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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /security/nss/lib/dbm/src/db.c
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'security/nss/lib/dbm/src/db.c')
-rw-r--r--security/nss/lib/dbm/src/db.c134
1 files changed, 134 insertions, 0 deletions
diff --git a/security/nss/lib/dbm/src/db.c b/security/nss/lib/dbm/src/db.c
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+++ b/security/nss/lib/dbm/src/db.c
@@ -0,0 +1,134 @@
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. ***REMOVED*** - see
+ * ftp://ftp.cs.berkeley.edu/pub/4bsd/README.Impt.License.Change
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)db.c 8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#ifndef __DBINTERFACE_PRIVATE
+#define __DBINTERFACE_PRIVATE
+#endif
+#ifdef macintosh
+#include <unix.h>
+#else
+#include <sys/types.h>
+#endif
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include "mcom_db.h"
+
+/* a global flag that locks closed all databases */
+int all_databases_locked_closed = 0;
+
+/* set or unset a global lock flag to disable the
+ * opening of any DBM file
+ */
+void
+dbSetOrClearDBLock(DBLockFlagEnum type)
+{
+ if (type == LockOutDatabase)
+ all_databases_locked_closed = 1;
+ else
+ all_databases_locked_closed = 0;
+}
+
+DB *
+dbopen(const char *fname, int flags, int mode, DBTYPE type, const void *openinfo)
+{
+
+ /* lock out all file databases. Let in-memory databases through
+ */
+ if (all_databases_locked_closed && fname) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+#define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN)
+
+#if 0 /* most systems don't have EXLOCK and SHLOCK */
+#define USE_OPEN_FLAGS \
+ (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \
+ O_RDWR | O_SHLOCK | O_TRUNC)
+#else
+#define USE_OPEN_FLAGS \
+ (O_CREAT | O_EXCL | O_RDONLY | \
+ O_RDWR | O_TRUNC)
+#endif
+
+ if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
+ switch (type) {
+/* we don't need btree and recno right now */
+#if 0
+ case DB_BTREE:
+ return (__bt_open(fname, flags & USE_OPEN_FLAGS,
+ mode, openinfo, flags & DB_FLAGS));
+ case DB_RECNO:
+ return (__rec_open(fname, flags & USE_OPEN_FLAGS,
+ mode, openinfo, flags & DB_FLAGS));
+#endif
+
+ case DB_HASH:
+ return (__hash_open(fname, flags & USE_OPEN_FLAGS,
+ mode, (const HASHINFO *)openinfo, flags & DB_FLAGS));
+ default:
+ break;
+ }
+ errno = EINVAL;
+ return (NULL);
+}
+
+static int
+__dberr()
+{
+ return (RET_ERROR);
+}
+
+/*
+ * __DBPANIC -- Stop.
+ *
+ * Parameters:
+ * dbp: pointer to the DB structure.
+ */
+void
+__dbpanic(DB *dbp)
+{
+ /* The only thing that can succeed is a close. */
+ dbp->del = (int (*)(const struct __db *, const DBT *, uint))__dberr;
+ dbp->fd = (int (*)(const struct __db *))__dberr;
+ dbp->get = (int (*)(const struct __db *, const DBT *, DBT *, uint))__dberr;
+ dbp->put = (int (*)(const struct __db *, DBT *, const DBT *, uint))__dberr;
+ dbp->seq = (int (*)(const struct __db *, DBT *, DBT *, uint))__dberr;
+ dbp->sync = (int (*)(const struct __db *, uint))__dberr;
+}