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fix(system/file): use 64-bit math when copying files

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This commit is contained in:
phaneron 2023-08-14 20:40:09 -04:00
parent d0f9939077
commit 581522ca0f
2 changed files with 10 additions and 7 deletions
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11
bc/system/file/posix/System_File.cpp
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@ -275,13 +275,13 @@ bool Copy(File::Filesystem* fs, Stacked::FileParms* parms) {
auto sz_source = File::GetFileInfo(st_source)->size; auto sz_source = File::GetFileInfo(st_source)->size;
// copybuffer size upper limit is BC_FILE_SYSTEM_COPYBUFFER_SIZE // copybuffer size upper limit is BC_FILE_SYSTEM_COPYBUFFER_SIZE
size_t sz_copybuffer = std::min(static_cast<size_t>(sz_source), static_cast<size_t>(BC_FILE_SYSTEM_COPYBUFFER_SIZE)); uint64_t sz_copybuffer = std::min(sz_source, static_cast<uint64_t>(BC_FILE_SYSTEM_COPYBUFFER_SIZE));
auto u8_copybuffer = reinterpret_cast<uint8_t*>(Memory::Allocate(sz_copybuffer)); auto u8_copybuffer = reinterpret_cast<uint8_t*>(Memory::Allocate(sz_copybuffer));
// Loop through the source file, reading segments into copybuffer // Loop through the source file, reading segments into copybuffer
for (size_t index = 0; index < sz_source; index += sz_copybuffer) { for (uint64_t index = 0; index < sz_source; index += sz_copybuffer) {
// How many bytes to read // How many bytes to read
size_t sz_bytesToRead = sz_source - std::min(index+sz_copybuffer, sz_source); size_t sz_bytesToRead = static_cast<size_t>(sz_source - std::min(index+sz_copybuffer, sz_source));
size_t sz_bytesRead = 0; size_t sz_bytesRead = 0;
size_t sz_bytesWritten = 0; size_t sz_bytesWritten = 0;
// Read data segment into copybuffer // Read data segment into copybuffer
@ -311,6 +311,9 @@ bool Copy(File::Filesystem* fs, Stacked::FileParms* parms) {
// Success! // Success!
return true; return true;
// Success!
return true;
} }
bool Open(File::Filesystem* fs, Stacked::FileParms* parms) { bool Open(File::Filesystem* fs, Stacked::FileParms* parms) {

6
bc/system/file/win/Stacked.cpp
View file

@ -472,13 +472,13 @@ bool Copy(FileParms* parms) {
auto sz_source = File::GetFileInfo(st_source)->size; auto sz_source = File::GetFileInfo(st_source)->size;
// copybuffer size upper limit is BC_FILE_SYSTEM_COPYBUFFER_SIZE // copybuffer size upper limit is BC_FILE_SYSTEM_COPYBUFFER_SIZE
size_t sz_copybuffer = std::min(sz_source, uint64_t(BC_FILE_SYSTEM_COPYBUFFER_SIZE)); uint64_t sz_copybuffer = std::min(sz_source, static_cast<uint64_t>(BC_FILE_SYSTEM_COPYBUFFER_SIZE));
auto u8_copybuffer = reinterpret_cast<uint8_t*>(Memory::Allocate(sz_copybuffer)); auto u8_copybuffer = reinterpret_cast<uint8_t*>(Memory::Allocate(sz_copybuffer));
// Loop through the source file, reading segments into copybuffer // Loop through the source file, reading segments into copybuffer
for (uint64_t index = 0; index < sz_source; index += sz_copybuffer) { for (uint64_t index = 0; index < sz_source; index += sz_copybuffer) {
// How many bytes to read // How many bytes to read
size_t sz_bytesToRead = sz_source - std::min(index+sz_copybuffer, sz_source); size_t sz_bytesToRead = static_cast<size_t>(sz_source - std::min(index+sz_copybuffer, sz_source));
size_t sz_bytesRead = 0; size_t sz_bytesRead = 0;
size_t sz_bytesWritten = 0; size_t sz_bytesWritten = 0;
// Read data segment into copybuffer // Read data segment into copybuffer