Messages in this thread | | | Date | Wed, 22 Mar 2023 15:13:17 +0100 | From | Christian Brauner <> | Subject | Re: [PATCH net-next v2 0/3] Add SCM_PIDFD and SO_PEERPIDFD |
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On Tue, Mar 21, 2023 at 07:33:39PM +0100, Alexander Mikhalitsyn wrote: > 1. Implement SCM_PIDFD, a new type of CMSG type analogical to SCM_CREDENTIALS, > but it contains pidfd instead of plain pid, which allows programmers not > to care about PID reuse problem. > > 2. Add SO_PEERPIDFD which allows to get pidfd of peer socket holder pidfd. > This thing is direct analog of SO_PEERCRED which allows to get plain PID. > > 3. Add SCM_PIDFD / SO_PEERPIDFD kselftest > > Idea comes from UAPI kernel group: > https://uapi-group.org/kernel-features/ > > Big thanks to Christian Brauner and Lennart Poettering for productive > discussions about this. > > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Eric Dumazet <edumazet@google.com> > Cc: Jakub Kicinski <kuba@kernel.org> > Cc: Paolo Abeni <pabeni@redhat.com> > Cc: Leon Romanovsky <leon@kernel.org> > Cc: David Ahern <dsahern@kernel.org> > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: Kees Cook <keescook@chromium.org> > Cc: Christian Brauner <brauner@kernel.org> > Cc: Kuniyuki Iwashima <kuniyu@amazon.com> > Cc: Lennart Poettering <mzxreary@0pointer.de> > > Alexander Mikhalitsyn (3): > scm: add SO_PASSPIDFD and SCM_PIDFD > net: core: add getsockopt SO_PEERPIDFD > selftests: net: add SCM_PIDFD / SO_PEERPIDFD test > > arch/alpha/include/uapi/asm/socket.h | 3 + > arch/mips/include/uapi/asm/socket.h | 3 + > arch/parisc/include/uapi/asm/socket.h | 3 + > arch/sparc/include/uapi/asm/socket.h | 3 + > include/linux/net.h | 1 + > include/linux/socket.h | 1 + > include/net/scm.h | 14 +- > include/uapi/asm-generic/socket.h | 3 + > net/core/sock.c | 32 ++ > net/mptcp/sockopt.c | 1 + > net/unix/af_unix.c | 18 +- > tools/include/uapi/asm-generic/socket.h | 3 + > tools/testing/selftests/net/.gitignore | 1 + > tools/testing/selftests/net/af_unix/Makefile | 3 +- > .../testing/selftests/net/af_unix/scm_pidfd.c | 336 ++++++++++++++++++ > 15 files changed, 417 insertions(+), 8 deletions(-) > create mode 100644 tools/testing/selftests/net/af_unix/scm_pidfd.c
What's the commit for this work? Because this seems to fail to apply cleanly on anything from v6.3-rc1 until v6.3-rc3.
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