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src: dotnet: FileSystemBase.ModifySecurityDescriptor

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This commit is contained in:
Bill Zissimopoulos 2017-05-08 21:25:03 -07:00
parent c4530f1252
commit 0af9e46e76
2 changed files with 62 additions and 9 deletions
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19
src/dotnet/FileSystemBase.cs
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@ -366,6 +366,25 @@ namespace Fsp
{
return Api.FspWin32FromNtStatus(Status);
}
public static byte[] ModifySecurityDescriptor(
Byte[] SecurityDescriptor,
AccessControlSections Sections,
Byte[] ModificationDescriptor)
{
UInt32 SecurityInformation = 0;
if (0 != (Sections & AccessControlSections.Owner))
SecurityInformation |= 1/*OWNER_SECURITY_INFORMATION*/;
if (0 != (Sections & AccessControlSections.Group))
SecurityInformation |= 2/*GROUP_SECURITY_INFORMATION*/;
if (0 != (Sections & AccessControlSections.Access))
SecurityInformation |= 4/*DACL_SECURITY_INFORMATION*/;
if (0 != (Sections & AccessControlSections.Audit))
SecurityInformation |= 8/*SACL_SECURITY_INFORMATION*/;
return Api.ModifySecurityDescriptor(
SecurityDescriptor,
SecurityInformation,
ModificationDescriptor);
}
public Int32 SeekableReadDirectory(
Object FileNode,
Object FileDesc,

50
src/dotnet/Interop.cs
View File

@ -546,6 +546,16 @@ namespace Fsp.Interop
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate void FspFileSystemDeleteDirectoryBuffer(
ref IntPtr PDirBuffer);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate Int32 FspSetSecurityDescriptor(
IntPtr InputDescriptor,
UInt32 SecurityInformation,
IntPtr ModificationDescriptor,
out IntPtr PSecurityDescriptor);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
internal delegate void FspDeleteSecurityDescriptor(
IntPtr SecurityDescriptor,
IntPtr CreateFunc);
/* Service */
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
@ -650,6 +660,9 @@ namespace Fsp.Interop
internal static Proto.FspFileSystemReleaseDirectoryBuffer FspFileSystemReleaseDirectoryBuffer;
internal static Proto.FspFileSystemReadDirectoryBuffer FspFileSystemReadDirectoryBuffer;
internal static Proto.FspFileSystemDeleteDirectoryBuffer FspFileSystemDeleteDirectoryBuffer;
internal static Proto.FspSetSecurityDescriptor FspSetSecurityDescriptor;
internal static IntPtr _FspSetSecurityDescriptorPtr;
internal static Proto.FspDeleteSecurityDescriptor FspDeleteSecurityDescriptor;
internal static Proto.FspServiceCreate FspServiceCreate;
internal static Proto.FspServiceDelete FspServiceDelete;
internal static Proto.FspServiceAllowConsoleMode FspServiceAllowConsoleMode;
@ -816,6 +829,24 @@ namespace Fsp.Interop
else
return null;
}
internal unsafe static byte[] ModifySecurityDescriptor(
Byte[] SecurityDescriptorBytes,
UInt32 SecurityInformation,
Byte[] ModificationDescriptorBytes)
{
fixed (Byte *S = SecurityDescriptorBytes)
fixed (Byte *M = ModificationDescriptorBytes)
{
IntPtr SecurityDescriptor;
Int32 Result = FspSetSecurityDescriptor(
(IntPtr)S, SecurityInformation, (IntPtr)M, out SecurityDescriptor);
if (0 > Result)
return null;
SecurityDescriptorBytes = MakeSecurityDescriptor(SecurityDescriptor);
FspDeleteSecurityDescriptor(SecurityDescriptor, _FspSetSecurityDescriptorPtr);
return SecurityDescriptorBytes;
}
}
internal unsafe static Int32 CopyReparsePoint(
Byte[] ReparseData,
@ -903,17 +934,17 @@ namespace Fsp.Interop
}
return Module;
}
private static IntPtr GetEntryPointPtr(IntPtr Module, String Name)
{
IntPtr Proc = GetProcAddress(Module, Name);
if (IntPtr.Zero == Proc)
throw new EntryPointNotFoundException("cannot get entry point " + Name);
return Proc;
}
private static T GetEntryPoint<T>(IntPtr Module)
{
try
{
return (T)(object)Marshal.GetDelegateForFunctionPointer(
GetProcAddress(Module, typeof(T).Name), typeof(T));
}
catch (ArgumentNullException)
{
throw new EntryPointNotFoundException("cannot get entry point " + typeof(T).Name);
}
GetEntryPointPtr(Module, typeof(T).Name), typeof(T));
}
private static void LoadProto(IntPtr Module)
{
@ -938,6 +969,9 @@ namespace Fsp.Interop
FspFileSystemReleaseDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemReleaseDirectoryBuffer>(Module);
FspFileSystemReadDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemReadDirectoryBuffer>(Module);
FspFileSystemDeleteDirectoryBuffer = GetEntryPoint<Proto.FspFileSystemDeleteDirectoryBuffer>(Module);
FspSetSecurityDescriptor = GetEntryPoint<Proto.FspSetSecurityDescriptor>(Module);
_FspSetSecurityDescriptorPtr = GetEntryPointPtr(Module, "FspSetSecurityDescriptor");
FspDeleteSecurityDescriptor = GetEntryPoint<Proto.FspDeleteSecurityDescriptor>(Module);
FspServiceCreate = GetEntryPoint<Proto.FspServiceCreate>(Module);
FspServiceDelete = GetEntryPoint<Proto.FspServiceDelete>(Module);
FspServiceAllowConsoleMode = GetEntryPoint<Proto.FspServiceAllowConsoleMode>(Module);