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af_unix: Implement ->psock_update_sk_prot()

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Now we can implement unix_bpf_update_proto() to update
sk_prot, especially prot->close().

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210704190252.11866-7-xiyou.wangcong@gmail.com
This commit is contained in:
Cong Wang
2021-07-04 12:02:47 -07:00
committed by Alexei Starovoitov
parent c7272e15f0
commit c63829182c
6 changed files with 65 additions and 1 deletions
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10
include/net/af_unix.h
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@@ -89,4 +89,14 @@ void unix_sysctl_unregister(struct net *net);
static inline int unix_sysctl_register(struct net *net) { return 0; }
static inline void unix_sysctl_unregister(struct net *net) {}
#endif
#ifdef CONFIG_BPF_SYSCALL
extern struct proto unix_proto;
int unix_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore);
void __init unix_bpf_build_proto(void);
#else
static inline void __init unix_bpf_build_proto(void)
{}
#endif
#endif