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-rw-r--r--src/core/hle/kernel/shared_memory.cpp10
-rw-r--r--src/core/hle/kernel/shared_memory.h10
-rw-r--r--src/core/hle/kernel/svc.cpp2
3 files changed, 18 insertions, 4 deletions
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp
index 62861da36..273e6a25e 100644
--- a/src/core/hle/kernel/shared_memory.cpp
+++ b/src/core/hle/kernel/shared_memory.cpp
@@ -119,7 +119,15 @@ ResultCode SharedMemory::Map(Process& target_process, VAddr address, MemoryPermi
ConvertPermissions(permissions));
}
-ResultCode SharedMemory::Unmap(Process& target_process, VAddr address) {
+ResultCode SharedMemory::Unmap(Process& target_process, VAddr address, u64 unmap_size) {
+ if (unmap_size != size) {
+ LOG_ERROR(Kernel,
+ "Invalid size passed to Unmap. Size must be equal to the size of the "
+ "memory managed. Shared memory size=0x{:016X}, Unmap size=0x{:016X}",
+ size, unmap_size);
+ return ERR_INVALID_SIZE;
+ }
+
// TODO(Subv): Verify what happens if the application tries to unmap an address that is not
// mapped to a SharedMemory.
return target_process.VMManager().UnmapRange(address, size);
diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h
index dab2a6bea..37e18c443 100644
--- a/src/core/hle/kernel/shared_memory.h
+++ b/src/core/hle/kernel/shared_memory.h
@@ -104,11 +104,17 @@ public:
/**
* Unmaps a shared memory block from the specified address in system memory
+ *
* @param target_process Process from which to unmap the memory block.
- * @param address Address in system memory where the shared memory block is mapped
+ * @param address Address in system memory where the shared memory block is mapped.
+ * @param unmap_size The amount of bytes to unmap from this shared memory instance.
+ *
* @return Result code of the unmap operation
+ *
+ * @pre The given size to unmap must be the same size as the amount of memory managed by
+ * the SharedMemory instance itself, otherwise ERR_INVALID_SIZE will be returned.
*/
- ResultCode Unmap(Process& target_process, VAddr address);
+ ResultCode Unmap(Process& target_process, VAddr address, u64 unmap_size);
/**
* Gets a pointer to the shared memory block
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 11796e5e5..fd98c0825 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -1140,7 +1140,7 @@ static ResultCode UnmapSharedMemory(Handle shared_memory_handle, VAddr addr, u64
return ERR_INVALID_MEMORY_RANGE;
}
- return shared_memory->Unmap(*current_process, addr);
+ return shared_memory->Unmap(*current_process, addr, size);
}
static ResultCode QueryProcessMemory(VAddr memory_info_address, VAddr page_info_address,