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Jakub ZelenkaandDavid Carlier
32a0f3b6cf
This introduces new API for fd copying and modifies php_stream_copy_to_stream_ex to use it. The implementation is separated for various platforms and the end result have couple of implications: - sendfile is used for copying file to generic fd (e.g. sockets) on all platforms except Windows that use TransmitFile - splice is used for copying between generic fds (e.g. sockets) on Linux - copy_file_range should get used on alpine linux with directly using syscall (as musl does not seem to implement it) - copy_file_range is used in the loop so it is used multiple times for files bigger than 2GB on Linux. - file mmap for copying is removed as it allowed crashing PHP when another process modified mapped file - this was used as a fallback for file copying. Sendfile should partially replace it. - File to file copying was optimized on Windows with use of ReadFile and WriteFile. This also adds various tests including Linux unit tests. Closes GH-20399 Co-authored-by: David Carlier <devnexen@gmail.com>