4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/utils/liblustreapi.c
38 * Author: Peter J. Braam <braam@clusterfs.com>
39 * Author: Phil Schwan <phil@clusterfs.com>
40 * Author: Robert Read <rread@clusterfs.com>
52 #include <sys/ioctl.h>
59 #include <sys/types.h>
60 #include <sys/syscall.h>
61 #include <sys/xattr.h>
64 #include <libgen.h> /* for dirname() */
65 #ifdef HAVE_LINUX_UNISTD_H
66 #include <linux/unistd.h>
72 #include <libcfs/libcfs.h>
73 #include <lnet/lnetctl.h>
74 #include <lustre/lustreapi.h>
75 #include <lustre_ioctl.h>
76 #include "lustreapi_internal.h"
78 static int llapi_msg_level = LLAPI_MSG_MAX;
80 void llapi_msg_set_level(int level)
82 /* ensure level is in the good range */
83 if (level < LLAPI_MSG_OFF)
84 llapi_msg_level = LLAPI_MSG_OFF;
85 else if (level > LLAPI_MSG_MAX)
86 llapi_msg_level = LLAPI_MSG_MAX;
88 llapi_msg_level = level;
91 static void error_callback_default(enum llapi_message_level level, int err,
92 const char *fmt, va_list ap)
94 vfprintf(stderr, fmt, ap);
95 if (level & LLAPI_MSG_NO_ERRNO)
96 fprintf(stderr, "\n");
98 fprintf(stderr, ": %s (%d)\n", strerror(err), err);
101 static void info_callback_default(enum llapi_message_level level, int err,
102 const char *fmt, va_list ap)
104 vfprintf(stdout, fmt, ap);
107 static llapi_log_callback_t llapi_error_callback = error_callback_default;
108 static llapi_log_callback_t llapi_info_callback = info_callback_default;
111 /* llapi_error will preserve errno */
112 void llapi_error(enum llapi_message_level level, int err, const char *fmt, ...)
115 int tmp_errno = errno;
117 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
121 llapi_error_callback(level, abs(err), fmt, args);
126 /* llapi_printf will preserve errno */
127 void llapi_printf(enum llapi_message_level level, const char *fmt, ...)
130 int tmp_errno = errno;
132 if ((level & LLAPI_MSG_MASK) > llapi_msg_level)
136 llapi_info_callback(level, 0, fmt, args);
142 * Set a custom error logging function. Passing in NULL will reset the logging
143 * callback to its default value.
145 * This function returns the value of the old callback.
147 llapi_log_callback_t llapi_error_callback_set(llapi_log_callback_t cb)
149 llapi_log_callback_t old = llapi_error_callback;
152 llapi_error_callback = cb;
154 llapi_error_callback = error_callback_default;
160 * Set a custom info logging function. Passing in NULL will reset the logging
161 * callback to its default value.
163 * This function returns the value of the old callback.
165 llapi_log_callback_t llapi_info_callback_set(llapi_log_callback_t cb)
167 llapi_log_callback_t old = llapi_info_callback;
170 llapi_info_callback = cb;
172 llapi_info_callback = info_callback_default;
178 * size_units is to be initialized (or zeroed) by caller.
180 int llapi_parse_size(const char *optarg, unsigned long long *size,
181 unsigned long long *size_units, int bytes_spec)
185 if (strncmp(optarg, "-", 1) == 0)
188 if (*size_units == 0)
191 *size = strtoull(optarg, &end, 0);
194 if ((*end == 'b') && *(end + 1) == '\0' &&
195 (*size & (~0ULL << (64 - 9))) == 0 &&
197 *size_units = 1 << 9;
198 } else if ((*end == 'b') &&
199 *(end + 1) == '\0' &&
202 } else if ((*end == 'k' || *end == 'K') &&
203 *(end + 1) == '\0' &&
204 (*size & (~0ULL << (64 - 10))) == 0) {
205 *size_units = 1 << 10;
206 } else if ((*end == 'm' || *end == 'M') &&
207 *(end + 1) == '\0' &&
208 (*size & (~0ULL << (64 - 20))) == 0) {
209 *size_units = 1 << 20;
210 } else if ((*end == 'g' || *end == 'G') &&
211 *(end + 1) == '\0' &&
212 (*size & (~0ULL << (64 - 30))) == 0) {
213 *size_units = 1 << 30;
214 } else if ((*end == 't' || *end == 'T') &&
215 *(end + 1) == '\0' &&
216 (*size & (~0ULL << (64 - 40))) == 0) {
217 *size_units = 1ULL << 40;
218 } else if ((*end == 'p' || *end == 'P') &&
219 *(end + 1) == '\0' &&
220 (*size & (~0ULL << (64 - 50))) == 0) {
221 *size_units = 1ULL << 50;
222 } else if ((*end == 'e' || *end == 'E') &&
223 *(end + 1) == '\0' &&
224 (*size & (~0ULL << (64 - 60))) == 0) {
225 *size_units = 1ULL << 60;
230 *size *= *size_units;
234 /* XXX: llapi_xxx() functions return negative values upon failure */
236 int llapi_stripe_limit_check(unsigned long long stripe_size, int stripe_offset,
237 int stripe_count, int stripe_pattern)
241 /* 64 KB is the largest common page size I'm aware of (on ia64), but
242 * check the local page size just in case. */
243 page_size = LOV_MIN_STRIPE_SIZE;
244 if (getpagesize() > page_size) {
245 page_size = getpagesize();
246 llapi_err_noerrno(LLAPI_MSG_WARN,
247 "warning: your page size (%u) is "
248 "larger than expected (%u)", page_size,
249 LOV_MIN_STRIPE_SIZE);
251 if ((stripe_size & (LOV_MIN_STRIPE_SIZE - 1))) {
253 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe_size %llu, "
254 "must be an even multiple of %d bytes",
255 stripe_size, page_size);
258 if (stripe_offset < -1) {
260 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe offset %d",
264 if (stripe_count < -1 || stripe_count > LOV_MAX_STRIPE_COUNT) {
266 llapi_error(LLAPI_MSG_ERROR, rc, "error: bad stripe count %d",
270 if (stripe_size >= (1ULL << 32)) {
272 llapi_error(LLAPI_MSG_ERROR, rc,
273 "warning: stripe size 4G or larger "
274 "is not currently supported and would wrap");
280 /* return the first file matching this pattern */
281 static int first_match(char *pattern, char *buffer)
285 if (glob(pattern, GLOB_BRACE, NULL, &glob_info))
288 if (glob_info.gl_pathc < 1) {
289 globfree(&glob_info);
293 strcpy(buffer, glob_info.gl_pathv[0]);
295 globfree(&glob_info);
299 static int find_target_obdpath(char *fsname, char *path)
302 char pattern[PATH_MAX + 1];
305 snprintf(pattern, PATH_MAX,
306 "/proc/fs/lustre/lov/%s-*/target_obd",
308 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
309 if (rc == GLOB_NOMATCH)
314 strcpy(path, glob_info.gl_pathv[0]);
315 globfree(&glob_info);
319 static int find_poolpath(char *fsname, char *poolname, char *poolpath)
322 char pattern[PATH_MAX + 1];
325 snprintf(pattern, PATH_MAX,
326 "/proc/fs/lustre/lov/%s-*/pools/%s",
328 rc = glob(pattern, GLOB_BRACE, NULL, &glob_info);
329 /* If no pools, make sure the lov is available */
330 if ((rc == GLOB_NOMATCH) &&
331 (find_target_obdpath(fsname, poolpath) == -ENODEV))
336 strcpy(poolpath, glob_info.gl_pathv[0]);
337 globfree(&glob_info);
342 * Trim a trailing newline from a string, if it exists.
344 int llapi_chomp_string(char *buf)
360 * return a parameter string for a specific device type or mountpoint
362 * \param param_path the path to the file containing parameter data
363 * \param result buffer for parameter value string
364 * \param result_size size of buffer for return value
366 * The \param param_path is appended to /proc/{fs,sys}/{lnet,lustre} to
367 * complete the absolute path to the file containing the parameter data
368 * the user is requesting. If that file exist then the data is read from
369 * the file and placed into the \param result buffer that is passed by
370 * the user. Data is only copied up to the \param result_size to prevent
371 * overflow of the array.
373 * Return 0 for success, with a NUL-terminated string in \param result.
374 * Return -ve value for error.
376 int get_param(const char *param_path, char *result,
377 unsigned int result_size)
379 char file[PATH_MAX + 1], pattern[PATH_MAX + 1], buf[result_size];
383 snprintf(pattern, PATH_MAX, "/proc/{fs,sys}/{lnet,lustre}/%s",
385 rc = first_match(pattern, file);
386 if (rc != 0 || result == NULL)
389 fp = fopen(file, "r");
391 while (fgets(buf, result_size, fp) != NULL)
400 #define DEVICES_LIST "/proc/fs/lustre/devices"
403 * return a parameter string for a specific device type or mountpoint
405 * \param fsname Lustre filesystem name (optional)
406 * \param file_path path to file in filesystem (optional, if fsname unset)
407 * \param obd_type Lustre OBD device type
408 * \param param_name parameter name to fetch
409 * \param value return buffer for parameter value string
410 * \param val_len size of buffer for return value
412 * If fsname is specified then the parameter will be from that filesystem
413 * (if it exists). If file_path is given and it is in a mounted Lustre
414 * filesystem, then the parameter will be otherwise the value may be
415 * from any mounted filesystem (if there is more than one).
417 * If "obd_type" matches a Lustre device then the first matching device
418 * (as with "lctl dl", constrained by \param fsname or \param mount_path)
419 * will be used to provide the return value, otherwise the first such
420 * device found will be used.
422 * Return 0 for success, with a NUL-terminated string in \param buffer.
423 * Return -ve value for error.
425 static int get_param_obdvar(const char *fsname, const char *file_path,
426 const char *obd_type, const char *param_name,
427 char *value, unsigned int val_len)
429 char devices[PATH_MAX];
430 char dev[PATH_MAX] = "*";
435 fp = fopen(DEVICES_LIST, "r");
438 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
442 if (fsname == NULL && file_path != NULL) {
443 rc = llapi_search_fsname(file_path, fs);
445 llapi_error(LLAPI_MSG_ERROR, rc,
446 "'%s' is not on a Lustre filesystem",
450 } else if (fsname != NULL) {
451 rc = strlcpy(fs, fsname, sizeof(fs));
452 if (rc >= sizeof(fs)) {
458 while (fgets(devices, sizeof(devices) - 1, fp) != NULL) {
459 char *bufp = devices, *tmp;
461 devices[sizeof(devices) - 1] = '\0';
462 while (bufp[0] == ' ')
465 tmp = strstr(bufp, obd_type);
467 tmp += strlen(obd_type) + 1;
470 rc = strlcpy(dev, tmp, sizeof(dev));
471 if (rc >= sizeof(dev)) {
476 tmp = strchr(dev, ' ');
483 if (dev[0] == '*' && strlen(fs)) {
484 rc = snprintf(dev, sizeof(dev), "%s-*", fs);
485 if (rc >= sizeof(dev)) {
490 rc = snprintf(devices, sizeof(devices), "%s/%s/%s", obd_type, dev,
492 if (rc >= sizeof(devices)) {
498 return get_param(devices, value, val_len);
506 * TYPE one of llite, lmv, lov.
507 * /proc/fs/lustre/TYPE/INST the directory of interest.
