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Implement Qualcomm Sahara VIP and fix a few bugs

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* Qualcomm Sahara VIP
* Project Cleanup
* Allow unlocking an already unlocked phone
This commit is contained in:
Gustave Monce
2021-08-11 14:33:49 +02:00
parent 9f4c92f437
commit c5fcb1ec8d
72 changed files with 987 additions and 861 deletions
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DiscUtils/DiscUtils.Fat/ClusterStream.cs
+13 -20
View File
@@ -194,8 +194,7 @@ namespace DiscUtils.Fat
if (desiredNumClusters < actualNumClusters)
{
uint cluster;
if (!TryGetClusterByPosition(value, out cluster))
if (!TryGetClusterByPosition(value, out uint cluster))
{
throw new IOException("Internal state corrupt - unable to find cluster");
}
@@ -218,8 +217,7 @@ namespace DiscUtils.Fat
}
else if (desiredNumClusters > actualNumClusters)
{
uint cluster;
while (!TryGetClusterByPosition(value, out cluster))
while (!TryGetClusterByPosition(value, out uint cluster))
{
cluster = ExtendChain();
_reader.WipeCluster(cluster);
@@ -314,7 +312,7 @@ namespace DiscUtils.Fat
// Partial cluster, so need to read existing cluster data first
LoadCluster(cluster);
int copyLength = Math.Min(count, _reader.ClusterSize - pos % _reader.ClusterSize);
int copyLength = Math.Min(count, _reader.ClusterSize - (pos % _reader.ClusterSize));
Array.Copy(buffer, offset, _clusterBuffer, pos, copyLength);
WriteCurrentCluster();
@@ -331,13 +329,12 @@ namespace DiscUtils.Fat
private uint ExtendChain()
{
// Sanity check - make sure the final known cluster is the EOC marker
if (!_fat.IsEndOfChain(_knownClusters[_knownClusters.Count - 1]))
if (!_fat.IsEndOfChain(_knownClusters[^1]))
{
throw new IOException("Corrupt file system: final cluster isn't End-of-Chain");
}
uint cluster;
if (!_fat.TryGetFreeCluster(out cluster))
if (!_fat.TryGetFreeCluster(out uint cluster))
{
throw new IOException("Out of disk space");
}
@@ -349,10 +346,10 @@ namespace DiscUtils.Fat
}
else
{
_fat.SetNext(_knownClusters[_knownClusters.Count - 2], cluster);
_fat.SetNext(_knownClusters[^2], cluster);
}
_knownClusters[_knownClusters.Count - 1] = cluster;
_knownClusters[^1] = cluster;
_knownClusters.Add(_fat.GetNext(cluster));
return cluster;
@@ -373,8 +370,7 @@ namespace DiscUtils.Fat
private bool TryLoadClusterByPosition(long pos)
{
uint cluster;
if (!TryGetClusterByPosition(pos, out cluster))
if (!TryGetClusterByPosition(pos, out uint cluster))
{
return false;
}
@@ -408,13 +404,10 @@ namespace DiscUtils.Fat
{
int index = (int)(pos / _reader.ClusterSize);
if (_knownClusters.Count <= index)
if (_knownClusters.Count <= index && !TryPopulateKnownClusters(index))
{
if (!TryPopulateKnownClusters(index))
{
cluster = uint.MaxValue;
return false;
}
cluster = uint.MaxValue;
return false;
}
// Chain is shorter than the current stream position
@@ -438,7 +431,7 @@ namespace DiscUtils.Fat
private bool TryPopulateKnownClusters(int index)
{
uint lastKnown = _knownClusters[_knownClusters.Count - 1];
uint lastKnown = _knownClusters[^1];
while (!_fat.IsEndOfChain(lastKnown) && _knownClusters.Count <= index)
{
lastKnown = _fat.GetNext(lastKnown);
@@ -450,7 +443,7 @@ namespace DiscUtils.Fat
private uint DetectLength()
{
while (!_fat.IsEndOfChain(_knownClusters[_knownClusters.Count - 1]))
while (!_fat.IsEndOfChain(_knownClusters[^1]))
{
if (!TryPopulateKnownClusters(_knownClusters.Count))
{