| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 2 | #ifndef __AF_UNIX_H |
| 3 | #define __AF_UNIX_H |
| 4 | |
| 5 | #include <linux/uidgid.h> |
| 6 | |
| 7 | #define UNIX_HASH_MOD (256 - 1) |
| 8 | #define UNIX_HASH_SIZE (256 * 2) |
| 9 | #define UNIX_HASH_BITS 8 |
| 10 | |
| 11 | struct sock *unix_peer_get(struct sock *sk); |
| 12 | |
| 13 | struct unix_skb_parms { |
| 14 | struct pid *pid; /* skb credentials */ |
| 15 | kuid_t uid; |
| 16 | kgid_t gid; |
| 17 | struct scm_fp_list *fp; /* Passed files */ |
| 18 | #ifdef CONFIG_SECURITY_NETWORK |
| 19 | u32 secid; /* Security ID */ |
| 20 | #endif |
| 21 | u32 consumed; |
| 22 | } __randomize_layout; |
| 23 | |
| 24 | #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) |
| 25 | |
| 26 | /* GC for SCM_RIGHTS */ |
| 27 | void unix_add_edges(struct scm_fp_list *fpl, struct unix_sock *receiver); |
| 28 | void unix_del_edges(struct scm_fp_list *fpl); |
| 29 | void unix_update_edges(struct unix_sock *receiver); |
| 30 | int unix_prepare_fpl(struct scm_fp_list *fpl); |
| 31 | void unix_destroy_fpl(struct scm_fp_list *fpl); |
| 32 | void unix_schedule_gc(struct user_struct *user); |
| 33 | |
| 34 | /* SOCK_DIAG */ |
| 35 | long unix_inq_len(struct sock *sk); |
| 36 | long unix_outq_len(struct sock *sk); |
| 37 | |
| 38 | /* sysctl */ |
| 39 | #ifdef CONFIG_SYSCTL |
| 40 | int unix_sysctl_register(struct net *net); |
| 41 | void unix_sysctl_unregister(struct net *net); |
| 42 | #else |
| 43 | static inline int unix_sysctl_register(struct net *net) |
| 44 | { |
| 45 | return 0; |
| 46 | } |
| 47 | |
| 48 | static inline void unix_sysctl_unregister(struct net *net) |
| 49 | { |
| 50 | } |
| 51 | #endif |
| 52 | |
| 53 | /* BPF SOCKMAP */ |
| 54 | int __unix_dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, int flags); |
| 55 | int __unix_stream_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, int flags); |
| 56 | |
| 57 | #ifdef CONFIG_BPF_SYSCALL |
| 58 | extern struct proto unix_dgram_proto; |
| 59 | extern struct proto unix_stream_proto; |
| 60 | |
| 61 | int unix_dgram_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); |
| 62 | int unix_stream_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); |
| 63 | void __init unix_bpf_build_proto(void); |
| 64 | #else |
| 65 | static inline void __init unix_bpf_build_proto(void) |
| 66 | { |
| 67 | } |
| 68 | #endif |
| 69 | |
| 70 | #endif |
| 71 | |