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 extern unsigned int unix_tot_inflight; 28 void unix_add_edges(struct scm_fp_list *fpl, struct unix_sock *receiver); 29 void unix_del_edges(struct scm_fp_list *fpl); 30 void unix_update_edges(struct unix_sock *receiver); 31 int unix_prepare_fpl(struct scm_fp_list *fpl); 32 void unix_destroy_fpl(struct scm_fp_list *fpl); 33 void unix_gc(void); 34 void wait_for_unix_gc(struct scm_fp_list *fpl); 35 36 /* SOCK_DIAG */ 37 long unix_inq_len(struct sock *sk); 38 long unix_outq_len(struct sock *sk); 39 40 /* sysctl */ 41 #ifdef CONFIG_SYSCTL 42 int unix_sysctl_register(struct net *net); 43 void unix_sysctl_unregister(struct net *net); 44 #else 45 static inline int unix_sysctl_register(struct net *net) 46 { 47 return 0; 48 } 49 50 static inline void unix_sysctl_unregister(struct net *net) 51 { 52 } 53 #endif 54 55 /* BPF SOCKMAP */ 56 int __unix_dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, int flags); 57 int __unix_stream_recvmsg(struct sock *sk, struct msghdr *msg, size_t size, int flags); 58 59 #ifdef CONFIG_BPF_SYSCALL 60 extern struct proto unix_dgram_proto; 61 extern struct proto unix_stream_proto; 62 63 int unix_dgram_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); 64 int unix_stream_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore); 65 void __init unix_bpf_build_proto(void); 66 #else 67 static inline void __init unix_bpf_build_proto(void) 68 { 69 } 70 #endif 71 72 #endif 73