509 static int get_param_cli(const char *type, const char *inst,
510 const char *param, char *buf, size_t buf_size)
512 char param_path[PATH_MAX + 1];
513 FILE *param_file = NULL;
516 snprintf(param_path, sizeof(param_path),
517 "/proc/fs/lustre/%s/%s/%s", type, inst, param);
519 param_file = fopen(param_path, "r");
520 if (param_file == NULL) {
525 if (fgets(buf, buf_size, param_file) == NULL) {
532 if (param_file != NULL)
538 static int get_param_llite(const char *path,
539 const char *param, char *buf, size_t buf_size)
544 rc = llapi_getname(path, inst, sizeof(inst));
548 return get_param_cli("llite", inst, param, buf, buf_size);
551 static int get_param_lov(const char *path,
552 const char *param, char *buf, size_t buf_size)
554 struct obd_uuid uuid;
557 rc = llapi_file_get_lov_uuid(path, &uuid);
561 return get_param_cli("lov", uuid.uuid, param, buf, buf_size);
564 static int get_param_lmv(const char *path,
565 const char *param, char *buf, size_t buf_size)
567 struct obd_uuid uuid;
570 rc = llapi_file_get_lmv_uuid(path, &uuid);
574 return get_param_cli("lmv", uuid.uuid, param, buf, buf_size);
577 static int get_mds_md_size(const char *path)
579 int md_size = lov_user_md_size(LOV_MAX_STRIPE_COUNT, LOV_USER_MAGIC_V3);
583 /* Get the max ea size from llite proc. */
584 rc = get_param_llite(path, "max_easize", buf, sizeof(buf));
596 int llapi_get_agent_uuid(char *path, char *buf, size_t bufsize)
598 return get_param_lmv(path, "uuid", buf, bufsize);
602 * if pool is NULL, search ostname in target_obd
603 * if pool is not NULL:
604 * if pool not found returns errno < 0
605 * if ostname is NULL, returns 1 if pool is not empty and 0 if pool empty
606 * if ostname is not NULL, returns 1 if OST is in pool and 0 if not
608 int llapi_search_ost(char *fsname, char *poolname, char *ostname)
611 char buffer[PATH_MAX + 1];
615 len = strlen(ostname);
617 if (poolname == NULL) {
621 rc = find_target_obdpath(fsname, buffer);
623 rc = find_poolpath(fsname, poolname, buffer);
628 fd = fopen(buffer, "r");
632 while (fgets(buffer, sizeof(buffer), fd) != NULL) {
633 if (poolname == NULL) {
635 /* Search for an ostname in the list of OSTs
636 Line format is IDX: fsname-OSTxxxx_UUID STATUS */
637 ptr = strchr(buffer, ' ');
639 (strncmp(ptr + 1, ostname, len) == 0)) {
644 /* Search for an ostname in a pool,
645 (or an existing non-empty pool if no ostname) */
646 if ((ostname == NULL) ||
647 (strncmp(buffer, ostname, len) == 0)) {
657 int llapi_file_open_pool(const char *name, int flags, int mode,
658 unsigned long long stripe_size, int stripe_offset,
659 int stripe_count, int stripe_pattern, char *pool_name)
661 struct lov_user_md_v3 lum = { 0 };
664 /* Make sure we have a good pool */
665 if (pool_name != NULL) {
666 char fsname[MAX_OBD_NAME + 1], *ptr;
668 rc = llapi_search_fsname(name, fsname);
670 llapi_error(LLAPI_MSG_ERROR, rc,
671 "'%s' is not on a Lustre filesystem",
676 /* in case user gives the full pool name <fsname>.<poolname>,
677 * strip the fsname */
678 ptr = strchr(pool_name, '.');
681 if (strcmp(pool_name, fsname) != 0) {
683 llapi_err_noerrno(LLAPI_MSG_ERROR,
684 "Pool '%s' is not on filesystem '%s'",
691 /* Make sure the pool exists and is non-empty */
692 rc = llapi_search_ost(fsname, pool_name, NULL);
694 llapi_err_noerrno(LLAPI_MSG_ERROR,
695 "pool '%s.%s' %s", fsname, pool_name,
696 rc == 0 ? "has no OSTs" : "does not exist");
702 fd = open(name, flags | O_LOV_DELAY_CREATE, mode);
704 if (errno == EISDIR && !(flags & O_DIRECTORY)) {
705 flags = O_DIRECTORY | O_RDONLY;
712 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
716 rc = llapi_stripe_limit_check(stripe_size, stripe_offset, stripe_count,
721 /* Initialize IOCTL striping pattern structure */
722 lum.lmm_magic = LOV_USER_MAGIC_V3;
723 lum.lmm_pattern = stripe_pattern;
724 lum.lmm_stripe_size = stripe_size;
725 lum.lmm_stripe_count = stripe_count;
726 lum.lmm_stripe_offset = stripe_offset;
727 if (pool_name != NULL) {
728 strlcpy(lum.lmm_pool_name, pool_name,
729 sizeof(lum.lmm_pool_name));
731 /* If no pool is specified at all, use V1 request */
732 lum.lmm_magic = LOV_USER_MAGIC_V1;
735 if (ioctl(fd, LL_IOC_LOV_SETSTRIPE, &lum)) {
736 char *errmsg = "stripe already set";
738 if (errno != EEXIST && errno != EALREADY)
739 errmsg = strerror(errno);
741 llapi_err_noerrno(LLAPI_MSG_ERROR,
742 "error on ioctl "LPX64" for '%s' (%d): %s",
743 (__u64)LL_IOC_LOV_SETSTRIPE, name, fd,errmsg);
754 int llapi_file_open(const char *name, int flags, int mode,
755 unsigned long long stripe_size, int stripe_offset,
756 int stripe_count, int stripe_pattern)
758 return llapi_file_open_pool(name, flags, mode, stripe_size,
759 stripe_offset, stripe_count,
760 stripe_pattern, NULL);
763 int llapi_file_create(const char *name, unsigned long long stripe_size,
764 int stripe_offset, int stripe_count, int stripe_pattern)
768 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
769 stripe_offset, stripe_count, stripe_pattern,
778 int llapi_file_create_pool(const char *name, unsigned long long stripe_size,
779 int stripe_offset, int stripe_count,
780 int stripe_pattern, char *pool_name)
784 fd = llapi_file_open_pool(name, O_CREAT | O_WRONLY, 0644, stripe_size,
785 stripe_offset, stripe_count, stripe_pattern,
794 int llapi_dir_set_default_lmv_stripe(const char *name, int stripe_offset,
795 int stripe_count, int stripe_pattern,
796 const char *pool_name)
798 struct lmv_user_md lum = { 0 };
802 lum.lum_magic = LMV_USER_MAGIC;
803 lum.lum_stripe_offset = stripe_offset;
804 lum.lum_stripe_count = stripe_count;
805 lum.lum_hash_type = stripe_pattern;
806 if (pool_name != NULL) {
807 if (strlen(pool_name) >= sizeof(lum.lum_pool_name)) {
808 llapi_err_noerrno(LLAPI_MSG_ERROR,
809 "error LL_IOC_LMV_SET_DEFAULT_STRIPE '%s'"
810 ": too large pool name: %s", name, pool_name);
813 strncpy(lum.lum_pool_name, pool_name,
814 sizeof(lum.lum_pool_name));
817 fd = open(name, O_DIRECTORY | O_RDONLY);
820 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
824 rc = ioctl(fd, LL_IOC_LMV_SET_DEFAULT_STRIPE, &lum);
826 char *errmsg = "stripe already set";
828 if (errno != EEXIST && errno != EALREADY)
829 errmsg = strerror(errno);
831 llapi_err_noerrno(LLAPI_MSG_ERROR,
832 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
839 int llapi_dir_create_pool(const char *name, int mode, int stripe_offset,
840 int stripe_count, int stripe_pattern,
841 const char *pool_name)
843 struct lmv_user_md lmu = { 0 };
844 struct obd_ioctl_data data = { 0 };
847 char *dirpath = NULL;
848 char *namepath = NULL;
854 dirpath = strdup(name);
855 namepath = strdup(name);
856 if (!dirpath || !namepath)
859 lmu.lum_magic = LMV_USER_MAGIC;
860 lmu.lum_stripe_offset = stripe_offset;
861 lmu.lum_stripe_count = stripe_count;
862 lmu.lum_hash_type = stripe_pattern;
863 if (pool_name != NULL) {
864 if (strlen(pool_name) >= LOV_MAXPOOLNAME) {
865 llapi_err_noerrno(LLAPI_MSG_ERROR,
866 "error LL_IOC_LMV_SETSTRIPE '%s' : too large"
867 "pool name: %s", name, pool_name);
871 memcpy(lmu.lum_pool_name, pool_name, strlen(pool_name));
874 filename = basename(namepath);
875 dir = dirname(dirpath);
877 data.ioc_inlbuf1 = (char *)filename;
878 data.ioc_inllen1 = strlen(filename) + 1;
879 data.ioc_inlbuf2 = (char *)&lmu;
880 data.ioc_inllen2 = sizeof(struct lmv_user_md);
881 data.ioc_type = mode;
882 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
884 llapi_error(LLAPI_MSG_ERROR, rc,
885 "error: LL_IOC_LMV_SETSTRIPE pack failed '%s'.",
890 fd = open(dir, O_DIRECTORY | O_RDONLY);
893 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'", name);
897 if (ioctl(fd, LL_IOC_LMV_SETSTRIPE, buf)) {
898 char *errmsg = "stripe already set";
900 if (errno != EEXIST && errno != EALREADY)
901 errmsg = strerror(errno);
903 llapi_err_noerrno(LLAPI_MSG_ERROR,
904 "error on LL_IOC_LMV_SETSTRIPE '%s' (%d): %s",
914 int llapi_direntry_remove(char *dname)
916 char *dirpath = NULL;
917 char *namepath = NULL;
923 dirpath = strdup(dname);
924 namepath = strdup(dname);
925 if (!dirpath || !namepath)
928 filename = basename(namepath);
930 dir = dirname(dirpath);
932 fd = open(dir, O_DIRECTORY | O_RDONLY);
935 llapi_error(LLAPI_MSG_ERROR, rc, "unable to open '%s'",
940 if (ioctl(fd, LL_IOC_REMOVE_ENTRY, filename)) {
941 char *errmsg = strerror(errno);
942 llapi_err_noerrno(LLAPI_MSG_ERROR,
943 "error on ioctl "LPX64" for '%s' (%d): %s",
944 (__u64)LL_IOC_LMV_SETSTRIPE, filename,
956 * Find the fsname, the full path, and/or an open fd.
957 * Either the fsname or path must not be NULL
959 int get_root_path(int want, char *fsname, int *outfd, char *path, int index)
962 char buf[PATH_MAX], mntdir[PATH_MAX];
965 int idx = 0, len = 0, mntlen, fd;
968 /* get the mount point */
969 fp = setmntent(MOUNTED, "r");
972 llapi_error(LLAPI_MSG_ERROR, rc,
973 "setmntent(%s) failed", MOUNTED);
977 if (getmntent_r(fp, &mnt, buf, sizeof(buf)) == NULL)
980 if (!llapi_is_lustre_mnt(&mnt))
983 if ((want & WANT_INDEX) && (idx++ != index))
986 mntlen = strlen(mnt.mnt_dir);
987 ptr = strrchr(mnt.mnt_fsname, '/');
988 /* thanks to the call to llapi_is_lustre_mnt() above,
989 * we are sure that mnt.mnt_fsname contains ":/",
990 * so ptr should never be NULL */
995 /* Check the fsname for a match, if given */
996 if (!(want & WANT_FSNAME) && fsname != NULL &&
997 (strlen(fsname) > 0) && (strcmp(ptr, fsname) != 0))
1000 /* If the path isn't set return the first one we find */
1001 if (path == NULL || strlen(path) == 0) {
1002 strcpy(mntdir, mnt.mnt_dir);
1003 if ((want & WANT_FSNAME) && fsname != NULL)
1004 strcpy(fsname, ptr);
1007 /* Otherwise find the longest matching path */
1008 } else if ((strlen(path) >= mntlen) && (mntlen >= len) &&
1009 (strncmp(mnt.mnt_dir, path, mntlen) == 0)) {
1010 strcpy(mntdir, mnt.mnt_dir);
1012 if ((want & WANT_FSNAME) && fsname != NULL)
1013 strcpy(fsname, ptr);
1021 if ((want & WANT_PATH) && path != NULL)
1022 strcpy(path, mntdir);
1023 if (want & WANT_FD) {
1024 fd = open(mntdir, O_RDONLY | O_DIRECTORY | O_NONBLOCK);
1027 llapi_error(LLAPI_MSG_ERROR, rc,
1028 "error opening '%s'", mntdir);
1034 } else if (want & WANT_ERROR)
1035 llapi_err_noerrno(LLAPI_MSG_ERROR,
1036 "can't find fs root for '%s': %d",
1037 (want & WANT_PATH) ? fsname : path, rc);
1042 * search lustre mounts
1044 * Calling this function will return to the user the mount point, mntdir, and
1045 * the file system name, fsname, if the user passed a buffer to this routine.
1047 * The user inputs are pathname and index. If the pathname is supplied then
1048 * the value of the index will be ignored. The pathname will return data if
1049 * the pathname is located on a lustre mount. Index is used to pick which
1050 * mount point you want in the case of multiple mounted lustre file systems.
1051 * See function lfs_osts in lfs.c for a example of the index use.
1053 int llapi_search_mounts(const char *pathname, int index, char *mntdir,
1056 int want = WANT_PATH, idx = -1;
1058 if (!pathname || pathname[0] == '\0') {
1062 strcpy(mntdir, pathname);
1065 want |= WANT_FSNAME;
1066 return get_root_path(want, fsname, NULL, mntdir, idx);
1069 /* Given a path, find the corresponding Lustre fsname */
1070 int llapi_search_fsname(const char *pathname, char *fsname)
1075 path = realpath(pathname, NULL);
1077 char buf[PATH_MAX], *ptr;
1080 if (pathname[0] != '/') {
1081 /* Need an absolute path, but realpath() only works for
1082 * pathnames that actually exist. We go through the
1083 * extra hurdle of dirname(getcwd() + pathname) in
1084 * case the relative pathname contains ".." in it. */
1085 if (getcwd(buf, sizeof(buf) - 2) == NULL)
1087 rc = strlcat(buf, "/", sizeof(buf));
1088 if (rc >= sizeof(buf))
1091 rc = strlcat(buf, pathname, sizeof(buf));
1092 if (rc >= sizeof(buf))
1094 path = realpath(buf, NULL);
1096 ptr = strrchr(buf, '/');
1100 path = realpath(buf, NULL);
1103 llapi_error(LLAPI_MSG_ERROR, rc,
1104 "pathname '%s' cannot expand",
1110 rc = get_root_path(WANT_FSNAME | WANT_ERROR, fsname, NULL, path, -1);
1115 int llapi_search_rootpath(char *pathname, const char *fsname)
1117 return get_root_path(WANT_PATH, (char *)fsname, NULL, pathname, -1);
1120 int llapi_getname(const char *path, char *buf, size_t size)
1122 struct obd_uuid uuid_buf;
1123 char *uuid = uuid_buf.uuid;
1126 memset(&uuid_buf, 0, sizeof(uuid_buf));
1127 rc = llapi_file_get_lov_uuid(path, &uuid_buf);
1131 /* We want to turn lustre-clilov-ffff88002738bc00 into
1132 * lustre-ffff88002738bc00. */
1134 nr = snprintf(buf, size, "%.*s-%s",
1135 (int) (strlen(uuid) - 24), uuid,
1136 uuid + strlen(uuid) - 16);
1146 * find the pool directory path under /proc
1147 * (can be also used to test if a fsname is known)
1149 static int poolpath(char *fsname, char *pathname, char *pool_pathname)
1152 char pattern[PATH_MAX + 1];
1153 char buffer[PATH_MAX];
1155 if (fsname == NULL) {
1156 rc = llapi_search_fsname(pathname, buffer);
1160 strcpy(pathname, fsname);
1163 snprintf(pattern, PATH_MAX, "/proc/fs/lustre/lov/%s-*/pools", fsname);
1164 rc = first_match(pattern, buffer);
1168 /* in fsname test mode, pool_pathname is NULL */
1169 if (pool_pathname != NULL)
1170 strcpy(pool_pathname, buffer);
1176 * Get the list of pool members.
1177 * \param poolname string of format \<fsname\>.\<poolname\>
1178 * \param members caller-allocated array of char*
1179 * \param list_size size of the members array
1180 * \param buffer caller-allocated buffer for storing OST names
1181 * \param buffer_size size of the buffer
1183 * \return number of members retrieved for this pool
1184 * \retval -error failure
1186 int llapi_get_poolmembers(const char *poolname, char **members,
1187 int list_size, char *buffer, int buffer_size)
1189 char fsname[PATH_MAX];
1191 char pathname[PATH_MAX];
1192 char path[PATH_MAX];
1199 /* name is FSNAME.POOLNAME */
1200 if (strlen(poolname) >= sizeof(fsname))
1202 strlcpy(fsname, poolname, sizeof(fsname));
1203 pool = strchr(fsname, '.');
1210 rc = poolpath(fsname, NULL, pathname);
1212 llapi_error(LLAPI_MSG_ERROR, rc,
1213 "Lustre filesystem '%s' not found",
1218 llapi_printf(LLAPI_MSG_NORMAL, "Pool: %s.%s\n", fsname, pool);
1219 rc = snprintf(path, sizeof(path), "%s/%s", pathname, pool);
1220 if (rc >= sizeof(path))
1222 fd = fopen(path, "r");
1225 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open %s", path);
1230 while (fgets(buf, sizeof(buf), fd) != NULL) {
1231 if (nb_entries >= list_size) {
1235 buf[sizeof(buf) - 1] = '\0';
1237 tmp = strchr(buf, '\n');
1240 if (used + strlen(buf) + 1 > buffer_size) {
1245 strcpy(buffer + used, buf);
1246 members[nb_entries] = buffer + used;
1247 used += strlen(buf) + 1;
1257 * Get the list of pools in a filesystem.
