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>
53 #include <sys/ioctl.h>
60 #include <sys/statfs.h>
61 #include <sys/types.h>
62 #include <sys/syscall.h>
63 #include <sys/xattr.h>
66 #include <libgen.h> /* for dirname() */
67 #ifdef HAVE_LINUX_UNISTD_H
68 #include <linux/unistd.h>
74 #include <libcfs/libcfs.h>
75 #include <lnet/lnetctl.h>
76 #include <lustre/lustreapi.h>
77 #include <lustre_ioctl.h>
78 #include "lustreapi_internal.h"
80 static int llapi_msg_level = LLAPI_MSG_MAX;
82 void llapi_msg_set_level(int level)
84 /* ensure level is in the good range */
85 if (level < LLAPI_MSG_OFF)
86 llapi_msg_level = LLAPI_MSG_OFF;
87 else if (level > LLAPI_MSG_MAX)
88 llapi_msg_level = LLAPI_MSG_MAX;
90 llapi_msg_level = level;
93 int llapi_msg_get_level(void)
95 return llapi_msg_level;
98 static void error_callback_default(enum llapi_message_level level, int err,
99 const char *fmt, va_list ap)
101 vfprintf(stderr, fmt, ap);
102 if (level & LLAPI_MSG_NO_ERRNO)
103 fprintf(stderr, "\n");
105 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
108 static void info_callback_default(enum llapi_message_level level, int err,
109 const char *fmt, va_list ap)
111 vfprintf(stdout, fmt, ap);
114 static llapi_log_callback_t llapi_error_callback = error_callback_default;
115 static llapi_log_callback_t llapi_info_callback = info_callback_default;
118 /* llapi_error will preserve errno */
119 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
122 int tmp_errno = errno;
124 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
128 llapi_error_callback(level, abs(err), fmt, args);
133 /* llapi_printf will preserve errno */
134 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
137 int tmp_errno = errno;
139 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
143 llapi_info_callback(level, 0, fmt, args);
149 * Set a custom error logging function. Passing in NULL will reset the logging
150 * callback to its default value.
152 * This function returns the value of the old callback.
154 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
156 llapi_log_callback_t old = llapi_error_callback;
159 llapi_error_callback = cb;
161 llapi_error_callback = error_callback_default;
167 * Set a custom info logging function. Passing in NULL will reset the logging
168 * callback to its default value.
170 * This function returns the value of the old callback.
172 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
174 llapi_log_callback_t old = llapi_info_callback;
177 llapi_info_callback = cb;
179 llapi_info_callback = info_callback_default;
185 * size_units is to be initialized (or zeroed) by caller.
187 int llapi_parse_size(const char *optarg, unsigned long long *size,
188 unsigned long long *size_units, int bytes_spec)
192 if (strncmp(optarg, "-", 1) == 0)
195 if (*size_units == 0)
198 *size = strtoull(optarg, &end, 0);
201 if ((*end == 'b') && *(end + 1) == '\0' &&
202 (*size & (~0ULL << (64 - 9))) == 0 &&
204 *size_units = 1 << 9;
205 } else if ((*end == 'b') &&
206 *(end + 1) == '\0' &&
209 } else if ((*end == 'k' || *end == 'K') &&
210 *(end + 1) == '\0' &&
211 (*size & (~0ULL << (64 - 10))) == 0) {
212 *size_units = 1 << 10;
213 } else if ((*end == 'm' || *end == 'M') &&
214 *(end + 1) == '\0' &&
215 (*size & (~0ULL << (64 - 20))) == 0) {
216 *size_units = 1 << 20;
217 } else if ((*end == 'g' || *end == 'G') &&
218 *(end + 1) == '\0' &&
219 (*size & (~0ULL << (64 - 30))) == 0) {
220 *size_units = 1 << 30;
221 } else if ((*end == 't' || *end == 'T') &&
222 *(end + 1) == '\0' &&
223 (*size & (~0ULL << (64 - 40))) == 0) {
224 *size_units = 1ULL << 40;
225 } else if ((*end == 'p' || *end == 'P') &&
226 *(end + 1) == '\0' &&
227 (*size & (~0ULL << (64 - 50))) == 0) {
228 *size_units = 1ULL << 50;
229 } else if ((*end == 'e' || *end == 'E') &&
230 *(end + 1) == '\0' &&
231 (*size & (~0ULL << (64 - 60))) == 0) {
232 *size_units = 1ULL << 60;
237 *size *= *size_units;
241 /* XXX: llapi_xxx() functions return negative values upon failure */
243 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
244 int stripe_count, int stripe_pattern)
248 /* 64 KB is the largest common page size I'm aware of (on ia64), but
249 * check the local page size just in case. */
250 page_size = LOV_MIN_STRIPE_SIZE;
251 if (getpagesize() > page_size) {
252 page_size = getpagesize();
253 llapi_err_noerrno(LLAPI_MSG_WARN,
254 "warning: your page size (%u) is "
255 "larger than expected (%u)", page_size,
256 LOV_MIN_STRIPE_SIZE);
258 if (!llapi_stripe_size_is_aligned(stripe_size)) {
260 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
261 "must be an even multiple of %d bytes",
262 stripe_size, page_size);
265 if (!llapi_stripe_offset_is_valid(stripe_offset)) {
267 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
271 if (!llapi_stripe_count_is_valid(stripe_count)) {
273 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
277 if (llapi_stripe_size_is_too_big(stripe_size)) {
279 llapi_error(LLAPI_MSG_ERROR, rc,
280 "warning: stripe size 4G or larger "
281 "is not currently supported and would wrap");
287 /* return the first file matching this pattern */
288 static int first_match(char *pattern, char *buffer)
292 if (glob(pattern, GLOB_BRACE, NULL, &glob_info))
295 if (glob_info.gl_pathc < 1) {
296 globfree(&glob_info);
300 strcpy(buffer, glob_info.gl_pathv[0]);
302 globfree(&glob_info);
306 static int find_target_obdpath(char *fsname, char *path)
309 char pattern[PATH_MAX + 1];
312 snprintf(pattern, PATH_MAX,
313 "/proc/fs/lustre/lov/%s-*/target_obd",
315 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
316 if (rc == GLOB_NOMATCH)
321 strcpy(path, glob_info.gl_pathv[0]);
322 globfree(&glob_info);
326 static int find_poolpath(char *fsname, char *poolname, char *poolpath)
329 char pattern[PATH_MAX + 1];
332 snprintf(pattern, PATH_MAX,
333 "/proc/fs/lustre/lov/%s-*/pools/%s",
335 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
336 /* If no pools, make sure the lov is available */
337 if ((rc == GLOB_NOMATCH) &&
338 (find_target_obdpath(fsname, poolpath) == -ENODEV))
343 strcpy(poolpath, glob_info.gl_pathv[0]);
344 globfree(&glob_info);
349 * Trim a trailing newline from a string, if it exists.
351 int llapi_chomp_string(char *buf)
367 * return a parameter string for a specific device type or mountpoint
369 * \param param_path the path to the file containing parameter data
370 * \param result buffer for parameter value string
371 * \param result_size size of buffer for return value
373 * The \param param_path is appended to /proc/{fs,sys}/{lnet,lustre} to
374 * complete the absolute path to the file containing the parameter data
375 * the user is requesting. If that file exist then the data is read from
376 * the file and placed into the \param result buffer that is passed by
377 * the user. Data is only copied up to the \param result_size to prevent
378 * overflow of the array.
380 * Return 0 for success, with a NUL-terminated string in \param result.
381 * Return -ve value for error.
383 int get_param(const char *param_path, char *result,
384 unsigned int result_size)
386 char file[PATH_MAX + 1], pattern[PATH_MAX + 1], buf[result_size];
390 snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
392 rc = first_match(pattern, file);
393 if (rc != 0 || result == NULL)
396 fp = fopen(file, "r");
398 while (fgets(buf, result_size, fp) != NULL)
407 #define DEVICES_LIST "/proc/fs/lustre/devices"
410 * return a parameter string for a specific device type or mountpoint
412 * \param fsname Lustre filesystem name (optional)
413 * \param file_path path to file in filesystem (optional, if fsname unset)
414 * \param obd_type Lustre OBD device type
415 * \param param_name parameter name to fetch
416 * \param value return buffer for parameter value string
417 * \param val_len size of buffer for return value
419 * If fsname is specified then the parameter will be from that filesystem
420 * (if it exists). If file_path is given and it is in a mounted Lustre
421 * filesystem, then the parameter will be otherwise the value may be
422 * from any mounted filesystem (if there is more than one).
424 * If "obd_type" matches a Lustre device then the first matching device
425 * (as with "lctl dl", constrained by \param fsname or \param mount_path)
426 * will be used to provide the return value, otherwise the first such
427 * device found will be used.
429 * Return 0 for success, with a NUL-terminated string in \param buffer.
430 * Return -ve value for error.
432 static int get_param_obdvar(const char *fsname, const char *file_path,
433 const char *obd_type, const char *param_name,
434 char *value, unsigned int val_len)
436 char devices[PATH_MAX];
437 char dev[PATH_MAX] = "*";
442 fp = fopen(DEVICES_LIST, "r");
445 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
449 if (fsname == NULL && file_path != NULL) {
450 rc = llapi_search_fsname(file_path, fs);
452 llapi_error(LLAPI_MSG_ERROR, rc,
453 "'%s' is not on a Lustre filesystem",
457 } else if (fsname != NULL) {
458 rc = strlcpy(fs, fsname, sizeof(fs));
459 if (rc >= sizeof(fs)) {
465 while (fgets(devices, sizeof(devices) - 1, fp) != NULL) {
466 char *bufp = devices, *tmp;
468 devices[sizeof(devices) - 1] = '\0';
469 while (bufp[0] == ' ')
472 tmp = strstr(bufp, obd_type);
474 tmp += strlen(obd_type) + 1;
477 rc = strlcpy(dev, tmp, sizeof(dev));
478 if (rc >= sizeof(dev)) {
483 tmp = strchr(dev, ' ');
490 if (dev[0] == '*' && strlen(fs)) {
491 rc = snprintf(dev, sizeof(dev), "%s-*", fs);
492 if (rc >= sizeof(dev)) {
497 rc = snprintf(devices, sizeof(devices), "%s/%s/%s", obd_type, dev,
499 if (rc >= sizeof(devices)) {
505 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));
603 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
605 return get_param_lmv(path, "uuid", buf, bufsize);
609 * if pool is NULL, search ostname in target_obd
610 * if pool is not NULL:
611 * if pool not found returns errno < 0
612 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
613 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
615 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
618 char buffer[PATH_MAX + 1];
622 len = strlen(ostname);
624 if (poolname == NULL) {
628 rc = find_target_obdpath(fsname, buffer);
630 rc = find_poolpath(fsname, poolname, buffer);
635 fd = fopen(buffer, "r");
639 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
640 if (poolname == NULL) {
642 /* Search for an ostname in the list of OSTs
643 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
644 ptr = strchr(buffer, ' ');
646 (strncmp(ptr + 1, ostname, len) == 0)) {
651 /* Search for an ostname in a pool,
652 (or an existing non-empty pool if no ostname) */
653 if ((ostname == NULL) ||
654 (strncmp(buffer, ostname, len) == 0)) {
665 * Open a Lustre file.
