diff options
Diffstat (limited to 'db2/db/db_iface.c')
| -rw-r--r-- | db2/db/db_iface.c | 488 |
1 files changed, 0 insertions, 488 deletions
diff --git a/db2/db/db_iface.c b/db2/db/db_iface.c deleted file mode 100644 index 4ebf3ba019..0000000000 --- a/db2/db/db_iface.c +++ /dev/null @@ -1,488 +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[] = "@(#)db_iface.c 10.40 (Sleepycat) 12/19/98"; -#endif /* not lint */ - -#ifndef NO_SYSTEM_INCLUDES -#include <sys/types.h> - -#include <errno.h> -#endif - -#include "db_int.h" -#include "db_page.h" -#include "db_auto.h" -#include "db_ext.h" -#include "common_ext.h" - -static int __db_keyempty __P((const DB_ENV *)); -static int __db_rdonly __P((const DB_ENV *, const char *)); -static int __dbt_ferr __P((const DB *, const char *, const DBT *, int)); - -/* - * __db_cdelchk -- - * Common cursor delete argument checking routine. - * - * PUBLIC: int __db_cdelchk __P((const DB *, u_int32_t, int, int)); - */ -int -__db_cdelchk(dbp, flags, isrdonly, isvalid) - const DB *dbp; - u_int32_t flags; - int isrdonly, isvalid; -{ - /* Check for changes to a read-only tree. */ - if (isrdonly) - return (__db_rdonly(dbp->dbenv, "c_del")); - - /* Check for invalid function flags. */ - switch (flags) { - case 0: - break; - default: - return (__db_ferr(dbp->dbenv, "DBcursor->c_del", 0)); - } - - /* - * The cursor must be initialized, return -1 for an invalid cursor, - * otherwise 0. - */ - return (isvalid ? 0 : EINVAL); -} - -/* - * __db_cgetchk -- - * Common cursor get argument checking routine. - * - * PUBLIC: int __db_cgetchk __P((const DB *, DBT *, DBT *, u_int32_t, int)); - */ -int -__db_cgetchk(dbp, key, data, flags, isvalid) - const DB *dbp; - DBT *key, *data; - u_int32_t flags; - int isvalid; -{ - int key_einval, key_flags, ret; - - key_einval = key_flags = 0; - - /* Check for invalid function flags. */ - LF_CLR(DB_RMW); - switch (flags) { - case DB_NEXT_DUP: - if (dbp->type == DB_RECNO) - goto err; - /* FALLTHROUGH */ - case DB_CURRENT: - case DB_FIRST: - case DB_LAST: - case DB_NEXT: - case DB_PREV: - key_flags = 1; - break; - case DB_GET_BOTH: - case DB_SET_RANGE: - key_einval = key_flags = 1; - break; - case DB_SET: - key_einval = 1; - break; - case DB_GET_RECNO: - if (!F_ISSET(dbp, DB_BT_RECNUM)) - goto err; - break; - case DB_SET_RECNO: - if (!F_ISSET(dbp, DB_BT_RECNUM)) - goto err; - key_einval = key_flags = 1; - break; - default: -err: return (__db_ferr(dbp->dbenv, "DBcursor->c_get", 0)); - } - - /* Check for invalid key/data flags. */ - if ((ret = __dbt_ferr(dbp, "key", key, 0)) != 0) - return (ret); - if ((ret = __dbt_ferr(dbp, "data", data, 0)) != 0) - return (ret); - - /* Check for missing keys. */ - if (key_einval && (key->data == NULL || key->size == 0)) - return (__db_keyempty(dbp->dbenv)); - - /* - * The cursor must be initialized for DB_CURRENT, return -1 for an - * invalid cursor, otherwise 0. - */ - return (isvalid || flags != DB_CURRENT ? 0 : EINVAL); -} - -/* - * __db_cputchk -- - * Common cursor put argument checking routine. - * - * PUBLIC: int __db_cputchk __P((const DB *, - * PUBLIC: const DBT *, DBT *, u_int32_t, int, int)); - */ -int -__db_cputchk(dbp, key, data, flags, isrdonly, isvalid) - const DB *dbp; - const DBT *key; - DBT *data; - u_int32_t flags; - int isrdonly, isvalid; -{ - int key_einval, key_flags, ret; - - key_einval = key_flags = 0; - - /* Check for changes to a read-only tree. */ - if (isrdonly) - return (__db_rdonly(dbp->dbenv, "c_put")); - - /* Check for invalid function flags. */ - switch (flags) { - case DB_AFTER: - case DB_BEFORE: - if (dbp->dup_compare != NULL) - goto err; - if (dbp->type == DB_RECNO && !F_ISSET(dbp, DB_RE_RENUMBER)) - goto err; - if (dbp->type != DB_RECNO && !F_ISSET(dbp, DB_AM_DUP)) - goto err; - break; - case DB_CURRENT: - /* - * If there is a comparison function, doing a DB_CURRENT - * must not change the part of the data item that is used - * for the comparison. - */ - break; - case DB_KEYFIRST: - case DB_KEYLAST: - if (dbp->type == DB_RECNO) - goto err; - key_einval = key_flags = 1; - break; - default: -err: return (__db_ferr(dbp->dbenv, "DBcursor->c_put", 0)); - } - - /* Check for invalid key/data flags. */ - if (key_flags && (ret = __dbt_ferr(dbp, "key", key, 0)) != 0) - return (ret); - if ((ret = __dbt_ferr(dbp, "data", data, 0)) != 0) - return (ret); - - /* Check for missing keys. */ - if (key_einval && (key->data == NULL || key->size == 0)) - return (__db_keyempty(dbp->dbenv)); - - /* - * The cursor must be initialized for anything other than DB_KEYFIRST - * and DB_KEYLAST, return -1 for an invalid cursor, otherwise 0. - */ - return (isvalid || - flags == DB_KEYFIRST || flags == DB_KEYLAST ? 0 : EINVAL); -} - -/* - * __db_closechk -- - * DB->close flag check. - * - * PUBLIC: int __db_closechk __P((const DB *, u_int32_t)); - */ -int -__db_closechk(dbp, flags) - const DB *dbp; - u_int32_t flags; -{ - /* Check for invalid function flags. */ - if (flags != 0 && flags != DB_NOSYNC) - return (__db_ferr(dbp->dbenv, "DB->close", 0)); - - return (0); -} - -/* - * __db_delchk -- - * Common delete argument checking routine. - * - * PUBLIC: int __db_delchk __P((const DB *, DBT *, u_int32_t, int)); - */ -int -__db_delchk(dbp, key, flags, isrdonly) - const DB *dbp; - DBT *key; - u_int32_t flags; - int isrdonly; -{ - /* Check for changes to a read-only tree. */ - if (isrdonly) - return (__db_rdonly(dbp->dbenv, "delete")); - - /* Check for invalid function flags. */ - switch (flags) { - case 0: - break; - default: - return (__db_ferr(dbp->dbenv, "DB->del", 0)); - } - - /* Check for missing keys. */ - if (key->data == NULL || key->size == 0) - return (__db_keyempty(dbp->dbenv)); - - return (0); -} - -/* - * __db_getchk -- - * Common get argument checking routine. - * - * PUBLIC: int __db_getchk __P((const DB *, const DBT *, DBT *, u_int32_t)); - */ -int -__db_getchk(dbp, key, data, flags) - const DB *dbp; - const DBT *key; - DBT *data; - u_int32_t flags; -{ - int ret; - - /* Check for invalid function flags. */ - LF_CLR(DB_RMW); - switch (flags) { - case 0: - case DB_GET_BOTH: - break; - case DB_SET_RECNO: - if (!F_ISSET(dbp, DB_BT_RECNUM)) - goto err; - break; - default: -err: return (__db_ferr(dbp->dbenv, "DB->get", 0)); - } - - /* Check for invalid key/data flags. */ - if ((ret = __dbt_ferr(dbp, "key", key, flags == DB_SET_RECNO)) != 0) - return (ret); - if ((ret = __dbt_ferr(dbp, "data", data, 1)) != 0) - return (ret); - - /* Check for missing keys. */ - if (key->data == NULL || key->size == 0) - return (__db_keyempty(dbp->dbenv)); - - return (0); -} - -/* - * __db_joinchk -- - * Common join argument checking routine. - * - * PUBLIC: int __db_joinchk __P((const DB *, u_int32_t)); - */ -int -__db_joinchk(dbp, flags) - const DB *dbp; - u_int32_t flags; -{ - if (flags != 0) - return (__db_ferr(dbp->dbenv, "DB->join", 0)); - - return (0); -} - -/* - * __db_putchk -- - * Common put argument checking routine. - * - * PUBLIC: int __db_putchk - * PUBLIC: __P((const DB *, DBT *, const DBT *, u_int32_t, int, int)); - */ -int -__db_putchk(dbp, key, data, flags, isrdonly, isdup) - const DB *dbp; - DBT *key; - const DBT *data; - u_int32_t