1258 * \param name filesystem name or path
1259 * \param poollist caller-allocated array of char*
1260 * \param list_size size of the poollist array
1261 * \param buffer caller-allocated buffer for storing pool names
1262 * \param buffer_size size of the buffer
1264 * \return number of pools retrieved for this filesystem
1265 * \retval -error failure
1267 int llapi_get_poollist(const char *name, char **poollist, int list_size,
1268 char *buffer, int buffer_size)
1270 char fsname[PATH_MAX + 1], rname[PATH_MAX + 1], pathname[PATH_MAX + 1];
1274 struct dirent *cookie = NULL;
1276 unsigned int nb_entries = 0;
1277 unsigned int used = 0;
1280 /* initilize output array */
1281 for (i = 0; i < list_size; i++)
1284 /* is name a pathname ? */
1285 ptr = strchr(name, '/');
1287 /* only absolute pathname is supported */
1291 if (!realpath(name, rname)) {
1293 llapi_error(LLAPI_MSG_ERROR, rc, "invalid path '%s'",
1298 rc = poolpath(NULL, rname, pathname);
1300 llapi_error(LLAPI_MSG_ERROR, rc, "'%s' is not"
1301 " a Lustre filesystem", name);
1304 if (strlen(rname) > sizeof(fsname)-1)
1306 strncpy(fsname, rname, sizeof(fsname));
1308 /* name is FSNAME */
1309 if (strlen(name) > sizeof(fsname)-1)
1311 strncpy(fsname, name, sizeof(fsname));
1312 rc = poolpath(fsname, NULL, pathname);
1315 llapi_error(LLAPI_MSG_ERROR, rc,
1316 "Lustre filesystem '%s' not found", name);
1320 llapi_printf(LLAPI_MSG_NORMAL, "Pools from %s:\n", fsname);
1321 dir = opendir(pathname);
1324 llapi_error(LLAPI_MSG_ERROR, rc,
1325 "Could not open pool list for '%s'",
1331 rc = readdir_r(dir, &pool, &cookie);
1335 llapi_error(LLAPI_MSG_ERROR, rc,
1336 "Error reading pool list for '%s'", name);
1338 } else if ((rc == 0) && (cookie == NULL)) {
1339 /* end of directory */
1343 /* ignore . and .. */
1344 if (!strcmp(pool.d_name, ".") || !strcmp(pool.d_name, ".."))
1347 /* check output bounds */
1348 if (nb_entries >= list_size) {
1353 /* +2 for '.' and final '\0' */
1354 if (used + strlen(pool.d_name) + strlen(fsname) + 2
1360 sprintf(buffer + used, "%s.%s", fsname, pool.d_name);
1361 poollist[nb_entries] = buffer + used;
1362 used += strlen(pool.d_name) + strlen(fsname) + 2;
1368 return ((rc != 0) ? rc : nb_entries);
1371 /* wrapper for lfs.c and obd.c */
1372 int llapi_poollist(const char *name)
1374 /* list of pool names (assume that pool count is smaller
1376 char **list, *buffer = NULL, *path = NULL, *fsname = NULL;
1377 int obdcount, bufsize, rc, nb, i;
1378 char *poolname = NULL, *tmp = NULL, data[16];
1383 if (name[0] != '/') {
1384 fsname = strdup(name);
1388 poolname = strchr(fsname, '.');
1392 path = (char *) name;
1395 rc = get_param_obdvar(fsname, path, "lov", "numobd",
1396 data, sizeof(data));
1399 obdcount = atoi(data);
1401 /* Allocate space for each fsname-OST0000_UUID, 1 per OST,
1402 * and also an array to store the pointers for all that
1403 * allocated space. */
1405 bufsize = sizeof(struct obd_uuid) * obdcount;
1406 buffer = realloc(tmp, bufsize + sizeof(*list) * obdcount);
1407 if (buffer == NULL) {
1411 list = (char **) (buffer + bufsize);
1414 /* name is a path or fsname */
1415 nb = llapi_get_poollist(name, list, obdcount,
1418 /* name is a pool name (<fsname>.<poolname>) */
1419 nb = llapi_get_poolmembers(name, list, obdcount,
1423 if (nb == -EOVERFLOW) {
1426 goto retry_get_pools;
1429 for (i = 0; i < nb; i++)
1430 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", list[i]);
1431 rc = (nb < 0 ? nb : 0);
1440 typedef int (semantic_func_t)(char *path, DIR *parent, DIR **d,
1441 void *data, struct dirent64 *de);
1443 #define OBD_NOT_FOUND (-1)
1445 static int common_param_init(struct find_param *param, char *path)
1447 int lumlen = get_mds_md_size(path);
1449 if (lumlen < PATH_MAX + 1)
1450 lumlen = PATH_MAX + 1;
1452 param->lumlen = lumlen;
1453 param->lmd = malloc(sizeof(lstat_t) + param->lumlen);
1454 if (param->lmd == NULL) {
1455 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1456 "error: allocation of %zu bytes for ioctl",
1457 sizeof(lstat_t) + param->lumlen);
1461 param->fp_lmv_count = 256;
1462 param->fp_lmv_md = malloc(lmv_user_md_size(256, LMV_MAGIC_V1));
1463 if (param->fp_lmv_md == NULL) {
1464 llapi_error(LLAPI_MSG_ERROR, -ENOMEM,
1465 "error: allocation of %d bytes for ioctl",
1466 lmv_user_md_size(256, LMV_MAGIC_V1));
1470 param->got_uuids = 0;
1471 param->obdindexes = NULL;
1472 param->obdindex = OBD_NOT_FOUND;
1473 if (!param->migrate)
1474 param->mdtindex = OBD_NOT_FOUND;
1478 static void find_param_fini(struct find_param *param)
1480 if (param->obdindexes)
1481 free(param->obdindexes);
1486 if (param->fp_lmv_md)
1487 free(param->fp_lmv_md);
1490 static int cb_common_fini(char *path, DIR *parent, DIR **dirp, void *data,
1491 struct dirent64 *de)
1493 struct find_param *param = data;
1499 /* set errno upon failure */
1500 static DIR *opendir_parent(char *path)
1506 fname = strrchr(path, '/');
1508 return opendir(".");
1512 parent = opendir(path);
1517 static int cb_get_dirstripe(char *path, DIR *d, struct find_param *param)
1519 struct lmv_user_md *lmv = (struct lmv_user_md *)param->fp_lmv_md;
1522 lmv->lum_stripe_count = param->fp_lmv_count;
1523 if (param->get_default_lmv)
1524 lmv->lum_magic = LMV_USER_MAGIC;
1526 lmv->lum_magic = LMV_MAGIC_V1;
1527 ret = ioctl(dirfd(d), LL_IOC_LMV_GETSTRIPE, lmv);
1532 static int get_lmd_info(char *path, DIR *parent, DIR *dir,
1533 struct lov_user_mds_data *lmd, int lumlen)
1535 lstat_t *st = &lmd->lmd_st;
1538 if (parent == NULL && dir == NULL)
1542 ret = ioctl(dirfd(dir), LL_IOC_MDC_GETINFO, (void *)lmd);
1543 } else if (parent) {
1544 char *fname = strrchr(path, '/');
1546 fname = (fname == NULL ? path : fname + 1);
1547 /* retrieve needed file info */
1548 strlcpy((char *)lmd, fname, lumlen);
1549 ret = ioctl(dirfd(parent), IOC_MDC_GETFILEINFO, (void *)lmd);
1553 if (errno == ENOTTY) {
1554 /* ioctl is not supported, it is not a lustre fs.
1555 * Do the regular lstat(2) instead. */
1556 ret = lstat_f(path, st);
1559 llapi_error(LLAPI_MSG_ERROR, ret,
1560 "error: %s: lstat failed for %s",
1563 } else if (errno == ENOENT) {
1565 llapi_error(LLAPI_MSG_WARN, ret,
1566 "warning: %s: %s does not exist",
1568 } else if (errno != EISDIR) {
1570 llapi_error(LLAPI_MSG_ERROR, ret,
1571 "%s ioctl failed for %s.",
1572 dir ? "LL_IOC_MDC_GETINFO" :
1573 "IOC_MDC_GETFILEINFO", path);
1576 llapi_error(LLAPI_MSG_ERROR, ret,
1577 "error: %s: IOC_MDC_GETFILEINFO failed for %s",
1584 static int llapi_semantic_traverse(char *path, int size, DIR *parent,
1585 semantic_func_t sem_init,
1586 semantic_func_t sem_fini, void *data,
1587 struct dirent64 *de)
1589 struct find_param *param = (struct find_param *)data;
1590 struct dirent64 *dent;
1598 if (!d && errno != ENOTDIR) {
1600 llapi_error(LLAPI_MSG_ERROR, ret, "%s: Failed to open '%s'",
1603 } else if (!d && !parent) {
1604 /* ENOTDIR. Open the parent dir. */
1605 p = opendir_parent(path);
1612 if (sem_init && (ret = sem_init(path, parent ?: p, &d, data, de)))
1618 while ((dent = readdir64(d)) != NULL) {
1621 param->have_fileinfo = 0;
1623 if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, ".."))
1626 /* Don't traverse .lustre directory */
1627 if (!(strcmp(dent->d_name, dot_lustre_name)))
1631 if ((len + dent->d_reclen + 2) > size) {
1632 llapi_err_noerrno(LLAPI_MSG_ERROR,
1633 "error: %s: string buffer is too small",
1638 strcat(path, dent->d_name);
1640 if (dent->d_type == DT_UNKNOWN) {
1641 lstat_t *st = ¶m->lmd->lmd_st;
1643 rc = get_lmd_info(path, d, NULL, param->lmd,
1646 dent->d_type = IFTODT(st->st_mode);
1653 switch (dent->d_type) {
1655 llapi_err_noerrno(LLAPI_MSG_ERROR,
1656 "error: %s: '%s' is UNKNOWN type %d",
1657 __func__, dent->d_name, dent->d_type);
1660 rc = llapi_semantic_traverse(path, size, d, sem_init,
1661 sem_fini, data, dent);
1662 if (rc != 0 && ret == 0)
1668 rc = sem_init(path, d, NULL, data, dent);
1669 if (rc < 0 && ret == 0)
1672 if (sem_fini && rc == 0)
1673 sem_fini(path, d, NULL, data, dent);
1681 sem_fini(path, parent, &d, data, de);
1690 static int param_callback(char *path, semantic_func_t sem_init,
1691 semantic_func_t sem_fini, struct find_param *param)
1693 int ret, len = strlen(path);
1696 if (len > PATH_MAX) {
1698 llapi_error(LLAPI_MSG_ERROR, ret,
1699 "Path name '%s' is too long", path);
1703 buf = (char *)malloc(PATH_MAX + 1);
1707 strlcpy(buf, path, PATH_MAX + 1);
1708 ret = common_param_init(param, buf);
1712 param->fp_depth = 0;
1714 ret = llapi_semantic_traverse(buf, PATH_MAX + 1, NULL, sem_init,
1715 sem_fini, param, NULL);
1717 find_param_fini(param);
1719 return ret < 0 ? ret : 0;
1722 int llapi_file_fget_lov_uuid(int fd, struct obd_uuid *lov_name)
1724 int rc = ioctl(fd, OBD_IOC_GETNAME, lov_name);
1727 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lov name.");
1732 int llapi_file_fget_lmv_uuid(int fd, struct obd_uuid *lov_name)
1734 int rc = ioctl(fd, OBD_IOC_GETMDNAME, lov_name);
1737 llapi_error(LLAPI_MSG_ERROR, rc, "error: can't get lmv name.");
1742 int llapi_file_get_lov_uuid(const char *path, struct obd_uuid *lov_uuid)
1746 fd = open(path, O_RDONLY);
1749 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1753 rc = llapi_file_fget_lov_uuid(fd, lov_uuid);
1759 int llapi_file_get_lmv_uuid(const char *path, struct obd_uuid *lov_uuid)
1763 fd = open(path, O_RDONLY);
1766 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
1770 rc = llapi_file_fget_lmv_uuid(fd, lov_uuid);
1781 * If uuidp is NULL, return the number of available obd uuids.
1782 * If uuidp is non-NULL, then it will return the uuids of the obds. If
1783 * there are more OSTs then allocated to uuidp, then an error is returned with
1784 * the ost_count set to number of available obd uuids.
1786 static int llapi_get_target_uuids(int fd, struct obd_uuid *uuidp,
1787 int *ost_count, enum tgt_type type)
1789 struct obd_uuid name;
1793 int rc = 0, index = 0;
1795 /* Get the lov name */
1796 if (type == LOV_TYPE) {
1797 rc = llapi_file_fget_lov_uuid(fd, &name);
1801 rc = llapi_file_fget_lmv_uuid(fd, &name);
1806 /* Now get the ost uuids from /proc */
1807 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1808 type == LOV_TYPE ? "lov" : "lmv", name.uuid);
1809 fp = fopen(buf, "r");
1812 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1816 snprintf(format, sizeof(format),
1817 "%%d: %%%zus", sizeof(uuidp[0].uuid) - 1);
1818 while (fgets(buf, sizeof(buf), fp) != NULL) {
1819 if (uuidp && (index < *ost_count)) {
1820 if (sscanf(buf, format, &index, uuidp[index].uuid) < 2)
1828 if (uuidp && (index > *ost_count))
1835 int llapi_lov_get_uuids(int fd, struct obd_uuid *uuidp, int *ost_count)
1837 return llapi_get_target_uuids(fd, uuidp, ost_count, LOV_TYPE);
1840 int llapi_get_obd_count(char *mnt, int *count, int is_mdt)
1845 root = opendir(mnt);
1848 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
1853 rc = ioctl(dirfd(root), LL_IOC_GETOBDCOUNT, count);
1861 /* Check if user specified value matches a real uuid. Ignore _UUID,
1862 * -osc-4ba41334, other trailing gunk in comparison.
