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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /include/net/af_unix.h | |
parent | Initial commit. (diff) | |
download | linux-upstream.tar.xz linux-upstream.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/net/af_unix.h')
-rw-r--r-- | include/net/af_unix.h | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/include/net/af_unix.h b/include/net/af_unix.h new file mode 100644 index 000000000..f42fdddec --- /dev/null +++ b/include/net/af_unix.h @@ -0,0 +1,92 @@ +/* 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> + +void unix_inflight(struct user_struct *user, struct file *fp); +void unix_notinflight(struct user_struct *user, struct file *fp); +void unix_destruct_scm(struct sk_buff *skb); +void unix_gc(void); +void wait_for_unix_gc(void); +struct sock *unix_get_socket(struct file *filp); +struct sock *unix_peer_get(struct sock *sk); + +#define UNIX_HASH_SIZE 256 +#define UNIX_HASH_BITS 8 + +extern unsigned int unix_tot_inflight; +extern spinlock_t unix_table_lock; +extern struct hlist_head unix_socket_table[2 * UNIX_HASH_SIZE]; + +struct unix_address { + refcount_t refcnt; + int len; + unsigned int hash; + 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; +}; + +#define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb)) + +#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) + +/* 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 list_head link; + atomic_long_t inflight; + spinlock_t lock; + unsigned long gc_flags; +#define UNIX_GC_CANDIDATE 0 +#define UNIX_GC_MAYBE_CYCLE 1 + struct socket_wq peer_wq; + wait_queue_entry_t peer_wake; + struct scm_stat scm_stat; +}; + +static inline struct unix_sock *unix_sk(const struct sock *sk) +{ + return (struct unix_sock *)sk; +} + +#define peer_wait peer_wq.wait + +long unix_inq_len(struct sock *sk); +long unix_outq_len(struct sock *sk); + +#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 +#endif |