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/
31 * lustre/utils/lustre_cfg.c
33 * Author: Peter J. Braam <braam@clusterfs.com>
34 * Author: Phil Schwan <phil@clusterfs.com>
35 * Author: Andreas Dilger <adilger@clusterfs.com>
36 * Author: Robert Read <rread@clusterfs.com>
45 #include <sys/ioctl.h>
52 #include <libcfs/util/ioctl.h>
53 #include <libcfs/util/string.h>
54 #include <libcfs/util/param.h>
55 #include <libcfs/util/parser.h>
56 #include <lustre/lustreapi.h>
57 #include <linux/lnet/nidstr.h>
58 #include <linux/lnet/lnetctl.h>
59 #include <linux/lustre/lustre_cfg.h>
60 #include <linux/lustre/lustre_ioctl.h>
61 #include <linux/lustre/lustre_ver.h>
73 static char *lcfg_devname;
75 int lcfg_set_devname(char *name)
83 /* quietly strip the unnecessary '$' */
84 if (*name == '$' || *name == '%')
88 while (*ptr != '\0') {
97 /* We can't translate from dev # to name */
100 lcfg_devname = strdup(name);
108 char *lcfg_get_devname(void)
113 int jt_lcfg_device(int argc, char **argv)
115 return jt_obd_device(argc, argv);
118 static int jt_lcfg_ioctl(struct lustre_cfg_bufs *bufs, char *arg, int cmd)
120 struct lustre_cfg *lcfg;
123 lcfg = malloc(lustre_cfg_len(bufs->lcfg_bufcount, bufs->lcfg_buflen));
127 lustre_cfg_init(lcfg, cmd, bufs);
128 rc = lcfg_ioctl(arg, OBD_DEV_ID, lcfg);
132 fprintf(stderr, "error: %s: %s\n", jt_cmdname(arg),
133 strerror(rc = errno));
137 int jt_lcfg_attach(int argc, char **argv)
139 struct lustre_cfg_bufs bufs;
145 lustre_cfg_bufs_reset(&bufs, NULL);
147 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
148 lustre_cfg_bufs_set_string(&bufs, 0, argv[2]);
149 lustre_cfg_bufs_set_string(&bufs, 2, argv[3]);
151 rc = jt_lcfg_ioctl(&bufs, argv[0], LCFG_ATTACH);
153 lcfg_set_devname(argv[2]);
158 int jt_lcfg_setup(int argc, char **argv)
160 struct lustre_cfg_bufs bufs;
165 "%s: please use 'device name' to set the device name for config commands.\n",
166 jt_cmdname(argv[0]));
170 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
175 for (i = 1; i < argc; i++)
176 lustre_cfg_bufs_set_string(&bufs, i, argv[i]);
178 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_SETUP);
181 int jt_obd_detach(int argc, char **argv)
183 struct lustre_cfg_bufs bufs;
187 "%s: please use 'device name' to set the device name for config commands.\n",
188 jt_cmdname(argv[0]));
192 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
197 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DETACH);
200 int jt_obd_cleanup(int argc, char **argv)
202 struct lustre_cfg_bufs bufs;
205 char flags[3] = { 0 };
210 "%s: please use 'device name' to set the device name for config commands.\n",
211 jt_cmdname(argv[0]));
215 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
217 if (argc < 1 || argc > 3)
221 * we are protected from overflowing our buffer by the argc
224 for (n = 1; n < argc; n++) {
225 if (strcmp(argv[n], "force") == 0) {
226 flags[flag_cnt++] = force;
227 } else if (strcmp(argv[n], "failover") == 0) {
228 flags[flag_cnt++] = failover;
230 fprintf(stderr, "unknown option: %s\n", argv[n]);
236 lustre_cfg_bufs_set_string(&bufs, 1, flags);
238 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_CLEANUP);
242 int do_add_uuid(char *func, char *uuid, lnet_nid_t nid)
245 struct lustre_cfg_bufs bufs;
246 struct lustre_cfg *lcfg;
248 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
250 lustre_cfg_bufs_set_string(&bufs, 1, uuid);
252 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
256 lustre_cfg_init(lcfg, LCFG_ADD_UUID, &bufs);
257 lcfg->lcfg_nid = nid;
259 rc = lcfg_ioctl(func, OBD_DEV_ID, lcfg);
263 fprintf(stderr, "IOC_PORTAL_ADD_UUID failed: %s\n",
269 printf("Added uuid %s: %s\n", uuid, libcfs_nid2str(nid));
274 int jt_lcfg_add_uuid(int argc, char **argv)
281 nid = libcfs_str2nid(argv[2]);
282 if (nid == LNET_NID_ANY) {
283 fprintf(stderr, "Can't parse NID %s\n", argv[2]);
287 return do_add_uuid(argv[0], argv[1], nid);
290 int jt_lcfg_del_uuid(int argc, char **argv)
292 struct lustre_cfg_bufs bufs;
