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.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
26 * Copyright (c) 2011, 2016, Intel Corporation.
29 * This file is part of Lustre, http://www.lustre.org/
30 * Lustre is a trademark of Sun Microsystems, Inc.
32 * lustre/utils/lustre_cfg.c
34 * Author: Peter J. Braam <braam@clusterfs.com>
35 * Author: Phil Schwan <phil@clusterfs.com>
36 * Author: Andreas Dilger <adilger@clusterfs.com>
37 * Author: Robert Read <rread@clusterfs.com>
46 #include <sys/ioctl.h>
53 #include <libcfs/util/ioctl.h>
54 #include <libcfs/util/string.h>
55 #include <libcfs/util/param.h>
56 #include <libcfs/util/parser.h>
57 #include <lustre/lustreapi.h>
58 #include <linux/lnet/nidstr.h>
59 #include <linux/lnet/lnetctl.h>
60 #include <linux/lustre/lustre_cfg.h>
61 #include <linux/lustre/lustre_ioctl.h>
62 #include <linux/lustre/lustre_ver.h>
74 static char *lcfg_devname;
76 int lcfg_set_devname(char *name)
84 /* quietly strip the unnecessary '$' */
85 if (*name == '$' || *name == '%')
89 while (*ptr != '\0') {
98 /* We can't translate from dev # to name */
101 lcfg_devname = strdup(name);
109 char *lcfg_get_devname(void)
114 int jt_lcfg_device(int argc, char **argv)
116 return jt_obd_device(argc, argv);
119 static int jt_lcfg_ioctl(struct lustre_cfg_bufs *bufs, char *arg, int cmd)
121 struct lustre_cfg *lcfg;
124 lcfg = malloc(lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
128 lustre_cfg_init(lcfg, cmd, bufs);
129 rc = lcfg_ioctl(arg, OBD_DEV_ID, lcfg);
133 fprintf(stderr, "error: %s: %s\n", jt_cmdname(arg),
134 strerror(rc = errno));
138 int jt_lcfg_attach(int argc, char **argv)
140 struct lustre_cfg_bufs bufs;
146 lustre_cfg_bufs_reset(&bufs, NULL);
148 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
149 lustre_cfg_bufs_set_string(&bufs, 0, argv[2]);
150 lustre_cfg_bufs_set_string(&bufs, 2, argv[3]);
152 rc = jt_lcfg_ioctl(&bufs, argv[0], LCFG_ATTACH);
154 lcfg_set_devname(argv[2]);
159 int jt_lcfg_setup(int argc, char **argv)
161 struct lustre_cfg_bufs bufs;
166 "%s: please use 'device name' to set the device name for config commands.\n",
167 jt_cmdname(argv[0]));
171 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
176 for (i = 1; i < argc; i++)
177 lustre_cfg_bufs_set_string(&bufs, i, argv[i]);
179 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_SETUP);
182 int jt_obd_detach(int argc, char **argv)
184 struct lustre_cfg_bufs bufs;
188 "%s: please use 'device name' to set the device name for config commands.\n",
189 jt_cmdname(argv[0]));
193 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
198 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DETACH);
201 int jt_obd_cleanup(int argc, char **argv)
203 struct lustre_cfg_bufs bufs;
206 char flags[3] = { 0 };
211 "%s: please use 'device name' to set the device name for config commands.\n",
212 jt_cmdname(argv[0]));
216 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
218 if (argc < 1 || argc > 3)
222 * we are protected from overflowing our buffer by the argc
225 for (n = 1; n < argc; n++) {
226 if (strcmp(argv[n], "force") == 0) {
227 flags[flag_cnt++] = force;
228 } else if (strcmp(argv[n], "failover") == 0) {
229 flags[flag_cnt++] = failover;
231 fprintf(stderr, "unknown option: %s\n", argv[n]);
237 lustre_cfg_bufs_set_string(&bufs, 1, flags);
239 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_CLEANUP);
