private bool ValidateMount(IMount mount, LocationData location)
{
// Mount can be invalid if it is not specified properly in the DScript configuration.
// For example, one can specify 'undefined' for mount's name or path. The undefined value gets
// translated into invalid value by ConfigurationConverter.
if (!mount.Name.IsValid)
{
Events.LogWithProvenance(
m_loggingContext,
Logger.Log.MountHasInvalidName,
m_context.PathTable,
location);
return(false);
}
if (!mount.Path.IsValid)
{
Events.LogWithProvenance(
m_loggingContext,
Logger.Log.MountHasInvalidPath,
m_context.PathTable,
location,
mount.Name.ToString(m_context.StringTable));
return(false);
}
return(true);
}
private void LogRelatedMountError(RelatedMountLogEventError logEvent, IMount childMount, IMount parentMount)
{
logEvent(
m_loggingContext,
childMount.Location.Path.ToString(m_context.PathTable),
childMount.Location.Line,
childMount.Location.Position,
childMount.Name.ToString(m_context.StringTable),
childMount.Path.ToString(m_context.PathTable),
parentMount.Name.ToString(m_context.StringTable),
parentMount.Path.ToString(m_context.PathTable));
Events.LogRelatedLocation(
m_loggingContext,
Logger.Log.ErrorRelatedLocation,
m_context.PathTable,
parentMount.Location,
childMount.Location);
}
/// <summary>
/// Adds a resolved mount as found by parsing the configuration file.
/// </summary>
public void AddResolvedMount(IMount mount, LocationData?mountLocation = null)
{
var location = mountLocation ?? mount.Location;
if (!ValidateMount(mount, location))
{
m_mountAdditionError = true;
return;
}
if (!VerifyMountAgainstParentMounts(mount))
{
m_mountAdditionError = true;
return;
}
if (m_mountPathIdentifiersByMount.TryAdd(mount, mount.Name))
{
string mountName = mount.Name.ToString(m_context.StringTable);
m_mountsByName[mountName] = mount;
m_mountMapBuilder[mount.Path] = mount;
}
}
/// <inheritdoc />
public override BuildXL.FrontEnd.Sdk.TryGetMountResult TryGetMount(string name, ModuleId currentPackage, out IMount mount)
{
Contract.Requires(currentPackage.IsValid);
if (string.IsNullOrEmpty(name))
{
mount = null;
return(BuildXL.FrontEnd.Sdk.TryGetMountResult.NameNullOrEmpty);
}
return(m_mountsByName.TryGetValue(name, out mount)
? BuildXL.FrontEnd.Sdk.TryGetMountResult.Success
: BuildXL.FrontEnd.Sdk.TryGetMountResult.NameNotFound);
}
private bool VerifyMountAgainstParentMounts(IMount childMount)
{
if (m_parent == null)
{
return(true);
}
string mountName = childMount.Name.ToString(m_context.StringTable);
IMount parentMount;
if (m_parent.m_mountsByName.TryGetValue(mountName, out parentMount))
{
if (parentMount.Path != childMount.Path)
{
LogRelatedMountError(
Logger.Log.ModuleMountsWithSameNameAsConfigMountsMustHaveSamePath,
childMount: childMount,
parentMount: parentMount);
return(false);
}
}
if (m_parent.m_mountMapBuilder.TryGetValue(childMount.Path, out parentMount))
{
if (!parentMount.Name.CaseInsensitiveEquals(m_context.StringTable, childMount.Name))
{
LogRelatedMountError(
Logger.Log.ModuleMountsWithSamePathAsConfigMountsMustHaveSameName,
childMount: childMount,
parentMount: parentMount);
return(false);
}
}
var parentMountInfo = m_parent.MountPathExpander.GetSemanticPathInfo(childMount.Path);
if (parentMountInfo.IsValid)
{
parentMount = m_parent.m_mountMapBuilder[parentMountInfo.Root];
if (!parentMountInfo.IsWritable && childMount.IsWritable)
{
LogRelatedMountError(
Logger.Log.NonWritableConfigMountsMayNotContainWritableModuleMounts,
childMount: childMount,
parentMount: parentMount);
return(false);
}
if (!parentMountInfo.IsReadable && childMount.IsReadable)
{
LogRelatedMountError(
Logger.Log.NonReadableConfigMountsMayNotContainReadableModuleMounts,
childMount: childMount,
parentMount: parentMount);
return(false);
}
if (parentMountInfo.IsScrubbable && !childMount.IsScrubbable)
{
LogRelatedMountError(
Logger.Log.ScrubbableMountsMayOnlyContainScrubbableMounts,
childMount: childMount,
parentMount: parentMount);
return(false);
}
}
return(true);
}