uipc_usrreq.c File Reference

#include <sys/cdefs.h>
#include "opt_ddb.h"
#include <sys/param.h>
#include <sys/domain.h>
#include <sys/fcntl.h>
#include <sys/malloc.h>
#include <sys/eventhandler.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mbuf.h>
#include <sys/mount.h>
#include <sys/mutex.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/protosw.h>
#include <sys/queue.h>
#include <sys/resourcevar.h>
#include <sys/rwlock.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/signalvar.h>
#include <sys/stat.h>
#include <sys/sx.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/taskqueue.h>
#include <sys/un.h>
#include <sys/unpcb.h>
#include <sys/vnode.h>
#include <net/vnet.h>
#include <security/mac/mac_framework.h>
#include <vm/uma.h>

Include dependency graph for uipc_usrreq.c:

Go to the source code of this file.

Data Structures
struct	unp_defer

Macros
#define	PIPSIZ   8192
#define	UNP_LINK_LOCK_INIT()
#define	UNP_LINK_LOCK_ASSERT()
#define	UNP_LINK_UNLOCK_ASSERT()
#define	UNP_LINK_RLOCK()   rw_rlock(&unp_link_rwlock)
#define	UNP_LINK_RUNLOCK()   rw_runlock(&unp_link_rwlock)
#define	UNP_LINK_WLOCK()   rw_wlock(&unp_link_rwlock)
#define	UNP_LINK_WUNLOCK()   rw_wunlock(&unp_link_rwlock)
#define	UNP_LINK_WLOCK_ASSERT()
#define	UNP_LIST_LOCK_INIT()
#define	UNP_LIST_LOCK()   mtx_lock(&unp_list_lock)
#define	UNP_LIST_UNLOCK()   mtx_unlock(&unp_list_lock)
#define	UNP_DEFERRED_LOCK_INIT()
#define	UNP_DEFERRED_LOCK()   mtx_lock(&unp_defers_lock)
#define	UNP_DEFERRED_UNLOCK()   mtx_unlock(&unp_defers_lock)
#define	UNP_PCB_LOCK_INIT(unp)
#define	UNP_PCB_LOCK_DESTROY(unp)   mtx_destroy(&(unp)->unp_mtx)
#define	UNP_PCB_LOCK(unp)   mtx_lock(&(unp)->unp_mtx)
#define	UNP_PCB_UNLOCK(unp)   mtx_unlock(&(unp)->unp_mtx)
#define	UNP_PCB_LOCK_ASSERT(unp)   mtx_assert(&(unp)->unp_mtx, MA_OWNED)
#define	OPTSET(bit)