243 int do_add_uuid(char *func, char *uuid, lnet_nid_t nid)
246 struct lustre_cfg_bufs bufs;
247 struct lustre_cfg *lcfg;
249 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
251 lustre_cfg_bufs_set_string(&bufs, 1, uuid);
253 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
257 lustre_cfg_init(lcfg, LCFG_ADD_UUID, &bufs);
258 lcfg->lcfg_nid = nid;
260 rc = lcfg_ioctl(func, OBD_DEV_ID, lcfg);
264 fprintf(stderr, "IOC_PORTAL_ADD_UUID failed: %s\n",
270 printf("Added uuid %s: %s\n", uuid, libcfs_nid2str(nid));
275 int jt_lcfg_add_uuid(int argc, char **argv)
282 nid = libcfs_str2nid(argv[2]);
283 if (nid == LNET_NID_ANY) {
284 fprintf(stderr, "Can't parse NID %s\n", argv[2]);
288 return do_add_uuid(argv[0], argv[1], nid);
291 int jt_lcfg_del_uuid(int argc, char **argv)
293 struct lustre_cfg_bufs bufs;
296 fprintf(stderr, "usage: %s <uuid>\n", argv[0]);
300 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
301 if (strcmp(argv[1], "_all_"))
302 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
304 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_UUID);
307 int jt_lcfg_del_mount_option(int argc, char **argv)
309 struct lustre_cfg_bufs bufs;
314 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
317 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
319 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_MOUNTOPT);
322 int jt_lcfg_set_timeout(int argc, char **argv)
325 struct lustre_cfg_bufs bufs;
326 struct lustre_cfg *lcfg;
329 "%s has been deprecated. Use conf_param instead.\ne.g. conf_param lustre-MDT0000 obd_timeout=50\n",
330 jt_cmdname(argv[0]));
336 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
338 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
342 lustre_cfg_init(lcfg, LCFG_SET_TIMEOUT, &bufs);
343 lcfg->lcfg_num = atoi(argv[1]);
345 rc = lcfg_ioctl(argv[0], OBD_DEV_ID, lcfg);
349 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
350 strerror(rc = errno));
355 int jt_lcfg_add_conn(int argc, char **argv)
357 struct lustre_cfg_bufs bufs;
358 struct lustre_cfg *lcfg;
371 "%s: please use 'device name' to set the device name for config commands.\n",
372 jt_cmdname(argv[0]));
376 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
378 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
380 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
384 lustre_cfg_init(lcfg, LCFG_ADD_CONN, &bufs);
385 lcfg->lcfg_num = priority;
387 rc = lcfg_ioctl(argv[0], OBD_DEV_ID, lcfg);
391 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
392 strerror(rc = errno));
398 int jt_lcfg_del_conn(int argc, char **argv)
400 struct lustre_cfg_bufs bufs;
407 "%s: please use 'device name' to set the device name for config commands.\n",
408 jt_cmdname(argv[0]));
412 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
414 /* connection uuid */
415 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
417 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_MOUNTOPT);
420 /* Param set locally, directly on target */
421 int jt_lcfg_param(int argc, char **argv)
423 struct lustre_cfg_bufs bufs;
426 if (argc >= LUSTRE_CFG_MAX_BUFCOUNT)
429 lustre_cfg_bufs_reset(&bufs, NULL);
431 for (i = 1; i < argc; i++)
432 lustre_cfg_bufs_set_string(&bufs, i, argv[i]);
434 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_PARAM);
438 unsigned int po_only_path:1;
439 unsigned int po_show_path:1;
