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, 2015, 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/util/string.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)
191 char *argbuf = (char *)optarg;
192 unsigned long long frac = 0, frac_d = 1;
194 if (strncmp(optarg, "-", 1) == 0)
197 if (*size_units == 0)
200 *size = strtoull(argbuf, &end, 0);
201 if (end != NULL && *end == '.') {
205 frac = strtoull(argbuf, &end, 10);
206 /* count decimal places */
207 for (i = 0; i < (end - argbuf); i++)
212 if ((*end == 'b') && *(end + 1) == '\0' &&
213 (*size & (~0ULL << (64 - 9))) == 0 &&
215 *size_units = 1 << 9;
216 } else if ((*end == 'b') &&
217 *(end + 1) == '\0' &&
220 } else if ((*end == 'k' || *end == 'K') &&
221 *(end + 1) == '\0' &&
222 (*size & (~0ULL << (64 - 10))) == 0) {
223 *size_units = 1 << 10;
224 } else if ((*end == 'm' || *end == 'M') &&
225 *(end + 1) == '\0' &&
226 (*size & (~0ULL << (64 - 20))) == 0) {
227 *size_units = 1 << 20;
228 } else if ((*end == 'g' || *end == 'G') &&
229 *(end + 1) == '\0' &&
230 (*size & (~0ULL << (64 - 30))) == 0) {
231 *size_units = 1 << 30;
232 } else if ((*end == 't' || *end == 'T') &&
233 *(end + 1) == '\0' &&
234 (*size & (~0ULL << (64 - 40))) == 0) {
235 *size_units = 1ULL << 40;
236 } else if ((*end == 'p' || *end == 'P') &&
237 *(end + 1) == '\0' &&
238 (*size & (~0ULL << (64 - 50))) == 0) {
239 *size_units = 1ULL << 50;
240 } else if ((*end == 'e' || *end == 'E') &&
241 *(end + 1) == '\0' &&
242 (*size & (~0ULL << (64 - 60))) == 0) {
243 *size_units = 1ULL << 60;
248 *size = *size * *size_units + frac * *size_units / frac_d;
253 /* XXX: llapi_xxx() functions return negative values upon failure */
255 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
256 int stripe_count, int stripe_pattern)
260 /* 64 KB is the largest common page size I'm aware of (on ia64), but
261 * check the local page size just in case. */
262 page_size = LOV_MIN_STRIPE_SIZE;
263 if (getpagesize() > page_size) {
264 page_size = getpagesize();
265 llapi_err_noerrno(LLAPI_MSG_WARN,
266 "warning: your page size (%u) is "
267 "larger than expected (%u)", page_size,
268 LOV_MIN_STRIPE_SIZE);
270 if (!llapi_stripe_size_is_aligned(stripe_size)) {
272 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
273 "must be an even multiple of %d bytes",
274 stripe_size, page_size);
277 if (!llapi_stripe_index_is_valid(stripe_offset)) {
279 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
283 if (!llapi_stripe_count_is_valid(stripe_count)) {
285 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
289 if (llapi_stripe_size_is_too_big(stripe_size)) {
291 llapi_error(LLAPI_MSG_ERROR, rc,
292 "warning: stripe size 4G or larger "
293 "is not currently supported and would wrap");
299 /* return the first file matching this pattern */
300 static int first_match(char *pattern, char *buffer)
304 if (glob(pattern, GLOB_BRACE, NULL, &glob_info))
307 if (glob_info.gl_pathc < 1) {
308 globfree(&glob_info);
312 strcpy(buffer, glob_info.gl_pathv[0]);
314 globfree(&glob_info);
318 static int find_target_obdpath(char *fsname, char *path)
321 char pattern[PATH_MAX + 1];
324 snprintf(pattern, PATH_MAX,
325 "/proc/fs/lustre/lov/%s-*/target_obd",
327 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
328 if (rc == GLOB_NOMATCH)
333 strcpy(path, glob_info.gl_pathv[0]);
334 globfree(&glob_info);
338 static int find_poolpath(char *fsname, char *poolname, char *poolpath)
341 char pattern[PATH_MAX + 1];
344 snprintf(pattern, PATH_MAX,
345 "/proc/fs/lustre/lov/%s-*/pools/%s",
347 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
348 /* If no pools, make sure the lov is available */
349 if ((rc == GLOB_NOMATCH) &&
350 (find_target_obdpath(fsname, poolpath) == -ENODEV))
355 strcpy(poolpath, glob_info.gl_pathv[0]);
356 globfree(&glob_info);
361 * Trim a trailing newline from a string, if it exists.
363 int llapi_chomp_string(char *buf)
379 * return a parameter string for a specific device type or mountpoint
381 * \param param_path the path to the file containing parameter data
382 * \param result buffer for parameter value string
383 * \param result_size size of buffer for return value
385 * The \param param_path is appended to /proc/{fs,sys}/{lnet,lustre} to
386 * complete the absolute path to the file containing the parameter data
387 * the user is requesting. If that file exist then the data is read from
388 * the file and placed into the \param result buffer that is passed by
389 * the user. Data is only copied up to the \param result_size to prevent
390 * overflow of the array.
392 * Return 0 for success, with a NUL-terminated string in \param result.
393 * Return -ve value for error.
395 int get_param(const char *param_path, char *result,
396 unsigned int result_size)
398 char file[PATH_MAX + 1], pattern[PATH_MAX + 1], buf[result_size];
402 snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
404 rc = first_match(pattern, file);
405 if (rc != 0 || result == NULL)
408 fp = fopen(file, "r");
410 while (fgets(buf, result_size, fp) != NULL)
419 #define DEVICES_LIST "/proc/fs/lustre/devices"
422 * return a parameter string for a specific device type or mountpoint
424 * \param fsname Lustre filesystem name (optional)
425 * \param file_path path to file in filesystem (optional, if fsname unset)
426 * \param obd_type Lustre OBD device type
427 * \param param_name parameter name to fetch
428 * \param value return buffer for parameter value string
429 * \param val_len size of buffer for return value
431 * If fsname is specified then the parameter will be from that filesystem
432 * (if it exists). If file_path is given and it is in a mounted Lustre
433 * filesystem, then the parameter will be otherwise the value may be
434 * from any mounted filesystem (if there is more than one).
436 * If "obd_type" matches a Lustre device then the first matching device
437 * (as with "lctl dl", constrained by \param fsname or \param mount_path)
438 * will be used to provide the return value, otherwise the first such
439 * device found will be used.
441 * Return 0 for success, with a NUL-terminated string in \param buffer.
442 * Return -ve value for error.
444 static int get_param_obdvar(const char *fsname, const char *file_path,
445 const char *obd_type, const char *param_name,
446 char *value, unsigned int val_len)
448 char devices[PATH_MAX];
449 char dev[PATH_MAX] = "*";
454 fp = fopen(DEVICES_LIST, "r");
457 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
461 if (fsname == NULL && file_path != NULL) {
462 rc = llapi_search_fsname(file_path, fs);
464 llapi_error(LLAPI_MSG_ERROR, rc,
465 "'%s' is not on a Lustre filesystem",
469 } else if (fsname != NULL) {
470 rc = strlcpy(fs, fsname, sizeof(fs));
471 if (rc >= sizeof(fs)) {
477 while (fgets(devices, sizeof(devices) - 1, fp) != NULL) {
478 char *bufp = devices, *tmp;
480 devices[sizeof(devices) - 1] = '\0';
481 while (bufp[0] == ' ')
484 tmp = strstr(bufp, obd_type);
486 tmp += strlen(obd_type) + 1;
489 rc = strlcpy(dev, tmp, sizeof(dev));
490 if (rc >= sizeof(dev)) {
495 tmp = strchr(dev, ' ');
502 if (dev[0] == '*' && strlen(fs)) {
503 rc = snprintf(dev, sizeof(dev), "%s-*", fs);
504 if (rc >= sizeof(dev)) {
509 rc = snprintf(devices, sizeof(devices), "%s/%s/%s", obd_type, dev,
511 if (rc >= sizeof(devices)) {
517 return get_param(devices, value, val_len);
525 * TYPE one of llite, lmv, lov.
526 * /proc/fs/lustre/TYPE/INST the directory of interest.
528 static int get_param_cli(const char *type, const char *inst,
529 const char *param, char *buf, size_t buf_size)
531 char param_path[PATH_MAX + 1];
532 FILE *param_file = NULL;
535 snprintf(param_path, sizeof(param_path),
536 "/proc/fs/lustre/%s/%s/%s", type, inst, param);
538 param_file = fopen(param_path, "r");
539 if (param_file == NULL) {
544 if (fgets(buf, buf_size, param_file) == NULL) {
551 if (param_file != NULL)
557 static int get_param_llite(const char *path,
558 const char *param, char *buf, size_t buf_size)
563 rc = llapi_getname(path, inst, sizeof(inst));
567 return get_param_cli("llite", inst, param, buf, buf_size);
570 static int get_param_lov(const char *path,
571 const char *param, char *buf, size_t buf_size)
573 struct obd_uuid uuid;
576 rc = llapi_file_get_lov_uuid(path, &uuid);
580 return get_param_cli("lov", uuid.uuid, param, buf, buf_size);
583 static int get_param_lmv(const char *path,
584 const char *param, char *buf, size_t buf_size)
586 struct obd_uuid uuid;
589 rc = llapi_file_get_lmv_uuid(path, &uuid);
593 return get_param_cli("lmv", uuid.uuid, param, buf, buf_size);
596 static int get_mds_md_size(const char *path)
598 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
602 /* Get the max ea size from llite proc. */
603 rc = get_param_llite(path, "max_easize", buf, sizeof(buf));
615 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
617 return get_param_lmv(path, "uuid", buf, bufsize);
621 * if pool is NULL, search ostname in target_obd
622 * if pool is not NULL:
623 * if pool not found returns errno < 0
624 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
625 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
627 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
630 char buffer[PATH_MAX + 1];
634 len = strlen(ostname);
636 if (poolname == NULL) {
640 rc = find_target_obdpath(fsname, buffer);
642 rc = find_poolpath(fsname, poolname, buffer);
647 fd = fopen(buffer, "r");
651 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
652 if (poolname == NULL) {
654 /* Search for an ostname in the list of OSTs
655 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
656 ptr = strchr(buffer, ' ');
658 (strncmp(ptr + 1, ostname, len) == 0)) {
663 /* Search for an ostname in a pool,
664 (or an existing non-empty pool if no ostname) */
665 if ((ostname == NULL) ||
666 (strncmp(buffer, ostname, len) == 0)) {
677 * Open a Lustre file.