667 * \param name the name of the file to be opened
668 * \param flags access mode, see flags in open(2)
669 * \param mode permisson of the file if it is created, see mode in open(2)
670 * \param param stripe pattern of the newly created file
672 * \return file descriptor of opened file
673 * \return -error failure
675 int llapi_file_open_param(const char *name, int flags, mode_t mode,
676 const struct llapi_stripe_param *param)
678 char fsname[MAX_OBD_NAME + 1] = { 0 };
679 char *pool_name = param->lsp_pool;
680 struct lov_user_md *lum = NULL;
681 size_t lum_size = sizeof(*lum);
684 /* Make sure we are on a Lustre file system */
685 rc = llapi_search_fsname(name, fsname);
687 llapi_error(LLAPI_MSG_ERROR, rc,
688 "'%s' is not on a Lustre filesystem",
693 /* Check if the stripe pattern is sane. */
694 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
695 param->lsp_stripe_offset,
696 param->lsp_stripe_count,
697 param->lsp_stripe_pattern);
701 /* Make sure we have a good pool */
702 if (pool_name != NULL) {
703 /* in case user gives the full pool name <fsname>.<poolname>,
704 * strip the fsname */
705 char *ptr = strchr(pool_name, '.');
708 if (strcmp(pool_name, fsname) != 0) {
710 llapi_err_noerrno(LLAPI_MSG_ERROR,
711 "Pool '%s' is not on filesystem '%s'",
718 /* Make sure the pool exists and is non-empty */
719 rc = llapi_search_ost(fsname, pool_name, NULL);
721 char *err = rc == 0 ? "has no OSTs" : "does not exist";
723 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
724 fsname, pool_name, err);
728 lum_size = sizeof(struct lov_user_md_v3);
731 /* sanity check of target list */
732 if (param->lsp_is_specific) {
733 char ostname[MAX_OBD_NAME + 1];
737 for (i = 0; i < param->lsp_stripe_count; i++) {
738 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
739 fsname, param->lsp_osts[i]);
740 rc = llapi_search_ost(fsname, pool_name, ostname);
745 llapi_error(LLAPI_MSG_ERROR, rc,
746 "%s: cannot find OST %s in %s",
753 /* Make sure stripe offset is in OST list. */
754 if (param->lsp_osts[i] == param->lsp_stripe_offset)
758 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
759 "%s: stripe offset '%d' is not in the "
761 __func__, param->lsp_stripe_offset);
765 lum_size = lov_user_md_size(param->lsp_stripe_count,
766 LOV_USER_MAGIC_SPECIFIC);
769 lum = calloc(1, lum_size);
774 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
776 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
777 flags = O_DIRECTORY | O_RDONLY;
784 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
789 /* Initialize IOCTL striping pattern structure */
790 lum->lmm_magic = LOV_USER_MAGIC_V1;
791 lum->lmm_pattern = param->lsp_stripe_pattern;
792 lum->lmm_stripe_size = param->lsp_stripe_size;
793 lum->lmm_stripe_count = param->lsp_stripe_count;
794 lum->lmm_stripe_offset = param->lsp_stripe_offset;
795 if (pool_name != NULL) {
796 struct lov_user_md_v3 *lumv3 = (void *)lum;
798 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
799 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
801 if (param->lsp_is_specific) {
802 struct lov_user_md_v3 *lumv3 = (void *)lum;
805 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
806 if (pool_name == NULL) {
807 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
808 * OST list, therefore if pool is not specified we have
809 * to pack a null pool name for placeholder. */
810 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
813 for (i = 0; i < param->lsp_stripe_count; i++)
814 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
817 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
818 char *errmsg = "stripe already set";
821 if (errno != EEXIST && errno != EALREADY)
822 errmsg = strerror(errno);
824 llapi_err_noerrno(LLAPI_MSG_ERROR,
825 "error on ioctl "LPX64" for '%s' (%d): %s",
826 (__u64)LL_IOC_LOV_SETSTRIPE, name, fd,
839 int llapi_file_open_pool(const char *name, int flags, int mode,
840 unsigned long long stripe_size, int stripe_offset,
841 int stripe_count, int stripe_pattern, char *pool_name)
843 const struct llapi_stripe_param param = {
844 .lsp_stripe_size = stripe_size,
845 .lsp_stripe_count = stripe_count,
846 .lsp_stripe_pattern = stripe_pattern,
847 .lsp_stripe_offset = stripe_offset,
848 .lsp_pool = pool_name
850 return llapi_file_open_param(name, flags, mode, ¶m);
853 int llapi_file_open(const char *name, int flags, int mode,
854 unsigned long long stripe_size, int stripe_offset,
855 int stripe_count, int stripe_pattern)
857 return llapi_file_open_pool(name, flags, mode, stripe_size,
858 stripe_offset, stripe_count,
859 stripe_pattern, NULL);
862 int llapi_file_create(const char *name, unsigned long long stripe_size,
863 int stripe_offset, int stripe_count, int stripe_pattern)
867 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
868 stripe_offset, stripe_count, stripe_pattern,
877 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
878 int stripe_offset, int stripe_count,
879 int stripe_pattern, char *pool_name)
883 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
884 stripe_offset, stripe_count, stripe_pattern,
893 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
894 int stripe_count, int stripe_pattern,
895 const char *pool_name)
897 struct lmv_user_md lum = { 0 };
901 lum.lum_magic = LMV_USER_MAGIC;
902 lum.lum_stripe_offset = stripe_offset;
903 lum.lum_stripe_count = stripe_count;
904 lum.lum_hash_type = stripe_pattern;
905 if (pool_name != NULL) {
906 if (strlen(pool_name) >= sizeof(lum.lum_pool_name)) {
907 llapi_err_noerrno(LLAPI_MSG_ERROR,
908 "error LL_IOC_LMV_SET_DEFAULT_STRIPE '%s'"
909 ": too large pool name: %s", name, pool_name);
912 strncpy(lum.lum_pool_name, pool_name,
913 sizeof(lum.lum_pool_name));
916 fd = open(name, O_DIRECTORY | O_RDONLY);
919 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
923 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lum);
925 char *errmsg = "stripe already set";
927 if (errno != EEXIST && errno != EALREADY)
928 errmsg = strerror(errno);
930 llapi_err_noerrno(LLAPI_MSG_ERROR,
931 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
938 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
939 int stripe_count, int stripe_pattern,
940 const char *pool_name)
942 struct lmv_user_md lmu = { 0 };
943 struct obd_ioctl_data data = { 0 };
946 char *dirpath = NULL;
947 char *namepath = NULL;
953 dirpath = strdup(name);
954 namepath = strdup(name);
955 if (!dirpath || !namepath)
958 lmu.lum_magic = LMV_USER_MAGIC;
959 lmu.lum_stripe_offset = stripe_offset;
960 lmu.lum_stripe_count = stripe_count;
961 lmu.lum_hash_type = stripe_pattern;
962 if (pool_name != NULL) {
963 if (strlen(pool_name) > LOV_MAXPOOLNAME) {
964 llapi_err_noerrno(LLAPI_MSG_ERROR,
965 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
966 "pool name: %s", name, pool_name);
970 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
973 filename = basename(namepath);
974 dir = dirname(dirpath);
976 data.ioc_inlbuf1 = (char *)filename;
977 data.ioc_inllen1 = strlen(filename) + 1;
978 data.ioc_inlbuf2 = (char *)&lmu;
979 data.ioc_inllen2 = sizeof(struct lmv_user_md);
980 data.ioc_type = mode;
981 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
983 llapi_error(LLAPI_MSG_ERROR, rc,
984 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
989 fd = open(dir, O_DIRECTORY | O_RDONLY);
992 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
996 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
997 char *errmsg = "stripe already set";
999 if (errno != EEXIST && errno != EALREADY)
1000 errmsg = strerror(errno);
1002 llapi_err_noerrno(LLAPI_MSG_ERROR,
1003 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1013 int llapi_direntry_remove(char *dname)
1015 char *dirpath = NULL;
1016 char *namepath = NULL;
1022 dirpath = strdup(dname);
1023 namepath = strdup(dname);
1024 if (!dirpath || !namepath)
1027 filename = basename(namepath);
1029 dir = dirname(dirpath);
1031 fd = open(dir, O_DIRECTORY | O_RDONLY);
1034 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1039 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1040 char *errmsg = strerror(errno);
1041 llapi_err_noerrno(LLAPI_MSG_ERROR,
1042 "error on ioctl "LPX64" for '%s' (%d): %s",
1043 (__u64)LL_IOC_LMV_SETSTRIPE, filename,
1055 * Find the fsname, the full path, and/or an open fd.
1056 * Either the fsname or path must not be NULL
1058 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1061 char buf[PATH_MAX], mntdir[PATH_MAX];
1064 int idx = 0, len = 0, mntlen, fd;
1067 /* get the mount point */
1068 fp = setmntent(MOUNTED, "r");
1071 llapi_error(LLAPI_MSG_ERROR, rc,
1072 "setmntent(%s) failed", MOUNTED);
1076 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1079 if (!llapi_is_lustre_mnt(&mnt))
1082 if ((want & WANT_INDEX) && (idx++ != index))
1085 mntlen = strlen(mnt.mnt_dir);
1086 ptr = strrchr(mnt.mnt_fsname, '/');
1087 /* thanks to the call to llapi_is_lustre_mnt() above,
1088 * we are sure that mnt.mnt_fsname contains ":/",
1089 * so ptr should never be NULL */
1094 /* Check the fsname for a match, if given */
1095 if (!(want & WANT_FSNAME) && fsname != NULL &&
1096 (strlen(fsname) > 0) && (strcmp(ptr, fsname) != 0))
1099 /* If the path isn't set return the first one we find */
1100 if (path == NULL || strlen(path) == 0) {
1101 strcpy(mntdir, mnt.mnt_dir);
1102 if ((want & WANT_FSNAME) && fsname != NULL)
1103 strcpy(fsname, ptr);
1106 /* Otherwise find the longest matching path */
1107 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1108 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1109 strcpy(mntdir, mnt.mnt_dir);
1111 if ((want & WANT_FSNAME) && fsname != NULL)
1112 strcpy(fsname, ptr);
1120 if ((want & WANT_PATH) && path != NULL)
1121 strcpy(path, mntdir);
1122 if (want & WANT_FD) {
1123 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1126 llapi_error(LLAPI_MSG_ERROR, rc,
1127 "error opening '%s'", mntdir);
1133 } else if (want & WANT_ERROR)
1134 llapi_err_noerrno(LLAPI_MSG_ERROR,
1135 "can't find fs root for '%s': %d",
1136 (want & WANT_PATH) ? fsname : path, rc);
1141 * search lustre mounts
1143 * Calling this function will return to the user the mount point, mntdir, and
1144 * the file system name, fsname, if the user passed a buffer to this routine.
1146 * The user inputs are pathname and index. If the pathname is supplied then
1147 * the value of the index will be ignored. The pathname will return data if
1148 * the pathname is located on a lustre mount. Index is used to pick which
1149 * mount point you want in the case of multiple mounted lustre file systems.
1150 * See function lfs_osts in lfs.c for a example of the index use.
1152 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1155 int want = WANT_PATH, idx = -1;
1157 if (!pathname || pathname[0] == '\0') {
1161 strcpy(mntdir, pathname);
1164 want |= WANT_FSNAME;
1165 return get_root_path(want, fsname, NULL, mntdir, idx);
1168 /* Given a path, find the corresponding Lustre fsname */
1169 int llapi_search_fsname(const char *pathname, char *fsname)
1174 path = realpath(pathname, NULL);
1176 char buf[PATH_MAX], *ptr;
1179 if (pathname[0] != '/') {
1180 /* Need an absolute path, but realpath() only works for
1181 * pathnames that actually exist. We go through the
1182 * extra hurdle of dirname(getcwd() + pathname) in
1183 * case the relative pathname contains ".." in it. */
1184 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1186 rc = strlcat(buf, "/", sizeof(buf));
1187 if (rc >= sizeof(buf))
1190 rc = strlcat(buf, pathname, sizeof(buf));
1191 if (rc >= sizeof(buf))
1193 path = realpath(buf, NULL);
1195 ptr = strrchr(buf, '/');
1199 path = realpath(buf, NULL);
1202 llapi_error(LLAPI_MSG_ERROR, rc,
1203 "pathname '%s' cannot expand",
1209 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1214 int llapi_search_rootpath(char *pathname, const char *fsname)
1216 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1219 int llapi_getname(const char *path, char *buf, size_t size)
1221 struct obd_uuid uuid_buf;
1222 char *uuid = uuid_buf.uuid;
1225 memset(&uuid_buf, 0, sizeof(uuid_buf));
1226 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1230 /* We want to turn lustre-clilov-ffff88002738bc00 into
1231 * lustre-ffff88002738bc00. */
1233 nr = snprintf(buf, size, "%.*s-%s",
1234 (int) (strlen(uuid) - 24), uuid,
1235 uuid + strlen(uuid) - 16);
1245 * find the pool directory path under /proc
1246 * (can be also used to test if a fsname is known)
1248 static int poolpath(char *fsname, char *pathname, char *pool_pathname)
1251 char pattern[PATH_MAX + 1];
1252 char buffer[PATH_MAX];
1254 if (fsname == NULL) {
1255 rc = llapi_search_fsname(pathname, buffer);
1259 strcpy(pathname, fsname);
1262 snprintf(pattern, PATH_MAX, "/proc/fs/lustre/lov/%s-*/pools", fsname);
1263 rc = first_match(pattern, buffer);
1267 /* in fsname test mode, pool_pathname is NULL */
1268 if (pool_pathname != NULL)
1269 strcpy(pool_pathname, buffer);
1275 * Get the list of pool members.