295 fprintf(stderr, "usage: %s <uuid>\n", argv[0]);
299 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
300 if (strcmp(argv[1], "_all_"))
301 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
303 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_UUID);
306 int jt_lcfg_del_mount_option(int argc, char **argv)
308 struct lustre_cfg_bufs bufs;
313 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
316 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
318 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_MOUNTOPT);
321 int jt_lcfg_set_timeout(int argc, char **argv)
324 struct lustre_cfg_bufs bufs;
325 struct lustre_cfg *lcfg;
328 "%s has been deprecated. Use conf_param instead.\ne.g. conf_param lustre-MDT0000 obd_timeout=50\n",
329 jt_cmdname(argv[0]));
335 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
337 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
341 lustre_cfg_init(lcfg, LCFG_SET_TIMEOUT, &bufs);
342 lcfg->lcfg_num = atoi(argv[1]);
344 rc = lcfg_ioctl(argv[0], OBD_DEV_ID, lcfg);
348 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
349 strerror(rc = errno));
354 int jt_lcfg_add_conn(int argc, char **argv)
356 struct lustre_cfg_bufs bufs;
357 struct lustre_cfg *lcfg;
370 "%s: please use 'device name' to set the device name for config commands.\n",
371 jt_cmdname(argv[0]));
375 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
377 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
379 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
383 lustre_cfg_init(lcfg, LCFG_ADD_CONN, &bufs);
384 lcfg->lcfg_num = priority;
386 rc = lcfg_ioctl(argv[0], OBD_DEV_ID, lcfg);
390 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
391 strerror(rc = errno));
397 int jt_lcfg_del_conn(int argc, char **argv)
399 struct lustre_cfg_bufs bufs;
406 "%s: please use 'device name' to set the device name for config commands.\n",
407 jt_cmdname(argv[0]));
411 lustre_cfg_bufs_reset(&bufs, lcfg_devname);
413 /* connection uuid */
414 lustre_cfg_bufs_set_string(&bufs, 1, argv[1]);
416 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_DEL_MOUNTOPT);
419 /* Param set locally, directly on target */
420 int jt_lcfg_param(int argc, char **argv)
422 struct lustre_cfg_bufs bufs;
425 if (argc >= LUSTRE_CFG_MAX_BUFCOUNT)
428 lustre_cfg_bufs_reset(&bufs, NULL);
430 for (i = 1; i < argc; i++)
431 lustre_cfg_bufs_set_string(&bufs, i, argv[i]);
433 return jt_lcfg_ioctl(&bufs, argv[0], LCFG_PARAM);
437 unsigned int po_only_path:1;
438 unsigned int po_show_path:1;
439 unsigned int po_show_type:1;
440 unsigned int po_recursive:1;
441 unsigned int po_perm:1;
442 unsigned int po_delete:1;
443 unsigned int po_only_dir:1;
444 unsigned int po_file:1;
447 int lcfg_setparam_perm(char *func, char *buf)
450 struct lustre_cfg_bufs bufs;
451 struct lustre_cfg *lcfg;
453 lustre_cfg_bufs_reset(&bufs, NULL);
455 * This same command would be executed on all nodes, many
456 * of which should fail (silently) because they don't have
457 * that proc file existing locally. There would be no
458 * preprocessing on the MGS to try to figure out which
459 * parameter files to add this to, there would be nodes
460 * processing on the cluster nodes to try to figure out
461 * if they are the intended targets. They will blindly
462 * try to set the parameter, and ENOTFOUND means it wasn't
464 * Target name "general" means call on all targets. It is
465 * left here in case some filtering will be added in
468 lustre_cfg_bufs_set_string(&bufs, 0, "general");
470 lustre_cfg_bufs_set_string(&bufs, 1, buf);
472 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount,
476 fprintf(stderr, "error: allocating lcfg for %s: %s\n",
477 jt_cmdname(func), strerror(rc));
480 lustre_cfg_init(lcfg, LCFG_SET_PARAM, &bufs);
481 rc = lcfg_mgs_ioctl(func, OBD_DEV_ID, lcfg);
483 fprintf(stderr, "error: executing %s: %s\n",
484 jt_cmdname(func), strerror(errno));
492 * Param set to single log file, used by all clients and servers.
