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authorUlrich Drepper <drepper@redhat.com>1999-06-13 13:36:34 +0000
committerUlrich Drepper <drepper@redhat.com>1999-06-13 13:36:34 +0000
commitec239360d13518a13f572b635d036c7d10028010 (patch)
treebdb5111363f45d2107849c2456b575d72779174c /db2/dbm/dbm.c
parentfc3703521650a9b6db910a50c4fc0f410496e134 (diff)
Update.
* db2/Makefile (distribute): Remove files which do not exist anymore.
Diffstat (limited to 'db2/dbm/dbm.c')
-rw-r--r--db2/dbm/dbm.c199
1 files changed, 127 insertions, 72 deletions
diff --git a/db2/dbm/dbm.c b/db2/dbm/dbm.c
index 261fe81ff2..5bcb53f023 100644
--- a/db2/dbm/dbm.c
+++ b/db2/dbm/dbm.c
@@ -47,7 +47,7 @@
#include "config.h"
#ifndef lint
-static const char sccsid[] = "@(#)dbm.c 10.16 (Sleepycat) 5/7/98";
+static const char sccsid[] = "@(#)dbm.c 10.23 (Sleepycat) 11/22/98";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
@@ -89,6 +89,16 @@ __db_dbm_init(file)
}
weak_alias (__db_dbm_init, dbminit)
+int
+__db_dbm_close()
+{
+ if (__cur_db != NULL) {
+ dbm_close(__cur_db);
+ __cur_db = NULL;
+ }
+ return (0);
+}
+
datum
__db_dbm_fetch(key)
datum key;
@@ -140,16 +150,11 @@ int
__db_dbm_delete(key)
datum key;
{
- int ret;
-
if (__cur_db == NULL) {
__db_no_open();
return (-1);
}
- ret = dbm_delete(__cur_db, key);
- if (ret == 0)
- ret = (((DB *)__cur_db)->sync)((DB *)__cur_db, 0);
- return (ret);
+ return (dbm_delete(__cur_db, key));
}
weak_alias (__db_dbm_delete, delete)
@@ -157,16 +162,11 @@ int
__db_dbm_store(key, dat)
datum key, dat;
{
- int ret;
-
if (__cur_db == NULL) {
__db_no_open();
return (-1);
}
- ret = dbm_store(__cur_db, key, dat, DBM_REPLACE);
- if (ret == 0)
- ret = (((DB *)__cur_db)->sync)((DB *)__cur_db, 0);
- return (ret);
+ return (dbm_store(__cur_db, key, dat, DBM_REPLACE));
}
weak_alias (__db_dbm_store, store)
@@ -192,7 +192,9 @@ __db_ndbm_open(file, oflags, mode)
int oflags, mode;
{
DB *dbp;
+ DBC *dbc;
DB_INFO dbinfo;
+ int sv_errno;
char path[MAXPATHLEN];
memset(&dbinfo, 0, sizeof(dbinfo));
@@ -215,7 +217,15 @@ __db_ndbm_open(file, oflags, mode)
if ((errno = db_open(path,
DB_HASH, __db_oflags(oflags), mode, NULL, &dbinfo, &dbp)) != 0)
return (NULL);
- return ((DBM *)dbp);
+
+ if ((errno = dbp->cursor(dbp, NULL, &dbc, 0)) != 0) {
+ sv_errno = errno;
+ (void)dbp->close(dbp, 0);
+ errno = sv_errno;
+ return (NULL);
+ }
+
+ return ((DBM *)dbc);
}
weak_alias (__db_ndbm_open, dbm_open)
@@ -224,10 +234,14 @@ weak_alias (__db_ndbm_open, dbm_open)
* Nothing.
*/
void
-__db_ndbm_close(db)
- DBM *db;
+__db_ndbm_close(dbm)
+ DBM *dbm;
{
- (void)db->close(db, 0);
+ DBC *dbc;
+
+ dbc = (DBC *)dbm;
+
+ (void)dbc->dbp->close(dbc->dbp, 0);
}
weak_alias (__db_ndbm_close, dbm_close)
@@ -237,25 +251,39 @@ weak_alias (__db_ndbm_close, dbm_close)
* NULL on failure
*/
datum
-__db_ndbm_fetch(db, key)
- DBM *db;
+__db_ndbm_fetch(dbm, key)
+ DBM *dbm;
datum key;
{
+ DBC *dbc;
DBT _key, _data;
datum data;
int ret;
+ dbc = (DBC *)dbm;
+
memset(&_key, 0, sizeof(DBT));
memset(&_data, 0, sizeof(DBT));
_key.size = key.dsize;
_key.data = key.dptr;
- if ((ret = db->get((DB *)db, NULL, &_key, &_data, 0)) == 0) {
+
+ /*
+ * Note that we can't simply use the dbc we have to do a c_get/SET,
+ * because that cursor is the one used for sequential iteration and
+ * it has to remain stable in the face of intervening gets and puts.
