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, 2013, Intel Corporation.
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 #include <libgen.h> /* for dirname() */
65 #ifdef HAVE_LINUX_UNISTD_H
66 #include <linux/unistd.h>
72 #include <liblustre.h>
73 #include <lnet/lnetctl.h>
76 #include <lustre/lustreapi.h>
77 #include "lustreapi_internal.h"
79 static unsigned llapi_dir_filetype_table[] = {
88 #if defined(DT_DOOR) && defined(S_IFDOOR)
93 #if defined(DT_DOOR) && defined(S_IFDOOR)
94 static const int DT_MAX = DT_DOOR;
96 static const int DT_MAX = DT_SOCK;
99 static unsigned llapi_filetype_dir_table[] = {
108 #if defined(DT_DOOR) && defined(S_IFDOOR)
113 #if defined(DT_DOOR) && defined(S_IFDOOR)
114 static const int S_IFMAX = DT_DOOR;
116 static const int S_IFMAX = DT_SOCK;
119 /* liblustreapi message level */
120 static int llapi_msg_level = LLAPI_MSG_MAX;
122 void llapi_msg_set_level(int level)
124 /* ensure level is in the good range */
125 if (level < LLAPI_MSG_OFF)
126 llapi_msg_level = LLAPI_MSG_OFF;
127 else if (level > LLAPI_MSG_MAX)
128 llapi_msg_level = LLAPI_MSG_MAX;
130 llapi_msg_level = level;
133 static void error_callback_default(enum llapi_message_level level, int err,
134 const char *fmt, va_list ap)
136 vfprintf(stderr, fmt, ap);
137 if (level & LLAPI_MSG_NO_ERRNO)
138 fprintf(stderr, "\n");
140 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
143 static void info_callback_default(enum llapi_message_level level, int err,
144 const char *fmt, va_list ap)
146 vfprintf(stdout, fmt, ap);
149 static llapi_log_callback_t llapi_error_callback = error_callback_default;
150 static llapi_log_callback_t llapi_info_callback = info_callback_default;
153 /* llapi_error will preserve errno */
154 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
157 int tmp_errno = errno;
159 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
163 llapi_error_callback(level, abs(err), fmt, args);
168 /* llapi_printf will preserve errno */
169 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
172 int tmp_errno = errno;
174 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
178 llapi_info_callback(level, 0, fmt, args);
184 * Set a custom error logging function. Passing in NULL will reset the logging
185 * callback to its default value.
187 * This function returns the value of the old callback.
189 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
191 llapi_log_callback_t old = llapi_error_callback;
194 llapi_error_callback = cb;
196 llapi_error_callback = error_callback_default;
202 * Set a custom info logging function. Passing in NULL will reset the logging
203 * callback to its default value.
205 * This function returns the value of the old callback.
207 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
209 llapi_log_callback_t old = llapi_info_callback;
212 llapi_info_callback = cb;
214 llapi_info_callback = info_callback_default;
220 * size_units is to be initialized (or zeroed) by caller.
222 int llapi_parse_size(const char *optarg, unsigned long long *size,
223 unsigned long long *size_units, int bytes_spec)
227 if (strncmp(optarg, "-", 1) == 0)
230 if (*size_units == 0)
233 *size = strtoull(optarg, &end, 0);
236 if ((*end == 'b') && *(end + 1) == '\0' &&
237 (*size & (~0ULL << (64 - 9))) == 0 &&
239 *size_units = 1 << 9;
240 } else if ((*end == 'b') &&
241 *(end + 1) == '\0' &&
244 } else if ((*end == 'k' || *end == 'K') &&
245 *(end + 1) == '\0' &&
246 (*size & (~0ULL << (64 - 10))) == 0) {
247 *size_units = 1 << 10;
248 } else if ((*end == 'm' || *end == 'M') &&
249 *(end + 1) == '\0' &&
250 (*size & (~0ULL << (64 - 20))) == 0) {
251 *size_units = 1 << 20;
252 } else if ((*end == 'g' || *end == 'G') &&
253 *(end + 1) == '\0' &&
254 (*size & (~0ULL << (64 - 30))) == 0) {
255 *size_units = 1 << 30;
256 } else if ((*end == 't' || *end == 'T') &&
257 *(end + 1) == '\0' &&
258 (*size & (~0ULL << (64 - 40))) == 0) {
259 *size_units = 1ULL << 40;
260 } else if ((*end == 'p' || *end == 'P') &&
261 *(end + 1) == '\0' &&
262 (*size & (~0ULL << (64 - 50))) == 0) {
263 *size_units = 1ULL << 50;
264 } else if ((*end == 'e' || *end == 'E') &&
265 *(end + 1) == '\0' &&
266 (*size & (~0ULL << (64 - 60))) == 0) {
267 *size_units = 1ULL << 60;
272 *size *= *size_units;
276 /* XXX: llapi_xxx() functions return negative values upon failure */
278 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
279 int stripe_count, int stripe_pattern)
283 /* 64 KB is the largest common page size I'm aware of (on ia64), but
284 * check the local page size just in case. */
285 page_size = LOV_MIN_STRIPE_SIZE;
286 if (getpagesize() > page_size) {
287 page_size = getpagesize();
288 llapi_err_noerrno(LLAPI_MSG_WARN,
289 "warning: your page size (%u) is "
290 "larger than expected (%u)", page_size,
291 LOV_MIN_STRIPE_SIZE);
293 if ((stripe_size & (LOV_MIN_STRIPE_SIZE - 1))) {
295 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
296 "must be an even multiple of %d bytes",
297 stripe_size, page_size);
300 if (stripe_offset < -1 || stripe_offset > MAX_OBD_DEVICES) {
302 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
306 if (stripe_count < -1 || stripe_count > LOV_MAX_STRIPE_COUNT) {
308 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
312 if (stripe_size >= (1ULL << 32)) {
314 llapi_error(LLAPI_MSG_ERROR, rc,
315 "warning: stripe size 4G or larger "
316 "is not currently supported and would wrap");
322 /* return the first file matching this pattern */
323 static int first_match(char *pattern, char *buffer)
327 if (glob(pattern, GLOB_BRACE, NULL, &glob_info))
330 if (glob_info.gl_pathc < 1) {
331 globfree(&glob_info);
335 strcpy(buffer, glob_info.gl_pathv[0]);
337 globfree(&glob_info);
341 static int find_target_obdpath(char *fsname, char *path)
344 char pattern[PATH_MAX + 1];
347 snprintf(pattern, PATH_MAX,
348 "/proc/fs/lustre/lov/%s-*/target_obd",
350 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
351 if (rc == GLOB_NOMATCH)
356 strcpy(path, glob_info.gl_pathv[0]);
357 globfree(&glob_info);
361 static int find_poolpath(char *fsname, char *poolname, char *poolpath)
364 char pattern[PATH_MAX + 1];
367 snprintf(pattern, PATH_MAX,
368 "/proc/fs/lustre/lov/%s-*/pools/%s",
370 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
371 /* If no pools, make sure the lov is available */
372 if ((rc == GLOB_NOMATCH) &&
373 (find_target_obdpath(fsname, poolpath) == -ENODEV))
378 strcpy(poolpath, glob_info.gl_pathv[0]);
379 globfree(&glob_info);
384 * return a parameter string for a specific device type or mountpoint
386 * \param param_path the path to the file containing parameter data
387 * \param result buffer for parameter value string
388 * \param result_size size of buffer for return value
390 * The \param param_path is appended to /proc/{fs,sys}/{lnet,lustre} to
391 * complete the absolute path to the file containing the parameter data
392 * the user is requesting. If that file exist then the data is read from
393 * the file and placed into the \param result buffer that is passed by
394 * the user. Data is only copied up to the \param result_size to prevent
395 * overflow of the array.
397 * Return 0 for success, with a NUL-terminated string in \param result.
398 * Return -ve value for error.
400 static int get_param(const char *param_path, char *result,
401 unsigned int result_size)
403 char file[PATH_MAX + 1], pattern[PATH_MAX + 1], buf[result_size];
407 snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
409 rc = first_match(pattern, file);
413 fp = fopen(file, "r");
415 while (fgets(buf, result_size, fp) != NULL)
424 #define DEVICES_LIST "/proc/fs/lustre/devices"
427 * return a parameter string for a specific device type or mountpoint
429 * \param fsname Lustre filesystem name (optional)
430 * \param file_path path to file in filesystem (optional, if fsname unset)
431 * \param obd_type Lustre OBD device type
432 * \param param_name parameter name to fetch
433 * \param value return buffer for parameter value string
434 * \param val_len size of buffer for return value
436 * If fsname is specified then the parameter will be from that filesystem
437 * (if it exists). If file_path is given and it is in a mounted Lustre
438 * filesystem, then the parameter will be otherwise the value may be
439 * from any mounted filesystem (if there is more than one).
441 * If "obd_type" matches a Lustre device then the first matching device
442 * (as with "lctl dl", constrained by \param fsname or \param mount_path)
443 * will be used to provide the return value, otherwise the first such
444 * device found will be used.
446 * Return 0 for success, with a NUL-terminated string in \param buffer.
447 * Return -ve value for error.
449 static int get_param_obdvar(const char *fsname, const char *file_path,
450 const char *obd_type, const char *param_name,
451 char *value, unsigned int val_len)
453 char devices[PATH_MAX + 1], dev[PATH_MAX + 1] = "*", fs[PATH_MAX + 1];
454 FILE *fp = fopen(DEVICES_LIST, "r");
457 if (!fsname && file_path) {
458 rc = llapi_search_fsname(file_path, fs);
460 llapi_error(LLAPI_MSG_ERROR, rc,
461 "'%s' is not on a Lustre filesystem",
468 if (strlen(fsname) > sizeof(fs)-1) {
473 strncpy(fs, fsname, sizeof(fs));
478 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
482 while (fgets(devices, sizeof(devices), fp) != NULL) {
483 char *bufp = devices, *tmp;
485 while (bufp[0] == ' ')
488 tmp = strstr(bufp, obd_type);
490 tmp += strlen(obd_type) + 1;
493 if (strlen(tmp) > sizeof(dev)-1) {
497 strncpy(dev, tmp, sizeof(dev));
498 tmp = strchr(dev, ' ');
505 if (dev[0] == '*' && strlen(fs))
506 snprintf(dev, PATH_MAX, "%s-*", fs);
507 snprintf(devices, PATH_MAX, "%s/%s/%s", obd_type, dev, param_name);
509 return get_param(devices, value, val_len);
513 * TYPE one of llite, lmv, lov.
514 * /proc/fs/lustre/TYPE/INST the directory of interest.