1276 * \param poolname string of format \<fsname\>.\<poolname\>
1277 * \param members caller-allocated array of char*
1278 * \param list_size size of the members array
1279 * \param buffer caller-allocated buffer for storing OST names
1280 * \param buffer_size size of the buffer
1282 * \return number of members retrieved for this pool
1283 * \retval -error failure
1285 int llapi_get_poolmembers(const char *poolname, char **members,
1286 int list_size, char *buffer, int buffer_size)
1288 char fsname[PATH_MAX];
1290 char pathname[PATH_MAX];
1291 char path[PATH_MAX];
1298 /* name is FSNAME.POOLNAME */
1299 if (strlen(poolname) >= sizeof(fsname))
1301 strlcpy(fsname, poolname, sizeof(fsname));
1302 pool = strchr(fsname, '.');
1309 rc = poolpath(fsname, NULL, pathname);
1311 llapi_error(LLAPI_MSG_ERROR, rc,
1312 "Lustre filesystem '%s' not found",
1317 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1318 rc = snprintf(path, sizeof(path), "%s/%s", pathname, pool);
1319 if (rc >= sizeof(path))
1321 fd = fopen(path, "r");
1324 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open %s", path);
1329 while (fgets(buf, sizeof(buf), fd) != NULL) {
1330 if (nb_entries >= list_size) {
1334 buf[sizeof(buf) - 1] = '\0';
1336 tmp = strchr(buf, '\n');
1339 if (used + strlen(buf) + 1 > buffer_size) {
1344 strcpy(buffer + used, buf);
1345 members[nb_entries] = buffer + used;
1346 used += strlen(buf) + 1;
1356 * Get the list of pools in a filesystem.
1357 * \param name filesystem name or path
1358 * \param poollist caller-allocated array of char*
1359 * \param list_size size of the poollist array
1360 * \param buffer caller-allocated buffer for storing pool names
1361 * \param buffer_size size of the buffer
1363 * \return number of pools retrieved for this filesystem
1364 * \retval -error failure
1366 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1367 char *buffer, int buffer_size)
1369 char fsname[PATH_MAX + 1], rname[PATH_MAX + 1], pathname[PATH_MAX + 1];
1373 struct dirent *cookie = NULL;
1375 unsigned int nb_entries = 0;
1376 unsigned int used = 0;
1379 /* initilize output array */
1380 for (i = 0; i < list_size; i++)
1383 /* is name a pathname ? */
1384 ptr = strchr(name, '/');
1386 /* only absolute pathname is supported */
1390 if (!realpath(name, rname)) {
1392 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1397 rc = poolpath(NULL, rname, pathname);
1399 llapi_error(LLAPI_MSG_ERROR, rc, "'%s' is not"
1400 " a Lustre filesystem", name);
1403 if (strlen(rname) > sizeof(fsname)-1)
1405 strncpy(fsname, rname, sizeof(fsname));
1407 /* name is FSNAME */
1408 if (strlen(name) > sizeof(fsname)-1)
1410 strncpy(fsname, name, sizeof(fsname));
1411 rc = poolpath(fsname, NULL, pathname);
1414 llapi_error(LLAPI_MSG_ERROR, rc,
1415 "Lustre filesystem '%s' not found", name);
1419 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1420 dir = opendir(pathname);
1423 llapi_error(LLAPI_MSG_ERROR, rc,
1424 "Could not open pool list for '%s'",
1430 rc = readdir_r(dir, &pool, &cookie);
1434 llapi_error(LLAPI_MSG_ERROR, rc,
1435 "Error reading pool list for '%s'", name);
1437 } else if ((rc == 0) && (cookie == NULL)) {
1438 /* end of directory */
1442 /* ignore . and .. */
1443 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1446 /* check output bounds */
1447 if (nb_entries >= list_size) {
1452 /* +2 for '.' and final '\0' */
1453 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1459 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1460 poollist[nb_entries] = buffer + used;
1461 used += strlen(pool.d_name) + strlen(fsname) + 2;
1467 return ((rc != 0) ? rc : nb_entries);
1470 /* wrapper for lfs.c and obd.c */
1471 int llapi_poollist(const char *name)
1473 /* list of pool names (assume that pool count is smaller
1475 char **list, *buffer = NULL, *path = NULL, *fsname = NULL;
1476 int obdcount, bufsize, rc, nb, i;
1477 char *poolname = NULL, *tmp = NULL, data[16];
1482 if (name[0] != '/') {
1483 fsname = strdup(name);
1487 poolname = strchr(fsname, '.');
1491 path = (char *) name;
1494 rc = get_param_obdvar(fsname, path, "lov", "numobd",
1495 data, sizeof(data));
1498 obdcount = atoi(data);
1500 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1501 * and also an array to store the pointers for all that
1502 * allocated space. */
1504 bufsize = sizeof(struct obd_uuid) * obdcount;
1505 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1506 if (buffer == NULL) {
1510 list = (char **) (buffer + bufsize);
1513 /* name is a path or fsname */
1514 nb = llapi_get_poollist(name, list, obdcount,
1517 /* name is a pool name (<fsname>.<poolname>) */
1518 nb = llapi_get_poolmembers(name, list, obdcount,
1522 if (nb == -EOVERFLOW) {
1525 goto retry_get_pools;
1528 for (i = 0; i < nb; i++)
1529 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1530 rc = (nb < 0 ? nb : 0);
1539 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1540 void *data, struct dirent64 *de);
1542 #define OBD_NOT_FOUND (-1)
1544 static int common_param_init(struct find_param *param, char *path)
1546 int lumlen = get_mds_md_size(path);
1548 if (lumlen < PATH_MAX + 1)
1549 lumlen = PATH_MAX + 1;
1551 param->lumlen = lumlen;
1552 param->lmd = malloc(sizeof(lstat_t) + param->lumlen);
1553 if (param->lmd == NULL) {
1554 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1555 "error: allocation of %zu bytes for ioctl",
1556 sizeof(lstat_t) + param->lumlen);
1560 param->fp_lmv_count = 256;
1561 param->fp_lmv_md = malloc(lmv_user_md_size(256, LMV_MAGIC_V1));
1562 if (param->fp_lmv_md == NULL) {
1563 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1564 "error: allocation of %d bytes for ioctl",
1565 lmv_user_md_size(256, LMV_MAGIC_V1));
1569 param->got_uuids = 0;
1570 param->obdindexes = NULL;
1571 param->obdindex = OBD_NOT_FOUND;
1572 if (!param->migrate)
1573 param->mdtindex = OBD_NOT_FOUND;
1577 static void find_param_fini(struct find_param *param)
1579 if (param->obdindexes)
1580 free(param->obdindexes);
1585 if (param->fp_lmv_md)
1586 free(param->fp_lmv_md);
1589 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1590 struct dirent64 *de)
1592 struct find_param *param = data;
1598 /* set errno upon failure */
1599 static DIR *opendir_parent(char *path)
1605 fname = strrchr(path, '/');
1607 return opendir(".");
1611 parent = opendir(path);
1616 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1618 struct lmv_user_md *lmv = (struct lmv_user_md *)param->fp_lmv_md;
1621 lmv->lum_stripe_count = param->fp_lmv_count;
1622 if (param->get_default_lmv)
1623 lmv->lum_magic = LMV_USER_MAGIC;
1625 lmv->lum_magic = LMV_MAGIC_V1;
1626 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, lmv);
1631 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1632 struct lov_user_mds_data *lmd, int lumlen)
1634 lstat_t *st = &lmd->lmd_st;
1637 if (parent == NULL && dir == NULL)
1641 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1642 } else if (parent) {
1643 char *fname = strrchr(path, '/');
1645 fname = (fname == NULL ? path : fname + 1);
1646 /* retrieve needed file info */
1647 strlcpy((char *)lmd, fname, lumlen);
1648 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1652 if (errno == ENOTTY) {
1653 /* ioctl is not supported, it is not a lustre fs.
1654 * Do the regular lstat(2) instead. */
1655 ret = lstat_f(path, st);
1658 llapi_error(LLAPI_MSG_ERROR, ret,
1659 "error: %s: lstat failed for %s",
1662 } else if (errno == ENOENT) {
1664 llapi_error(LLAPI_MSG_WARN, ret,
1665 "warning: %s: %s does not exist",
1667 } else if (errno != EISDIR) {
1669 llapi_error(LLAPI_MSG_ERROR, ret,
1670 "%s ioctl failed for %s.",
1671 dir ? "LL_IOC_MDC_GETINFO" :
1672 "IOC_MDC_GETFILEINFO", path);
1675 llapi_error(LLAPI_MSG_ERROR, ret,
1676 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1683 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1684 semantic_func_t sem_init,
1685 semantic_func_t sem_fini, void *data,
1686 struct dirent64 *de)
1688 struct find_param *param = (struct find_param *)data;
1689 struct dirent64 *dent;
1697 if (!d && errno != ENOTDIR) {
1699 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1702 } else if (!d && !parent) {
1703 /* ENOTDIR. Open the parent dir. */
1704 p = opendir_parent(path);
1711 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1717 while ((dent = readdir64(d)) != NULL) {
1720 param->have_fileinfo = 0;
1722 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1725 /* Don't traverse .lustre directory */
1726 if (!(strcmp(dent->d_name, dot_lustre_name)))
1730 if ((len + dent->d_reclen + 2) > size) {
1731 llapi_err_noerrno(LLAPI_MSG_ERROR,
1732 "error: %s: string buffer is too small",
1737 strcat(path, dent->d_name);
1739 if (dent->d_type == DT_UNKNOWN) {
1740 lstat_t *st = ¶m->lmd->lmd_st;
1742 rc = get_lmd_info(path, d, NULL, param->lmd,
1745 dent->d_type = IFTODT(st->st_mode);
1752 switch (dent->d_type) {
1754 llapi_err_noerrno(LLAPI_MSG_ERROR,
1755 "error: %s: '%s' is UNKNOWN type %d",
1756 __func__, dent->d_name, dent->d_type);
1759 rc = llapi_semantic_traverse(path, size, d, sem_init,
1760 sem_fini, data, dent);
1761 if (rc != 0 && ret == 0)
1767 rc = sem_init(path, d, NULL, data, dent);
1768 if (rc < 0 && ret == 0)
1771 if (sem_fini && rc == 0)
1772 sem_fini(path, d, NULL, data, dent);
1780 sem_fini(path, parent, &d, data, de);
1789 static int param_callback(char *path, semantic_func_t sem_init,
1790 semantic_func_t sem_fini, struct find_param *param)
1792 int ret, len = strlen(path);
1795 if (len > PATH_MAX) {
1797 llapi_error(LLAPI_MSG_ERROR, ret,
1798 "Path name '%s' is too long", path);
1802 buf = (char *)malloc(PATH_MAX + 1);
1806 strlcpy(buf, path, PATH_MAX + 1);
1807 ret = common_param_init(param, buf);
1811 param->fp_depth = 0;
1813 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1814 sem_fini, param, NULL);
1816 find_param_fini(param);
1818 return ret < 0 ? ret : 0;
1821 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1823 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1826 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1831 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1833 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1836 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1841 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1845 fd = open(path, O_RDONLY);
1848 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1852 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1858 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1862 fd = open(path, O_RDONLY);
1865 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1869 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1880 * If uuidp is NULL, return the number of available obd uuids.
1881 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1882 * there are more OSTs then allocated to uuidp, then an error is returned with
1883 * the ost_count set to number of available obd uuids.
1885 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1886 int *ost_count, enum tgt_type type)
1888 struct obd_uuid name;
1892 int rc = 0, index = 0;
1894 /* Get the lov name */
1895 if (type == LOV_TYPE) {
1896 rc = llapi_file_fget_lov_uuid(fd, &name);
1900 rc = llapi_file_fget_lmv_uuid(fd, &name);
1905 /* Now get the ost uuids from /proc */
1906 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1907 type == LOV_TYPE ? "lov" : "lmv", name.uuid);
1908 fp = fopen(buf, "r");
1911 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1915 snprintf(format, sizeof(format),
1916 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1917 while (fgets(buf, sizeof(buf), fp) != NULL) {
1918 if (uuidp && (index < *ost_count)) {
1919 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
1927 if (uuidp && (index > *ost_count))
1934 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1936 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1939 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1944 root = opendir(mnt);
1947 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1952 rc = ioctl(dirfd(root), LL_IOC_GETOBDCOUNT, count);
1960 /* Check if user specified value matches a real uuid. Ignore _UUID,
1961 * -osc-4ba41334, other trailing gunk in comparison.