1863 * @param real_uuid ends in "_UUID"
1864 * @param search_uuid may or may not end in "_UUID"
1866 int llapi_uuid_match(char *real_uuid, char *search_uuid)
1868 int cmplen = strlen(real_uuid);
1869 int searchlen = strlen(search_uuid);
1871 if (cmplen > 5 && strcmp(real_uuid + cmplen - 5, "_UUID") == 0)
1873 if (searchlen > 5 && strcmp(search_uuid + searchlen - 5, "_UUID") == 0)
1876 /* The UUIDs may legitimately be different lengths, if
1877 * the system was upgraded from an older version. */
1878 if (cmplen != searchlen)
1881 return (strncmp(search_uuid, real_uuid, cmplen) == 0);
1884 /* Here, param->obduuid points to a single obduuid, the index of which is
1885 * returned in param->obdindex */
1886 static int setup_obd_uuid(DIR *dir, char *dname, struct find_param *param)
1888 struct obd_uuid obd_uuid;
1894 if (param->got_uuids)
1897 /* Get the lov/lmv name */
1899 rc = llapi_file_fget_lmv_uuid(dirfd(dir), &obd_uuid);
1901 rc = llapi_file_fget_lov_uuid(dirfd(dir), &obd_uuid);
1903 if (rc != -ENOTTY) {
1904 llapi_error(LLAPI_MSG_ERROR, rc,
1905 "error: can't get lov name: %s", dname);
1912 param->got_uuids = 1;
1914 /* Now get the ost uuids from /proc */
1915 snprintf(buf, sizeof(buf), "/proc/fs/lustre/%s/%s/target_obd",
1916 param->get_lmv ? "lmv" : "lov", obd_uuid.uuid);
1917 fp = fopen(buf, "r");
1920 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening '%s'", buf);
1924 if (!param->obduuid && !param->quiet && !param->obds_printed)
1925 llapi_printf(LLAPI_MSG_NORMAL, "%s:\n",
1926 param->get_lmv ? "MDTS" : "OBDS:");
1928 snprintf(format, sizeof(format),
1929 "%%d: %%%zus", sizeof(obd_uuid.uuid) - 1);
1930 while (fgets(buf, sizeof(buf), fp) != NULL) {
1933 if (sscanf(buf, format, &index, obd_uuid.uuid) < 2)
1936 if (param->obduuid) {
1937 if (llapi_uuid_match(obd_uuid.uuid,
1938 param->obduuid->uuid)) {
1939 param->obdindex = index;
1942 } else if (!param->quiet && !param->obds_printed) {
1943 /* Print everything */
1944 llapi_printf(LLAPI_MSG_NORMAL, "%s", buf);
1947 param->obds_printed = 1;
1951 if (param->obduuid && (param->obdindex == OBD_NOT_FOUND)) {
1952 llapi_err_noerrno(LLAPI_MSG_ERROR,
1953 "error: %s: unknown obduuid: %s",
1954 __func__, param->obduuid->uuid);
1961 /* In this case, param->obduuid will be an array of obduuids and
1962 * obd index for all these obduuids will be returned in
1963 * param->obdindexes */
1964 static int setup_indexes(DIR *dir, char *path, struct obd_uuid *obduuids,
1965 int num_obds, int **obdindexes, int *obdindex,
1968 int ret, obdcount, obd_valid = 0, obdnum;
1970 struct obd_uuid *uuids = NULL;
1974 if (type == LOV_TYPE)
1975 ret = get_param_lov(path, "numobd", buf, sizeof(buf));
1977 ret = get_param_lmv(path, "numobd", buf, sizeof(buf));
1981 obdcount = atoi(buf);
1982 uuids = (struct obd_uuid *)malloc(obdcount *
1983 sizeof(struct obd_uuid));
1988 ret = llapi_get_target_uuids(dirfd(dir), uuids, &obdcount, type);
1990 struct obd_uuid *uuids_temp;
1992 if (ret == -EOVERFLOW) {
1993 uuids_temp = realloc(uuids, obdcount *
1994 sizeof(struct obd_uuid));
1995 if (uuids_temp != NULL) {
1997 goto retry_get_uuids;
2003 llapi_error(LLAPI_MSG_ERROR, ret, "get ost uuid failed");
2007 indexes = malloc(num_obds * sizeof(*obdindex));
2008 if (indexes == NULL) {
2013 for (obdnum = 0; obdnum < num_obds; obdnum++) {
2016 /* The user may have specified a simple index */
2017 i = strtol(obduuids[obdnum].uuid, &end, 0);
2018 if (end && *end == '\0' && i < obdcount) {
2019 indexes[obdnum] = i;
2022 for (i = 0; i < obdcount; i++) {
2023 if (llapi_uuid_match(uuids[i].uuid,
2024 obduuids[obdnum].uuid)) {
2025 indexes[obdnum] = i;
2031 if (i >= obdcount) {
2032 indexes[obdnum] = OBD_NOT_FOUND;
2033 llapi_err_noerrno(LLAPI_MSG_ERROR,
2034 "error: %s: unknown obduuid: %s",
2035 __func__, obduuids[obdnum].uuid);
2041 *obdindex = OBD_NOT_FOUND;
2043 *obdindex = obd_valid;
2045 *obdindexes = indexes;
2053 static int setup_target_indexes(DIR *dir, char *path, struct find_param *param)
2057 if (param->mdtuuid) {
2058 ret = setup_indexes(dir, path, param->mdtuuid, param->num_mdts,
2059 ¶m->mdtindexes, ¶m->mdtindex, LMV_TYPE);
2063 if (param->obduuid) {
2064 ret = setup_indexes(dir, path, param->obduuid, param->num_obds,
2065 ¶m->obdindexes, ¶m->obdindex, LOV_TYPE);
2069 param->got_uuids = 1;
2073 int llapi_ostlist(char *path, struct find_param *param)
2078 dir = opendir(path);
2082 ret = setup_obd_uuid(dir, path, param);
2089 * Given a filesystem name, or a pathname of a file on a lustre filesystem,
2090 * tries to determine the path to the filesystem's clilov directory under /proc
2092 * fsname is limited to MTI_NAME_MAXLEN in lustre_idl.h
2093 * The NUL terminator is compensated by the additional "%s" bytes. */
2094 #define LOV_LEN (sizeof("/proc/fs/lustre/lov/%s-clilov-*") + MTI_NAME_MAXLEN)
2095 static int clilovpath(const char *fsname, const char *const pathname,
2099 char pattern[LOV_LEN];
2100 char buffer[PATH_MAX + 1];
2102 if (fsname == NULL) {
2103 rc = llapi_search_fsname(pathname, buffer);
2109 snprintf(pattern, sizeof(pattern), "/proc/fs/lustre/lov/%s-clilov-*",
2112 rc = first_match(pattern, buffer);
2116 strlcpy(clilovpath, buffer, sizeof(buffer));
2122 * Given the path to a stripe attribute proc file, tries to open and
2123 * read the attribute and return the value using the attr parameter
2125 static int sattr_read_attr(const char *const fpath,
2130 char line[PATH_MAX + 1];
2133 f = fopen(fpath, "r");
2136 llapi_error(LLAPI_MSG_ERROR, rc, "Cannot open '%s'", fpath);
2140 if (fgets(line, sizeof(line), f) != NULL) {
2143 llapi_error(LLAPI_MSG_ERROR, errno, "Cannot read from '%s'", fpath);
2152 * Tries to determine the default stripe attributes for a given filesystem. The
2153 * filesystem to check should be specified by fsname, or will be determined
2156 static int sattr_get_defaults(const char *const fsname,
2157 const char *const pathname,
2158 unsigned int *scount,
2159 unsigned int *ssize,
2160 unsigned int *soffset)
2163 char dpath[PATH_MAX + 1];
2164 char fpath[PATH_MAX + 1];
2166 rc = clilovpath(fsname, pathname, dpath);
2171 snprintf(fpath, PATH_MAX, "%s/stripecount", dpath);
2172 rc = sattr_read_attr(fpath, scount);
2178 snprintf(fpath, PATH_MAX, "%s/stripesize", dpath);
2179 rc = sattr_read_attr(fpath, ssize);
2185 snprintf(fpath, PATH_MAX, "%s/stripeoffset", dpath);
2186 rc = sattr_read_attr(fpath, soffset);
2195 * Tries to gather the default stripe attributes for a given filesystem. If
2196 * the attributes can be determined, they are cached for easy retreival the
2197 * next time they are needed. Only a single filesystem's attributes are
2200 static int sattr_cache_get_defaults(const char *const fsname,
2201 const char *const pathname,
2202 unsigned int *scount,
2203 unsigned int *ssize,
2204 unsigned int *soffset)
2207 char fsname[PATH_MAX + 1];
2208 unsigned int stripecount;
2209 unsigned int stripesize;
2210 unsigned int stripeoffset;
2216 char fsname_buf[PATH_MAX + 1];
2217 unsigned int tmp[3];
2219 if (fsname == NULL) {
2220 rc = llapi_search_fsname(pathname, fsname_buf);
2224 strlcpy(fsname_buf, fsname, sizeof(fsname_buf));
2227 if (strncmp(fsname_buf, cache.fsname, sizeof(fsname_buf) - 1) != 0) {
2229 * Ensure all 3 sattrs (count, size, and offset) are
2230 * successfully retrieved and stored in tmp before writing to
2233 rc = sattr_get_defaults(fsname_buf, NULL, &tmp[0], &tmp[1],
2238 cache.stripecount = tmp[0];
2239 cache.stripesize = tmp[1];
2240 cache.stripeoffset = tmp[2];
2241 strlcpy(cache.fsname, fsname_buf, sizeof(cache.fsname));
2245 *scount = cache.stripecount;
2247 *ssize = cache.stripesize;
2249 *soffset = cache.stripeoffset;
2254 static void lov_dump_user_lmm_header(struct lov_user_md *lum, char *path,
2255 struct lov_user_ost_data_v1 *objects,
2256 int is_dir, int verbose, int depth,
2257 int raw, char *pool_name)
2259 char *prefix = is_dir ? "" : "lmm_";
2260 char *seperator = "";
2263 if (is_dir && lmm_oi_seq(&lum->lmm_oi) == FID_SEQ_LOV_DEFAULT) {
2264 lmm_oi_set_seq(&lum->lmm_oi, 0);
2265 if (verbose & VERBOSE_DETAIL)
2266 llapi_printf(LLAPI_MSG_NORMAL, "(Default) ");
2269 if (depth && path && ((verbose != VERBOSE_OBJID) || !is_dir))
2270 llapi_printf(LLAPI_MSG_NORMAL, "%s\n", path);
2272 if ((verbose & VERBOSE_DETAIL) && !is_dir) {
2273 llapi_printf(LLAPI_MSG_NORMAL, "lmm_magic: 0x%08X\n",
2275 llapi_printf(LLAPI_MSG_NORMAL, "lmm_seq: "LPX64"\n",
2276 lmm_oi_seq(&lum->lmm_oi));
2277 llapi_printf(LLAPI_MSG_NORMAL, "lmm_object_id: "LPX64"\n",
2278 lmm_oi_id(&lum->lmm_oi));
2281 if (verbose & VERBOSE_COUNT) {
2282 if (verbose & ~VERBOSE_COUNT)
2283 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_count: ",
2286 if (!raw && lum->lmm_stripe_count == 0) {
2287 unsigned int scount;
2288 rc = sattr_cache_get_defaults(NULL, path,
2292 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2295 llapi_error(LLAPI_MSG_ERROR, rc,
2296 "Cannot determine default"
2299 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2300 lum->lmm_stripe_count ==
2301 (typeof(lum->lmm_stripe_count))(-1)
2302 ? -1 : lum->lmm_stripe_count);
2305 llapi_printf(LLAPI_MSG_NORMAL, "%hd",
2306 (__s16)lum->lmm_stripe_count);
2308 seperator = is_dir ? " " : "\n";
2311 if (verbose & VERBOSE_SIZE) {
2312 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2313 if (verbose & ~VERBOSE_SIZE)
2314 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_size: ",
2316 if (is_dir && !raw && lum->lmm_stripe_size == 0) {
2318 rc = sattr_cache_get_defaults(NULL, path, NULL, &ssize,
2321 llapi_printf(LLAPI_MSG_NORMAL, "%u", ssize);
2323 llapi_error(LLAPI_MSG_ERROR, rc,
2324 "Cannot determine default"
2327 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2328 lum->lmm_stripe_size);
2330 seperator = is_dir ? " " : "\n";
2333 if ((verbose & VERBOSE_LAYOUT) && !is_dir) {
2334 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2335 if (verbose & ~VERBOSE_LAYOUT)
2336 llapi_printf(LLAPI_MSG_NORMAL, "%spattern: ",
2338 llapi_printf(LLAPI_MSG_NORMAL, "%.x", lum->lmm_pattern);
2342 if ((verbose & VERBOSE_GENERATION) && !is_dir) {
2343 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2344 if (verbose & ~VERBOSE_GENERATION)
2345 llapi_printf(LLAPI_MSG_NORMAL, "%slayout_gen: ",
2347 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2348 (int)lum->lmm_layout_gen);
2352 if (verbose & VERBOSE_OFFSET) {
2353 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2354 if (verbose & ~VERBOSE_OFFSET)
2355 llapi_printf(LLAPI_MSG_NORMAL, "%sstripe_offset: ",
2358 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2359 lum->lmm_stripe_offset ==
2360 (typeof(lum->lmm_stripe_offset))(-1) ? -1 :
2361 lum->lmm_stripe_offset);
2363 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2364 objects[0].l_ost_idx);
2365 seperator = is_dir ? " " : "\n";
2368 if ((verbose & VERBOSE_POOL) && (pool_name != NULL)) {
2369 llapi_printf(LLAPI_MSG_NORMAL, "%s", seperator);
2370 if (verbose & ~VERBOSE_POOL)
2371 llapi_printf(LLAPI_MSG_NORMAL, "%spool: ",
2373 llapi_printf(LLAPI_MSG_NORMAL, "%s", pool_name);
2376 if (!is_dir || (is_dir && (verbose != VERBOSE_OBJID)))
2377 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2380 void lov_dump_user_lmm_v1v3(struct lov_user_md *lum, char *pool_name,
2381 struct lov_user_ost_data_v1 *objects,
2382 char *path, int is_dir, int obdindex,
2383 int depth, int header, int raw)
2385 int i, obdstripe = (obdindex != OBD_NOT_FOUND) ? 0 : 1;
2388 for (i = 0; !is_dir && i < lum->lmm_stripe_count; i++) {
2389 if (obdindex == objects[i].l_ost_idx) {
2397 lov_dump_user_lmm_header(lum, path, objects, is_dir, header,
2398 depth, raw, pool_name);
2400 if (!is_dir && (header & VERBOSE_OBJID) &&
2401 !(lum->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
2403 llapi_printf(LLAPI_MSG_NORMAL,
2404 "\tobdidx\t\t objid\t\t objid\t\t group\n");
2406 for (i = 0; i < lum->lmm_stripe_count; i++) {
2407 int idx = objects[i].l_ost_idx;
2408 long long oid = ostid_id(&objects[i].l_ost_oi);
2409 long long gr = ostid_seq(&objects[i].l_ost_oi);
2410 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx)) {
2412 sprintf(fmt, "%s%s%s\n",
2413 "\t%6u\t%14llu\t%#13llx\t",
2414 (fid_seq_is_rsvd(gr) ||
2415 fid_seq_is_mdt0(gr)) ?