440 unsigned int po_show_type:1;
441 unsigned int po_recursive:1;
442 unsigned int po_perm:1;
443 unsigned int po_delete:1;
444 unsigned int po_only_dir:1;
445 unsigned int po_file:1;
448 int lcfg_setparam_perm(char *func, char *buf)
451 struct lustre_cfg_bufs bufs;
452 struct lustre_cfg *lcfg;
454 lustre_cfg_bufs_reset(&bufs, NULL);
456 * This same command would be executed on all nodes, many
457 * of which should fail (silently) because they don't have
458 * that proc file existing locally. There would be no
459 * preprocessing on the MGS to try to figure out which
460 * parameter files to add this to, there would be nodes
461 * processing on the cluster nodes to try to figure out
462 * if they are the intended targets. They will blindly
463 * try to set the parameter, and ENOTFOUND means it wasn't
465 * Target name "general" means call on all targets. It is
466 * left here in case some filtering will be added in
469 lustre_cfg_bufs_set_string(&bufs, 0, "general");
471 lustre_cfg_bufs_set_string(&bufs, 1, buf);
473 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount,
477 fprintf(stderr, "error: allocating lcfg for %s: %s\n",
478 jt_cmdname(func), strerror(rc));
481 lustre_cfg_init(lcfg, LCFG_SET_PARAM, &bufs);
482 rc = lcfg_mgs_ioctl(func, OBD_DEV_ID, lcfg);
484 fprintf(stderr, "error: executing %s: %s\n",
485 jt_cmdname(func), strerror(errno));
493 * Param set to single log file, used by all clients and servers.
494 * This should be loaded after the individual config logs.
495 * Called from set param with -P option.
497 static int jt_lcfg_setparam_perm(int argc, char **argv,
498 struct param_opts *popt)
506 first_param = optind;
507 if (first_param < 0 || first_param >= argc)
510 for (i = first_param, rc = 0; i < argc; i++) {
511 len = strlen(argv[i]);
515 /* put an '=' on the end in case it doesn't have one */
516 if (popt->po_delete && argv[i][len - 1] != '=') {
517 buf = malloc(len + 1);
522 sprintf(buf, "%s=", argv[i]);
525 rc = lcfg_setparam_perm(argv[0], buf);
534 int lcfg_conf_param(char *func, char *buf)
537 struct lustre_cfg_bufs bufs;
538 struct lustre_cfg *lcfg;
540 lustre_cfg_bufs_reset(&bufs, NULL);
541 lustre_cfg_bufs_set_string(&bufs, 1, buf);
543 /* We could put other opcodes here. */
544 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
548 lustre_cfg_init(lcfg, LCFG_PARAM, &bufs);
549 rc = lcfg_mgs_ioctl(func, OBD_DEV_ID, lcfg);
559 * Param set in config log on MGS
560 * conf_param key=value
562 * Note we can actually send mgc conf_params from clients, but currently
563 * that's only done for default file striping (see ll_send_mgc_param),
566 * After removal of a parameter (-d) Lustre will use the default
567 * AT NEXT REBOOT, not immediately.
569 int jt_lcfg_confparam(int argc, char **argv)
575 /* mgs_setparam processes only lctl buf #1 */
576 if ((argc > 3) || (argc <= 1))
579 while ((rc = getopt(argc, argv, "d")) != -1) {
594 /* for delete, make it "<param>=\0" */
595 buf = malloc(strlen(argv[optind]) + 2);
600 /* put an '=' on the end in case it doesn't have one */
601 sprintf(buf, "%s=", argv[optind]);
602 /* then truncate after the first '=' */
603 ptr = strchr(buf, '=');
607 rc = lcfg_conf_param(argv[0], buf);
609 if (buf != argv[optind])
613 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
621 * Display a parameter path in the same format as sysctl.