679 * \param name the name of the file to be opened
680 * \param flags access mode, see flags in open(2)
681 * \param mode permission of the file if it is created, see mode in open(2)
682 * \param param stripe pattern of the newly created file
684 * \retval file descriptor of opened file
685 * \retval negative errno on failure
687 int llapi_file_open_param(const char *name, int flags, mode_t mode,
688 const struct llapi_stripe_param *param)
690 char fsname[MAX_OBD_NAME + 1] = { 0 };
691 char *pool_name = param->lsp_pool;
692 struct lov_user_md *lum = NULL;
693 size_t lum_size = sizeof(*lum);
696 /* Make sure we are on a Lustre file system */
697 rc = llapi_search_fsname(name, fsname);
699 llapi_error(LLAPI_MSG_ERROR, rc,
700 "'%s' is not on a Lustre filesystem",
705 /* Check if the stripe pattern is sane. */
706 rc = llapi_stripe_limit_check(param->lsp_stripe_size,
707 param->lsp_stripe_offset,
708 param->lsp_stripe_count,
709 param->lsp_stripe_pattern);
713 /* Make sure we have a good pool */
714 if (pool_name != NULL) {
715 /* in case user gives the full pool name <fsname>.<poolname>,
716 * strip the fsname */
717 char *ptr = strchr(pool_name, '.');
720 if (strcmp(pool_name, fsname) != 0) {
722 llapi_err_noerrno(LLAPI_MSG_ERROR,
723 "Pool '%s' is not on filesystem '%s'",
730 /* Make sure the pool exists and is non-empty */
731 rc = llapi_search_ost(fsname, pool_name, NULL);
733 char *err = rc == 0 ? "has no OSTs" : "does not exist";
735 llapi_err_noerrno(LLAPI_MSG_ERROR, "pool '%s.%s' %s",
736 fsname, pool_name, err);
740 lum_size = sizeof(struct lov_user_md_v3);
743 /* sanity check of target list */
744 if (param->lsp_is_specific) {
745 char ostname[MAX_OBD_NAME + 1];
749 for (i = 0; i < param->lsp_stripe_count; i++) {
750 snprintf(ostname, sizeof(ostname), "%s-OST%04x_UUID",
751 fsname, param->lsp_osts[i]);
752 rc = llapi_search_ost(fsname, pool_name, ostname);
757 llapi_error(LLAPI_MSG_ERROR, rc,
758 "%s: cannot find OST %s in %s",
765 /* Make sure stripe offset is in OST list. */
766 if (param->lsp_osts[i] == param->lsp_stripe_offset)
770 llapi_error(LLAPI_MSG_ERROR, -EINVAL,
771 "%s: stripe offset '%d' is not in the "
773 __func__, param->lsp_stripe_offset);
777 lum_size = lov_user_md_size(param->lsp_stripe_count,
778 LOV_USER_MAGIC_SPECIFIC);
781 lum = calloc(1, lum_size);
786 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
788 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
789 flags = O_DIRECTORY | O_RDONLY;
796 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
801 /* Initialize IOCTL striping pattern structure */
802 lum->lmm_magic = LOV_USER_MAGIC_V1;
803 lum->lmm_pattern = param->lsp_stripe_pattern;
804 lum->lmm_stripe_size = param->lsp_stripe_size;
805 lum->lmm_stripe_count = param->lsp_stripe_count;
806 lum->lmm_stripe_offset = param->lsp_stripe_offset;
807 if (pool_name != NULL) {
808 struct lov_user_md_v3 *lumv3 = (void *)lum;
810 lumv3->lmm_magic = LOV_USER_MAGIC_V3;
811 strncpy(lumv3->lmm_pool_name, pool_name, LOV_MAXPOOLNAME);
813 if (param->lsp_is_specific) {
814 struct lov_user_md_v3 *lumv3 = (void *)lum;
817 lumv3->lmm_magic = LOV_USER_MAGIC_SPECIFIC;
818 if (pool_name == NULL) {
819 /* LOV_USER_MAGIC_SPECIFIC uses v3 format plus specified
820 * OST list, therefore if pool is not specified we have
821 * to pack a null pool name for placeholder. */
822 memset(lumv3->lmm_pool_name, 0, LOV_MAXPOOLNAME);
825 for (i = 0; i < param->lsp_stripe_count; i++)
826 lumv3->lmm_objects[i].l_ost_idx = param->lsp_osts[i];
829 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, lum) != 0) {
830 char *errmsg = "stripe already set";
833 if (errno != EEXIST && errno != EALREADY)
834 errmsg = strerror(errno);
836 llapi_err_noerrno(LLAPI_MSG_ERROR,
837 "error on ioctl "LPX64" for '%s' (%d): %s",
838 (__u64)LL_IOC_LOV_SETSTRIPE, name, fd,
850 int llapi_file_open_pool(const char *name, int flags, int mode,
851 unsigned long long stripe_size, int stripe_offset,
852 int stripe_count, int stripe_pattern, char *pool_name)
854 const struct llapi_stripe_param param = {
855 .lsp_stripe_size = stripe_size,
856 .lsp_stripe_count = stripe_count,
857 .lsp_stripe_pattern = stripe_pattern,
858 .lsp_stripe_offset = stripe_offset,
859 .lsp_pool = pool_name
861 return llapi_file_open_param(name, flags, mode, ¶m);
864 int llapi_file_open(const char *name, int flags, int mode,
865 unsigned long long stripe_size, int stripe_offset,
866 int stripe_count, int stripe_pattern)
868 return llapi_file_open_pool(name, flags, mode, stripe_size,
869 stripe_offset, stripe_count,
870 stripe_pattern, NULL);
873 int llapi_file_create(const char *name, unsigned long long stripe_size,
874 int stripe_offset, int stripe_count, int stripe_pattern)
878 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
879 stripe_offset, stripe_count, stripe_pattern,
888 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
889 int stripe_offset, int stripe_count,
890 int stripe_pattern, char *pool_name)
894 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
895 stripe_offset, stripe_count, stripe_pattern,
904 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
905 int stripe_count, int stripe_pattern,
906 const char *pool_name)
908 struct lmv_user_md lum = { 0 };
912 lum.lum_magic = LMV_USER_MAGIC;
913 lum.lum_stripe_offset = stripe_offset;
914 lum.lum_stripe_count = stripe_count;
915 lum.lum_hash_type = stripe_pattern;
916 if (pool_name != NULL) {
917 if (strlen(pool_name) >= sizeof(lum.lum_pool_name)) {
918 llapi_err_noerrno(LLAPI_MSG_ERROR,
919 "error LL_IOC_LMV_SET_DEFAULT_STRIPE '%s'"
920 ": too large pool name: %s", name, pool_name);
923 strncpy(lum.lum_pool_name, pool_name,
924 sizeof(lum.lum_pool_name));
927 fd = open(name, O_DIRECTORY | O_RDONLY);
930 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
934 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lum);
936 char *errmsg = "stripe already set";
938 if (errno != EEXIST && errno != EALREADY)
939 errmsg = strerror(errno);
941 llapi_err_noerrno(LLAPI_MSG_ERROR,
942 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
949 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
950 int stripe_count, int stripe_pattern,
951 const char *pool_name)
953 struct lmv_user_md lmu = { 0 };
954 struct obd_ioctl_data data = { 0 };
957 char *dirpath = NULL;
958 char *namepath = NULL;
964 dirpath = strdup(name);
965 namepath = strdup(name);
966 if (!dirpath || !namepath)
969 lmu.lum_magic = LMV_USER_MAGIC;
970 lmu.lum_stripe_offset = stripe_offset;
971 lmu.lum_stripe_count = stripe_count;
972 lmu.lum_hash_type = stripe_pattern;
973 if (pool_name != NULL) {
974 if (strlen(pool_name) > LOV_MAXPOOLNAME) {
975 llapi_err_noerrno(LLAPI_MSG_ERROR,
976 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
977 "pool name: %s", name, pool_name);
981 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
984 filename = basename(namepath);
985 dir = dirname(dirpath);
987 data.ioc_inlbuf1 = (char *)filename;
988 data.ioc_inllen1 = strlen(filename) + 1;
989 data.ioc_inlbuf2 = (char *)&lmu;
990 data.ioc_inllen2 = sizeof(struct lmv_user_md);
991 data.ioc_type = mode;
992 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
994 llapi_error(LLAPI_MSG_ERROR, rc,
995 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
1000 fd = open(dir, O_DIRECTORY | O_RDONLY);
1003 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
1007 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
1008 char *errmsg = "stripe already set";
1010 if (errno != EEXIST && errno != EALREADY)
1011 errmsg = strerror(errno);
1013 llapi_err_noerrno(LLAPI_MSG_ERROR,
1014 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
1024 int llapi_direntry_remove(char *dname)
1026 char *dirpath = NULL;
1027 char *namepath = NULL;
1033 dirpath = strdup(dname);
1034 namepath = strdup(dname);
1035 if (!dirpath || !namepath)
1038 filename = basename(namepath);
1040 dir = dirname(dirpath);
1042 fd = open(dir, O_DIRECTORY | O_RDONLY);
1045 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
1050 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
1051 char *errmsg = strerror(errno);
1052 llapi_err_noerrno(LLAPI_MSG_ERROR,
1053 "error on ioctl "LPX64" for '%s' (%d): %s",
1054 (__u64)LL_IOC_LMV_SETSTRIPE, filename,
1066 * Find the fsname, the full path, and/or an open fd.
1067 * Either the fsname or path must not be NULL
1069 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
1072 char buf[PATH_MAX], mntdir[PATH_MAX];
1075 int idx = 0, len = 0, mntlen, fd;
1078 /* get the mount point */
1079 fp = setmntent(MOUNTED, "r");
1082 llapi_error(LLAPI_MSG_ERROR, rc,
1083 "setmntent(%s) failed", MOUNTED);
1087 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
1090 if (!llapi_is_lustre_mnt(&mnt))
1093 if ((want & WANT_INDEX) && (idx++ != index))
1096 mntlen = strlen(mnt.mnt_dir);
1097 ptr = strrchr(mnt.mnt_fsname, '/');
1098 /* thanks to the call to llapi_is_lustre_mnt() above,
1099 * we are sure that mnt.mnt_fsname contains ":/",
1100 * so ptr should never be NULL */
1105 /* Check the fsname for a match, if given */
1106 if (!(want & WANT_FSNAME) && fsname != NULL &&
1107 (strlen(fsname) > 0) && (strcmp(ptr, fsname) != 0))
1110 /* If the path isn't set return the first one we find */
1111 if (path == NULL || strlen(path) == 0) {
1112 strcpy(mntdir, mnt.mnt_dir);
1113 if ((want & WANT_FSNAME) && fsname != NULL)
1114 strcpy(fsname, ptr);
1117 /* Otherwise find the longest matching path */
1118 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1119 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1120 strcpy(mntdir, mnt.mnt_dir);
1122 if ((want & WANT_FSNAME) && fsname != NULL)
1123 strcpy(fsname, ptr);
1131 if ((want & WANT_PATH) && path != NULL)
1132 strcpy(path, mntdir);
1133 if (want & WANT_FD) {
1134 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1137 llapi_error(LLAPI_MSG_ERROR, rc,
1138 "error opening '%s'", mntdir);
1144 } else if (want & WANT_ERROR)
1145 llapi_err_noerrno(LLAPI_MSG_ERROR,
1146 "can't find fs root for '%s': %d",
1147 (want & WANT_PATH) ? fsname : path, rc);
1152 * search lustre mounts
1154 * Calling this function will return to the user the mount point, mntdir, and
1155 * the file system name, fsname, if the user passed a buffer to this routine.
1157 * The user inputs are pathname and index. If the pathname is supplied then
1158 * the value of the index will be ignored. The pathname will return data if
1159 * the pathname is located on a lustre mount. Index is used to pick which
1160 * mount point you want in the case of multiple mounted lustre file systems.
1161 * See function lfs_osts in lfs.c for an example of the index use.
1163 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1166 int want = WANT_PATH, idx = -1;
1168 if (!pathname || pathname[0] == '\0') {
1172 strcpy(mntdir, pathname);
1175 want |= WANT_FSNAME;
1176 return get_root_path(want, fsname, NULL, mntdir, idx);
1179 /* Given a path, find the corresponding Lustre fsname */
1180 int llapi_search_fsname(const char *pathname, char *fsname)
1185 path = realpath(pathname, NULL);
1187 char buf[PATH_MAX], *ptr;
1190 if (pathname[0] != '/') {
1191 /* Need an absolute path, but realpath() only works for
1192 * pathnames that actually exist. We go through the
1193 * extra hurdle of dirname(getcwd() + pathname) in
1194 * case the relative pathname contains ".." in it. */
1195 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1197 rc = strlcat(buf, "/", sizeof(buf));
1198 if (rc >= sizeof(buf))
1201 rc = strlcat(buf, pathname, sizeof(buf));
1202 if (rc >= sizeof(buf))
1204 path = realpath(buf, NULL);
1206 ptr = strrchr(buf, '/');
1210 path = realpath(buf, NULL);
1213 llapi_error(LLAPI_MSG_ERROR, rc,
1214 "pathname '%s' cannot expand",
1220 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1225 int llapi_search_rootpath(char *pathname, const char *fsname)
1227 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1230 int llapi_getname(const char *path, char *buf, size_t size)
1232 struct obd_uuid uuid_buf;
1233 char *uuid = uuid_buf.uuid;
1236 memset(&uuid_buf, 0, sizeof(uuid_buf));
1237 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1241 /* We want to turn lustre-clilov-ffff88002738bc00 into
1242 * lustre-ffff88002738bc00. */
1244 nr = snprintf(buf, size, "%.*s-%s",
1245 (int) (strlen(uuid) - 24), uuid,
1246 uuid + strlen(uuid) - 16);
1256 * find the pool directory path under /proc
1257 * (can be also used to test if a fsname is known)
1259 static int poolpath(char *fsname, char *pathname, char *pool_pathname)
1262 char pattern[PATH_MAX + 1];
1263 char buffer[PATH_MAX];
1265 if (fsname == NULL) {
1266 rc = llapi_search_fsname(pathname, buffer);
1270 strcpy(pathname, fsname);
1273 snprintf(pattern, PATH_MAX, "/proc/fs/lustre/lov/%s-*/pools", fsname);
1274 rc = first_match(pattern, buffer);
1278 /* in fsname test mode, pool_pathname is NULL */
1279 if (pool_pathname != NULL)
1280 strcpy(pool_pathname, buffer);
1286 * Get the list of pool members.
1287 * \param poolname string of format \<fsname\>.\<poolname\>
1288 * \param members caller-allocated array of char*
1289 * \param list_size size of the members array
1290 * \param buffer caller-allocated buffer for storing OST names
1291 * \param buffer_size size of the buffer
1293 * \return number of members retrieved for this pool
1294 * \retval -error failure
1296 int llapi_get_poolmembers(const char *poolname, char **members,
1297 int list_size, char *buffer, int buffer_size)
1299 char fsname[PATH_MAX];
1301 char pathname[PATH_MAX];
1302 char path[PATH_MAX];
1309 /* name is FSNAME.POOLNAME */
1310 if (strlen(poolname) >= sizeof(fsname))
1312 strlcpy(fsname, poolname, sizeof(fsname));
1313 pool = strchr(fsname, '.');
1320 rc = poolpath(fsname, NULL, pathname);
1322 llapi_error(LLAPI_MSG_ERROR, rc,
1323 "Lustre filesystem '%s' not found",
1328 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1329 rc = snprintf(path, sizeof(path), "%s/%s", pathname, pool);
1330 if (rc >= sizeof(path))
1332 fd = fopen(path, "r");
1335 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open %s", path);
1340 while (fgets(buf, sizeof(buf), fd) != NULL) {
1341 if (nb_entries >= list_size) {
1345 buf[sizeof(buf) - 1] = '\0';
1347 tmp = strchr(buf, '\n');
1350 if (used + strlen(buf) + 1 > buffer_size) {
1355 strcpy(buffer + used, buf);
1356 members[nb_entries] = buffer + used;
1357 used += strlen(buf) + 1;
1367 * Get the list of pools in a filesystem.