Functions
	__FBSDID ("$BSDSUniX$")
static	SLIST_HEAD (unp_defer)
static	SYSCTL_NODE (_net, PF_LOCAL, local, CTLFLAG_RW, 0,"Local domain")
static	SYSCTL_NODE (_net_local, SOCK_STREAM, stream, CTLFLAG_RW, 0,"SOCK_STREAM")
static	SYSCTL_NODE (_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW, 0,"SOCK_DGRAM")
static	SYSCTL_NODE (_net_local, SOCK_SEQPACKET, seqpacket, CTLFLAG_RW, 0,"SOCK_SEQPACKET")
	SYSCTL_ULONG (_net_local_stream, OID_AUTO, sendspace, CTLFLAG_RW,&unpst_sendspace, 0,"Default stream send space.")
	SYSCTL_ULONG (_net_local_stream, OID_AUTO, recvspace, CTLFLAG_RW,&unpst_recvspace, 0,"Default stream receive space.")
	SYSCTL_ULONG (_net_local_dgram, OID_AUTO, maxdgram, CTLFLAG_RW,&unpdg_sendspace, 0,"Default datagram send space.")
	SYSCTL_ULONG (_net_local_dgram, OID_AUTO, recvspace, CTLFLAG_RW,&unpdg_recvspace, 0,"Default datagram receive space.")
	SYSCTL_ULONG (_net_local_seqpacket, OID_AUTO, maxseqpacket, CTLFLAG_RW,&unpsp_sendspace, 0,"Default seqpacket send space.")
	SYSCTL_ULONG (_net_local_seqpacket, OID_AUTO, recvspace, CTLFLAG_RW,&unpsp_recvspace, 0,"Default seqpacket receive space.")
	SYSCTL_INT (_net_local, OID_AUTO, inflight, CTLFLAG_RD,&unp_rights, 0,"File descriptors in flight.")
	SYSCTL_INT (_net_local, OID_AUTO, deferred, CTLFLAG_RD,&unp_defers_count, 0,"File descriptors deferred to taskqueue for close.")
static int	uipc_connect2 (struct socket *, struct socket *)
static int	uipc_ctloutput (struct socket *, struct sockopt *)
static int	unp_connect (struct socket *, struct sockaddr *, struct thread *)
static int	unp_connect2 (struct socket *so, struct socket *so2, int)
static void	unp_disconnect (struct unpcb *unp, struct unpcb *unp2)
static void	unp_dispose (struct mbuf *)
static void	unp_shutdown (struct unpcb *)
static void	unp_drop (struct unpcb *, int)
static void	unp_gc (__unused void *, int)
static void	unp_scan (struct mbuf *, void(*)(struct file *))
static void	unp_discard (struct file *)
static void	unp_freerights (struct file **, int)
static void	unp_init (void)
static int	unp_internalize (struct mbuf **, struct thread *)
static void	unp_internalize_fp (struct file *)
static int	unp_externalize (struct mbuf *, struct mbuf **)
static int	unp_externalize_fp (struct file *)
static struct mbuf *	unp_addsockcred (struct thread *, struct mbuf *)
static void	unp_process_defers (void *__unused, int)
	DOMAIN_SET (local)
static void	uipc_abort (struct socket *so)
static int	uipc_accept (struct socket *so, struct sockaddr **nam)
static int	uipc_attach (struct socket *so, int proto, struct thread *td)
static int	uipc_bind (struct socket *so, struct sockaddr *nam, struct thread *td)
static int	uipc_connect (struct socket *so, struct sockaddr *nam, struct thread *td)
static void	uipc_close (struct socket *so)
static void	uipc_detach (struct socket *so)
static int	uipc_disconnect (struct socket *so)
static int	uipc_listen (struct socket *so, int backlog, struct thread *td)
static int	uipc_peeraddr (struct socket *so, struct sockaddr **nam)
static int	uipc_rcvd (struct socket *so, int flags)
static int	uipc_send (struct socket *so, int flags, struct mbuf *m, struct sockaddr *nam, struct mbuf *control, struct thread *td)
static int	uipc_sense (struct socket *so, struct stat *sb)
static int	uipc_shutdown (struct socket *so)
static int	uipc_sockaddr (struct socket *so, struct sockaddr **nam)
static int	unp_pcblist (SYSCTL_HANDLER_ARGS)
	SYSCTL_PROC (_net_local_dgram, OID_AUTO, pcblist, CTLTYPE_OPAQUE|CTLFLAG_RD,(void *)(intptr_t) SOCK_DGRAM, 0, unp_pcblist,"S,xunpcb","List of active local datagram sockets")
	SYSCTL_PROC (_net_local_stream, OID_AUTO, pcblist, CTLTYPE_OPAQUE|CTLFLAG_RD,(void *)(intptr_t) SOCK_STREAM, 0, unp_pcblist,"S,xunpcb","List of active local stream sockets")
	SYSCTL_PROC (_net_local_seqpacket, OID_AUTO, pcblist, CTLTYPE_OPAQUE|CTLFLAG_RD,(void *)(intptr_t) SOCK_SEQPACKET, 0, unp_pcblist,"S,xunpcb","List of active local seqpacket sockets")
static void	unp_zone_change (void *tag)
static struct unpcb *	fptounp (struct file *fp)
static void	unp_process_defers (void *arg __unused, int pending)
static void	unp_accessable (struct file *fp)
static void	unp_gc_process (struct unpcb *unp)
	SYSCTL_INT (_net_local, OID_AUTO, recycled, CTLFLAG_RD,&unp_recycled, 0,"Number of unreachable sockets claimed by the garbage collector.")
	SYSCTL_INT (_net_local, OID_AUTO, taskcount, CTLFLAG_RD,&unp_taskcount, 0,"Number of times the garbage collector has run.")
void	vfs_unp_reclaim (struct vnode *vp)

Variables
static uma_zone_t	unp_zone
static unp_gen_t	unp_gencnt
static u_int	unp_count
static ino_t	unp_ino
static int	unp_rights
static struct unp_head	unp_shead
static struct unp_head	unp_dhead
static struct unp_head	unp_sphead
static struct timeout_task	unp_gc_task
static struct task	unp_defer_task
static u_long	unpst_sendspace = PIPSIZ
static u_long	unpst_recvspace = PIPSIZ
static u_long	unpdg_sendspace = 2*1024
static u_long	unpdg_recvspace = 4*1024
static u_long	unpsp_sendspace = PIPSIZ
static u_long	unpsp_recvspace = PIPSIZ
static struct rwlock	unp_link_rwlock
static struct mtx	unp_list_lock
static struct mtx	unp_defers_lock
static struct domain	localdomain
static struct pr_usrreqs uipc_usrreqs_dgram	uipc_usrreqs_stream
static struct pr_usrreqs	uipc_usrreqs_seqpacket
static struct protosw	localsw []
static struct pr_usrreqs	uipc_usrreqs_dgram
static int	unp_marked
static int	unp_unreachable
static int	unp_recycled
static int	unp_taskcount

Macro Definition Documentation

#define OPTSET

(

bit

)

Value:

do {                                            \
	UNP_PCB_LOCK(unp);                                             \
        if (optval)                                                     \
                unp->unp_flags |= bit;                                  \
        else                                                            \
                unp->unp_flags &= ~bit;                                 \
	UNP_PCB_UNLOCK(unp);                                           \
} while (0)

Referenced by uipc_ctloutput().