516 static int get_param_cli(const char *type, const char *inst,
517 const char *param, char *buf, size_t buf_size)
519 char param_path[PATH_MAX + 1];
520 FILE *param_file = NULL;
523 snprintf(param_path, sizeof(param_path),
524 "/proc/fs/lustre/%s/%s/%s", type, inst, param);
526 param_file = fopen(param_path, "r");
527 if (param_file == NULL) {
532 if (fgets(buf, buf_size, param_file) == NULL) {
539 if (param_file != NULL)
545 static int get_param_llite(const char *path,
546 const char *param, char *buf, size_t buf_size)
551 rc = llapi_getname(path, inst, sizeof(inst));
555 return get_param_cli("llite", inst, param, buf, buf_size);
558 static int get_param_lov(const char *path,
559 const char *param, char *buf, size_t buf_size)
561 struct obd_uuid uuid;
564 rc = llapi_file_get_lov_uuid(path, &uuid);
568 return get_param_cli("lov", uuid.uuid, param, buf, buf_size);
571 static int get_param_lmv(const char *path,
572 const char *param, char *buf, size_t buf_size)
574 struct obd_uuid uuid;
577 rc = llapi_file_get_lmv_uuid(path, &uuid);
581 return get_param_cli("lmv", uuid.uuid, param, buf, buf_size);
584 static int get_mds_md_size(const char *path)
586 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
590 /* Get the max ea size from llite proc. */
591 rc = get_param_llite(path, "max_easize", buf, sizeof(buf));
604 * if pool is NULL, search ostname in target_obd
605 * if pool is not NULL:
606 * if pool not found returns errno < 0
607 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
608 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
610 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
613 char buffer[PATH_MAX + 1];
617 len = strlen(ostname);
619 if (poolname == NULL) {
623 rc = find_target_obdpath(fsname, buffer);
625 rc = find_poolpath(fsname, poolname, buffer);
630 fd = fopen(buffer, "r");
634 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
635 if (poolname == NULL) {
637 /* Search for an ostname in the list of OSTs
638 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
639 ptr = strchr(buffer, ' ');
641 (strncmp(ptr + 1, ostname, len) == 0)) {
646 /* Search for an ostname in a pool,
647 (or an existing non-empty pool if no ostname) */
648 if ((ostname == NULL) ||
649 (strncmp(buffer, ostname, len) == 0)) {
659 int llapi_file_open_pool(const char *name, int flags, int mode,
660 unsigned long long stripe_size, int stripe_offset,
661 int stripe_count, int stripe_pattern, char *pool_name)
663 struct lov_user_md_v3 lum = { 0 };
667 /* Make sure we have a good pool */
668 if (pool_name != NULL) {
669 char fsname[MAX_OBD_NAME + 1], *ptr;
671 rc = llapi_search_fsname(name, fsname);
673 llapi_error(LLAPI_MSG_ERROR, rc,
674 "'%s' is not on a Lustre filesystem",
679 /* in case user gives the full pool name <fsname>.<poolname>,
680 * strip the fsname */
681 ptr = strchr(pool_name, '.');
684 if (strcmp(pool_name, fsname) != 0) {
686 llapi_err_noerrno(LLAPI_MSG_ERROR,
687 "Pool '%s' is not on filesystem '%s'",
694 /* Make sure the pool exists and is non-empty */
695 rc = llapi_search_ost(fsname, pool_name, NULL);
697 llapi_err_noerrno(LLAPI_MSG_ERROR,
698 "pool '%s.%s' %s", fsname, pool_name,
699 rc == 0 ? "has no OSTs" : "does not exist");
704 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
705 if (fd < 0 && errno == EISDIR) {
706 fd = open(name, O_DIRECTORY | O_RDONLY);
712 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
716 rc = llapi_stripe_limit_check(stripe_size, stripe_offset, stripe_count,
721 /* Initialize IOCTL striping pattern structure */
722 lum.lmm_magic = LOV_USER_MAGIC_V3;
723 lum.lmm_pattern = stripe_pattern;
724 lum.lmm_stripe_size = stripe_size;
725 lum.lmm_stripe_count = stripe_count;
726 lum.lmm_stripe_offset = stripe_offset;
727 if (pool_name != NULL) {
728 strncpy(lum.lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
730 /* If no pool is specified at all, use V1 request */
731 lum.lmm_magic = LOV_USER_MAGIC_V1;
734 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum)) {
735 char *errmsg = "stripe already set";
737 if (errno != EEXIST && errno != EALREADY)
738 errmsg = strerror(errno);
740 llapi_err_noerrno(LLAPI_MSG_ERROR,
741 "error on ioctl "LPX64" for '%s' (%d): %s",
742 (__u64)LL_IOC_LOV_SETSTRIPE, name, fd,errmsg);
753 int llapi_file_open(const char *name, int flags, int mode,
754 unsigned long long stripe_size, int stripe_offset,
755 int stripe_count, int stripe_pattern)
757 return llapi_file_open_pool(name, flags, mode, stripe_size,
758 stripe_offset, stripe_count,
759 stripe_pattern, NULL);
762 int llapi_file_create(const char *name, unsigned long long stripe_size,
763 int stripe_offset, int stripe_count, int stripe_pattern)
767 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
768 stripe_offset, stripe_count, stripe_pattern,
777 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
778 int stripe_offset, int stripe_count,
779 int stripe_pattern, char *pool_name)
783 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
784 stripe_offset, stripe_count, stripe_pattern,
794 * In DNE phase I, only stripe_offset will be used in this function.
795 * stripe_count, stripe_pattern and pool_name will be supported later.
797 int llapi_dir_create_pool(const char *name, int flags, int stripe_offset,
798 int stripe_count, int stripe_pattern, char *pool_name)
800 struct lmv_user_md lmu = { 0 };
801 struct obd_ioctl_data data = { 0 };
804 char *dirpath = NULL;
805 char *namepath = NULL;
811 dirpath = strdup(name);
812 namepath = strdup(name);
813 if (!dirpath || !namepath)
816 lmu.lum_magic = LMV_USER_MAGIC;
817 lmu.lum_stripe_offset = stripe_offset;
818 lmu.lum_stripe_count = stripe_count;
819 lmu.lum_hash_type = stripe_pattern;
820 if (pool_name != NULL) {
821 if (strlen(pool_name) >= LOV_MAXPOOLNAME) {
822 llapi_err_noerrno(LLAPI_MSG_ERROR,
823 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
824 "pool name: %s", name, pool_name);
828 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
831 filename = basename(namepath);
832 lmu.lum_type = LMV_STRIPE_TYPE;
833 dir = dirname(dirpath);
835 data.ioc_inlbuf1 = (char *)filename;
836 data.ioc_inllen1 = strlen(filename) + 1;
837 data.ioc_inlbuf2 = (char *)&lmu;
838 data.ioc_inllen2 = sizeof(struct lmv_user_md);
839 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
841 llapi_error(LLAPI_MSG_ERROR, rc,
842 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
847 fd = open(dir, O_DIRECTORY | O_RDONLY);
850 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
854 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
855 char *errmsg = "stripe already set";
857 if (errno != EEXIST && errno != EALREADY)
858 errmsg = strerror(errno);
860 llapi_err_noerrno(LLAPI_MSG_ERROR,
861 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
871 int llapi_direntry_remove(char *dname)
873 char *dirpath = NULL;
874 char *namepath = NULL;
880 dirpath = strdup(dname);
881 namepath = strdup(dname);
882 if (!dirpath || !namepath)
885 filename = basename(namepath);
887 dir = dirname(dirpath);
889 fd = open(dir, O_DIRECTORY | O_RDONLY);
892 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
897 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
898 char *errmsg = strerror(errno);
899 llapi_err_noerrno(LLAPI_MSG_ERROR,
900 "error on ioctl "LPX64" for '%s' (%d): %s",
901 (__u64)LL_IOC_LMV_SETSTRIPE, filename,
913 * Find the fsname, the full path, and/or an open fd.
914 * Either the fsname or path must not be NULL
916 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
919 char buf[PATH_MAX], mntdir[PATH_MAX];
922 int idx = 0, len = 0, mntlen, fd;
925 /* get the mount point */
926 fp = setmntent(MOUNTED, "r");
929 llapi_error(LLAPI_MSG_ERROR, rc,
930 "setmntent(%s) failed", MOUNTED);
934 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
937 if (!llapi_is_lustre_mnt(&mnt))
940 if ((want & WANT_INDEX) && (idx++ != index))
943 mntlen = strlen(mnt.mnt_dir);
944 ptr = strrchr(mnt.mnt_fsname, '/');
945 /* thanks to the call to llapi_is_lustre_mnt() above,
946 * we are sure that mnt.mnt_fsname contains ":/",
947 * so ptr should never be NULL */
952 /* Check the fsname for a match, if given */
953 if (!(want & WANT_FSNAME) && fsname != NULL &&
954 (strlen(fsname) > 0) && (strcmp(ptr, fsname) != 0))
957 /* If the path isn't set return the first one we find */
958 if (path == NULL || strlen(path) == 0) {
959 strcpy(mntdir, mnt.mnt_dir);
960 if ((want & WANT_FSNAME) && fsname != NULL)
964 /* Otherwise find the longest matching path */
965 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
966 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
967 strcpy(mntdir, mnt.mnt_dir);
969 if ((want & WANT_FSNAME) && fsname != NULL)
978 if ((want & WANT_PATH) && path != NULL)
979 strcpy(path, mntdir);
980 if (want & WANT_FD) {
981 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
984 llapi_error(LLAPI_MSG_ERROR, rc,
985 "error opening '%s'", mntdir);
991 } else if (want & WANT_ERROR)
992 llapi_err_noerrno(LLAPI_MSG_ERROR,
993 "can't find fs root for '%s': %d",
994 (want & WANT_PATH) ? fsname : path, rc);
999 * search lustre mounts
1001 * Calling this function will return to the user the mount point, mntdir, and
1002 * the file system name, fsname, if the user passed a buffer to this routine.
1004 * The user inputs are pathname and index. If the pathname is supplied then
1005 * the value of the index will be ignored. The pathname will return data if
1006 * the pathname is located on a lustre mount. Index is used to pick which
1007 * mount point you want in the case of multiple mounted lustre file systems.
1008 * See function lfs_osts in lfs.c for a example of the index use.
1010 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1013 int want = WANT_PATH, idx = -1;
1015 if (!pathname || pathname[0] == '\0') {
1019 strcpy(mntdir, pathname);
1022 want |= WANT_FSNAME;
1023 return get_root_path(want, fsname, NULL, mntdir, idx);
1026 /* Given a path, find the corresponding Lustre fsname */
1027 int llapi_search_fsname(const char *pathname, char *fsname)
1032 path = realpath(pathname, NULL);
1034 char buf[PATH_MAX + 1], *ptr;
1037 if (pathname[0] != '/') {
1038 /* Need an absolute path, but realpath() only works for
1039 * pathnames that actually exist. We go through the
1040 * extra hurdle of dirname(getcwd() + pathname) in
1041 * case the relative pathname contains ".." in it. */
1042 if (getcwd(buf, sizeof(buf) - 1) == NULL)
1046 strncat(buf, pathname, sizeof(buf) - strlen(buf));
1047 path = realpath(buf, NULL);
1049 ptr = strrchr(buf, '/');
1053 path = realpath(buf, NULL);
1056 llapi_error(LLAPI_MSG_ERROR, rc,
1057 "pathname '%s' cannot expand",
1063 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1068 int llapi_search_rootpath(char *pathname, const char *fsname)
1070 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1073 int llapi_getname(const char *path, char *buf, size_t size)
1075 struct obd_uuid uuid_buf;
1076 char *uuid = uuid_buf.uuid;
1079 memset(&uuid_buf, 0, sizeof(uuid_buf));
1080 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1084 /* We want to turn lustre-clilov-ffff88002738bc00 into
1085 * lustre-ffff88002738bc00. */
1087 nr = snprintf(buf, size, "%.*s-%s",
1088 (int) (strlen(uuid) - 24), uuid,
1089 uuid + strlen(uuid) - 16);
1099 * find the pool directory path under /proc
1100 * (can be also used to test if a fsname is known)
1102 static int poolpath(char *fsname, char *pathname, char *pool_pathname)
1105 char pattern[PATH_MAX + 1];
1106 char buffer[PATH_MAX];
1108 if (fsname == NULL) {
1109 rc = llapi_search_fsname(pathname, buffer);
1113 strcpy(pathname, fsname);
1116 snprintf(pattern, PATH_MAX, "/proc/fs/lustre/lov/%s-*/pools", fsname);
1117 rc = first_match(pattern, buffer);
1121 /* in fsname test mode, pool_pathname is NULL */
1122 if (pool_pathname != NULL)
1123 strcpy(pool_pathname, buffer);
1129 * Get the list of pool members.