1368 * \param name filesystem name or path
1369 * \param poollist caller-allocated array of char*
1370 * \param list_size size of the poollist array
1371 * \param buffer caller-allocated buffer for storing pool names
1372 * \param buffer_size size of the buffer
1374 * \return number of pools retrieved for this filesystem
1375 * \retval -error failure
1377 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1378 char *buffer, int buffer_size)
1380 char fsname[PATH_MAX + 1], rname[PATH_MAX + 1], pathname[PATH_MAX + 1];
1384 struct dirent *cookie = NULL;
1386 unsigned int nb_entries = 0;
1387 unsigned int used = 0;
1390 /* initialize output array */
1391 for (i = 0; i < list_size; i++)
1394 /* is name a pathname ? */
1395 ptr = strchr(name, '/');
1397 /* only absolute pathname is supported */
1401 if (!realpath(name, rname)) {
1403 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1408 rc = poolpath(NULL, rname, pathname);
1410 llapi_error(LLAPI_MSG_ERROR, rc, "'%s' is not"
1411 " a Lustre filesystem", name);
1414 if (strlen(rname) > sizeof(fsname)-1)
1416 strncpy(fsname, rname, sizeof(fsname));
1418 /* name is FSNAME */
1419 if (strlen(name) > sizeof(fsname)-1)
1421 strncpy(fsname, name, sizeof(fsname));
1422 rc = poolpath(fsname, NULL, pathname);
1425 llapi_error(LLAPI_MSG_ERROR, rc,
1426 "Lustre filesystem '%s' not found", name);
1430 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1431 dir = opendir(pathname);
1434 llapi_error(LLAPI_MSG_ERROR, rc,
1435 "Could not open pool list for '%s'",
1441 rc = readdir_r(dir, &pool, &cookie);
1445 llapi_error(LLAPI_MSG_ERROR, rc,
1446 "Error reading pool list for '%s'", name);
1448 } else if ((rc == 0) && (cookie == NULL)) {
1449 /* end of directory */
1453 /* ignore . and .. */
1454 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1457 /* check output bounds */
1458 if (nb_entries >= list_size) {
1463 /* +2 for '.' and final '\0' */
1464 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1470 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1471 poollist[nb_entries] = buffer + used;
1472 used += strlen(pool.d_name) + strlen(fsname) + 2;
1478 return ((rc != 0) ? rc : nb_entries);
1481 /* wrapper for lfs.c and obd.c */
1482 int llapi_poollist(const char *name)
1484 /* list of pool names (assume that pool count is smaller
1486 char **list, *buffer = NULL, *path = NULL, *fsname = NULL;
1487 int obdcount, bufsize, rc, nb, i;
1488 char *poolname = NULL, *tmp = NULL, data[16];
1493 if (name[0] != '/') {
1494 fsname = strdup(name);
1498 poolname = strchr(fsname, '.');
1502 path = (char *) name;
1505 rc = get_param_obdvar(fsname, path, "lov", "numobd",
1506 data, sizeof(data));
1509 obdcount = atoi(data);
1511 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1512 * and also an array to store the pointers for all that
1513 * allocated space. */
1515 bufsize = sizeof(struct obd_uuid) * obdcount;
1516 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1517 if (buffer == NULL) {
1521 list = (char **) (buffer + bufsize);
1524 /* name is a path or fsname */
1525 nb = llapi_get_poollist(name, list, obdcount,
1528 /* name is a pool name (<fsname>.<poolname>) */
1529 nb = llapi_get_poolmembers(name, list, obdcount,
1533 if (nb == -EOVERFLOW) {
1536 goto retry_get_pools;
1539 for (i = 0; i < nb; i++)
1540 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1541 rc = (nb < 0 ? nb : 0);
1550 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1551 void *data, struct dirent64 *de);
1553 #define OBD_NOT_FOUND (-1)
1555 static int common_param_init(struct find_param *param, char *path)
1557 int lum_size = get_mds_md_size(path);
1559 if (lum_size < PATH_MAX + 1)
1560 lum_size = PATH_MAX + 1;
1562 param->fp_lum_size = lum_size;
1563 param->fp_lmd = calloc(1, sizeof(lstat_t) + param->fp_lum_size);
1564 if (param->fp_lmd == NULL) {
1565 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1566 "error: allocation of %zu bytes for ioctl",
1567 sizeof(lstat_t) + param->fp_lum_size);
1571 param->fp_lmv_stripe_count = 256;
1572 param->fp_lmv_md = calloc(1,
1573 lmv_user_md_size(param->fp_lmv_stripe_count,
1575 if (param->fp_lmv_md == NULL) {
1576 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1577 "error: allocation of %d bytes for ioctl",
1578 lmv_user_md_size(param->fp_lmv_stripe_count,
1583 param->fp_got_uuids = 0;
1584 param->fp_obd_indexes = NULL;
1585 param->fp_obd_index = OBD_NOT_FOUND;
1586 if (!param->fp_migrate)
1587 param->fp_mdt_index = OBD_NOT_FOUND;
1591 static void find_param_fini(struct find_param *param)
1593 if (param->fp_obd_indexes)
1594 free(param->fp_obd_indexes);
1597 free(param->fp_lmd);
1599 if (param->fp_lmv_md)
1600 free(param->fp_lmv_md);
1603 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1604 struct dirent64 *de)
1606 struct find_param *param = data;
1612 /* set errno upon failure */
1613 static DIR *opendir_parent(char *path)
1619 fname = strrchr(path, '/');
1621 return opendir(".");
1625 parent = opendir(path);
1630 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1635 param->fp_lmv_md->lum_stripe_count = param->fp_lmv_stripe_count;
1636 if (param->fp_get_default_lmv)
1637 param->fp_lmv_md->lum_magic = LMV_USER_MAGIC;
1639 param->fp_lmv_md->lum_magic = LMV_MAGIC_V1;
1641 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, param->fp_lmv_md);
1642 if (errno == E2BIG && ret != 0) {
1646 stripe_count = (__u32)param->fp_lmv_md->lum_stripe_count;
1647 if (stripe_count <= param->fp_lmv_stripe_count)
1650 free(param->fp_lmv_md);
1651 param->fp_lmv_stripe_count = stripe_count;
1652 lmv_size = lmv_user_md_size(stripe_count, LMV_MAGIC_V1);
1653 param->fp_lmv_md = malloc(lmv_size);
1654 if (param->fp_lmv_md == NULL) {
1655 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1656 "error: allocation of %d bytes for ioctl",
1657 lmv_user_md_size(param->fp_lmv_stripe_count,
1666 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1667 struct lov_user_mds_data *lmd, int lumlen)
1669 lstat_t *st = &lmd->lmd_st;
1672 if (parent == NULL && dir == NULL)
1676 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1677 } else if (parent) {
1678 char *fname = strrchr(path, '/');
1680 /* To avoid opening, locking, and closing each file on the
1681 * client if that is not needed. The GETFILEINFO ioctl can
1682 * be done on the patent dir with a single open for all
1683 * files in that directory, and it also doesn't pollute the
1684 * client dcache with millions of dentries when traversing
1685 * a large filesystem. */
1686 fname = (fname == NULL ? path : fname + 1);
1687 /* retrieve needed file info */
1688 strlcpy((char *)lmd, fname, lumlen);
1689 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1693 if (errno == ENOTTY) {
1694 /* ioctl is not supported, it is not a lustre fs.
1695 * Do the regular lstat(2) instead. */
1696 ret = lstat_f(path, st);
1699 llapi_error(LLAPI_MSG_ERROR, ret,
1700 "error: %s: lstat failed for %s",
1703 } else if (errno == ENOENT) {
1705 llapi_error(LLAPI_MSG_WARN, ret,
1706 "warning: %s: %s does not exist",
1708 } else if (errno != EISDIR) {
1710 llapi_error(LLAPI_MSG_ERROR, ret,
1711 "%s ioctl failed for %s.",
1712 dir ? "LL_IOC_MDC_GETINFO" :
1713 "IOC_MDC_GETFILEINFO", path);
1716 llapi_error(LLAPI_MSG_ERROR, ret,
1717 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1724 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1725 semantic_func_t sem_init,
1726 semantic_func_t sem_fini, void *data,
1727 struct dirent64 *de)
1729 struct find_param *param = (struct find_param *)data;
1730 struct dirent64 *dent;
1738 if (!d && errno != ENOTDIR) {
1740 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1743 } else if (!d && !parent) {
1744 /* ENOTDIR. Open the parent dir. */
1745 p = opendir_parent(path);
1752 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1758 while ((dent = readdir64(d)) != NULL) {
1761 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1764 /* Don't traverse .lustre directory */
1765 if (!(strcmp(dent->d_name, dot_lustre_name)))
1769 if ((len + dent->d_reclen + 2) > size) {
1770 llapi_err_noerrno(LLAPI_MSG_ERROR,
1771 "error: %s: string buffer is too small",
1776 strcat(path, dent->d_name);
1778 if (dent->d_type == DT_UNKNOWN) {
1779 lstat_t *st = ¶m->fp_lmd->lmd_st;
1781 rc = get_lmd_info(path, d, NULL, param->fp_lmd,
1782 param->fp_lum_size);
1784 dent->d_type = IFTODT(st->st_mode);
1791 switch (dent->d_type) {
1793 llapi_err_noerrno(LLAPI_MSG_ERROR,
1794 "error: %s: '%s' is UNKNOWN type %d",
1795 __func__, dent->d_name, dent->d_type);
1798 rc = llapi_semantic_traverse(path, size, d, sem_init,
1799 sem_fini, data, dent);
1800 if (rc != 0 && ret == 0)
1806 rc = sem_init(path, d, NULL, data, dent);
1807 if (rc < 0 && ret == 0)
1810 if (sem_fini && rc == 0)
1811 sem_fini(path, d, NULL, data, dent);
1819 sem_fini(path, parent, &d, data, de);
1828 static int param_callback(char *path, semantic_func_t sem_init,
1829 semantic_func_t sem_fini, struct find_param *param)
1831 int ret, len = strlen(path);
1834 if (len > PATH_MAX) {
1836 llapi_error(LLAPI_MSG_ERROR, ret,
1837 "Path name '%s' is too long", path);
1841 buf = (char *)malloc(PATH_MAX + 1);
1845 strlcpy(buf, path, PATH_MAX + 1);
1846 ret = common_param_init(param, buf);
1850 param->fp_depth = 0;
1852 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1853 sem_fini, param, NULL);
1855 find_param_fini(param);
1857 return ret < 0 ? ret : 0;
1860 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1862 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1865 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1870 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1872 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1875 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1880 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1884 fd = open(path, O_RDONLY);
1887 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1891 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1897 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1901 fd = open(path, O_RDONLY);
1904 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1908 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1919 * If uuidp is NULL, return the number of available obd uuids.
1920 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1921 * there are more OSTs than allocated to uuidp, then an error is returned with
1922 * the ost_count set to number of available obd uuids.
1924 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1925 int *ost_count, enum tgt_type type)
1927 struct obd_uuid name;
1931 int rc = 0, index = 0;
1933 /* Get the lov name */
1934 if (type == LOV_TYPE) {
1935 rc = llapi_file_fget_lov_uuid(fd, &name);
1939 rc = llapi_file_fget_lmv_uuid(fd, &name);
1944 /* Now get the ost uuids from /proc */
1945 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1946 type == LOV_TYPE ? "lov" : "lmv", name.uuid);
1947 fp = fopen(buf, "r");
1950 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1954 snprintf(format, sizeof(format),
1955 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1956 while (fgets(buf, sizeof(buf), fp) != NULL) {
1957 if (uuidp && (index < *ost_count)) {
1958 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
1966 if (uuidp && (index > *ost_count))
1973 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1975 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1978 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1983 root = opendir(mnt);
1986 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1991 rc = ioctl(dirfd(root), LL_IOC_GETOBDCOUNT, count);
1999 /* Check if user specified value matches a real uuid. Ignore _UUID,
2000 * -osc-4ba41334, other trailing gunk in comparison.