622 * E.g. obdfilter.lustre-OST0000.stats
624 * \param[in] filename file name of the parameter
625 * \param[in] st parameter file stats
626 * \param[in] popt set/get param options
628 * \retval allocated pointer containing modified filename
631 display_name(const char *filename, struct stat *st, struct param_opts *popt)
633 size_t suffix_len = 0;
638 if (popt->po_show_type) {
639 if (S_ISDIR(st->st_mode))
641 else if (S_ISLNK(st->st_mode))
643 else if (st->st_mode & S_IWUSR)
647 /* Take the original filename string and chop off the glob addition */
648 tmp = strstr(filename, "/lustre/");
650 tmp = strstr(filename, "/lnet/");
652 tmp += strlen("/lnet/");
654 tmp += strlen("/lustre/");
657 /* Allocate return string */
658 param_name = strdup(tmp);
662 /* replace '/' with '.' to match conf_param and sysctl */
663 for (tmp = strchr(param_name, '/'); tmp != NULL; tmp = strchr(tmp, '/'))
666 /* Append the indicator to entries if needed. */
667 if (popt->po_show_type && suffix != NULL) {
668 suffix_len = strlen(suffix);
670 tmp = realloc(param_name, suffix_len + strlen(param_name) + 1);
673 strncat(param_name, suffix,
674 strlen(param_name) + suffix_len);
681 /* Find a character in a length limited string */
682 /* BEWARE - kernel definition of strnchr has args in different order! */
683 static char *strnchr(const char *p, char c, size_t n)
697 * Turns a lctl parameter string into a procfs/sysfs subdirectory path pattern.
699 * \param[in] popt Used to control parameter usage. For this
700 * function it is used to see if the path has
702 * \param[in,out] path lctl parameter string that is turned into
703 * the subdirectory path pattern that is used
704 * to search the procfs/sysfs tree.
706 * \retval -errno on error.
709 clean_path(struct param_opts *popt, char *path)
714 if (popt == NULL || path == NULL || strlen(path) == 0)
717 /* If path contains a suffix we need to remove it */
718 if (popt->po_show_type) {
719 size_t path_end = strlen(path) - 1;
721 tmp = path + path_end;
732 /* get rid of '\', glob doesn't like it */
733 tmp = strrchr(path, '\\');
735 char *tail = path + strlen(path);
737 while (tmp != path) {
739 memmove(tmp, tmp + 1, tail - tmp);
746 /* Does this path contain a NID string ? */
747 tmp = strchr(path, '@');
749 char *find_nid = strdup(path);
756 * First we need to chop off rest after nid string.
757 * Since find_nid is a clone of path it better have '@'
759 tmp = strchr(find_nid, '@');
760 tmp = strchr(tmp, '.');
764 /* Now chop off the front. */
765 for (tmp = strchr(find_nid, '.'); tmp != NULL;
766 tmp = strchr(tmp, '.')) {
767 /* Remove MGC to make it NID format */
768 if (!strncmp(++tmp, "MGC", 3))
771 nid = libcfs_str2nid(tmp);
772 if (nid != LNET_NID_ANY) {
773 nidstr = libcfs_nid2str(nid);
782 /* replace param '.' with '/' */
783 for (tmp = strchr(path, '.'); tmp != NULL; tmp = strchr(tmp, '.')) {
786 /* Remove MGC to make it NID format */
787 if (!strncmp(tmp, "MGC", 3))
791 * There exist cases where some of the subdirectories of the
792 * the parameter tree has embedded in its name a NID string.
793 * This means that it is possible that these subdirectories
794 * could have actual '.' in its name. If this is the case we
795 * don't want to blindly replace the '.' with '/'.
798 char *match = strstr(tmp, nidstr);
801 tmp += strlen(nidstr);
809 * The application lctl can perform three operations for lustre
810 * tunables. This enum defines those three operations which are
812 * 1) LIST_PARAM - list available tunables
813 * 2) GET_PARAM - report the current setting of a tunable
814 * 3) SET_PARAM - set the tunable to a new value
816 enum parameter_operation {
822 char *parameter_opname[] = {
823 [LIST_PARAM] = "list_param",
824 [GET_PARAM] = "get_param",
825 [SET_PARAM] = "set_param",
829 * Read the value of parameter
831 * \param[in] path full path to the parameter
832 * \param[in] param_name lctl parameter format of the
834 * \param[in] popt set/get param options
836 * \retval 0 on success.
