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dll, sys: FSP_NEXT_EA

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This commit is contained in:
Bill Zissimopoulos 2019-03-14 22:04:31 -07:00
parent d59976bd5d
commit d3efdd9219
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GPG Key ID: 3D4F95D52C7B3EA3
5 changed files with 20 additions and 30 deletions
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11
src/dll/fsop.c
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@ -1805,19 +1805,14 @@ FSP_API NTSTATUS FspFileSystemEnumerateEa(FSP_FILE_SYSTEM *FileSystem,
PVOID Context, PVOID Context,
PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength) PFILE_FULL_EA_INFORMATION Ea, ULONG EaLength)
{ {
PFILE_FULL_EA_INFORMATION EaEnd = (PVOID)((PUINT8)Ea + EaLength); NTSTATUS Result = STATUS_SUCCESS;
NTSTATUS Result; for (PFILE_FULL_EA_INFORMATION EaEnd = (PVOID)((PUINT8)Ea + EaLength);
EaEnd > Ea; FSP_NEXT_EA(Ea, EaEnd))
Result = STATUS_SUCCESS;
for (;
EaEnd > Ea && 0 != Ea->NextEntryOffset;
Ea = (PVOID)((PUINT8)Ea + Ea->NextEntryOffset))
{ {
Result = EnumerateEa(FileSystem, Context, Ea); Result = EnumerateEa(FileSystem, Context, Ea);
if (!NT_SUCCESS(Result)) if (!NT_SUCCESS(Result))
break; break;
} }
return Result; return Result;
} }

3
src/dll/library.h
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@ -92,4 +92,7 @@ static inline BOOLEAN FspPathIsDrive(PWSTR FileName)
L':' == FileName[1] && L'\0' == FileName[2]; L':' == FileName[1] && L'\0' == FileName[2];
} }
#define FSP_NEXT_EA(Ea, EaEnd) \
(0 != (Ea)->NextEntryOffset ? (PVOID)((PUINT8)(Ea) + (Ea)->NextEntryOffset) : (EaEnd))
#endif #endif

7
src/dotnet/Interop.cs
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@ -908,9 +908,10 @@ namespace Fsp.Interop
FullEaInformation *EndP = (FullEaInformation *)(Ea.ToInt64() + EaLength); FullEaInformation *EndP = (FullEaInformation *)(Ea.ToInt64() + EaLength);
Int32 Result; Int32 Result;
Result = 0/*STATUS_SUCCESS*/; Result = 0/*STATUS_SUCCESS*/;
for (; for (; EndP > P;
EndP > P && 0 != P->NextEntryOffset; P = 0 != P->NextEntryOffset ?
P = (FullEaInformation *)(((IntPtr)P).ToInt64() + P->NextEntryOffset)) (FullEaInformation *)(((IntPtr)P).ToInt64() + P->NextEntryOffset) :
EndP)
{ {
String EaName = Marshal.PtrToStringAnsi((IntPtr)P->EaName, P->EaNameLength); String EaName = Marshal.PtrToStringAnsi((IntPtr)P->EaName, P->EaNameLength);
Byte[] EaValue = new Byte[P->EaValueLength]; Byte[] EaValue = new Byte[P->EaValueLength];

2
src/sys/driver.h
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@ -573,6 +573,8 @@ NTSTATUS FspOplockFsctrl(
FspNotifyFullChangeDirectory(NS, NL, FC, 0, 0, FALSE, 0, 0, 0, 0) FspNotifyFullChangeDirectory(NS, NL, FC, 0, 0, FALSE, 0, 0, 0, 0)
#define FspNotifyReportChange(NS, NL, FN, FO, NP, F, A)\ #define FspNotifyReportChange(NS, NL, FN, FO, NP, F, A)\
FspNotifyFullReportChange(NS, NL, (PSTRING)(FN), FO, 0, (PSTRING)(NP), F, A, 0) FspNotifyFullReportChange(NS, NL, (PSTRING)(FN), FO, 0, (PSTRING)(NP), F, A, 0)
#define FSP_NEXT_EA(Ea, EaEnd) \
(0 != (Ea)->NextEntryOffset ? (PVOID)((PUINT8)(Ea) + (Ea)->NextEntryOffset) : (EaEnd))
/* utility: synchronous work queue */ /* utility: synchronous work queue */
typedef struct typedef struct