1130 * \param poolname string of format \<fsname\>.\<poolname\>
1131 * \param members caller-allocated array of char*
1132 * \param list_size size of the members array
1133 * \param buffer caller-allocated buffer for storing OST names
1134 * \param buffer_size size of the buffer
1136 * \return number of members retrieved for this pool
1137 * \retval -error failure
1139 int llapi_get_poolmembers(const char *poolname, char **members,
1140 int list_size, char *buffer, int buffer_size)
1142 char fsname[PATH_MAX + 1];
1144 char pathname[PATH_MAX + 1];
1145 char path[PATH_MAX + 1];
1152 /* name is FSNAME.POOLNAME */
1153 if (strlen(poolname) > PATH_MAX)
1155 strcpy(fsname, poolname);
1156 pool = strchr(fsname, '.');
1163 rc = poolpath(fsname, NULL, pathname);
1165 llapi_error(LLAPI_MSG_ERROR, rc,
1166 "Lustre filesystem '%s' not found",
1171 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1172 sprintf(path, "%s/%s", pathname, pool);
1173 fd = fopen(path, "r");
1176 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open %s", path);
1181 while (fgets(buf, sizeof(buf), fd) != NULL) {
1182 if (nb_entries >= list_size) {
1187 tmp = strchr(buf, '\n');
1190 if (used + strlen(buf) + 1 > buffer_size) {
1195 strcpy(buffer + used, buf);
1196 members[nb_entries] = buffer + used;
1197 used += strlen(buf) + 1;
1207 * Get the list of pools in a filesystem.
1208 * \param name filesystem name or path
1209 * \param poollist caller-allocated array of char*
1210 * \param list_size size of the poollist array
1211 * \param buffer caller-allocated buffer for storing pool names
1212 * \param buffer_size size of the buffer
1214 * \return number of pools retrieved for this filesystem
1215 * \retval -error failure
1217 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1218 char *buffer, int buffer_size)
1220 char fsname[PATH_MAX + 1], rname[PATH_MAX + 1], pathname[PATH_MAX + 1];
1224 struct dirent *cookie = NULL;
1226 unsigned int nb_entries = 0;
1227 unsigned int used = 0;
1230 /* initilize output array */
1231 for (i = 0; i < list_size; i++)
1234 /* is name a pathname ? */
1235 ptr = strchr(name, '/');
1237 /* only absolute pathname is supported */
1241 if (!realpath(name, rname)) {
1243 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1248 rc = poolpath(NULL, rname, pathname);
1250 llapi_error(LLAPI_MSG_ERROR, rc, "'%s' is not"
1251 " a Lustre filesystem", name);
1254 if (strlen(rname) > sizeof(fsname)-1)
1256 strncpy(fsname, rname, sizeof(fsname));
1258 /* name is FSNAME */
1259 if (strlen(name) > sizeof(fsname)-1)
1261 strncpy(fsname, name, sizeof(fsname));
1262 rc = poolpath(fsname, NULL, pathname);
1265 llapi_error(LLAPI_MSG_ERROR, rc,
1266 "Lustre filesystem '%s' not found", name);
1270 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1271 dir = opendir(pathname);
1274 llapi_error(LLAPI_MSG_ERROR, rc,
1275 "Could not open pool list for '%s'",
1281 rc = readdir_r(dir, &pool, &cookie);
1285 llapi_error(LLAPI_MSG_ERROR, rc,
1286 "Error reading pool list for '%s'", name);
1288 } else if ((rc == 0) && (cookie == NULL)) {
1289 /* end of directory */
1293 /* ignore . and .. */
1294 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1297 /* check output bounds */
1298 if (nb_entries >= list_size) {
1303 /* +2 for '.' and final '\0' */
1304 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1310 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1311 poollist[nb_entries] = buffer + used;
1312 used += strlen(pool.d_name) + strlen(fsname) + 2;
1318 return ((rc != 0) ? rc : nb_entries);
1321 /* wrapper for lfs.c and obd.c */
1322 int llapi_poollist(const char *name)
1324 /* list of pool names (assume that pool count is smaller
1326 char **list, *buffer = NULL, *path = NULL, *fsname = NULL;
1327 int obdcount, bufsize, rc, nb, i;
1328 char *poolname = NULL, *tmp = NULL, data[16];
1330 if (name[0] != '/') {
1331 fsname = strdup(name);
1332 poolname = strchr(fsname, '.');
1336 path = (char *) name;
1339 rc = get_param_obdvar(fsname, path, "lov", "numobd",
1340 data, sizeof(data));
1343 obdcount = atoi(data);
1345 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1346 * and also an array to store the pointers for all that
1347 * allocated space. */
1349 bufsize = sizeof(struct obd_uuid) * obdcount;
1350 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1351 if (buffer == NULL) {
1355 list = (char **) (buffer + bufsize);
1358 /* name is a path or fsname */
1359 nb = llapi_get_poollist(name, list, obdcount,
1362 /* name is a pool name (<fsname>.<poolname>) */
1363 nb = llapi_get_poolmembers(name, list, obdcount,
1367 if (nb == -EOVERFLOW) {
1370 goto retry_get_pools;
1373 for (i = 0; i < nb; i++)
1374 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1375 rc = (nb < 0 ? nb : 0);
1384 typedef int (semantic_func_t)(char *path, DIR *parent, DIR *d,
1385 void *data, struct dirent64 *de);
1387 #define OBD_NOT_FOUND (-1)
1389 static int common_param_init(struct find_param *param, char *path)
1391 int lumlen = get_mds_md_size(path);
1393 if (lumlen < PATH_MAX + 1)
1394 lumlen = PATH_MAX + 1;
1396 param->lumlen = lumlen;
1397 param->lmd = malloc(sizeof(lstat_t) + param->lumlen);
1398 if (param->lmd == NULL) {
1399 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1400 "error: allocation of %zu bytes for ioctl",
1401 sizeof(lstat_t) + param->lumlen);
1405 param->fp_lmv_count = 256;
1406 param->fp_lmv_md = malloc(lmv_user_md_size(256, LMV_MAGIC_V1));
1407 if (param->fp_lmv_md == NULL) {
1408 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1409 "error: allocation of %d bytes for ioctl",
1410 lmv_user_md_size(256, LMV_MAGIC_V1));
1414 param->got_uuids = 0;
1415 param->obdindexes = NULL;
1416 param->obdindex = OBD_NOT_FOUND;
1417 param->mdtindex = OBD_NOT_FOUND;
1421 static void find_param_fini(struct find_param *param)
1423 if (param->obdindexes)
1424 free(param->obdindexes);
1429 if (param->fp_lmv_md)
1430 free(param->fp_lmv_md);
1433 static int cb_common_fini(char *path, DIR *parent, DIR *d, void *data,
1434 struct dirent64 *de)
1436 struct find_param *param = (struct find_param *)data;
1441 /* set errno upon failure */
1442 static DIR *opendir_parent(char *path)
1448 fname = strrchr(path, '/');
1450 return opendir(".");
1454 parent = opendir(path);
1459 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1461 struct lmv_user_md *lmv = (struct lmv_user_md *)param->fp_lmv_md;
1464 lmv->lum_stripe_count = param->fp_lmv_count;
1465 lmv->lum_magic = LMV_MAGIC_V1;
1466 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, lmv);
1470 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1471 struct lov_user_mds_data *lmd, int lumlen)
1473 lstat_t *st = &lmd->lmd_st;
1476 if (parent == NULL && dir == NULL)
1480 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1481 } else if (parent) {
1482 char *fname = strrchr(path, '/');
1484 fname = (fname == NULL ? path : fname + 1);
1485 /* retrieve needed file info */
1486 strncpy((char *)lmd, fname, lumlen);
1487 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1491 if (errno == ENOTTY) {
1492 /* ioctl is not supported, it is not a lustre fs.
1493 * Do the regular lstat(2) instead. */
1494 ret = lstat_f(path, st);
1497 llapi_error(LLAPI_MSG_ERROR, ret,
1498 "error: %s: lstat failed for %s",
1501 } else if (errno == ENOENT) {
1503 llapi_error(LLAPI_MSG_WARN, ret,
1504 "warning: %s: %s does not exist",
1506 } else if (errno != EISDIR) {
1508 llapi_error(LLAPI_MSG_ERROR, ret,
1509 "%s ioctl failed for %s.",
1510 dir ? "LL_IOC_MDC_GETINFO" :
1511 "IOC_MDC_GETFILEINFO", path);
1514 llapi_error(LLAPI_MSG_ERROR, ret,
1515 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1522 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1523 semantic_func_t sem_init,
1524 semantic_func_t sem_fini, void *data,
1525 struct dirent64 *de)
1527 struct find_param *param = (struct find_param *)data;
1528 struct dirent64 *dent;
1536 if (!d && errno != ENOTDIR) {
1538 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1541 } else if (!d && !parent) {
1542 /* ENOTDIR. Open the parent dir. */
1543 p = opendir_parent(path);
1550 if (sem_init && (ret = sem_init(path, parent ?: p, d, data, de)))
1553 if (!d || (param->get_lmv && !param->recursive)) {
1558 while ((dent = readdir64(d)) != NULL) {
1559 param->have_fileinfo = 0;
1561 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1564 /* Don't traverse .lustre directory */
1565 if (!(strcmp(dent->d_name, dot_lustre_name)))
1569 if ((len + dent->d_reclen + 2) > size) {
1570 llapi_err_noerrno(LLAPI_MSG_ERROR,
1571 "error: %s: string buffer is too small",
1576 strcat(path, dent->d_name);
1578 if (dent->d_type == DT_UNKNOWN) {
1579 lstat_t *st = ¶m->lmd->lmd_st;
1581 ret = get_lmd_info(path, d, NULL, param->lmd,
1585 llapi_filetype_dir_table[st->st_mode &
1591 switch (dent->d_type) {
1593 llapi_err_noerrno(LLAPI_MSG_ERROR,
1594 "error: %s: '%s' is UNKNOWN type %d",
1595 __func__, dent->d_name, dent->d_type);
1598 ret = llapi_semantic_traverse(path, size, d, sem_init,
1599 sem_fini, data, dent);
1606 ret = sem_init(path, d, NULL, data, dent);
1610 if (sem_fini && ret == 0)
1611 sem_fini(path, d, NULL, data, dent);
1619 sem_fini(path, parent, d, data, de);
1628 static int param_callback(char *path, semantic_func_t sem_init,
1629 semantic_func_t sem_fini, struct find_param *param)
1631 int ret, len = strlen(path);
1634 if (len > PATH_MAX) {
1636 llapi_error(LLAPI_MSG_ERROR, ret,
1637 "Path name '%s' is too long", path);
1641 buf = (char *)malloc(PATH_MAX + 1);
1645 strncpy(buf, path, PATH_MAX + 1);
1646 ret = common_param_init(param, buf);
1651 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1652 sem_fini, param, NULL);
1654 find_param_fini(param);
1656 return ret < 0 ? ret : 0;
1659 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1661 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1664 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1669 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1671 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1674 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1679 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1683 fd = open(path, O_RDONLY);
1686 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1690 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1696 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1700 fd = open(path, O_RDONLY);
1703 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1707 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1718 * If uuidp is NULL, return the number of available obd uuids.
1719 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1720 * there are more OSTs then allocated to uuidp, then an error is returned with
1721 * the ost_count set to number of available obd uuids.
