VOP_COPY_FILE_RANGE(9) on FreeBSD
The text 26232c8555ae, as FreeBSD 16.0-CURRENT (2026-10-27), FreeBSD 15.1-RELEASE, FreeBSD 15.0-RELEASE, FreeBSD 14.5-RELEASE, FreeBSD 14.4-RELEASE, FreeBSD 14.3-RELEASE, FreeBSD 14.2-RELEASE, FreeBSD 14.1-RELEASE, FreeBSD 14.0-RELEASE shipped it. The page shows this text now.
copy a byte range within a file or from one file to another in a single file system or between multiple file systems