493 * This should be loaded after the individual config logs.
494 * Called from set param with -P option.
496 static int jt_lcfg_setparam_perm(int argc, char **argv,
497 struct param_opts *popt)
505 first_param = optind;
506 if (first_param < 0 || first_param >= argc)
509 for (i = first_param, rc = 0; i < argc; i++) {
510 len = strlen(argv[i]);
514 /* put an '=' on the end in case it doesn't have one */
515 if (popt->po_delete && argv[i][len - 1] != '=') {
516 buf = malloc(len + 1);
521 sprintf(buf, "%s=", argv[i]);
524 rc = lcfg_setparam_perm(argv[0], buf);
533 int lcfg_conf_param(char *func, char *buf)
536 struct lustre_cfg_bufs bufs;
537 struct lustre_cfg *lcfg;
539 lustre_cfg_bufs_reset(&bufs, NULL);
540 lustre_cfg_bufs_set_string(&bufs, 1, buf);
542 /* We could put other opcodes here. */
543 lcfg = malloc(lustre_cfg_len(bufs.lcfg_bufcount, bufs.lcfg_buflen));
547 lustre_cfg_init(lcfg, LCFG_PARAM, &bufs);
548 rc = lcfg_mgs_ioctl(func, OBD_DEV_ID, lcfg);
558 * Param set in config log on MGS
559 * conf_param key=value
561 * Note we can actually send mgc conf_params from clients, but currently
562 * that's only done for default file striping (see ll_send_mgc_param),
565 * After removal of a parameter (-d) Lustre will use the default
566 * AT NEXT REBOOT, not immediately.
568 int jt_lcfg_confparam(int argc, char **argv)
574 /* mgs_setparam processes only lctl buf #1 */
575 if ((argc > 3) || (argc <= 1))
578 while ((rc = getopt(argc, argv, "d")) != -1) {
593 /* for delete, make it "<param>=\0" */
594 buf = malloc(strlen(argv[optind]) + 2);
599 /* put an '=' on the end in case it doesn't have one */
600 sprintf(buf, "%s=", argv[optind]);
601 /* then truncate after the first '=' */
602 ptr = strchr(buf, '=');
606 rc = lcfg_conf_param(argv[0], buf);
608 if (buf != argv[optind])
612 fprintf(stderr, "error: %s: %s\n", jt_cmdname(argv[0]),
620 * Display a parameter path in the same format as sysctl.
621 * E.g. obdfilter.lustre-OST0000.stats
623 * \param[in] filename file name of the parameter
624 * \param[in] st parameter file stats
625 * \param[in] popt set/get param options
627 * \retval allocated pointer containing modified filename
630 display_name(const char *filename, struct stat *st, struct param_opts *popt)
632 size_t suffix_len = 0;
637 if (popt->po_show_type) {
638 if (S_ISDIR(st->st_mode))
640 else if (S_ISLNK(st->st_mode))
642 else if (st->st_mode & S_IWUSR)
646 /* Take the original filename string and chop off the glob addition */
647 tmp = strstr(filename, "/lustre/");
649 tmp = strstr(filename, "/lnet/");
651 tmp += strlen("/lnet/");
653 tmp += strlen("/lustre/");
656 /* Allocate return string */
657 param_name = strdup(tmp);
661 /* replace '/' with '.' to match conf_param and sysctl */
662 for (tmp = strchr(param_name, '/'); tmp != NULL; tmp = strchr(tmp, '/'))
665 /* Append the indicator to entries if needed. */
666 if (popt->po_show_type && suffix != NULL) {
667 suffix_len = strlen(suffix);
669 tmp = realloc(param_name, suffix_len + strlen(param_name) + 1);
672 strncat(param_name, suffix,
673 strlen(param_name) + suffix_len);
680 /* Find a character in a length limited string */
681 /* BEWARE - kernel definition of strnchr has args in different order! */
682 static char *strnchr(const char *p, char c, size_t n)
696 * Turns a lctl parameter string into a procfs/sysfs subdirectory path pattern.
