(*(++str)));
3182 } else if (isodigit(*str)) { /* for Oct. */
3183 while (isodigit(*(++str)));
3185 } else if (isdigit(*str)) { /* for Dec. */
3186 while (isdigit(*(++str)));
3189 return (*str == 0) ? 1 : 0;
3199 #define RMTACL_OPTNAME(name) name, sizeof(name) - 1
3201 static rmtacl_name_t rmtacl_namelist[] = {
3202 { RMTACL_OPTNAME("user:"), 1, 0 },
3203 { RMTACL_OPTNAME("group:"), 0, 0 },
3204 { RMTACL_OPTNAME("default:user:"), 1, 0 },
3205 { RMTACL_OPTNAME("default:group:"), 0, 0 },
3206 /* for --tabular option */
3207 { RMTACL_OPTNAME("user"), 1, 1 },
3208 { RMTACL_OPTNAME("group"), 0, 1 },
3212 static int rgetfacl_output(char *str)
3214 char *start = NULL, *end = NULL;
3215 int is_user = 0, n, id;
3222 for (rn = rmtacl_namelist; rn->name; rn++) {
3223 if(strncmp(str, rn->name, rn->length) == 0) {
3224 if (!rn->next_token)
3225 start = str + rn->length;
3227 start = next_token(str + rn->length, 0);
3228 is_user = rn->is_user;
3233 end = next_token(start, 1);
3234 if (end == NULL || start == end) {
3235 n = printf("%s", str);
3241 id = rmtacl_name2id(start, is_user);
3242 if (id == INVALID_ID) {
3243 if (str_is_id(start)) {
3245 n = printf("%s", str);
3248 } else if ((id == NOBODY_UID && is_user) ||
3249 (id == NOBODY_GID && !is_user)) {
3251 n = printf("%s", str);
3255 n = printf("%s%d%s", str, id, end);
3260 static int child_status(int status)
3262 return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
3265 static int do_rmtacl(int argc, char *argv[], int ops, int (output_func)(char *))
3268 int fd[2], status, rc;
3275 llapi_error(LLAPI_MSG_ERROR, rc, "Can't create pipe\n");
3282 llapi_error(LLAPI_MSG_ERROR, rc, "Can't fork\n");
3287 /* child process redirects its output. */
3290 if (dup2(fd[1], 1) < 0) {
3292 llapi_error(LLAPI_MSG_ERROR, rc,
3293 "Can't dup2 %d\n", fd[1]);
3303 status = rmtacl_notify(ops);
3307 exit(execvp(argv[0], argv));
3310 /* the following is parent process */
3311 fp = fdopen(fd[0], "r");
3314 llapi_error(LLAPI_MSG_ERROR, rc, "fdopen %d failed\n", fd[0]);
3320 while (fgets(buf, PIPE_BUF, fp) != NULL) {
3321 if (output_func(buf) < 0)
3322 fprintf(stderr, "WARNING: unexpected error!\n[%s]\n",
3328 if (waitpid(pid, &status, 0) < 0) {
3330 llapi_error(LLAPI_MSG_ERROR, rc, "waitpid %d failed\n", pid);
3334 return child_status(status);
3337 int llapi_lsetfacl(int argc, char *argv[])
3339 return do_rmtacl(argc, argv, RMT_LSETFACL, NULL);
3342 int llapi_lgetfacl(int argc, char *argv[])
3344 return do_rmtacl(argc, argv, RMT_LGETFACL, NULL);
3347 int llapi_rsetfacl(int argc, char *argv[])
3349 return do_rmtacl(argc, argv, RMT_RSETFACL, NULL);
3352 int llapi_rgetfacl(int argc, char *argv[])
3354 return do_rmtacl(argc, argv, RMT_RGETFACL, rgetfacl_output);
3357 int llapi_cp(int argc, char *argv[])
3361 rc = rmtacl_notify(RMT_RSETFACL);
3365 exit(execvp(argv[0], argv));
3368 int llapi_ls(int argc, char *argv[])
3372 rc = rmtacl_notify(RMT_LGETFACL);
3376 exit(execvp(argv[0], argv));
3379 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
3380 * format must have %s%s, buf must be > 16
3381 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
3382 * then buf = "lustre-MDT0000"
3384 static int get_mdtname(char *name, char *format, char *buf)
3386 char suffix[]="-MDT0000";
3387 int len = strlen(name);
3389 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
3390 name[len - 5] = '\0';
3395 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
3398 /* Not enough room to add suffix */
3399 llapi_err_noerrno(LLAPI_MSG_ERROR,
3400 "MDT name too long |%s|", name);
3405 return sprintf(buf, format, name, suffix);
3408 /** ioctl on filsystem root, with mdtindex sent as data
3409 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
3410 * \param mdtidxp pointer to integer within data to be filled in with the
3411 * mdt index (0 if no mdt is specified). NULL won't be filled.
