OpenSolaris Launch

1 files changed, 169 insertions, 0 deletions

diff --git a/usr/src/lib/lvm/libsvm/common/check_svm.c b/usr/src/lib/lvm/libsvm/common/check_svm.c
new file mode 100644
index 0000000000..5c92ac2788
--- /dev/null
+++ b/usr/src/lib/lvm/libsvm/common/check_svm.c
@@ -0,0 +1,169 @@
+/*
+ * 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 2003 Sun Microsystems, Inc.  All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#pragma ident	"%Z%%M%	%I%	%E% SMI"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+#include <meta.h>
+#include <sys/types.h>
+#include <sys/mkdev.h>
+#include <sys/stat.h>
+#include <limits.h>
+#include <svm.h>
+
+/*
+ * FUNCTION: valid_bootlist
+ *
+ * INPUT: file pointer, line buffer, line_length
+ *
+ * RETURN VALUES:
+ *	0 - SUCCESS
+ *	-1 - FAIL
+ *
+ */
+
+int
+valid_bootlist(FILE *fp, int line_len)
+{
+	char *bp = NULL;
+	char *line;
+
+	/*
+	 * errno may not be cleared by callee routines and we
+	 * we want to catch fgets failures hence errno is reset.
+	 */
+	errno = 0;
+	if ((line = malloc(line_len)) == NULL)
+		return (RET_ERROR);
+
+	while (fgets(line, line_len, fp) != NULL) {
+		bp = strstr(line, "mddb_bootlist");
+		if (bp != NULL) {
+			/* if not commented out then breakout */
+			if (*line != '*' && *line != '#') {
+				break;
+			}
+		}
+	}
+
+	free(line);
+	if (bp == NULL || errno != 0)
+		return (RET_ERROR);
+
+	return (RET_SUCCESS);
+}
+
+/*
+ * FUNCTION: svm_check
+ *	Check the existance of DiskSuite or SVM
+ *
+ * INPUT: rootpath
+ *
+ * RETURN VALUES:
+ *	0 - SUCCESS
+ *	-1 - FAIL
+ */
+
+int
+svm_check(char *path)
+{
+	FILE *fp;
+	char tmppath[PATH_MAX];
+	int rval;
+
+	(void) strcat(strcpy(tmppath, path), MD_CONF);
+
+	if ((fp = fopen(tmppath, "r")) == NULL) {
+		rval = errno;
+		goto free_exit;
+	}
+
+	rval = valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN);
+
+	debug_printf("svm_check(): valid bootlist in %s. status %d\n",
+		tmppath, rval);
+
+	if (rval == RET_SUCCESS) {
+		goto free_exit;
+	}
+	(void) fclose(fp);
+
+	/* not found in md.conf  try etc/system */
+	(void) strcat(strcpy(tmppath, path), SYSTEM_FILE);
+
+	if ((fp = fopen(tmppath, "r")) == NULL) {
+		rval = errno;
+		goto free_exit;
+	}
+
+	rval = valid_bootlist(fp, MDDB_BOOTLIST_MAX_LEN);
+
+	debug_printf("svm_check(): valid bootlist in %s. status %d\n",
+		tmppath, rval);
+free_exit:
+	(void) fclose(fp);
+	if (rval > 0)
+		rval = RET_ERROR;
+	return (rval);
+}
+
+/*
+ * FUNCTION: svm_is_md
+ *	Check if the the given device name has an md driver.
+ * INPUT: special device name (/dev/dsk/c0t0d0s0 or /dev/md/dsk/d10)
+ *
+ * RETURN:
+ *	1 - if it is a metadevice.
+ *	0 - if it is not a metadevice.
+ */
+
+int
+svm_is_md(char *device_name)
+{
+	char buf[30];
+	struct stat sbuf;
+	int rval = 0;
+
+	(void) memset(buf, 0, 30);
+
+	debug_printf("svm_is_md(): device %s\n", device_name);
+	if (stat(device_name, &sbuf) != 0)
+		return (RET_ERROR);
+
+	if (get_drv_name(major(sbuf.st_rdev), "/", buf) == RET_ERROR) {
+		debug_printf("svm_is_md(): device get_drv_name failed: %s\n",
+				device_name);
+		return (0);
+	}
+	if (strcmp(buf, MD_MODULE) == 0) {
+		debug_printf("svm_is_md(): device %s succeed\n", device_name);
+		rval = 1;
+	}
+	return (rval);
+}