698 * \param[in] popt Used to control parameter usage. For this
699 * function it is used to see if the path has
701 * \param[in,out] path lctl parameter string that is turned into
702 * the subdirectory path pattern that is used
703 * to search the procfs/sysfs tree.
705 * \retval -errno on error.
708 clean_path(struct param_opts *popt, char *path)
713 if (popt == NULL || path == NULL || strlen(path) == 0)
716 /* If path contains a suffix we need to remove it */
717 if (popt->po_show_type) {
718 size_t path_end = strlen(path) - 1;
720 tmp = path + path_end;
731 /* get rid of '\', glob doesn't like it */
732 tmp = strrchr(path, '\\');
734 char *tail = path + strlen(path);
736 while (tmp != path) {
738 memmove(tmp, tmp + 1, tail - tmp);
745 /* Does this path contain a NID string ? */
746 tmp = strchr(path, '@');
748 char *find_nid = strdup(path);
755 * First we need to chop off rest after nid string.
756 * Since find_nid is a clone of path it better have '@'
758 tmp = strchr(find_nid, '@');
759 tmp = strchr(tmp, '.');
763 /* Now chop off the front. */
764 for (tmp = strchr(find_nid, '.'); tmp != NULL;
765 tmp = strchr(tmp, '.')) {
766 /* Remove MGC to make it NID format */
767 if (!strncmp(++tmp, "MGC", 3))
770 nid = libcfs_str2nid(tmp);
771 if (nid != LNET_NID_ANY) {
772 nidstr = libcfs_nid2str(nid);
781 /* replace param '.' with '/' */
782 for (tmp = strchr(path, '.'); tmp != NULL; tmp = strchr(tmp, '.')) {
785 /* Remove MGC to make it NID format */
786 if (!strncmp(tmp, "MGC", 3))
790 * There exist cases where some of the subdirectories of the
791 * the parameter tree has embedded in its name a NID string.
792 * This means that it is possible that these subdirectories
793 * could have actual '.' in its name. If this is the case we
794 * don't want to blindly replace the '.' with '/'.
797 char *match = strstr(tmp, nidstr);
800 tmp += strlen(nidstr);
808 * The application lctl can perform three operations for lustre
809 * tunables. This enum defines those three operations which are
811 * 1) LIST_PARAM - list available tunables
812 * 2) GET_PARAM - report the current setting of a tunable
813 * 3) SET_PARAM - set the tunable to a new value
815 enum parameter_operation {
821 char *parameter_opname[] = {
822 [LIST_PARAM] = "list_param",
823 [GET_PARAM] = "get_param",
824 [SET_PARAM] = "set_param",
828 * Read the value of parameter
830 * \param[in] path full path to the parameter
831 * \param[in] param_name lctl parameter format of the
833 * \param[in] popt set/get param options
835 * \retval 0 on success.
836 * \retval -errno on error.
839 read_param(const char *path, const char *param_name, struct param_opts *popt)
845 rc = llapi_param_get_value(path, &buf, &buflen);
848 "error: read_param: \'%s\': %s\n",
849 path, strerror(-rc));
852 /* don't print anything for empty files */
856 if (popt->po_show_path) {
859 longbuf = strnchr(buf, buflen - 1, '\n') != NULL ||
860 buflen + strlen(param_name) >= 80;
861 printf("%s=%s", param_name, longbuf ? "\n" : "");
871 * Set a parameter to a specified value
873 * \param[in] path full path to the parameter
874 * \param[in] param_name lctl parameter format of the parameter path
875 * \param[in] popt set/get param options
876 * \param[in] value value to set the parameter to
878 * \retval number of bytes written on success.
879 * \retval -errno on error.
882 write_param(const char *path, const char *param_name, struct param_opts *popt,
891 /* Write the new value to the file */
892 fd = open(path, O_WRONLY);
895 fprintf(stderr, "error: set_param: opening '%s': %s\n",
896 path, strerror(errno));
900 count = write(fd, value, strlen(value));
904 fprintf(stderr, "error: set_param: setting %s=%s: %s\n",
905 path, value, strerror(errno));
907 } else if (count < strlen(value)) { /* Truncate case */
910 "error: set_param: setting %s=%s: wrote only %zd\n",
912 } else if (popt->po_show_path) {
913 printf("%s=%s\n", param_name, value);
921 * Perform a read, write or just a listing of a parameter
923 * \param[in] popt list,set,get parameter options
924 * \param[in] pattern search filter for the path of the parameter
925 * \param[in] value value to set the parameter if write operation
926 * \param[in] mode what operation to perform with the parameter
928 * \retval number of bytes written on success.