2001 * @param real_uuid ends in "_UUID"
2002 * @param search_uuid may or may not end in "_UUID"
2004 int llapi_uuid_match(char *real_uuid, char *search_uuid)
2006 int cmplen = strlen(real_uuid);
2007 int searchlen = strlen(search_uuid);
2009 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
2011 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
2014 /* The UUIDs may legitimately be different lengths, if
2015 * the system was upgraded from an older version. */
2016 if (cmplen != searchlen)
2019 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
2022 /* Here, param->fp_obd_uuid points to a single obduuid, the index of which is
2023 * returned in param->fp_obd_index */
2024 static int setup_obd_uuid(DIR *dir, char *dname, struct find_param *param)
2026 struct obd_uuid obd_uuid;
2032 if (param->fp_got_uuids)
2035 /* Get the lov/lmv name */
2036 if (param->fp_get_lmv)
2037 rc = llapi_file_fget_lmv_uuid(dirfd(dir), &obd_uuid);
2039 rc = llapi_file_fget_lov_uuid(dirfd(dir), &obd_uuid);
2041 if (rc != -ENOTTY) {
2042 llapi_error(LLAPI_MSG_ERROR, rc,
2043 "error: can't get lov name: %s", dname);
2050 param->fp_got_uuids = 1;
2052 /* Now get the ost uuids from /proc */
2053 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
2054 param->fp_get_lmv ? "lmv" : "lov", obd_uuid.uuid);
2055 fp = fopen(buf, "r");
2058 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
2062 if (!param->fp_obd_uuid && !param->fp_quiet && !param->fp_obds_printed)
2063 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
2064 param->fp_get_lmv ? "MDTS" : "OBDS:");
2066 snprintf(format, sizeof(format),
2067 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
2068 while (fgets(buf, sizeof(buf), fp) != NULL) {
2071 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
2074 if (param->fp_obd_uuid) {
2075 if (llapi_uuid_match(obd_uuid.uuid,
2076 param->fp_obd_uuid->uuid)) {
2077 param->fp_obd_index = index;
2080 } else if (!param->fp_quiet && !param->fp_obds_printed) {
2081 /* Print everything */
2082 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
2085 param->fp_obds_printed = 1;
2089 if (param->fp_obd_uuid && (param->fp_obd_index == OBD_NOT_FOUND)) {
2090 llapi_err_noerrno(LLAPI_MSG_ERROR,
2091 "error: %s: unknown obduuid: %s",
2092 __func__, param->fp_obd_uuid->uuid);
2099 /* In this case, param->fp_obd_uuid will be an array of obduuids and
2100 * obd index for all these obduuids will be returned in
2101 * param->fp_obd_indexes */
2102 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
2103 int num_obds, int **obdindexes, int *obdindex,
2106 int ret, obdcount, obd_valid = 0, obdnum;
2108 struct obd_uuid *uuids = NULL;
2112 if (type == LOV_TYPE)
2113 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
2115 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
2119 obdcount = atoi(buf);
2120 uuids = (struct obd_uuid *)malloc(obdcount *
2121 sizeof(struct obd_uuid));
2126 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
2128 struct obd_uuid *uuids_temp;
2130 if (ret == -EOVERFLOW) {
2131 uuids_temp = realloc(uuids, obdcount *
2132 sizeof(struct obd_uuid));
2133 if (uuids_temp != NULL) {
2135 goto retry_get_uuids;
2141 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2145 indexes = malloc(num_obds * sizeof(*obdindex));
2146 if (indexes == NULL) {
2151 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2154 /* The user may have specified a simple index */
2155 i = strtol(obduuids[obdnum].uuid, &end, 0);
2156 if (end && *end == '\0' && i < obdcount) {
2157 indexes[obdnum] = i;
2160 for (i = 0; i < obdcount; i++) {
2161 if (llapi_uuid_match(uuids[i].uuid,
2162 obduuids[obdnum].uuid)) {
2163 indexes[obdnum] = i;
2169 if (i >= obdcount) {
2170 indexes[obdnum] = OBD_NOT_FOUND;
2171 llapi_err_noerrno(LLAPI_MSG_ERROR,
2172 "error: %s: unknown obduuid: %s",
2173 __func__, obduuids[obdnum].uuid);
2179 *obdindex = OBD_NOT_FOUND;
2181 *obdindex = obd_valid;
2183 *obdindexes = indexes;
2191 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2195 if (param->fp_mdt_uuid) {
2196 ret = setup_indexes(dir, path, param->fp_mdt_uuid,
2198 ¶m->fp_mdt_indexes,
2199 ¶m->fp_mdt_index, LMV_TYPE);
2204 if (param->fp_obd_uuid) {
2205 ret = setup_indexes(dir, path, param->fp_obd_uuid,
2207 ¶m->fp_obd_indexes,
2208 ¶m->fp_obd_index, LOV_TYPE);
2213 param->fp_got_uuids = 1;
2218 int llapi_ostlist(char *path, struct find_param *param)
2223 dir = opendir(path);
2227 ret = setup_obd_uuid(dir, path, param);
2234 * Given a filesystem name, or a pathname of a file on a lustre filesystem,
2235 * tries to determine the path to the filesystem's clilov directory under /proc
2237 * fsname is limited to MTI_NAME_MAXLEN in lustre_idl.h
2238 * The NUL terminator is compensated by the additional "%s" bytes. */
2239 #define LOV_LEN (sizeof("/proc/fs/lustre/lov/%s-clilov-*") + MTI_NAME_MAXLEN)
2240 static int clilovpath(const char *fsname, const char *const pathname,
2244 char pattern[LOV_LEN];
2245 char buffer[PATH_MAX + 1];
2247 if (fsname == NULL) {
2248 rc = llapi_search_fsname(pathname, buffer);
2254 snprintf(pattern, sizeof(pattern), "/proc/fs/lustre/lov/%s-clilov-*",
2257 rc = first_match(pattern, buffer);
2261 strlcpy(clilovpath, buffer, sizeof(buffer));
2267 * Given the path to a stripe attribute proc file, tries to open and
2268 * read the attribute and return the value using the attr parameter
2270 static int sattr_read_attr(const char *const fpath,
2275 char line[PATH_MAX + 1];
2278 f = fopen(fpath, "r");
2281 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open '%s'", fpath);
2285 if (fgets(line, sizeof(line), f) != NULL) {
2288 llapi_error(LLAPI_MSG_ERROR, errno, "Cannot read from '%s'", fpath);
2297 * Tries to determine the default stripe attributes for a given filesystem. The
2298 * filesystem to check should be specified by fsname, or will be determined
2301 static int sattr_get_defaults(const char *const fsname,
2302 const char *const pathname,
2303 unsigned int *scount,
2304 unsigned int *ssize,
2305 unsigned int *soffset)
2308 char dpath[PATH_MAX + 1];
2309 char fpath[PATH_MAX + 1];
2311 rc = clilovpath(fsname, pathname, dpath);
2316 snprintf(fpath, PATH_MAX, "%s/stripecount", dpath);
2317 rc = sattr_read_attr(fpath, scount);
2323 snprintf(fpath, PATH_MAX, "%s/stripesize", dpath);
2324 rc = sattr_read_attr(fpath, ssize);
2330 snprintf(fpath, PATH_MAX, "%s/stripeoffset", dpath);
2331 rc = sattr_read_attr(fpath, soffset);
2340 * Tries to gather the default stripe attributes for a given filesystem. If
2341 * the attributes can be determined, they are cached for easy retreival the
2342 * next time they are needed. Only a single filesystem's attributes are
2345 static int sattr_cache_get_defaults(const char *const fsname,
2346 const char *const pathname,
2347 unsigned int *scount,
2348 unsigned int *ssize,
2349 unsigned int *soffset)
2352 char fsname[PATH_MAX + 1];
2353 unsigned int stripecount;
2354 unsigned int stripesize;
2355 unsigned int stripeoffset;
2361 char fsname_buf[PATH_MAX + 1];
2362 unsigned int tmp[3];
2364 if (fsname == NULL) {
2365 rc = llapi_search_fsname(pathname, fsname_buf);
2369 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2372 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2374 * Ensure all 3 sattrs (count, size, and offset) are
2375 * successfully retrieved and stored in tmp before writing to
2378 rc = sattr_get_defaults(fsname_buf, NULL, &tmp[0], &tmp[1],
2383 cache.stripecount = tmp[0];
2384 cache.stripesize = tmp[1];
2385 cache.stripeoffset = tmp[2];
2386 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2390 *scount = cache.stripecount;
2392 *ssize = cache.stripesize;
2394 *soffset = cache.stripeoffset;
2399 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2400 struct lov_user_ost_data_v1 *objects,
2401 int is_dir, int verbose, int depth,
2402 int raw, char *pool_name)
2404 char *prefix = is_dir ? "" : "lmm_";
2405 char *separator = "";
2408 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2409 lmm_oi_set_seq(&lum->lmm_oi, 0);
2410 if (verbose & VERBOSE_DETAIL)
2411 llapi_printf(LLAPI_MSG_NORMAL, "(Default) ");
2414 if (depth && path && ((verbose != VERBOSE_OBJID) || !is_dir))
2415 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2417 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2418 llapi_printf(LLAPI_MSG_NORMAL, "lmm_magic: 0x%08X\n",
2420 llapi_printf(LLAPI_MSG_NORMAL, "lmm_seq: "LPX64"\n",
2421 lmm_oi_seq(&lum->lmm_oi));
2422 llapi_printf(LLAPI_MSG_NORMAL, "lmm_object_id: "LPX64"\n",
2423 lmm_oi_id(&lum->lmm_oi));
2426 if (verbose & VERBOSE_COUNT) {
2427 if (verbose & ~VERBOSE_COUNT)
2428 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_count: ",
2431 if (!raw && lum->lmm_stripe_count == 0) {
2432 unsigned int scount;
2433 rc = sattr_cache_get_defaults(NULL, path,
2437 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2440 llapi_error(LLAPI_MSG_ERROR, rc,
2441 "Cannot determine default"
2444 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2445 lum->lmm_stripe_count ==
2446 (typeof(lum->lmm_stripe_count))(-1)
2447 ? -1 : lum->lmm_stripe_count);
2450 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2451 (__s16)lum->lmm_stripe_count);
2453 separator = is_dir ? " " : "\n";
2456 if (verbose & VERBOSE_SIZE) {
2457 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2458 if (verbose & ~VERBOSE_SIZE)
2459 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_size: ",
2461 if (is_dir && !raw && lum->lmm_stripe_size == 0) {
2463 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2466 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2468 llapi_error(LLAPI_MSG_ERROR, rc,
2469 "Cannot determine default"
2472 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2473 lum->lmm_stripe_size);
2475 separator = is_dir ? " " : "\n";
2478 if ((verbose & VERBOSE_LAYOUT) && !is_dir) {
2479 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2480 if (verbose & ~VERBOSE_LAYOUT)
2481 llapi_printf(LLAPI_MSG_NORMAL, "%spattern: ",
2483 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2487 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2488 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2489 if (verbose & ~VERBOSE_GENERATION)
2490 llapi_printf(LLAPI_MSG_NORMAL, "%slayout_gen: ",
2492 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2493 (int)lum->lmm_layout_gen);
2497 if (verbose & VERBOSE_OFFSET) {
2498 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2499 if (verbose & ~VERBOSE_OFFSET)
2500 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_offset: ",
2503 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2504 lum->lmm_stripe_offset ==
2505 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2506 lum->lmm_stripe_offset);
2508 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2509 objects[0].l_ost_idx);
2510 separator = is_dir ? " " : "\n";
2513 if ((verbose & VERBOSE_POOL) && (pool_name != NULL)) {
2514 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2515 if (verbose & ~VERBOSE_POOL)
2516 llapi_printf(LLAPI_MSG_NORMAL, "%spool: ",
2518 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2521 if (!is_dir || (is_dir && (verbose != VERBOSE_OBJID)))
2522 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2525 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2526 struct lov_user_ost_data_v1 *objects,
2527 char *path, int is_dir, int obdindex,
2528 int depth, int header, int raw)
2530 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2533 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2534 if (obdindex == objects[i].l_ost_idx) {
2542 lov_dump_user_lmm_header(lum, path, objects, is_dir, header,
2543 depth, raw, pool_name);
2545 if (!is_dir && (header & VERBOSE_OBJID) &&
2546 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2548 llapi_printf(LLAPI_MSG_NORMAL,
2549 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2551 for (i = 0; i < lum->lmm_stripe_count; i++) {
2552 int idx = objects[i].l_ost_idx;
2553 long long oid = ostid_id(&objects[i].l_ost_oi);
2554 long long gr = ostid_seq(&objects[i].l_ost_oi);
2555 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx)) {
2557 sprintf(fmt, "%s%s%s\n",
2558 "\t%6u\t%14llu\t%#13llx\t",
2559 (fid_seq_is_rsvd(gr) ||
2560 fid_seq_is_mdt0(gr)) ?
