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0.7.2 release, includes new Linux type code & true GUID generation in

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Windows
This commit is contained in:
srs5694
2011-06-26 22:40:06 -04:00
parent 6aae2a9b70
commit 00b6d7a460
23 changed files with 208 additions and 660 deletions
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31
guid.cc
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@@ -128,20 +128,35 @@ void GUIDData::Zero(void) {
// Set a completely random GUID value....
// The uuid_generate() function returns a value that needs to have its
// first three fields byte-reversed to conform to Intel's GUID layout.
// If that function isn't defined (e.g., on Windows), set a completely
// random GUID -- not completely kosher, but it doesn't seem to cause
// any problems (so far...)
// The Windows UuidCreate() function doesn't need this adjustment. If
// neither function is defined, or if UuidCreate() fails, set a completely
// random GUID -- not completely kosher, but it works on most platforms
// (immediately after creating the UUID on Windows 7 being an important
// exception).
void GUIDData::Randomize(void) {
int i, uuidGenerated = 0;
#ifdef _UUID_UUID_H
uuid_generate(uuidData);
ReverseBytes(&uuidData[0], 4);
ReverseBytes(&uuidData[4], 2);
ReverseBytes(&uuidData[6], 2);
#else
int i;
for (i = 0; i < 16; i++)
uuidData[i] = (unsigned char) (256.0 * (rand() / (RAND_MAX + 1.0)));
uuidGenerated = 1;
#endif
#if defined (_RPC_H) || defined (__RPC_H__)
UUID MsUuid;
if (UuidCreate(&MsUuid) == RPC_S_OK) {
memcpy(uuidData, &MsUuid, 16);
uuidGenerated = 1;
} // if
#endif
if (!uuidGenerated) {
cerr << "Warning! Unable to generate a proper UUID! Creating an improper one as a last\n"
<< "resort! Windows 7 may crash if you save this partition table!\a\n";
for (i = 0; i < 16; i++)
uuidData[i] = (unsigned char) (256.0 * (rand() / (RAND_MAX + 1.0)));
} // if
} // GUIDData::Randomize
// Equality operator; returns 1 if the GUIDs are equal, 0 if they're unequal
@@ -194,4 +209,4 @@ ostream & operator<<(ostream & os, const GUIDData & data) {
os << data.AsString();
return os;
} // GUIDData::operator<<()
} // GUIDData::operator<<()