929 * \retval -errno on error and prints error message.
932 param_display(struct param_opts *popt, char *pattern, char *value,
933 enum parameter_operation mode)
938 char *opname = parameter_opname[mode];
941 rc = llapi_param_get_paths(pattern, &paths);
944 if (!popt->po_recursive) {
945 fprintf(stderr, "error: %s: param_path '%s': %s\n",
946 opname, pattern, strerror(errno));
951 dup_cache = calloc(paths.gl_pathc, sizeof(char *));
955 "error: %s: allocating '%s' dup_cache[%zd]: %s\n",
956 opname, pattern, paths.gl_pathc, strerror(-rc));
960 for (i = 0; i < paths.gl_pathc; i++) {
961 char *param_name = NULL, *tmp;
962 char pathname[PATH_MAX], param_dir[PATH_MAX + 2];
966 if (stat(paths.gl_pathv[i], &st) == -1) {
967 fprintf(stderr, "error: %s: stat '%s': %s\n",
968 opname, paths.gl_pathv[i], strerror(errno));
974 if (popt->po_only_dir && !S_ISDIR(st.st_mode))
977 param_name = display_name(paths.gl_pathv[i], &st, popt);
980 "error: %s: generating name for '%s': %s\n",
981 opname, paths.gl_pathv[i], strerror(ENOMEM));
989 /* Read the contents of file to stdout */
990 if (S_ISREG(st.st_mode)) {
991 rc2 = read_param(paths.gl_pathv[i], param_name,
993 if (rc2 < 0 && rc == 0)
998 if (S_ISREG(st.st_mode)) {
999 rc2 = write_param(paths.gl_pathv[i],
1000 param_name, popt, value);
1001 if (rc2 < 0 && rc == 0)
1007 * For the upstream client the parameter files locations
1008 * are split between under both /sys/kernel/debug/lustre
1009 * and /sys/fs/lustre. The parameter files containing
1010 * small amounts of data, less than a page in size, are
1011 * located under /sys/fs/lustre and in the case of large
1012 * parameter data files, think stats for example, are
1013 * located in the debugfs tree. Since the files are
1014 * split across two trees the directories are often
1015 * duplicated which means these directories are listed
1016 * twice which leads to duplicate output to the user.
1017 * To avoid scanning a directory twice we have to cache
1018 * any directory and check if a search has been
1021 for (j = 0; j < dup_count; j++) {
1022 if (!strcmp(dup_cache[j], param_name))
1025 if (j != dup_count) {
1030 dup_cache[dup_count++] = strdup(param_name);
1032 if (popt->po_show_path)
1033 printf("%s\n", param_name);
1038 * Only directories are searched recursively if
1039 * requested by the user
1041 if (!S_ISDIR(st.st_mode) || !popt->po_recursive) {
1047 /* Turn param_name into file path format */
1048 rc2 = clean_path(popt, param_name);
1050 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1051 opname, param_name, strerror(-rc2));
1059 /* Use param_name to grab subdirectory tree from full path */
1060 snprintf(param_dir, sizeof(param_dir), "/%s", param_name);
1061 tmp = strstr(paths.gl_pathv[i], param_dir);
1063 /* cleanup paramname now that we are done with it */
1066 memset(¶m_dir, '\0', sizeof(param_dir));
1068 /* Shouldn't happen but just in case */
1076 rc2 = snprintf(pathname, sizeof(pathname), "%s/*", tmp);
1079 * snprintf() should never an error, and if it does
1080 * there isn't much point trying to use fprintf()
1084 if (rc2 >= sizeof(pathname)) {
