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Alexander Mikhalitsyn
7b26952a91
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. Cc: "David S. Miller" <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Jakub Kicinski <[email protected]> Cc: Paolo Abeni <[email protected]> Cc: Leon Romanovsky <[email protected]> Cc: David Ahern <[email protected]> Cc: Arnd Bergmann <[email protected]> Cc: Kees Cook <[email protected]> Cc: Christian Brauner <[email protected]> Cc: Kuniyuki Iwashima <[email protected]> Cc: Lennart Poettering <[email protected]> Cc: Luca Boccassi <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Stanislav Fomichev <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Reviewed-by: Christian Brauner <[email protected]> Acked-by: Stanislav Fomichev <[email protected]> Tested-by: Luca Boccassi <[email protected]> Signed-off-by: Alexander Mikhalitsyn <[email protected]> Reviewed-by: Eric Dumazet <[email protected]> Signed-off-by: David S. Miller <[email protected]>