+ */
+ if ((ret = dbc->dbp->get(dbc->dbp, NULL, &_key, &_data, 0)) == 0) {
data.dptr = _data.data;
data.dsize = _data.size;
} else {
data.dptr = NULL;
data.dsize = 0;
- __set_errno (ret == DB_NOTFOUND ? ENOENT : ret);
+ if (ret == DB_NOTFOUND)
+ errno = ENOENT;
+ else {
+ errno = ret;
+ F_SET(dbc->dbp, DB_DBM_ERROR);
+ }
}
return (data);
}
@@ -267,30 +295,31 @@ weak_alias (__db_ndbm_fetch, dbm_fetch)
* NULL on failure
*/
datum
-__db_ndbm_firstkey(db)
- DBM *db;
+__db_ndbm_firstkey(dbm)
+ DBM *dbm;
{
+ DBC *dbc;
DBT _key, _data;
datum key;
int ret;
- DBC *cp;
-
- if ((cp = TAILQ_FIRST(&db->curs_queue)) == NULL)
- if ((errno = db->cursor(db, NULL, &cp)) != 0) {
- memset(&key, 0, sizeof(key));
- return (key);
- }
+ dbc = (DBC *)dbm;
memset(&_key, 0, sizeof(DBT));
memset(&_data, 0, sizeof(DBT));
- if ((ret = (cp->c_get)(cp, &_key, &_data, DB_FIRST)) == 0) {
+
+ if ((ret = dbc->c_get(dbc, &_key, &_data, DB_FIRST)) == 0) {
key.dptr = _key.data;
key.dsize = _key.size;
} else {
key.dptr = NULL;
key.dsize = 0;
- __set_errno (ret == DB_NOTFOUND ? ENOENT : ret);
+ if (ret == DB_NOTFOUND)
+ errno = ENOENT;
+ else {
+ errno = ret;
+ F_SET(dbc->dbp, DB_DBM_ERROR);
+ }
}
return (key);
}
@@ -302,29 +331,31 @@ weak_alias (__db_ndbm_firstkey, dbm_firstkey)
* NULL on failure
*/
datum
-__db_ndbm_nextkey(db)
- DBM *db;
+__db_ndbm_nextkey(dbm)
+ DBM *dbm;
{
- DBC *cp;
+ DBC *dbc;
DBT _key, _data;
datum key;
int ret;
- if ((cp = TAILQ_FIRST(&db->curs_queue)) == NULL)
- if ((errno = db->cursor(db, NULL, &cp)) != 0) {
- memset(&key, 0, sizeof(key));
- return (key);
- }
+ dbc = (DBC *)dbm;
memset(&_key, 0, sizeof(DBT));
memset(&_data, 0, sizeof(DBT));
- if ((ret = (cp->c_get)(cp, &_key, &_data, DB_NEXT)) == 0) {
+
+ if ((ret = dbc->c_get(dbc, &_key, &_data, DB_NEXT)) == 0) {
key.dptr = _key.data;
key.dsize = _key.size;
} else {
key.dptr = NULL;
key.dsize = 0;
- __set_errno (ret == DB_NOTFOUND ? ENOENT : ret);
+ if (ret == DB_NOTFOUND)
+ errno = ENOENT;
+ else {
+ errno = ret;
+ F_SET(dbc->dbp, DB_DBM_ERROR);
+ }
}
return (key);
}
@@ -336,19 +367,29 @@ weak_alias (__db_ndbm_nextkey, dbm_nextkey)
* <0 failure
*/
int
-__db_ndbm_delete(db, key)
- DBM *db;
+__db_ndbm_delete(dbm, key)
+ DBM *dbm;
datum key;
{
+ DBC *dbc;
DBT _key;
int ret;
+ dbc = (DBC *)dbm;
+
memset(&_key, 0, sizeof(DBT));
_key.data = key.dptr;
_key.size = key.dsize;
- if ((ret = (((DB *)db)->del)((DB *)db, NULL, &_key, 0)) == 0)
+
