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Diffstat (limited to 'db2/db/db.c')
-rw-r--r--db2/db/db.c113
1 files changed, 68 insertions, 45 deletions
diff --git a/db2/db/db.c b/db2/db/db.c
index 8df7634..9951ebd 100644
--- a/db2/db/db.c
+++ b/db2/db/db.c
@@ -1,7 +1,7 @@
/*-
* See the file LICENSE for redistribution information.
*
- * Copyright (c) 1996, 1997
+ * Copyright (c) 1996, 1997, 1998
* Sleepycat Software. All rights reserved.
*/
/*
@@ -44,20 +44,16 @@
#include "config.h"
#ifndef lint
-static const char sccsid[] = "@(#)db.c 10.45 (Sleepycat) 12/4/97";
+static const char sccsid[] = "@(#)db.c 10.57 (Sleepycat) 5/7/98";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
-#include <sys/stat.h>
#include <errno.h>
-#include <fcntl.h>
#include <stddef.h>
-#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <unistd.h>
#endif
#include "db_int.h"
@@ -71,7 +67,7 @@ static const char sccsid[] = "@(#)db.c 10.45 (Sleepycat) 12/4/97";
#include "db_am.h"
#include "common_ext.h"
-static int db_close __P((DB *, int));
+static int db_close __P((DB *, u_int32_t));
static int db_fd __P((DB *, int *));
/*
@@ -99,7 +95,8 @@ int
db_open(fname, type, flags, mode, dbenv, dbinfo, dbpp)
const char *fname;
DBTYPE type;
- int flags, mode;
+ u_int32_t flags;
+ int mode;
DB_ENV *dbenv;
DB_INFO *dbinfo;
DB **dbpp;
@@ -108,6 +105,7 @@ db_open(fname, type, flags, mode, dbenv, dbinfo, dbpp)
DB *dbp;
DBT pgcookie;
DB_ENV *envp, t_dbenv;
+ DB_MPOOL_FINFO finfo;
DB_PGINFO pginfo;
HASHHDR *hashm;
size_t cachesize;
@@ -125,10 +123,26 @@ db_open(fname, type, flags, mode, dbenv, dbinfo, dbpp)
if ((ret = __db_fchk(dbenv, "db_open", flags, OKFLAGS)) != 0)
return (ret);
- if (dbenv != NULL &&
- LF_ISSET(DB_THREAD) && !F_ISSET(dbenv, DB_ENV_THREAD)) {
- __db_err(dbenv, "environment not created using DB_THREAD");
- return (EINVAL);
+ if (dbenv != NULL) {
+ /*
+ * You can't specify threads during the db_open() if the
+ * environment wasn't configured with them.
+ */
+ if (LF_ISSET(DB_THREAD) && !F_ISSET(dbenv, DB_ENV_THREAD)) {
+ __db_err(dbenv,
+ "environment not created using DB_THREAD");
+ return (EINVAL);
+ }
+
+ /*
+ * Specifying a cachesize to db_open(3), after creating an
+ * environment, is a common mistake.
+ */
+ if (dbinfo != NULL && dbinfo->db_cachesize != 0) {
+ __db_err(dbenv,
+ "cachesize will be ignored if environment exists");
+ return (EINVAL);
+ }
}
/* Initialize for error return. */
@@ -203,7 +217,7 @@ db_open(fname, type, flags, mode, dbenv, dbinfo, dbpp)
/* Fill in the default file mode. */
if (mode == 0)
- mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
+ mode = __db_omode("rwrw--");
/* Check if the user wants us to swap byte order. */
if (dbinfo != NULL)
@@ -230,7 +244,7 @@ db_open(fname, type, flags, mode, dbenv, dbinfo, dbpp)
if (fname != NULL && fname[0] != '\0') {
/* Get the real file name. */
if ((ret = __db_appname(dbenv,
- DB_APP_DATA, NULL, fname, NULL, &real_name)) != 0)
+ DB_APP_DATA, NULL, fname, 0, NULL, &real_name)) != 0)
goto err;
/*
@@ -455,22 +469,6 @@ empty: /*
}
/*
- * Set and/or correct the cache size; must be a multiple of the
- * page size.
