Function at 0x49c540
Capabilities:
Get disk size
Get file size
Read file on windows

Disassembly:
push ebp
mov ebp, esp
sub esp, 0x15c
mov eax, dword [ebp + 0x20]
mov ecx, dword [ebp + 0x1c]
push ebx
push esi
push edi
push eax
push eax
call fcn.004aae10
push 0
push dword [ebp + 8]
lea ecx, [ebp - 0x5c]
mov byte [ebp - 0x14], 0
mov dword [ebp - 0x40], 0xffffffff
mov dword [ebp - 0x30], 0
mov dword [ebp - 0x2c], 0
mov dword [ebp - 0x18], 0
mov dword [ebp - 0x5c], vtable.CPathString.0
mov dword [ebp - 0x54], 0
call fcn.0049c250
mov eax, dword [ebp - 0x40]
mov esi, dword [ebp - 0x58]
mov ebx, dword [ebp + 0x24]
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49c5bc
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49c5bc
call edi
mov eax, ebx
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
mov dword [ebp - 0x38], 0
mov dword [ebp - 0x34], 0
and eax, 0xffffffb3
je 0x49c60d
push eax
push str.unsupported_flags_0x_x_passed_to_CFileReader::BOpenFile
push 0x138c
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00536b80
add esp, 0x10
test al, al
jne 0x49c60a
int3
and ebx, 0x4c
cmp byte [ebp - 0x14], 0
je 0x49c718
xor edi, edi
mov dword [ebp - 0x50], vtable.CPathString.0
push edi
push esi
lea ecx, [ebp - 0x50]
mov dword [ebp - 0x48], edi
call fcn.0049c250
push 0x3a
push dword [ebp - 0x4c]
call fcn.0054eb80
add esp, 8
test eax, eax
je 0x49c696
mov ecx, dword [ebp - 0x4c]
mov edx, 0x100
sub eax, ecx
lea edi, [eax + 2]
mov eax, 0xff
cmp edi, eax
cmova edi, eax
cmp edi, edx
mov eax, edi
cmova eax, edx
push eax
push ecx
lea eax, [ebp - 0x15c]
push eax
call fcn.00547600
add esp, 0xc
mov byte [ebp + edi - 0x15c], 0
lea eax, [ebp - 4]
push eax
lea eax, [ebp - 0x44]
push eax
lea eax, [ebp + 0x24]
push eax
lea eax, [ebp - 8]
push eax
lea eax, [ebp - 0x15c]
push eax
call dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceA]
xor edi, edi
jmp 0x49c6ae
lea eax, [ebp - 4]
push eax
lea eax, [ebp - 0x44]
push eax
lea eax, [ebp + 0x24]
push eax
lea eax, [ebp - 8]
push eax
push 0
call dword [sym.imp.KERNEL32.dll_GetDiskFreeSpaceA]
test eax, eax
mov dword [ebp - 0x50], vtable.CPathString.0
mov eax, dword [ebp - 0x48]
cmovne edi, dword [ebp + 0x24]
test eax, eax
je 0x49c6d2
push eax
call fcn.0054d204
add esp, 4
mov dword [ebp - 0x48], 0
mov eax, dword [ebp - 0x4c]
test eax, eax
je 0x49c6e9
push eax
call fcn.0054d204
add esp, 4
mov dword [ebp - 0x4c], 0
mov dword [ebp - 0x10], edi
test edi, edi
je 0x49c6f5
or ebx, 2
jmp 0x49c712
push esi
push str.Failed_to_get_sector_size_for_drive_file__s_is_on__not_using_unbuffered_IO
push 0x139b
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00536b80
add esp, 0x10
test al, al
jne 0x49c712
int3
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
lea eax, [ebp - 0x40]
test bl, 0x40
push eax
push ebx
mov ecx, 0
mov eax, 3
push 0
cmovne eax, ecx
push eax
push 1
