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driver: add checks for ifs reparse point tests

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Signed-off-by: Casey Bodley <cbodley@citi.umich.edu>
This commit is contained in:
Casey Bodley 2012-03-21 14:16:38 -04:00 • committed by unknown
parent 4bfb05adac
commit 7a8861699f
1 changed files with 33 additions and 3 deletions
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36
sys/nfs41_driver.c
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@ -5820,18 +5820,44 @@ NTSTATUS nfs41_SetReparsePoint(
NFS41GetVNetRootExtension(SrvOpen->pVNetRoot);
__notnull PNFS41_NETROOT_EXTENSION pNetRootContext =
NFS41GetNetRootExtension(SrvOpen->pVNetRoot->pNetRoot);
const ULONG HeaderLen = REPARSE_DATA_BUFFER_HEADER_SIZE;
nfs41_updowncall_entry *entry;
#ifdef DEBUG_SYMLINK
DbgEn();
print_reparse_buffer(Reparse);
#endif
if (!Reparse) {
status = STATUS_INVALID_PARAMETER;
/* access checks */
if (VNetRoot->read_only) {
status = STATUS_MEDIA_WRITE_PROTECTED;
goto out;
}
if (!(SrvOpen->DesiredAccess & (FILE_WRITE_DATA|FILE_WRITE_ATTRIBUTES))) {
status = STATUS_ACCESS_DENIED;
goto out;
}
/* validate input buffer and length */
if (!Reparse) {
status = STATUS_INVALID_BUFFER_SIZE;
goto out;
}
if (FsCtl->InputBufferLength < HeaderLen ||
FsCtl->InputBufferLength > MAXIMUM_REPARSE_DATA_BUFFER_SIZE) {
status = STATUS_IO_REPARSE_DATA_INVALID;
goto out;
}
if (FsCtl->InputBufferLength != HeaderLen + Reparse->ReparseDataLength) {
status = STATUS_IO_REPARSE_DATA_INVALID;
goto out;
}
/* validate reparse tag */
if (!IsReparseTagValid(Reparse->ReparseTag)) {
status = STATUS_IO_REPARSE_TAG_INVALID;
goto out;
}
if (Reparse->ReparseTag != IO_REPARSE_TAG_SYMLINK) {
status = STATUS_IO_REPARSE_TAG_MISMATCH;
goto out;
@ -5883,6 +5909,10 @@ NTSTATUS nfs41_GetReparsePoint(
DbgEn();
#endif
if (!FsCtl->pOutputBuffer) {
status = STATUS_INVALID_USER_BUFFER;
goto out;
}
if (!BooleanFlagOn(RxContext->pFcb->Attributes,
FILE_ATTRIBUTE_REPARSE_POINT)) {
status = STATUS_NOT_A_REPARSE_POINT;