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kernel.load_file_umode: allocate physical storage before unpacking
git-svn-id: svn://kolibrios.org@4237 a494cfbc-eb01-0410-851d-a64ba20cac60
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@ -544,7 +544,6 @@ proc load_file_umode stdcall, file_name:dword
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push edi
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push ebx
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lea eax, [attr]
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stdcall get_fileinfo, [file_name], eax ;find file and get info
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test eax, eax
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@ -570,11 +569,26 @@ proc load_file_umode stdcall, file_name:dword
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mov ebx, [eax+4] ;get real size of file
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mov [file_size], ebx
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stdcall user_alloc, ebx ;and allocate memory from user heap
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stdcall user_alloc, ebx ;and allocate space from user heap
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mov [um_file], eax
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test eax, eax
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jz .err_2
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mov edx, [file_size] ;preallocate page memory
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shr eax, 10
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lea edi, [page_tabs+eax]
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add edx, 4095
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shr edx, 12
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@@:
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call alloc_page
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test eax, eax
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jz .err_3
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or eax, PG_UW
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stosd
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dec edx
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jnz @B
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pushad
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mov ecx, unpack_mutex
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call mutex_lock
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@ -587,15 +601,28 @@ proc load_file_umode stdcall, file_name:dword
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stdcall kernel_free, [km_file] ;we don't need packed file anymore
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.exit:
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mov edi, [um_file]
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mov esi, [um_file]
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mov eax, [file_size]
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mov edx, eax
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add edi, eax ;cleanup remain space
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mov ecx, 4096 ;from file end
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and eax, 4095
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jz @f
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sub ecx, eax
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xor eax, eax
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cld
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rep stosb
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@@:
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mov eax, [um_file]
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mov edx, [file_size]
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pop ebx
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pop edi
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pop esi
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ret
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.raw_file: ; sometimes we load unpacked file
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stdcall user_alloc, ebx ; allocate space from user heap
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mov [um_file], eax
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@ -619,13 +646,14 @@ proc load_file_umode stdcall, file_name:dword
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@@:
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lodsd
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and eax, 0xFFFFF000
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or eax, PG_USER
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or eax, PG_UW
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stosd
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loop @B
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stdcall free_kernel_space, [km_file] ; release allocated kernel space
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jmp .exit ; physical pages still in use
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.err_3:
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stdcall user_free, [um_file]
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.err_2:
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stdcall kernel_free, [km_file]
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.err_1:
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