837 * \retval -errno on error.
840 read_param(const char *path, const char *param_name, struct param_opts *popt)
846 rc = llapi_param_get_value(path, &buf, &buflen);
849 "error: read_param: \'%s\': %s\n",
850 path, strerror(-rc));
853 /* don't print anything for empty files */
857 if (popt->po_show_path) {
860 longbuf = strnchr(buf, buflen - 1, '\n') != NULL ||
861 buflen + strlen(param_name) >= 80;
862 printf("%s=%s", param_name, longbuf ? "\n" : "");
872 * Set a parameter to a specified value
874 * \param[in] path full path to the parameter
875 * \param[in] param_name lctl parameter format of the parameter path
876 * \param[in] popt set/get param options
877 * \param[in] value value to set the parameter to
879 * \retval number of bytes written on success.
880 * \retval -errno on error.
883 write_param(const char *path, const char *param_name, struct param_opts *popt,
892 /* Write the new value to the file */
893 fd = open(path, O_WRONLY);
896 fprintf(stderr, "error: set_param: opening '%s': %s\n",
897 path, strerror(errno));
901 count = write(fd, value, strlen(value));
905 fprintf(stderr, "error: set_param: setting %s=%s: %s\n",
906 path, value, strerror(errno));
908 } else if (count < strlen(value)) { /* Truncate case */
911 "error: set_param: setting %s=%s: wrote only %zd\n",
913 } else if (popt->po_show_path) {
914 printf("%s=%s\n", param_name, value);
922 * Perform a read, write or just a listing of a parameter
924 * \param[in] popt list,set,get parameter options
925 * \param[in] pattern search filter for the path of the parameter
926 * \param[in] value value to set the parameter if write operation
927 * \param[in] mode what operation to perform with the parameter
929 * \retval number of bytes written on success.
930 * \retval -errno on error and prints error message.
933 param_display(struct param_opts *popt, char *pattern, char *value,
934 enum parameter_operation mode)
939 char *opname = parameter_opname[mode];
942 rc = llapi_param_get_paths(pattern, &paths);
945 if (!popt->po_recursive) {
946 fprintf(stderr, "error: %s: param_path '%s': %s\n",
947 opname, pattern, strerror(errno));
952 dup_cache = calloc(paths.gl_pathc, sizeof(char *));
956 "error: %s: allocating '%s' dup_cache[%zd]: %s\n",
957 opname, pattern, paths.gl_pathc, strerror(-rc));
961 for (i = 0; i < paths.gl_pathc; i++) {
962 char *param_name = NULL, *tmp;
963 char pathname[PATH_MAX], param_dir[PATH_MAX + 2];
967 if (stat(paths.gl_pathv[i], &st) == -1) {
968 fprintf(stderr, "error: %s: stat '%s': %s\n",
969 opname, paths.gl_pathv[i], strerror(errno));
975 if (popt->po_only_dir && !S_ISDIR(st.st_mode))
978 param_name = display_name(paths.gl_pathv[i], &st, popt);
981 "error: %s: generating name for '%s': %s\n",
982 opname, paths.gl_pathv[i], strerror(ENOMEM));
990 /* Read the contents of file to stdout */
991 if (S_ISREG(st.st_mode)) {
992 rc2 = read_param(paths.gl_pathv[i], param_name,
994 if (rc2 < 0 && rc == 0)
999 if (S_ISREG(st.st_mode)) {
1000 rc2 = write_param(paths.gl_pathv[i],
1001 param_name, popt, value);
1002 if (rc2 < 0 && rc == 0)
1008 * For the upstream client the parameter files locations
1009 * are split between under both /sys/kernel/debug/lustre
1010 * and /sys/fs/lustre. The parameter files containing
1011 * small amounts of data, less than a page in size, are
1012 * located under /sys/fs/lustre and in the case of large
1013 * parameter data files, think stats for example, are
1014 * located in the debugfs tree. Since the files are
1015 * split across two trees the directories are often
1016 * duplicated which means these directories are listed
1017 * twice which leads to duplicate output to the user.
