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ntdll: Fix handling of 64-bit sizes in NtMapViewOfSection.

This commit is contained in:
Alexandre Julliard 2007-01-12 15:01:44 +01:00
parent 4cbe867a85
commit 3c55f78f52
1 changed files with 9 additions and 9 deletions
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18
dlls/ntdll/virtual.c
View File

@ -1874,6 +1874,10 @@ NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_p
SERVER_END_REQ;
if (res) return res;
size = ((ULONGLONG)size_high << 32) | size_low;
if (sizeof(size) == sizeof(size_low) && size_high)
ERR( "Sizes larger than 4Gb (%x%08x) not supported on this platform\n", size_high, size_low );
if ((res = server_get_unix_fd( handle, 0, &unix_handle, &needs_close, NULL, NULL ))) goto done;
if (prot & VPROT_IMAGE)
@ -1884,32 +1888,28 @@ NTSTATUS WINAPI NtMapViewOfSection( HANDLE handle, HANDLE process, PVOID *addr_p
if ((res = server_get_unix_fd( shared_file, FILE_READ_DATA|FILE_WRITE_DATA,
&shared_fd, &shared_needs_close, NULL, NULL ))) goto done;
res = map_image( handle, unix_handle, base, size_low, mask, header_size,
res = map_image( handle, unix_handle, base, size, mask, header_size,
shared_fd, dup_mapping, addr_ptr );
if (shared_needs_close) close( shared_fd );
NtClose( shared_file );
}
else
{
res = map_image( handle, unix_handle, base, size_low, mask, header_size,
res = map_image( handle, unix_handle, base, size, mask, header_size,
-1, dup_mapping, addr_ptr );
}
if (needs_close) close( unix_handle );
if (!res) *size_ptr = size_low;
if (!res) *size_ptr = size;
return res;
}
if (size_high)
ERR("Sizes larger than 4Gb not supported\n");
if ((offset.u.LowPart >= size_low) ||
(*size_ptr > size_low - offset.u.LowPart))
if ((offset.QuadPart >= size) || (*size_ptr > size - offset.QuadPart))
{
res = STATUS_INVALID_PARAMETER;
goto done;
}
if (*size_ptr) size = ROUND_SIZE( offset.u.LowPart, *size_ptr );
else size = size_low - offset.u.LowPart;
else size = size - offset.QuadPart;
switch(protect)
{