1962 * @param real_uuid ends in "_UUID"
1963 * @param search_uuid may or may not end in "_UUID"
1965 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1967 int cmplen = strlen(real_uuid);
1968 int searchlen = strlen(search_uuid);
1970 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1972 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1975 /* The UUIDs may legitimately be different lengths, if
1976 * the system was upgraded from an older version. */
1977 if (cmplen != searchlen)
1980 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1983 /* Here, param->obduuid points to a single obduuid, the index of which is
1984 * returned in param->obdindex */
1985 static int setup_obd_uuid(DIR *dir, char *dname, struct find_param *param)
1987 struct obd_uuid obd_uuid;
1993 if (param->got_uuids)
1996 /* Get the lov/lmv name */
1998 rc = llapi_file_fget_lmv_uuid(dirfd(dir), &obd_uuid);
2000 rc = llapi_file_fget_lov_uuid(dirfd(dir), &obd_uuid);
2002 if (rc != -ENOTTY) {
2003 llapi_error(LLAPI_MSG_ERROR, rc,
2004 "error: can't get lov name: %s", dname);
2011 param->got_uuids = 1;
2013 /* Now get the ost uuids from /proc */
2014 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
2015 param->get_lmv ? "lmv" : "lov", obd_uuid.uuid);
2016 fp = fopen(buf, "r");
2019 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
2023 if (!param->obduuid && !param->quiet && !param->obds_printed)
2024 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2025 param->get_lmv ? "MDTS" : "OBDS:");
2027 snprintf(format, sizeof(format),
2028 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2029 while (fgets(buf, sizeof(buf), fp) != NULL) {
2032 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2035 if (param->obduuid) {
2036 if (llapi_uuid_match(obd_uuid.uuid,
2037 param->obduuid->uuid)) {
2038 param->obdindex = index;
2041 } else if (!param->quiet && !param->obds_printed) {
2042 /* Print everything */
2043 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2046 param->obds_printed = 1;
2050 if (param->obduuid && (param->obdindex == OBD_NOT_FOUND)) {
2051 llapi_err_noerrno(LLAPI_MSG_ERROR,
2052 "error: %s: unknown obduuid: %s",
2053 __func__, param->obduuid->uuid);
2060 /* In this case, param->obduuid will be an array of obduuids and
2061 * obd index for all these obduuids will be returned in
2062 * param->obdindexes */
2063 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2064 int num_obds, int **obdindexes, int *obdindex,
2067 int ret, obdcount, obd_valid = 0, obdnum;
2069 struct obd_uuid *uuids = NULL;
2073 if (type == LOV_TYPE)
2074 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2076 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2080 obdcount = atoi(buf);
2081 uuids = (struct obd_uuid *)malloc(obdcount *
2082 sizeof(struct obd_uuid));
2087 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2089 struct obd_uuid *uuids_temp;
2091 if (ret == -EOVERFLOW) {
2092 uuids_temp = realloc(uuids, obdcount *
2093 sizeof(struct obd_uuid));
2094 if (uuids_temp != NULL) {
2096 goto retry_get_uuids;
2102 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2106 indexes = malloc(num_obds * sizeof(*obdindex));
2107 if (indexes == NULL) {
2112 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2115 /* The user may have specified a simple index */
2116 i = strtol(obduuids[obdnum].uuid, &end, 0);
2117 if (end && *end == '\0' && i < obdcount) {
2118 indexes[obdnum] = i;
2121 for (i = 0; i < obdcount; i++) {
2122 if (llapi_uuid_match(uuids[i].uuid,
2123 obduuids[obdnum].uuid)) {
2124 indexes[obdnum] = i;
2130 if (i >= obdcount) {
2131 indexes[obdnum] = OBD_NOT_FOUND;
2132 llapi_err_noerrno(LLAPI_MSG_ERROR,
2133 "error: %s: unknown obduuid: %s",
2134 __func__, obduuids[obdnum].uuid);
2140 *obdindex = OBD_NOT_FOUND;
2142 *obdindex = obd_valid;
2144 *obdindexes = indexes;
2152 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2156 if (param->mdtuuid) {
2157 ret = setup_indexes(dir, path, param->mdtuuid, param->num_mdts,
2158 ¶m->mdtindexes, ¶m->mdtindex, LMV_TYPE);
2162 if (param->obduuid) {
2163 ret = setup_indexes(dir, path, param->obduuid, param->num_obds,
2164 ¶m->obdindexes, ¶m->obdindex, LOV_TYPE);
2168 param->got_uuids = 1;
2172 int llapi_ostlist(char *path, struct find_param *param)
2177 dir = opendir(path);
2181 ret = setup_obd_uuid(dir, path, param);
2188 * Given a filesystem name, or a pathname of a file on a lustre filesystem,
2189 * tries to determine the path to the filesystem's clilov directory under /proc
2191 * fsname is limited to MTI_NAME_MAXLEN in lustre_idl.h
2192 * The NUL terminator is compensated by the additional "%s" bytes. */
2193 #define LOV_LEN (sizeof("/proc/fs/lustre/lov/%s-clilov-*") + MTI_NAME_MAXLEN)
2194 static int clilovpath(const char *fsname, const char *const pathname,
2198 char pattern[LOV_LEN];
2199 char buffer[PATH_MAX + 1];
2201 if (fsname == NULL) {
2202 rc = llapi_search_fsname(pathname, buffer);
2208 snprintf(pattern, sizeof(pattern), "/proc/fs/lustre/lov/%s-clilov-*",
2211 rc = first_match(pattern, buffer);
2215 strlcpy(clilovpath, buffer, sizeof(buffer));
2221 * Given the path to a stripe attribute proc file, tries to open and
2222 * read the attribute and return the value using the attr parameter
2224 static int sattr_read_attr(const char *const fpath,
2229 char line[PATH_MAX + 1];
2232 f = fopen(fpath, "r");
2235 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open '%s'", fpath);
2239 if (fgets(line, sizeof(line), f) != NULL) {
2242 llapi_error(LLAPI_MSG_ERROR, errno, "Cannot read from '%s'", fpath);
2251 * Tries to determine the default stripe attributes for a given filesystem. The
2252 * filesystem to check should be specified by fsname, or will be determined
2255 static int sattr_get_defaults(const char *const fsname,
2256 const char *const pathname,
2257 unsigned int *scount,
2258 unsigned int *ssize,
2259 unsigned int *soffset)
2262 char dpath[PATH_MAX + 1];
2263 char fpath[PATH_MAX + 1];
2265 rc = clilovpath(fsname, pathname, dpath);
2270 snprintf(fpath, PATH_MAX, "%s/stripecount", dpath);
2271 rc = sattr_read_attr(fpath, scount);
2277 snprintf(fpath, PATH_MAX, "%s/stripesize", dpath);
2278 rc = sattr_read_attr(fpath, ssize);
2284 snprintf(fpath, PATH_MAX, "%s/stripeoffset", dpath);
2285 rc = sattr_read_attr(fpath, soffset);
2294 * Tries to gather the default stripe attributes for a given filesystem. If
2295 * the attributes can be determined, they are cached for easy retreival the
2296 * next time they are needed. Only a single filesystem's attributes are
2299 static int sattr_cache_get_defaults(const char *const fsname,
2300 const char *const pathname,
2301 unsigned int *scount,
2302 unsigned int *ssize,
2303 unsigned int *soffset)
2306 char fsname[PATH_MAX + 1];
2307 unsigned int stripecount;
2308 unsigned int stripesize;
2309 unsigned int stripeoffset;
2315 char fsname_buf[PATH_MAX + 1];
2316 unsigned int tmp[3];
2318 if (fsname == NULL) {
2319 rc = llapi_search_fsname(pathname, fsname_buf);
2323 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2326 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2328 * Ensure all 3 sattrs (count, size, and offset) are
2329 * successfully retrieved and stored in tmp before writing to
2332 rc = sattr_get_defaults(fsname_buf, NULL, &tmp[0], &tmp[1],
2337 cache.stripecount = tmp[0];
2338 cache.stripesize = tmp[1];
2339 cache.stripeoffset = tmp[2];
2340 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2344 *scount = cache.stripecount;
2346 *ssize = cache.stripesize;
2348 *soffset = cache.stripeoffset;
2353 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2354 struct lov_user_ost_data_v1 *objects,
2355 int is_dir, int verbose, int depth,
2356 int raw, char *pool_name)
2358 char *prefix = is_dir ? "" : "lmm_";
2359 char *seperator = "";
2362 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2363 lmm_oi_set_seq(&lum->lmm_oi, 0);
2364 if (verbose & VERBOSE_DETAIL)
2365 llapi_printf(LLAPI_MSG_NORMAL, "(Default) ");
2368 if (depth && path && ((verbose != VERBOSE_OBJID) || !is_dir))
2369 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2371 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2372 llapi_printf(LLAPI_MSG_NORMAL, "lmm_magic: 0x%08X\n",
2374 llapi_printf(LLAPI_MSG_NORMAL, "lmm_seq: "LPX64"\n",
2375 lmm_oi_seq(&lum->lmm_oi));
2376 llapi_printf(LLAPI_MSG_NORMAL, "lmm_object_id: "LPX64"\n",
2377 lmm_oi_id(&lum->lmm_oi));
2380 if (verbose & VERBOSE_COUNT) {
2381 if (verbose & ~VERBOSE_COUNT)
2382 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_count: ",
2385 if (!raw && lum->lmm_stripe_count == 0) {
2386 unsigned int scount;
2387 rc = sattr_cache_get_defaults(NULL, path,
2391 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2394 llapi_error(LLAPI_MSG_ERROR, rc,
2395 "Cannot determine default"
2398 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2399 lum->lmm_stripe_count ==
2400 (typeof(lum->lmm_stripe_count))(-1)
2401 ? -1 : lum->lmm_stripe_count);
2404 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2405 (__s16)lum->lmm_stripe_count);
2407 seperator = is_dir ? " " : "\n";
2410 if (verbose & VERBOSE_SIZE) {
2411 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2412 if (verbose & ~VERBOSE_SIZE)
2413 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_size: ",
2415 if (is_dir && !raw && lum->lmm_stripe_size == 0) {
2417 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2420 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2422 llapi_error(LLAPI_MSG_ERROR, rc,
2423 "Cannot determine default"
2426 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2427 lum->lmm_stripe_size);
2429 seperator = is_dir ? " " : "\n";
2432 if ((verbose & VERBOSE_LAYOUT) && !is_dir) {
2433 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2434 if (verbose & ~VERBOSE_LAYOUT)
2435 llapi_printf(LLAPI_MSG_NORMAL, "%spattern: ",
2437 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2441 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2442 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2443 if (verbose & ~VERBOSE_GENERATION)
2444 llapi_printf(LLAPI_MSG_NORMAL, "%slayout_gen: ",
2446 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2447 (int)lum->lmm_layout_gen);
2451 if (verbose & VERBOSE_OFFSET) {
2452 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2453 if (verbose & ~VERBOSE_OFFSET)
2454 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_offset: ",
2457 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2458 lum->lmm_stripe_offset ==
2459 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2460 lum->lmm_stripe_offset);
2462 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2463 objects[0].l_ost_idx);
2464 seperator = is_dir ? " " : "\n";
2467 if ((verbose & VERBOSE_POOL) && (pool_name != NULL)) {
2468 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2469 if (verbose & ~VERBOSE_POOL)
2470 llapi_printf(LLAPI_MSG_NORMAL, "%spool: ",
2472 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2475 if (!is_dir || (is_dir && (verbose != VERBOSE_OBJID)))
2476 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2479 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2480 struct lov_user_ost_data_v1 *objects,
2481 char *path, int is_dir, int obdindex,
2482 int depth, int header, int raw)
2484 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2487 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2488 if (obdindex == objects[i].l_ost_idx) {
2496 lov_dump_user_lmm_header(lum, path, objects, is_dir, header,
2497 depth, raw, pool_name);
2499 if (!is_dir && (header & VERBOSE_OBJID) &&
2500 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2502 llapi_printf(LLAPI_MSG_NORMAL,
2503 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2505 for (i = 0; i < lum->lmm_stripe_count; i++) {
2506 int idx = objects[i].l_ost_idx;
2507 long long oid = ostid_id(&objects[i].l_ost_oi);
2508 long long gr = ostid_seq(&objects[i].l_ost_oi);
2509 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx)) {
2511 sprintf(fmt, "%s%s%s\n",
2512 "\t%6u\t%14llu\t%#13llx\t",
2513 (fid_seq_is_rsvd(gr) ||
2514 fid_seq_is_mdt0(gr)) ?