1018 * To avoid scanning a directory twice we have to cache
1019 * any directory and check if a search has been
1022 for (j = 0; j < dup_count; j++) {
1023 if (!strcmp(dup_cache[j], param_name))
1026 if (j != dup_count) {
1031 dup_cache[dup_count++] = strdup(param_name);
1033 if (popt->po_show_path)
1034 printf("%s\n", param_name);
1039 * Only directories are searched recursively if
1040 * requested by the user
1042 if (!S_ISDIR(st.st_mode) || !popt->po_recursive) {
1048 /* Turn param_name into file path format */
1049 rc2 = clean_path(popt, param_name);
1051 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1052 opname, param_name, strerror(-rc2));
1060 /* Use param_name to grab subdirectory tree from full path */
1061 snprintf(param_dir, sizeof(param_dir), "/%s", param_name);
1062 tmp = strstr(paths.gl_pathv[i], param_dir);
1064 /* cleanup paramname now that we are done with it */
1067 memset(¶m_dir, '\0', sizeof(param_dir));
1069 /* Shouldn't happen but just in case */
1077 rc2 = snprintf(pathname, sizeof(pathname), "%s/*", tmp);
1080 * snprintf() should never an error, and if it does
1081 * there isn't much point trying to use fprintf()
1085 if (rc2 >= sizeof(pathname)) {
1086 fprintf(stderr, "error: %s: overflow processing '%s'\n",
1093 rc2 = param_display(popt, pathname, value, mode);
1094 if (rc2 != 0 && rc2 != -ENOENT) {
1095 /* errors will be printed by param_display() */
1102 for (i = 0; i < dup_count; i++)
1106 llapi_param_paths_free(&paths);
1110 static int listparam_cmdline(int argc, char **argv, struct param_opts *popt)
1114 popt->po_show_path = 1;
1115 popt->po_only_path = 1;
1117 while ((ch = getopt(argc, argv, "FRD")) != -1) {
1120 popt->po_show_type = 1;
1123 popt->po_recursive = 1;
1126 popt->po_only_dir = 1;
1136 int jt_lcfg_listparam(int argc, char **argv)
1138 int rc = 0, index, i;
1139 struct param_opts popt;
1142 memset(&popt, 0, sizeof(popt));
1143 index = listparam_cmdline(argc, argv, &popt);
1144 if (index < 0 || index >= argc)
1147 for (i = index; i < argc; i++) {
1152 rc2 = clean_path(&popt, path);
1154 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1155 jt_cmdname(argv[0]), path, strerror(-rc2));
1161 rc2 = param_display(&popt, path, NULL, LIST_PARAM);
1163 fprintf(stderr, "error: %s: listing '%s': %s\n",
1164 jt_cmdname(argv[0]), path, strerror(-rc2));
1174 static int getparam_cmdline(int argc, char **argv, struct param_opts *popt)
1178 popt->po_show_path = 1;
1180 while ((ch = getopt(argc, argv, "FnNR")) != -1) {
1183 popt->po_show_type = 1;
1186 popt->po_show_path = 0;
1189 popt->po_only_path = 1;
1192 popt->po_recursive = 1;
1202 int jt_lcfg_getparam(int argc, char **argv)
1204 int rc = 0, index, i;
1205 struct param_opts popt;
1208 memset(&popt, 0, sizeof(popt));
1209 index = getparam_cmdline(argc, argv, &popt);
1210 if (index < 0 || index >= argc)
1213 for (i = index; i < argc; i++) {
1218 rc2 = clean_path(&popt, path);
1220 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1221 jt_cmdname(argv[0]), path, strerror(-rc2));
1227 rc2 = param_display(&popt, path, NULL,
1228 popt.po_only_path ? LIST_PARAM : GET_PARAM);
1240 * Output information about nodemaps.