flags; - int isrdonly, isdup; -{ - int ret; - - /* Check for changes to a read-only tree. */ - if (isrdonly) - return (__db_rdonly(dbp->dbenv, "put")); - - /* Check for invalid function flags. */ - switch (flags) { - case 0: - case DB_NOOVERWRITE: - break; - case DB_APPEND: - if (dbp->type != DB_RECNO) - goto err; - break; - default: -err: return (__db_ferr(dbp->dbenv, "DB->put", 0)); - } - - /* Check for invalid key/data flags. */ - if ((ret = __dbt_ferr(dbp, "key", key, 0)) != 0) - return (ret); - if ((ret = __dbt_ferr(dbp, "data", data, 0)) != 0) - return (ret); - - /* Check for missing keys. */ - if (key->data == NULL || key->size == 0) - return (__db_keyempty(dbp->dbenv)); - - /* Check for partial puts in the presence of duplicates. */ - if (isdup && F_ISSET(data, DB_DBT_PARTIAL)) { - __db_err(dbp->dbenv, -"a partial put in the presence of duplicates requires a cursor operation"); - return (EINVAL); - } - - return (0); -} - -/* - * __db_statchk -- - * Common stat argument checking routine. - * - * PUBLIC: int __db_statchk __P((const DB *, u_int32_t)); - */ -int -__db_statchk(dbp, flags) - const DB *dbp; - u_int32_t flags; -{ - /* Check for invalid function flags. */ - switch (flags) { - case 0: - break; - case DB_RECORDCOUNT: - if (dbp->type == DB_RECNO) - break; - if (dbp->type == DB_BTREE && F_ISSET(dbp, DB_BT_RECNUM)) - break; - goto err; - default: -err: return (__db_ferr(dbp->dbenv, "DB->stat", 0)); - } - - return (0); -} - -/* - * __db_syncchk -- - * Common sync argument checking routine. - * - * PUBLIC: int __db_syncchk __P((const DB *, u_int32_t)); - */ -int -__db_syncchk(dbp, flags) - const DB *dbp; - u_int32_t flags; -{ - /* Check for invalid function flags. */ - switch (flags) { - case 0: - break; - default: - return (__db_ferr(dbp->dbenv, "DB->sync", 0)); - } - - return (0); -} - -/* - * __dbt_ferr -- - * Check a DBT for flag errors. - */ -static int -__dbt_ferr(dbp, name, dbt, check_thread) - const DB *dbp; - const char *name; - const DBT *dbt; - int check_thread; -{ - int ret; - - /* - * Check for invalid DBT flags. We allow any of the flags to be - * specified to any DB or DBcursor call so that applications can - * set DB_DBT_MALLOC when retrieving a data item from a secondary - * database and then specify that same DBT as a key to a primary - * database, without having to clear flags. - */ - if ((ret = __db_fchk(dbp->dbenv, name, dbt->flags, - DB_DBT_MALLOC | DB_DBT_USERMEM | DB_DBT_PARTIAL)) != 0) - return (ret); - if ((ret = __db_fcchk(dbp->dbenv, name, - dbt->flags, DB_DBT_MALLOC, DB_DBT_USERMEM)) != 0) - return (ret); - - if (check_thread && F_ISSET(dbp, DB_AM_THREAD) && - !F_ISSET(dbt, DB_DBT_MALLOC | DB_DBT_USERMEM)) { - __db_err(dbp->dbenv, - "missing flag thread flag for %s DBT", name); - return (EINVAL); - } - return (0); -} - -/* - * __db_eopnotsup -- - * Common operation not supported message. - * - * PUBLIC: int __db_eopnotsup __P((const DB_ENV *)); - */ -int -__db_eopnotsup(dbenv) - const DB_ENV *dbenv; -{ - __db_err(dbenv, "operation not supported"); -#ifdef EOPNOTSUPP - return (EOPNOTSUPP); -#else - return (EINVAL); -#endif -} - -/* - * __db_keyempty -- - * Common missing or empty key value message. - */ -static int -__db_keyempty(dbenv) - const DB_ENV *dbenv; -{ - __db_err(dbenv, "missing or empty key value specified"); - return (EINVAL); -} - -/* - * __db_rdonly -- - * Common readonly message. - */ -static int -__db_rdonly(dbenv, name) - const DB_ENV *dbenv; - const char *name; -{ - __db_err(dbenv, "%s: attempt to modify a read-only tree", name); - return (EACCES); -} |