2515 "%14llu" : "%#14llx", "%s");
2516 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2518 obdindex == idx ? " *" : "");
2522 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2526 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2527 char *path, int obdindex, int depth, int verbose)
2529 struct lmv_user_mds_data *objects = lum->lum_objects;
2530 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2531 int i, obdstripe = 0;
2532 char *separator = "";
2534 if (obdindex != OBD_NOT_FOUND) {
2535 if (lum->lum_stripe_count == 0) {
2536 if (obdindex == lum->lum_stripe_offset)
2539 for (i = 0; i < lum->lum_stripe_count; i++) {
2540 if (obdindex == objects[i].lum_mds) {
2541 llapi_printf(LLAPI_MSG_NORMAL,
2556 /* show all information default */
2558 if (lum->lum_magic == LMV_USER_MAGIC)
2559 verbose = VERBOSE_POOL | VERBOSE_COUNT | VERBOSE_OFFSET;
2561 verbose = VERBOSE_OBJID;
2564 if (depth && path && ((verbose != VERBOSE_OBJID)))
2565 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2567 if (verbose & VERBOSE_COUNT) {
2568 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2569 if (verbose & ~VERBOSE_COUNT)
2570 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2571 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2572 (int)lum->lum_stripe_count);
2573 if (verbose & VERBOSE_OFFSET)
2579 if (verbose & VERBOSE_OFFSET) {
2580 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2581 if (verbose & ~VERBOSE_OFFSET)
2582 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2583 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2584 (int)lum->lum_stripe_offset);
2588 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2589 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2590 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2591 llapi_printf(LLAPI_MSG_NORMAL,
2592 "mdtidx\t\t FID[seq:oid:ver]\n");
2593 for (i = 0; i < lum->lum_stripe_count; i++) {
2594 int idx = objects[i].lum_mds;
2595 struct lu_fid *fid = &objects[i].lum_fid;
2596 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2597 llapi_printf(LLAPI_MSG_NORMAL,
2598 "%6u\t\t "DFID"\t\t%s\n",
2600 obdindex == idx ? " *" : "");
2605 if ((verbose & VERBOSE_POOL) && (pool_name[0] != '\0')) {
2606 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2607 if (verbose & ~VERBOSE_POOL)
2608 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2610 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2614 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2615 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2618 void llapi_lov_dump_user_lmm(struct find_param *param, char *path, int is_dir)
2622 if (param->get_lmv || param->get_default_lmv)
2623 magic = (__u32)param->fp_lmv_md->lum_magic;
2625 magic = *(__u32 *)¶m->lmd->lmd_lmm; /* lum->lmm_magic */
2628 case LOV_USER_MAGIC_V1:
2629 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, NULL,
2630 param->lmd->lmd_lmm.lmm_objects,
2632 param->obdindex, param->fp_max_depth,
2633 param->verbose, param->raw);
2635 case LOV_USER_MAGIC_V3: {
2636 char pool_name[LOV_MAXPOOLNAME + 1];
2637 struct lov_user_ost_data_v1 *objects;
2638 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2640 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
2641 objects = lmmv3->lmm_objects;
2642 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, pool_name,
2643 objects, path, is_dir,
2644 param->obdindex, param->fp_max_depth,
2645 param->verbose, param->raw);
2649 case LMV_USER_MAGIC: {
2650 char pool_name[LOV_MAXPOOLNAME + 1];
2651 struct lmv_user_md *lum;
2653 lum = (struct lmv_user_md *)param->fp_lmv_md;
2654 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
2655 lmv_dump_user_lmm(lum, pool_name, path,
2656 param->obdindex, param->fp_max_depth,
2661 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
2662 "(expecting one of %#x %#x %#x %#x)\n",
2663 *(__u32 *)¶m->lmd->lmd_lmm,
2664 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
2665 LMV_USER_MAGIC, LMV_MAGIC_V1);
2670 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
2676 fname = strrchr(path, '/');
2678 /* It should be a file (or other non-directory) */
2679 if (fname == NULL) {
2680 dname = (char *)malloc(2);
2684 fname = (char *)path;
2686 dname = (char *)malloc(fname - path + 1);
2689 strncpy(dname, path, fname - path);
2690 dname[fname - path] = '\0';
2694 fd = open(dname, O_RDONLY);
2701 strcpy((char *)lum, fname);
2702 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
2705 if (close(fd) == -1 && rc == 0)
2712 int llapi_file_lookup(int dirfd, const char *name)
2714 struct obd_ioctl_data data = { 0 };
2719 if (dirfd < 0 || name == NULL)
2722 data.ioc_version = OBD_IOCTL_VERSION;
2723 data.ioc_len = sizeof(data);
2724 data.ioc_inlbuf1 = (char *)name;
2725 data.ioc_inllen1 = strlen(name) + 1;
2727 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
2729 llapi_error(LLAPI_MSG_ERROR, rc,
2730 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
2735 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
2741 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2742 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2744 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2745 * The table below gives the answers for the specified parameters (value and
2746 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2747 * --------------------------------------
2748 * 1 | file > limit; sign > 0 | -1 / -1 |
2749 * 2 | file = limit; sign > 0 | -1 / -1 |
2750 * 3 | file < limit; sign > 0 | ? / 1 |
2751 * 4 | file > limit; sign = 0 | -1 / -1 |
2752 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2753 * 6 | file < limit; sign = 0 | ? / -1 |
2754 * 7 | file > limit; sign < 0 | 1 / 1 |
2755 * 8 | file = limit; sign < 0 | ? / -1 |
2756 * 9 | file < limit; sign < 0 | ? / -1 |
2757 * --------------------------------------
2758 * Note: 5th actually means that the value is within the interval
2759 * (limit - margin, limit]. */
2760 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2761 int sign, int negopt, unsigned long long margin,
2767 /* Drop the fraction of margin (of days). */
2768 if (file + margin <= limit)
2770 } else if (sign == 0) {
2771 if (file <= limit && file + margin > limit)
2773 else if (file + margin <= limit)
2775 } else if (sign < 0) {
2782 return negopt ? ~ret + 1 : ret;
2785 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
2786 * Return -1 or 1 if file timestamp does not or does match the given criteria
2787 * correspondingly. Return 0 if the MDS time is being checked and there are
2788 * attributes on OSTs and it is not yet clear if the timespamp matches.
2790 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
2791 * updated timestamps. */
2792 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
2797 /* Check if file is accepted. */
2798 if (param->fp_atime) {
2799 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
2800 param->fp_asign, param->fp_exclude_atime,
2807 if (param->fp_mtime) {
2808 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
2809 param->fp_msign, param->fp_exclude_mtime,
2814 /* If the previous check matches, but this one is not yet clear,
2815 * we should return 0 to do an RPC on OSTs. */
2820 if (param->fp_ctime) {
2821 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
2822 param->fp_csign, param->fp_exclude_ctime,
2827 /* If the previous check matches, but this one is not yet clear,
2828 * we should return 0 to do an RPC on OSTs. */
2837 * Check whether the stripes matches the indexes user provided
2841 static int check_obd_match(struct find_param *param)
2843 lstat_t *st = ¶m->lmd->lmd_st;
2844 struct lov_user_ost_data_v1 *lmm_objects;
2847 if (param->obduuid && param->obdindex == OBD_NOT_FOUND)
2850 if (!S_ISREG(st->st_mode))
2853 /* Only those files should be accepted, which have a
2854 * stripe on the specified OST. */
2855 if (!param->lmd->lmd_lmm.lmm_stripe_count)
2858 if (param->lmd->lmd_lmm.lmm_magic ==
2859 LOV_USER_MAGIC_V3) {
2860 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2862 lmm_objects = lmmv3->lmm_objects;
2863 } else if (param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) {
2864 lmm_objects = param->lmd->lmd_lmm.lmm_objects;
2866 llapi_err_noerrno(LLAPI_MSG_ERROR, "%s:Unknown magic: 0x%08X\n",
2867 __func__, param->lmd->lmd_lmm.lmm_magic);
2871 for (i = 0; i < param->lmd->lmd_lmm.lmm_stripe_count; i++) {
2872 for (j = 0; j < param->num_obds; j++) {
2873 if (param->obdindexes[j] ==
2874 lmm_objects[i].l_ost_idx) {
2875 if (param->exclude_obd)
2882 if (param->exclude_obd)
2887 static int check_mdt_match(struct find_param *param)
2891 if (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND)
2894 /* FIXME: For striped dir, we should get stripe information and check */
2895 for (i = 0; i < param->num_mdts; i++) {
2896 if (param->mdtindexes[i] == param->file_mdtindex)
2897 return !param->exclude_mdt;
2900 if (param->exclude_mdt)
2906 * Check whether the obd is active or not, if it is
2907 * not active, just print the object affected by this
2910 static int print_failed_tgt(struct find_param *param, char *path, int type)
2912 struct obd_statfs stat_buf;
2913 struct obd_uuid uuid_buf;
2916 LASSERT(type == LL_STATFS_LOV || type == LL_STATFS_LMV);
2918 memset(&stat_buf, 0, sizeof(struct obd_statfs));
2919 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
2920 ret = llapi_obd_statfs(path, type,
2921 param->obdindex, &stat_buf,
2924 llapi_printf(LLAPI_MSG_NORMAL,
2925 "obd_uuid: %s failed %s ",
2926 param->obduuid->uuid,
2932 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
2933 void *data, struct dirent64 *de)
2935 struct find_param *param = (struct find_param *)data;
2936 DIR *dir = dirp == NULL ? NULL : *dirp;
2937 int decision = 1; /* 1 is accepted; -1 is rejected. */
2938 lstat_t *st = ¶m->lmd->lmd_st;
2940 int checked_type = 0;
2943 LASSERT(parent != NULL || dir != NULL);
2945 if (param->have_fileinfo == 0)
2946 param->lmd->lmd_lmm.lmm_stripe_count = 0;
2948 /* If a regular expression is presented, make the initial decision */
2949 if (param->pattern != NULL) {
2950 char *fname = strrchr(path, '/');
2951 fname = (fname == NULL ? path : fname + 1);
2952 ret = fnmatch(param->pattern, fname, 0);
2953 if ((ret == FNM_NOMATCH && !param->exclude_pattern) ||
2954 (ret == 0 && param->exclude_pattern))
2958 /* See if we can check the file type from the dirent. */
2959 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
2962 if (DTTOIF(de->d_type) == param->fp_type) {
2963 if (param->fp_exclude_type)
2966 if (!param->fp_exclude_type)
2973 /* Request MDS for the stat info if some of these parameters need
2974 * to be compared. */
2975 if (param->obduuid || param->mdtuuid ||
2976 param->fp_check_uid || param->fp_check_gid ||
2977 param->fp_atime || param->fp_mtime || param->fp_ctime ||
2978 param->check_pool || param->check_size ||
2979 param->check_stripecount || param->check_stripesize ||
2980 param->check_layout)
2983 if (param->fp_type != 0 && checked_type == 0)
2986 if (param->have_fileinfo == 0 && decision == 0) {
2987 ret = get_lmd_info(path, parent, dir, param->lmd,
2991 ret = llapi_file_fget_mdtidx(dirfd(dir),
2992 ¶m->file_mdtindex);
2997 ret = lstat_f(path, &tmp_st);
3000 llapi_error(LLAPI_MSG_ERROR, ret,
3001 "error: %s: lstat failed"
3002 "for %s", __func__, path);
3005 if (S_ISREG(tmp_st.st_mode)) {
3006 fd = open(path, O_RDONLY);
3008 ret = llapi_file_fget_mdtidx(fd,
3009 ¶m->file_mdtindex);
3015 /* For special inode, it assumes to
3016 * reside on the same MDT with the
3019 ret = llapi_file_fget_mdtidx(fd,
3020 ¶m->file_mdtindex);
3033 if (param->fp_type && !checked_type) {
3034 if ((st->st_mode & S_IFMT) == param->fp_type) {
3035 if (param->fp_exclude_type)
3038 if (!param->fp_exclude_type)
3044 if (param->obduuid || param->mdtuuid) {
3045 if (lustre_fs && param->got_uuids &&
3046 param->fp_dev != st->st_dev) {
3047 /* A lustre/lustre mount point is crossed. */
3048 param->got_uuids = 0;
3049 param->obds_printed = 0;
3050 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
3053 if (lustre_fs && !param->got_uuids) {
3054 ret = setup_target_indexes(dir ? dir : parent, path,
3059 param->fp_dev = st->st_dev;
3060 } else if (!lustre_fs && param->got_uuids) {
3061 /* A lustre/non-lustre mount point is crossed. */
3062 param->got_uuids = 0;
3063 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
3067 if (param->check_stripesize) {
3068 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_size,
3070 param->stripesize_sign,
3071 param->exclude_stripesize,
3072 param->stripesize_units, 0);
3077 if (param->check_stripecount) {
3078 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_count,
3080 param->stripecount_sign,
3081 param->exclude_stripecount, 1, 0);
3086 if (param->check_layout) {
3089 found = (param->lmd->lmd_lmm.lmm_pattern & param->layout);
3090 if ((param->lmd->lmd_lmm.lmm_pattern == 0xFFFFFFFF) ||
3091 (found && param->exclude_layout) ||
3092 (!found && !param->exclude_layout)) {
3098 /* If an OBD UUID is specified but none matches, skip this file. */
3099 if ((param->obduuid && param->obdindex == OBD_NOT_FOUND) ||
3100 (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND))
3103 /* If a OST or MDT UUID is given, and some OST matches,
3105 if (param->obdindex != OBD_NOT_FOUND ||
3106 param->mdtindex != OBD_NOT_FOUND) {
3107 if (param->obduuid) {
3108 if (check_obd_match(param)) {
3109 /* If no mdtuuid is given, we are done.