1723 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1724 int *ost_count, enum tgt_type type)
1726 struct obd_uuid name;
1729 int rc = 0, index = 0;
1731 /* Get the lov name */
1732 if (type == LOV_TYPE) {
1733 rc = llapi_file_fget_lov_uuid(fd, &name);
1737 rc = llapi_file_fget_lmv_uuid(fd, &name);
1742 /* Now get the ost uuids from /proc */
1743 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1744 type == LOV_TYPE ? "lov" : "lmv", name.uuid);
1745 fp = fopen(buf, "r");
1748 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1752 while (fgets(buf, sizeof(buf), fp) != NULL) {
1753 if (uuidp && (index < *ost_count)) {
1754 if (sscanf(buf, "%d: %s", &index, uuidp[index].uuid) <2)
1762 if (uuidp && (index > *ost_count))
1769 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1771 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1774 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1779 root = opendir(mnt);
1782 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1787 rc = ioctl(dirfd(root), LL_IOC_GETOBDCOUNT, count);
1795 /* Check if user specified value matches a real uuid. Ignore _UUID,
1796 * -osc-4ba41334, other trailing gunk in comparison.
1797 * @param real_uuid ends in "_UUID"
1798 * @param search_uuid may or may not end in "_UUID"
1800 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1802 int cmplen = strlen(real_uuid);
1803 int searchlen = strlen(search_uuid);
1805 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1807 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1810 /* The UUIDs may legitimately be different lengths, if
1811 * the system was upgraded from an older version. */
1812 if (cmplen != searchlen)
1815 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1818 /* Here, param->obduuid points to a single obduuid, the index of which is
1819 * returned in param->obdindex */
1820 static int setup_obd_uuid(DIR *dir, char *dname, struct find_param *param)
1822 struct obd_uuid obd_uuid;
1823 char uuid[sizeof(struct obd_uuid)];
1828 if (param->got_uuids)
1831 /* Get the lov/lmv name */
1833 rc = llapi_file_fget_lmv_uuid(dirfd(dir), &obd_uuid);
1835 rc = llapi_file_fget_lov_uuid(dirfd(dir), &obd_uuid);
1837 if (rc != -ENOTTY) {
1838 llapi_error(LLAPI_MSG_ERROR, rc,
1839 "error: can't get lov name: %s", dname);
1846 param->got_uuids = 1;
1848 /* Now get the ost uuids from /proc */
1849 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1850 param->get_lmv ? "lmv" : "lov", obd_uuid.uuid);
1851 fp = fopen(buf, "r");
1854 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1858 if (!param->obduuid && !param->quiet && !param->obds_printed)
1859 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
1860 param->get_lmv ? "MDTS" : "OBDS:");
1862 while (fgets(buf, sizeof(buf), fp) != NULL) {
1863 if (sscanf(buf, "%d: %s", &index, uuid) < 2)
1866 if (param->obduuid) {
1867 if (llapi_uuid_match(uuid, param->obduuid->uuid)) {
1868 param->obdindex = index;
1871 } else if (!param->quiet && !param->obds_printed) {
1872 /* Print everything */
1873 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
1876 param->obds_printed = 1;
1880 if (param->obduuid && (param->obdindex == OBD_NOT_FOUND)) {
1881 llapi_err_noerrno(LLAPI_MSG_ERROR,
1882 "error: %s: unknown obduuid: %s",
1883 __func__, param->obduuid->uuid);
1890 /* In this case, param->obduuid will be an array of obduuids and
1891 * obd index for all these obduuids will be returned in
1892 * param->obdindexes */
1893 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
1894 int num_obds, int **obdindexes, int *obdindex,
1897 int ret, obdcount, obd_valid = 0, obdnum;
1899 struct obd_uuid *uuids = NULL;
1903 if (type == LOV_TYPE)
1904 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
1906 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
1910 obdcount = atoi(buf);
1911 uuids = (struct obd_uuid *)malloc(obdcount *
1912 sizeof(struct obd_uuid));
1917 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
1919 struct obd_uuid *uuids_temp;
1921 if (ret == -EOVERFLOW) {
1922 uuids_temp = realloc(uuids, obdcount *
1923 sizeof(struct obd_uuid));
1924 if (uuids_temp != NULL) {
1926 goto retry_get_uuids;
1932 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
1936 indexes = malloc(num_obds * sizeof(*obdindex));
1937 if (indexes == NULL) {
1942 for (obdnum = 0; obdnum < num_obds; obdnum++) {
1945 /* The user may have specified a simple index */
1946 i = strtol(obduuids[obdnum].uuid, &end, 0);
1947 if (end && *end == '\0' && i < obdcount) {
1948 indexes[obdnum] = i;
1951 for (i = 0; i < obdcount; i++) {
1952 if (llapi_uuid_match(uuids[i].uuid,
1953 obduuids[obdnum].uuid)) {
1954 indexes[obdnum] = i;
1960 if (i >= obdcount) {
1961 indexes[obdnum] = OBD_NOT_FOUND;
1962 llapi_err_noerrno(LLAPI_MSG_ERROR,
1963 "error: %s: unknown obduuid: %s",
1964 __func__, obduuids[obdnum].uuid);
1970 *obdindex = OBD_NOT_FOUND;
1972 *obdindex = obd_valid;
1974 *obdindexes = indexes;
1982 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
1986 if (param->mdtuuid) {
1987 ret = setup_indexes(dir, path, param->mdtuuid, param->num_mdts,
1988 ¶m->mdtindexes, ¶m->mdtindex, LMV_TYPE);
1992 if (param->obduuid) {
1993 ret = setup_indexes(dir, path, param->obduuid, param->num_obds,
1994 ¶m->obdindexes, ¶m->obdindex, LOV_TYPE);
1998 param->got_uuids = 1;
2002 int llapi_ostlist(char *path, struct find_param *param)
2007 dir = opendir(path);
2011 ret = setup_obd_uuid(dir, path, param);
2018 * Given a filesystem name, or a pathname of a file on a lustre filesystem,
2019 * tries to determine the path to the filesystem's clilov directory under /proc
2021 * fsname is limited to MTI_NAME_MAXLEN in lustre_idl.h
2022 * The NUL terminator is compensated by the additional "%s" bytes. */
2023 #define LOV_LEN (sizeof("/proc/fs/lustre/lov/%s-clilov-*") + MTI_NAME_MAXLEN)
2024 static int clilovpath(const char *fsname, const char *const pathname,
2028 char pattern[LOV_LEN];
2029 char buffer[PATH_MAX + 1];
2031 if (fsname == NULL) {
2032 rc = llapi_search_fsname(pathname, buffer);
2038 snprintf(pattern, sizeof(pattern), "/proc/fs/lustre/lov/%s-clilov-*",
2041 rc = first_match(pattern, buffer);
2045 strncpy(clilovpath, buffer, sizeof(buffer));
2051 * Given the path to a stripe attribute proc file, tries to open and
2052 * read the attribute and return the value using the attr parameter
2054 static int sattr_read_attr(const char *const fpath,
2059 char line[PATH_MAX + 1];
2062 f = fopen(fpath, "r");
2065 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open '%s'", fpath);
2069 if (fgets(line, sizeof(line), f) != NULL) {
2072 llapi_error(LLAPI_MSG_ERROR, errno, "Cannot read from '%s'", fpath);
2081 * Tries to determine the default stripe attributes for a given filesystem. The
2082 * filesystem to check should be specified by fsname, or will be determined
2085 static int sattr_get_defaults(const char *const fsname,
2086 const char *const pathname,
2087 unsigned int *scount,
2088 unsigned int *ssize,
2089 unsigned int *soffset)
2092 char dpath[PATH_MAX + 1];
2093 char fpath[PATH_MAX + 1];
2095 rc = clilovpath(fsname, pathname, dpath);
2100 snprintf(fpath, PATH_MAX, "%s/stripecount", dpath);
2101 rc = sattr_read_attr(fpath, scount);
2107 snprintf(fpath, PATH_MAX, "%s/stripesize", dpath);
2108 rc = sattr_read_attr(fpath, ssize);
2114 snprintf(fpath, PATH_MAX, "%s/stripeoffset", dpath);
2115 rc = sattr_read_attr(fpath, soffset);
2124 * Tries to gather the default stripe attributes for a given filesystem. If
2125 * the attributes can be determined, they are cached for easy retreival the
2126 * next time they are needed. Only a single filesystem's attributes are
2129 static int sattr_cache_get_defaults(const char *const fsname,
2130 const char *const pathname,
2131 unsigned int *scount,
2132 unsigned int *ssize,
2133 unsigned int *soffset)
2136 char fsname[PATH_MAX + 1];
2137 unsigned int stripecount;
2138 unsigned int stripesize;
2139 unsigned int stripeoffset;
2145 char fsname_buf[PATH_MAX + 1];
2146 unsigned int tmp[3];
2148 if (fsname == NULL) {
2149 rc = llapi_search_fsname(pathname, fsname_buf);
2153 strncpy(fsname_buf, fsname, PATH_MAX);
2156 if (strncmp(fsname_buf, cache.fsname, PATH_MAX) != 0) {
2158 * Ensure all 3 sattrs (count, size, and offset) are
2159 * successfully retrieved and stored in tmp before writing to
2162 rc = sattr_get_defaults(fsname_buf, NULL, &tmp[0], &tmp[1],
2167 cache.stripecount = tmp[0];
2168 cache.stripesize = tmp[1];
2169 cache.stripeoffset = tmp[2];
2170 strncpy(cache.fsname, fsname_buf, PATH_MAX);
2174 *scount = cache.stripecount;
2176 *ssize = cache.stripesize;
2178 *soffset = cache.stripeoffset;
2183 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2184 struct lov_user_ost_data_v1 *objects,
2185 int is_dir, int verbose, int depth,
2186 int raw, char *pool_name)
2188 char *prefix = is_dir ? "" : "lmm_";
2189 char *seperator = "";
2192 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2193 lmm_oi_set_seq(&lum->lmm_oi, 0);
2194 if (verbose & VERBOSE_DETAIL)
2195 llapi_printf(LLAPI_MSG_NORMAL, "(Default) ");
2198 if (depth && path && ((verbose != VERBOSE_OBJID) || !is_dir))
2199 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2201 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2202 llapi_printf(LLAPI_MSG_NORMAL, "lmm_magic: 0x%08X\n",
2204 llapi_printf(LLAPI_MSG_NORMAL, "lmm_seq: "LPX64"\n",
2205 lmm_oi_seq(&lum->lmm_oi));
2206 llapi_printf(LLAPI_MSG_NORMAL, "lmm_object_id: "LPX64"\n",
2207 lmm_oi_id(&lum->lmm_oi));
2210 if (verbose & VERBOSE_COUNT) {
2211 if (verbose & ~VERBOSE_COUNT)
2212 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_count: ",
2215 if (!raw && lum->lmm_stripe_count == 0) {
2216 unsigned int scount;
2217 rc = sattr_cache_get_defaults(NULL, path,
2221 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2224 llapi_error(LLAPI_MSG_ERROR, rc,
2225 "Cannot determine default"
2228 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2229 lum->lmm_stripe_count ==
2230 (typeof(lum->lmm_stripe_count))(-1)
2231 ? -1 : lum->lmm_stripe_count);
2234 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2235 (__s16)lum->lmm_stripe_count);
2237 seperator = is_dir ? " " : "\n";
2240 if (verbose & VERBOSE_SIZE) {
2241 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2242 if (verbose & ~VERBOSE_SIZE)
2243 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_size: ",
2245 if (is_dir && !raw && lum->lmm_stripe_size == 0) {
2247 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2250 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2252 llapi_error(LLAPI_MSG_ERROR, rc,
2253 "Cannot determine default"
2256 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2257 lum->lmm_stripe_size);
2259 seperator = is_dir ? " " : "\n";
2262 if ((verbose & VERBOSE_LAYOUT) && !is_dir) {
2263 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2264 if (verbose & ~VERBOSE_LAYOUT)
2265 llapi_printf(LLAPI_MSG_NORMAL, "%spattern: ",
2267 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2271 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2272 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2273 if (verbose & ~VERBOSE_GENERATION)
2274 llapi_printf(LLAPI_MSG_NORMAL, "%slayout_gen: ",
2276 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2277 (int)lum->lmm_layout_gen);
2281 if (verbose & VERBOSE_OFFSET) {
2282 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2283 if (verbose & ~VERBOSE_OFFSET)
2284 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_offset: ",
2287 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2288 lum->lmm_stripe_offset ==
2289 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2290 lum->lmm_stripe_offset);
2292 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2293 objects[0].l_ost_idx);
2294 seperator = is_dir ? " " : "\n";
2297 if ((verbose & VERBOSE_POOL) && (pool_name != NULL)) {
2298 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2299 if (verbose & ~VERBOSE_POOL)
2300 llapi_printf(LLAPI_MSG_NORMAL, "%spool: ",
2302 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2305 if (!is_dir || (is_dir && (verbose != VERBOSE_OBJID)))
2306 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2309 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2310 struct lov_user_ost_data_v1 *objects,
2311 char *path, int is_dir, int obdindex,
2312 int depth, int header, int raw)
2314 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2317 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2318 if (obdindex == objects[i].l_ost_idx) {
2326 lov_dump_user_lmm_header(lum, path, objects, is_dir, header,
2327 depth, raw, pool_name);
2329 if (!is_dir && (header & VERBOSE_OBJID) &&
2330 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2332 llapi_printf(LLAPI_MSG_NORMAL,
2333 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2335 for (i = 0; i < lum->lmm_stripe_count; i++) {
2336 int idx = objects[i].l_ost_idx;
2337 long long oid = ostid_id(&objects[i].l_ost_oi);
2338 long long gr = ostid_seq(&objects[i].l_ost_oi);
2339 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx)) {
2341 sprintf(fmt, "%s%s%s\n",
2342 "\t%6u\t%14llu\t%#13llx\t",
2343 (fid_seq_is_rsvd(gr) ||
2344 fid_seq_is_mdt0(gr)) ?