1241 * \param argc number of args
1242 * \param argv[] variable string arguments
1244 * [list|nodemap_name|all] \a list will list all nodemaps (default).
1245 * Specifying a \a nodemap_name will
1246 * display info about that specific nodemap.
1247 * \a all will display info for all nodemaps.
1248 * \retval 0 on success
1250 int jt_nodemap_info(int argc, char **argv)
1252 const char usage_str[] = "usage: nodemap_info [list|nodemap_name|all]\n";
1253 struct param_opts popt;
1256 memset(&popt, 0, sizeof(popt));
1257 popt.po_show_path = 1;
1260 fprintf(stderr, usage_str);
1264 if (argc == 1 || strcmp("list", argv[1]) == 0) {
1265 popt.po_only_path = 1;
1266 popt.po_only_dir = 1;
1267 rc = param_display(&popt, "nodemap/*", NULL, LIST_PARAM);
1268 } else if (strcmp("all", argv[1]) == 0) {
1269 rc = param_display(&popt, "nodemap/*/*", NULL, LIST_PARAM);
1271 char pattern[PATH_MAX];
1273 snprintf(pattern, sizeof(pattern), "nodemap/%s/*", argv[1]);
1274 rc = param_display(&popt, pattern, NULL, LIST_PARAM);
1277 "error: nodemap_info: cannot find nodemap %s\n",
1283 static int setparam_cmdline(int argc, char **argv, struct param_opts *popt)
1287 popt->po_show_path = 1;
1288 popt->po_only_path = 0;
1289 popt->po_show_type = 0;
1290 popt->po_recursive = 0;
1292 popt->po_delete = 0;
1295 while ((ch = getopt(argc, argv, "nPdF")) != -1) {
1298 popt->po_show_path = 0;
1304 popt->po_delete = 1;
1323 #define PS_PARAM_FOUND 1
1324 #define PS_PARAM_SET 2
1325 #define PS_VAL_FOUND 4
1326 #define PS_VAL_SET 8
1327 #define PS_DEVICE_FOUND 16
1328 #define PS_DEVICE_SET 32
1330 #define PARAM_SZ 256
1332 static struct cfg_type_data {
1333 enum paramtype ptype;
1335 } cfg_type_table[] = {
1336 { PT_SETPARAM, "set_param" },
1337 { PT_CONFPARAM, "conf_param" },
1341 static struct cfg_stage_data {
1344 } cfg_stage_table[] = {
1345 { PS_PARAM_FOUND, "parameter" },
1346 { PS_VAL_FOUND, "value" },
1347 { PS_DEVICE_FOUND, "device" },
1351 void conf_to_set_param(enum paramtype confset, const char *param,
1352 const char *device, char *buf,
1357 if (confset == PT_SETPARAM) {
1358 strncpy(buf, param, bufsize);
1363 * sys.* params are top level, we just need to trim the sys.
