| #ifndef __LINUX_NET_AFUNIX_H |
| #define __LINUX_NET_AFUNIX_H |
| |
| #include <linux/socket.h> |
| #include <linux/un.h> |
| #include <linux/mutex.h> |
| #include <net/sock.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 unsigned int unix_tot_inflight; |
| |
| 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 */ |
| #ifdef CONFIG_SECURITY_NETWORK |
| u32 secid; /* Security ID */ |
| #endif |
| }; |
| |
| #define UNIXCB(skb) (*(struct unix_skb_parms*)&((skb)->cb)) |
| #define UNIXCREDS(skb) (&UNIXCB((skb)).creds) |
| #define UNIXSID(skb) (&UNIXCB((skb)).secid) |
| |
| #define unix_state_lock(s) spin_lock(&unix_sk(s)->lock) |
| #define unix_state_unlock(s) spin_unlock(&unix_sk(s)->lock) |
| #define unix_state_lock_nested(s) \ |
| spin_lock_nested(&unix_sk(s)->lock, \ |
| SINGLE_DEPTH_NESTING) |
| |
| #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 mutex readlock; |
| struct sock *peer; |
| struct sock *other; |
| struct list_head link; |
| atomic_long_t inflight; |
| spinlock_t lock; |
| unsigned int gc_candidate : 1; |
| wait_queue_head_t peer_wait; |
| }; |
| #define unix_sk(__sk) ((struct unix_sock *)__sk) |
| |
| #ifdef CONFIG_SYSCTL |
| extern int unix_sysctl_register(struct net *net); |
| extern 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 |
| #endif |
| #endif |