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only attach to the process to be queried when necessary

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svn path=/trunk/; revision=13421
This commit is contained in:
Thomas Bluemel 2005-02-05 10:31:37 +00:00
parent 7cd9c86676
commit bb766d5404
2 changed files with 10 additions and 6 deletions
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4
reactos/ntoskrnl/ke/spinlock.c
View file

@ -195,9 +195,7 @@ KiAcquireSpinLock(PKSPIN_LOCK SpinLock)
:
: "r" (SpinLock));
#else
while (0 != *(volatile PKSPIN_LOCK)SpinLock)
{
}
while (0 != *(volatile KSPIN_LOCK*)SpinLock);
#endif
#else
DbgPrint("Spinning on spinlock %x current value %x\n", SpinLock, i);

12
reactos/ntoskrnl/ps/process.c
View file

@ -1613,11 +1613,15 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
{
PRTL_USER_PROCESS_PARAMETERS ProcParams = NULL;
UNICODE_STRING LocalDest;
BOOLEAN Attached;
ULONG ImagePathLen = 0;
PUNICODE_STRING DstPath = (PUNICODE_STRING)ProcessInformation;
/* we need to attach to the process to make sure we're in the right context! */
KeAttachProcess(&Process->Pcb);
Attached = Process != PsGetCurrentProcess();
if(Attached)
KeAttachProcess(&Process->Pcb);
_SEH_TRY
{
@ -1677,7 +1681,8 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
_SEH_END;
/* detach from the process */
KeDetachProcess();
if(Attached)
KeDetachProcess();
/* only copy the string back to the caller if we were able to
copy it into the temporary buffer! */
@ -1715,7 +1720,8 @@ NtQueryInformationProcess(IN HANDLE ProcessHandle,
}
/* don't forget to detach from the process!!! */
KeDetachProcess();
if(Attached)
KeDetachProcess();
}
else
{