1085 fprintf(stderr, "error: %s: overflow processing '%s'\n",
1092 rc2 = param_display(popt, pathname, value, mode);
1093 if (rc2 != 0 && rc2 != -ENOENT) {
1094 /* errors will be printed by param_display() */
1101 for (i = 0; i < dup_count; i++)
1105 llapi_param_paths_free(&paths);
1109 static int listparam_cmdline(int argc, char **argv, struct param_opts *popt)
1113 popt->po_show_path = 1;
1114 popt->po_only_path = 1;
1116 while ((ch = getopt(argc, argv, "FRD")) != -1) {
1119 popt->po_show_type = 1;
1122 popt->po_recursive = 1;
1125 popt->po_only_dir = 1;
1135 int jt_lcfg_listparam(int argc, char **argv)
1137 int rc = 0, index, i;
1138 struct param_opts popt;
1141 memset(&popt, 0, sizeof(popt));
1142 index = listparam_cmdline(argc, argv, &popt);
1143 if (index < 0 || index >= argc)
1146 for (i = index; i < argc; i++) {
1151 rc2 = clean_path(&popt, path);
1153 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1154 jt_cmdname(argv[0]), path, strerror(-rc2));
1160 rc2 = param_display(&popt, path, NULL, LIST_PARAM);
1162 fprintf(stderr, "error: %s: listing '%s': %s\n",
1163 jt_cmdname(argv[0]), path, strerror(-rc2));
1173 static int getparam_cmdline(int argc, char **argv, struct param_opts *popt)
1177 popt->po_show_path = 1;
1179 while ((ch = getopt(argc, argv, "FnNR")) != -1) {
1182 popt->po_show_type = 1;
1185 popt->po_show_path = 0;
1188 popt->po_only_path = 1;
1191 popt->po_recursive = 1;
1201 int jt_lcfg_getparam(int argc, char **argv)
1203 int rc = 0, index, i;
1204 struct param_opts popt;
1207 memset(&popt, 0, sizeof(popt));
1208 index = getparam_cmdline(argc, argv, &popt);
1209 if (index < 0 || index >= argc)
1212 for (i = index; i < argc; i++) {
1217 rc2 = clean_path(&popt, path);
1219 fprintf(stderr, "error: %s: cleaning '%s': %s\n",
1220 jt_cmdname(argv[0]), path, strerror(-rc2));
1226 rc2 = param_display(&popt, path, NULL,
1227 popt.po_only_path ? LIST_PARAM : GET_PARAM);
1238 #ifdef HAVE_SERVER_SUPPORT
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",
1284 static int setparam_cmdline(int argc, char **argv, struct param_opts *popt)
1288 popt->po_show_path = 1;
1289 popt->po_only_path = 0;
1290 popt->po_show_type = 0;
1291 popt->po_recursive = 0;
1293 popt->po_delete = 0;
1296 while ((ch = getopt(argc, argv, "nPdF")) != -1) {
1299 popt->po_show_path = 0;
1305 popt->po_delete = 1;
1324 #define PS_PARAM_FOUND 1
1325 #define PS_PARAM_SET 2
1326 #define PS_VAL_FOUND 4
1327 #define PS_VAL_SET 8
1328 #define PS_DEVICE_FOUND 16
1329 #define PS_DEVICE_SET 32
1331 #define PARAM_SZ 256
1333 static struct cfg_type_data {
1334 enum paramtype ptype;
1336 } cfg_type_table[] = {
1337 { PT_SETPARAM, "set_param" },
1338 { PT_CONFPARAM, "conf_param" },
1342 static struct cfg_stage_data {
1345 } cfg_stage_table[] = {
1346 { PS_PARAM_FOUND, "parameter" },
1347 { PS_VAL_FOUND, "value" },
1348 { PS_DEVICE_FOUND, "device" },
1352 void conf_to_set_param(enum paramtype confset, const char *param,
1353 const char *device, char *buf,
1358 if (confset == PT_SETPARAM) {
1359 strncpy(buf, param, bufsize);
1364 * sys.* params are top level, we just need to trim the sys.