3110 * Otherwise, fall through to the mdtuuid
3112 if (!param->mdtuuid)
3118 if (param->mdtuuid) {
3119 if (check_mdt_match(param))
3125 if (param->fp_check_uid) {
3126 if (st->st_uid == param->fp_uid) {
3127 if (param->fp_exclude_uid)
3130 if (!param->fp_exclude_uid)
3135 if (param->fp_check_gid) {
3136 if (st->st_gid == param->fp_gid) {
3137 if (param->fp_exclude_gid)
3140 if (!param->fp_exclude_gid)
3145 if (param->check_pool) {
3146 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
3148 /* empty requested pool is taken as no pool search => V1 */
3149 if (((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) &&
3150 (param->poolname[0] == '\0')) ||
3151 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3152 (strncmp(lmmv3->lmm_pool_name,
3153 param->poolname, LOV_MAXPOOLNAME) == 0)) ||
3154 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3155 (strcmp(param->poolname, "*") == 0))) {
3156 if (param->exclude_pool)
3159 if (!param->exclude_pool)
3164 /* Check the time on mds. */
3166 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
3169 for_mds = lustre_fs ? (S_ISREG(st->st_mode) &&
3170 param->lmd->lmd_lmm.lmm_stripe_count)
3172 decision = find_time_check(st, param, for_mds);
3177 /* If file still fits the request, ask ost for updated info.
3178 The regular stat is almost of the same speed as some new
3179 'glimpse-size-ioctl'. */
3181 if (param->check_size && S_ISREG(st->st_mode) &&
3182 param->lmd->lmd_lmm.lmm_stripe_count)
3186 /* For regular files with the stripe the decision may have not
3187 * been taken yet if *time or size is to be checked. */
3188 LASSERT((S_ISREG(st->st_mode) &&
3189 param->lmd->lmd_lmm.lmm_stripe_count) ||
3190 param->mdtindex != OBD_NOT_FOUND);
3192 if (param->obdindex != OBD_NOT_FOUND)
3193 print_failed_tgt(param, path, LL_STATFS_LOV);
3195 if (param->mdtindex != OBD_NOT_FOUND)
3196 print_failed_tgt(param, path, LL_STATFS_LMV);
3199 ret = ioctl(dirfd(dir), IOC_LOV_GETINFO,
3200 (void *)param->lmd);
3201 } else if (parent) {
3202 ret = ioctl(dirfd(parent), IOC_LOV_GETINFO,
3203 (void *)param->lmd);
3207 if (errno == ENOENT) {
3208 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3209 "warning: %s: %s does not exist",
3214 llapi_error(LLAPI_MSG_ERROR, ret,
3215 "%s: IOC_LOV_GETINFO on %s failed",
3221 /* Check the time on osc. */
3222 decision = find_time_check(st, param, 0);
3229 if (param->check_size)
3230 decision = find_value_cmp(st->st_size, param->size,
3231 param->size_sign, param->exclude_size,
3232 param->size_units, 0);
3234 if (decision != -1) {
3235 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3237 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3239 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3243 /* Do not get down anymore? */
3244 if (param->fp_depth == param->fp_max_depth)
3252 static int cb_mv_init(char *path, DIR *parent, DIR **dirp,
3253 void *param_data, struct dirent64 *de)
3255 struct find_param *param = (struct find_param *)param_data;
3257 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3259 struct obd_ioctl_data data = { 0 };
3264 LASSERT(parent != NULL || dirp != NULL);
3268 if (parent == NULL) {
3269 dir = opendir_parent(path);
3273 llapi_error(LLAPI_MSG_ERROR, ret,
3274 "can not open %s", path);
3281 filename = basename(path);
3282 data.ioc_inlbuf1 = (char *)filename;
3283 data.ioc_inllen1 = strlen(filename) + 1;
3284 data.ioc_inlbuf2 = (char *)¶m->mdtindex;
3285 data.ioc_inllen2 = sizeof(param->mdtindex);
3286 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3288 llapi_error(LLAPI_MSG_ERROR, ret,
3289 "llapi_obd_statfs: error packing ioctl data");
3293 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
3296 fprintf(stderr, "%s migrate failed %d\n", path, ret);
3298 } else if (param->verbose & VERBOSE_DETAIL) {
3299 fprintf(stdout, "migrate %s to MDT%d\n", path, param->mdtindex);
3304 /* If the directory is being migration, we need
3305 * close the directory after migration,
3306 * so the old directory cache will be cleanup
3307 * on the client side, and re-open to get the
3308 * new directory handle */
3309 *dirp = opendir(path);
3312 llapi_error(LLAPI_MSG_ERROR, ret,
3313 "%s: Failed to open '%s'", __func__, path);
3324 int llapi_mv(char *path, struct find_param *param)
3326 return param_callback(path, cb_mv_init, cb_common_fini, param);
3329 int llapi_find(char *path, struct find_param *param)
3331 return param_callback(path, cb_find_init, cb_common_fini, param);
3335 * Get MDT number that the file/directory inode referenced
3336 * by the open fd resides on.
3337 * Return 0 and mdtidx on success, or -ve errno.
3339 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
3341 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
3346 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
3347 struct dirent64 *de)
3349 struct find_param *param = (struct find_param *)data;
3350 DIR *d = dirp == NULL ? NULL : *dirp;
3354 LASSERT(parent != NULL || d != NULL);
3357 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3358 } else if (parent) {
3361 fd = open(path, O_RDONLY);
3363 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
3371 if (ret == -ENODATA) {
3372 if (!param->obduuid)
3373 llapi_printf(LLAPI_MSG_NORMAL,
3374 "%s has no stripe info\n", path);
3376 } else if (ret == -ENOENT) {
3377 llapi_error(LLAPI_MSG_WARN, ret,
3378 "warning: %s: %s does not exist",
3381 } else if (ret == -ENOTTY) {
3382 llapi_error(LLAPI_MSG_ERROR, ret,
3383 "%s: '%s' not on a Lustre fs?",
3386 llapi_error(LLAPI_MSG_ERROR, ret,
3387 "error: %s: LL_IOC_GET_MDTIDX failed for %s",
3393 /* The 'LASSERT(parent != NULL || d != NULL);' guarantees
3394 * that either 'd' or 'parent' is not null.
3395 * So in all cases llapi_file_fget_mdtidx() is called,
3396 * thus initializing 'mdtidx'. */
3397 if (param->quiet || !(param->verbose & VERBOSE_DETAIL))
3398 /* coverity[uninit_use_in_call] */
3399 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
3401 /* coverity[uninit_use_in_call] */
3402 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
3406 /* Do not get down anymore? */
3407 if (param->fp_depth == param->fp_max_depth)
3415 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
3416 struct dirent64 *de)
3418 struct find_param *param = (struct find_param *)data;
3419 DIR *d = dirp == NULL ? NULL : *dirp;
3422 LASSERT(parent != NULL || d != NULL);
3424 if (param->obduuid) {
3426 ret = setup_obd_uuid(d ? d : parent, path, param);
3432 if (param->get_lmv || param->get_default_lmv) {
3433 ret = cb_get_dirstripe(path, d, param);
3435 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
3436 (void *)¶m->lmd->lmd_lmm);
3439 } else if (parent && !param->get_lmv && !param->get_default_lmv) {
3440 char *fname = strrchr(path, '/');
3441 fname = (fname == NULL ? path : fname + 1);
3443 strlcpy((char *)¶m->lmd->lmd_lmm, fname, param->lumlen);
3445 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
3446 (void *)¶m->lmd->lmd_lmm);
3452 if (errno == ENODATA && d != NULL) {
3453 /* We need to "fake" the "use the default" values
3454 * since the lmm struct is zeroed out at this point.
3455 * The magic needs to be set in order to satisfy
3456 * a check later on in the code path.
3457 * The object_seq needs to be set for the "(Default)"
3458 * prefix to be displayed. */
3459 if (param->get_default_lmv) {
3460 struct lmv_user_md *lum = param->fp_lmv_md;
3462 lum->lum_magic = LMV_USER_MAGIC;
3463 lum->lum_stripe_count = 0;
3464 lum->lum_stripe_offset = -1;
3466 } else if (param->get_lmv) {
3467 struct lmv_user_md *lum = param->fp_lmv_md;
3470 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3473 lum->lum_magic = LMV_MAGIC_V1;
3474 lum->lum_stripe_count = 0;
3475 lum->lum_stripe_offset = mdtidx;
3478 struct lov_user_md *lmm = ¶m->lmd->lmd_lmm;
3479 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3481 ostid_set_seq(&lmm->lmm_oi,
3482 FID_SEQ_LOV_DEFAULT);
3483 lmm->lmm_stripe_count = 0;
3484 lmm->lmm_stripe_size = 0;
3485 lmm->lmm_stripe_offset = -1;
3488 } else if (errno == ENODATA && parent != NULL) {
3489 if (!param->obduuid && !param->mdtuuid)
3490 llapi_printf(LLAPI_MSG_NORMAL,
3491 "%s has no stripe info\n", path);
3493 } else if (errno == ENOENT) {
3494 llapi_error(LLAPI_MSG_WARN, -ENOENT,
3495 "warning: %s: %s does not exist",
3498 } else if (errno == ENOTTY) {
3500 llapi_error(LLAPI_MSG_ERROR, ret,
3501 "%s: '%s' not on a Lustre fs?",
3506 llapi_error(LLAPI_MSG_ERROR, ret,
3507 "error: %s: %s failed for %s",
3508 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
3509 "IOC_MDC_GETFILESTRIPE", path);
3516 if (!(param->verbose & VERBOSE_MDTINDEX))
3517 llapi_lov_dump_user_lmm(param, path, d ? 1 : 0);
3520 /* Do not get down anymore? */
3521 if (param->fp_depth == param->fp_max_depth)
3529 int llapi_getstripe(char *path, struct find_param *param)
3531 return param_callback(path, (param->verbose & VERBOSE_MDTINDEX) ?
