0d13bfce02
Reorganize bpf_object__open and bpf_object__load steps such that bpf_object__open doesn't need root access. This was previously done for feature probing and BTF sanitization. This doesn't have to happen on open, though, so move all those steps into the load phase. This is important, because it makes it possible for tools like bpftool, to just open BPF object file and inspect their contents: programs, maps, BTF, etc. For such operations it is prohibitive to require root access. On the other hand, there is a lot of custom libbpf logic in those steps, so its best avoided for tools to reimplement all that on their own. Signed-off-by: Andrii Nakryiko <andriin@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Martin KaFai Lau <kafai@fb.com> Link: https://lore.kernel.org/bpf/20191214014341.3442258-2-andriin@fb.com
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.