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// attributes.cc
// Class to manage partition attribute codes. These are binary bit fields,
// of which only three are currently (2/2009) documented on Wikipedia.
#define __STDC_LIMIT_MACROS
#define __STDC_CONSTANT_MACROS
#include <string.h>
#include <stdint.h>
#include <stdio.h>
#include "attributes.h"
using namespace std;
// Constructor. Its main task is to initialize the attribute name
// data.
Attributes::Attributes(void) {
int i;
char temp[ATR_NAME_SIZE];
// Most bits are undefined, so start by giving them an
// appropriate name
for (i = 1; i < NUM_ATR; i++) {
sprintf(temp, "Undefined bit #%d", i);
strcpy(atNames[i], temp);
} // for
// Now reset those names that are defined....
strcpy(atNames[0], "system partition");
strcpy(atNames[60], "read-only");
strcpy(atNames[62], "hidden");
strcpy(atNames[63], "do not automount");
} // Attributes constructor
// Destructor.
Attributes::~Attributes(void) {
} // Attributes destructor
// Display current attributes to user
void Attributes::DisplayAttributes(void) {
int i;
printf("Attribute value is %llX. Set fields are:\n",
(unsigned long long) attributes);
for (i = 0; i < NUM_ATR; i++) {
if (((attributes >> i) % 2) == 1) { // bit is set
/* if (strncmp("Undefined", atNames[i], 9) != 0)
printf("%s\n", atNames[i]); */
if (strncmp("Undefined", atNames[NUM_ATR - i - 1], 9) != 0)
printf("%s\n", atNames[NUM_ATR - i - 1]);
} // if
} // for
} // Attributes::DisplayAttributes()
// Prompt user for attribute changes
void Attributes::ChangeAttributes(void) {
int response, i;
uint64_t bitValue;
printf("Known attributes are:\n");
for (i = 0; i < NUM_ATR; i++) {
if (strncmp("Undefined", atNames[i], 9) != 0)
printf("%d - %s\n", i, atNames[i]);
} // for
do {
response = GetNumber(0, 64, -1, "Toggle which attribute field (0-63, 64 to exit): ");
if (response != 64) {
bitValue = PowerOf2(NUM_ATR - response - 1); // Find the integer value of the bit
// bitValue = PowerOf2(response); // Find the integer value of the bit
if ((bitValue & attributes) == bitValue) { // bit is set
attributes -= bitValue; // so unset it
printf("Have disabled the '%s' attribute.\n", atNames[response]);
} else { // bit is not set
attributes += bitValue; // so set it
printf("Have enabled the '%s' attribute.\n", atNames[response]);
} // if/else
} // if
} while (response != 64);
} // Attributes::ChangeAttributes()
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