3532 cb_get_mdt_index : cb_getstripe,
3533 cb_common_fini, param);
3536 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
3537 struct obd_statfs *stat_buf,
3538 struct obd_uuid *uuid_buf)
3541 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3543 struct obd_ioctl_data data = { 0 };
3546 data.ioc_inlbuf1 = (char *)&type;
3547 data.ioc_inllen1 = sizeof(__u32);
3548 data.ioc_inlbuf2 = (char *)&index;
3549 data.ioc_inllen2 = sizeof(__u32);
3550 data.ioc_pbuf1 = (char *)stat_buf;
3551 data.ioc_plen1 = sizeof(struct obd_statfs);
3552 data.ioc_pbuf2 = (char *)uuid_buf;
3553 data.ioc_plen2 = sizeof(struct obd_uuid);
3555 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3557 llapi_error(LLAPI_MSG_ERROR, rc,
3558 "llapi_obd_statfs: error packing ioctl data");
3562 fd = open(path, O_RDONLY);
3563 if (errno == EISDIR)
3564 fd = open(path, O_DIRECTORY | O_RDONLY);
3567 rc = errno ? -errno : -EBADF;
3568 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
3570 /* If we can't even open a file on the filesystem (e.g. with
3571 * -ESHUTDOWN), force caller to exit or it will loop forever. */
3574 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
3576 rc = errno ? -errno : -EINVAL;
3582 #define MAX_STRING_SIZE 128
3584 int llapi_ping(char *obd_type, char *obd_name)
3586 char path[MAX_STRING_SIZE];
3590 snprintf(path, MAX_STRING_SIZE, "/proc/fs/lustre/%s/%s/ping",
3591 obd_type, obd_name);
3593 fd = open(path, O_WRONLY);
3596 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
3600 /* The purpose is to send a byte as a ping, whatever this byte is. */
3601 /* coverity[uninit_use_in_call] */
3602 rc = write(fd, buf, 1);
3612 int llapi_target_iterate(int type_num, char **obd_type,
3613 void *args, llapi_cb_t cb)
3615 char buf[MAX_STRING_SIZE];
3616 FILE *fp = fopen(DEVICES_LIST, "r");
3621 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
3625 while (fgets(buf, sizeof(buf), fp) != NULL) {
3626 char *obd_type_name = NULL;
3627 char *obd_name = NULL;
3628 char *obd_uuid = NULL;
3630 struct obd_statfs osfs_buffer;
3632 while(bufp[0] == ' ')
3635 for(i = 0; i < 3; i++) {
3636 obd_type_name = strsep(&bufp, " ");
3638 obd_name = strsep(&bufp, " ");
3639 obd_uuid = strsep(&bufp, " ");
3641 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
3643 for (i = 0; i < type_num; i++) {
3644 if (strcmp(obd_type_name, obd_type[i]) != 0)
3647 cb(obd_type_name, obd_name, obd_uuid, args);
3654 static void do_target_check(char *obd_type_name, char *obd_name,
3655 char *obd_uuid, void *args)
3659 rc = llapi_ping(obd_type_name, obd_name);
3660 if (rc == ENOTCONN) {
3661 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
3663 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
3665 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
3669 int llapi_target_check(int type_num, char **obd_type, char *dir)
3671 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
3674 #undef MAX_STRING_SIZE
3676 /* Is this a lustre fs? */
3677 int llapi_is_lustre_mnttype(const char *type)
3679 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
3682 /* Is this a lustre client fs? */
3683 int llapi_is_lustre_mnt(struct mntent *mnt)
3685 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
3686 strstr(mnt->mnt_fsname, ":/") != NULL);
3689 int llapi_quotacheck(char *mnt, int check_type)
3694 root = opendir(mnt);
3697 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3701 rc = ioctl(dirfd(root), OBD_IOC_QUOTACHECK, check_type);
3709 int llapi_poll_quotacheck(char *mnt, struct if_quotacheck *qchk)
3715 root = opendir(mnt);
3718 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3723 rc = ioctl(dirfd(root), OBD_IOC_POLL_QUOTACHECK, qchk);
3727 if (poll_intvl < 30)
3735 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
3740 root = opendir(mnt);
3743 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3747 rc = ioctl(dirfd(root), OBD_IOC_QUOTACTL, qctl);
3755 static int cb_quotachown(char *path, DIR *parent, DIR **dirp, void *data,
3756 struct dirent64 *de)
3758 struct find_param *param = (struct find_param *)data;
3759 DIR *d = dirp == NULL ? NULL : *dirp;
3763 LASSERT(parent != NULL || d != NULL);
3765 rc = get_lmd_info(path, parent, d, param->lmd, param->lumlen);
3767 if (rc == -ENODATA) {
3768 if (!param->obduuid && !param->quiet)
3769 llapi_error(LLAPI_MSG_ERROR, -ENODATA,
3770 "%s has no stripe info", path);
3772 } else if (rc == -ENOENT) {
3778 st = ¶m->lmd->lmd_st;
3780 /* libc chown() will do extra check, and if the real owner is
3781 * the same as the ones to set, it won't fall into kernel, so
3782 * invoke syscall directly. */
3783 rc = syscall(SYS_chown, path, -1, -1);
3785 llapi_error(LLAPI_MSG_ERROR, errno,
3786 "error: chown %s", path);
3788 rc = chmod(path, st->st_mode);
3791 llapi_error(LLAPI_MSG_ERROR, rc, "error: chmod %s (%hu)",
3798 int llapi_quotachown(char *path, int flag)
3800 struct find_param param;
3802 memset(¶m, 0, sizeof(param));
3803 param.recursive = 1;
3807 return param_callback(path, cb_quotachown, NULL, ¶m);
3813 #include <sys/wait.h>
3817 static int rmtacl_notify(int ops)
3821 int found = 0, fd = 0, rc = 0;
3823 fp = setmntent(MOUNTED, "r");
3826 llapi_error(LLAPI_MSG_ERROR, rc,
3827 "error setmntent(%s)", MOUNTED);
3832 mnt = getmntent(fp);
3836 if (!llapi_is_lustre_mnt(mnt))
3839 fd = open(mnt->mnt_dir, O_RDONLY | O_DIRECTORY);
3842 llapi_error(LLAPI_MSG_ERROR, rc,
3843 "Can't open '%s'", mnt->mnt_dir);
3847 rc = ioctl(fd, LL_IOC_RMTACL, ops);
3851 llapi_error(LLAPI_MSG_ERROR, rc,
3852 "ioctl RMTACL on '%s' err %d",
3862 return ((rc != 0) ? rc : found);
3865 static char *next_token(char *p, int div)
3871 while (*p && *p != ':' && !isspace(*p))
3874 while (*p == ':' || isspace(*p))
3877 return *p ? p : NULL;
3880 static int rmtacl_name2id(char *name, int is_user)
3885 pw = getpwnam(name);
3889 return (int)(pw->pw_uid);
3893 gr = getgrnam(name);
3897 return (int)(gr->gr_gid);
3901 static int isodigit(int c)
3903 return (c >= '0' && c <= '7') ? 1 : 0;
3907 * Whether the name is just digits string (uid/gid) already or not.
3912 static int str_is_id(char *str)
3919 if (*str == 'x' || *str == 'X') { /* for Hex. */
3920 if (!isxdigit(*(++str)))
3923 while (isxdigit(*(++str)));
3924 } else if (isodigit(*str)) { /* for Oct. */
3925 while (isodigit(*(++str)));
3927 } else if (isdigit(*str)) { /* for Dec. */
3928 while (isdigit(*(++str)));
3931 return (*str == 0) ? 1 : 0;
3941 #define RMTACL_OPTNAME(name) name, sizeof(name) - 1
3943 static rmtacl_name_t rmtacl_namelist[] = {
3944 { RMTACL_OPTNAME("user:"), 1, 0 },
3945 { RMTACL_OPTNAME("group:"), 0, 0 },
3946 { RMTACL_OPTNAME("default:user:"), 1, 0 },
3947 { RMTACL_OPTNAME("default:group:"), 0, 0 },
3948 /* for --tabular option */
3949 { RMTACL_OPTNAME("user"), 1, 1 },
3950 { RMTACL_OPTNAME("group"), 0, 1 },
3954 static int rgetfacl_output(char *str)
3956 char *start = NULL, *end = NULL;
3957 int is_user = 0, n, id;
3964 for (rn = rmtacl_namelist; rn->name; rn++) {
3965 if(strncmp(str, rn->name, rn->length) == 0) {
3966 if (!rn->next_token)
3967 start = str + rn->length;
3969 start = next_token(str + rn->length, 0);
3970 is_user = rn->is_user;
3975 end = next_token(start, 1);
3976 if (end == NULL || start == end) {
3977 n = printf("%s", str);
3983 id = rmtacl_name2id(start, is_user);
3984 if (id == INVALID_ID) {
3985 if (str_is_id(start)) {
3987 n = printf("%s", str);
3990 } else if ((id == NOBODY_UID && is_user) ||
3991 (id == NOBODY_GID && !is_user)) {
3993 n = printf("%s", str);
3997 n = printf("%s%d%s", str, id, end);
4002 static int child_status(int status)
4004 return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
4007 static int do_rmtacl(int argc, char *argv[], int ops, int (output_func)(char *))
4010 int fd[2], status, rc;
4017 llapi_error(LLAPI_MSG_ERROR, rc, "Can't create pipe");
4024 llapi_error(LLAPI_MSG_ERROR, rc, "Can't fork");
4029 /* child process redirects its output. */
4032 if (dup2(fd[1], 1) < 0) {
4034 llapi_error(LLAPI_MSG_ERROR, rc,
4035 "Can't dup2 %d", fd[1]);
4045 status = rmtacl_notify(ops);
4049 exit(execvp(argv[0], argv));
4052 /* the following is parent process */
4053 fp = fdopen(fd[0], "r");
4056 llapi_error(LLAPI_MSG_ERROR, rc, "fdopen %d failed", fd[0]);
4062 while (fgets(buf, PIPE_BUF, fp) != NULL) {
4063 if (output_func(buf) < 0)
4064 fprintf(stderr, "WARNING: unexpected error!\n[%s]\n",
4070 if (waitpid(pid, &status, 0) < 0) {
4072 llapi_error(LLAPI_MSG_ERROR, rc, "waitpid %d failed", pid);
4076 return child_status(status);
4079 int llapi_lsetfacl(int argc, char *argv[])
4081 return do_rmtacl(argc, argv, RMT_LSETFACL, NULL);
4084 int llapi_lgetfacl(int argc, char *argv[])
4086 return do_rmtacl(argc, argv, RMT_LGETFACL, NULL);
4089 int llapi_rsetfacl(int argc, char *argv[])
4091 return do_rmtacl(argc, argv, RMT_RSETFACL, NULL);
4094 int llapi_rgetfacl(int argc, char *argv[])
4096 return do_rmtacl(argc, argv, RMT_RGETFACL, rgetfacl_output);
4099 int llapi_cp(int argc, char *argv[])
4103 rc = rmtacl_notify(RMT_RSETFACL);
4107 exit(execvp(argv[0], argv));
4110 int llapi_ls(int argc, char *argv[])
4114 rc = rmtacl_notify(RMT_LGETFACL);
4118 exit(execvp(argv[0], argv));
4121 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4122 * format must have %s%s, buf must be > 16
4123 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4124 * then buf = "lustre-MDT0000"
4126 static int get_mdtname(char *name, char *format, char *buf)
4128 char suffix[]="-MDT0000";
4129 int len = strlen(name);
4131 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4132 name[len - 5] = '\0';
4137 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4140 /* Not enough room to add suffix */
4141 llapi_err_noerrno(LLAPI_MSG_ERROR,
4142 "MDT name too long |%s|", name);
4147 return sprintf(buf, format, name, suffix);
4150 /** ioctl on filsystem root, with mdtindex sent as data
4151 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4152 * \param mdtidxp pointer to integer within data to be filled in with the
4153 * mdt index (0 if no mdt is specified). NULL won't be filled.
4155 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4163 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4164 Open root and parse mdt index. */
4165 if (mdtname[0] == '/') {
4167 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4168 (char *)mdtname, -1);
4170 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4172 ptr = fsname + strlen(fsname) - 8;
4174 index = strtol(ptr + 4, NULL, 10);
4175 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4179 llapi_err_noerrno(LLAPI_MSG_ERROR,
4180 "Can't open %s: %d\n", mdtname, rc);
4187 rc = ioctl(fd, opc, data);
4192 if (rc && want_error)
4193 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d err %d", opc, rc);
4199 /****** Changelog API ********/
4201 static int changelog_ioctl(const char *mdtname, int opc, int id,
4202 long long recno, int flags)
4204 struct ioc_changelog data;
4208 data.icc_recno = recno;
4209 data.icc_flags = flags;
4210 idx = (int *)(&data.icc_mdtindex);
4212 return root_ioctl(mdtname, opc, &data, idx, WANT_ERROR);
4215 #define CHANGELOG_PRIV_MAGIC 0xCA8E1080
4216 struct changelog_private {
4218 enum changelog_send_flag flags;
4219 lustre_kernelcomm kuc;
4222 /** Start reading from a changelog
4223 * @param priv Opaque private control structure
4224 * @param flags Start flags (e.g. CHANGELOG_FLAG_BLOCK)
4225 * @param device Report changes recorded on this MDT
4226 * @param startrec Report changes beginning with this record number
4227 * (just call llapi_changelog_fini when done; don't need an endrec)
4229 int llapi_changelog_start(void **priv, enum changelog_send_flag flags,
4230 const char *device, long long startrec)
4232 struct changelog_private *cp;
4236 /* Set up the receiver control struct */
4237 cp = calloc(1, sizeof(*cp));
4241 cp->magic = CHANGELOG_PRIV_MAGIC;
4244 /* Set up the receiver */
4245 rc = libcfs_ukuc_start(&cp->kuc, 0 /* no group registration */, 0);
4251 /* CHANGELOG_FLAG_JOBID will eventually become mandatory. Display a
4252 * warning if it's missing. */
4253 if (!(flags & CHANGELOG_FLAG_JOBID) && !warned) {
4254 llapi_err_noerrno(LLAPI_MSG_WARN, "warning: %s() called "
4255 "w/o CHANGELOG_FLAG_JOBID", __func__);
4259 /* Tell the kernel to start sending */
4260 rc = changelog_ioctl(device, OBD_IOC_CHANGELOG_SEND, cp->kuc.lk_wfd,
4262 /* Only the kernel reference keeps the write side open */
4263 close(cp->kuc.lk_wfd);
4264 cp->kuc.lk_wfd = LK_NOFD;
4266 /* frees and clears priv */
4267 llapi_changelog_fini(priv);
4278 /** Finish reading from a changelog */
4279 int llapi_changelog_fini(void **priv)
4281 struct changelog_private *cp = (struct changelog_private *)*priv;
4283 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4286 libcfs_ukuc_stop(&cp->kuc);
4293 * Convert all records to a same format according to the caller's wishes.
