1 files changed, 75 insertions, 0 deletions
diff --git a/diskdev_cmds/disklib/dksecsize.c b/diskdev_cmds/disklib/dksecsize.c
new file mode 100644
index 0000000..0cfad82
--- /dev/null
+++ b/diskdev_cmds/disklib/dksecsize.c
@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_LICENSE_HEADER_END@
+ */
+/* Copyright 1998 Apple Computer, Inc.
+ *
+ * Get disk label's sector size  routine.
+ *    Input: pointer to a block device string  ie: "/dev/disk1s1"
+ *    Return: sector size from the disk label
+ *
+ * HISTORY
+ *
+ * 27 May 1998 K. Crippes at Apple
+ *      Rhapsody version created.
+ * 18 Feb 1999 D. Markarian at Apple
+ *      DKIOCGLABEL deprecated;  using DKIOCBLKSIZE instead, which now returns
+ *      the appropriate size for ufs partitions created with wierd block sizes.
+ */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/disk.h>
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+char *blockcheck __P((char *));
+
+long dksecsize (dev)
+     char *dev;
+{
+    int    fd;        /* file descriptor for reading device label */
+    char   *cdev;
+    int    devblklen;
+    extern int errno;
+
+    /* Convert block device into a character device string */
+    if ((cdev = blockcheck(dev))) {
+        if ((fd = open(cdev, O_RDONLY)) < 0) {
+  	  fprintf(stderr, "Can't open %s, %s\n", cdev, strerror(errno));
+	  return (0);
+        }
+    }
+    else
+          return (0);
+
+    if (ioctl(fd, DKIOCGETBLOCKSIZE, &devblklen) < 0) {
+	(void)close(fd);
+        return (0);
+    }
+    else {
+	(void)close(fd);
+        return (devblklen);
+    }
+}
+