#include <liblustre.h>
#endif
-#include <linux/obd_class.h>
#include <linux/lustre_log.h>
-#include <portals/list.h>
/* Allocate a new log or catalog handle */
struct llog_handle *llog_alloc_handle(void)
}
EXPORT_SYMBOL(llog_alloc_handle);
-
void llog_free_handle(struct llog_handle *loghandle)
{
if (!loghandle)
if (!loghandle->lgh_hdr)
goto out;
- if (loghandle->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN)
+ if (le32_to_cpu(loghandle->lgh_hdr->llh_flags) & LLOG_F_IS_PLAIN)
list_del_init(&loghandle->u.phd.phd_entry);
- if (loghandle->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
+ if (le32_to_cpu(loghandle->lgh_hdr->llh_flags) & LLOG_F_IS_CAT)
LASSERT(list_empty(&loghandle->u.chd.chd_head));
OBD_FREE(loghandle->lgh_hdr, LLOG_CHUNK_SIZE);
RETURN(-EINVAL);
}
- llh->llh_count--;
+ llh->llh_count = cpu_to_le32(le32_to_cpu(llh->llh_count) - 1);
- if ((llh->llh_flags & LLOG_F_ZAP_WHEN_EMPTY) &&
- (llh->llh_count == 1) &&
+ if ((le32_to_cpu(llh->llh_flags) & LLOG_F_ZAP_WHEN_EMPTY) &&
+ (le32_to_cpu(llh->llh_count) == 1) &&
(loghandle->lgh_last_idx == (LLOG_BITMAP_BYTES * 8) - 1)) {
rc = llog_destroy(loghandle);
if (rc)
RETURN(-ENOMEM);
handle->lgh_hdr = llh;
/* first assign flags to use llog_client_ops */
- llh->llh_flags = flags;
+ llh->llh_flags = cpu_to_le32(flags);
rc = llog_read_header(handle);
if (rc == 0) {
- flags = llh->llh_flags;
+ flags = le32_to_cpu(llh->llh_flags);
if (uuid)
LASSERT(obd_uuid_equals(uuid, &llh->llh_tgtuuid));
GOTO(out, rc);
rc = 0;
handle->lgh_last_idx = 0; /* header is record with index 0 */
- llh->llh_count = 1; /* for the header record */
- llh->llh_hdr.lrh_type = LLOG_HDR_MAGIC;
- llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len = LLOG_CHUNK_SIZE;
+ llh->llh_count = cpu_to_le32(1); /* for the header record */
+ llh->llh_hdr.lrh_type = cpu_to_le32(LLOG_HDR_MAGIC);
+ llh->llh_hdr.lrh_len = llh->llh_tail.lrt_len =
+ cpu_to_le32(LLOG_CHUNK_SIZE);
llh->llh_hdr.lrh_index = llh->llh_tail.lrt_index = 0;
- llh->llh_timestamp = LTIME_S(CURRENT_TIME);
+ llh->llh_timestamp = cpu_to_le64(LTIME_S(CURRENT_TIME));
if (uuid)
memcpy(&llh->llh_tgtuuid, uuid, sizeof(llh->llh_tgtuuid));
- llh->llh_bitmap_offset = offsetof(typeof(*llh),llh_bitmap);
+ llh->llh_bitmap_offset = cpu_to_le32(offsetof(typeof(*llh),llh_bitmap));
ext2_set_bit(0, llh->llh_bitmap);
out:
if (flags & LLOG_F_IS_CAT) {
INIT_LIST_HEAD(&handle->u.chd.chd_head);
- llh->llh_size = sizeof(struct llog_logid_rec);
+ llh->llh_size = cpu_to_le32(sizeof(struct llog_logid_rec));
}
else if (flags & LLOG_F_IS_PLAIN)
INIT_LIST_HEAD(&handle->u.phd.phd_entry);
GOTO(out, rc);
rec = buf;
- idx = rec->lrh_index;
+ idx = le32_to_cpu(rec->lrh_index);
if (idx < index)
CDEBUG(D_HA, "index %u : idx %u\n", index, idx);
