221e08768d
This version adds support for FreeBSD and big-endian systems. It also adds support for BSD disklabels and an assortment of other changes, improvements, and bug fixes.
85 lines
2.7 KiB
C++
85 lines
2.7 KiB
C++
// attributes.cc
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// Class to manage partition attribute codes. These are binary bit fields,
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// of which only three are currently (2/2009) documented on Wikipedia.
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/* This program is copyright (c) 2009 by Roderick W. Smith. It is distributed
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under the terms of the GNU GPL version 2, as detailed in the COPYING file. */
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#define __STDC_LIMIT_MACROS
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#define __STDC_CONSTANT_MACROS
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#include <string.h>
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#include <stdint.h>
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#include <stdio.h>
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#include "attributes.h"
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using namespace std;
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// Constructor. Its main task is to initialize the attribute name
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// data.
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Attributes::Attributes(void) {
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int i;
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char temp[ATR_NAME_SIZE];
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// Most bits are undefined, so start by giving them an
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// appropriate name
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for (i = 1; i < NUM_ATR; i++) {
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sprintf(temp, "Undefined bit #%d", i);
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strcpy(atNames[i], temp);
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} // for
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// Now reset those names that are defined....
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strcpy(atNames[0], "system partition");
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strcpy(atNames[60], "read-only");
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strcpy(atNames[62], "hidden");
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strcpy(atNames[63], "do not automount");
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} // Attributes constructor
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// Destructor.
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Attributes::~Attributes(void) {
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} // Attributes destructor
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// Display current attributes to user
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void Attributes::DisplayAttributes(void) {
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int i;
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printf("Attribute value is %llX. Set fields are:\n",
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(unsigned long long) attributes);
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for (i = 0; i < NUM_ATR; i++) {
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if (((attributes >> i) % 2) == 1) { // bit is set
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/* if (strncmp("Undefined", atNames[i], 9) != 0)
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printf("%s\n", atNames[i]); */
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if (strncmp("Undefined", atNames[NUM_ATR - i - 1], 9) != 0)
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printf("%s\n", atNames[NUM_ATR - i - 1]);
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} // if
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} // for
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} // Attributes::DisplayAttributes()
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// Prompt user for attribute changes
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void Attributes::ChangeAttributes(void) {
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int response, i;
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uint64_t bitValue;
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printf("Known attributes are:\n");
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for (i = 0; i < NUM_ATR; i++) {
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if (strncmp("Undefined", atNames[i], 9) != 0)
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printf("%d - %s\n", i, atNames[i]);
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} // for
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do {
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response = GetNumber(0, 64, -1, "Toggle which attribute field (0-63, 64 to exit): ");
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if (response != 64) {
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bitValue = PowerOf2(NUM_ATR - response - 1); // Find the integer value of the bit
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// bitValue = PowerOf2(response); // Find the integer value of the bit
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if ((bitValue & attributes) == bitValue) { // bit is set
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attributes -= bitValue; // so unset it
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printf("Have disabled the '%s' attribute.\n", atNames[response]);
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} else { // bit is not set
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attributes += bitValue; // so set it
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printf("Have enabled the '%s' attribute.\n", atNames[response]);
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} // if/else
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} // if
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} while (response != 64);
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} // Attributes::ChangeAttributes()
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