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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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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.
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33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_LOG
39 #include <obd_class.h>
40 #include <lustre_log.h>
41 #include "llog_internal.h"
43 static int str2logid(struct llog_logid *logid, char *str, int len)
45 char *start, *end, *endp;
53 if (start - str >= len - 1)
55 end = strchr(start, '#');
56 if (end == NULL || end == start)
60 logid->lgl_oid = simple_strtoull(start, &endp, 0);
65 if (start - str >= len - 1)
67 end = strchr(start, '#');
68 if (end == NULL || end == start)
72 logid->lgl_oseq = simple_strtoull(start, &endp, 0);
77 if (start - str >= len - 1)
79 logid->lgl_ogen = simple_strtoul(start, &endp, 16);
86 static int llog_check_cb(const struct lu_env *env, struct llog_handle *handle,
87 struct llog_rec_hdr *rec, void *data)
89 struct obd_ioctl_data *ioc_data = (struct obd_ioctl_data *)data;
90 static int l, remains, from, to;
93 int cur_index, rc = 0;
97 if (ioc_data && ioc_data->ioc_inllen1 > 0) {
99 remains = ioc_data->ioc_inllen4 +
100 cfs_size_round(ioc_data->ioc_inllen1) +
101 cfs_size_round(ioc_data->ioc_inllen2) +
102 cfs_size_round(ioc_data->ioc_inllen3);
103 from = simple_strtol(ioc_data->ioc_inlbuf2, &endp, 0);
106 to = simple_strtol(ioc_data->ioc_inlbuf3, &endp, 0);
109 ioc_data->ioc_inllen1 = 0;
110 out = ioc_data->ioc_bulk;
113 cur_index = rec->lrh_index;
114 if (cur_index < from)
116 if (to > 0 && cur_index > to)
117 RETURN(-LLOG_EEMPTY);
119 if (handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) {
120 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
121 struct llog_handle *log_handle;
123 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
124 l = snprintf(out, remains, "[index]: %05d [type]: "
125 "%02x [len]: %04d failed\n",
126 cur_index, rec->lrh_type,
129 if (handle->lgh_ctxt == NULL)
131 rc = llog_cat_id2handle(env, handle, &log_handle, &lir->lid_id);
134 "cannot find log #"LPX64"#"LPX64"#%08x\n",
135 lir->lid_id.lgl_oid, lir->lid_id.lgl_oseq,
136 lir->lid_id.lgl_ogen);
139 rc = llog_process(env, log_handle, llog_check_cb, NULL, NULL);
140 llog_close(env, log_handle);
144 switch (rec->lrh_type) {
147 case MDS_UNLINK64_REC:
148 case MDS_SETATTR64_REC:
158 l = snprintf(out, remains, "[index]: %05d [type]: "
159 "%02x [len]: %04d %s\n",
160 cur_index, rec->lrh_type, rec->lrh_len,
161 ok ? "ok" : "failed");
165 CERROR("%s: no space to print log records\n",
166 handle->lgh_ctxt->loc_obd->obd_name);
167 RETURN(-LLOG_EEMPTY);
173 static int llog_print_cb(const struct lu_env *env, struct llog_handle *handle,
174 struct llog_rec_hdr *rec, void *data)
176 struct obd_ioctl_data *ioc_data = (struct obd_ioctl_data *)data;
177 static int l, remains, from, to;
183 if (ioc_data != NULL && ioc_data->ioc_inllen1 > 0) {
185 remains = ioc_data->ioc_inllen4 +
186 cfs_size_round(ioc_data->ioc_inllen1) +
187 cfs_size_round(ioc_data->ioc_inllen2) +
188 cfs_size_round(ioc_data->ioc_inllen3);
189 from = simple_strtol(ioc_data->ioc_inlbuf2, &endp, 0);
192 to = simple_strtol(ioc_data->ioc_inlbuf3, &endp, 0);
195 out = ioc_data->ioc_bulk;
196 ioc_data->ioc_inllen1 = 0;
199 cur_index = rec->lrh_index;
200 if (cur_index < from)
202 if (to > 0 && cur_index > to)
203 RETURN(-LLOG_EEMPTY);
205 if (handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT) {
206 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
208 if (rec->lrh_type != LLOG_LOGID_MAGIC) {
209 CERROR("invalid record in catalog\n");
213 l = snprintf(out, remains,
214 "[index]: %05d [logid]: #"LPX64"#"LPX64"#%08x\n",
215 cur_index, lir->lid_id.lgl_oid,
216 lir->lid_id.lgl_oseq, lir->lid_id.lgl_ogen);
217 } else if (rec->lrh_type == OBD_CFG_REC) {
220 rc = class_config_parse_rec(rec, out, remains);
225 l = snprintf(out, remains,
226 "[index]: %05d [type]: %02x [len]: %04d\n",
227 cur_index, rec->lrh_type, rec->lrh_len);
232 CERROR("not enough space for print log records\n");
233 RETURN(-LLOG_EEMPTY);
238 static int llog_remove_log(const struct lu_env *env, struct llog_handle *cat,
239 struct llog_logid *logid)
241 struct llog_handle *log;
246 rc = llog_cat_id2handle(env, cat, &log, logid);
248 CDEBUG(D_IOCTL, "cannot find log #"LPX64"#"LPX64"#%08x\n",
249 logid->lgl_oid, logid->lgl_oseq, logid->lgl_ogen);
250 GOTO(out, rc = -ENOENT);