2561 "%14llu" : "%#14llx", "%s");
2562 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2564 obdindex == idx ? " *" : "");
2568 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2572 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2573 char *path, int obdindex, int depth, int verbose)
2575 struct lmv_user_mds_data *objects = lum->lum_objects;
2576 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2577 int i, obdstripe = 0;
2578 char *separator = "";
2580 if (obdindex != OBD_NOT_FOUND) {
2581 if (lum->lum_stripe_count == 0) {
2582 if (obdindex == lum->lum_stripe_offset)
2585 for (i = 0; i < lum->lum_stripe_count; i++) {
2586 if (obdindex == objects[i].lum_mds) {
2587 llapi_printf(LLAPI_MSG_NORMAL,
2602 /* show all information default */
2604 if (lum->lum_magic == LMV_USER_MAGIC)
2605 verbose = VERBOSE_POOL | VERBOSE_COUNT | VERBOSE_OFFSET;
2607 verbose = VERBOSE_OBJID;
2610 if (depth && path && ((verbose != VERBOSE_OBJID)))
2611 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2613 if (verbose & VERBOSE_COUNT) {
2614 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2615 if (verbose & ~VERBOSE_COUNT)
2616 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2617 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2618 (int)lum->lum_stripe_count);
2619 if (verbose & VERBOSE_OFFSET)
2625 if (verbose & VERBOSE_OFFSET) {
2626 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2627 if (verbose & ~VERBOSE_OFFSET)
2628 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2629 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2630 (int)lum->lum_stripe_offset);
2634 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2635 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2636 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2637 llapi_printf(LLAPI_MSG_NORMAL,
2638 "mdtidx\t\t FID[seq:oid:ver]\n");
2639 for (i = 0; i < lum->lum_stripe_count; i++) {
2640 int idx = objects[i].lum_mds;
2641 struct lu_fid *fid = &objects[i].lum_fid;
2642 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2643 llapi_printf(LLAPI_MSG_NORMAL,
2644 "%6u\t\t "DFID"\t\t%s\n",
2646 obdindex == idx ? " *" : "");
2651 if ((verbose & VERBOSE_POOL) && pool_name != NULL &&
2652 pool_name[0] != '\0') {
2653 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2654 if (verbose & ~VERBOSE_POOL)
2655 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2657 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2661 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2662 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2665 void llapi_lov_dump_user_lmm(struct find_param *param, char *path, int is_dir)
2669 if (param->fp_get_lmv || param->fp_get_default_lmv)
2670 magic = (__u32)param->fp_lmv_md->lum_magic;
2672 magic = *(__u32 *)¶m->fp_lmd->lmd_lmm; /* lum->lmm_magic */
2675 case LOV_USER_MAGIC_V1:
2676 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm, NULL,
2677 param->fp_lmd->lmd_lmm.lmm_objects,
2679 param->fp_obd_index, param->fp_max_depth,
2680 param->fp_verbose, param->fp_raw);
2682 case LOV_USER_MAGIC_V3: {
2683 char pool_name[LOV_MAXPOOLNAME + 1];
2684 struct lov_user_ost_data_v1 *objects;
2685 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
2687 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
2688 objects = lmmv3->lmm_objects;
2689 lov_dump_user_lmm_v1v3(¶m->fp_lmd->lmd_lmm,
2690 pool_name[0] == '\0' ? NULL : pool_name,
2691 objects, path, is_dir,
2692 param->fp_obd_index, param->fp_max_depth,
2693 param->fp_verbose, param->fp_raw);
2697 case LMV_USER_MAGIC: {
2698 char pool_name[LOV_MAXPOOLNAME + 1];
2699 struct lmv_user_md *lum;
2701 lum = (struct lmv_user_md *)param->fp_lmv_md;
2702 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
2703 lmv_dump_user_lmm(lum,
2704 pool_name[0] == '\0' ? NULL : pool_name,
2705 path, param->fp_obd_index,
2706 param->fp_max_depth, param->fp_verbose);
2710 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
2711 "(expecting one of %#x %#x %#x %#x)\n",
2712 *(__u32 *)¶m->fp_lmd->lmd_lmm,
2713 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
2714 LMV_USER_MAGIC, LMV_MAGIC_V1);
2719 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
2725 fname = strrchr(path, '/');
2727 /* It should be a file (or other non-directory) */
2728 if (fname == NULL) {
2729 dname = (char *)malloc(2);
2733 fname = (char *)path;
2735 dname = (char *)malloc(fname - path + 1);
2738 strncpy(dname, path, fname - path);
2739 dname[fname - path] = '\0';
2743 fd = open(dname, O_RDONLY);
2750 strcpy((char *)lum, fname);
2751 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
2754 if (close(fd) == -1 && rc == 0)
2761 int llapi_file_lookup(int dirfd, const char *name)
2763 struct obd_ioctl_data data = { 0 };
2768 if (dirfd < 0 || name == NULL)
2771 data.ioc_version = OBD_IOCTL_VERSION;
2772 data.ioc_len = sizeof(data);
2773 data.ioc_inlbuf1 = (char *)name;
2774 data.ioc_inllen1 = strlen(name) + 1;
2776 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
2778 llapi_error(LLAPI_MSG_ERROR, rc,
2779 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
2784 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
2790 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2791 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2793 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2794 * The table below gives the answers for the specified parameters (value and
2795 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2796 * --------------------------------------
2797 * 1 | file > limit; sign > 0 | -1 / -1 |
2798 * 2 | file = limit; sign > 0 | -1 / -1 |
2799 * 3 | file < limit; sign > 0 | ? / 1 |
2800 * 4 | file > limit; sign = 0 | -1 / -1 |
2801 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2802 * 6 | file < limit; sign = 0 | ? / -1 |
2803 * 7 | file > limit; sign < 0 | 1 / 1 |
2804 * 8 | file = limit; sign < 0 | ? / -1 |
2805 * 9 | file < limit; sign < 0 | ? / -1 |
2806 * --------------------------------------
2807 * Note: 5th actually means that the value is within the interval
2808 * (limit - margin, limit]. */
2809 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2810 int sign, int negopt, unsigned long long margin,
2816 /* Drop the fraction of margin (of days). */
2817 if (file + margin <= limit)
2819 } else if (sign == 0) {
2820 if (file <= limit && file + margin > limit)
2822 else if (file + margin <= limit)
2824 } else if (sign < 0) {
2831 return negopt ? ~ret + 1 : ret;
2834 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
2835 * Return -1 or 1 if file timestamp does not or does match the given criteria
2836 * correspondingly. Return 0 if the MDS time is being checked and there are
2837 * attributes on OSTs and it is not yet clear if the timespamp matches.
2839 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
2840 * updated timestamps. */
2841 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
2846 /* Check if file is accepted. */
2847 if (param->fp_atime) {
2848 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
2849 param->fp_asign, param->fp_exclude_atime,
2856 if (param->fp_mtime) {
2857 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
2858 param->fp_msign, param->fp_exclude_mtime,
2863 /* If the previous check matches, but this one is not yet clear,
2864 * we should return 0 to do an RPC on OSTs. */
2869 if (param->fp_ctime) {
2870 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
2871 param->fp_csign, param->fp_exclude_ctime,
2876 /* If the previous check matches, but this one is not yet clear,
2877 * we should return 0 to do an RPC on OSTs. */
2886 * Check whether the stripes matches the indexes user provided
2890 static int check_obd_match(struct find_param *param)
2892 lstat_t *st = ¶m->fp_lmd->lmd_st;
2893 struct lov_user_ost_data_v1 *lmm_objects;
2896 if (param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND)
2899 if (!S_ISREG(st->st_mode))
2902 /* Only those files should be accepted, which have a
2903 * stripe on the specified OST. */
2904 if (!param->fp_lmd->lmd_lmm.lmm_stripe_count)
2907 if (param->fp_lmd->lmd_lmm.lmm_magic ==
2908 LOV_USER_MAGIC_V3) {
2909 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
2911 lmm_objects = lmmv3->lmm_objects;
2912 } else if (param->fp_lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) {
2913 lmm_objects = param->fp_lmd->lmd_lmm.lmm_objects;
2915 llapi_err_noerrno(LLAPI_MSG_ERROR, "%s:Unknown magic: 0x%08X\n",
2916 __func__, param->fp_lmd->lmd_lmm.lmm_magic);
2920 for (i = 0; i < param->fp_lmd->lmd_lmm.lmm_stripe_count; i++) {
2921 for (j = 0; j < param->fp_num_obds; j++) {
2922 if (param->fp_obd_indexes[j] ==
2923 lmm_objects[i].l_ost_idx) {
2924 if (param->fp_exclude_obd)
2931 if (param->fp_exclude_obd)
2937 static int check_mdt_match(struct find_param *param)
2941 if (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND)
2944 /* FIXME: For striped dir, we should get stripe information and check */
2945 for (i = 0; i < param->fp_num_mdts; i++) {
2946 if (param->fp_mdt_indexes[i] == param->fp_file_mdt_index)
2947 return !param->fp_exclude_mdt;
2950 if (param->fp_exclude_mdt)
2957 * Check whether the obd is active or not, if it is
2958 * not active, just print the object affected by this
2961 static int print_failed_tgt(struct find_param *param, char *path, int type)
2963 struct obd_statfs stat_buf;
2964 struct obd_uuid uuid_buf;
2967 LASSERT(type == LL_STATFS_LOV || type == LL_STATFS_LMV);
2969 memset(&stat_buf, 0, sizeof(struct obd_statfs));
2970 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
2971 ret = llapi_obd_statfs(path, type,
2972 param->fp_obd_index, &stat_buf,
2975 llapi_printf(LLAPI_MSG_NORMAL,
2976 "obd_uuid: %s failed %s ",
2977 param->fp_obd_uuid->uuid,
2984 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
2985 void *data, struct dirent64 *de)
2987 struct find_param *param = (struct find_param *)data;
2988 DIR *dir = dirp == NULL ? NULL : *dirp;
2989 int decision = 1; /* 1 is accepted; -1 is rejected. */
2990 lstat_t *st = ¶m->fp_lmd->lmd_st;
2992 int checked_type = 0;
2995 LASSERT(parent != NULL || dir != NULL);
2997 param->fp_lmd->lmd_lmm.lmm_stripe_count = 0;
2999 /* If a regular expression is presented, make the initial decision */
3000 if (param->fp_pattern != NULL) {
3001 char *fname = strrchr(path, '/');
3002 fname = (fname == NULL ? path : fname + 1);
3003 ret = fnmatch(param->fp_pattern, fname, 0);
3004 if ((ret == FNM_NOMATCH && !param->fp_exclude_pattern) ||
3005 (ret == 0 && param->fp_exclude_pattern))
3009 /* See if we can check the file type from the dirent. */
3010 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
3013 if (DTTOIF(de->d_type) == param->fp_type) {
3014 if (param->fp_exclude_type)
3017 if (!param->fp_exclude_type)
3024 /* Request MDS for the stat info if some of these parameters need
3025 * to be compared. */
3026 if (param->fp_obd_uuid || param->fp_mdt_uuid ||
3027 param->fp_check_uid || param->fp_check_gid ||
3028 param->fp_atime || param->fp_mtime || param->fp_ctime ||
3029 param->fp_check_pool || param->fp_check_size ||
3030 param->fp_check_stripe_count || param->fp_check_stripe_size ||
3031 param->fp_check_layout)
3034 if (param->fp_type != 0 && checked_type == 0)
3037 if (decision == 0) {
3038 ret = get_lmd_info(path, parent, dir, param->fp_lmd,
3039 param->fp_lum_size);
3040 if (ret == 0 && param->fp_lmd->lmd_lmm.lmm_magic == 0 &&
3041 (param->fp_check_pool || param->fp_check_stripe_count ||
3042 param->fp_check_stripe_size || param->fp_check_layout)) {
3043 struct lov_user_md *lmm = ¶m->fp_lmd->lmd_lmm;
3045 /* We need to "fake" the "use the default" values
3046 * since the lmm struct is zeroed out at this point. */
3047 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3048 lmm->lmm_pattern = 0xFFFFFFFF;
3050 ostid_set_seq(&lmm->lmm_oi,
3051 FID_SEQ_LOV_DEFAULT);
3052 lmm->lmm_stripe_size = 0;
3053 lmm->lmm_stripe_count = 0;
3054 lmm->lmm_stripe_offset = -1;
3056 if (ret == 0 && param->fp_mdt_uuid != NULL) {
3058 ret = llapi_file_fget_mdtidx(dirfd(dir),
3059 ¶m->fp_file_mdt_index);
3060 } else if (S_ISREG(st->st_mode)) {
3063 /* FIXME: we could get the MDT index from the
3064 * file's FID in lmd->lmd_lmm.lmm_oi without
3065 * opening the file, once we are sure that
3066 * LFSCK2 (2.6) has fixed up pre-2.0 LOV EAs.