2416 "%14llu" : "%#14llx", "%s");
2417 llapi_printf(LLAPI_MSG_NORMAL, fmt, idx, oid,
2419 obdindex == idx ? " *" : "");
2423 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2427 void lmv_dump_user_lmm(struct lmv_user_md *lum, char *pool_name,
2428 char *path, int obdindex, int depth, int verbose)
2430 struct lmv_user_mds_data *objects = lum->lum_objects;
2431 char *prefix = lum->lum_magic == LMV_USER_MAGIC ? "(Default)" : "";
2432 int i, obdstripe = 0;
2433 char *separator = "";
2435 if (obdindex != OBD_NOT_FOUND) {
2436 if (lum->lum_stripe_count == 0) {
2437 if (obdindex == lum->lum_stripe_offset)
2440 for (i = 0; i < lum->lum_stripe_count; i++) {
2441 if (obdindex == objects[i].lum_mds) {
2442 llapi_printf(LLAPI_MSG_NORMAL,
2457 /* show all information default */
2459 if (lum->lum_magic == LMV_USER_MAGIC)
2460 verbose = VERBOSE_POOL | VERBOSE_COUNT | VERBOSE_OFFSET;
2462 verbose = VERBOSE_OBJID;
2465 if (depth && path && ((verbose != VERBOSE_OBJID)))
2466 llapi_printf(LLAPI_MSG_NORMAL, "%s%s\n", prefix, path);
2468 if (verbose & VERBOSE_COUNT) {
2469 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2470 if (verbose & ~VERBOSE_COUNT)
2471 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_count: ");
2472 llapi_printf(LLAPI_MSG_NORMAL, "%u",
2473 (int)lum->lum_stripe_count);
2474 if (verbose & VERBOSE_OFFSET)
2480 if (verbose & VERBOSE_OFFSET) {
2481 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2482 if (verbose & ~VERBOSE_OFFSET)
2483 llapi_printf(LLAPI_MSG_NORMAL, "lmv_stripe_offset: ");
2484 llapi_printf(LLAPI_MSG_NORMAL, "%d",
2485 (int)lum->lum_stripe_offset);
2489 if (verbose & VERBOSE_OBJID && lum->lum_magic != LMV_USER_MAGIC) {
2490 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2491 if (obdstripe == 1 && lum->lum_stripe_count > 0)
2492 llapi_printf(LLAPI_MSG_NORMAL,
2493 "mdtidx\t\t FID[seq:oid:ver]\n");
2494 for (i = 0; i < lum->lum_stripe_count; i++) {
2495 int idx = objects[i].lum_mds;
2496 struct lu_fid *fid = &objects[i].lum_fid;
2497 if ((obdindex == OBD_NOT_FOUND) || (obdindex == idx))
2498 llapi_printf(LLAPI_MSG_NORMAL,
2499 "%6u\t\t "DFID"\t\t%s\n",
2501 obdindex == idx ? " *" : "");
2506 if ((verbose & VERBOSE_POOL) && (pool_name[0] != '\0')) {
2507 llapi_printf(LLAPI_MSG_NORMAL, "%s", separator);
2508 if (verbose & ~VERBOSE_POOL)
2509 llapi_printf(LLAPI_MSG_NORMAL, "%slmv_pool: ",
2511 llapi_printf(LLAPI_MSG_NORMAL, "%s%c ", pool_name, ' ');
2515 if (!(verbose & VERBOSE_OBJID) || lum->lum_magic == LMV_USER_MAGIC)
2516 llapi_printf(LLAPI_MSG_NORMAL, "\n");
2519 void llapi_lov_dump_user_lmm(struct find_param *param, char *path, int is_dir)
2523 if (param->get_lmv || param->get_default_lmv)
2524 magic = (__u32)param->fp_lmv_md->lum_magic;
2526 magic = *(__u32 *)¶m->lmd->lmd_lmm; /* lum->lmm_magic */
2529 case LOV_USER_MAGIC_V1:
2530 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, NULL,
2531 param->lmd->lmd_lmm.lmm_objects,
2533 param->obdindex, param->fp_max_depth,
2534 param->verbose, param->raw);
2536 case LOV_USER_MAGIC_V3: {
2537 char pool_name[LOV_MAXPOOLNAME + 1];
2538 struct lov_user_ost_data_v1 *objects;
2539 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2541 strlcpy(pool_name, lmmv3->lmm_pool_name, sizeof(pool_name));
2542 objects = lmmv3->lmm_objects;
2543 lov_dump_user_lmm_v1v3(¶m->lmd->lmd_lmm, pool_name,
2544 objects, path, is_dir,
2545 param->obdindex, param->fp_max_depth,
2546 param->verbose, param->raw);
2550 case LMV_USER_MAGIC: {
2551 char pool_name[LOV_MAXPOOLNAME + 1];
2552 struct lmv_user_md *lum;
2554 lum = (struct lmv_user_md *)param->fp_lmv_md;
2555 strlcpy(pool_name, lum->lum_pool_name, sizeof(pool_name));
2556 lmv_dump_user_lmm(lum, pool_name, path,
2557 param->obdindex, param->fp_max_depth,
2562 llapi_printf(LLAPI_MSG_NORMAL, "unknown lmm_magic: %#x "
2563 "(expecting one of %#x %#x %#x %#x)\n",
2564 *(__u32 *)¶m->lmd->lmd_lmm,
2565 LOV_USER_MAGIC_V1, LOV_USER_MAGIC_V3,
2566 LMV_USER_MAGIC, LMV_MAGIC_V1);
2571 int llapi_file_get_stripe(const char *path, struct lov_user_md *lum)
2577 fname = strrchr(path, '/');
2579 /* It should be a file (or other non-directory) */
2580 if (fname == NULL) {
2581 dname = (char *)malloc(2);
2585 fname = (char *)path;
2587 dname = (char *)malloc(fname - path + 1);
2590 strncpy(dname, path, fname - path);
2591 dname[fname - path] = '\0';
2595 fd = open(dname, O_RDONLY);
2602 strcpy((char *)lum, fname);
2603 if (ioctl(fd, IOC_MDC_GETFILESTRIPE, (void *)lum) == -1)
2606 if (close(fd) == -1 && rc == 0)
2613 int llapi_file_lookup(int dirfd, const char *name)
2615 struct obd_ioctl_data data = { 0 };
2620 if (dirfd < 0 || name == NULL)
2623 data.ioc_version = OBD_IOCTL_VERSION;
2624 data.ioc_len = sizeof(data);
2625 data.ioc_inlbuf1 = (char *)name;
2626 data.ioc_inllen1 = strlen(name) + 1;
2628 rc = obd_ioctl_pack(&data, &buf, sizeof(rawbuf));
2630 llapi_error(LLAPI_MSG_ERROR, rc,
2631 "error: IOC_MDC_LOOKUP pack failed for '%s': rc %d",
2636 rc = ioctl(dirfd, IOC_MDC_LOOKUP, buf);
2642 /* Check if the value matches 1 of the given criteria (e.g. --atime +/-N).
2643 * @mds indicates if this is MDS timestamps and there are attributes on OSTs.
2645 * The result is -1 if it does not match, 0 if not yet clear, 1 if matches.
2646 * The table below gives the answers for the specified parameters (value and
2647 * sign), 1st column is the answer for the MDS value, the 2nd is for the OST:
2648 * --------------------------------------
2649 * 1 | file > limit; sign > 0 | -1 / -1 |
2650 * 2 | file = limit; sign > 0 | -1 / -1 |
2651 * 3 | file < limit; sign > 0 | ? / 1 |
2652 * 4 | file > limit; sign = 0 | -1 / -1 |
2653 * 5 | file = limit; sign = 0 | ? / 1 | <- (see the Note below)
2654 * 6 | file < limit; sign = 0 | ? / -1 |
2655 * 7 | file > limit; sign < 0 | 1 / 1 |
2656 * 8 | file = limit; sign < 0 | ? / -1 |
2657 * 9 | file < limit; sign < 0 | ? / -1 |
2658 * --------------------------------------
2659 * Note: 5th actually means that the value is within the interval
2660 * (limit - margin, limit]. */
2661 static int find_value_cmp(unsigned long long file, unsigned long long limit,
2662 int sign, int negopt, unsigned long long margin,
2668 /* Drop the fraction of margin (of days). */
2669 if (file + margin <= limit)
2671 } else if (sign == 0) {
2672 if (file <= limit && file + margin > limit)
2674 else if (file + margin <= limit)
2676 } else if (sign < 0) {
2683 return negopt ? ~ret + 1 : ret;
2686 /* Check if the file time matches all the given criteria (e.g. --atime +/-N).
2687 * Return -1 or 1 if file timestamp does not or does match the given criteria
2688 * correspondingly. Return 0 if the MDS time is being checked and there are
2689 * attributes on OSTs and it is not yet clear if the timespamp matches.
2691 * If 0 is returned, we need to do another RPC to the OSTs to obtain the
2692 * updated timestamps. */
2693 static int find_time_check(lstat_t *st, struct find_param *param, int mds)
2698 /* Check if file is accepted. */
2699 if (param->fp_atime) {
2700 rc2 = find_value_cmp(st->st_atime, param->fp_atime,
2701 param->fp_asign, param->fp_exclude_atime,
2708 if (param->fp_mtime) {
2709 rc2 = find_value_cmp(st->st_mtime, param->fp_mtime,
2710 param->fp_msign, param->fp_exclude_mtime,
2715 /* If the previous check matches, but this one is not yet clear,
2716 * we should return 0 to do an RPC on OSTs. */
2721 if (param->fp_ctime) {
2722 rc2 = find_value_cmp(st->st_ctime, param->fp_ctime,
2723 param->fp_csign, param->fp_exclude_ctime,
2728 /* If the previous check matches, but this one is not yet clear,
2729 * we should return 0 to do an RPC on OSTs. */
2738 * Check whether the stripes matches the indexes user provided
2742 static int check_obd_match(struct find_param *param)
2744 lstat_t *st = ¶m->lmd->lmd_st;
2745 struct lov_user_ost_data_v1 *lmm_objects;
2748 if (param->obduuid && param->obdindex == OBD_NOT_FOUND)
2751 if (!S_ISREG(st->st_mode))
2754 /* Only those files should be accepted, which have a
2755 * stripe on the specified OST. */
2756 if (!param->lmd->lmd_lmm.lmm_stripe_count)
2759 if (param->lmd->lmd_lmm.lmm_magic ==
2760 LOV_USER_MAGIC_V3) {
2761 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
2763 lmm_objects = lmmv3->lmm_objects;
2764 } else if (param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) {
2765 lmm_objects = param->lmd->lmd_lmm.lmm_objects;
2767 llapi_err_noerrno(LLAPI_MSG_ERROR, "%s:Unknown magic: 0x%08X\n",
2768 __func__, param->lmd->lmd_lmm.lmm_magic);
2772 for (i = 0; i < param->lmd->lmd_lmm.lmm_stripe_count; i++) {
2773 for (j = 0; j < param->num_obds; j++) {
2774 if (param->obdindexes[j] ==
2775 lmm_objects[i].l_ost_idx) {
2776 if (param->exclude_obd)
2783 if (param->exclude_obd)
2788 static int check_mdt_match(struct find_param *param)
2792 if (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND)
2795 /* FIXME: For striped dir, we should get stripe information and check */
2796 for (i = 0; i < param->num_mdts; i++) {
2797 if (param->mdtindexes[i] == param->file_mdtindex)
2798 return !param->exclude_mdt;
2801 if (param->exclude_mdt)
2807 * Check whether the obd is active or not, if it is
2808 * not active, just print the object affected by this
2811 static int print_failed_tgt(struct find_param *param, char *path, int type)
2813 struct obd_statfs stat_buf;
2814 struct obd_uuid uuid_buf;
2817 LASSERT(type == LL_STATFS_LOV || type == LL_STATFS_LMV);
2819 memset(&stat_buf, 0, sizeof(struct obd_statfs));
2820 memset(&uuid_buf, 0, sizeof(struct obd_uuid));
2821 ret = llapi_obd_statfs(path, type,
2822 param->obdindex, &stat_buf,
2825 llapi_printf(LLAPI_MSG_NORMAL,
2826 "obd_uuid: %s failed %s ",
2827 param->obduuid->uuid,
2833 static int cb_find_init(char *path, DIR *parent, DIR **dirp,
2834 void *data, struct dirent64 *de)
2836 struct find_param *param = (struct find_param *)data;
2837 DIR *dir = dirp == NULL ? NULL : *dirp;
2838 int decision = 1; /* 1 is accepted; -1 is rejected. */
2839 lstat_t *st = ¶m->lmd->lmd_st;
2841 int checked_type = 0;
2844 LASSERT(parent != NULL || dir != NULL);
2846 if (param->have_fileinfo == 0)
2847 param->lmd->lmd_lmm.lmm_stripe_count = 0;
2849 /* If a regular expression is presented, make the initial decision */
2850 if (param->pattern != NULL) {
2851 char *fname = strrchr(path, '/');
2852 fname = (fname == NULL ? path : fname + 1);
2853 ret = fnmatch(param->pattern, fname, 0);
2854 if ((ret == FNM_NOMATCH && !param->exclude_pattern) ||
2855 (ret == 0 && param->exclude_pattern))
2859 /* See if we can check the file type from the dirent. */
2860 if (param->fp_type != 0 && de != NULL && de->d_type != DT_UNKNOWN) {
2863 if (DTTOIF(de->d_type) == param->fp_type) {
2864 if (param->fp_exclude_type)
2867 if (!param->fp_exclude_type)
2874 /* Request MDS for the stat info if some of these parameters need
2875 * to be compared. */
2876 if (param->obduuid || param->mdtuuid ||
2877 param->fp_check_uid || param->fp_check_gid ||
2878 param->fp_atime || param->fp_mtime || param->fp_ctime ||
2879 param->check_pool || param->check_size ||
2880 param->check_stripecount || param->check_stripesize ||
2881 param->check_layout)
2884 if (param->fp_type != 0 && checked_type == 0)
2887 if (param->have_fileinfo == 0 && decision == 0) {
2888 ret = get_lmd_info(path, parent, dir, param->lmd,
2892 ret = llapi_file_fget_mdtidx(dirfd(dir),
2893 ¶m->file_mdtindex);
2898 ret = lstat_f(path, &tmp_st);
2901 llapi_error(LLAPI_MSG_ERROR, ret,
2902 "error: %s: lstat failed"
2903 "for %s", __func__, path);
2906 if (S_ISREG(tmp_st.st_mode)) {
2907 fd = open(path, O_RDONLY);
2909 ret = llapi_file_fget_mdtidx(fd,
2910 ¶m->file_mdtindex);
2916 /* For special inode, it assumes to
2917 * reside on the same MDT with the
2920 ret = llapi_file_fget_mdtidx(fd,
2921 ¶m->file_mdtindex);
2934 if (param->fp_type && !checked_type) {
2935 if ((st->st_mode & S_IFMT) == param->fp_type) {
2936 if (param->fp_exclude_type)
2939 if (!param->fp_exclude_type)
2945 if (param->obduuid || param->mdtuuid) {
2946 if (lustre_fs && param->got_uuids &&
2947 param->fp_dev != st->st_dev) {
2948 /* A lustre/lustre mount point is crossed. */
2949 param->got_uuids = 0;
2950 param->obds_printed = 0;
2951 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2954 if (lustre_fs && !param->got_uuids) {
2955 ret = setup_target_indexes(dir ? dir : parent, path,
2960 param->fp_dev = st->st_dev;
2961 } else if (!lustre_fs && param->got_uuids) {
2962 /* A lustre/non-lustre mount point is crossed. */
2963 param->got_uuids = 0;
2964 param->obdindex = param->mdtindex = OBD_NOT_FOUND;
2968 if (param->check_stripesize) {
2969 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_size,
2971 param->stripesize_sign,
2972 param->exclude_stripesize,
2973 param->stripesize_units, 0);
2978 if (param->check_stripecount) {
2979 decision = find_value_cmp(param->lmd->lmd_lmm.lmm_stripe_count,
2981 param->stripecount_sign,
2982 param->exclude_stripecount, 1, 0);
2987 if (param->check_layout) {
2990 found = (param->lmd->lmd_lmm.lmm_pattern & param->layout);
2991 if ((param->lmd->lmd_lmm.lmm_pattern == 0xFFFFFFFF) ||
2992 (found && param->exclude_layout) ||
2993 (!found && !param->exclude_layout)) {
2999 /* If an OBD UUID is specified but none matches, skip this file. */
3000 if ((param->obduuid && param->obdindex == OBD_NOT_FOUND) ||
3001 (param->mdtuuid && param->mdtindex == OBD_NOT_FOUND))
3004 /* If a OST or MDT UUID is given, and some OST matches,
3006 if (param->obdindex != OBD_NOT_FOUND ||
3007 param->mdtindex != OBD_NOT_FOUND) {
3008 if (param->obduuid) {
3009 if (check_obd_match(param)) {
3010 /* If no mdtuuid is given, we are done.