27
src/sys/ea.c
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@ -97,17 +97,13 @@ static VOID FspFsvolQueryEaGetCopy(
IoStatus->Status = STATUS_SUCCESS; IoStatus->Status = STATUS_SUCCESS;
IoStatus->Information = 0; IoStatus->Information = 0;
DstBuf = DstBufBgn, PrevDstBuf = 0; DstBuf = DstBufBgn, PrevDstBuf = 0;
for (GetBuf = GetBufBgn; for (GetBuf = GetBufBgn; GetBufEnd > GetBuf; GetBuf = FSP_NEXT_EA(GetBuf, GetBufEnd))
GetBufEnd > GetBuf && 0 != GetBuf->NextEntryOffset;
GetBuf = (PVOID)((PUINT8)GetBuf + GetBuf->NextEntryOffset))
{ {
GetName.Length = GetName.MaximumLength = GetBuf->EaNameLength; GetName.Length = GetName.MaximumLength = GetBuf->EaNameLength;
GetName.Buffer = GetBuf->EaName; GetName.Buffer = GetBuf->EaName;
/* ignore duplicate names */ /* ignore duplicate names */
for (Get = GetBufBgn; for (Get = GetBufBgn; GetBuf > Get; Get = (PVOID)((PUINT8)Get + Get->NextEntryOffset))
GetBuf > Get;
Get = (PVOID)((PUINT8)Get + Get->NextEntryOffset))
{ {
Name.Length = Name.MaximumLength = Get->EaNameLength; Name.Length = Name.MaximumLength = Get->EaNameLength;
Name.Buffer = Get->EaName; Name.Buffer = Get->EaName;
@ -126,9 +122,7 @@ static VOID FspFsvolQueryEaGetCopy(
} }
Src = GetBuf; Src = GetBuf;
for (SrcBuf = SrcBufBgn; for (SrcBuf = SrcBufBgn; SrcBufEnd > SrcBuf; SrcBuf = FSP_NEXT_EA(SrcBuf, SrcBufEnd))
SrcBufEnd > SrcBuf && 0 != SrcBuf->NextEntryOffset;
SrcBuf = (PVOID)((PUINT8)SrcBuf + SrcBuf->NextEntryOffset))
{ {
Name.Length = Name.MaximumLength = SrcBuf->EaNameLength; Name.Length = Name.MaximumLength = SrcBuf->EaNameLength;
Name.Buffer = SrcBuf->EaName; Name.Buffer = SrcBuf->EaName;
@ -201,18 +195,14 @@ static VOID FspFsvolQueryEaIndexCopy(
return; return;
} }
for (SrcBuf = SrcBufBgn; for (SrcBuf = SrcBufBgn; EaIndex < *PEaIndex && SrcBufEnd > SrcBuf;
EaIndex < *PEaIndex && SrcBuf = FSP_NEXT_EA(SrcBuf, SrcBufEnd), EaIndex++)
SrcBufEnd > SrcBuf && 0 != SrcBuf->NextEntryOffset;
SrcBuf = (PVOID)((PUINT8)SrcBuf + SrcBuf->NextEntryOffset), EaIndex++)
; ;
IoStatus->Status = STATUS_SUCCESS; IoStatus->Status = STATUS_SUCCESS;
IoStatus->Information = 0; IoStatus->Information = 0;
DstBuf = DstBufBgn, PrevDstBuf = 0; DstBuf = DstBufBgn, PrevDstBuf = 0;
for (; for (; SrcBufEnd > SrcBuf; SrcBuf = FSP_NEXT_EA(SrcBuf, SrcBufEnd), EaIndex++)
SrcBufEnd > SrcBuf && 0 != SrcBuf->NextEntryOffset;
SrcBuf = (PVOID)((PUINT8)SrcBuf + SrcBuf->NextEntryOffset), EaIndex++)
{ {
if ((PUINT8)DstBuf + FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) > (PUINT8)DstBufEnd) if ((PUINT8)DstBuf + FIELD_OFFSET(FILE_FULL_EA_INFORMATION, EaName) > (PUINT8)DstBufEnd)
break; break;
@ -256,7 +246,7 @@ static VOID FspFsvolQueryEaIndexCopy(
if (SrcBufBgn == SrcBuf) if (SrcBufBgn == SrcBuf)
IoStatus->Status = IndexSpecified ? IoStatus->Status = IndexSpecified ?
STATUS_NONEXISTENT_EA_ENTRY : STATUS_NO_EAS_ON_FILE; STATUS_NONEXISTENT_EA_ENTRY : STATUS_NO_EAS_ON_FILE;
else if (SrcBufEnd > SrcBuf && 0 != SrcBuf->NextEntryOffset) else if (SrcBufEnd > SrcBuf)
IoStatus->Status = STATUS_BUFFER_TOO_SMALL; IoStatus->Status = STATUS_BUFFER_TOO_SMALL;
else else
IoStatus->Status = IndexSpecified && *PEaIndex != EaIndex ? IoStatus->Status = IndexSpecified && *PEaIndex != EaIndex ?
@ -503,8 +493,7 @@ static NTSTATUS FspFsvolSetEa(
return Result; return Result;
for (PFILE_FULL_EA_INFORMATION Ea = Buffer, EaEnd = (PVOID)((PUINT8)Ea + Length); for (PFILE_FULL_EA_INFORMATION Ea = Buffer, EaEnd = (PVOID)((PUINT8)Ea + Length);
EaEnd > Ea && 0 != Ea->NextEntryOffset; EaEnd > Ea; Ea = FSP_NEXT_EA(Ea, EaEnd))
Ea = (PVOID)((PUINT8)Ea + Ea->NextEntryOffset))
{ {
STRING Name; STRING Name;