253 index = log->u.phd.phd_cookie.lgc_index;
255 rc = llog_destroy(env, log);
257 CDEBUG(D_IOCTL, "cannot destroy log\n");
260 down_write(&cat->lgh_lock);
261 if (cat->u.chd.chd_current_log == log)
262 cat->u.chd.chd_current_log = NULL;
263 up_write(&cat->lgh_lock);
264 llog_cat_set_first_idx(cat, index);
265 rc = llog_cancel_rec(env, cat, index);
267 llog_close(env, log);
272 static int llog_delete_cb(const struct lu_env *env, struct llog_handle *handle,
273 struct llog_rec_hdr *rec, void *data)
275 struct llog_logid_rec *lir = (struct llog_logid_rec *)rec;
279 if (rec->lrh_type != LLOG_LOGID_MAGIC)
281 rc = llog_remove_log(env, handle, &lir->lid_id);
287 int llog_ioctl(const struct lu_env *env, struct llog_ctxt *ctxt, int cmd,
288 struct obd_ioctl_data *data)
290 struct llog_logid logid;
292 struct llog_handle *handle = NULL;
296 if (*data->ioc_inlbuf1 == '#') {
297 rc = str2logid(&logid, data->ioc_inlbuf1, data->ioc_inllen1);
300 rc = llog_open(env, ctxt, &handle, &logid, NULL,
304 } else if (*data->ioc_inlbuf1 == '$') {
305 char *name = data->ioc_inlbuf1 + 1;
307 rc = llog_open(env, ctxt, &handle, NULL, name,
315 rc = llog_init_handle(env, handle, 0, NULL);
317 GOTO(out_close, rc = -ENOENT);
320 case OBD_IOC_LLOG_INFO: {
322 int remains = data->ioc_inllen2 +
323 cfs_size_round(data->ioc_inllen1);
324 char *out = data->ioc_bulk;
326 l = snprintf(out, remains,
327 "logid: #"LPX64"#"LPX64"#%08x\n"
329 "records count: %d\n"
331 handle->lgh_id.lgl_oid, handle->lgh_id.lgl_oseq,
332 handle->lgh_id.lgl_ogen,
333 handle->lgh_hdr->llh_flags,
334 handle->lgh_hdr->llh_flags &
335 LLOG_F_IS_CAT ? "cat" : "plain",
336 handle->lgh_hdr->llh_count,
337 handle->lgh_last_idx);
341 CERROR("%s: not enough space for log header info\n",
342 ctxt->loc_obd->obd_name);
347 case OBD_IOC_LLOG_CHECK:
348 LASSERT(data->ioc_inllen1 > 0);
349 rc = llog_process(env, handle, llog_check_cb, data, NULL);
350 if (rc == -LLOG_EEMPTY)
355 case OBD_IOC_LLOG_PRINT:
356 LASSERT(data->ioc_inllen1 > 0);
357 rc = llog_process(env, handle, llog_print_cb, data, NULL);
358 if (rc == -LLOG_EEMPTY)
363 case OBD_IOC_LLOG_CANCEL: {
364 struct llog_cookie cookie;
365 struct llog_logid plain;
368 cookie.lgc_index = simple_strtoul(data->ioc_inlbuf3, &endp, 0);
370 GOTO(out_close, rc = -EINVAL);
372 if (handle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) {
373 rc = llog_cancel_rec(NULL, handle, cookie.lgc_index);
375 } else if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
376 GOTO(out_close, rc = -EINVAL);
379 if (data->ioc_inlbuf2 == NULL) /* catalog but no logid */
380 GOTO(out_close, rc = -ENOTTY);
382 rc = str2logid(&plain, data->ioc_inlbuf2, data->ioc_inllen2);
385 cookie.lgc_lgl = plain;
386 rc = llog_cat_cancel_records(env, handle, 1, &cookie);
391 case OBD_IOC_LLOG_REMOVE: {
392 struct llog_logid plain;
394 if (handle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN) {
395 rc = llog_destroy(env, handle);
397 } else if (!(handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)) {
398 GOTO(out_close, rc = -EINVAL);
401 if (data->ioc_inlbuf2 > 0) {
402 /* remove indicate log from the catalog */
403 rc = str2logid(&plain, data->ioc_inlbuf2,
407 rc = llog_remove_log(env, handle, &plain);
409 /* remove all the log of the catalog */
410 rc = llog_process(env, handle, llog_delete_cb, NULL,
418 CERROR("%s: Unknown ioctl cmd %#x\n",
419 ctxt->loc_obd->obd_name, cmd);
420 GOTO(out_close, rc = -ENOTTY);
424 if (handle->lgh_hdr &&
425 handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
426 llog_cat_close(env, handle);
428 llog_close(env, handle);
431 EXPORT_SYMBOL(llog_ioctl);
433 #ifdef HAVE_LDISKFS_OSD
434 int llog_catalog_list(struct obd_device *obd, int count,
435 struct obd_ioctl_data *data)
438 struct llog_catid *idarray;
439 struct llog_logid *id;
440 char name[32] = CATLIST;
442 int l, remains, rc = 0;
445 size = sizeof(*idarray) * count;
447 OBD_ALLOC_LARGE(idarray, size);
451 mutex_lock(&obd->obd_olg.olg_cat_processing);
452 rc = llog_get_cat_list(obd, name, 0, count, idarray);
456 out = data->ioc_bulk;
457 remains = data->ioc_inllen1;
458 for (i = 0; i < count; i++) {
459 id = &idarray[i].lci_logid;
460 l = snprintf(out, remains,
461 "catalog log: #"LPX64"#"LPX64"#%08x\n",
462 id->lgl_oid, id->lgl_oseq, id->lgl_ogen);
466 CWARN("not enough memory for catlog list\n");
471 /* release semaphore */
472 mutex_unlock(&obd->obd_olg.olg_cat_processing);
474 OBD_FREE_LARGE(idarray, size);
478 EXPORT_SYMBOL(llog_catalog_list);