+ if ((ret = dbc->dbp->del(dbc->dbp, NULL, &_key, 0)) == 0)
return (0);
- errno = ret == DB_NOTFOUND ? ENOENT : ret;
+
+ if (ret == DB_NOTFOUND)
+ errno = ENOENT;
+ else {
+ errno = ret;
+ F_SET(dbc->dbp, DB_DBM_ERROR);
+ }
return (-1);
}
weak_alias (__db_ndbm_delete, dbm_delete)
@@ -360,49 +401,59 @@ weak_alias (__db_ndbm_delete, dbm_delete)
* 1 if DBM_INSERT and entry exists
*/
int
-__db_ndbm_store(db, key, data, flags)
- DBM *db;
+__db_ndbm_store(dbm, key, data, flags)
+ DBM *dbm;
datum key, data;
int flags;
{
+ DBC *dbc;
DBT _key, _data;
int ret;
+ dbc = (DBC *)dbm;
+
memset(&_key, 0, sizeof(DBT));
- memset(&_data, 0, sizeof(DBT));
_key.data = key.dptr;
_key.size = key.dsize;
+
+ memset(&_data, 0, sizeof(DBT));
_data.data = data.dptr;
_data.size = data.dsize;
- if ((ret = db->put((DB *)db, NULL,
+
+ if ((ret = dbc->dbp->put(dbc->dbp, NULL,
&_key, &_data, flags == DBM_INSERT ? DB_NOOVERWRITE : 0)) == 0)
return (0);
+
if (ret == DB_KEYEXIST)
return (1);
+
errno = ret;
+ F_SET(dbc->dbp, DB_DBM_ERROR);
return (-1);
}
weak_alias (__db_ndbm_store, dbm_store)
int
-__db_ndbm_error(db)
- DBM *db;
+__db_ndbm_error(dbm)
+ DBM *dbm;
{
- HTAB *hp;
+ DBC *dbc;
- hp = (HTAB *)db->internal;
- return (hp->local_errno);
+ dbc = (DBC *)dbm;
+
+ return (F_ISSET(dbc->dbp, DB_DBM_ERROR));
}
weak_alias (__db_ndbm_error, dbm_error)
int
-__db_ndbm_clearerr(db)
- DBM *db;
+__db_ndbm_clearerr(dbm)
+ DBM *dbm;
{
- HTAB *hp;
+ DBC *dbc;
+
+ dbc = (DBC *)dbm;
- hp = (HTAB *)db->internal;
- hp->local_errno = 0;
+ F_CLR(dbc->dbp, DB_DBM_ERROR);
return (0);
}
weak_alias (__db_ndbm_clearerr, dbm_clearerr)
@@ -413,10 +464,14 @@ weak_alias (__db_ndbm_clearerr, dbm_clearerr)
* 0 if not read-only
*/
int
-__db_ndbm_rdonly(db)
- DBM *db;
+__db_ndbm_rdonly(dbm)
+ DBM *dbm;
{
- return (F_ISSET((DB *)db, DB_AM_RDONLY) ? 1 : 0);
+ DBC *dbc;
+
+ dbc = (DBC *)dbm;
+
+ return (F_ISSET(dbc->dbp, DB_AM_RDONLY) ? 1 : 0);
}
/*
@@ -426,23 +481,23 @@ __db_ndbm_rdonly(db)
* and picked one to use at random.
*/
int
-__db_ndbm_dirfno(db)
- DBM *db;
+__db_ndbm_dirfno(dbm)
+ DBM *dbm;
{
- int fd;
-
- (void)db->fd(db, &fd);
- return (fd);
+ return (dbm_pagfno(dbm));
}
weak_alias (__db_ndbm_dirfno, dbm_dirfno)
int
-__db_ndbm_pagfno(db)
- DBM *db;
+__db_ndbm_pagfno(dbm)
+ DBM *dbm;
{
+ DBC *dbc;
int fd;
- (void)db->fd(db, &fd);
+ dbc = (DBC *)dbm;
+
+ (void)dbc->dbp->fd(dbc->dbp, &fd);
return (fd);
}
weak_alias (__db_ndbm_pagfno, dbm_pagfno)