2345 "%14llu" : "%#14llx", "%s");
2346 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2348 obdindex == idx ? " *" : "");
2352 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2356 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2357 char *path, int obdindex, int depth, int verbose)
2359 struct lmv_user_mds_data *objects = lum->lum_objects;
2360 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2361 int i, obdstripe = 0;
2363 if (obdindex != OBD_NOT_FOUND) {
2364 for (i = 0; i < lum->lum_stripe_count; i++) {
2365 if (obdindex == objects[i].lum_mds) {
2366 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix,
2376 /* show all information default */
2378 if (lum->lum_magic == LMV_USER_MAGIC)
2379 verbose = VERBOSE_POOL | VERBOSE_COUNT | VERBOSE_OFFSET;
2381 verbose = VERBOSE_OBJID;
2384 if (lum->lum_magic == LMV_USER_MAGIC)
2385 verbose &= ~VERBOSE_OBJID;
2387 if (depth && path && ((verbose != VERBOSE_OBJID)))
2388 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2390 if (verbose & VERBOSE_COUNT) {
2391 if (verbose & ~VERBOSE_COUNT)
2392 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2393 llapi_printf(LLAPI_MSG_NORMAL, "%u\n",
2394 (int)lum->lum_stripe_count);
2397 if (verbose & VERBOSE_OFFSET) {
2398 if (verbose & ~VERBOSE_OFFSET)
2399 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2400 llapi_printf(LLAPI_MSG_NORMAL, "%d\n",
2401 (int)lum->lum_stripe_offset);
2404 if (verbose & VERBOSE_OBJID) {
2405 if ((obdstripe == 1))
2406 llapi_printf(LLAPI_MSG_NORMAL,
2407 "\tmdtidx\t\t FID[seq:oid:ver]\n");
2408 for (i = 0; i < lum->lum_stripe_count; i++) {
2409 int idx = objects[i].lum_mds;
2410 struct lu_fid *fid = &objects[i].lum_fid;
2411 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2412 llapi_printf(LLAPI_MSG_NORMAL,
2413 "\t%6u\t\t "DFID"\t\t%s\n",
2415 obdindex == idx ? " *" : "");
2420 if ((verbose & VERBOSE_POOL) && (pool_name[0] != '\0')) {
2421 if (verbose & ~VERBOSE_POOL)
2422 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2424 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2426 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2429 void llapi_lov_dump_user_lmm(struct find_param *param, char *path, int is_dir)
2434 magic = (__u32)param->fp_lmv_md->lum_magic;
2436 magic = *(__u32 *)¶m->lmd->lmd_lmm; /* lum->lmm_magic */
2439 case LOV_USER_MAGIC_V1:
2440 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, NULL,
2441 param->lmd->lmd_lmm.lmm_objects,
2443 param->obdindex, param->maxdepth,
2444 param->verbose, param->raw);
2446 case LOV_USER_MAGIC_V3: {
2447 char pool_name[LOV_MAXPOOLNAME + 1];
2448 struct lov_user_ost_data_v1 *objects;
2449 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2451 strncpy(pool_name, lmmv3->lmm_pool_name, LOV_MAXPOOLNAME);
2452 pool_name[LOV_MAXPOOLNAME] = '\0';
2453 objects = lmmv3->lmm_objects;
2454 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, pool_name,
2455 objects, path, is_dir,
2456 param->obdindex, param->maxdepth,
2457 param->verbose, param->raw);
2461 case LMV_USER_MAGIC: {
2462 char pool_name[LOV_MAXPOOLNAME + 1];
2463 struct lmv_user_md *lum;
2465 lum = (struct lmv_user_md *)param->fp_lmv_md;
2466 strncpy(pool_name, lum->lum_pool_name, LOV_MAXPOOLNAME);
2467 lmv_dump_user_lmm(lum, pool_name, path,
2468 param->obdindex, param->maxdepth,
2473 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
2474 "(expecting one of %#x %#x %#x %#x)\n",
2475 *(__u32 *)¶m->lmd->lmd_lmm,
2476 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
2477 LMV_USER_MAGIC, LMV_MAGIC_V1);
2482 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
2488 fname = strrchr(path, '/');
2490 /* It should be a file (or other non-directory) */
2491 if (fname == NULL) {
2492 dname = (char *)malloc(2);
2496 fname = (char *)path;
2498 dname = (char *)malloc(fname - path + 1);
2501 strncpy(dname, path, fname - path);
2502 dname[fname - path] = '\0';
2506 fd = open(dname, O_RDONLY);
2513 strcpy((char *)lum, fname);
2514 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
2517 if (close(fd) == -1 && rc == 0)
2524 int llapi_file_lookup(int dirfd, const char *name)
2526 struct obd_ioctl_data data = { 0 };
2531 if (dirfd < 0 || name == NULL)
2534 data.ioc_version = OBD_IOCTL_VERSION;
2535 data.ioc_len = sizeof(data);
2536 data.ioc_inlbuf1 = (char *)name;
2537 data.ioc_inllen1 = strlen(name) + 1;
2539 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
2541 llapi_error(LLAPI_MSG_ERROR, rc,
2542 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
2547 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
2553 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2554 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2556 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2557 * The table below gives the answers for the specified parameters (value and
2558 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2559 * --------------------------------------
2560 * 1 | file > limit; sign > 0 | -1 / -1 |
2561 * 2 | file = limit; sign > 0 | -1 / -1 |
2562 * 3 | file < limit; sign > 0 | ? / 1 |
2563 * 4 | file > limit; sign = 0 | -1 / -1 |
2564 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2565 * 6 | file < limit; sign = 0 | ? / -1 |
2566 * 7 | file > limit; sign < 0 | 1 / 1 |
2567 * 8 | file = limit; sign < 0 | ? / -1 |
2568 * 9 | file < limit; sign < 0 | ? / -1 |
2569 * --------------------------------------
2570 * Note: 5th actually means that the value is within the interval
2571 * (limit - margin, limit]. */
2572 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2573 int sign, int negopt, unsigned long long margin,
2579 /* Drop the fraction of margin (of days). */
2580 if (file + margin <= limit)
2582 } else if (sign == 0) {
2583 if (file <= limit && file + margin > limit)
2585 else if (file + margin <= limit)
2587 } else if (sign < 0) {
2594 return negopt ? ~ret + 1 : ret;
2597 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
2598 * Return -1 or 1 if file timestamp does not or does match the given criteria
2599 * correspondingly. Return 0 if the MDS time is being checked and there are
2600 * attributes on OSTs and it is not yet clear if the timespamp matches.