3413 static int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
3420 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
3421 Open root and parse mdt index. */
3422 if (mdtname[0] == '/') {
3424 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
3425 (char *)mdtname, -1);
3427 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
3429 ptr = fsname + strlen(fsname) - 8;
3431 index = strtol(ptr + 4, NULL, 10);
3432 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
3436 llapi_err_noerrno(LLAPI_MSG_ERROR,
3437 "Can't open %s: %d\n", mdtname, rc);
3444 rc = ioctl(fd, opc, data);
3449 if (rc && want_error)
3450 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d err %d", opc, rc);
3456 /****** Changelog API ********/
3458 static int changelog_ioctl(const char *mdtname, int opc, int id,
3459 long long recno, int flags)
3461 struct ioc_changelog data;
3465 data.icc_recno = recno;
3466 data.icc_flags = flags;
3467 idx = (int *)(&data.icc_mdtindex);
3469 return root_ioctl(mdtname, opc, &data, idx, WANT_ERROR);
3472 #define CHANGELOG_PRIV_MAGIC 0xCA8E1080
3473 struct changelog_private {
3476 lustre_kernelcomm kuc;
3479 /** Start reading from a changelog
3480 * @param priv Opaque private control structure
3481 * @param flags Start flags (e.g. CHANGELOG_FLAG_BLOCK)
3482 * @param device Report changes recorded on this MDT
3483 * @param startrec Report changes beginning with this record number
3484 * (just call llapi_changelog_fini when done; don't need an endrec)
3486 int llapi_changelog_start(void **priv, int flags, const char *device,
3489 struct changelog_private *cp;
3492 /* Set up the receiver control struct */
3493 cp = calloc(1, sizeof(*cp));
3497 cp->magic = CHANGELOG_PRIV_MAGIC;
3500 /* Set up the receiver */
3501 rc = libcfs_ukuc_start(&cp->kuc, 0 /* no group registration */);
3507 /* Tell the kernel to start sending */
3508 rc = changelog_ioctl(device, OBD_IOC_CHANGELOG_SEND, cp->kuc.lk_wfd,
3510 /* Only the kernel reference keeps the write side open */
3511 close(cp->kuc.lk_wfd);
3514 /* frees and clears priv */
3515 llapi_changelog_fini(priv);
3526 /** Finish reading from a changelog */
3527 int llapi_changelog_fini(void **priv)
3529 struct changelog_private *cp = (struct changelog_private *)*priv;
3531 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
3534 libcfs_ukuc_stop(&cp->kuc);
3540 /** Convert a changelog_rec to changelog_ext_rec, in this way client can treat
3541 * all records in the format of changelog_ext_rec, this can make record
3544 static inline int changelog_extend_rec(struct changelog_ext_rec *ext)
3546 if (!CHANGELOG_REC_EXTENDED(ext)) {
3547 struct changelog_rec *rec = (struct changelog_rec *)ext;
3549 memmove(ext->cr_name, rec->cr_name, rec->cr_namelen);
3550 fid_zero(&ext->cr_sfid);
3551 fid_zero(&ext->cr_spfid);
3558 /** Read the next changelog entry
3559 * @param priv Opaque private control structure
3560 * @param rech Changelog record handle; record will be allocated here
3561 * @return 0 valid message received; rec is set
3565 int llapi_changelog_recv(void *priv, struct changelog_ext_rec **rech)
3567 struct changelog_private *cp = (struct changelog_private *)priv;
3568 struct kuc_hdr *kuch;
3571 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
3575 kuch = malloc(CR_MAXSIZE + sizeof(*kuch));
3580 rc = libcfs_ukuc_msg_get(&cp->kuc, (char *)kuch,
3581 CR_MAXSIZE + sizeof(*kuch),
3582 KUC_TRANSPORT_CHANGELOG);
3586 if ((kuch->kuc_transport != KUC_TRANSPORT_CHANGELOG) ||
3587 ((kuch->kuc_msgtype != CL_RECORD) &&
3588 (kuch->kuc_msgtype != CL_EOF))) {
3589 llapi_err_noerrno(LLAPI_MSG_ERROR,
3590 "Unknown changelog message type %d:%d\n",
3591 kuch->kuc_transport, kuch->kuc_msgtype);
3596 if (kuch->kuc_msgtype == CL_EOF) {
3597 if (cp->flags & CHANGELOG_FLAG_FOLLOW) {
3606 /* Our message is a changelog_ext_rec. Use pointer math to skip
3607 * kuch_hdr and point directly to the message payload.
