Function at 0x49bbd0
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.004aa280
push ecx
mov eax, esp
mov byte [ebp - 0x14], 0
mov dword [ebp - 0x40], 0xffffffff
lea ecx, [ebp - 0x5c]
mov dword [ebp - 0x30], 0
mov dword [ebp - 0x2c], 0
mov dword [ebp - 0x18], 0
mov dword [eax], 0
push dword [ebp + 8]
call fcn.00499a00
mov ebx, dword [ebp + 0x24]
mov edi, dword [sym.imp.KERNEL32.dll_GetLastError]
mov esi, dword [eax + 4]
mov eax, dword [ebp - 0x40]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49bc45
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49bc45
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 0x49bc96
push eax
push str.unsupported_flags_0x_x_passed_to_CFileReader::BOpenFile
push 0x12e7
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00522070
add esp, 0x10
test al, al
jne 0x49bc93
int3
and ebx, 0x4c
cmp byte [ebp - 0x14], 0
je 0x49bd9b
push ecx
mov eax, esp
lea ecx, [ebp - 0x50]
xor edi, edi
push esi
mov dword [eax], edi
call fcn.00499a00
push 0x3a
push dword [ebp - 0x4c]
call fcn.00539d50
add esp, 8
test eax, eax
je 0x49bd19
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.00532810
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 0x49bd31
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 0x49bd55
push eax
call fcn.005383c4
add esp, 4
mov dword [ebp - 0x48], 0
mov eax, dword [ebp - 0x4c]
test eax, eax
je 0x49bd6c
push eax
call fcn.005383c4
add esp, 4
mov dword [ebp - 0x4c], 0
mov dword [ebp - 0x10], edi
test edi, edi
je 0x49bd78
or ebx, 2
jmp 0x49bd95
push esi
push str.Failed_to_get_sector_size_for_drive_file__s_is_on__not_using_unbuffered_IO
push 0x12f6
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00522070
add esp, 0x10
test al, al
jne 0x49bd95
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.0049b1c0
add esp, 0x18
test eax, eax
jne 0x49bdcc
cmp dword [ebp - 0x40], 0xffffffff
je 0x49bdcc
xor bl, bl
jmp 0x49bdce
mov bl, 1
mov eax, dword [ebp - 0x54]
mov dword [ebp - 0x5c], vtable.CPathString.0
test eax, eax
je 0x49bdec
push eax
call fcn.005383c4
add esp, 4
mov dword [ebp - 0x54], 0
mov eax, dword [ebp - 0x58]
test eax, eax
je 0x49be03
push eax
call fcn.005383c4
add esp, 4
mov dword [ebp - 0x58], 0
test bl, bl
jne 0x49c2c3
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 0x49be2b
call edi
test eax, eax
je 0x49be31
mov dword [ebp - 0x48], ebx
jmp 0x49be34
mov ebx, dword [ebp - 0x4c]
mov esi, dword [ebp - 0x48]
mov dword [ebp - 0x48], esi
mov edi, dword [ebp + 0x10]
test edi, edi
ja 0x49c2c3
mov esi, dword [ebp + 0xc]
jb 0x49be4c
cmp esi, ebx
ja 0x49c2c3
mov eax, esi
or eax, edi
je 0x49bf18
cmp dword [ebp - 0x40], 0xffffffff
jne 0x49be6b
push str.BIsOpen__
push 0x13b0
jmp 0x49c2b1
cmp byte [ebp - 0x14], 0
je 0x49be95
mov eax, dword [ebp - 0x10]
test eax, eax
je 0x49be95
push 0
push eax
push edi
push esi
call fcn.00539210
or eax, edx
je 0x49be95
push str.Seeking_to_a_position_which_is_not_sector_aligned_will_break_unbuffered_io
push 0x13b8
jmp 0x49c2b1
cmp dword [ebp - 0x18], 0
je 0x49bed5
mov edx, dword [ebp - 0x24]
cmp edi, edx
jb 0x49bec7
mov eax, dword [ebp - 0x28]
ja 0x49beab
cmp esi, eax
jb 0x49bec7
mov ecx, dword [ebp - 0x20]
add ecx, eax
mov eax, dword [ebp - 0x1c]
adc eax, edx
cmp edi, eax
ja 0x49bec7
jb 0x49bebf
cmp esi, ecx
jae 0x49bec7
mov dword [ebp - 0x38], esi
mov dword [ebp - 0x34], edi
jmp 0x49bf18
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 0x49bf09
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49bf09
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
je 0x49bf18
jmp 0x49c2c3
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 0x49bf31
mov esi, dword [ebp + 0x14]
jb 0x49bf35
cmp esi, ebx
jb 0x49bf35
mov esi, ebx
mov eax, ecx
test eax, eax
ja 0x49c2c3
jb 0x49c2a7
cmp esi, 0x7ffffffe
ja 0x49c2c3
test eax, eax
jne 0x49c2a7
cmp esi, 0x40000000
ja 0x49c2a7
mov edi, dword [ebp + 0x1c]
mov ecx, edi
call fcn.0046c460
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.004a89e0
test ebx, ebx
je 0x49c2a3
push ebx
mov ecx, edi
call fcn.004a8840
test al, al