3067 * That would still be an ioctl() to map the
3068 * FID to the MDT, but not an open RPC. */
3069 fd = open(path, O_RDONLY);
3071 ret = llapi_file_fget_mdtidx(fd,
3072 ¶m->fp_file_mdt_index);
3078 /* For a special file, we assume it resides on
3079 * the same MDT as the parent directory. */
3080 ret = llapi_file_fget_mdtidx(dirfd(parent),
3081 ¶m->fp_file_mdt_index);
3094 if (param->fp_type && !checked_type) {
3095 if ((st->st_mode & S_IFMT) == param->fp_type) {
3096 if (param->fp_exclude_type)
3099 if (!param->fp_exclude_type)
3105 if (param->fp_obd_uuid || param->fp_mdt_uuid) {
3106 if (lustre_fs && param->fp_got_uuids &&
3107 param->fp_dev != st->st_dev) {
3108 /* A lustre/lustre mount point is crossed. */
3109 param->fp_got_uuids = 0;
3110 param->fp_obds_printed = 0;
3111 param->fp_mdt_index = OBD_NOT_FOUND;
3112 param->fp_obd_index = OBD_NOT_FOUND;
3115 if (lustre_fs && !param->fp_got_uuids) {
3116 ret = setup_target_indexes(dir ? dir : parent, path,
3121 param->fp_dev = st->st_dev;
3122 } else if (!lustre_fs && param->fp_got_uuids) {
3123 /* A lustre/non-lustre mount point is crossed. */
3124 param->fp_got_uuids = 0;
3125 param->fp_mdt_index = OBD_NOT_FOUND;
3126 param->fp_obd_index = OBD_NOT_FOUND;
3130 if (param->fp_check_stripe_size) {
3131 decision = find_value_cmp(
3132 param->fp_lmd->lmd_lmm.lmm_stripe_size,
3133 param->fp_stripe_size,
3134 param->fp_stripe_size_sign,
3135 param->fp_exclude_stripe_size,
3136 param->fp_stripe_size_units, 0);
3141 if (param->fp_check_stripe_count) {
3142 decision = find_value_cmp(
3143 param->fp_lmd->lmd_lmm.lmm_stripe_count,
3144 param->fp_stripe_count,
3145 param->fp_stripe_count_sign,
3146 param->fp_exclude_stripe_count, 1, 0);
3151 if (param->fp_check_layout) {
3154 found = (param->fp_lmd->lmd_lmm.lmm_pattern & param->fp_layout);
3155 if ((param->fp_lmd->lmd_lmm.lmm_pattern == 0xFFFFFFFF) ||
3156 (found && param->fp_exclude_layout) ||
3157 (!found && !param->fp_exclude_layout)) {
3163 /* If an OBD UUID is specified but none matches, skip this file. */
3164 if ((param->fp_obd_uuid && param->fp_obd_index == OBD_NOT_FOUND) ||
3165 (param->fp_mdt_uuid && param->fp_mdt_index == OBD_NOT_FOUND))
3168 /* If an OST or MDT UUID is given, and some OST matches,
3170 if (param->fp_obd_index != OBD_NOT_FOUND ||
3171 param->fp_mdt_index != OBD_NOT_FOUND) {
3172 if (param->fp_obd_uuid) {
3173 if (check_obd_match(param)) {
3174 /* If no mdtuuid is given, we are done.
3175 * Otherwise, fall through to the mdtuuid
3177 if (!param->fp_mdt_uuid)
3184 if (param->fp_mdt_uuid) {
3185 if (check_mdt_match(param))
3192 if (param->fp_check_uid) {
3193 if (st->st_uid == param->fp_uid) {
3194 if (param->fp_exclude_uid)
3197 if (!param->fp_exclude_uid)
3202 if (param->fp_check_gid) {
3203 if (st->st_gid == param->fp_gid) {
3204 if (param->fp_exclude_gid)
3207 if (!param->fp_exclude_gid)
3212 if (param->fp_check_pool) {
3213 struct lov_user_md_v3 *lmmv3 = (void *)¶m->fp_lmd->lmd_lmm;
3215 /* empty requested pool is taken as no pool search => V1 */
3216 if (((param->fp_lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) &&
3217 (param->fp_poolname[0] == '\0')) ||
3218 ((param->fp_lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3219 (strncmp(lmmv3->lmm_pool_name,
3220 param->fp_poolname, LOV_MAXPOOLNAME) == 0)) ||
3221 ((param->fp_lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3222 (strcmp(param->fp_poolname, "*") == 0))) {
3223 if (param->fp_exclude_pool)
3226 if (!param->fp_exclude_pool)
3231 /* Check the time on mds. */
3233 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
3236 for_mds = lustre_fs ? (S_ISREG(st->st_mode) &&
3237 param->fp_lmd->lmd_lmm.lmm_stripe_count)
3239 decision = find_time_check(st, param, for_mds);
3244 /* If file still fits the request, ask ost for updated info.
3245 The regular stat is almost of the same speed as some new
3246 'glimpse-size-ioctl'. */
3248 if (param->fp_check_size && S_ISREG(st->st_mode) &&
3249 param->fp_lmd->lmd_lmm.lmm_stripe_count)
3252 if (param->fp_check_size && S_ISDIR(st->st_mode))
3256 /* For regular files with the stripe the decision may have not
3257 * been taken yet if *time or size is to be checked. */
3258 if (param->fp_obd_index != OBD_NOT_FOUND)
3259 print_failed_tgt(param, path, LL_STATFS_LOV);
3261 if (param->fp_mdt_index != OBD_NOT_FOUND)
3262 print_failed_tgt(param, path, LL_STATFS_LMV);
3265 ret = fstat_f(dirfd(dir), st);
3266 else if (de != NULL)
3267 ret = fstatat_f(dirfd(parent), de->d_name, st,
3268 AT_SYMLINK_NOFOLLOW);
3270 ret = lstat_f(path, st);
3273 if (errno == ENOENT) {
3274 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3275 "warning: %s: %s does not exist",
3280 llapi_error(LLAPI_MSG_ERROR, ret,
3281 "%s: IOC_LOV_GETINFO on %s failed",
3287 /* Check the time on osc. */
3288 decision = find_time_check(st, param, 0);
3293 if (param->fp_check_size)
3294 decision = find_value_cmp(st->st_size, param->fp_size,
3295 param->fp_size_sign,
3296 param->fp_exclude_size,
3297 param->fp_size_units, 0);
3299 if (decision != -1) {
3300 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3301 if (param->fp_zero_end)
3302 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3304 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3308 /* Do not get down anymore? */
3309 if (param->fp_depth == param->fp_max_depth)
3317 static int cb_migrate_mdt_init(char *path, DIR *parent, DIR **dirp,
3318 void *param_data, struct dirent64 *de)
3320 struct find_param *param = (struct find_param *)param_data;
3322 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3324 struct obd_ioctl_data data = { 0 };
3329 LASSERT(parent != NULL || dirp != NULL);
3333 if (parent == NULL) {
3334 dir = opendir_parent(path);
3338 llapi_error(LLAPI_MSG_ERROR, ret,
3339 "can not open %s", path);
3346 filename = basename(path);
3347 data.ioc_inlbuf1 = (char *)filename;
3348 data.ioc_inllen1 = strlen(filename) + 1;
3349 data.ioc_inlbuf2 = (char *)¶m->fp_mdt_index;
3350 data.ioc_inllen2 = sizeof(param->fp_mdt_index);
3351 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3353 llapi_error(LLAPI_MSG_ERROR, ret,
3354 "llapi_obd_statfs: error packing ioctl data");
3358 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
3361 fprintf(stderr, "%s migrate failed: %s (%d)\n",
3362 path, strerror(-ret), ret);
3364 } else if (param->fp_verbose & VERBOSE_DETAIL) {
3365 fprintf(stdout, "migrate %s to MDT%d\n",
3366 path, param->fp_mdt_index);
3371 /* If the directory is being migration, we need
3372 * close the directory after migration,
3373 * so the old directory cache will be cleanup
3374 * on the client side, and re-open to get the
3375 * new directory handle */
3376 *dirp = opendir(path);
3379 llapi_error(LLAPI_MSG_ERROR, ret,
3380 "%s: Failed to open '%s'", __func__, path);
3391 int llapi_migrate_mdt(char *path, struct find_param *param)
3393 return param_callback(path, cb_migrate_mdt_init, cb_common_fini, param);
3396 int llapi_mv(char *path, struct find_param *param)
3398 #if LUSTRE_VERSION_CODE > OBD_OCD_VERSION(2, 9, 53, 0)
3399 static bool printed;
3402 llapi_error(LLAPI_MSG_ERROR, -ESTALE,
3403 "llapi_mv() is deprecated, use llapi_migrate_mdt()\n");
3407 return llapi_migrate_mdt(path, param);
3410 int llapi_find(char *path, struct find_param *param)
3412 return param_callback(path, cb_find_init, cb_common_fini, param);
3416 * Get MDT number that the file/directory inode referenced
3417 * by the open fd resides on.
3418 * Return 0 and mdtidx on success, or -ve errno.
3420 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
3422 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
3427 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
3428 struct dirent64 *de)
3430 struct find_param *param = (struct find_param *)data;
3431 DIR *d = dirp == NULL ? NULL : *dirp;
3435 LASSERT(parent != NULL || d != NULL);
3438 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3439 } else /* if (parent) */ {
3442 fd = open(path, O_RDONLY | O_NOCTTY);
3444 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
3452 if (ret == -ENODATA) {
3453 if (!param->fp_obd_uuid)
3454 llapi_printf(LLAPI_MSG_NORMAL,
3455 "'%s' has no stripe info\n", path);
3457 } else if (ret == -ENOENT) {
3458 llapi_error(LLAPI_MSG_WARN, ret,
3459 "warning: %s: '%s' does not exist",
3462 } else if (ret == -ENOTTY) {
3463 llapi_error(LLAPI_MSG_ERROR, ret,
3464 "%s: '%s' not on a Lustre fs",
3467 llapi_error(LLAPI_MSG_ERROR, ret,
3468 "error: %s: '%s' failed get_mdtidx",
3474 if (param->fp_quiet || !(param->fp_verbose & VERBOSE_DETAIL))
3475 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
3477 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
3481 /* Do not go down anymore? */
3482 if (param->fp_depth == param->fp_max_depth)
3490 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
3491 struct dirent64 *de)
3493 struct find_param *param = (struct find_param *)data;
3494 DIR *d = dirp == NULL ? NULL : *dirp;
3497 LASSERT(parent != NULL || d != NULL);
3499 if (param->fp_obd_uuid) {
3500 param->fp_quiet = 1;
3501 ret = setup_obd_uuid(d ? d : parent, path, param);
3507 if (param->fp_get_lmv || param->fp_get_default_lmv) {
3508 ret = cb_get_dirstripe(path, d, param);
3510 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
3511 (void *)¶m->fp_lmd->lmd_lmm);
3514 } else if (parent && !param->fp_get_lmv && !param->fp_get_default_lmv) {
3515 char *fname = strrchr(path, '/');
3516 fname = (fname == NULL ? path : fname + 1);
3518 strlcpy((char *)¶m->fp_lmd->lmd_lmm, fname,
3519 param->fp_lum_size);
3521 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
3522 (void *)¶m->fp_lmd->lmd_lmm);
3528 if (errno == ENODATA && d != NULL) {
3529 /* We need to "fake" the "use the default" values
3530 * since the lmm struct is zeroed out at this point.
3531 * The magic needs to be set in order to satisfy
3532 * a check later on in the code path.
3533 * The object_seq needs to be set for the "(Default)"
3534 * prefix to be displayed. */
3535 if (param->fp_get_default_lmv) {
3536 struct lmv_user_md *lum = param->fp_lmv_md;
3538 lum->lum_magic = LMV_USER_MAGIC;
3539 lum->lum_stripe_count = 0;
3540 lum->lum_stripe_offset = -1;
3542 } else if (param->fp_get_lmv) {
3543 struct lmv_user_md *lum = param->fp_lmv_md;
3546 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3549 lum->lum_magic = LMV_MAGIC_V1;
3550 lum->lum_stripe_count = 0;
3551 lum->lum_stripe_offset = mdtidx;
3554 struct lov_user_md *lmm =
3555 ¶m->fp_lmd->lmd_lmm;
3557 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3559 ostid_set_seq(&lmm->lmm_oi,
3560 FID_SEQ_LOV_DEFAULT);
3561 lmm->lmm_stripe_count = 0;
3562 lmm->lmm_stripe_size = 0;
3563 lmm->lmm_stripe_offset = -1;
3566 } else if (errno == ENODATA && parent != NULL) {
3567 if (!param->fp_obd_uuid && !param->fp_mdt_uuid)
3568 llapi_printf(LLAPI_MSG_NORMAL,
3569 "%s has no stripe info\n", path);
3571 } else if (errno == ENOENT) {
3572 llapi_error(LLAPI_MSG_WARN, -ENOENT,
3573 "warning: %s: %s does not exist",
3576 } else if (errno == ENOTTY) {
3578 llapi_error(LLAPI_MSG_ERROR, ret,
3579 "%s: '%s' not on a Lustre fs?",
3584 llapi_error(LLAPI_MSG_ERROR, ret,
3585 "error: %s: %s failed for %s",
3586 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
3587 "IOC_MDC_GETFILESTRIPE", path);
3594 if (!(param->fp_verbose & VERBOSE_MDTINDEX))
3595 llapi_lov_dump_user_lmm(param, path, d ? 1 : 0);
3598 /* Do not get down anymore? */
3599 if (param->fp_depth == param->fp_max_depth)
3607 int llapi_getstripe(char *path, struct find_param *param)
3609 return param_callback(path, (param->fp_verbose & VERBOSE_MDTINDEX) ?