- */
- if (dbinfo == NULL || dbinfo->db_cachesize == 0)
- cachesize = dbp->pgsize * DB_MINCACHE;
- else {
- cachesize = dbinfo->db_cachesize;
- if (cachesize & (dbp->pgsize - 1))
- cachesize += (~cachesize & (dbp->pgsize - 1)) + 1;
- if (cachesize < dbp->pgsize * DB_MINCACHE)
- cachesize = dbp->pgsize * DB_MINCACHE;
- if (cachesize < 20 * 1024)
- cachesize = 20 * 1024;
- }
-
- /*
* If no mpool supplied by the application, attach to a local,
* created buffer pool.
*
@@ -499,10 +497,28 @@ empty: /*
envp = dbenv;
restore = 1;
}
+
+ /*
+ * Set and/or correct the cache size; must be a multiple of
+ * the page size.
+ */
+ if (dbinfo == NULL || dbinfo->db_cachesize == 0)
+ cachesize = dbp->pgsize * DB_MINCACHE;
+ else {
+ cachesize = dbinfo->db_cachesize;
+ if (cachesize & (dbp->pgsize - 1))
+ cachesize +=
+ (~cachesize & (dbp->pgsize - 1)) + 1;
+ if (cachesize < dbp->pgsize * DB_MINCACHE)
+ cachesize = dbp->pgsize * DB_MINCACHE;
+ if (cachesize < 20 * 1024)
+ cachesize = 20 * 1024;
+ }
envp->mp_size = cachesize;
+
if ((ret = memp_open(NULL, DB_CREATE | DB_MPOOL_PRIVATE |
(F_ISSET(dbp, DB_AM_THREAD) ? DB_THREAD : 0),
- S_IRUSR | S_IWUSR, envp, &dbp->mp)) != 0)
+ __db_omode("rw----"), envp, &dbp->mp)) != 0)
goto err;
if (restore)
*dbenv = t_dbenv;
@@ -566,9 +582,18 @@ empty: /*
pgcookie.data = &pginfo;
pgcookie.size = sizeof(DB_PGINFO);
- if ((ret = memp_fopen(dbp->mp, fname, ftype,
- F_ISSET(dbp, DB_AM_RDONLY) ? DB_RDONLY : 0, 0, dbp->pgsize,
- 0, &pgcookie, dbp->lock.fileid, &dbp->mpf)) != 0)
+ /*
+ * Set up additional memp_fopen information.
+ */
+ memset(&finfo, 0, sizeof(finfo));
+ finfo.ftype = ftype;
+ finfo.pgcookie = &pgcookie;
+ finfo.fileid = dbp->lock.fileid;
+ finfo.lsn_offset = 0;
+ finfo.clear_len = DB_PAGE_CLEAR_LEN;
+ if ((ret = memp_fopen(dbp->mp, fname,
+ F_ISSET(dbp, DB_AM_RDONLY) ? DB_RDONLY : 0,
+ 0, dbp->pgsize, &finfo, &dbp->mpf)) != 0)
goto err;
/*
@@ -673,7 +698,7 @@ err: /* Close the file descriptor. */
static int
db_close(dbp, flags)
DB *dbp;
- int flags;
+ u_int32_t flags;
{
DBC *dbc;
DB *tdbp;
@@ -734,7 +759,7 @@ db_close(dbp, flags)
}
/* Sync the memory pool. */
- if ((t_ret = memp_fsync(dbp->mpf)) != 0 &&
+ if (!LF_ISSET(DB_NOSYNC) && (t_ret = memp_fsync(dbp->mpf)) != 0 &&
t_ret != DB_INCOMPLETE && ret == 0)
ret = t_ret;
@@ -796,18 +821,11 @@ db_fd(dbp, fdp)
DB *dbp;
int *fdp;
{
- /* In-memory database can't have a file descriptor. */
- if (F_ISSET(dbp, DB_AM_INMEM))
- return (ENOENT);
-
/*
* XXX
- * Truly spectacular layering violation. As we don't open the
- * underlying file until we need it, it may not be initialized.
+ * Truly spectacular layering violation.
*/
- if ((*fdp = dbp->mpf->fd) == -1)
- return (ENOENT);
- return (0);
+ return (__mp_xxx_fd(dbp->mpf, fdp));
}
/*
@@ -821,6 +839,11 @@ __db_pgerr(dbp, pgno)
DB *dbp;
db_pgno_t pgno;
{
+ /*
+ * Three things are certain:
+ * Death, taxes, and lost data.
+ * Guess which has occurred.
+ */
__db_err(dbp->dbenv,
"unable to create/retrieve page %lu", (u_long)pgno);
return (__db_panic(dbp));
generated by cgit v1.1 at 2024-12-29 02:00:01 +0000