push esi
call fcn.0049b910
add esp, 0x18
test eax, eax
jne 0x49c749
cmp dword [ebp - 0x40], 0xffffffff
je 0x49c749
xor bl, bl
jmp 0x49c74b
mov bl, 1
mov eax, dword [ebp - 0x54]
mov dword [ebp - 0x5c], vtable.CPathString.0
test eax, eax
je 0x49c769
push eax
call fcn.0054d204
add esp, 4
mov dword [ebp - 0x54], 0
test esi, esi
je 0x49c77d
push esi
call fcn.0054d204
add esp, 4
mov dword [ebp - 0x58], 0
test bl, bl
jne 0x49cc43
lea eax, [ebp - 0x4c]
xor ebx, ebx
push eax
push dword [ebp - 0x40]
xor esi, esi
call dword [sym.imp.KERNEL32.dll_GetFileSizeEx]
test eax, eax
jne 0x49c7a5
call edi
test eax, eax
je 0x49c7ab
mov dword [ebp - 0x48], ebx
jmp 0x49c7ae
mov ebx, dword [ebp - 0x4c]
mov esi, dword [ebp - 0x48]
mov dword [ebp - 0x48], esi
mov edi, dword [ebp + 0x10]
test edi, edi
ja 0x49cc43
mov esi, dword [ebp + 0xc]
jb 0x49c7c6
cmp esi, ebx
ja 0x49cc43
mov eax, esi
or eax, edi
je 0x49c892
cmp dword [ebp - 0x40], 0xffffffff
jne 0x49c7e5
push str.BIsOpen__
push 0x1455
jmp 0x49cc31
cmp byte [ebp - 0x14], 0
je 0x49c80f
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x49c80f
push 0
push eax
push edi
push esi
call fcn.0054e050
or eax, edx
je 0x49c80f
push str.Seeking_to_a_position_which_is_not_sector_aligned_will_break_unbuffered_io
push 0x145d
jmp 0x49cc31
cmp dword [ebp - 0x18], 0
je 0x49c84f
mov edx, dword [ebp - 0x24]
cmp edi, edx
jb 0x49c841
mov eax, dword [ebp - 0x28]
ja 0x49c825
cmp esi, eax
jb 0x49c841
mov ecx, dword [ebp - 0x20]
add ecx, eax
mov eax, dword [ebp - 0x1c]
adc eax, edx
cmp edi, eax
ja 0x49c841
jb 0x49c839
cmp esi, ecx
jae 0x49c841
mov dword [ebp - 0x38], esi
mov dword [ebp - 0x34], edi
jmp 0x49c892
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
push 0
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], edi
push eax
push esi
push dword [ebp - 0x40]
call dword [sym.imp.KERNEL32.dll_SetFilePointer]
mov dword [ebp - 4], eax
cmp eax, 0xffffffff
jne 0x49c883
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49c883
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49c892
jmp 0x49cc43
mov eax, dword [ebp + 0x24]
xor ecx, ecx
or ecx, dword [ebp - 4]
cdq
mov dword [ebp - 0x38], ecx
mov dword [ebp - 0x34], eax
mov eax, dword [ebp + 0x18]
sub ebx, esi
mov ecx, 0
sbb ecx, edi
cmp eax, ecx
ja 0x49c8ab
mov esi, dword [ebp + 0x14]
jb 0x49c8af
cmp esi, ebx
jb 0x49c8af
mov esi, ebx
mov eax, ecx
test eax, eax
ja 0x49cc43
jb 0x49cc27
cmp esi, 0x7ffffffe
ja 0x49cc43
test eax, eax
jne 0x49cc27
cmp esi, 0x40000000
ja 0x49cc27
mov edi, dword [ebp + 0x1c]
mov ecx, edi
call fcn.0046c830
mov eax, dword [ebp + 0x20]
mov ecx, edi
movzx ebx, al
xor ebx, 1
add ebx, esi
push ebx
mov dword [ebp - 0x48], ebx
call fcn.004a95b0
test ebx, ebx
je 0x49cc23
push ebx
mov ecx, edi
call fcn.004a9280
test al, al
je 0x49cc43
mov eax, dword [ebp + 0x1c]
mov edi, dword [edi + 0x14]
add edi, dword [eax + 4]