3610 cb_get_mdt_index : cb_getstripe,
3611 cb_common_fini, param);
3614 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
3615 struct obd_statfs *stat_buf,
3616 struct obd_uuid *uuid_buf)
3619 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3621 struct obd_ioctl_data data = { 0 };
3624 data.ioc_inlbuf1 = (char *)&type;
3625 data.ioc_inllen1 = sizeof(__u32);
3626 data.ioc_inlbuf2 = (char *)&index;
3627 data.ioc_inllen2 = sizeof(__u32);
3628 data.ioc_pbuf1 = (char *)stat_buf;
3629 data.ioc_plen1 = sizeof(struct obd_statfs);
3630 data.ioc_pbuf2 = (char *)uuid_buf;
3631 data.ioc_plen2 = sizeof(struct obd_uuid);
3633 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3635 llapi_error(LLAPI_MSG_ERROR, rc,
3636 "llapi_obd_statfs: error packing ioctl data");
3640 fd = open(path, O_RDONLY);
3641 if (errno == EISDIR)
3642 fd = open(path, O_DIRECTORY | O_RDONLY);
3645 rc = errno ? -errno : -EBADF;
3646 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
3648 /* If we can't even open a file on the filesystem (e.g. with
3649 * -ESHUTDOWN), force caller to exit or it will loop forever. */
3652 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
3654 rc = errno ? -errno : -EINVAL;
3660 #define MAX_STRING_SIZE 128
3662 int llapi_ping(char *obd_type, char *obd_name)
3664 char path[MAX_STRING_SIZE];
3668 snprintf(path, MAX_STRING_SIZE, "/proc/fs/lustre/%s/%s/ping",
3669 obd_type, obd_name);
3671 fd = open(path, O_WRONLY);
3674 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
3678 /* The purpose is to send a byte as a ping, whatever this byte is. */
3679 /* coverity[uninit_use_in_call] */
3680 rc = write(fd, buf, 1);
3690 int llapi_target_iterate(int type_num, char **obd_type,
3691 void *args, llapi_cb_t cb)
3693 char buf[MAX_STRING_SIZE];
3694 FILE *fp = fopen(DEVICES_LIST, "r");
3699 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
3703 while (fgets(buf, sizeof(buf), fp) != NULL) {
3704 char *obd_type_name = NULL;
3705 char *obd_name = NULL;
3706 char *obd_uuid = NULL;
3708 struct obd_statfs osfs_buffer;
3710 while(bufp[0] == ' ')
3713 for(i = 0; i < 3; i++) {
3714 obd_type_name = strsep(&bufp, " ");
3716 obd_name = strsep(&bufp, " ");
3717 obd_uuid = strsep(&bufp, " ");
3719 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
3721 for (i = 0; i < type_num; i++) {
3722 if (strcmp(obd_type_name, obd_type[i]) != 0)
3725 cb(obd_type_name, obd_name, obd_uuid, args);
3732 static void do_target_check(char *obd_type_name, char *obd_name,
3733 char *obd_uuid, void *args)
3737 rc = llapi_ping(obd_type_name, obd_name);
3738 if (rc == ENOTCONN) {
3739 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
3741 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
3743 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
3747 int llapi_target_check(int type_num, char **obd_type, char *dir)
3749 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
3752 #undef MAX_STRING_SIZE
3754 /* Is this a lustre fs? */
3755 int llapi_is_lustre_mnttype(const char *type)
3757 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
3760 /* Is this a lustre client fs? */
3761 int llapi_is_lustre_mnt(struct mntent *mnt)
3763 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
3764 strstr(mnt->mnt_fsname, ":/") != NULL);
3767 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
3772 root = opendir(mnt);
3775 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3779 rc = ioctl(dirfd(root), OBD_IOC_QUOTACTL, qctl);
3790 #include <sys/wait.h>
3794 static int rmtacl_notify(int ops)
3798 int found = 0, fd = 0, rc = 0;
3800 fp = setmntent(MOUNTED, "r");
3803 llapi_error(LLAPI_MSG_ERROR, rc,
3804 "error setmntent(%s)", MOUNTED);
3809 mnt = getmntent(fp);
3813 if (!llapi_is_lustre_mnt(mnt))
3816 fd = open(mnt->mnt_dir, O_RDONLY | O_DIRECTORY);
3819 llapi_error(LLAPI_MSG_ERROR, rc,
3820 "Can't open '%s'", mnt->mnt_dir);
3824 rc = ioctl(fd, LL_IOC_RMTACL, ops);
3828 llapi_error(LLAPI_MSG_ERROR, rc,
3829 "ioctl RMTACL on '%s' err %d",
3839 return ((rc != 0) ? rc : found);
3842 static char *next_token(char *p, int div)
3848 while (*p && *p != ':' && !isspace(*p))
3851 while (*p == ':' || isspace(*p))
3854 return *p ? p : NULL;
3857 static int rmtacl_name2id(char *name, int is_user)
3862 pw = getpwnam(name);
3866 return (int)(pw->pw_uid);
3870 gr = getgrnam(name);
3874 return (int)(gr->gr_gid);
3878 static int isodigit(int c)
3880 return (c >= '0' && c <= '7') ? 1 : 0;
3884 * Whether the name is just digits string (uid/gid) already or not.
3889 static int str_is_id(char *str)
3896 if (*str == 'x' || *str == 'X') { /* for Hex. */
3897 if (!isxdigit(*(++str)))
3900 while (isxdigit(*(++str)));
3901 } else if (isodigit(*str)) { /* for Oct. */
3902 while (isodigit(*(++str)));
3904 } else if (isdigit(*str)) { /* for Dec. */
3905 while (isdigit(*(++str)));
3908 return (*str == 0) ? 1 : 0;
3918 #define RMTACL_OPTNAME(name) name, sizeof(name) - 1
3920 static rmtacl_name_t rmtacl_namelist[] = {
3921 { RMTACL_OPTNAME("user:"), 1, 0 },
3922 { RMTACL_OPTNAME("group:"), 0, 0 },
3923 { RMTACL_OPTNAME("default:user:"), 1, 0 },
3924 { RMTACL_OPTNAME("default:group:"), 0, 0 },
3925 /* for --tabular option */
3926 { RMTACL_OPTNAME("user"), 1, 1 },
3927 { RMTACL_OPTNAME("group"), 0, 1 },
3931 static int rgetfacl_output(char *str)
3933 char *start = NULL, *end = NULL;
3934 int is_user = 0, n, id;
3941 for (rn = rmtacl_namelist; rn->name; rn++) {
3942 if(strncmp(str, rn->name, rn->length) == 0) {
3943 if (!rn->next_token)
3944 start = str + rn->length;
3946 start = next_token(str + rn->length, 0);
3947 is_user = rn->is_user;
3952 end = next_token(start, 1);
3953 if (end == NULL || start == end) {
3954 n = printf("%s", str);
3960 id = rmtacl_name2id(start, is_user);
3961 if (id == INVALID_ID) {
3962 if (str_is_id(start)) {
3964 n = printf("%s", str);
3967 } else if ((id == NOBODY_UID && is_user) ||
3968 (id == NOBODY_GID && !is_user)) {
3970 n = printf("%s", str);
3974 n = printf("%s%d%s", str, id, end);
3979 static int child_status(int status)
3981 return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
3984 static int do_rmtacl(int argc, char *argv[], int ops, int (output_func)(char *))
3987 int fd[2], status, rc;
3994 llapi_error(LLAPI_MSG_ERROR, rc, "Can't create pipe");
4001 llapi_error(LLAPI_MSG_ERROR, rc, "Can't fork");
4006 /* child process redirects its output. */
4009 if (dup2(fd[1], 1) < 0) {
4011 llapi_error(LLAPI_MSG_ERROR, rc,
4012 "Can't dup2 %d", fd[1]);
4022 status = rmtacl_notify(ops);
4026 exit(execvp(argv[0], argv));
4029 /* the following is parent process */
4030 fp = fdopen(fd[0], "r");
4033 llapi_error(LLAPI_MSG_ERROR, rc, "fdopen %d failed", fd[0]);
4039 while (fgets(buf, PIPE_BUF, fp) != NULL) {
4040 if (output_func(buf) < 0)
4041 fprintf(stderr, "WARNING: unexpected error!\n[%s]\n",
4047 if (waitpid(pid, &status, 0) < 0) {
4049 llapi_error(LLAPI_MSG_ERROR, rc, "waitpid %d failed", pid);
4053 return child_status(status);
4056 int llapi_lsetfacl(int argc, char *argv[])
4058 return do_rmtacl(argc, argv, RMT_LSETFACL, NULL);
4061 int llapi_lgetfacl(int argc, char *argv[])
4063 return do_rmtacl(argc, argv, RMT_LGETFACL, NULL);
4066 int llapi_rsetfacl(int argc, char *argv[])
4068 return do_rmtacl(argc, argv, RMT_RSETFACL, NULL);
4071 int llapi_rgetfacl(int argc, char *argv[])
4073 return do_rmtacl(argc, argv, RMT_RGETFACL, rgetfacl_output);
4076 int llapi_cp(int argc, char *argv[])
4080 rc = rmtacl_notify(RMT_RSETFACL);
4084 exit(execvp(argv[0], argv));
4087 int llapi_ls(int argc, char *argv[])
4091 rc = rmtacl_notify(RMT_LGETFACL);
4095 exit(execvp(argv[0], argv));
4098 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4099 * format must have %s%s, buf must be > 16
4100 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4101 * then buf = "lustre-MDT0000"
4103 static int get_mdtname(char *name, char *format, char *buf)
4105 char suffix[]="-MDT0000";
4106 int len = strlen(name);
4108 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4109 name[len - 5] = '\0';
4114 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4117 /* Not enough room to add suffix */
4118 llapi_err_noerrno(LLAPI_MSG_ERROR,
4119 "MDT name too long |%s|", name);
4124 return sprintf(buf, format, name, suffix);
4127 /** ioctl on filsystem root, with mdtindex sent as data
4128 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4129 * \param mdtidxp pointer to integer within data to be filled in with the
4130 * mdt index (0 if no mdt is specified). NULL won't be filled.
4132 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4140 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4141 Open root and parse mdt index. */
4142 if (mdtname[0] == '/') {
4144 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4145 (char *)mdtname, -1);
4147 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4149 ptr = fsname + strlen(fsname) - 8;
4151 index = strtol(ptr + 4, NULL, 10);
4152 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4156 llapi_err_noerrno(LLAPI_MSG_ERROR,
4157 "Can't open %s: %d\n", mdtname, rc);
4164 rc = ioctl(fd, opc, data);
4169 if (rc && want_error)
4170 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d err %d", opc, rc);
4176 /****** Changelog API ********/
4178 static int changelog_ioctl(const char *mdtname, int opc, int id,
4179 long long recno, int flags)
4181 struct ioc_changelog data;
4185 data.icc_recno = recno;
4186 data.icc_flags = flags;
4187 idx = (int *)(&data.icc_mdtindex);
4189 return root_ioctl(mdtname, opc, &data, idx, WANT_ERROR);
4192 #define CHANGELOG_PRIV_MAGIC 0xCA8E1080
4193 struct changelog_private {
4195 enum changelog_send_flag flags;
4196 struct lustre_kernelcomm kuc;
4199 /** Start reading from a changelog
4200 * @param priv Opaque private control structure
4201 * @param flags Start flags (e.g. CHANGELOG_FLAG_BLOCK)
4202 * @param device Report changes recorded on this MDT
4203 * @param startrec Report changes beginning with this record number
4204 * (just call llapi_changelog_fini when done; don't need an endrec)
4206 int llapi_changelog_start(void **priv, enum changelog_send_flag flags,
4207 const char *device, long long startrec)
4209 struct changelog_private *cp;
4213 /* Set up the receiver control struct */
4214 cp = calloc(1, sizeof(*cp));
4218 cp->magic = CHANGELOG_PRIV_MAGIC;
4221 /* Set up the receiver */
4222 rc = libcfs_ukuc_start(&cp->kuc, 0 /* no group registration */, 0);
4228 /* CHANGELOG_FLAG_JOBID will eventually become mandatory. Display a
4229 * warning if it's missing. */
4230 if (!(flags & CHANGELOG_FLAG_JOBID) && !warned) {
4231 llapi_err_noerrno(LLAPI_MSG_WARN, "warning: %s() called "
4232 "w/o CHANGELOG_FLAG_JOBID", __func__);
4236 /* Tell the kernel to start sending */
4237 rc = changelog_ioctl(device, OBD_IOC_CHANGELOG_SEND, cp->kuc.lk_wfd,
4239 /* Only the kernel reference keeps the write side open */
4240 close(cp->kuc.lk_wfd);
4241 cp->kuc.lk_wfd = LK_NOFD;
4243 /* frees and clears priv */
4244 llapi_changelog_fini(priv);
4255 /** Finish reading from a changelog */
4256 int llapi_changelog_fini(void **priv)
4258 struct changelog_private *cp = (struct changelog_private *)*priv;
4260 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4263 libcfs_ukuc_stop(&cp->kuc);
4270 * Convert all records to a same format according to the caller's wishes.
4271 * Default is CLF_VERSION | CLF_RENAME.
4272 * Add CLF_JOBID if explicitely requested.
4274 * \param rec The record to remap. It is expected to be big enough to
4275 * properly handle the final format.
4276 * \return 1 if anything changed. 0 otherwise.
