Jannik Glückert cb1c15639f
[libc++] Use copy_file_range for fs::copy (#109211)
This optimizes `std::filesystem::copy_file` to use the `copy_file_range`
syscall (Linux and FreeBSD) when available. It allows for reflinks on
filesystems such as btrfs, zfs and xfs, and server-side copy for network
filesystems such as NFS.
2025-01-06 15:38:30 -05:00
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