3011 * Otherwise, fall through to the mdtuuid
3013 if (!param->mdtuuid)
3019 if (param->mdtuuid) {
3020 if (check_mdt_match(param))
3026 if (param->fp_check_uid) {
3027 if (st->st_uid == param->fp_uid) {
3028 if (param->fp_exclude_uid)
3031 if (!param->fp_exclude_uid)
3036 if (param->fp_check_gid) {
3037 if (st->st_gid == param->fp_gid) {
3038 if (param->fp_exclude_gid)
3041 if (!param->fp_exclude_gid)
3046 if (param->check_pool) {
3047 struct lov_user_md_v3 *lmmv3 = (void *)¶m->lmd->lmd_lmm;
3049 /* empty requested pool is taken as no pool search => V1 */
3050 if (((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V1) &&
3051 (param->poolname[0] == '\0')) ||
3052 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3053 (strncmp(lmmv3->lmm_pool_name,
3054 param->poolname, LOV_MAXPOOLNAME) == 0)) ||
3055 ((param->lmd->lmd_lmm.lmm_magic == LOV_USER_MAGIC_V3) &&
3056 (strcmp(param->poolname, "*") == 0))) {
3057 if (param->exclude_pool)
3060 if (!param->exclude_pool)
3065 /* Check the time on mds. */
3067 if (param->fp_atime || param->fp_mtime || param->fp_ctime) {
3070 for_mds = lustre_fs ? (S_ISREG(st->st_mode) &&
3071 param->lmd->lmd_lmm.lmm_stripe_count)
3073 decision = find_time_check(st, param, for_mds);
3078 /* If file still fits the request, ask ost for updated info.
3079 The regular stat is almost of the same speed as some new
3080 'glimpse-size-ioctl'. */
3082 if (param->check_size && S_ISREG(st->st_mode) &&
3083 param->lmd->lmd_lmm.lmm_stripe_count)
3087 /* For regular files with the stripe the decision may have not
3088 * been taken yet if *time or size is to be checked. */
3089 LASSERT((S_ISREG(st->st_mode) &&
3090 param->lmd->lmd_lmm.lmm_stripe_count) ||
3091 param->mdtindex != OBD_NOT_FOUND);
3093 if (param->obdindex != OBD_NOT_FOUND)
3094 print_failed_tgt(param, path, LL_STATFS_LOV);
3096 if (param->mdtindex != OBD_NOT_FOUND)
3097 print_failed_tgt(param, path, LL_STATFS_LMV);
3100 ret = ioctl(dirfd(dir), IOC_LOV_GETINFO,
3101 (void *)param->lmd);
3102 } else if (parent) {
3103 ret = ioctl(dirfd(parent), IOC_LOV_GETINFO,
3104 (void *)param->lmd);
3108 if (errno == ENOENT) {
3109 llapi_error(LLAPI_MSG_ERROR, -ENOENT,
3110 "warning: %s: %s does not exist",
3115 llapi_error(LLAPI_MSG_ERROR, ret,
3116 "%s: IOC_LOV_GETINFO on %s failed",
3122 /* Check the time on osc. */
3123 decision = find_time_check(st, param, 0);
3130 if (param->check_size)
3131 decision = find_value_cmp(st->st_size, param->size,
3132 param->size_sign, param->exclude_size,
3133 param->size_units, 0);
3135 if (decision != -1) {
3136 llapi_printf(LLAPI_MSG_NORMAL, "%s", path);
3138 llapi_printf(LLAPI_MSG_NORMAL, "%c", '\0');
3140 llapi_printf(LLAPI_MSG_NORMAL, "\n");
3144 /* Do not get down anymore? */
3145 if (param->fp_depth == param->fp_max_depth)
3153 static int cb_mv_init(char *path, DIR *parent, DIR **dirp,
3154 void *param_data, struct dirent64 *de)
3156 struct find_param *param = (struct find_param *)param_data;
3158 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3160 struct obd_ioctl_data data = { 0 };
3165 LASSERT(parent != NULL || dirp != NULL);
3169 if (parent == NULL) {
3170 dir = opendir_parent(path);
3174 llapi_error(LLAPI_MSG_ERROR, ret,
3175 "can not open %s", path);
3182 filename = basename(path);
3183 data.ioc_inlbuf1 = (char *)filename;
3184 data.ioc_inllen1 = strlen(filename) + 1;
3185 data.ioc_inlbuf2 = (char *)¶m->mdtindex;
3186 data.ioc_inllen2 = sizeof(param->mdtindex);
3187 ret = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3189 llapi_error(LLAPI_MSG_ERROR, ret,
3190 "llapi_obd_statfs: error packing ioctl data");
3194 ret = ioctl(fd, LL_IOC_MIGRATE, rawbuf);
3197 fprintf(stderr, "%s migrate failed %d\n", path, ret);
3199 } else if (param->verbose & VERBOSE_DETAIL) {
3200 fprintf(stdout, "migrate %s to MDT%d\n", path, param->mdtindex);
3205 /* If the directory is being migration, we need
3206 * close the directory after migration,
3207 * so the old directory cache will be cleanup
3208 * on the client side, and re-open to get the
3209 * new directory handle */
3210 *dirp = opendir(path);
3213 llapi_error(LLAPI_MSG_ERROR, ret,
3214 "%s: Failed to open '%s'", __func__, path);
3225 int llapi_mv(char *path, struct find_param *param)
3227 return param_callback(path, cb_mv_init, cb_common_fini, param);
3230 int llapi_find(char *path, struct find_param *param)
3232 return param_callback(path, cb_find_init, cb_common_fini, param);
3236 * Get MDT number that the file/directory inode referenced
3237 * by the open fd resides on.
3238 * Return 0 and mdtidx on success, or -ve errno.
3240 int llapi_file_fget_mdtidx(int fd, int *mdtidx)
3242 if (ioctl(fd, LL_IOC_GET_MDTIDX, mdtidx) < 0)
3247 static int cb_get_mdt_index(char *path, DIR *parent, DIR **dirp, void *data,
3248 struct dirent64 *de)
3250 struct find_param *param = (struct find_param *)data;
3251 DIR *d = dirp == NULL ? NULL : *dirp;
3255 LASSERT(parent != NULL || d != NULL);
3258 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3259 } else if (parent) {
3262 fd = open(path, O_RDONLY);
3264 ret = llapi_file_fget_mdtidx(fd, &mdtidx);
3272 if (ret == -ENODATA) {
3273 if (!param->obduuid)
3274 llapi_printf(LLAPI_MSG_NORMAL,
3275 "%s has no stripe info\n", path);
3277 } else if (ret == -ENOENT) {
3278 llapi_error(LLAPI_MSG_WARN, ret,
3279 "warning: %s: %s does not exist",
3282 } else if (ret == -ENOTTY) {
3283 llapi_error(LLAPI_MSG_ERROR, ret,
3284 "%s: '%s' not on a Lustre fs?",
3287 llapi_error(LLAPI_MSG_ERROR, ret,
3288 "error: %s: LL_IOC_GET_MDTIDX failed for %s",
3294 /* The 'LASSERT(parent != NULL || d != NULL);' guarantees
3295 * that either 'd' or 'parent' is not null.
3296 * So in all cases llapi_file_fget_mdtidx() is called,
3297 * thus initializing 'mdtidx'. */
3298 if (param->quiet || !(param->verbose & VERBOSE_DETAIL))
3299 /* coverity[uninit_use_in_call] */
3300 llapi_printf(LLAPI_MSG_NORMAL, "%d\n", mdtidx);
3302 /* coverity[uninit_use_in_call] */
3303 llapi_printf(LLAPI_MSG_NORMAL, "%s\nmdt_index:\t%d\n",
3307 /* Do not get down anymore? */
3308 if (param->fp_depth == param->fp_max_depth)
3316 static int cb_getstripe(char *path, DIR *parent, DIR **dirp, void *data,
3317 struct dirent64 *de)
3319 struct find_param *param = (struct find_param *)data;
3320 DIR *d = dirp == NULL ? NULL : *dirp;
3323 LASSERT(parent != NULL || d != NULL);
3325 if (param->obduuid) {
3327 ret = setup_obd_uuid(d ? d : parent, path, param);
3333 if (param->get_lmv || param->get_default_lmv) {
3334 ret = cb_get_dirstripe(path, d, param);
3336 ret = ioctl(dirfd(d), LL_IOC_LOV_GETSTRIPE,
3337 (void *)¶m->lmd->lmd_lmm);
3340 } else if (parent && !param->get_lmv && !param->get_default_lmv) {
3341 char *fname = strrchr(path, '/');
3342 fname = (fname == NULL ? path : fname + 1);
3344 strlcpy((char *)¶m->lmd->lmd_lmm, fname, param->lumlen);
3346 ret = ioctl(dirfd(parent), IOC_MDC_GETFILESTRIPE,
3347 (void *)¶m->lmd->lmd_lmm);
3353 if (errno == ENODATA && d != NULL) {
3354 /* We need to "fake" the "use the default" values
3355 * since the lmm struct is zeroed out at this point.
3356 * The magic needs to be set in order to satisfy
3357 * a check later on in the code path.
3358 * The object_seq needs to be set for the "(Default)"
3359 * prefix to be displayed. */
3360 if (param->get_default_lmv) {
3361 struct lmv_user_md *lum = param->fp_lmv_md;
3363 lum->lum_magic = LMV_USER_MAGIC;
3364 lum->lum_stripe_count = 0;
3365 lum->lum_stripe_offset = -1;
3367 } else if (param->get_lmv) {
3368 struct lmv_user_md *lum = param->fp_lmv_md;
3371 ret = llapi_file_fget_mdtidx(dirfd(d), &mdtidx);
3374 lum->lum_magic = LMV_MAGIC_V1;
3375 lum->lum_stripe_count = 0;
3376 lum->lum_stripe_offset = mdtidx;
3379 struct lov_user_md *lmm = ¶m->lmd->lmd_lmm;
3380 lmm->lmm_magic = LOV_USER_MAGIC_V1;
3382 ostid_set_seq(&lmm->lmm_oi,
3383 FID_SEQ_LOV_DEFAULT);
3384 lmm->lmm_stripe_count = 0;
3385 lmm->lmm_stripe_size = 0;
3386 lmm->lmm_stripe_offset = -1;
3389 } else if (errno == ENODATA && parent != NULL) {
3390 if (!param->obduuid && !param->mdtuuid)
3391 llapi_printf(LLAPI_MSG_NORMAL,
3392 "%s has no stripe info\n", path);
3394 } else if (errno == ENOENT) {
3395 llapi_error(LLAPI_MSG_WARN, -ENOENT,
3396 "warning: %s: %s does not exist",
3399 } else if (errno == ENOTTY) {
3401 llapi_error(LLAPI_MSG_ERROR, ret,
3402 "%s: '%s' not on a Lustre fs?",
3407 llapi_error(LLAPI_MSG_ERROR, ret,
3408 "error: %s: %s failed for %s",
3409 __func__, d ? "LL_IOC_LOV_GETSTRIPE" :
3410 "IOC_MDC_GETFILESTRIPE", path);
3417 if (!(param->verbose & VERBOSE_MDTINDEX))
3418 llapi_lov_dump_user_lmm(param, path, d ? 1 : 0);
3421 /* Do not get down anymore? */
3422 if (param->fp_depth == param->fp_max_depth)
3430 int llapi_getstripe(char *path, struct find_param *param)
3432 return param_callback(path, (param->verbose & VERBOSE_MDTINDEX) ?
