diff options
Diffstat (limited to 'db2/log/log_register.c')
| -rw-r--r-- | db2/log/log_register.c | 208 |
1 files changed, 0 insertions, 208 deletions
diff --git a/db2/log/log_register.c b/db2/log/log_register.c deleted file mode 100644 index 22264e3291..0000000000 --- a/db2/log/log_register.c +++ /dev/null @@ -1,208 +0,0 @@ -/*- - * See the file LICENSE for redistribution information. - * - * Copyright (c) 1996, 1997, 1998 - * Sleepycat Software. All rights reserved. - */ -#include "config.h" - -#ifndef lint -static const char sccsid[] = "@(#)log_register.c 10.22 (Sleepycat) 9/27/98"; -#endif /* not lint */ - -#ifndef NO_SYSTEM_INCLUDES -#include <sys/types.h> - -#include <errno.h> -#include <string.h> -#endif - -#include "db_int.h" -#include "shqueue.h" -#include "log.h" -#include "common_ext.h" - -/* - * log_register -- - * Register a file name. - */ -int -log_register(dblp, dbp, name, type, idp) - DB_LOG *dblp; - DB *dbp; - const char *name; - DBTYPE type; - u_int32_t *idp; -{ - DBT fid_dbt, r_name; - DB_LSN r_unused; - FNAME *fnp, *reuse_fnp; - size_t len; - u_int32_t maxid; - int inserted, ret; - char *fullname; - void *namep; - - inserted = 0; - fullname = NULL; - fnp = namep = reuse_fnp = NULL; - - LOG_PANIC_CHECK(dblp); - - /* Check the arguments. */ - if (type != DB_BTREE && type != DB_HASH && type != DB_RECNO) { - __db_err(dblp->dbenv, "log_register: unknown DB file type"); - return (EINVAL); - } - - /* Get the log file id. */ - if ((ret = __db_appname(dblp->dbenv, - DB_APP_DATA, NULL, name, 0, NULL, &fullname)) != 0) - return (ret); - - LOCK_LOGREGION(dblp); - - /* - * See if we've already got this file in the log, finding the - * (maximum+1) in-use file id and some available file id (if we - * find an available fid, we'll use it, else we'll have to allocate - * one after the maximum that we found). - */ - for (maxid = 0, fnp = SH_TAILQ_FIRST(&dblp->lp->fq, __fname); - fnp != NULL; fnp = SH_TAILQ_NEXT(fnp, q, __fname)) { - if (fnp->ref == 0) { /* Entry is not in use. */ - if (reuse_fnp == NULL) - reuse_fnp = fnp; - continue; - } - if (!memcmp(dbp->fileid, fnp->ufid, DB_FILE_ID_LEN)) { - ++fnp->ref; - goto found; - } - if (maxid <= fnp->id) - maxid = fnp->id + 1; - } - - /* Fill in fnp structure. */ - - if (reuse_fnp != NULL) /* Reuse existing one. */ - fnp = reuse_fnp; - else if ((ret = __db_shalloc(dblp->addr, sizeof(FNAME), 0, &fnp)) != 0) - goto err; - else /* Allocate a new one. */ - fnp->id = maxid; - - fnp->ref = 1; - fnp->s_type = type; - memcpy(fnp->ufid, dbp->fileid, DB_FILE_ID_LEN); - - len = strlen(name) + 1; - if ((ret = __db_shalloc(dblp->addr, len, 0, &namep)) != 0) - goto err; - fnp->name_off = R_OFFSET(dblp, namep); - memcpy(namep, name, len); - - /* Only do the insert if we allocated a new fnp. */ - if (reuse_fnp == NULL) - SH_TAILQ_INSERT_HEAD(&dblp->lp->fq, fnp, q, __fname); - inserted = 1; - -found: /* Log the registry. */ - if (!F_ISSET(dblp, DBC_RECOVER)) { - r_name.data = (void *)name; /* XXX: Yuck! */ - r_name.size = strlen(name) + 1; - memset(&fid_dbt, 0, sizeof(fid_dbt)); - fid_dbt.data = dbp->fileid; - fid_dbt.size = DB_FILE_ID_LEN; - if ((ret = __log_register_log(dblp, NULL, &r_unused, - 0, LOG_OPEN, &r_name, &fid_dbt, fnp->id, type)) != 0) - goto err; - if ((ret = __log_add_logid(dblp, dbp, fnp->id)) != 0) - goto err; - } - - if (0) { -err: /* - * XXX - * We should grow the region. - */ - if (inserted) - SH_TAILQ_REMOVE(&dblp->lp->fq, fnp, q, __fname); - if (namep != NULL) - __db_shalloc_free(dblp->addr, namep); - if (fnp != NULL) - __db_shalloc_free(dblp->addr, fnp); - } - - if (idp != NULL) - *idp = fnp->id; - UNLOCK_LOGREGION(dblp); - - if (fullname != NULL) - __os_freestr(fullname); - - return (ret); -} - -/* - * log_unregister -- - * Discard a registered file name. - */ -int -log_unregister(dblp, fid) - DB_LOG *dblp; - u_int32_t fid; -{ - DBT fid_dbt, r_name; - DB_LSN r_unused; - FNAME *fnp; - int ret; - - LOG_PANIC_CHECK(dblp); - - ret = 0; - LOCK_LOGREGION(dblp); - - /* Find the entry in the log. */ - for (fnp = SH_TAILQ_FIRST(&dblp->lp->fq, __fname); - fnp != NULL; fnp = SH_TAILQ_NEXT(fnp, q, __fname)) - if (fid == fnp->id) - break; - if (fnp == NULL) { - __db_err(dblp->dbenv, "log_unregister: non-existent file id"); - ret = EINVAL; - goto ret1; - } - - /* Unlog the registry. */ - if (!F_ISSET(dblp, DBC_RECOVER)) { - memset(&r_name, 0, sizeof(r_name)); - r_name.data = R_ADDR(dblp, fnp->name_off); - r_name.size = strlen(r_name.data) + 1; - memset(&fid_dbt, 0, sizeof(fid_dbt)); - fid_dbt.data = fnp->ufid; - fid_dbt.size = DB_FILE_ID_LEN; - if ((ret = __log_register_log(dblp, NULL, &r_unused, - 0, LOG_CLOSE, &r_name, &fid_dbt, fid, fnp->s_type)) != 0) - goto ret1; - } - - /* - * If more than 1 reference, just decrement the reference and return. - * Otherwise, free the name. - */ - --fnp->ref; - if (fnp->ref == 0) - __db_shalloc_free(dblp->addr, R_ADDR(dblp, fnp->name_off)); - - /* - * Remove from the process local table. If this operation is taking - * place during recovery, then the logid was never added to the table, - * so do not remove it. - */ - if (!F_ISSET(dblp, DBC_RECOVER)) - __log_rem_logid(dblp, fid); - -ret1: UNLOCK_LOGREGION(dblp); - return (ret); -} |