while (idx < index) {
- rec = (struct llog_rec_hdr *)
- ((char *)rec + rec->lrh_len);
+ rec = ((void *)rec + le32_to_cpu(rec->lrh_len));
idx ++;
}
loghandle->lgh_id.lgl_oid,
loghandle->lgh_id.lgl_ogen);
GOTO(out, rc);
- }
+ } else if (rc == LLOG_DEL_RECORD) {
+ llog_cancel_rec(loghandle, rec->lrh_index);
+ rc = 0;
+ }
if (rc)
GOTO(out, rc);
}
-
/* next record, still in buffer? */
++index;
if (index > last_index)
GOTO(out, rc = 0);
- rec = (struct llog_rec_hdr *)
- ((char *)rec + rec->lrh_len);
+ rec = ((void *)rec + le32_to_cpu(rec->lrh_len));
}
}
RETURN(rc);
}
EXPORT_SYMBOL(llog_process);
+
+int llog_reverse_process(struct llog_handle *loghandle, llog_cb_t cb,
+ void *data, void *catdata)
+{
+ struct llog_log_hdr *llh = loghandle->lgh_hdr;
+ struct llog_process_cat_data *cd = catdata;
+ void *buf;
+ int rc = 0, first_index = 1, index, idx;
+ struct llog_rec_tail *tail;
+ ENTRY;
+
+ OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
+ if (!buf)
+ RETURN(-ENOMEM);
+
+ if (cd != NULL)
+ first_index = cd->first_idx + 1;
+ if (cd != NULL && cd->last_idx)
+ index = cd->last_idx;
+ else
+ index = LLOG_BITMAP_BYTES * 8 - 1;
+
+ while (rc == 0) {
+ struct llog_rec_hdr *rec;
+
+ /* skip records not set in bitmap */
+ while (index >= first_index &&
+ !ext2_test_bit(index, llh->llh_bitmap))
+ --index;
+
+ LASSERT(index >= first_index - 1);
+ if (index == first_index - 1)
+ break;
+
+ /* get the buf with our target record; avoid old garbage */
+ memset(buf, 0, LLOG_CHUNK_SIZE);
+ rc = llog_prev_block(loghandle, index, buf, LLOG_CHUNK_SIZE);
+ if (rc)
+ GOTO(out, rc);
+
+ rec = buf;
+ idx = le32_to_cpu(rec->lrh_index);
+ if (idx < index)
+ CDEBUG(D_HA, "index %u : idx %u\n", index, idx);
+ while (idx < index) {
+ rec = ((void *)rec + le32_to_cpu(rec->lrh_len));
+ idx ++;
+ }
+
+ /* process records in buffer, starting where we found one */
+ while ((void *)rec >= buf) {
+ if (rec->lrh_index == 0)
+ GOTO(out, 0); /* no more records */
+
+ /* if set, process the callback on this record */
+ if (ext2_test_bit(index, llh->llh_bitmap)) {
+ rc = cb(loghandle, rec, data);
+ if (rc == LLOG_PROC_BREAK) {
+ CWARN("recovery from log: "LPX64":%x"
+ " stopped\n",
+ loghandle->lgh_id.lgl_oid,
+ loghandle->lgh_id.lgl_ogen);
+ GOTO(out, rc);
+ }
+ if (rc)
+ GOTO(out, rc);
+ }
+
+ /* previous record, still in buffer? */
+ --index;
+ if (index < first_index)
+ GOTO(out, rc = 0);
+
+ if ((void *)rec == buf)
+ break;
+
+ tail = (void *)rec - sizeof(struct llog_rec_tail);
+ rec = ((void *)rec - le32_to_cpu(tail->lrt_len));
+ }
+ }
+
+ out:
+ if (buf)
+ OBD_FREE(buf, LLOG_CHUNK_SIZE);
+ RETURN(rc);
+}
+EXPORT_SYMBOL(llog_reverse_process);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff