From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/net/af_unix.h | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 include/net/af_unix.h (limited to 'include/net/af_unix.h') diff --git a/include/net/af_unix.h b/include/net/af_unix.h new file mode 100644 index 000000000000..b60b3846b9d1 --- /dev/null +++ b/include/net/af_unix.h @@ -0,0 +1,78 @@ +#ifndef __LINUX_NET_AFUNIX_H +#define __LINUX_NET_AFUNIX_H +extern void unix_inflight(struct file *fp); +extern void unix_notinflight(struct file *fp); +extern void unix_gc(void); + +#define UNIX_HASH_SIZE 256 + +extern struct hlist_head unix_socket_table[UNIX_HASH_SIZE + 1]; +extern rwlock_t unix_table_lock; + +extern atomic_t unix_tot_inflight; + +static inline struct sock *first_unix_socket(int *i) +{ + for (*i = 0; *i <= UNIX_HASH_SIZE; (*i)++) { + if (!hlist_empty(&unix_socket_table[*i])) + return __sk_head(&unix_socket_table[*i]); + } + return NULL; +} + +static inline struct sock *next_unix_socket(int *i, struct sock *s) +{ + struct sock *next = sk_next(s); + /* More in this chain? */ + if (next) + return next; + /* Look for next non-empty chain. */ + for ((*i)++; *i <= UNIX_HASH_SIZE; (*i)++) { + if (!hlist_empty(&unix_socket_table[*i])) + return __sk_head(&unix_socket_table[*i]); + } + return NULL; +} + +#define forall_unix_sockets(i, s) \ + for (s = first_unix_socket(&(i)); s; s = next_unix_socket(&(i),(s))) + +struct unix_address { + atomic_t refcnt; + int len; + unsigned hash; + struct sockaddr_un name[0]; +}; + +struct unix_skb_parms { + struct ucred creds; /* Skb credentials */ + struct scm_fp_list *fp; /* Passed files */ +}; + +#define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb)) +#define UNIXCREDS(skb) (&UNIXCB((skb)).creds) + +#define unix_state_rlock(s) read_lock(&unix_sk(s)->lock) +#define unix_state_runlock(s) read_unlock(&unix_sk(s)->lock) +#define unix_state_wlock(s) write_lock(&unix_sk(s)->lock) +#define unix_state_wunlock(s) write_unlock(&unix_sk(s)->lock) + +#ifdef __KERNEL__ +/* The AF_UNIX socket */ +struct unix_sock { + /* WARNING: sk has to be the first member */ + struct sock sk; + struct unix_address *addr; + struct dentry *dentry; + struct vfsmount *mnt; + struct semaphore readsem; + struct sock *peer; + struct sock *other; + struct sock *gc_tree; + atomic_t inflight; + rwlock_t lock; + wait_queue_head_t peer_wait; +}; +#define unix_sk(__sk) ((struct unix_sock *)__sk) +#endif +#endif -- cgit v1.2.3-59-g8ed1b