4294 * Default is CLF_VERSION | CLF_RENAME.
4295 * Add CLF_JOBID if explicitely requested.
4297 * \param rec The record to remap. It is expected to be big enough to
4298 * properly handle the final format.
4299 * \return 1 if anything changed. 0 otherwise.
4301 /** Read the next changelog entry
4302 * @param priv Opaque private control structure
4303 * @param rech Changelog record handle; record will be allocated here
4304 * @return 0 valid message received; rec is set
4308 #define DEFAULT_RECORD_FMT (CLF_VERSION | CLF_RENAME)
4309 int llapi_changelog_recv(void *priv, struct changelog_rec **rech)
4311 struct changelog_private *cp = (struct changelog_private *)priv;
4312 struct kuc_hdr *kuch;
4313 enum changelog_rec_flags rec_fmt = DEFAULT_RECORD_FMT;
4316 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4320 kuch = malloc(KUC_CHANGELOG_MSG_MAXSIZE);
4324 if (cp->flags & CHANGELOG_FLAG_JOBID)
4325 rec_fmt |= CLF_JOBID;
4328 rc = libcfs_ukuc_msg_get(&cp->kuc, (char *)kuch,
4329 KUC_CHANGELOG_MSG_MAXSIZE,
4330 KUC_TRANSPORT_CHANGELOG);
4334 if ((kuch->kuc_transport != KUC_TRANSPORT_CHANGELOG) ||
4335 ((kuch->kuc_msgtype != CL_RECORD) &&
4336 (kuch->kuc_msgtype != CL_EOF))) {
4337 llapi_err_noerrno(LLAPI_MSG_ERROR,
4338 "Unknown changelog message type %d:%d\n",
4339 kuch->kuc_transport, kuch->kuc_msgtype);
4344 if (kuch->kuc_msgtype == CL_EOF) {
4345 if (cp->flags & CHANGELOG_FLAG_FOLLOW) {
4354 /* Our message is a changelog_rec. Use pointer math to skip
4355 * kuch_hdr and point directly to the message payload. */
4356 *rech = (struct changelog_rec *)(kuch + 1);
4357 changelog_remap_rec(*rech, rec_fmt);
4367 /** Release the changelog record when done with it. */
4368 int llapi_changelog_free(struct changelog_rec **rech)
4371 /* We allocated memory starting at the kuc_hdr, but passed
4372 * the consumer a pointer to the payload.
4373 * Use pointer math to get back to the header.
4375 struct kuc_hdr *kuch = (struct kuc_hdr *)*rech - 1;
4382 int llapi_changelog_clear(const char *mdtname, const char *idstr,
4388 llapi_err_noerrno(LLAPI_MSG_ERROR,
4389 "can't purge negative records\n");
4393 id = strtol(idstr + strlen(CHANGELOG_USER_PREFIX), NULL, 10);
4394 if ((id == 0) || (strncmp(idstr, CHANGELOG_USER_PREFIX,
4395 strlen(CHANGELOG_USER_PREFIX)) != 0)) {
4396 llapi_err_noerrno(LLAPI_MSG_ERROR,
4397 "expecting id of the form '"
4398 CHANGELOG_USER_PREFIX
4399 "<num>'; got '%s'\n", idstr);
4403 return changelog_ioctl(mdtname, OBD_IOC_CHANGELOG_CLEAR, id, endrec, 0);
4406 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4407 int buflen, long long *recno, int *linkno)
4410 struct getinfo_fid2path *gf;
4413 while (*fidstr == '[')
4416 sscanf(fidstr, SFID, RFID(&fid));
4417 if (!fid_is_sane(&fid)) {
4418 llapi_err_noerrno(LLAPI_MSG_ERROR,
4419 "bad FID format [%s], should be "DFID"\n",
4420 fidstr, (__u64)1, 2, 0);
4424 gf = malloc(sizeof(*gf) + buflen);
4428 gf->gf_recno = *recno;
4429 gf->gf_linkno = *linkno;
4430 gf->gf_pathlen = buflen;
4432 /* Take path or fsname */
4433 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4436 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl err %d", rc);
4438 memcpy(buf, gf->gf_path, gf->gf_pathlen);
4439 if (buf[0] == '\0') { /* ROOT path */
4443 *recno = gf->gf_recno;
4444 *linkno = gf->gf_linkno;
4451 static int fid_from_lma(const char *path, const int fd, lustre_fid *fid)
4454 struct lustre_mdt_attrs *lma;
4458 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4460 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4463 lma = (struct lustre_mdt_attrs *)buf;
4464 fid_le_to_cpu(fid, &lma->lma_self_fid);
4468 int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid,
4473 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4482 int llapi_fd2fid(const int fd, lustre_fid *fid)
4486 memset(fid, 0, sizeof(*fid));
4488 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4489 if (rc == -EINVAL || rc == -ENOTTY)
4490 rc = fid_from_lma(NULL, fd, fid);
4495 int llapi_path2fid(const char *path, lustre_fid *fid)
4499 memset(fid, 0, sizeof(*fid));
4500 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4502 if (errno == ELOOP || errno == ENXIO)
4503 return fid_from_lma(path, -1, fid);
4507 rc = llapi_fd2fid(fd, fid);
4508 if (rc == -EINVAL || rc == -ENOTTY)
4509 rc = fid_from_lma(path, -1, fid);
4515 int llapi_fd2parent(int fd, unsigned int linkno, lustre_fid *parent_fid,
4516 char *name, size_t name_size)
4518 struct getparent *gp;
4521 gp = malloc(sizeof(*gp) + name_size);
4525 memset(gp, 0, sizeof(*gp) + name_size);
4526 gp->gp_linkno = linkno;
4527 gp->gp_name_size = name_size;
4529 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4535 if (gp->gp_name_size > name_size) {
4540 *parent_fid = gp->gp_fid;
4541 strncpy(name, gp->gp_name, name_size);
4542 name[name_size - 1] = '\0';
4549 int llapi_path2parent(const char *path, unsigned int linkno,
4550 lustre_fid *parent_fid, char *name, size_t name_size)
4555 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4559 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4564 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4569 root = opendir(mnt);
4572 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4576 rc = ioctl(dirfd(root), LL_IOC_GET_CONNECT_FLAGS, flags);
4579 llapi_error(LLAPI_MSG_ERROR, rc,
4580 "ioctl on %s for getting connect flags failed", mnt);
4586 int llapi_get_version(char *buffer, int buffer_size,
4591 struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
4593 fd = open(OBD_DEV_PATH, O_RDONLY);
4597 memset(buffer, 0, buffer_size);
4598 data->ioc_version = OBD_IOCTL_VERSION;
4599 data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
4600 data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
4601 data->ioc_len = obd_ioctl_packlen(data);
4603 rc = ioctl(fd, OBD_GET_VERSION, buffer);
4610 *version = data->ioc_bulk;
4615 * Get a 64-bit value representing the version of file data pointed by fd.
4617 * Each write or truncate, flushed on OST, will change this value. You can use
4618 * this value to verify if file data was modified. This only checks the file
4619 * data, not metadata.
4621 * \param flags 0: no flush pages, usually used it the process has already
4623 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4625 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4626 * pages from clients.
4628 * \retval 0 on success.
4629 * \retval -errno on error.
4631 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4634 struct ioc_data_version idv;
4636 idv.idv_flags = flags;
4638 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4642 *data_version = idv.idv_version;
4648 * Create a file without any name open it for read/write
4650 * - file is created as if it were a standard file in the given \a directory
4651 * - file does not appear in \a directory and mtime does not change because
4652 * the filename is handled specially by the Lustre MDS.
4653 * - file is removed at final close
4654 * - file modes are rw------- since it doesn't make sense to have a read-only
4655 * or write-only file that cannot be opened again.
4656 * - if user wants another mode it must use fchmod() on the open file, no
4657 * security problems arise because it cannot be opened by another process.
4659 * \param[in] directory directory from which to inherit layout/MDT idx
4660 * \param[in] idx MDT index on which the file is created,
4661 * \a idx == -1 means no specific MDT is requested
4662 * \param[in] open_flags standard open(2) flags
4664 * \retval 0 on success.
4665 * \retval -errno on error.
4667 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
4669 char file_path[PATH_MAX];
4670 char filename[PATH_MAX];
4675 fd = open("/dev/urandom", O_RDONLY);
4677 llapi_error(LLAPI_MSG_ERROR, errno,
4678 "Cannot open /dev/urandom");
4681 rc = read(fd, &random, sizeof(random));
4683 if (rc < sizeof(random)) {
4684 llapi_error(LLAPI_MSG_ERROR, errno,
4685 "cannot read %zu bytes from /dev/urandom",
4690 snprintf(filename, sizeof(filename),
4691 LUSTRE_VOLATILE_HDR"::%.4X", random);
4693 snprintf(filename, sizeof(filename),
4694 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, random);
4696 rc = snprintf(file_path, sizeof(file_path),
4697 "%s/%s", directory, filename);
4698 if (rc >= sizeof(file_path))
4701 fd = open(file_path, O_RDWR | O_CREAT | open_flags, S_IRUSR | S_IWUSR);
4703 llapi_error(LLAPI_MSG_ERROR, errno,
4704 "Cannot create volatile file '%s' in '%s'",
4705 filename + LUSTRE_VOLATILE_HDR_LEN,
4709 /* unlink file in case this wasn't a Lustre filesystem, and the
4710 * magic volatile filename wasn't handled as intended. The effect
4718 * Swap the layouts between 2 file descriptors
4719 * the 2 files must be open in write
4720 * first fd received the ioctl, second fd is passed as arg
4721 * this is assymetric but avoid use of root path for ioctl
4723 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4725 struct lustre_swap_layouts lsl;
4728 srandom(time(NULL));
4730 lsl.sl_flags = flags;
4731 lsl.sl_gid = random();
4734 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4741 * Swap the layouts between 2 files
4742 * the 2 files are open in write
4744 int llapi_swap_layouts(const char *path1, const char *path2,
4745 __u64 dv1, __u64 dv2, __u64 flags)
4749 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4752 llapi_error(LLAPI_MSG_ERROR, rc,
4753 "error: cannot open '%s' for write", path1);
4757 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4760 llapi_error(LLAPI_MSG_ERROR, rc,
4761 "error: cannot open '%s' for write", path2);
4765 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4767 llapi_error(LLAPI_MSG_ERROR, rc,
4768 "error: cannot swap layout between '%s' and '%s'",
4779 * Attempt to open a file with Lustre file identifier \a fid
4780 * and return an open file descriptor.
4782 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
4783 * \param[in] fid Lustre file identifier of file to open
4784 * \param[in] flags open() flags
4786 * \retval non-negative file descriptor on successful open
4787 * \retval -1 if an error occurred
4789 int llapi_open_by_fid(const char *lustre_dir, const lustre_fid *fid, int flags)
4791 char mntdir[PATH_MAX];
4792 char path[PATH_MAX];
4795 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
4799 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
4800 return open(path, flags);
4806 * \param fd File to lock.
4807 * \param gid Group Identifier.
4809 * \retval 0 on success.
4810 * \retval -errno on failure.
4812 int llapi_group_lock(int fd, int gid)
4816 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
4819 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
4827 * \param fd File to unlock.
4828 * \param gid Group Identifier.
4830 * \retval 0 on success.
4831 * \retval -errno on failure.
4833 int llapi_group_unlock(int fd, int gid)
4837 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
4840 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");