3433 cb_get_mdt_index : cb_getstripe,
3434 cb_common_fini, param);
3437 int llapi_obd_statfs(char *path, __u32 type, __u32 index,
3438 struct obd_statfs *stat_buf,
3439 struct obd_uuid *uuid_buf)
3442 char raw[OBD_MAX_IOCTL_BUFFER] = {'\0'};
3444 struct obd_ioctl_data data = { 0 };
3447 data.ioc_inlbuf1 = (char *)&type;
3448 data.ioc_inllen1 = sizeof(__u32);
3449 data.ioc_inlbuf2 = (char *)&index;
3450 data.ioc_inllen2 = sizeof(__u32);
3451 data.ioc_pbuf1 = (char *)stat_buf;
3452 data.ioc_plen1 = sizeof(struct obd_statfs);
3453 data.ioc_pbuf2 = (char *)uuid_buf;
3454 data.ioc_plen2 = sizeof(struct obd_uuid);
3456 rc = obd_ioctl_pack(&data, &rawbuf, sizeof(raw));
3458 llapi_error(LLAPI_MSG_ERROR, rc,
3459 "llapi_obd_statfs: error packing ioctl data");
3463 fd = open(path, O_RDONLY);
3464 if (errno == EISDIR)
3465 fd = open(path, O_DIRECTORY | O_RDONLY);
3468 rc = errno ? -errno : -EBADF;
3469 llapi_error(LLAPI_MSG_ERROR, rc, "error: %s: opening '%s'",
3471 /* If we can't even open a file on the filesystem (e.g. with
3472 * -ESHUTDOWN), force caller to exit or it will loop forever. */
3475 rc = ioctl(fd, IOC_OBD_STATFS, (void *)rawbuf);
3477 rc = errno ? -errno : -EINVAL;
3483 #define MAX_STRING_SIZE 128
3485 int llapi_ping(char *obd_type, char *obd_name)
3487 char path[MAX_STRING_SIZE];
3491 snprintf(path, MAX_STRING_SIZE, "/proc/fs/lustre/%s/%s/ping",
3492 obd_type, obd_name);
3494 fd = open(path, O_WRONLY);
3497 llapi_error(LLAPI_MSG_ERROR, rc, "error opening %s", path);
3501 /* The purpose is to send a byte as a ping, whatever this byte is. */
3502 /* coverity[uninit_use_in_call] */
3503 rc = write(fd, buf, 1);
3513 int llapi_target_iterate(int type_num, char **obd_type,
3514 void *args, llapi_cb_t cb)
3516 char buf[MAX_STRING_SIZE];
3517 FILE *fp = fopen(DEVICES_LIST, "r");
3522 llapi_error(LLAPI_MSG_ERROR, rc, "error: opening "DEVICES_LIST);
3526 while (fgets(buf, sizeof(buf), fp) != NULL) {
3527 char *obd_type_name = NULL;
3528 char *obd_name = NULL;
3529 char *obd_uuid = NULL;
3531 struct obd_statfs osfs_buffer;
3533 while(bufp[0] == ' ')
3536 for(i = 0; i < 3; i++) {
3537 obd_type_name = strsep(&bufp, " ");
3539 obd_name = strsep(&bufp, " ");
3540 obd_uuid = strsep(&bufp, " ");
3542 memset(&osfs_buffer, 0, sizeof (osfs_buffer));
3544 for (i = 0; i < type_num; i++) {
3545 if (strcmp(obd_type_name, obd_type[i]) != 0)
3548 cb(obd_type_name, obd_name, obd_uuid, args);
3555 static void do_target_check(char *obd_type_name, char *obd_name,
3556 char *obd_uuid, void *args)
3560 rc = llapi_ping(obd_type_name, obd_name);
3561 if (rc == ENOTCONN) {
3562 llapi_printf(LLAPI_MSG_NORMAL, "%s inactive.\n", obd_name);
3564 llapi_error(LLAPI_MSG_ERROR, rc, "error: check '%s'", obd_name);
3566 llapi_printf(LLAPI_MSG_NORMAL, "%s active.\n", obd_name);
3570 int llapi_target_check(int type_num, char **obd_type, char *dir)
3572 return llapi_target_iterate(type_num, obd_type, NULL, do_target_check);
3575 #undef MAX_STRING_SIZE
3577 /* Is this a lustre fs? */
3578 int llapi_is_lustre_mnttype(const char *type)
3580 return (strcmp(type, "lustre") == 0 || strcmp(type,"lustre_lite") == 0);
3583 /* Is this a lustre client fs? */
3584 int llapi_is_lustre_mnt(struct mntent *mnt)
3586 return (llapi_is_lustre_mnttype(mnt->mnt_type) &&
3587 strstr(mnt->mnt_fsname, ":/") != NULL);
3590 int llapi_quotacheck(char *mnt, int check_type)
3595 root = opendir(mnt);
3598 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3602 rc = ioctl(dirfd(root), OBD_IOC_QUOTACHECK, check_type);
3610 int llapi_poll_quotacheck(char *mnt, struct if_quotacheck *qchk)
3616 root = opendir(mnt);
3619 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3624 rc = ioctl(dirfd(root), OBD_IOC_POLL_QUOTACHECK, qchk);
3628 if (poll_intvl < 30)
3636 int llapi_quotactl(char *mnt, struct if_quotactl *qctl)
3641 root = opendir(mnt);
3644 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
3648 rc = ioctl(dirfd(root), OBD_IOC_QUOTACTL, qctl);
3656 static int cb_quotachown(char *path, DIR *parent, DIR **dirp, void *data,
3657 struct dirent64 *de)
3659 struct find_param *param = (struct find_param *)data;
3660 DIR *d = dirp == NULL ? NULL : *dirp;
3664 LASSERT(parent != NULL || d != NULL);
3666 rc = get_lmd_info(path, parent, d, param->lmd, param->lumlen);
3668 if (rc == -ENODATA) {
3669 if (!param->obduuid && !param->quiet)
3670 llapi_error(LLAPI_MSG_ERROR, -ENODATA,
3671 "%s has no stripe info", path);
3673 } else if (rc == -ENOENT) {
3679 st = ¶m->lmd->lmd_st;
3681 /* libc chown() will do extra check, and if the real owner is
3682 * the same as the ones to set, it won't fall into kernel, so
3683 * invoke syscall directly. */
3684 rc = syscall(SYS_chown, path, -1, -1);
3686 llapi_error(LLAPI_MSG_ERROR, errno,
3687 "error: chown %s", path);
3689 rc = chmod(path, st->st_mode);
3692 llapi_error(LLAPI_MSG_ERROR, rc, "error: chmod %s (%hu)",
3699 int llapi_quotachown(char *path, int flag)
3701 struct find_param param;
3703 memset(¶m, 0, sizeof(param));
3704 param.recursive = 1;
3708 return param_callback(path, cb_quotachown, NULL, ¶m);
3714 #include <sys/wait.h>
3718 static int rmtacl_notify(int ops)
3722 int found = 0, fd = 0, rc = 0;
3724 fp = setmntent(MOUNTED, "r");
3727 llapi_error(LLAPI_MSG_ERROR, rc,
3728 "error setmntent(%s)", MOUNTED);
3733 mnt = getmntent(fp);
3737 if (!llapi_is_lustre_mnt(mnt))
3740 fd = open(mnt->mnt_dir, O_RDONLY | O_DIRECTORY);
3743 llapi_error(LLAPI_MSG_ERROR, rc,
3744 "Can't open '%s'", mnt->mnt_dir);
3748 rc = ioctl(fd, LL_IOC_RMTACL, ops);
3752 llapi_error(LLAPI_MSG_ERROR, rc,
3753 "ioctl RMTACL on '%s' err %d",
3763 return ((rc != 0) ? rc : found);
3766 static char *next_token(char *p, int div)
3772 while (*p && *p != ':' && !isspace(*p))
3775 while (*p == ':' || isspace(*p))
3778 return *p ? p : NULL;
3781 static int rmtacl_name2id(char *name, int is_user)
3786 pw = getpwnam(name);
3790 return (int)(pw->pw_uid);
3794 gr = getgrnam(name);
3798 return (int)(gr->gr_gid);
3802 static int isodigit(int c)
3804 return (c >= '0' && c <= '7') ? 1 : 0;
3808 * Whether the name is just digits string (uid/gid) already or not.
3813 static int str_is_id(char *str)
3820 if (*str == 'x' || *str == 'X') { /* for Hex. */
3821 if (!isxdigit(*(++str)))
3824 while (isxdigit(*(++str)));
3825 } else if (isodigit(*str)) { /* for Oct. */
3826 while (isodigit(*(++str)));
3828 } else if (isdigit(*str)) { /* for Dec. */
3829 while (isdigit(*(++str)));
3832 return (*str == 0) ? 1 : 0;
3842 #define RMTACL_OPTNAME(name) name, sizeof(name) - 1
3844 static rmtacl_name_t rmtacl_namelist[] = {
3845 { RMTACL_OPTNAME("user:"), 1, 0 },
3846 { RMTACL_OPTNAME("group:"), 0, 0 },
3847 { RMTACL_OPTNAME("default:user:"), 1, 0 },
3848 { RMTACL_OPTNAME("default:group:"), 0, 0 },
3849 /* for --tabular option */
3850 { RMTACL_OPTNAME("user"), 1, 1 },
3851 { RMTACL_OPTNAME("group"), 0, 1 },
3855 static int rgetfacl_output(char *str)
3857 char *start = NULL, *end = NULL;
3858 int is_user = 0, n, id;
3865 for (rn = rmtacl_namelist; rn->name; rn++) {
3866 if(strncmp(str, rn->name, rn->length) == 0) {
3867 if (!rn->next_token)
3868 start = str + rn->length;
3870 start = next_token(str + rn->length, 0);
3871 is_user = rn->is_user;
3876 end = next_token(start, 1);
3877 if (end == NULL || start == end) {
3878 n = printf("%s", str);
3884 id = rmtacl_name2id(start, is_user);
3885 if (id == INVALID_ID) {
3886 if (str_is_id(start)) {
3888 n = printf("%s", str);
3891 } else if ((id == NOBODY_UID && is_user) ||
3892 (id == NOBODY_GID && !is_user)) {
3894 n = printf("%s", str);
3898 n = printf("%s%d%s", str, id, end);
3903 static int child_status(int status)
3905 return WIFEXITED(status) ? WEXITSTATUS(status) : -1;
3908 static int do_rmtacl(int argc, char *argv[], int ops, int (output_func)(char *))
3911 int fd[2], status, rc;
3918 llapi_error(LLAPI_MSG_ERROR, rc, "Can't create pipe");
3925 llapi_error(LLAPI_MSG_ERROR, rc, "Can't fork");
3930 /* child process redirects its output. */
3933 if (dup2(fd[1], 1) < 0) {
3935 llapi_error(LLAPI_MSG_ERROR, rc,
3936 "Can't dup2 %d", fd[1]);
3946 status = rmtacl_notify(ops);
3950 exit(execvp(argv[0], argv));
3953 /* the following is parent process */
3954 fp = fdopen(fd[0], "r");
3957 llapi_error(LLAPI_MSG_ERROR, rc, "fdopen %d failed", fd[0]);
3963 while (fgets(buf, PIPE_BUF, fp) != NULL) {
3964 if (output_func(buf) < 0)
3965 fprintf(stderr, "WARNING: unexpected error!\n[%s]\n",
3971 if (waitpid(pid, &status, 0) < 0) {
3973 llapi_error(LLAPI_MSG_ERROR, rc, "waitpid %d failed", pid);
3977 return child_status(status);
3980 int llapi_lsetfacl(int argc, char *argv[])
3982 return do_rmtacl(argc, argv, RMT_LSETFACL, NULL);
3985 int llapi_lgetfacl(int argc, char *argv[])
3987 return do_rmtacl(argc, argv, RMT_LGETFACL, NULL);
3990 int llapi_rsetfacl(int argc, char *argv[])
3992 return do_rmtacl(argc, argv, RMT_RSETFACL, NULL);
3995 int llapi_rgetfacl(int argc, char *argv[])
3997 return do_rmtacl(argc, argv, RMT_RGETFACL, rgetfacl_output);
4000 int llapi_cp(int argc, char *argv[])
4004 rc = rmtacl_notify(RMT_RSETFACL);
4008 exit(execvp(argv[0], argv));
4011 int llapi_ls(int argc, char *argv[])
4015 rc = rmtacl_notify(RMT_LGETFACL);
4019 exit(execvp(argv[0], argv));
4022 /* Print mdtname 'name' into 'buf' using 'format'. Add -MDT0000 if needed.
4023 * format must have %s%s, buf must be > 16
4024 * Eg: if name = "lustre-MDT0000", "lustre", or "lustre-MDT0000_UUID"
4025 * then buf = "lustre-MDT0000"
4027 static int get_mdtname(char *name, char *format, char *buf)
4029 char suffix[]="-MDT0000";
4030 int len = strlen(name);
4032 if ((len > 5) && (strncmp(name + len - 5, "_UUID", 5) == 0)) {
4033 name[len - 5] = '\0';
4038 if ((len <= 16) && strncmp(name + len - 8, "-MDT", 4) == 0) {
4041 /* Not enough room to add suffix */
4042 llapi_err_noerrno(LLAPI_MSG_ERROR,
4043 "MDT name too long |%s|", name);
4048 return sprintf(buf, format, name, suffix);
4051 /** ioctl on filsystem root, with mdtindex sent as data
4052 * \param mdtname path, fsname, or mdtname (lutre-MDT0004)
4053 * \param mdtidxp pointer to integer within data to be filled in with the
4054 * mdt index (0 if no mdt is specified). NULL won't be filled.
4056 int root_ioctl(const char *mdtname, int opc, void *data, int *mdtidxp,
4064 /* Take path, fsname, or MDTname. Assume MDT0000 in the former cases.
