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Don't use sendfile64() if input and output are the same to avoid EBADF 

This does not work and leads to sendfile64() running into EBADF ("Bad file
descriptor").
This commit is contained in:
Martchus 2023-04-23 21:21:32 +02:00
parent a55a3604bd
commit e8b4279062
1 changed files with 2 additions and 2 deletions
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4
io/copy.h
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@ -103,7 +103,7 @@ void CopyHelper<bufferSize>::callbackCopy(std::istream &input, std::ostream &out
template <std::size_t bufferSize> void CopyHelper<bufferSize>::copy(NativeFileStream &input, NativeFileStream &output, std::uint64_t count)
{
#ifdef CPP_UTILITIES_USE_SEND_FILE
if (output.fileDescriptor() != -1 && input.fileDescriptor() != -1) {
if (output.fileDescriptor() != -1 && input.fileDescriptor() != -1 && output.fileDescriptor() != input.fileDescriptor()) {
const auto inputTellg = output.tellg();
const auto inputTellp = output.tellp();
const auto outputTellg = output.tellg();
@ -151,7 +151,7 @@ void CopyHelper<bufferSize>::callbackCopy(NativeFileStream &input, NativeFileStr
const std::function<bool(void)> &isAborted, const std::function<void(double)> &callback)
{
#ifdef CPP_UTILITIES_USE_SEND_FILE
if (output.fileDescriptor() != -1 && input.fileDescriptor() != -1) {
if (output.fileDescriptor() != -1 && input.fileDescriptor() != -1 && output.fileDescriptor() != input.fileDescriptor()) {
const auto inputTellg = output.tellg();
const auto inputTellp = output.tellp();
const auto outputTellg = output.tellg();