The GNU C Library includes by reference the Linux man-pages 6.9.1 documentation to document the listed syscalls for the Linux kernel. For reference purposes only, the latest Linux man-pages Project documentation can be accessed from the Linux kernel website. Where the syscall has more specific documentation in this manual that more specific documentation is considered authoritative.
Throughout this manual, when we refer to a man page, for example:
we are referring primarily to the specific version noted above (the
“normative” version), typically accessed by running (for example)
man 2 sendmsg on a system with that version installed. For
convenience, we will also link to the online latest copy of the man
pages, but keep in mind that version will almost always be newer than,
and thus different than, the normative version noted above.
Additional details on the Linux system call interface can be found in See System Calls.