#define PIPSIZ   8192

Definition at line 153 of file uipc_usrreq.c.

#define UNP_DEFERRED_LOCK

(

)

mtx_lock(&unp_defers_lock)

Definition at line 259 of file uipc_usrreq.c.

Referenced by unp_discard(), and unp_process_defers().

#define UNP_DEFERRED_LOCK_INIT

(

)

Value:

mtx_init(&unp_defers_lock, \
                                            "unp_defer", NULL, MTX_DEF)

Definition at line 257 of file uipc_usrreq.c.

Referenced by unp_init().

#define UNP_DEFERRED_UNLOCK

(

)

mtx_unlock(&unp_defers_lock)

Definition at line 260 of file uipc_usrreq.c.

Referenced by unp_discard(), and unp_process_defers().

#define UNP_LINK_LOCK_ASSERT

(

)

Value:

rw_assert(&unp_link_rwlock,     \
                                            RA_LOCKED)

Definition at line 240 of file uipc_usrreq.c.

#define UNP_LINK_LOCK_INIT

(

)

Value:

rw_init(&unp_link_rwlock,       \
                                            "unp_link_rwlock")

Definition at line 237 of file uipc_usrreq.c.

Referenced by unp_init().

#define UNP_LINK_RLOCK

(

)

rw_rlock(&unp_link_rwlock)

Definition at line 245 of file uipc_usrreq.c.

Referenced by uipc_accept(), uipc_peeraddr(), uipc_send(), uipc_sense(), and unp_gc().

#define UNP_LINK_RUNLOCK

(

)

rw_runlock(&unp_link_rwlock)

Definition at line 246 of file uipc_usrreq.c.

Referenced by uipc_accept(), uipc_peeraddr(), uipc_send(), uipc_sense(), and unp_gc().

#define UNP_LINK_UNLOCK_ASSERT

(

)

Value:

rw_assert(&unp_link_rwlock,     \
                                            RA_UNLOCKED)

Definition at line 242 of file uipc_usrreq.c.

Referenced by unp_externalize(), and unp_internalize().

#define UNP_LINK_WLOCK

(

)

rw_wlock(&unp_link_rwlock)

Definition at line 247 of file uipc_usrreq.c.

Referenced by uipc_abort(), uipc_bind(), uipc_close(), uipc_connect(), uipc_connect2(), uipc_detach(), uipc_disconnect(), uipc_send(), uipc_shutdown(), unp_connect(), unp_externalize_fp(), unp_internalize_fp(), and vfs_unp_reclaim().

#define UNP_LINK_WLOCK_ASSERT

(

)

Value:

rw_assert(&unp_link_rwlock,     \
                                            RA_WLOCKED)

Definition at line 249 of file uipc_usrreq.c.

Referenced by uipc_send(), unp_connect(), unp_connect2(), unp_disconnect(), unp_drop(), and unp_shutdown().

#define UNP_LINK_WUNLOCK

(

)

rw_wunlock(&unp_link_rwlock)

Definition at line 248 of file uipc_usrreq.c.

Referenced by uipc_abort(), uipc_bind(), uipc_close(), uipc_connect(), uipc_connect2(), uipc_detach(), uipc_disconnect(), uipc_send(), uipc_shutdown(), unp_connect(), unp_externalize_fp(), unp_internalize_fp(), and vfs_unp_reclaim().

#define UNP_LIST_LOCK

(

)

mtx_lock(&unp_list_lock)

Definition at line 254 of file uipc_usrreq.c.

Referenced by uipc_attach(), uipc_detach(), unp_gc(), and unp_pcblist().

#define UNP_LIST_LOCK_INIT

(

)

Value:

mtx_init(&unp_list_lock,        \
                                            "unp_list_lock", NULL, MTX_DEF)

Definition at line 252 of file uipc_usrreq.c.

Referenced by unp_init().

#define UNP_LIST_UNLOCK

(

)

mtx_unlock(&unp_list_lock)

Definition at line 255 of file uipc_usrreq.c.

Referenced by uipc_attach(), uipc_detach(), unp_gc(), and unp_pcblist().

#define UNP_PCB_LOCK

(

unp

)

mtx_lock(&(unp)->unp_mtx)

Definition at line 266 of file uipc_usrreq.c.

Referenced by uipc_abort(), uipc_accept(), uipc_bind(), uipc_close(), uipc_connect2(), uipc_ctloutput(), uipc_detach(), uipc_disconnect(), uipc_listen(), uipc_peeraddr(), uipc_rcvd(), uipc_send(), uipc_sense(), uipc_shutdown(), uipc_sockaddr(), unp_connect(), unp_drop(), unp_pcblist(), and vfs_unp_reclaim().

#define UNP_PCB_LOCK_ASSERT

(

unp

)

mtx_assert(&(unp)->unp_mtx, MA_OWNED)

Definition at line 268 of file uipc_usrreq.c.

