7202cb5916
Commit 1971d13ffa ("af_unix: Suppress false-positive lockdep splat for
spin_lock() in __unix_gc().") added U_LOCK_GC_LISTENER for the old GC,
but it's no longer needed for the new GC.
Let's remove U_LOCK_GC_LISTENER and unix_state_lock_nested() as there's
no user.
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
129 lines
3.2 KiB
C
129 lines
3.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __LINUX_NET_AFUNIX_H
|
|
#define __LINUX_NET_AFUNIX_H
|
|
|
|
#include <linux/socket.h>
|
|
#include <linux/un.h>
|
|
#include <linux/mutex.h>
|
|
#include <linux/refcount.h>
|
|
#include <net/sock.h>
|
|
|
|
#if IS_ENABLED(CONFIG_UNIX)
|
|
struct unix_sock *unix_get_socket(struct file *filp);
|
|
#else
|
|
static inline struct unix_sock *unix_get_socket(struct file *filp)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
extern unsigned int unix_tot_inflight;
|
|
void unix_add_edges(struct scm_fp_list *fpl, struct unix_sock *receiver);
|
|
void unix_del_edges(struct scm_fp_list *fpl);
|
|
void unix_update_edges(struct unix_sock *receiver);
|
|
int unix_prepare_fpl(struct scm_fp_list *fpl);
|
|
void unix_destroy_fpl(struct scm_fp_list *fpl);
|
|
void unix_gc(void);
|
|
void wait_for_unix_gc(struct scm_fp_list *fpl);
|
|
|
|
struct unix_vertex {
|
|
struct list_head edges;
|
|
struct list_head entry;
|
|
struct list_head scc_entry;
|
|
unsigned long out_degree;
|
|
unsigned long index;
|
|
unsigned long scc_index;
|
|
};
|
|
|
|
struct unix_edge {
|
|
struct unix_sock *predecessor;
|
|
struct unix_sock *successor;
|
|
struct list_head vertex_entry;
|
|
struct list_head stack_entry;
|
|
};
|
|
|
|
struct sock *unix_peer_get(struct sock *sk);
|
|
|
|
#define UNIX_HASH_MOD (256 - 1)
|
|
#define UNIX_HASH_SIZE (256 * 2)
|
|
#define UNIX_HASH_BITS 8
|
|
|
|
struct unix_address {
|
|
refcount_t refcnt;
|
|
int len;
|
|
struct sockaddr_un name[];
|
|
};
|
|
|
|
struct unix_skb_parms {
|
|
struct pid *pid; /* Skb credentials */
|
|
kuid_t uid;
|
|
kgid_t gid;
|
|
struct scm_fp_list *fp; /* Passed files */
|
|
#ifdef CONFIG_SECURITY_NETWORK
|
|
u32 secid; /* Security ID */
|
|
#endif
|
|
u32 consumed;
|
|
} __randomize_layout;
|
|
|
|
struct scm_stat {
|
|
atomic_t nr_fds;
|
|
unsigned long nr_unix_fds;
|
|
};
|
|
|
|
#define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb))
|
|
|
|
/* The AF_UNIX socket */
|
|
struct unix_sock {
|
|
/* WARNING: sk has to be the first member */
|
|
struct sock sk;
|
|
struct unix_address *addr;
|
|
struct path path;
|
|
struct mutex iolock, bindlock;
|
|
struct sock *peer;
|
|
struct sock *listener;
|
|
struct unix_vertex *vertex;
|
|
spinlock_t lock;
|
|
struct socket_wq peer_wq;
|
|
wait_queue_entry_t peer_wake;
|
|
struct scm_stat scm_stat;
|
|
#if IS_ENABLED(CONFIG_AF_UNIX_OOB)
|
|
struct sk_buff *oob_skb;
|
|
#endif
|
|
};
|
|
|
|
#define unix_sk(ptr) container_of_const(ptr, struct unix_sock, sk)
|
|
#define unix_peer(sk) (unix_sk(sk)->peer)
|
|
|
|
#define unix_state_lock(s) spin_lock(&unix_sk(s)->lock)
|
|
#define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock)
|
|
|
|
#define peer_wait peer_wq.wait
|
|
|
|
long unix_inq_len(struct sock *sk);
|
|
long unix_outq_len(struct sock *sk);
|
|
|
|
int __unix_dgram_recvmsg(struct sock *sk, struct msghdr *msg, size_t size,
|
|
int flags);
|
|
int __unix_stream_recvmsg(struct sock *sk, struct msghdr *msg, size_t size,
|
|
int flags);
|
|
#ifdef CONFIG_SYSCTL
|
|
int unix_sysctl_register(struct net *net);
|
|
void unix_sysctl_unregister(struct net *net);
|
|
#else
|
|
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_dgram_proto;
|
|
extern struct proto unix_stream_proto;
|
|
|
|
int unix_dgram_bpf_update_proto(struct sock *sk, struct sk_psock *psock, bool restore);
|
|
int unix_stream_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
|