OpenSolaris Launch

1 files changed, 90 insertions, 0 deletions

diff --git a/usr/src/lib/lvm/libsvm/common/getdrvname.c b/usr/src/lib/lvm/libsvm/common/getdrvname.c
new file mode 100644
index 0000000000..9bef7fa115
--- /dev/null
+++ b/usr/src/lib/lvm/libsvm/common/getdrvname.c
@@ -0,0 +1,90 @@
+/*
+ * 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 <string.h>
+#include <limits.h>
+#include <sys/types.h>
+#include <svm.h>
+
+/*
+ *	Macros to produce a quoted string containing the value of a
+ *	preprocessor macro. For example, if SIZE is defined to be 256,
+ *	VAL2STR(SIZE) is "256". This is used to construct format
+ *	strings for scanf-family functions below.
+ */
+#define	QUOTE(x)	#x
+#define	VAL2STR(x)	QUOTE(x)
+
+/*
+ * FUNCTION:
+ *	Return the driver name for a major number
+ *
+ * INPUT: major number, mount point for name_to_major file, pointer
+ * to a valid buffer.
+ *
+ * RETURN VALUES:
+ *	0 - SUCCESS - buf contain the driver name.
+ *	-1 - FAIL
+ *
+ */
+
+int
+get_drv_name(major_t major, char *mnt, char *buf)
+{
+	FILE *fp;
+	char drv[FILENAME_MAX + 1];
+	char entry[FILENAME_MAX + 1];
+	char line[MAX_N2M_ALIAS_LINE];
+	char fname[PATH_MAX];
+
+	int status = RET_NOERROR;
+	(void) snprintf(fname, sizeof (fname), "%s%s", mnt, NAME_TO_MAJOR);
+
+	if ((fp = fopen(fname, "r")) == NULL) {
+		return (RET_ERROR);
+	}
+
+	while ((fgets(line, sizeof (line), fp) != NULL) &&
+						status == RET_NOERROR) {
+		if (sscanf(line,
+		    "%" VAL2STR(FILENAME_MAX) "s %" VAL2STR(FILENAME_MAX) "s",
+		    drv, entry) != 2) {
+			status = RET_ERROR;
+		}
+		if (atoi(entry) == major)
+			break;
+
+	}
+
+	if (status == RET_NOERROR)
+		(void) strcpy(buf, drv);
+	(void) fclose(fp);
+	return (status);
+}