Referenced by unp_connect2(), unp_disconnect(), unp_drop(), and unp_shutdown().

#define UNP_PCB_LOCK_DESTROY

(

unp

)

mtx_destroy(&(unp)->unp_mtx)

Definition at line 265 of file uipc_usrreq.c.

Referenced by uipc_detach(), and unp_pcblist().

#define UNP_PCB_LOCK_INIT

(

unp

)

Value:

mtx_init(&(unp)->unp_mtx,       \
                                            "unp_mtx", "unp_mtx",       \
                                            MTX_DUPOK|MTX_DEF|MTX_RECURSE)

Definition at line 262 of file uipc_usrreq.c.

Referenced by uipc_attach().

#define UNP_PCB_UNLOCK

(

unp

)

mtx_unlock(&(unp)->unp_mtx)

Definition at line 267 of file uipc_usrreq.c.

Referenced by uipc_abort(), uipc_accept(), uipc_bind(), uipc_close(), uipc_connect2(), uipc_ctloutput(), uipc_detach(), uipc_disconnect(), uipc_listen(), uipc_peeraddr(), uipc_rcvd(), uipc_send(), uipc_sense(), uipc_shutdown(), uipc_sockaddr(), unp_connect(), unp_drop(), unp_pcblist(), and vfs_unp_reclaim().

Function Documentation

__FBSDID

(

"$BSDSUniX$"

)

DOMAIN_SET

(

local

)

static struct unpcb* fptounp ( struct file *  fp )

static

Definition at line 2015 of file uipc_usrreq.c.

Referenced by unp_accessable(), unp_externalize_fp(), and unp_internalize_fp().

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static SLIST_HEAD ( unp_defer  )

static

Definition at line 123 of file uipc_usrreq.c.

Referenced by unp_process_defers().

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SYSCTL_INT	(	_net_local	,
		OID_AUTO	,
		inflight	,
		CTLFLAG_RD	,
		&	unp_rights,
		0	,
		"File descriptors in flight."
	)

SYSCTL_INT	(	_net_local	,
		OID_AUTO	,
		deferred	,
		CTLFLAG_RD	,
		&	unp_defers_count,
		0	,
		"File descriptors deferred to taskqueue for close."
	)

SYSCTL_INT	(	_net_local	,
		OID_AUTO	,
		recycled	,
		CTLFLAG_RD	,
		&	unp_recycled,
		0	,
		"Number of unreachable sockets claimed by the garbage collector."
	)

SYSCTL_INT	(	_net_local	,
		OID_AUTO	,
		taskcount	,
		CTLFLAG_RD	,
		&	unp_taskcount,
		0	,
		"Number of times the garbage collector has run."
	)

static SYSCTL_NODE ( _net  , PF_LOCAL  , local  , CTLFLAG_RW  , 0  , "Local domain"    )

static

static SYSCTL_NODE ( _net_local  , SOCK_STREAM  , stream  , CTLFLAG_RW  , 0  , "SOCK_STREAM"    )

static

static SYSCTL_NODE ( _net_local  , SOCK_DGRAM  , dgram  , CTLFLAG_RW  , 0  , "SOCK_DGRAM"    )

static

static SYSCTL_NODE ( _net_local  , SOCK_SEQPACKET  , seqpacket  , CTLFLAG_RW  , 0  , "SOCK_SEQPACKET"    )

static

SYSCTL_PROC	(	_net_local_dgram	,
		OID_AUTO	,
		pcblist	,
		CTLTYPE_OPAQUE|	CTLFLAG_RD,
		(void *)(intptr_t)	SOCK_DGRAM,
		0	,
		unp_pcblist	,
		"	S,
		xunpcb"	,
		"List of active local datagram sockets"
	)

SYSCTL_PROC	(	_net_local_stream	,
		OID_AUTO	,
		pcblist	,
		CTLTYPE_OPAQUE|	CTLFLAG_RD,
		(void *)(intptr_t)	SOCK_STREAM,
		0	,
		unp_pcblist	,
		"	S,
		xunpcb"	,
		"List of active local stream sockets"
	)

SYSCTL_PROC	(	_net_local_seqpacket	,
		OID_AUTO	,
		pcblist	,
		CTLTYPE_OPAQUE|	CTLFLAG_RD,
		(void *)(intptr_t)	SOCK_SEQPACKET,
		0	,
		unp_pcblist	,
		"	S,
		xunpcb"	,
		"List of active local seqpacket sockets"
	)

SYSCTL_ULONG	(	_net_local_stream	,
		OID_AUTO	,
		sendspace	,
		CTLFLAG_RW	,
		&	unpst_sendspace,
		0	,
		"Default stream send space."
	)

SYSCTL_ULONG	(	_net_local_stream	,
		OID_AUTO	,
		recvspace	,
		CTLFLAG_RW	,
		&	unpst_recvspace,
		0	,
		"Default stream receive space."
	)