mov dword [ebp - 8], edi
je 0x49cc43
cmp dword [ebp - 0x40], 0xffffffff
mov ebx, edi
jne 0x49c93e
push str.BIsOpen__
push 0x13d3
jmp 0x49cc31
mov ecx, closesocket
sub ecx, dword [ebp - 0x30]
mov dword [ebp - 4], ecx
cmp esi, ecx
jbe 0x49c99f
xor edi, edi
test esi, esi
je 0x49cbea
jmp 0x49c960
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], 0
push eax
cmp ecx, esi
mov eax, esi
cmovb eax, ecx
lea ecx, [ebp - 0x40]
push eax
push ebx
call fcn.0049cda0
test al, al
je 0x49cc43
mov eax, dword [ebp + 0x24]
test eax, eax
je 0x49cbea
mov ecx, dword [ebp - 4]
add edi, eax
add ebx, eax
sub esi, eax
jne 0x49c960
jmp 0x49cbea
cmp esi, 0x7fffffff
jb 0x49c9c3
push str.cubBytesToRead___INT32_MAX
push 0x13f3
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00536b70
add esp, 0xc
test al, al
jne 0x49c9c3
int3
cmp byte [ebp - 0x14], 0
je 0x49ca4f
xor edx, edx
mov eax, esi
div dword [ebp - 0x10]
test edx, edx
je 0x49c9e7
push str.CFileReader::Read_must_be_called_with_a_cubData_value_that_is_a_multiple_of_the_sector_size_when_using_unbuffered_IO
push 0x13fa
jmp 0x49cc31
cmp byte [0x7d8215], 0
jne 0x49ca1b
test edi, 0xfff
je 0x49ca1b
push str.Unbuffered_read_should_be_called_with_pvData_buffer_that_is_aligned_to_system_page_size__4kb_
push 0x13ff
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x7d8215], 1
call fcn.00536b70
add esp, 0xc
test al, al
jne 0x49ca1b
int3
cmp byte [0x7d8216], 0
jne 0x49ca4f
test esi, 0xfff
je 0x49ca4f
push str.Unbuffered_read_should_be_called_with_cubData_length_that_is_aligned_to_system_page_size__4kb_
push 0x1400
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x7d8216], 1
call fcn.00536b70
add esp, 0xc
test al, al
jne 0x49ca4f
int3
mov eax, dword [ebp - 0x18]
mov edx, esi
mov ebx, dword [ebp - 0x34]
xor edi, edi
mov ecx, dword [ebp - 0x38]
mov dword [ebp - 0x44], edx
test eax, eax
je 0x49cae7
cmp ebx, dword [ebp - 0x24]
jb 0x49cae7
mov eax, dword [ebp - 0x28]
ja 0x49ca75
cmp ecx, eax
jb 0x49cae4
mov edx, dword [ebp - 0x20]
mov dword [ebp + 0x24], edx
mov edx, esi
add dword [ebp + 0x24], eax
mov eax, dword [ebp - 0x1c]
adc eax, dword [ebp - 0x24]
cmp ebx, eax
ja 0x49cae4
jb 0x49ca91
cmp ecx, dword [ebp + 0x24]
jae 0x49cae4
mov edx, dword [ebp - 0x20]
mov edi, dword [ebp - 0x1c]
sub edx, ecx
mov eax, dword [ebp - 0x28]
sbb edi, ebx
add edx, eax
adc edi, dword [ebp - 0x24]
xor ebx, ebx
cmp ebx, edi
ja 0x49cab3
jb 0x49caaf
cmp esi, edx
jae 0x49cab3
mov edi, esi
jmp 0x49caba
mov edi, dword [ebp - 0x20]
sub edi, ecx
add edi, eax
sub ecx, eax
add ecx, dword [ebp - 0x18]
push edi
push ecx
push dword [ebp - 8]
call fcn.0054f300
mov ecx, dword [ebp - 0x38]
add esp, 0xc
mov ebx, dword [ebp - 0x34]
add ecx, edi
mov edx, esi
mov dword [ebp - 0x38], ecx
adc ebx, 0
sub edx, edi
mov dword [ebp - 0x34], ebx
mov dword [ebp - 0x44], edx
mov eax, dword [ebp - 0x18]
test edx, edx