2602 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
2603 * updated timestamps. */
2604 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
2609 /* Check if file is accepted. */
2611 ret = find_value_cmp(st->st_atime, param->atime,
2612 param->asign, param->exclude_atime,
2620 ret = find_value_cmp(st->st_mtime, param->mtime,
2621 param->msign, param->exclude_mtime,
2626 /* If the previous check matches, but this one is not yet clear,
2627 * we should return 0 to do an RPC on OSTs. */
2633 ret = find_value_cmp(st->st_ctime, param->ctime,
2634 param->csign, param->exclude_ctime,
2639 /* If the previous check matches, but this one is not yet clear,
2640 * we should return 0 to do an RPC on OSTs. */
2649 * Check whether the stripes matches the indexes user provided
2653 static int check_obd_match(struct find_param *param)
2655 lstat_t *st = ¶m->lmd->lmd_st;
2656 struct lov_user_ost_data_v1 *lmm_objects;
2659 if (param->obduuid && param->obdindex == OBD_NOT_FOUND)
2662 if (!S_ISREG(st->st_mode))
2665 /* Only those files should be accepted, which have a
2666 * stripe on the specified OST. */
2667 if (!param->lmd->lmd_lmm.lmm_stripe_count)
2670 if (param->lmd->lmd_lmm.lmm_magic ==
2671 LOV_USER_MAGIC_V3) {
2672 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2674 lmm_objects = lmmv3->lmm_objects;
2675 } else if (param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) {
2676 lmm_objects = param->lmd->lmd_lmm.lmm_objects;
2678 llapi_err_noerrno(LLAPI_MSG_ERROR, "%s:Unknown magic: 0x%08X\n",
2679 __func__, param->lmd->lmd_lmm.lmm_magic);
2683 for (i = 0; i < param->lmd->lmd_lmm.lmm_stripe_count; i++) {
2684 for (j = 0; j < param->num_obds; j++) {
2685 if (param->obdindexes[j] ==
2686 lmm_objects[i].l_ost_idx) {
2687 if (param->exclude_obd)
2694 if (param->exclude_obd)
2699 static int check_mdt_match(struct find_param *param)
2703 if (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND)
2706 /* FIXME: For striped dir, we should get stripe information and check */
2707 for (i = 0; i < param->num_mdts; i++) {
2708 if (param->mdtindexes[i] == param->file_mdtindex)
2709 return !param->exclude_mdt;
2712 if (param->exclude_mdt)
2718 * Check whether the obd is active or not, if it is
2719 * not active, just print the object affected by this
2722 static int print_failed_tgt(struct find_param *param, char *path, int type)
2724 struct obd_statfs stat_buf;
2725 struct obd_uuid uuid_buf;
2728 LASSERT(type == LL_STATFS_LOV || type == LL_STATFS_LMV);
2730 memset(&stat_buf, 0, sizeof(struct obd_statfs));
2731 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
2732 ret = llapi_obd_statfs(path, type,
2733 param->obdindex, &stat_buf,
2736 llapi_printf(LLAPI_MSG_NORMAL,
2737 "obd_uuid: %s failed %s ",
2738 param->obduuid->uuid,
2744 static int cb_find_init(char *path, DIR *parent, DIR *dir,
2745 void *data, struct dirent64 *de)
2747 struct find_param *param = (struct find_param *)data;
2748 int decision = 1; /* 1 is accepted; -1 is rejected. */
2749 lstat_t *st = ¶m->lmd->lmd_st;
2751 int checked_type = 0;
2754 LASSERT(parent != NULL || dir != NULL);
2756 if (param->have_fileinfo == 0)
2757 param->lmd->lmd_lmm.lmm_stripe_count = 0;
2759 /* If a regular expression is presented, make the initial decision */
2760 if (param->pattern != NULL) {
2761 char *fname = strrchr(path, '/');
2762 fname = (fname == NULL ? path : fname + 1);
2763 ret = fnmatch(param->pattern, fname, 0);
2764 if ((ret == FNM_NOMATCH && !param->exclude_pattern) ||
2765 (ret == 0 && param->exclude_pattern))
2769 /* See if we can check the file type from the dirent. */
2770 if (param->type && de != NULL && de->d_type != DT_UNKNOWN &&
2771 de->d_type < DT_MAX) {
2773 if (llapi_dir_filetype_table[de->d_type] == param->type) {
2774 if (param->exclude_type)
2777 if (!param->exclude_type)
2784 /* Request MDS for the stat info if some of these parameters need
2785 * to be compared. */
2786 if (param->obduuid || param->mdtuuid || param->check_uid ||
2787 param->check_gid || param->check_pool || param->atime ||
2788 param->ctime || param->mtime || param->check_size ||
2789 param->check_stripecount || param->check_stripesize ||
2790 param->check_layout)
2793 if (param->type && checked_type == 0)
2796 if (param->have_fileinfo == 0 && decision == 0) {
2797 ret = get_lmd_info(path, parent, dir, param->lmd,
2801 ret = llapi_file_fget_mdtidx(dirfd(dir),
2802 ¶m->file_mdtindex);
2807 ret = lstat_f(path, &tmp_st);
2810 llapi_error(LLAPI_MSG_ERROR, ret,
2811 "error: %s: lstat failed"
2812 "for %s", __func__, path);
2815 if (S_ISREG(tmp_st.st_mode)) {
2816 fd = open(path, O_RDONLY);
2818 ret = llapi_file_fget_mdtidx(fd,
2819 ¶m->file_mdtindex);
2825 /* For special inode, it assumes to
2826 * reside on the same MDT with the
2829 ret = llapi_file_fget_mdtidx(fd,
2830 ¶m->file_mdtindex);
2843 if (param->type && !checked_type) {
2844 if ((st->st_mode & S_IFMT) == param->type) {
2845 if (param->exclude_type)
2848 if (!param->exclude_type)
2854 if (param->obduuid || param->mdtuuid) {
2855 if (lustre_fs && param->got_uuids &&
2856 param->st_dev != st->st_dev) {
2857 /* A lustre/lustre mount point is crossed. */
2858 param->got_uuids = 0;
2859 param->obds_printed = 0;
2860 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2863 if (lustre_fs && !param->got_uuids) {
2864 ret = setup_target_indexes(dir ? dir : parent, path,
2869 param->st_dev = st->st_dev;
2870 } else if (!lustre_fs && param->got_uuids) {
2871 /* A lustre/non-lustre mount point is crossed. */
2872 param->got_uuids = 0;
2873 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2877 if (param->check_stripesize) {
2878 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_size,
2880 param->stripesize_sign,
2881 param->exclude_stripesize,
2882 param->stripesize_units, 0);
2887 if (param->check_stripecount) {
2888 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_count,
2890 param->stripecount_sign,
2891 param->exclude_stripecount, 1, 0);
2896 if (param->check_layout) {
2899 found = (param->lmd->lmd_lmm.lmm_pattern & param->layout);
2900 if ((param->lmd->lmd_lmm.lmm_pattern == 0xFFFFFFFF) ||
2901 (found && param->exclude_layout) ||
2902 (!found && !param->exclude_layout)) {
2908 /* If an OBD UUID is specified but none matches, skip this file. */
2909 if ((param->obduuid && param->obdindex == OBD_NOT_FOUND) ||
2910 (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND))
2913 /* If a OST or MDT UUID is given, and some OST matches,
2915 if (param->obdindex != OBD_NOT_FOUND ||
2916 param->mdtindex != OBD_NOT_FOUND) {
2917 if (param->obduuid) {
2918 if (check_obd_match(param)) {
2919 /* If no mdtuuid is given, we are done.
2920 * Otherwise, fall through to the mdtuuid
2922 if (!param->mdtuuid)
2928 if (param->mdtuuid) {
2929 if (check_mdt_match(param))
2935 if (param->check_uid) {
2936 if (st->st_uid == param->uid) {
2937 if (param->exclude_uid)
2940 if (!param->exclude_uid)
2945 if (param->check_gid) {
2946 if (st->st_gid == param->gid) {
2947 if (param->exclude_gid)
2950 if (!param->exclude_gid)
2955 if (param->check_pool) {
2956 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2958 /* empty requested pool is taken as no pool search => V1 */
2959 if (((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) &&
2960 (param->poolname[0] == '\0')) ||
2961 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
2962 (strncmp(lmmv3->lmm_pool_name,
2963 param->poolname, LOV_MAXPOOLNAME) == 0)) ||
2964 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
2965 (strcmp(param->poolname, "*") == 0))) {
2966 if (param->exclude_pool)
2969 if (!param->exclude_pool)
2974 /* Check the time on mds. */
2976 if (param->atime || param->ctime || param->mtime) {
2979 for_mds = lustre_fs ? (S_ISREG(st->st_mode) &&
2980 param->lmd->lmd_lmm.lmm_stripe_count)
2982 decision = find_time_check(st, param, for_mds);
2987 /* If file still fits the request, ask ost for updated info.
2988 The regular stat is almost of the same speed as some new
2989 'glimpse-size-ioctl'. */
2991 if (param->check_size && S_ISREG(st->st_mode) &&
2992 param->lmd->lmd_lmm.lmm_stripe_count)
2996 /* For regular files with the stripe the decision may have not
2997 * been taken yet if *time or size is to be checked. */
2998 LASSERT((S_ISREG(st->st_mode) &&
2999 param->lmd->lmd_lmm.lmm_stripe_count) ||
3000 param->mdtindex != OBD_NOT_FOUND);
3002 if (param->obdindex != OBD_NOT_FOUND)
3003 print_failed_tgt(param, path, LL_STATFS_LOV);
3005 if (param->mdtindex != OBD_NOT_FOUND)
3006 print_failed_tgt(param, path, LL_STATFS_LMV);
3009 ret = ioctl(dirfd(dir), IOC_LOV_GETINFO,
3010 (void *)param->lmd);
3011 } else if (parent) {
3012 ret = ioctl(dirfd(parent), IOC_LOV_GETINFO,
3013 (void *)param->lmd);
3017 if (errno == ENOENT) {
3018 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3019 "warning: %s: %s does not exist",
3024 llapi_error(LLAPI_MSG_ERROR, ret,
3025 "%s: IOC_LOV_GETINFO on %s failed",
3031 /* Check the time on osc. */
3032 decision = find_time_check(st, param, 0);
3039 if (param->check_size)
3040 decision = find_value_cmp(st->st_size, param->size,
3041 param->size_sign, param->exclude_size,
3042 param->size_units, 0);
3044 if (decision != -1) {
3045 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3047 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3049 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3053 /* Do not get down anymore? */
3054 if (param->depth == param->maxdepth)
3061 int llapi_find(char *path, struct find_param *param)
3063 return param_callback(path, cb_find_init, cb_common_fini, param);
3067 * Get MDT number that the file/directory inode referenced
3068 * by the open fd resides on.
3069 * Return 0 and mdtidx on success, or -ve errno.
3071 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
3073 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
3078 static int cb_get_mdt_index(char *path, DIR *parent, DIR *d, void *data,
3079 struct dirent64 *de)
3081 struct find_param *param = (struct find_param *)data;
3085 LASSERT(parent != NULL || d != NULL);
3088 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3089 } else if (parent) {
3092 fd = open(path, O_RDONLY);
3094 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
3102 if (ret == -ENODATA) {
3103 if (!param->obduuid)
3104 llapi_printf(LLAPI_MSG_NORMAL,
3105 "%s has no stripe info\n", path);
3107 } else if (ret == -ENOENT) {
3108 llapi_error(LLAPI_MSG_WARN, ret,
3109 "warning: %s: %s does not exist",
3112 } else if (ret == -ENOTTY) {
3113 llapi_error(LLAPI_MSG_ERROR, ret,
3114 "%s: '%s' not on a Lustre fs?",
3117 llapi_error(LLAPI_MSG_ERROR, ret,
3118 "error: %s: LL_IOC_GET_MDTIDX failed for %s",
3124 /* The 'LASSERT(parent != NULL || d != NULL);' guarantees
3125 * that either 'd' or 'parent' is not null.
3126 * So in all cases llapi_file_fget_mdtidx() is called,
3127 * thus initializing 'mdtidx'. */
3128 if (param->quiet || !(param->verbose & VERBOSE_DETAIL))
3129 /* coverity[uninit_use_in_call] */
3130 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
3132 /* coverity[uninit_use_in_call] */
3133 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
3137 /* Do not get down anymore? */
3138 if (param->depth == param->maxdepth)
3145 static int cb_getstripe(char *path, DIR *parent, DIR *d, void *data,
3146 struct dirent64 *de)
3148 struct find_param *param = (struct find_param *)data;
3151 LASSERT(parent != NULL || d != NULL);
3153 if (param->obduuid) {
3155 ret = setup_obd_uuid(d ? d : parent, path, param);
3161 if (param->get_lmv) {
3162 ret = cb_get_dirstripe(path, d, param);
3164 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
3165 (void *)¶m->lmd->lmd_lmm);
3168 } else if (parent) {
3169 char *fname = strrchr(path, '/');
3170 fname = (fname == NULL ? path : fname + 1);
3172 if (param->get_lmv) {
3173 llapi_printf(LLAPI_MSG_NORMAL,
3174 "%s get dirstripe information for file\n",
3179 strncpy((char *)¶m->lmd->lmd_lmm, fname, param->lumlen);
3181 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
3182 (void *)¶m->lmd->lmd_lmm);
3186 if (errno == ENODATA && d != NULL) {
3187 /* We need to "fake" the "use the default" values
3188 * since the lmm struct is zeroed out at this point.
3189 * The magic needs to be set in order to satisfy
3190 * a check later on in the code path.
3191 * The object_seq needs to be set for the "(Default)"
3192 * prefix to be displayed. */
3193 struct lov_user_md *lmm = ¶m->lmd->lmd_lmm;
3194 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3196 ostid_set_seq(&lmm->lmm_oi,
3197 FID_SEQ_LOV_DEFAULT);
3198 lmm->lmm_stripe_count = 0;
3199 lmm->lmm_stripe_size = 0;
3200 lmm->lmm_stripe_offset = -1;
3202 } else if (errno == ENODATA && parent != NULL) {
3203 if (!param->obduuid && !param->mdtuuid)
3204 llapi_printf(LLAPI_MSG_NORMAL,
3205 "%s has no stripe info\n", path);
3207 } else if (errno == ENOENT) {
3208 llapi_error(LLAPI_MSG_WARN, -ENOENT,
3209 "warning: %s: %s does not exist",
3212 } else if (errno == ENOTTY) {
3214 llapi_error(LLAPI_MSG_ERROR, ret,
3215 "%s: '%s' not on a Lustre fs?",
3219 llapi_error(LLAPI_MSG_ERROR, ret,
3220 "error: %s: %s failed for %s",
3221 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
3222 "IOC_MDC_GETFILESTRIPE", path);
3229 if (!(param->verbose & VERBOSE_MDTINDEX))
3230 llapi_lov_dump_user_lmm(param, path, d ? 1 : 0);
3233 /* Do not get down anymore? */
3234 if (param->depth == param->maxdepth)
3241 int llapi_getstripe(char *path, struct find_param *param)
3243 return param_callback(path, (param->verbose & VERBOSE_MDTINDEX) ?
