Import macOS userland

adv_cmds-176
basic_cmds-55
bootstrap_cmds-116.100.1
developer_cmds-66
diskdev_cmds-667.40.1
doc_cmds-53.60.1
file_cmds-321.40.3
mail_cmds-35
misc_cmds-34
network_cmds-606.40.1
patch_cmds-17
remote_cmds-63
shell_cmds-216.60.1
system_cmds-880.60.2
text_cmds-106

1 files changed, 211 insertions, 0 deletions

diff --git a/system_cmds/sa.tproj/db.c b/system_cmds/sa.tproj/db.c
new file mode 100644
index 0000000..299eeea
--- /dev/null
+++ b/system_cmds/sa.tproj/db.c
@@ -0,0 +1,211 @@
+/*-
+ * Copyright (c) 2007 Diomidis Spinellis
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ *
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: src/usr.sbin/sa/db.c,v 1.3 2008/02/21 07:12:56 grog Exp $");
+
+#include <sys/types.h>
+#include <sys/acct.h>
+
+#include <ctype.h>
+#include <err.h>
+#include <errno.h>
+#include <db.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <limits.h>
+
+#include "extern.h"
+
+/* Key used to store the version of the database data elements. */
+#define VERSION_KEY "\0VERSION"
+
+/*
+ * Create the in-memory database, *mdb.
+ * If iflag is not set, fill-in mdb with the records of the disk-based
+ * database dbname.
+ * Upgrade old-version records by calling v1_to_v2.
+ * Return 0 if OK, -1 on error.
+ */
+int
+db_copy_in(DB **mdb, const char *dbname, const char *uname, BTREEINFO *bti,
+    int (*v1_to_v2)(DBT *key, DBT *data))
+{
+	DBT key, data;
+	DB *ddb;
+	int error, rv, version;
+
+	if ((*mdb = dbopen(NULL, O_RDWR, 0, DB_BTREE, bti)) == NULL)
+		return (-1);
+
+	if (iflag)
+		return (0);
+
+	if ((ddb = dbopen(dbname, O_RDONLY, 0, DB_BTREE, bti)) == NULL) {
+		if (errno == ENOENT)
+			return (0);
+		warn("retrieving %s summary", uname);
+		db_destroy(*mdb, uname);
+		return (-1);
+	}
+
+	error = 0;
+
+	/* Obtain/set version. */
+	version = 1;
+	key.data = &VERSION_KEY;
+	key.size = sizeof(VERSION_KEY);
+
+	rv = DB_GET(ddb, &key, &data, 0);
+	if (rv < 0) {
+		warn("get version key from %s stats", uname);
+		error = -1;
+		goto closeout;
+	} else if (rv == 0) {	/* It's there; verify version. */
+		if (data.size != sizeof(version)) {
+			warnx("invalid version size %zd in %s",
+			    data.size, uname);
+			error = -1;
+			goto closeout;
+		}
+		memcpy(&version, data.data, data.size);
+		if (version != 2) {
+			warnx("unsupported version %d in %s",
+			    version, uname);
+			error = -1;
+			goto closeout;
+		}
+	}
+
+	for (rv = DB_SEQ(ddb, &key, &data, R_FIRST); rv == 0;
+	    rv = DB_SEQ(ddb, &key, &data, R_NEXT)) {
+
+		/* See if this is a version record. */
+		if (key.size == sizeof(VERSION_KEY) &&
+		    memcmp(key.data, VERSION_KEY, sizeof(VERSION_KEY)) == 0)
+			continue;
+
+		/* Convert record from v1, if needed. */
+		if (version == 1 && v1_to_v2(&key, &data) < 0) {
+			warn("converting %s stats", uname);
+			error = -1;
+			goto closeout;
+		}
+
+		/* Copy record to the in-memory database. */
+		if ((rv = DB_PUT(*mdb, &key, &data, 0)) < 0) {
+			warn("initializing %s stats", uname);
+			error = -1;
+			goto closeout;
+		}
+	}
+	if (rv < 0) {
+		warn("retrieving %s summary", uname);
+		error = -1;
+	}
+
+closeout:
+	if (DB_CLOSE(ddb) < 0) {
+		warn("closing %s summary", uname);
+		error = -1;
+	}
+
+	if (error)
+		db_destroy(*mdb, uname);
+	return (error);
+}
+
+/*
+ * Save the in-memory database mdb to the disk database dbname.
+ * Return 0 if OK, -1 on error.
+ */
+int
+db_copy_out(DB *mdb, const char *dbname, const char *uname, BTREEINFO *bti)
+{
+	DB *ddb;
+	DBT key, data;
+	int error, rv, version;
+
+	if ((ddb = dbopen(dbname, O_RDWR|O_CREAT|O_TRUNC, 0644,
+	    DB_BTREE, bti)) == NULL) {
+		warn("creating %s summary", uname);
+		return (-1);
+	}
+
+	error = 0;
+
+	for (rv = DB_SEQ(mdb, &key, &data, R_FIRST);
+	    rv == 0; rv = DB_SEQ(mdb, &key, &data, R_NEXT)) {
+		if ((rv = DB_PUT(ddb, &key, &data, 0)) < 0) {
+			warn("saving %s summary", uname);
+			error = -1;
+			goto out;
+		}
+	}
+	if (rv < 0) {
+		warn("retrieving %s stats", uname);
+		error = -1;
+	}
+
+out:
+#ifndef __APPLE__
+	/* Add a version record. */
+	key.data = &VERSION_KEY;
+	key.size = sizeof(VERSION_KEY);
+	version = 2;
+	data.data = &version;
+	data.size = sizeof(version);
+	if ((rv = DB_PUT(ddb, &key, &data, 0)) < 0) {
+		warn("add version record to %s stats", uname);
+		error = -1;
+	} else if (rv == 1) {
+		warnx("duplicate version record in %s stats", uname);
+		error = -1;
+	}
+#else
+	version = 1; // avoid unused warning
+#endif
+
+	if (DB_SYNC(ddb, 0) < 0) {
+		warn("syncing %s summary", uname);
+		error = -1;
+	}
+	if (DB_CLOSE(ddb) < 0) {
+		warn("closing %s summary", uname);
+		error = -1;
+	}
+	return error;
+}
+
+void
+db_destroy(DB *db, const char *uname)
+{
+	if (DB_CLOSE(db) < 0)
+		warn("destroying %s stats", uname);
+}