jne 0x49caf2
mov edi, esi
jmp 0x49cbea
mov dword [ebp + 0x24], edx
test eax, eax
je 0x49cb0b
cmp dword [ebp - 0x2c], 0
jb 0x49cb0b
ja 0x49cb06
cmp dword [ebp - 0x30], edx
jbe 0x49cb0b
mov edx, dword [ebp - 0x30]
jmp 0x49cb0e
mov edx, dword [ebp + 0x24]
mov eax, dword [ebp - 0x30]
or eax, dword [ebp - 0x2c]
je 0x49cb81
xor eax, eax
cmp edx, dword [ebp - 0x30]
jne 0x49cb81
cmp eax, dword [ebp - 0x2c]
jne 0x49cb81
push eax
mov dword [ebp - 4], eax
lea eax, [ebp - 4]
push eax
push edx
push dword [ebp - 0x18]
mov dword [ebp - 0x28], ecx
push dword [ebp - 0x40]
mov dword [ebp - 0x24], ebx
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x49cb55
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
sete byte [ebp + 0x27]
xor ebx, ebx
test eax, eax
jne 0x49cbc5
jmp 0x49cb5c
mov ebx, dword [ebp - 4]
mov byte [ebp + 0x27], 1
mov eax, ebx
cdq
mov dword [ebp - 0x20], eax
mov eax, dword [ebp - 0x44]
cmp ebx, eax
mov dword [ebp - 0x1c], edx
cmovb eax, ebx
push eax
push dword [ebp - 0x18]
mov eax, dword [ebp - 8]
add eax, edi
push eax
call fcn.0054f300
add esp, 0xc
jmp 0x49cbc5
push 0
lea eax, [ebp + 0x24]
mov dword [ebp + 0x24], 0
push eax
mov eax, dword [ebp - 8]
push edx
add eax, edi
push eax
push dword [ebp - 0x40]
call dword [sym.imp.KERNEL32.dll_ReadFile]
test eax, eax
jne 0x49cbac
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor ebx, ebx
jmp 0x49cbb1
mov ebx, dword [ebp + 0x24]
xor eax, eax
test eax, eax
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
sete byte [ebp + 0x27]
xor ecx, ecx
cmp byte [ebp + 0x27], cl
cmovne ecx, ebx
cmp dword [ebp - 0x44], ecx
mov eax, ecx
cmovb eax, dword [ebp - 0x44]
add dword [ebp - 0x38], eax
adc dword [ebp - 0x34], 0
add edi, ecx
cmp esi, edi
cmovb edi, esi
cmp byte [ebp + 0x27], 0
je 0x49cc43
cmp byte [ebp + 0x20], 0
jne 0x49cc18
cmp edi, dword [ebp - 0x48]
jb 0x49cc11
push str.cbActual____uint32_nBufSizeWithTerminator
push 0x948
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00536b70
add esp, 0xc
test al, al
jne 0x49cc11
int3
mov eax, dword [ebp - 8]
mov byte [eax + edi], 0
mov ecx, dword [ebp + 0x1c]
push edi
push 0
call fcn.004aad20
mov bl, 1
jmp 0x49cc45
push str.cbToRead___1024__1024__1024
push 0x928
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00536b70
add esp, 0xc
test al, al
jne 0x49cc43
int3
xor bl, bl
mov eax, dword [ebp - 0x40]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49cc6c
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49cc65
call dword [sym.imp.KERNEL32.dll_GetLastError]
mov dword [ebp - 0x40], 0xffffffff
mov eax, dword [ebp - 0x18]
mov dword [ebp - 0x38], 0
mov dword [ebp - 0x34], 0
mov dword [ebp - 0x28], 0
mov dword [ebp - 0x24], 0
mov dword [ebp - 0x20], 0
mov dword [ebp - 0x1c], 0
test eax, eax
je 0x49cca6
push eax
call fcn.0054d204
add esp, 4
pop edi
pop esi
mov al, bl
pop ebx
mov esp, ebp
pop ebp
ret