3244 cb_get_mdt_index : cb_getstripe,
3245 cb_common_fini, param);
3248 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
3249 struct obd_statfs *stat_buf,
3250 struct obd_uuid *uuid_buf)
3253 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3255 struct obd_ioctl_data data = { 0 };
3258 data.ioc_inlbuf1 = (char *)&type;
3259 data.ioc_inllen1 = sizeof(__u32);
3260 data.ioc_inlbuf2 = (char *)&index;
3261 data.ioc_inllen2 = sizeof(__u32);
3262 data.ioc_pbuf1 = (char *)stat_buf;
3263 data.ioc_plen1 = sizeof(struct obd_statfs);
3264 data.ioc_pbuf2 = (char *)uuid_buf;
3265 data.ioc_plen2 = sizeof(struct obd_uuid);
3267 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3269 llapi_error(LLAPI_MSG_ERROR, rc,
3270 "llapi_obd_statfs: error packing ioctl data");
3274 fd = open(path, O_RDONLY);
3275 if (errno == EISDIR)
3276 fd = open(path, O_DIRECTORY | O_RDONLY);
3279 rc = errno ? -errno : -EBADF;
3280 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
3284 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
3286 rc = errno ? -errno : -EINVAL;
3292 #define MAX_STRING_SIZE 128
3294 int llapi_ping(char *obd_type, char *obd_name)
3296 char path[MAX_STRING_SIZE];
3300 snprintf(path, MAX_STRING_SIZE, "/proc/fs/lustre/%s/%s/ping",
3301 obd_type, obd_name);
3303 fd = open(path, O_WRONLY);
3306 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
3310 /* The purpose is to send a byte as a ping, whatever this byte is. */
3311 /* coverity[uninit_use_in_call] */
3312 rc = write(fd, buf, 1);
3322 int llapi_target_iterate(int type_num, char **obd_type,
3323 void *args, llapi_cb_t cb)
3325 char buf[MAX_STRING_SIZE];
3326 FILE *fp = fopen(DEVICES_LIST, "r");
3331 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
3335 while (fgets(buf, sizeof(buf), fp) != NULL) {
3336 char *obd_type_name = NULL;
3337 char *obd_name = NULL;
3338 char *obd_uuid = NULL;
3340 struct obd_statfs osfs_buffer;
3342 while(bufp[0] == ' ')
3345 for(i = 0; i < 3; i++) {
3346 obd_type_name = strsep(&bufp, " ");
3348 obd_name = strsep(&bufp, " ");
3349 obd_uuid = strsep(&bufp, " ");
3351 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
3353 for (i = 0; i < type_num; i++) {
3354 if (strcmp(obd_type_name, obd_type[i]) != 0)
3357 cb(obd_type_name, obd_name, obd_uuid, args);
3364 static void do_target_check(char *obd_type_name, char *obd_name,
3365 char *obd_uuid, void *args)
3369 rc = llapi_ping(obd_type_name, obd_name);
3370 if (rc == ENOTCONN) {
3371 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
3373 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
3375 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
3379 int llapi_target_check(int type_num, char **obd_type, char *dir)
3381 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
3384 #undef MAX_STRING_SIZE
3386 /* Is this a lustre fs? */
3387 int llapi_is_lustre_mnttype(const char *type)
3389 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
3392 /* Is this a lustre client fs? */
3393 int llapi_is_lustre_mnt(struct mntent *mnt)
3395 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
3396 strstr(mnt->mnt_fsname, ":/") != NULL);
3399 int llapi_quotacheck(char *mnt, int check_type)
3404 root = opendir(mnt);
3407 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3411 rc = ioctl(dirfd(root), LL_IOC_QUOTACHECK, check_type);
3419 int llapi_poll_quotacheck(char *mnt, struct if_quotacheck *qchk)
3425 root = opendir(mnt);
3428 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3433 rc = ioctl(dirfd(root), LL_IOC_POLL_QUOTACHECK, qchk);
3437 if (poll_intvl < 30)
3445 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
3450 root = opendir(mnt);
3453 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3457 rc = ioctl(dirfd(root), LL_IOC_QUOTACTL, qctl);
3465 static int cb_quotachown(char *path, DIR *parent, DIR *d, void *data,
3466 struct dirent64 *de)
3468 struct find_param *param = (struct find_param *)data;
3472 LASSERT(parent != NULL || d != NULL);
3474 rc = get_lmd_info(path, parent, d, param->lmd, param->lumlen);
3476 if (rc == -ENODATA) {
3477 if (!param->obduuid && !param->quiet)
3478 llapi_error(LLAPI_MSG_ERROR, -ENODATA,
3479 "%s has no stripe info", path);
3481 } else if (rc == -ENOENT) {
3487 st = ¶m->lmd->lmd_st;
3489 /* libc chown() will do extra check, and if the real owner is
3490 * the same as the ones to set, it won't fall into kernel, so
3491 * invoke syscall directly. */
3492 rc = syscall(SYS_chown, path, -1, -1);
3494 llapi_error(LLAPI_MSG_ERROR, errno,
3495 "error: chown %s", path);
3497 rc = chmod(path, st->st_mode);
3500 llapi_error(LLAPI_MSG_ERROR, rc, "error: chmod %s (%hu)",
3507 int llapi_quotachown(char *path, int flag)
3509 struct find_param param;
3511 memset(¶m, 0, sizeof(param));
3512 param.recursive = 1;
3516 return param_callback(path, cb_quotachown, NULL, ¶m);
3522 #include <sys/wait.h>
3526 static int rmtacl_notify(int ops)
3530 int found = 0, fd = 0, rc = 0;
3532 fp = setmntent(MOUNTED, "r");
3535 llapi_error(LLAPI_MSG_ERROR, rc,
3536 "error setmntent(%s)", MOUNTED);
3541 mnt = getmntent(fp);
3545 if (!llapi_is_lustre_mnt(mnt))
3548 fd = open(mnt->mnt_dir, O_RDONLY | O_DIRECTORY);
3551 llapi_error(LLAPI_MSG_ERROR, rc,
3552 "Can't open '%s'\n", mnt->mnt_dir);
3556 rc = ioctl(fd, LL_IOC_RMTACL, ops);
3560 llapi_error(LLAPI_MSG_ERROR, rc,
3561 "ioctl RMTACL on '%s' err %d\n",
3571 return ((rc != 0) ? rc : found);
3574 static char *next_token(char *p, int div)
3580 while (*p && *p != ':' && !isspace(*p))
3583 while (*p == ':' || isspace(*p))
3586 return *p ? p : NULL;
3589 static int rmtacl_name2id(char *name, int is_user)
3594 pw = getpwnam(name);
3598 return (int)(pw->pw_uid);
3602 gr = getgrnam(name);
3606 return (int)(gr->gr_gid);
3610 static int isodigit(int c)
3612 return (c >= '0' && c <= '7') ? 1 : 0;
3616 * Whether the name is just digits string (uid/gid) already or not.
3621 static int str_is_id(char *str)
3628 if (*str == 'x' || *str == 'X') { /* for Hex. */
3629 if (!isxdigit(*(++str)))
3632 while (isxdigit(*(++str)));
3633 } else if (isodigit(*str)) { /* for Oct. */
3634 while (isodigit(*(++str)));
3636 } else if (isdigit(*str)) { /* for Dec. */
3637 while (isdigit(*(++str)));
3640 return (*str == 0) ? 1 : 0;
3650 #define RMTACL_OPTNAME(name) name, sizeof(name) - 1
3652 static rmtacl_name_t rmtacl_namelist[] = {
3653 { RMTACL_OPTNAME("user:"), 1, 0 },
3654 { RMTACL_OPTNAME("group:"), 0, 0 },
3655 { RMTACL_OPTNAME("default:user:"), 1, 0 },
3656 { RMTACL_OPTNAME("default:group:"), 0, 0 },
3657 /* for --tabular option */
3658 { RMTACL_OPTNAME("user"), 1, 1 },
3659 { RMTACL_OPTNAME("group"), 0, 1 },
3663 static int rgetfacl_output(char *str)
3665 char *start = NULL, *end = NULL;
3666 int is_user = 0, n, id;
3673 for (rn = rmtacl_namelist; rn->name; rn++) {
3674 if(strncmp(str, rn->name, rn->length) == 0) {
3675 if (!rn->next_token)
3676 start = str + rn->length;
3678 start = next_token(str + rn->length, 0);
3679 is_user = rn->is_user;
3684 end = next_token(start, 1);
3685 if (end == NULL || start == end) {
3686 n = printf("%s", str);
3692 id = rmtacl_name2id(start, is_user);
3693 if (id == INVALID_ID) {
3694 if (str_is_id(start)) {
3696 n = printf("%s", str);
3699 } else if ((id == NOBODY_UID && is_user) ||
3700 (id == NOBODY_GID && !is_user)) {
3702 n = printf("%s", str);
3706 n = printf("%s%d%s", str, id, end);
3711 static int child_status(int status)
3713 return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
3716 static int do_rmtacl(int argc, char *argv[], int ops, int (output_func)(char *))
3719 int fd[2], status, rc;
3726 llapi_error(LLAPI_MSG_ERROR, rc, "Can't create pipe\n");
3733 llapi_error(LLAPI_MSG_ERROR, rc, "Can't fork\n");
3738 /* child process redirects its output. */
3741 if (dup2(fd[1], 1) < 0) {
3743 llapi_error(LLAPI_MSG_ERROR, rc,
3744 "Can't dup2 %d\n", fd[1]);
3754 status = rmtacl_notify(ops);
3758 exit(execvp(argv[0], argv));
3761 /* the following is parent process */
3762 fp = fdopen(fd[0], "r");
3765 llapi_error(LLAPI_MSG_ERROR, rc, "fdopen %d failed\n", fd[0]);
3771 while (fgets(buf, PIPE_BUF, fp) != NULL) {
3772 if (output_func(buf) < 0)
3773 fprintf(stderr, "WARNING: unexpected error!\n[%s]\n",
3779 if (waitpid(pid, &status, 0) < 0) {
3781 llapi_error(LLAPI_MSG_ERROR, rc, "waitpid %d failed\n", pid);
3785 return child_status(status);
3788 int llapi_lsetfacl(int argc, char *argv[])
3790 return do_rmtacl(argc, argv, RMT_LSETFACL, NULL);
3793 int llapi_lgetfacl(int argc, char *argv[])
3795 return do_rmtacl(argc, argv, RMT_LGETFACL, NULL);
3798 int llapi_rsetfacl(int argc, char *argv[])
3800 return do_rmtacl(argc, argv, RMT_RSETFACL, NULL);
3803 int llapi_rgetfacl(int argc, char *argv[])
3805 return do_rmtacl(argc, argv, RMT_RGETFACL, rgetfacl_output);
3808 int llapi_cp(int argc, char *argv[])
3812 rc = rmtacl_notify(RMT_RSETFACL);
3816 exit(execvp(argv[0], argv));
3819 int llapi_ls(int argc, char *argv[])
3823 rc = rmtacl_notify(RMT_LGETFACL);
3827 exit(execvp(argv[0], argv));
3830 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
3831 * format must have %s%s, buf must be > 16
3832 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
3833 * then buf = "lustre-MDT0000"
3835 static int get_mdtname(char *name, char *format, char *buf)
3837 char suffix[]="-MDT0000";
3838 int len = strlen(name);
3840 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
3841 name[len - 5] = '\0';
3846 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
3849 /* Not enough room to add suffix */
3850 llapi_err_noerrno(LLAPI_MSG_ERROR,
3851 "MDT name too long |%s|", name);
3856 return sprintf(buf, format, name, suffix);
3859 /** ioctl on filsystem root, with mdtindex sent as data
3860 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
3861 * \param mdtidxp pointer to integer within data to be filled in with the
3862 * mdt index (0 if no mdt is specified). NULL won't be filled.