4278 /** Read the next changelog entry
4279 * @param priv Opaque private control structure
4280 * @param rech Changelog record handle; record will be allocated here
4281 * @return 0 valid message received; rec is set
4285 #define DEFAULT_RECORD_FMT (CLF_VERSION | CLF_RENAME)
4286 int llapi_changelog_recv(void *priv, struct changelog_rec **rech)
4288 struct changelog_private *cp = (struct changelog_private *)priv;
4289 struct kuc_hdr *kuch;
4290 enum changelog_rec_flags rec_fmt = DEFAULT_RECORD_FMT;
4293 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4297 kuch = malloc(KUC_CHANGELOG_MSG_MAXSIZE);
4301 if (cp->flags & CHANGELOG_FLAG_JOBID)
4302 rec_fmt |= CLF_JOBID;
4305 rc = libcfs_ukuc_msg_get(&cp->kuc, (char *)kuch,
4306 KUC_CHANGELOG_MSG_MAXSIZE,
4307 KUC_TRANSPORT_CHANGELOG);
4311 if ((kuch->kuc_transport != KUC_TRANSPORT_CHANGELOG) ||
4312 ((kuch->kuc_msgtype != CL_RECORD) &&
4313 (kuch->kuc_msgtype != CL_EOF))) {
4314 llapi_err_noerrno(LLAPI_MSG_ERROR,
4315 "Unknown changelog message type %d:%d\n",
4316 kuch->kuc_transport, kuch->kuc_msgtype);
4321 if (kuch->kuc_msgtype == CL_EOF) {
4322 if (cp->flags & CHANGELOG_FLAG_FOLLOW) {
4331 /* Our message is a changelog_rec. Use pointer math to skip
4332 * kuch_hdr and point directly to the message payload. */
4333 *rech = (struct changelog_rec *)(kuch + 1);
4334 changelog_remap_rec(*rech, rec_fmt);
4344 /** Release the changelog record when done with it. */
4345 int llapi_changelog_free(struct changelog_rec **rech)
4348 /* We allocated memory starting at the kuc_hdr, but passed
4349 * the consumer a pointer to the payload.
4350 * Use pointer math to get back to the header.
4352 struct kuc_hdr *kuch = (struct kuc_hdr *)*rech - 1;
4359 int llapi_changelog_clear(const char *mdtname, const char *idstr,
4365 llapi_err_noerrno(LLAPI_MSG_ERROR,
4366 "can't purge negative records\n");
4370 id = strtol(idstr + strlen(CHANGELOG_USER_PREFIX), NULL, 10);
4371 if ((id == 0) || (strncmp(idstr, CHANGELOG_USER_PREFIX,
4372 strlen(CHANGELOG_USER_PREFIX)) != 0)) {
4373 llapi_err_noerrno(LLAPI_MSG_ERROR,
4374 "expecting id of the form '"
4375 CHANGELOG_USER_PREFIX
4376 "<num>'; got '%s'\n", idstr);
4380 return changelog_ioctl(mdtname, OBD_IOC_CHANGELOG_CLEAR, id, endrec, 0);
4383 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4384 int buflen, long long *recno, int *linkno)
4387 struct getinfo_fid2path *gf;
4390 while (*fidstr == '[')
4393 sscanf(fidstr, SFID, RFID(&fid));
4394 if (!fid_is_sane(&fid)) {
4395 llapi_err_noerrno(LLAPI_MSG_ERROR,
4396 "bad FID format [%s], should be [seq:oid:ver]"
4397 " (e.g. "DFID")\n", fidstr,
4398 (unsigned long long)FID_SEQ_NORMAL, 2, 0);
4402 gf = malloc(sizeof(*gf) + buflen);
4406 gf->gf_recno = *recno;
4407 gf->gf_linkno = *linkno;
4408 gf->gf_pathlen = buflen;
4410 /* Take path or fsname */
4411 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4414 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl err %d", rc);
4416 memcpy(buf, gf->gf_path, gf->gf_pathlen);
4417 if (buf[0] == '\0') { /* ROOT path */
4421 *recno = gf->gf_recno;
4422 *linkno = gf->gf_linkno;
4429 static int fid_from_lma(const char *path, const int fd, lustre_fid *fid)
4432 struct lustre_mdt_attrs *lma;
4436 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4438 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4441 lma = (struct lustre_mdt_attrs *)buf;
4442 fid_le_to_cpu(fid, &lma->lma_self_fid);
4446 int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid,
4451 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4460 int llapi_fd2fid(const int fd, lustre_fid *fid)
4464 memset(fid, 0, sizeof(*fid));
4466 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4467 if (rc == -EINVAL || rc == -ENOTTY)
4468 rc = fid_from_lma(NULL, fd, fid);
4473 int llapi_path2fid(const char *path, lustre_fid *fid)
4477 memset(fid, 0, sizeof(*fid));
4478 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4480 if (errno == ELOOP || errno == ENXIO)
4481 return fid_from_lma(path, -1, fid);
4485 rc = llapi_fd2fid(fd, fid);
4486 if (rc == -EINVAL || rc == -ENOTTY)
4487 rc = fid_from_lma(path, -1, fid);
4493 int llapi_fd2parent(int fd, unsigned int linkno, lustre_fid *parent_fid,
4494 char *name, size_t name_size)
4496 struct getparent *gp;
4499 gp = malloc(sizeof(*gp) + name_size);
4503 gp->gp_linkno = linkno;
4504 gp->gp_name_size = name_size;
4506 rc = ioctl(fd, LL_IOC_GETPARENT, gp);
4512 *parent_fid = gp->gp_fid;
4514 strncpy(name, gp->gp_name, name_size);
4515 name[name_size - 1] = '\0';
4522 int llapi_path2parent(const char *path, unsigned int linkno,
4523 lustre_fid *parent_fid, char *name, size_t name_size)
4528 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4532 rc = llapi_fd2parent(fd, linkno, parent_fid, name, name_size);
4537 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4542 root = opendir(mnt);
4545 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4549 rc = ioctl(dirfd(root), LL_IOC_GET_CONNECT_FLAGS, flags);
4552 llapi_error(LLAPI_MSG_ERROR, rc,
4553 "ioctl on %s for getting connect flags failed", mnt);
4559 int llapi_get_version(char *buffer, int buffer_size,
4564 struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
4566 fd = open(OBD_DEV_PATH, O_RDONLY);
4570 memset(buffer, 0, buffer_size);
4571 data->ioc_version = OBD_IOCTL_VERSION;
4572 data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
4573 data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
4574 data->ioc_len = obd_ioctl_packlen(data);
4576 rc = ioctl(fd, OBD_GET_VERSION, buffer);
4583 *version = data->ioc_bulk;
4588 * Get a 64-bit value representing the version of file data pointed by fd.
4590 * Each write or truncate, flushed on OST, will change this value. You can use
4591 * this value to verify if file data was modified. This only checks the file
4592 * data, not metadata.
4594 * \param flags 0: no flush pages, usually used it the process has already
4596 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4598 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4599 * pages from clients.
4601 * \retval 0 on success.
4602 * \retval -errno on error.
4604 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4607 struct ioc_data_version idv;
4609 idv.idv_flags = flags;
4611 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4615 *data_version = idv.idv_version;
4621 * Create a file without any name open it for read/write
4623 * - file is created as if it were a standard file in the given \a directory
4624 * - file does not appear in \a directory and mtime does not change because
4625 * the filename is handled specially by the Lustre MDS.
4626 * - file is removed at final close
4627 * - file modes are rw------- since it doesn't make sense to have a read-only
4628 * or write-only file that cannot be opened again.
4629 * - if user wants another mode it must use fchmod() on the open file, no
4630 * security problems arise because it cannot be opened by another process.
4632 * \param[in] directory directory from which to inherit layout/MDT idx
4633 * \param[in] idx MDT index on which the file is created,
4634 * \a idx == -1 means no specific MDT is requested
4635 * \param[in] open_flags standard open(2) flags
4637 * \retval 0 on success.
4638 * \retval -errno on error.
4640 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
4642 char file_path[PATH_MAX];
4643 char filename[PATH_MAX];
4644 int saved_errno = errno;
4652 snprintf(filename, sizeof(filename),
4653 LUSTRE_VOLATILE_HDR"::%.4X", rnumber);
4655 snprintf(filename, sizeof(filename),
4656 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, rnumber);
4658 rc = snprintf(file_path, sizeof(file_path),
4659 "%s/%s", directory, filename);
4660 if (rc >= sizeof(file_path))
4663 fd = open(file_path,
4664 O_RDWR | O_CREAT | O_EXCL | O_NOFOLLOW | open_flags,
4666 } while (fd < 0 && errno == EEXIST);
4669 llapi_error(LLAPI_MSG_ERROR, errno,
4670 "Cannot create volatile file '%s' in '%s'",
4671 filename + LUSTRE_VOLATILE_HDR_LEN,
4676 /* Unlink file in case this wasn't a Lustre filesystem and the
4677 * magic volatile filename wasn't handled as intended. The
4678 * effect is the same. If volatile open was supported then we
4679 * expect unlink() to return -ENOENT. */
4680 (void)unlink(file_path);
4682 /* Since we are returning successfully we restore errno (and
4683 * mask out possible EEXIST from open() and ENOENT from
4685 errno = saved_errno;
4691 * Swap the layouts between 2 file descriptors
4692 * the 2 files must be open for writing
4693 * first fd received the ioctl, second fd is passed as arg
4694 * this is assymetric but avoid use of root path for ioctl
4696 int llapi_fswap_layouts_grouplock(int fd1, int fd2, __u64 dv1, __u64 dv2,
4697 int gid, __u64 flags)
4699 struct lustre_swap_layouts lsl;
4704 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4705 rc = fstat(fd1, &st1);
4709 rc = fstat(fd2, &st2);
4714 lsl.sl_flags = flags;
4718 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4722 if (flags & (SWAP_LAYOUTS_KEEP_ATIME | SWAP_LAYOUTS_KEEP_MTIME)) {
4723 struct timeval tv1[2];
4724 struct timeval tv2[2];
4726 memset(tv1, 0, sizeof(tv1));
4727 memset(tv2, 0, sizeof(tv2));
4729 if (flags & SWAP_LAYOUTS_KEEP_ATIME) {
4730 tv1[0].tv_sec = st1.st_atime;
4731 tv2[0].tv_sec = st2.st_atime;
4733 tv1[0].tv_sec = st2.st_atime;
4734 tv2[0].tv_sec = st1.st_atime;
4737 if (flags & SWAP_LAYOUTS_KEEP_MTIME) {
4738 tv1[1].tv_sec = st1.st_mtime;
4739 tv2[1].tv_sec = st2.st_mtime;
4741 tv1[1].tv_sec = st2.st_mtime;
4742 tv2[1].tv_sec = st1.st_mtime;
4745 rc = futimes(fd1, tv1);
4749 rc = futimes(fd2, tv2);
4757 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4764 while (grp_id == 0);
4766 rc = llapi_fswap_layouts_grouplock(fd1, fd2, dv1, dv2, grp_id, flags);
4774 * Swap the layouts between 2 files
4775 * the 2 files are open in write
4777 int llapi_swap_layouts(const char *path1, const char *path2,
4778 __u64 dv1, __u64 dv2, __u64 flags)
4782 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4785 llapi_error(LLAPI_MSG_ERROR, rc,
4786 "error: cannot open '%s' for write", path1);
4790 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4793 llapi_error(LLAPI_MSG_ERROR, rc,
4794 "error: cannot open '%s' for write", path2);
4798 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4800 llapi_error(LLAPI_MSG_ERROR, rc,
4801 "error: cannot swap layout between '%s' and '%s'",
4812 * Attempt to open a file with Lustre file identifier \a fid
4813 * and return an open file descriptor.
4815 * \param[in] lustre_dir path within Lustre filesystem containing \a fid
4816 * \param[in] fid Lustre file identifier of file to open
4817 * \param[in] flags open() flags
4819 * \retval non-negative file descriptor on successful open
4820 * \retval -1 if an error occurred
4822 int llapi_open_by_fid(const char *lustre_dir, const lustre_fid *fid, int flags)
4824 char mntdir[PATH_MAX];
4825 char path[PATH_MAX];
4828 rc = llapi_search_mounts(lustre_dir, 0, mntdir, NULL);
4832 snprintf(path, sizeof(path), "%s/.lustre/fid/"DFID, mntdir, PFID(fid));
4833 return open(path, flags);
4839 * \param fd File to lock.
4840 * \param gid Group Identifier.
4842 * \retval 0 on success.
4843 * \retval -errno on failure.
4845 int llapi_group_lock(int fd, int gid)
4849 rc = ioctl(fd, LL_IOC_GROUP_LOCK, gid);
4852 llapi_error(LLAPI_MSG_ERROR, rc, "cannot get group lock");
4860 * \param fd File to unlock.
4861 * \param gid Group Identifier.
4863 * \retval 0 on success.
4864 * \retval -errno on failure.
4866 int llapi_group_unlock(int fd, int gid)
4870 rc = ioctl(fd, LL_IOC_GROUP_UNLOCK, gid);
4873 llapi_error(LLAPI_MSG_ERROR, rc, "cannot put group lock");