SYSCTL_ULONG	(	_net_local_dgram	,
		OID_AUTO	,
		maxdgram	,
		CTLFLAG_RW	,
		&	unpdg_sendspace,
		0	,
		"Default datagram send space."
	)

SYSCTL_ULONG	(	_net_local_dgram	,
		OID_AUTO	,
		recvspace	,
		CTLFLAG_RW	,
		&	unpdg_recvspace,
		0	,
		"Default datagram receive space."
	)

SYSCTL_ULONG	(	_net_local_seqpacket	,
		OID_AUTO	,
		maxseqpacket	,
		CTLFLAG_RW	,
		&	unpsp_sendspace,
		0	,
		"Default seqpacket send space."
	)

SYSCTL_ULONG	(	_net_local_seqpacket	,
		OID_AUTO	,
		recvspace	,
		CTLFLAG_RW	,
		&	unpsp_recvspace,
		0	,
		"Default seqpacket receive space."
	)

static void uipc_abort ( struct socket *  so )

static

Definition at line 340 of file uipc_usrreq.c.

References unp_drop(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_accept ( struct socket *  so, struct sockaddr **  nam  )

static

Definition at line 360 of file uipc_usrreq.c.

References malloc(), UNP_LINK_RLOCK, UNP_LINK_RUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_attach ( struct socket *  so, int  proto, struct thread *  td  )

static

Definition at line 389 of file uipc_usrreq.c.

References panic(), soreserve(), unp_count, unp_dhead, unp_gencnt, UNP_LIST_LOCK, UNP_LIST_UNLOCK, UNP_PCB_LOCK_INIT, unp_shead, unp_sphead, unp_zone, unpdg_recvspace, unpdg_sendspace, unpsp_recvspace, unpsp_sendspace, unpst_recvspace, and unpst_sendspace.

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static int uipc_bind ( struct socket *  so, struct sockaddr *  nam, struct thread *  td  )

static

Definition at line 454 of file uipc_usrreq.c.

References buf, free(), malloc(), namei(), NDFREE(), sodupsockaddr(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, UNP_PCB_UNLOCK, vn_finished_write(), vn_start_write(), vput(), and vrele().

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static void uipc_close ( struct socket *  so )

static

Definition at line 581 of file uipc_usrreq.c.

References unp_disconnect(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_connect ( struct socket *  so, struct sockaddr *  nam, struct thread *  td  )

static

Definition at line 569 of file uipc_usrreq.c.

References unp_connect(), UNP_LINK_WLOCK, and UNP_LINK_WUNLOCK.

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static int uipc_connect2 ( struct socket *  so1, struct socket *  so2  )

static

Definition at line 601 of file uipc_usrreq.c.

References unp_connect2(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_ctloutput ( struct socket *  so, struct sockopt *  sopt  )

static

Definition at line 1158 of file uipc_usrreq.c.

References OPTSET, sooptcopyin(), sooptcopyout(), UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static void uipc_detach ( struct socket *  so )

static

Definition at line 621 of file uipc_usrreq.c.

References free(), taskqueue_enqueue_timeout(), unp_count, unp_disconnect(), unp_drop(), unp_gc_task, unp_gencnt, UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_LIST_LOCK, UNP_LIST_UNLOCK, UNP_PCB_LOCK, UNP_PCB_LOCK_DESTROY, UNP_PCB_UNLOCK, unp_rights, unp_zone, and vrele().

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static int uipc_disconnect ( struct socket *  so )

static

Definition at line 690 of file uipc_usrreq.c.

References unp_disconnect(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_listen ( struct socket *  so, int  backlog, struct thread *  td  )

static

Definition at line 711 of file uipc_usrreq.c.

References cru2x(), solisten_proto(), solisten_proto_check(), UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_peeraddr ( struct socket *  so, struct sockaddr **  nam  )

static

Definition at line 738 of file uipc_usrreq.c.

References malloc(), UNP_LINK_RLOCK, UNP_LINK_RUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_rcvd ( struct socket *  so, int  flags  )

static

Definition at line 771 of file uipc_usrreq.c.

References chgsbsize(), panic(), UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static int uipc_send ( struct socket *  so, int  flags, struct mbuf *  m, struct sockaddr *  nam, struct mbuf *  control, struct thread *  td  )

static

Definition at line 818 of file uipc_usrreq.c.

References chgsbsize(), m_freem(), panic(), sbappend_locked(), sbappendaddr_locked(), sbappendaddr_nospacecheck_locked(), sbappendcontrol_locked(), socantsendmore(), unp_addsockcred(), unp_connect(), unp_disconnect(), unp_dispose(), unp_internalize(), UNP_LINK_RLOCK, UNP_LINK_RUNLOCK, UNP_LINK_WLOCK, UNP_LINK_WLOCK_ASSERT, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, UNP_PCB_UNLOCK, and unp_shutdown().

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static int uipc_sense ( struct socket *  so, struct stat *  sb  )

static

Definition at line 1034 of file uipc_usrreq.c.