3609 *rech = (struct changelog_ext_rec *)(kuch + 1);
3610 changelog_extend_rec(*rech);
3620 /** Release the changelog record when done with it. */
3621 int llapi_changelog_free(struct changelog_ext_rec **rech)
3624 /* We allocated memory starting at the kuc_hdr, but passed
3625 * the consumer a pointer to the payload.
3626 * Use pointer math to get back to the header.
3628 struct kuc_hdr *kuch = (struct kuc_hdr *)*rech - 1;
3635 int llapi_changelog_clear(const char *mdtname, const char *idstr,
3641 llapi_err_noerrno(LLAPI_MSG_ERROR,
3642 "can't purge negative records\n");
3646 id = strtol(idstr + strlen(CHANGELOG_USER_PREFIX), NULL, 10);
3647 if ((id == 0) || (strncmp(idstr, CHANGELOG_USER_PREFIX,
3648 strlen(CHANGELOG_USER_PREFIX)) != 0)) {
3649 llapi_err_noerrno(LLAPI_MSG_ERROR,
3650 "expecting id of the form '"
3651 CHANGELOG_USER_PREFIX
3652 "<num>'; got '%s'\n", idstr);
3656 return changelog_ioctl(mdtname, OBD_IOC_CHANGELOG_CLEAR, id, endrec, 0);
3659 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
3660 int buflen, long long *recno, int *linkno)
3663 struct getinfo_fid2path *gf;
3666 while (*fidstr == '[')
3669 sscanf(fidstr, SFID, RFID(&fid));
3670 if (!fid_is_sane(&fid)) {
3671 llapi_err_noerrno(LLAPI_MSG_ERROR,
3672 "bad FID format [%s], should be "DFID"\n",
3673 fidstr, (__u64)1, 2, 0);
3677 gf = malloc(sizeof(*gf) + buflen);
3681 gf->gf_recno = *recno;
3682 gf->gf_linkno = *linkno;
3683 gf->gf_pathlen = buflen;
3685 /* Take path or fsname */
3686 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
3689 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl err %d", rc);
3691 memcpy(buf, gf->gf_path, gf->gf_pathlen);
3692 *recno = gf->gf_recno;
3693 *linkno = gf->gf_linkno;
3700 static int path2fid_from_lma(const char *path, lustre_fid *fid)
3703 struct lustre_mdt_attrs *lma;
3706 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
3709 lma = (struct lustre_mdt_attrs *)buf;
3710 fid_le_to_cpu(fid, &lma->lma_self_fid);
3714 int llapi_path2fid(const char *path, lustre_fid *fid)
3718 memset(fid, 0, sizeof(*fid));
3719 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
3721 if (errno == ELOOP || errno == ENXIO)
3722 return path2fid_from_lma(path, fid);
3726 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
3727 if (rc == -EINVAL || rc == -ENOTTY)
3728 rc = path2fid_from_lma(path, fid);
3734 /****** HSM Copytool API ********/
3735 #define CT_PRIV_MAGIC 0xC0BE2001
3736 struct copytool_private {
3739 lustre_kernelcomm kuc;
3743 #include <libcfs/libcfs.h>
3745 /** Register a copytool
3746 * @param[out] priv Opaque private control structure
3747 * @param fsname Lustre filesystem
3748 * @param flags Open flags, currently unused (e.g. O_NONBLOCK)
3749 * @param archive_count
3750 * @param archives Which archive numbers this copytool is responsible for
3752 int llapi_copytool_start(void **priv, char *fsname, int flags,
3753 int archive_count, int *archives)
3755 struct copytool_private *ct;
3758 if (archive_count > 0 && archives == NULL) {
3759 llapi_err_noerrno(LLAPI_MSG_ERROR,
3760 "NULL archive numbers");
3764 ct = calloc(1, sizeof(*ct));
3768 ct->fsname = malloc(strlen(fsname) + 1);
3769 if (ct->fsname == NULL) {
3773 strcpy(ct->fsname, fsname);
3774 ct->magic = CT_PRIV_MAGIC;
3776 for (rc = 0; rc < archive_count; rc++) {
3777 if (archives[rc] > sizeof(ct->archives)) {
3778 llapi_err_noerrno(LLAPI_MSG_ERROR,
3779 "Maximum of %d archives supported",
3780 sizeof(ct->archives));
3783 ct->archives |= 1 << archives[rc];
3785 /* special case: if no archives specified, default to archive #0. */
3786 if (ct->archives == 0)
3789 rc = libcfs_ukuc_start(&ct->kuc, KUC_GRP_HSM);
3793 /* Storing archive(s) in lk_data; see mdc_ioc_hsm_ct_start */
3794 ct->kuc.lk_data = ct->archives;
3795 rc = root_ioctl(ct->fsname, LL_IOC_HSM_CT_START, &(ct->kuc), NULL,