1366 tmp = strstr(param, "sys.");
1369 strncpy(buf, tmp, bufsize);
1374 * parameters look like type.parameter, we need to stick the device
1375 * in the middle. Example combine mdt.identity_upcall with device
1376 * lustre-MDT0000 for mdt.lustre-MDT0000.identity_upcall
1379 tmp = strchrnul(param, '.');
1380 snprintf(buf, tmp - param + 1, "%s", param);
1382 bufsize -= tmp - param;
1383 snprintf(buf, bufsize, ".%s%s", device, tmp);
1386 int lcfg_setparam_yaml(char *func, char *filename)
1389 yaml_parser_t parser;
1393 enum paramtype confset = PT_NONE;
1394 int param = PS_NONE;
1396 char parameter[PARAM_SZ + 1];
1397 char value[PARAM_SZ + 1];
1398 char device[PARAM_SZ + 1];
1400 file = fopen(filename, "rb");
1401 yaml_parser_initialize(&parser);
1402 yaml_parser_set_input_file(&parser, file);
1405 * Search tokens for conf_param or set_param
1406 * The token after "parameter" goes into parameter
1407 * The token after "value" goes into value
1408 * when we have all 3, create param=val and call the
1409 * appropriate function for set/conf param
1411 while (token.type != YAML_STREAM_END_TOKEN && rc == 0) {
1414 yaml_token_delete(&token);
1415 if (!yaml_parser_scan(&parser, &token)) {
1420 if (token.type != YAML_SCALAR_TOKEN)
1423 for (i = 0; cfg_type_table[i].ptype != PT_NONE; i++) {
1424 if (!strncmp((char *)token.data.alias.value,
1425 cfg_type_table[i].type_name,
1426 strlen(cfg_type_table[i].type_name))) {
1427 confset = cfg_type_table[i].ptype;
1432 if (confset == PT_NONE)
1435 for (i = 0; cfg_stage_table[i].pstage != PS_NONE; i++) {
1436 if (!strncmp((char *)token.data.alias.value,
1437 cfg_stage_table[i].stage_name,
1438 strlen(cfg_stage_table[i].stage_name))) {
1439 param |= cfg_stage_table[i].pstage;
1444 if (cfg_stage_table[i].pstage != PS_NONE)
1447 if (param & PS_PARAM_FOUND) {
1448 conf_to_set_param(confset,
1449 (char *)token.data.alias.value,
1450 device, parameter, PARAM_SZ);
1451 param |= PS_PARAM_SET;
1452 param &= ~PS_PARAM_FOUND;
1455 * we're getting parameter: param=val
1456 * copy val and mark that we've got it in case
1457 * there is no value: tag
1459 tmp = strchrnul(parameter, '=');
1461 strncpy(value, tmp + 1, sizeof(value) - 1);
1463 param |= PS_VAL_SET;
1467 } else if (param & PS_VAL_FOUND) {
1468 strncpy(value, (char *)token.data.alias.value,
1470 param |= PS_VAL_SET;
1471 param &= ~PS_VAL_FOUND;
1472 } else if (param & PS_DEVICE_FOUND) {
1473 strncpy(device, (char *)token.data.alias.value,
1475 param |= PS_DEVICE_SET;
1476 param &= ~PS_DEVICE_FOUND;
1479 if (confset && param & PS_VAL_SET && param & PS_PARAM_SET) {
1480 int size = strlen(parameter) + strlen(value) + 2;
1481 char *buf = malloc(size);
1487 snprintf(buf, size, "%s=%s", parameter, value);
1489 printf("set_param: %s\n", buf);
1490 rc = lcfg_setparam_perm(func, buf);
1494 parameter[0] = '\0';
1501 yaml_parser_delete(&parser);
1507 int jt_lcfg_setparam(int argc, char **argv)
1509 int rc = 0, index, i;
1510 struct param_opts popt;
1511 char *path = NULL, *value = NULL;
1513 memset(&popt, 0, sizeof(popt));
1514 index = setparam_cmdline(argc, argv, &popt);
1515 if (index < 0 || index >= argc)
1520 * We can't delete parameters that were
1521 * set with old conf_param interface
1523 return jt_lcfg_setparam_perm(argc, argv, &popt);
1526 return lcfg_setparam_yaml(argv[0], argv[index]);
1528 for (i = index; i < argc; i++) {
1532 value = strchr(path, '=');
1534 /* format: set_param a=b */
1537 if (*value == '\0') {
1539 "error: %s: setting %s: no value\n",
1540 jt_cmdname(argv[0]), path);
1546 /* format: set_param a b */
1550 "error: %s: setting %s: no value\n",
1551 jt_cmdname(argv[0]), path);
1559 rc2 = clean_path(&popt, path);
1561 fprintf(stderr, "error: %s: cleaning %s: %s\n",
1562 jt_cmdname(argv[0]), path, strerror(-rc2));
1568 rc2 = param_display(&popt, path, value, SET_PARAM);