Import of pdisk from apple, BSD licensed code. Archive dated Feb 18 1998

This is a HFS partition editing tool.

1 files changed, 180 insertions, 0 deletions

diff --git a/sbin/pdisk/layout_dump.c b/sbin/pdisk/layout_dump.c
new file mode 100644
index 00000000000..9868d844b5b
--- /dev/null
+++ b/sbin/pdisk/layout_dump.c
@@ -0,0 +1,180 @@
+/*
+ * layout_dump.c -
+ *
+ * Written by Eryk Vershen (eryk@apple.com)
+ */
+
+/*
+ * Copyright 1996,1997 by Apple Computer, Inc.
+ *              All Rights Reserved 
+ *  
+ * Permission to use, copy, modify, and distribute this software and 
+ * its documentation for any purpose and without fee is hereby granted, 
+ * provided that the above copyright notice appears in all copies and 
+ * that both the copyright notice and this permission notice appear in 
+ * supporting documentation. 
+ *  
+ * APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE 
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 
+ * FOR A PARTICULAR PURPOSE. 
+ *  
+ * IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR 
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM 
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT, 
+ * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION 
+ * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 
+ */
+
+// for printf()
+#include <stdio.h>
+// for strlen()
+#include <string.h>
+#include "layout_dump.h"
+
+
+/*
+ * Defines
+ */
+
+
+/*
+ * Types
+ */
+
+
+/*
+ * Global Constants
+ */
+unsigned char bitmasks[] = {
+    0x01, 0x03, 0x07, 0x0F,
+    0x1F, 0x3F, 0x7F, 0xFF
+};
+
+
+/*
+ * Global Variables
+ */
+
+
+/*
+ * Forward declarations
+ */
+
+
+/*
+ * Routines
+ */
+void
+dump_using_layout(void *buffer, layout *desc)
+{
+    layout *entry;
+    int byte_length;
+    long    value;
+    int max_name;
+    int i;
+    
+    max_name = 0;
+    for (entry = desc; entry->format != kEnd; entry++) {
+	value = strlen(entry->name);
+	if (value > max_name) {
+	    max_name = value;
+	}
+    }
+    
+    
+    for (entry = desc; entry->format != kEnd; entry++) {
+
+	if (entry->format != kBit) {
+	    printf("%*s: ", max_name, entry->name);
+	
+	    byte_length = entry->bit_length / 8;
+	    
+	    if (entry->bit_offset != 0 || (entry->bit_length % 8) != 0) {
+		printf("entry %d, can't handle bitfields yet.\n", entry - desc);
+		continue;
+	    }
+	    
+	    value = 0;
+	    for (i = entry->byte_offset; byte_length > 0;i++) {
+		value = value << 8;
+		value |= ((unsigned char *)buffer)[i];
+		byte_length--;
+	    }
+	} else {
+	    if (entry->bit_offset < 0 || entry->bit_offset > 8) {
+		printf("entry %d, bad bit offset (%d).\n", entry - desc, entry->bit_offset);
+		continue;
+	    } else if (entry->bit_length <= 0 
+		    || entry->bit_length > (entry->bit_offset + 1)) {
+		printf("entry %d, bad bit length (%d,%d).\n", entry - desc,
+			entry->bit_offset, entry->bit_length);
+		continue;
+	    }
+	    value = (((unsigned char *)buffer)[entry->byte_offset]
+		    & bitmasks[entry->bit_offset])
+		    >> ((entry->bit_offset + 1) - entry->bit_length);
+	}
+	
+	switch (entry->format) {
+	case kHex:
+	    printf("0x%x\n", value);
+	    break;
+	case kDec:
+	    byte_length = entry->bit_length / 8;
+	    switch (byte_length) {
+	    case 4: printf("%d\n", (signed long)value); break;
+	    case 2: printf("%d\n", (signed short)value); break;
+	    case 1: printf("%d\n", (signed char)value); break;
+	    }
+	    break;
+	case kUns:
+	    byte_length = entry->bit_length / 8;
+	    switch (byte_length) {
+	    case 4: printf("%u\n", (unsigned long)value); break;
+	    case 2: printf("%u\n", (unsigned short)value); break;
+	    case 1: printf("%u\n", (unsigned char)value); break;
+	    }
+	    break;
+	case kBit:
+	    if (value) {
+		printf("%*s  %s\n", max_name, "", entry->name);
+	    }
+	    break;
+	default:
+	    printf("entry %d, unknown format (%d).\n", entry - desc, entry->format);
+	    break;
+	}
+    }
+}
+
+
+void
+DumpRawBuffer(unsigned char *bufferPtr, int length )
+{
+	register int            i;
+	int                     lineStart;
+	int                     lineLength;
+	short                   c;
+
+#define kLineSize   16
+	for (lineStart = 0; lineStart < length; lineStart += lineLength) {
+	    lineLength = kLineSize;
+	    if (lineStart + lineLength > length)
+		lineLength = length - lineStart;
+	    printf("%03x %3d:", lineStart, lineStart);
+	    for (i = 0; i < lineLength; i++)
+		printf(" %02x", bufferPtr[lineStart + i] & 0xFF);
+	    for (; i < kLineSize; i++)
+		printf("   ");
+	    printf("  ");
+	    for (i = 0; i < lineLength; i++) {
+		c = bufferPtr[lineStart + i] & 0xFF;
+		if (c > ' ' && c < '~')
+		    printf("%c", c);
+		else {
+		    printf(".");
+		}
+	    }
+	    printf("\n");
+	}
+}