3797 /* Only the kernel reference keeps the write side open */
3798 close(ct->kuc.lk_wfd);
3813 /** Deregister a copytool */
3814 int llapi_copytool_fini(void **priv)
3816 struct copytool_private *ct = (struct copytool_private *)*priv;
3818 if (!ct || (ct->magic != CT_PRIV_MAGIC))
3821 /* Tell the kernel to stop sending us messages */
3822 ct->kuc.lk_flags = LK_FLG_STOP;
3823 root_ioctl(ct->fsname, LL_IOC_HSM_CT_START, &(ct->kuc), NULL, 0);
3825 /* Shut down the kernelcomms */
3826 libcfs_ukuc_stop(&ct->kuc);
3834 /** Wait for the next hsm_action_list
3835 * @param priv Opaque private control structure
3836 * @param halh Action list handle, will be allocated here
3837 * @param msgsize Number of bytes in the message, will be set here
3838 * @return 0 valid message received; halh and msgsize are set
3841 int llapi_copytool_recv(void *priv, struct hsm_action_list **halh, int *msgsize)
3843 struct copytool_private *ct = (struct copytool_private *)priv;
3844 struct kuc_hdr *kuch;
3845 struct hsm_action_list *hal;
3848 if (!ct || (ct->magic != CT_PRIV_MAGIC))
3850 if (halh == NULL || msgsize == NULL)
3853 kuch = malloc(HAL_MAXSIZE + sizeof(*kuch));
3857 rc = libcfs_ukuc_msg_get(&ct->kuc, (char *)kuch,
3858 HAL_MAXSIZE + sizeof(*kuch),
3863 /* Handle generic messages */
3864 if (kuch->kuc_transport == KUC_TRANSPORT_GENERIC &&
3865 kuch->kuc_msgtype == KUC_MSG_SHUTDOWN) {
3870 if (kuch->kuc_transport != KUC_TRANSPORT_HSM ||
3871 kuch->kuc_msgtype != HMT_ACTION_LIST) {
3872 llapi_err_noerrno(LLAPI_MSG_ERROR,
3873 "Unknown HSM message type %d:%d\n",
3874 kuch->kuc_transport, kuch->kuc_msgtype);
3879 /* Our message is a hsm_action_list. Use pointer math to skip
3880 * kuch_hdr and point directly to the message payload.
3882 hal = (struct hsm_action_list *)(kuch + 1);
3884 /* Check that we have registered for this archive # */
3885 if (((1 << hal->hal_archive_num) & ct->archives) == 0) {
3886 llapi_err_noerrno(LLAPI_MSG_INFO,
3887 "Ignoring request for archive #%d (bitmask %#x)\n",
3888 hal->hal_archive_num, ct->archives);
3894 *msgsize = kuch->kuc_msglen - sizeof(*kuch);
3904 /** Release the action list when done with it. */
3905 int llapi_copytool_free(struct hsm_action_list **hal)
3907 /* Reuse the llapi_changelog_free function */
3908 return llapi_changelog_free((struct changelog_ext_rec **)hal);
3911 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
3916 root = opendir(mnt);
3919 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3923 rc = ioctl(dirfd(root), LL_IOC_GET_CONNECT_FLAGS, flags);
3926 llapi_error(LLAPI_MSG_ERROR, rc,
3927 "ioctl on %s for getting connect flags failed", mnt);
3933 int llapi_get_version(char *buffer, int buffer_size,
3938 struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
3940 fd = open(OBD_DEV_PATH, O_RDONLY);
3944 memset(buffer, 0, buffer_size);
3945 data->ioc_version = OBD_IOCTL_VERSION;
3946 data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
3947 data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
3948 data->ioc_len = obd_ioctl_packlen(data);
3950 rc = ioctl(fd, OBD_GET_VERSION, buffer);
3957 *version = data->ioc_bulk;
3962 * Get a 64-bit value representing the version of file data pointed by fd.
3964 * Each write or truncate, flushed on OST, will change this value. You can use
3965 * this value to verify if file data was modified. This only checks the file
3966 * data, not metadata.
3968 * \param flags If set to LL_DV_NOFLUSH, the data version will be read
3969 * directly from OST without regard to possible dirty cache on
3972 * \retval 0 on success.
3973 * \retval -errno on error.
3975 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
3978 struct ioc_data_version idv;
3980 idv.idv_flags = flags;
3982 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
3986 *data_version = idv.idv_version;