| 1 |
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| 2 | #ifndef __LINUX_NET_AFUNIX_H
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| 3 | #define __LINUX_NET_AFUNIX_H
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| 4 |
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| 5 | #include <linux/atomic.h>
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| 6 | #include <linux/mutex.h>
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| 7 | #include <linux/net.h>
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| 8 | #include <linux/path.h>
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| 9 | #include <linux/refcount.h>
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| 10 | #include <linux/spinlock.h>
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| 11 | #include <linux/wait.h>
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| 12 | #include <net/sock.h>
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| 13 | #include <uapi/linux/un.h>
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| 14 |
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| 15 | #if IS_ENABLED(CONFIG_UNIX)
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| 16 | struct unix_sock *unix_get_socket(struct file *filp);
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| 17 | #else
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| 18 | static inline struct unix_sock *unix_get_socket(struct file *filp)
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| 19 | {
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| 20 | return NULL;
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| 21 | }
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| 22 | #endif
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| 23 |
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| 24 | struct unix_address {
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| 25 | refcount_t refcnt;
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| 26 | int len;
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| 27 | struct sockaddr_un name[];
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| 28 | };
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| 29 |
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| 30 | struct scm_stat {
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| 31 | atomic_t nr_fds;
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| 32 | unsigned long nr_unix_fds;
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| 33 | };
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| 34 |
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| 35 |
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| 36 | struct unix_sock {
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| 37 |
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| 38 | struct sock sk;
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| 39 | struct unix_address *addr;
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| 40 | struct path path;
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| 41 | struct mutex iolock, bindlock;
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| 42 | struct sock *peer;
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| 43 | struct sock *listener;
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| 44 | struct unix_vertex *vertex;
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| 45 | spinlock_t lock;
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| 46 | struct socket_wq peer_wq;
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| 47 | #define peer_wait peer_wq.wait
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| 48 | wait_queue_entry_t peer_wake;
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| 49 | struct scm_stat scm_stat;
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| 50 | int inq_len;
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| 51 | bool recvmsg_inq;
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| 52 | bool scm_rights_notrunc;
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| 53 | #if IS_ENABLED(CONFIG_AF_UNIX_OOB)
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| 54 | struct sk_buff *oob_skb;
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| 55 | #endif
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| 56 | };
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| 57 |
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| 58 | #define unix_sk(ptr) container_of_const(ptr, struct unix_sock, sk)
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| 59 | #define unix_peer(sk) (unix_sk(sk)->peer)
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| 60 |
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| 61 | #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock)
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| 62 | #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock)
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| 63 |
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| 64 | #endif
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