je 0x49c2c3
mov eax, dword [ebp + 0x1c]
mov edi, dword [edi + 0x14]
add edi, dword [eax + 4]
mov dword [ebp - 8], edi
je 0x49c2c3
cmp dword [ebp - 0x40], 0xffffffff
mov ebx, edi
jne 0x49bfc4
push str.BIsOpen__
push 0x132e
jmp 0x49c2b1
mov ecx, closesocket
sub ecx, dword [ebp - 0x30]
mov dword [ebp - 4], ecx
cmp esi, ecx
jbe 0x49c01f
xor edi, edi
test esi, esi
je 0x49c26a
lea ecx, [ecx]
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.0049c420
test al, al
je 0x49c2c3
mov eax, dword [ebp + 0x24]
test eax, eax
je 0x49c26a
mov ecx, dword [ebp - 4]
add edi, eax
add ebx, eax
sub esi, eax
jne 0x49bfe0
jmp 0x49c26a
cmp esi, 0x7fffffff
jb 0x49c043
push str.cubBytesToRead___INT32_MAX
push 0x134e
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00522050
add esp, 0xc
test al, al
jne 0x49c043
int3
cmp byte [ebp - 0x14], 0
je 0x49c0cf
xor edx, edx
mov eax, esi
div dword [ebp - 0x10]
test edx, edx
je 0x49c067
push str.CFileReader::Read_must_be_called_with_a_cubData_value_that_is_a_multiple_of_the_sector_size_when_using_unbuffered_IO
push 0x1355
jmp 0x49c2b1
cmp byte [0x7b9515], 0
jne 0x49c09b
test edi, 0xfff
je 0x49c09b
push str.Unbuffered_read_should_be_called_with_pvData_buffer_that_is_aligned_to_system_page_size__4kb_
push 0x135a
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x7b9515], 1
call fcn.00522050
add esp, 0xc
test al, al
jne 0x49c09b
int3
cmp byte [0x7b9516], 0
jne 0x49c0cf
test esi, 0xfff
je 0x49c0cf
push str.Unbuffered_read_should_be_called_with_cubData_length_that_is_aligned_to_system_page_size__4kb_
push 0x135b
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
mov byte [0x7b9516], 1
call fcn.00522050
add esp, 0xc
test al, al
jne 0x49c0cf
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 0x49c167
cmp ebx, dword [ebp - 0x24]
jb 0x49c167
mov eax, dword [ebp - 0x28]
ja 0x49c0f5
cmp ecx, eax
jb 0x49c164
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 0x49c164
jb 0x49c111
cmp ecx, dword [ebp + 0x24]
jae 0x49c164
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 0x49c133
jb 0x49c12f
cmp esi, edx
jae 0x49c133
mov edi, esi
jmp 0x49c13a
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.0053a4d0
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 0x49c172
mov edi, esi
jmp 0x49c26a
mov dword [ebp + 0x24], edx
test eax, eax
je 0x49c18b
cmp dword [ebp - 0x2c], 0
jb 0x49c18b
ja 0x49c186
cmp dword [ebp - 0x30], edx
jbe 0x49c18b
mov edx, dword [ebp - 0x30]
jmp 0x49c18e
mov edx, dword [ebp + 0x24]
mov eax, dword [ebp - 0x30]
or eax, dword [ebp - 0x2c]
je 0x49c201
xor eax, eax
cmp edx, dword [ebp - 0x30]
jne 0x49c201
cmp eax, dword [ebp - 0x2c]
jne 0x49c201
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 0x49c1d5
call dword [sym.imp.KERNEL32.dll_GetLastError]
test eax, eax
sete byte [ebp + 0x27]
xor ebx, ebx
test eax, eax
jne 0x49c245
jmp 0x49c1dc
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.0053a4d0
add esp, 0xc
jmp 0x49c245
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 0x49c22c
call dword [sym.imp.KERNEL32.dll_GetLastError]
xor ebx, ebx
jmp 0x49c231
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 0x49c2c3
cmp byte [ebp + 0x20], 0
jne 0x49c298
cmp edi, dword [ebp - 0x48]
jb 0x49c291
push str.cbActual____uint32_nBufSizeWithTerminator
push 0x8d9
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00522050
add esp, 0xc
test al, al
jne 0x49c291
int3
mov eax, dword [ebp - 8]
mov byte [eax + edi], 0
mov ecx, dword [ebp + 0x1c]
push edi
push 0
call fcn.004aa190
mov bl, 1
jmp 0x49c2c5
push str.cbToRead___1024__1024__1024
push 0x8b9
push str.c:_buildslave_steam_rel_client_hotfix_win32_build_src_tier1_fileio.cpp
call fcn.00522050
add esp, 0xc
test al, al
jne 0x49c2c3
int3
xor bl, bl
mov eax, dword [ebp - 0x40]
mov dword [ebp - 0x10], 0
cmp eax, 0xffffffff
je 0x49c2ec
push eax
call dword [sym.imp.KERNEL32.dll_CloseHandle]
test eax, eax
jne 0x49c2e5
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 0x49c326
push eax
call fcn.005383c4
add esp, 4
pop edi
pop esi
mov al, bl
pop ebx
mov esp, ebp
pop ebp
ret