3864 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
3872 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
3873 Open root and parse mdt index. */
3874 if (mdtname[0] == '/') {
3876 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
3877 (char *)mdtname, -1);
3879 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
3881 ptr = fsname + strlen(fsname) - 8;
3883 index = strtol(ptr + 4, NULL, 10);
3884 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
3888 llapi_err_noerrno(LLAPI_MSG_ERROR,
3889 "Can't open %s: %d\n", mdtname, rc);
3896 rc = ioctl(fd, opc, data);
3901 if (rc && want_error)
3902 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d err %d", opc, rc);
3908 /****** Changelog API ********/
3910 static int changelog_ioctl(const char *mdtname, int opc, int id,
3911 long long recno, int flags)
3913 struct ioc_changelog data;
3917 data.icc_recno = recno;
3918 data.icc_flags = flags;
3919 idx = (int *)(&data.icc_mdtindex);
3921 return root_ioctl(mdtname, opc, &data, idx, WANT_ERROR);
3924 #define CHANGELOG_PRIV_MAGIC 0xCA8E1080
3925 struct changelog_private {
3928 lustre_kernelcomm kuc;
3931 /** Start reading from a changelog
3932 * @param priv Opaque private control structure
3933 * @param flags Start flags (e.g. CHANGELOG_FLAG_BLOCK)
3934 * @param device Report changes recorded on this MDT
3935 * @param startrec Report changes beginning with this record number
3936 * (just call llapi_changelog_fini when done; don't need an endrec)
3938 int llapi_changelog_start(void **priv, int flags, const char *device,
3941 struct changelog_private *cp;
3944 /* Set up the receiver control struct */
3945 cp = calloc(1, sizeof(*cp));
3949 cp->magic = CHANGELOG_PRIV_MAGIC;
3952 /* Set up the receiver */
3953 rc = libcfs_ukuc_start(&cp->kuc, 0 /* no group registration */);
3959 /* Tell the kernel to start sending */
3960 rc = changelog_ioctl(device, OBD_IOC_CHANGELOG_SEND, cp->kuc.lk_wfd,
3962 /* Only the kernel reference keeps the write side open */
3963 close(cp->kuc.lk_wfd);
3964 cp->kuc.lk_wfd = LK_NOFD;
3966 /* frees and clears priv */
3967 llapi_changelog_fini(priv);
3978 /** Finish reading from a changelog */
3979 int llapi_changelog_fini(void **priv)
3981 struct changelog_private *cp = (struct changelog_private *)*priv;
3983 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
3986 libcfs_ukuc_stop(&cp->kuc);
3992 /** Convert a changelog_rec to changelog_ext_rec, in this way client can treat
3993 * all records in the format of changelog_ext_rec, this can make record
3996 static inline int changelog_extend_rec(struct changelog_ext_rec *ext)
3998 if (!CHANGELOG_REC_EXTENDED(ext)) {
3999 struct changelog_rec *rec = (struct changelog_rec *)ext;
4001 memmove(ext->cr_name, rec->cr_name, rec->cr_namelen);
4002 fid_zero(&ext->cr_sfid);
4003 fid_zero(&ext->cr_spfid);
4010 /** Read the next changelog entry
4011 * @param priv Opaque private control structure
4012 * @param rech Changelog record handle; record will be allocated here
4013 * @return 0 valid message received; rec is set
4017 int llapi_changelog_recv(void *priv, struct changelog_ext_rec **rech)
4019 struct changelog_private *cp = (struct changelog_private *)priv;
4020 struct kuc_hdr *kuch;
4023 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4027 kuch = malloc(KUC_CHANGELOG_MSG_MAXSIZE);
4032 rc = libcfs_ukuc_msg_get(&cp->kuc, (char *)kuch,
4033 KUC_CHANGELOG_MSG_MAXSIZE,
4034 KUC_TRANSPORT_CHANGELOG);
4038 if ((kuch->kuc_transport != KUC_TRANSPORT_CHANGELOG) ||
4039 ((kuch->kuc_msgtype != CL_RECORD) &&
4040 (kuch->kuc_msgtype != CL_EOF))) {
4041 llapi_err_noerrno(LLAPI_MSG_ERROR,
4042 "Unknown changelog message type %d:%d\n",
4043 kuch->kuc_transport, kuch->kuc_msgtype);
4048 if (kuch->kuc_msgtype == CL_EOF) {
4049 if (cp->flags & CHANGELOG_FLAG_FOLLOW) {
4058 /* Our message is a changelog_ext_rec. Use pointer math to skip
4059 * kuch_hdr and point directly to the message payload.
4061 *rech = (struct changelog_ext_rec *)(kuch + 1);
4062 changelog_extend_rec(*rech);
4072 /** Release the changelog record when done with it. */
4073 int llapi_changelog_free(struct changelog_ext_rec **rech)
4076 /* We allocated memory starting at the kuc_hdr, but passed
4077 * the consumer a pointer to the payload.
4078 * Use pointer math to get back to the header.
4080 struct kuc_hdr *kuch = (struct kuc_hdr *)*rech - 1;
4087 int llapi_changelog_clear(const char *mdtname, const char *idstr,
4093 llapi_err_noerrno(LLAPI_MSG_ERROR,
4094 "can't purge negative records\n");
4098 id = strtol(idstr + strlen(CHANGELOG_USER_PREFIX), NULL, 10);
4099 if ((id == 0) || (strncmp(idstr, CHANGELOG_USER_PREFIX,
4100 strlen(CHANGELOG_USER_PREFIX)) != 0)) {
4101 llapi_err_noerrno(LLAPI_MSG_ERROR,
4102 "expecting id of the form '"
4103 CHANGELOG_USER_PREFIX
4104 "<num>'; got '%s'\n", idstr);
4108 return changelog_ioctl(mdtname, OBD_IOC_CHANGELOG_CLEAR, id, endrec, 0);
4111 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4112 int buflen, long long *recno, int *linkno)
4115 struct getinfo_fid2path *gf;
4118 while (*fidstr == '[')
4121 sscanf(fidstr, SFID, RFID(&fid));
4122 if (!fid_is_sane(&fid)) {
4123 llapi_err_noerrno(LLAPI_MSG_ERROR,
4124 "bad FID format [%s], should be "DFID"\n",
4125 fidstr, (__u64)1, 2, 0);
4129 gf = malloc(sizeof(*gf) + buflen);
4133 gf->gf_recno = *recno;
4134 gf->gf_linkno = *linkno;
4135 gf->gf_pathlen = buflen;
4137 /* Take path or fsname */
4138 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4141 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl err %d", rc);
4143 memcpy(buf, gf->gf_path, gf->gf_pathlen);
4144 *recno = gf->gf_recno;
4145 *linkno = gf->gf_linkno;
4152 static int fid_from_lma(const char *path, const int fd, lustre_fid *fid)
4155 struct lustre_mdt_attrs *lma;
4159 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4161 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4164 lma = (struct lustre_mdt_attrs *)buf;
4165 fid_le_to_cpu(fid, &lma->lma_self_fid);
4169 int llapi_fd2fid(const int fd, lustre_fid *fid)
4173 memset(fid, 0, sizeof(*fid));
4175 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4176 if (rc == -EINVAL || rc == -ENOTTY)
4177 rc = fid_from_lma(NULL, fd, fid);
4182 int llapi_path2fid(const char *path, lustre_fid *fid)
4186 memset(fid, 0, sizeof(*fid));
4187 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4189 if (errno == ELOOP || errno == ENXIO)
4190 return fid_from_lma(path, -1, fid);
4194 rc = llapi_fd2fid(fd, fid);
4195 if (rc == -EINVAL || rc == -ENOTTY)
4196 rc = fid_from_lma(path, -1, fid);
4202 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4207 root = opendir(mnt);
4210 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4214 rc = ioctl(dirfd(root), LL_IOC_GET_CONNECT_FLAGS, flags);
4217 llapi_error(LLAPI_MSG_ERROR, rc,
4218 "ioctl on %s for getting connect flags failed", mnt);
4224 int llapi_get_version(char *buffer, int buffer_size,
4229 struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
4231 fd = open(OBD_DEV_PATH, O_RDONLY);
4235 memset(buffer, 0, buffer_size);
4236 data->ioc_version = OBD_IOCTL_VERSION;
4237 data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
4238 data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
4239 data->ioc_len = obd_ioctl_packlen(data);
4241 rc = ioctl(fd, OBD_GET_VERSION, buffer);
4248 *version = data->ioc_bulk;
4253 * Get a 64-bit value representing the version of file data pointed by fd.
4255 * Each write or truncate, flushed on OST, will change this value. You can use
4256 * this value to verify if file data was modified. This only checks the file
4257 * data, not metadata.
4259 * \param flags 0: no flush pages, usually used it the process has already
4261 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4263 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4264 * pages from clients.
4266 * \retval 0 on success.
4267 * \retval -errno on error.
4269 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4272 struct ioc_data_version idv;
4274 idv.idv_flags = flags;
4276 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4280 *data_version = idv.idv_version;
4286 * Create a volatile file and open it for write:
4287 * - file is created as a standard file in the directory
4288 * - file does not appears in directory and directory mtime does not change
4289 * - file is removed at close
4290 * - file modes are rw-------, if user wants another one it must use fchmod()
4291 * \param directory Directory where the file is created
4292 * \param idx MDT index on which the file is created
4293 * \param flags Std open flags
4295 * \retval 0 on success.
4296 * \retval -errno on error.
4298 int llapi_create_volatile_idx(char *directory, int idx, int mode)
4300 char file_path[PATH_MAX];
4301 char filename[PATH_MAX];
4306 fd = open("/dev/urandom", O_RDONLY);
4308 llapi_error(LLAPI_MSG_ERROR, errno,
4309 "Cannot open /dev/urandom\n");
4312 rc = read(fd, &random, sizeof(random));
4314 if (rc < sizeof(random)) {
4315 llapi_error(LLAPI_MSG_ERROR, errno,
4316 "cannot read %zu bytes from /dev/urandom",
4321 snprintf(filename, sizeof(filename),
4322 LUSTRE_VOLATILE_HDR"::%.4X", random);
4324 snprintf(filename, sizeof(filename),
4325 LUSTRE_VOLATILE_IDX"%.4X", 0, random);
4327 rc = snprintf(file_path, sizeof(file_path),
4328 "%s/%s", directory, filename);
4329 if (rc >= sizeof(file_path))
4332 fd = open(file_path, (O_RDWR | O_CREAT | mode), (S_IRUSR | S_IWUSR));
4334 llapi_error(LLAPI_MSG_ERROR, errno,
4335 "Cannot create volatile file %s in %s\n",
4336 filename + LUSTRE_VOLATILE_HDR_LEN,
4344 * Swap the layouts between 2 file descriptors
4345 * the 2 files must be open in write
4346 * first fd received the ioctl, second fd is passed as arg
4347 * this is assymetric but avoid use of root path for ioctl
4349 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4351 struct lustre_swap_layouts lsl;
4354 srandom(time(NULL));
4356 lsl.sl_flags = flags;
4357 lsl.sl_gid = random();
4360 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4367 * Swap the layouts between 2 files
4368 * the 2 files are open in write
4370 int llapi_swap_layouts(const char *path1, const char *path2,
4371 __u64 dv1, __u64 dv2, __u64 flags)
4375 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4377 llapi_error(LLAPI_MSG_ERROR, -errno,
4378 "error: cannot open for write %s",
4383 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4385 llapi_error(LLAPI_MSG_ERROR, -errno,
4386 "error: cannot open for write %s",
4392 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4394 llapi_error(LLAPI_MSG_ERROR, rc,
4395 "error: cannot swap layouts between %s and %s\n",