1365 tmp = strstr(param, "sys.");
1368 strncpy(buf, tmp, bufsize);
1373 * parameters look like type.parameter, we need to stick the device
1374 * in the middle. Example combine mdt.identity_upcall with device
1375 * lustre-MDT0000 for mdt.lustre-MDT0000.identity_upcall
1378 tmp = strchrnul(param, '.');
1379 snprintf(buf, tmp - param + 1, "%s", param);
1381 bufsize -= tmp - param;
1382 snprintf(buf, bufsize, ".%s%s", device, tmp);
1385 int lcfg_setparam_yaml(char *func, char *filename)
1388 yaml_parser_t parser;
1392 enum paramtype confset = PT_NONE;
1393 int param = PS_NONE;
1395 char parameter[PARAM_SZ + 1];
1396 char value[PARAM_SZ + 1];
1397 char device[PARAM_SZ + 1];
1399 file = fopen(filename, "rb");
1400 yaml_parser_initialize(&parser);
1401 yaml_parser_set_input_file(&parser, file);
1404 * Search tokens for conf_param or set_param
1405 * The token after "parameter" goes into parameter
1406 * The token after "value" goes into value
1407 * when we have all 3, create param=val and call the
1408 * appropriate function for set/conf param
1410 while (token.type != YAML_STREAM_END_TOKEN && rc == 0) {
1413 yaml_token_delete(&token);
1414 if (!yaml_parser_scan(&parser, &token)) {
1419 if (token.type != YAML_SCALAR_TOKEN)
1422 for (i = 0; cfg_type_table[i].ptype != PT_NONE; i++) {
1423 if (!strncmp((char *)token.data.alias.value,
1424 cfg_type_table[i].type_name,
1425 strlen(cfg_type_table[i].type_name))) {
1426 confset = cfg_type_table[i].ptype;
1431 if (confset == PT_NONE)
1434 for (i = 0; cfg_stage_table[i].pstage != PS_NONE; i++) {
1435 if (!strncmp((char *)token.data.alias.value,
1436 cfg_stage_table[i].stage_name,
1437 strlen(cfg_stage_table[i].stage_name))) {
1438 param |= cfg_stage_table[i].pstage;
1443 if (cfg_stage_table[i].pstage != PS_NONE)
1446 if (param & PS_PARAM_FOUND) {
1447 conf_to_set_param(confset,
1448 (char *)token.data.alias.value,
1449 device, parameter, PARAM_SZ);
1450 param |= PS_PARAM_SET;
1451 param &= ~PS_PARAM_FOUND;
1454 * we're getting parameter: param=val
1455 * copy val and mark that we've got it in case
1456 * there is no value: tag
1458 tmp = strchrnul(parameter, '=');
1460 strncpy(value, tmp + 1, sizeof(value) - 1);
1462 param |= PS_VAL_SET;
1466 } else if (param & PS_VAL_FOUND) {
1467 strncpy(value, (char *)token.data.alias.value,
1469 param |= PS_VAL_SET;
1470 param &= ~PS_VAL_FOUND;
1471 } else if (param & PS_DEVICE_FOUND) {
1472 strncpy(device, (char *)token.data.alias.value,
1474 param |= PS_DEVICE_SET;
1475 param &= ~PS_DEVICE_FOUND;
1478 if (confset && param & PS_VAL_SET && param & PS_PARAM_SET) {
1479 int size = strlen(parameter) + strlen(value) + 2;
1480 char *buf = malloc(size);
1486 snprintf(buf, size, "%s=%s", parameter, value);
1488 printf("set_param: %s\n", buf);
1489 rc = lcfg_setparam_perm(func, buf);
1493 parameter[0] = '\0';
1500 yaml_parser_delete(&parser);
1506 int jt_lcfg_setparam(int argc, char **argv)
1508 int rc = 0, index, i;
1509 struct param_opts popt;
1510 char *path = NULL, *value = NULL;
1512 memset(&popt, 0, sizeof(popt));
1513 index = setparam_cmdline(argc, argv, &popt);
1514 if (index < 0 || index >= argc)
1519 * We can't delete parameters that were
1520 * set with old conf_param interface
1522 return jt_lcfg_setparam_perm(argc, argv, &popt);
1525 return lcfg_setparam_yaml(argv[0], argv[index]);
1527 for (i = index; i < argc; i++) {
1531 value = strchr(path, '=');
1533 /* format: set_param a=b */
1536 if (*value == '\0') {
1538 "error: %s: setting %s: no value\n",
1539 jt_cmdname(argv[0]), path);
1545 /* format: set_param a b */
1549 "error: %s: setting %s: no value\n",
1550 jt_cmdname(argv[0]), path);
1558 rc2 = clean_path(&popt, path);
1560 fprintf(stderr, "error: %s: cleaning %s: %s\n",
1561 jt_cmdname(argv[0]), path, strerror(-rc2));
1567 rc2 = param_display(&popt, path, value, SET_PARAM);