OpenSolaris Launch

1 files changed, 120 insertions, 0 deletions

diff --git a/usr/src/lib/lvm/libsvm/common/modops.c b/usr/src/lib/lvm/libsvm/common/modops.c
new file mode 100644
index 0000000000..78914a9069
--- /dev/null
+++ b/usr/src/lib/lvm/libsvm/common/modops.c
@@ -0,0 +1,120 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*
+ * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+#include <sys/wait.h>
+#include <sys/errno.h>
+#include <sys/modctl.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <svm.h>
+
+/*
+ * FUNCTION: get modid
+ *	Given a module name returns module id.
+ *
+ * INPUT: module name
+ *
+ * RETURN VALUES:
+ *		> 0 SUCCESS
+ *              -1 FAIL
+ */
+
+static int
+get_modid(char *modname)
+{
+	struct modinfo modinfo;
+	int id;
+	int rval = RET_ERROR;
+
+	id = -1; /* look for all modules */
+
+	modinfo.mi_id = modinfo.mi_nextid = id;
+	modinfo.mi_info = MI_INFO_ALL | MI_INFO_NOBASE;
+
+	do {
+		if (modctl(MODINFO, id, &modinfo) < 0)
+			break;
+
+		modinfo.mi_name[MODMAXNAMELEN - 1] = '\0';
+		/* if we find a match break out */
+		if (strcmp(modinfo.mi_name, modname) == 0) {
+			rval = modinfo.mi_id;
+			break;
+		}
+	/* LINTED */
+	} while (1);
+
+	return (rval);
+}
+
+/*
+ * FUNCTION: mod_unload
+ *	unload a module.
+ *
+ * INPUT: module name
+ *
+ * RETURN VALUES:
+ *	0 - SUCCESS
+ *	!0 - FAIL
+ *		> 0 errno
+ *		-1
+ * NOTE: If we fail to get the module id because the module is not
+ * currently loaded we still want to try to force a reload of the
+ * .conf file when it does load.
+ */
+int
+mod_unload(char *modname)
+{
+	int id;
+	major_t major;
+	int	rval = RET_SUCCESS;
+
+	id = get_modid(modname);
+
+	if (id != -1) {
+		if (modctl(MODUNLOAD, id) < 0) {
+			rval = errno;
+		}
+	}
+
+	if ((modctl(MODGETMAJBIND, modname, strlen(modname) + 1,
+	    &major)) != 0) {
+		return (errno);
+	}
+
+	if ((modctl(MODUNLOADDRVCONF, major) != 0) ||
+	    (modctl(MODLOADDRVCONF, major) != 0)) {
+		return (errno);
+	}
+
+	return (rval);
+}