4065 Open root and parse mdt index. */
4066 if (mdtname[0] == '/') {
4068 rc = get_root_path(WANT_FD | want_error, NULL, &fd,
4069 (char *)mdtname, -1);
4071 if (get_mdtname((char *)mdtname, "%s%s", fsname) < 0)
4073 ptr = fsname + strlen(fsname) - 8;
4075 index = strtol(ptr + 4, NULL, 10);
4076 rc = get_root_path(WANT_FD | want_error, fsname, &fd, NULL, -1);
4080 llapi_err_noerrno(LLAPI_MSG_ERROR,
4081 "Can't open %s: %d\n", mdtname, rc);
4088 rc = ioctl(fd, opc, data);
4093 if (rc && want_error)
4094 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl %d err %d", opc, rc);
4100 /****** Changelog API ********/
4102 static int changelog_ioctl(const char *mdtname, int opc, int id,
4103 long long recno, int flags)
4105 struct ioc_changelog data;
4109 data.icc_recno = recno;
4110 data.icc_flags = flags;
4111 idx = (int *)(&data.icc_mdtindex);
4113 return root_ioctl(mdtname, opc, &data, idx, WANT_ERROR);
4116 #define CHANGELOG_PRIV_MAGIC 0xCA8E1080
4117 struct changelog_private {
4120 lustre_kernelcomm kuc;
4123 /** Start reading from a changelog
4124 * @param priv Opaque private control structure
4125 * @param flags Start flags (e.g. CHANGELOG_FLAG_BLOCK)
4126 * @param device Report changes recorded on this MDT
4127 * @param startrec Report changes beginning with this record number
4128 * (just call llapi_changelog_fini when done; don't need an endrec)
4130 int llapi_changelog_start(void **priv, int flags, const char *device,
4133 struct changelog_private *cp;
4136 /* Set up the receiver control struct */
4137 cp = calloc(1, sizeof(*cp));
4141 cp->magic = CHANGELOG_PRIV_MAGIC;
4144 /* Set up the receiver */
4145 rc = libcfs_ukuc_start(&cp->kuc, 0 /* no group registration */, 0);
4151 /* Tell the kernel to start sending */
4152 rc = changelog_ioctl(device, OBD_IOC_CHANGELOG_SEND, cp->kuc.lk_wfd,
4154 /* Only the kernel reference keeps the write side open */
4155 close(cp->kuc.lk_wfd);
4156 cp->kuc.lk_wfd = LK_NOFD;
4158 /* frees and clears priv */
4159 llapi_changelog_fini(priv);
4170 /** Finish reading from a changelog */
4171 int llapi_changelog_fini(void **priv)
4173 struct changelog_private *cp = (struct changelog_private *)*priv;
4175 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4178 libcfs_ukuc_stop(&cp->kuc);
4184 /** Convert a changelog_rec to changelog_ext_rec, in this way client can treat
4185 * all records in the format of changelog_ext_rec, this can make record
4188 static inline int changelog_extend_rec(struct changelog_ext_rec *ext)
4190 if (!CHANGELOG_REC_EXTENDED(ext)) {
4191 struct changelog_rec *rec = (struct changelog_rec *)ext;
4193 memmove(ext->cr_name, rec->cr_name, rec->cr_namelen);
4194 fid_zero(&ext->cr_sfid);
4195 fid_zero(&ext->cr_spfid);
4202 /** Read the next changelog entry
4203 * @param priv Opaque private control structure
4204 * @param rech Changelog record handle; record will be allocated here
4205 * @return 0 valid message received; rec is set
4209 int llapi_changelog_recv(void *priv, struct changelog_ext_rec **rech)
4211 struct changelog_private *cp = (struct changelog_private *)priv;
4212 struct kuc_hdr *kuch;
4215 if (!cp || (cp->magic != CHANGELOG_PRIV_MAGIC))
4219 kuch = malloc(KUC_CHANGELOG_MSG_MAXSIZE);
4224 rc = libcfs_ukuc_msg_get(&cp->kuc, (char *)kuch,
4225 KUC_CHANGELOG_MSG_MAXSIZE,
4226 KUC_TRANSPORT_CHANGELOG);
4230 if ((kuch->kuc_transport != KUC_TRANSPORT_CHANGELOG) ||
4231 ((kuch->kuc_msgtype != CL_RECORD) &&
4232 (kuch->kuc_msgtype != CL_EOF))) {
4233 llapi_err_noerrno(LLAPI_MSG_ERROR,
4234 "Unknown changelog message type %d:%d\n",
4235 kuch->kuc_transport, kuch->kuc_msgtype);
4240 if (kuch->kuc_msgtype == CL_EOF) {
4241 if (cp->flags & CHANGELOG_FLAG_FOLLOW) {
4250 /* Our message is a changelog_ext_rec. Use pointer math to skip
4251 * kuch_hdr and point directly to the message payload.
4253 *rech = (struct changelog_ext_rec *)(kuch + 1);
4254 changelog_extend_rec(*rech);
4264 /** Release the changelog record when done with it. */
4265 int llapi_changelog_free(struct changelog_ext_rec **rech)
4268 /* We allocated memory starting at the kuc_hdr, but passed
4269 * the consumer a pointer to the payload.
4270 * Use pointer math to get back to the header.
4272 struct kuc_hdr *kuch = (struct kuc_hdr *)*rech - 1;
4279 int llapi_changelog_clear(const char *mdtname, const char *idstr,
4285 llapi_err_noerrno(LLAPI_MSG_ERROR,
4286 "can't purge negative records\n");
4290 id = strtol(idstr + strlen(CHANGELOG_USER_PREFIX), NULL, 10);
4291 if ((id == 0) || (strncmp(idstr, CHANGELOG_USER_PREFIX,
4292 strlen(CHANGELOG_USER_PREFIX)) != 0)) {
4293 llapi_err_noerrno(LLAPI_MSG_ERROR,
4294 "expecting id of the form '"
4295 CHANGELOG_USER_PREFIX
4296 "<num>'; got '%s'\n", idstr);
4300 return changelog_ioctl(mdtname, OBD_IOC_CHANGELOG_CLEAR, id, endrec, 0);
4303 int llapi_fid2path(const char *device, const char *fidstr, char *buf,
4304 int buflen, long long *recno, int *linkno)
4307 struct getinfo_fid2path *gf;
4310 while (*fidstr == '[')
4313 sscanf(fidstr, SFID, RFID(&fid));
4314 if (!fid_is_sane(&fid)) {
4315 llapi_err_noerrno(LLAPI_MSG_ERROR,
4316 "bad FID format [%s], should be "DFID"\n",
4317 fidstr, (__u64)1, 2, 0);
4321 gf = malloc(sizeof(*gf) + buflen);
4325 gf->gf_recno = *recno;
4326 gf->gf_linkno = *linkno;
4327 gf->gf_pathlen = buflen;
4329 /* Take path or fsname */
4330 rc = root_ioctl(device, OBD_IOC_FID2PATH, gf, NULL, 0);
4333 llapi_error(LLAPI_MSG_ERROR, rc, "ioctl err %d", rc);
4335 memcpy(buf, gf->gf_path, gf->gf_pathlen);
4336 if (buf[0] == '\0') { /* ROOT path */
4340 *recno = gf->gf_recno;
4341 *linkno = gf->gf_linkno;
4348 static int fid_from_lma(const char *path, const int fd, lustre_fid *fid)
4351 struct lustre_mdt_attrs *lma;
4355 rc = fgetxattr(fd, XATTR_NAME_LMA, buf, sizeof(buf));
4357 rc = lgetxattr(path, XATTR_NAME_LMA, buf, sizeof(buf));
4360 lma = (struct lustre_mdt_attrs *)buf;
4361 fid_le_to_cpu(fid, &lma->lma_self_fid);
4365 int llapi_get_mdt_index_by_fid(int fd, const lustre_fid *fid,
4370 rc = ioctl(fd, LL_IOC_FID2MDTIDX, fid);
4379 int llapi_fd2fid(const int fd, lustre_fid *fid)
4383 memset(fid, 0, sizeof(*fid));
4385 rc = ioctl(fd, LL_IOC_PATH2FID, fid) < 0 ? -errno : 0;
4386 if (rc == -EINVAL || rc == -ENOTTY)
4387 rc = fid_from_lma(NULL, fd, fid);
4392 int llapi_path2fid(const char *path, lustre_fid *fid)
4396 memset(fid, 0, sizeof(*fid));
4397 fd = open(path, O_RDONLY | O_NONBLOCK | O_NOFOLLOW);
4399 if (errno == ELOOP || errno == ENXIO)
4400 return fid_from_lma(path, -1, fid);
4404 rc = llapi_fd2fid(fd, fid);
4405 if (rc == -EINVAL || rc == -ENOTTY)
4406 rc = fid_from_lma(path, -1, fid);
4412 int llapi_get_connect_flags(const char *mnt, __u64 *flags)
4417 root = opendir(mnt);
4420 llapi_error(LLAPI_MSG_ERROR, rc, "open %s failed", mnt);
4424 rc = ioctl(dirfd(root), LL_IOC_GET_CONNECT_FLAGS, flags);
4427 llapi_error(LLAPI_MSG_ERROR, rc,
4428 "ioctl on %s for getting connect flags failed", mnt);
4434 int llapi_get_version(char *buffer, int buffer_size,
4439 struct obd_ioctl_data *data = (struct obd_ioctl_data *)buffer;
4441 fd = open(OBD_DEV_PATH, O_RDONLY);
4445 memset(buffer, 0, buffer_size);
4446 data->ioc_version = OBD_IOCTL_VERSION;
4447 data->ioc_inllen1 = buffer_size - cfs_size_round(sizeof(*data));
4448 data->ioc_inlbuf1 = buffer + cfs_size_round(sizeof(*data));
4449 data->ioc_len = obd_ioctl_packlen(data);
4451 rc = ioctl(fd, OBD_GET_VERSION, buffer);
4458 *version = data->ioc_bulk;
4463 * Get a 64-bit value representing the version of file data pointed by fd.
4465 * Each write or truncate, flushed on OST, will change this value. You can use
4466 * this value to verify if file data was modified. This only checks the file
4467 * data, not metadata.
4469 * \param flags 0: no flush pages, usually used it the process has already
4471 * LL_DV_RD_FLUSH: OSTs will take LCK_PR to flush dirty pages
4473 * LL_DV_WR_FLUSH: OSTs will take LCK_PW to flush all caching
4474 * pages from clients.
4476 * \retval 0 on success.
4477 * \retval -errno on error.
4479 int llapi_get_data_version(int fd, __u64 *data_version, __u64 flags)
4482 struct ioc_data_version idv;
4484 idv.idv_flags = flags;
4486 rc = ioctl(fd, LL_IOC_DATA_VERSION, &idv);
4490 *data_version = idv.idv_version;
4496 * Create a file without any name open it for read/write
4498 * - file is created as if it were a standard file in the given \a directory
4499 * - file does not appear in \a directory and mtime does not change because
4500 * the filename is handled specially by the Lustre MDS.
4501 * - file is removed at final close
4502 * - file modes are rw------- since it doesn't make sense to have a read-only
4503 * or write-only file that cannot be opened again.
4504 * - if user wants another mode it must use fchmod() on the open file, no
4505 * security problems arise because it cannot be opened by another process.
4507 * \param[in] directory directory from which to inherit layout/MDT idx
4508 * \param[in] idx MDT index on which the file is created,
4509 * \a idx == -1 means no specific MDT is requested
4510 * \param[in] open_flags standard open(2) flags
4512 * \retval 0 on success.
4513 * \retval -errno on error.
4515 int llapi_create_volatile_idx(char *directory, int idx, int open_flags)
4517 char file_path[PATH_MAX];
4518 char filename[PATH_MAX];
4523 fd = open("/dev/urandom", O_RDONLY);
4525 llapi_error(LLAPI_MSG_ERROR, errno,
4526 "Cannot open /dev/urandom");
4529 rc = read(fd, &random, sizeof(random));
4531 if (rc < sizeof(random)) {
4532 llapi_error(LLAPI_MSG_ERROR, errno,
4533 "cannot read %zu bytes from /dev/urandom",
4538 snprintf(filename, sizeof(filename),
4539 LUSTRE_VOLATILE_HDR"::%.4X", random);
4541 snprintf(filename, sizeof(filename),
4542 LUSTRE_VOLATILE_HDR":%.4X:%.4X", idx, random);
4544 rc = snprintf(file_path, sizeof(file_path),
4545 "%s/%s", directory, filename);
4546 if (rc >= sizeof(file_path))
4549 fd = open(file_path, O_RDWR | O_CREAT | open_flags, S_IRUSR | S_IWUSR);
4551 llapi_error(LLAPI_MSG_ERROR, errno,
4552 "Cannot create volatile file '%s' in '%s'",
4553 filename + LUSTRE_VOLATILE_HDR_LEN,
4557 /* unlink file in case this wasn't a Lustre filesystem, and the
4558 * magic volatile filename wasn't handled as intended. The effect
4566 * Swap the layouts between 2 file descriptors
4567 * the 2 files must be open in write
4568 * first fd received the ioctl, second fd is passed as arg
4569 * this is assymetric but avoid use of root path for ioctl
4571 int llapi_fswap_layouts(int fd1, int fd2, __u64 dv1, __u64 dv2, __u64 flags)
4573 struct lustre_swap_layouts lsl;
4576 srandom(time(NULL));
4578 lsl.sl_flags = flags;
4579 lsl.sl_gid = random();
4582 rc = ioctl(fd1, LL_IOC_LOV_SWAP_LAYOUTS, &lsl);
4589 * Swap the layouts between 2 files
4590 * the 2 files are open in write
4592 int llapi_swap_layouts(const char *path1, const char *path2,
4593 __u64 dv1, __u64 dv2, __u64 flags)
4597 fd1 = open(path1, O_WRONLY | O_LOV_DELAY_CREATE);
4600 llapi_error(LLAPI_MSG_ERROR, rc,
4601 "error: cannot open '%s' for write", path1);
4605 fd2 = open(path2, O_WRONLY | O_LOV_DELAY_CREATE);
4608 llapi_error(LLAPI_MSG_ERROR, rc,
4609 "error: cannot open '%s' for write", path2);
4613 rc = llapi_fswap_layouts(fd1, fd2, dv1, dv2, flags);
4615 llapi_error(LLAPI_MSG_ERROR, rc,
4616 "error: cannot swap layout between '%s' and '%s'",