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* Enforce that the caller of transfer_area() owns the area - this fixes some

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mean crashes with the media_server version I just checked in.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34556 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2009-12-08 15:28:44 +00:00
parent 1fb5b54d2e
commit 1339ccf411
1 changed files with 4 additions and 1 deletions
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src/system/kernel/vm/vm.cpp
+4 -1
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@@ -4731,7 +4731,7 @@ resize_area(area_id areaID, size_t newSize)
/*! Transfers the specified area to a new team. The caller must be the owner /*! Transfers the specified area to a new team. The caller must be the owner
of the area (not yet enforced but probably should be). of the area.
*/ */
area_id area_id
transfer_area(area_id id, void** _address, uint32 addressSpec, team_id target, transfer_area(area_id id, void** _address, uint32 addressSpec, team_id target,
@@ -4742,6 +4742,9 @@ transfer_area(area_id id, void** _address, uint32 addressSpec, team_id target,
if (status != B_OK) if (status != B_OK)
return status; return status;
if (info.team != thread_get_current_thread()->team->id)
return B_PERMISSION_DENIED;
area_id clonedArea = vm_clone_area(target, info.name, _address, area_id clonedArea = vm_clone_area(target, info.name, _address,
addressSpec, info.protection, REGION_NO_PRIVATE_MAP, id, kernel); addressSpec, info.protection, REGION_NO_PRIVATE_MAP, id, kernel);
if (clonedArea < 0) if (clonedArea < 0)