References unp_ino, UNP_LINK_RLOCK, UNP_LINK_RUNLOCK, UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

static int uipc_shutdown ( struct socket *  so )

static

Definition at line 1061 of file uipc_usrreq.c.

References socantsendmore(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, UNP_PCB_UNLOCK, and unp_shutdown().

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static int uipc_sockaddr ( struct socket *  so, struct sockaddr **  nam  )

static

Definition at line 1078 of file uipc_usrreq.c.

References malloc(), UNP_PCB_LOCK, and UNP_PCB_UNLOCK.

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static void unp_accessable ( struct file *  fp )

static

Definition at line 2113 of file uipc_usrreq.c.

References fptounp().

Referenced by unp_gc_process().

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static struct mbuf * unp_addsockcred ( struct thread *  td, struct mbuf *  control  )

static

Definition at line 1966 of file uipc_usrreq.c.

References sbcreatecontrol().

Referenced by uipc_send().

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static int unp_connect ( struct socket *  so, struct sockaddr *  nam, struct thread *  td  )

static

Definition at line 1252 of file uipc_usrreq.c.

References buf, cru2x(), free(), Giant, malloc(), namei(), NDFREE(), sonewconn(), unp_connect2(), UNP_LINK_WLOCK, UNP_LINK_WLOCK_ASSERT, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, UNP_PCB_UNLOCK, and vput().

Referenced by uipc_connect(), and uipc_send().

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static int unp_connect2 ( struct socket *  so, struct socket *  so2, int  req  )

static

Definition at line 1413 of file uipc_usrreq.c.

References panic(), soisconnected(), soisconnecting(), UNP_LINK_WLOCK_ASSERT, and UNP_PCB_LOCK_ASSERT.

Referenced by uipc_connect2(), and unp_connect().

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static void unp_discard ( struct file *  fp )

static

Definition at line 2029 of file uipc_usrreq.c.

References closef(), malloc(), taskqueue_enqueue(), unp_defer_task, UNP_DEFERRED_LOCK, UNP_DEFERRED_UNLOCK, and unp_externalize_fp().

Referenced by unp_dispose(), and unp_freerights().

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static void unp_disconnect ( struct unpcb *  unp, struct unpcb *  unp2  )

static

Definition at line 1455 of file uipc_usrreq.c.

References soisdisconnected(), UNP_LINK_WLOCK_ASSERT, and UNP_PCB_LOCK_ASSERT.

Referenced by uipc_close(), uipc_detach(), uipc_disconnect(), uipc_send(), and unp_drop().

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static void unp_dispose ( struct mbuf *  m )

static

Definition at line 2266 of file uipc_usrreq.c.

References unp_discard(), and unp_scan().

Referenced by uipc_send().

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static void unp_drop ( struct unpcb *  unp, int  errno  )

static

Definition at line 1654 of file uipc_usrreq.c.

References unp_disconnect(), UNP_LINK_WLOCK_ASSERT, UNP_PCB_LOCK, UNP_PCB_LOCK_ASSERT, and UNP_PCB_UNLOCK.

Referenced by uipc_abort(), and uipc_detach().

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static int unp_externalize ( struct mbuf *  control, struct mbuf **  controlp  )

static

Definition at line 1685 of file uipc_usrreq.c.

References fdallocn(), m_freem(), sbcreatecontrol(), unp_externalize_fp(), unp_freerights(), and UNP_LINK_UNLOCK_ASSERT.

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static int unp_externalize_fp ( struct file *  fp )

static

Definition at line 2088 of file uipc_usrreq.c.

References fptounp(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, and unp_rights.

Referenced by unp_discard(), and unp_externalize().

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static void unp_freerights ( struct file **  rp, int  fdcount  )

static

Definition at line 1672 of file uipc_usrreq.c.

References unp_discard().

Referenced by unp_externalize().

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static void unp_gc ( __unused void *  arg, int  pending  )

static

Definition at line 2180 of file uipc_usrreq.c.

References free(), malloc(), sorflush(), unp_dhead, unp_gc_process(), UNP_LINK_RLOCK, UNP_LINK_RUNLOCK, UNP_LIST_LOCK, UNP_LIST_UNLOCK, unp_shead, and unp_sphead.

Referenced by unp_init().

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static void unp_gc_process ( struct unpcb *  unp )

static

Definition at line 2127 of file uipc_usrreq.c.

References unp_accessable(), and unp_scan().

Referenced by unp_gc().

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static void unp_init ( void  )

static

Definition at line 1792 of file uipc_usrreq.c.

References maxsockets, panic(), unp_defer_task, UNP_DEFERRED_LOCK_INIT, unp_dhead, unp_gc(), unp_gc_task, UNP_LINK_LOCK_INIT, UNP_LIST_LOCK_INIT, unp_process_defers(), unp_shead, unp_sphead, unp_zone, and unp_zone_change().

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static int unp_internalize ( struct mbuf **  controlp, struct thread *  td  )

static

Definition at line 1818 of file uipc_usrreq.c.

References bintime(), fd, m_freem(), microtime(), sbcreatecontrol(), unp_internalize_fp(), and UNP_LINK_UNLOCK_ASSERT.

Referenced by uipc_send().

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static void unp_internalize_fp ( struct file *  fp )

static

Definition at line 2073 of file uipc_usrreq.c.

References fptounp(), UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, and unp_rights.

Referenced by unp_internalize().

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static int unp_pcblist ( SYSCTL_HANDLER_ARGS  )

static

Definition at line 1492 of file uipc_usrreq.c.

References cr_cansee(), free(), malloc(), panic(), so_gencnt, sotoxsocket(), unp_count, unp_dhead, unp_gencnt, UNP_LIST_LOCK, UNP_LIST_UNLOCK, UNP_PCB_LOCK, UNP_PCB_LOCK_DESTROY, UNP_PCB_UNLOCK, unp_shead, unp_sphead, and unp_zone.

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static void unp_process_defers ( void *  __unused, int    )

static

Referenced by unp_init().

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static void unp_process_defers ( void *arg  __unused, int  pending  )

static

Definition at line 2046 of file uipc_usrreq.c.

References closef(), count, free(), SLIST_HEAD(), UNP_DEFERRED_LOCK, and UNP_DEFERRED_UNLOCK.

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static void unp_scan ( struct mbuf *  m0, void(*)(struct file *)  op  )

static

Definition at line 2274 of file uipc_usrreq.c.

Referenced by unp_dispose(), and unp_gc_process().

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static void unp_shutdown ( struct unpcb *  unp )

static

Definition at line 1636 of file uipc_usrreq.c.

References socantrcvmore(), UNP_LINK_WLOCK_ASSERT, and UNP_PCB_LOCK_ASSERT.

Referenced by uipc_send(), and uipc_shutdown().

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static void unp_zone_change ( void *  tag )

static

Definition at line 1785 of file uipc_usrreq.c.

References maxsockets, and unp_zone.

Referenced by unp_init().

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void vfs_unp_reclaim

(

struct vnode *

vp

)

Definition at line 2328 of file uipc_usrreq.c.

References UNP_LINK_WLOCK, UNP_LINK_WUNLOCK, UNP_PCB_LOCK, UNP_PCB_UNLOCK, and vunref().

Referenced by vgonel().

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Variable Documentation

static struct domain localdomain

static

Initial value:

= {
        .dom_family =           AF_LOCAL,
        .dom_name =             "local",
        .dom_init =             unp_init,
        .dom_externalize =      unp_externalize,
        .dom_dispose =          unp_dispose,
        .dom_protosw =          localsw,
        .dom_protoswNPROTOSW =  &localsw[sizeof(localsw)/sizeof(localsw[0])]
}

Definition at line 294 of file uipc_usrreq.c.

struct protosw localsw[]

static

Initial value:

= {
{
        .pr_type =              SOCK_STREAM,
        .pr_domain =            &localdomain,
        .pr_flags =             PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
        .pr_ctloutput =         &uipc_ctloutput,
        .pr_usrreqs =           &uipc_usrreqs_stream
},
{
        .pr_type =              SOCK_DGRAM,
        .pr_domain =            &localdomain,
        .pr_flags =             PR_ATOMIC|PR_ADDR|PR_RIGHTS,
        .pr_ctloutput =         &uipc_ctloutput,
        .pr_usrreqs =           &uipc_usrreqs_dgram
},
{
        .pr_type =              SOCK_SEQPACKET,
        .pr_domain =            &localdomain,

        
        .pr_flags =             PR_ADDR|PR_ATOMIC|PR_CONNREQUIRED|PR_WANTRCVD|
                                    PR_RIGHTS,
        .pr_ctloutput =         &uipc_ctloutput,
        .pr_usrreqs =           &uipc_usrreqs_seqpacket,
},
}

Definition at line 297 of file uipc_usrreq.c.

struct pr_usrreqs uipc_usrreqs_dgram

static

Initial value:

= {
        .pru_abort =            uipc_abort,
        .pru_accept =           uipc_accept,
        .pru_attach =           uipc_attach,
        .pru_bind =             uipc_bind,
        .pru_connect =          uipc_connect,
        .pru_connect2 =         uipc_connect2,
        .pru_detach =           uipc_detach,
        .pru_disconnect =       uipc_disconnect,
        .pru_listen =           uipc_listen,
        .pru_peeraddr =         uipc_peeraddr,
        .pru_rcvd =             uipc_rcvd,
        .pru_send =             uipc_send,
        .pru_sense =            uipc_sense,
        .pru_shutdown =         uipc_shutdown,
        .pru_sockaddr =         uipc_sockaddr,
        .pru_soreceive =        soreceive_dgram,
        .pru_close =            uipc_close,
}

Definition at line 1097 of file uipc_usrreq.c.

static struct pr_usrreqs uipc_usrreqs_seqpacket

static

Initial value:

= {
        .pru_abort =            uipc_abort,
        .pru_accept =           uipc_accept,
        .pru_attach =           uipc_attach,
        .pru_bind =             uipc_bind,
        .pru_connect =          uipc_connect,
        .pru_connect2 =         uipc_connect2,
        .pru_detach =           uipc_detach,
        .pru_disconnect =       uipc_disconnect,
        .pru_listen =           uipc_listen,
        .pru_peeraddr =         uipc_peeraddr,
        .pru_rcvd =             uipc_rcvd,
        .pru_send =             uipc_send,
        .pru_sense =            uipc_sense,
        .pru_shutdown =         uipc_shutdown,
        .pru_sockaddr =         uipc_sockaddr,
        .pru_soreceive =        soreceive_generic,      
        .pru_close =            uipc_close,
}

Definition at line 296 of file uipc_usrreq.c.

static struct pr_usrreqs uipc_usrreqs_stream

static

Initial value:

= {
        .pru_abort =            uipc_abort,
        .pru_accept =           uipc_accept,
        .pru_attach =           uipc_attach,
        .pru_bind =             uipc_bind,
        .pru_connect =          uipc_connect,
        .pru_connect2 =         uipc_connect2,
        .pru_detach =           uipc_detach,
        .pru_disconnect =       uipc_disconnect,
        .pru_listen =           uipc_listen,
        .pru_peeraddr =         uipc_peeraddr,
        .pru_rcvd =             uipc_rcvd,
        .pru_send =             uipc_send,
        .pru_sense =            uipc_sense,
        .pru_shutdown =         uipc_shutdown,
        .pru_sockaddr =         uipc_sockaddr,
        .pru_soreceive =        soreceive_generic,
        .pru_close =            uipc_close,
}

Definition at line 295 of file uipc_usrreq.c.

u_int unp_count

static

Definition at line 112 of file uipc_usrreq.c.

Referenced by uipc_attach(), uipc_detach(), and unp_pcblist().

struct task unp_defer_task

static

Definition at line 141 of file uipc_usrreq.c.

Referenced by unp_discard(), and unp_init().

struct mtx unp_defers_lock

static

Definition at line 235 of file uipc_usrreq.c.

struct unp_head unp_dhead

static

Definition at line 116 of file uipc_usrreq.c.

Referenced by uipc_attach(), unp_gc(), unp_init(), and unp_pcblist().

struct timeout_task unp_gc_task

static

Definition at line 134 of file uipc_usrreq.c.

Referenced by uipc_detach(), and unp_init().

unp_gen_t unp_gencnt

static

Definition at line 111 of file uipc_usrreq.c.

Referenced by uipc_attach(), uipc_detach(), and unp_pcblist().

ino_t unp_ino

static

Definition at line 113 of file uipc_usrreq.c.

Referenced by uipc_sense().

struct rwlock unp_link_rwlock

static

Definition at line 233 of file uipc_usrreq.c.

struct mtx unp_list_lock

static

Definition at line 234 of file uipc_usrreq.c.

int unp_marked

static

Definition at line 2109 of file uipc_usrreq.c.

int unp_recycled

static

Definition at line 2171 of file uipc_usrreq.c.

int unp_rights

static

Definition at line 114 of file uipc_usrreq.c.

Referenced by uipc_detach(), unp_externalize_fp(), and unp_internalize_fp().

struct unp_head unp_shead

static

Definition at line 115 of file uipc_usrreq.c.

Referenced by uipc_attach(), unp_gc(), unp_init(), and unp_pcblist().

struct unp_head unp_sphead

static

Definition at line 117 of file uipc_usrreq.c.

Referenced by uipc_attach(), unp_gc(), unp_init(), and unp_pcblist().

int unp_taskcount

static

Definition at line 2175 of file uipc_usrreq.c.

int unp_unreachable

static

Definition at line 2110 of file uipc_usrreq.c.

uma_zone_t unp_zone

static

Definition at line 110 of file uipc_usrreq.c.

Referenced by uipc_attach(), uipc_detach(), unp_init(), unp_pcblist(), and unp_zone_change().

u_long unpdg_recvspace = 4*1024

static

Definition at line 158 of file uipc_usrreq.c.

Referenced by uipc_attach().

u_long unpdg_sendspace = 2*1024

static

Definition at line 157 of file uipc_usrreq.c.

Referenced by uipc_attach().

u_long unpsp_recvspace = PIPSIZ

static

Definition at line 160 of file uipc_usrreq.c.

Referenced by uipc_attach().

u_long unpsp_sendspace = PIPSIZ

static

Definition at line 159 of file uipc_usrreq.c.

Referenced by uipc_attach().

u_long unpst_recvspace = PIPSIZ

static

Definition at line 156 of file uipc_usrreq.c.

Referenced by uipc_attach().

u_long unpst_sendspace = PIPSIZ

static

Definition at line 155 of file uipc_usrreq.c.

Referenced by uipc_attach().