Sockets have special handling for EPIPE on a write, that was spread out
into several places. Treating transient errors is also special - if
protocol is atomic, than we should ignore any changes to uio_resid, a
transient error means the write had completely failed (see d2b3a0ed31
).
- Provide sousrsend() that expects a valid uio, and leave sosend() for
kernel consumers only. Do all special error handling right here.
- In dofilewrite() don't do special handling of error for DTYPE_SOCKET.
- For send(2), write(2) and aio_write(2) call into sousrsend() and remove
error handling for kern_sendit(), soo_write() and soaio_process_job().
PR: 265087
Reported by: rz-rpi03 at h-ka.de
Reviewed by: markj
Differential revision: https://reviews.freebsd.org/D35863
604 lines
21 KiB
C
604 lines
21 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)socketvar.h 8.3 (Berkeley) 2/19/95
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*
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* $FreeBSD$
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*/
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#ifndef _SYS_SOCKETVAR_H_
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#define _SYS_SOCKETVAR_H_
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/*
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* Socket generation count type. Also used in xinpcb, xtcpcb, xunpcb.
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*/
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typedef uint64_t so_gen_t;
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#if defined(_KERNEL) || defined(_WANT_SOCKET)
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#include <sys/queue.h> /* for TAILQ macros */
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#include <sys/selinfo.h> /* for struct selinfo */
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#include <sys/_lock.h>
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#include <sys/_mutex.h>
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#include <sys/osd.h>
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#include <sys/_sx.h>
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#include <sys/sockbuf.h>
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#ifdef _KERNEL
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#include <sys/caprights.h>
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#include <sys/sockopt.h>
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#endif
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struct vnet;
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/*
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* Kernel structure per socket.
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* Contains send and receive buffer queues,
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* handle on protocol and pointer to protocol
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* private data and error information.
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*/
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typedef int so_upcall_t(struct socket *, void *, int);
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typedef void so_dtor_t(struct socket *);
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struct socket;
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enum socket_qstate {
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SQ_NONE = 0,
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SQ_INCOMP = 0x0800, /* on sol_incomp */
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SQ_COMP = 0x1000, /* on sol_comp */
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};
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/*-
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* Locking key to struct socket:
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* (a) constant after allocation, no locking required.
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* (b) locked by SOCK_LOCK(so).
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* (cr) locked by SOCK_RECVBUF_LOCK(so)
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* (cs) locked by SOCK_SENDBUF_LOCK(so)
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* (e) locked by SOLISTEN_LOCK() of corresponding listening socket.
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* (f) not locked since integer reads/writes are atomic.
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* (g) used only as a sleep/wakeup address, no value.
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* (h) locked by global mutex so_global_mtx.
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* (k) locked by KTLS workqueue mutex
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*/
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TAILQ_HEAD(accept_queue, socket);
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struct socket {
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struct mtx so_lock;
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volatile u_int so_count; /* (b / refcount) */
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struct selinfo so_rdsel; /* (b/cr) for so_rcv/so_comp */
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struct selinfo so_wrsel; /* (b/cs) for so_snd */
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int so_options; /* (b) from socket call, see socket.h */
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short so_type; /* (a) generic type, see socket.h */
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short so_state; /* (b) internal state flags SS_* */
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void *so_pcb; /* protocol control block */
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struct vnet *so_vnet; /* (a) network stack instance */
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struct protosw *so_proto; /* (a) protocol handle */
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short so_linger; /* time to linger close(2) */
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short so_timeo; /* (g) connection timeout */
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u_short so_error; /* (f) error affecting connection */
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u_short so_rerror; /* (f) error affecting connection */
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struct sigio *so_sigio; /* [sg] information for async I/O or
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out of band data (SIGURG) */
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struct ucred *so_cred; /* (a) user credentials */
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struct label *so_label; /* (b) MAC label for socket */
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/* NB: generation count must not be first. */
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so_gen_t so_gencnt; /* (h) generation count */
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void *so_emuldata; /* (b) private data for emulators */
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so_dtor_t *so_dtor; /* (b) optional destructor */
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struct osd osd; /* Object Specific extensions */
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/*
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* so_fibnum, so_user_cookie and friends can be used to attach
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* some user-specified metadata to a socket, which then can be
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* used by the kernel for various actions.
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* so_user_cookie is used by ipfw/dummynet.
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*/
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int so_fibnum; /* routing domain for this socket */
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uint32_t so_user_cookie;
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int so_ts_clock; /* type of the clock used for timestamps */
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uint32_t so_max_pacing_rate; /* (f) TX rate limit in bytes/s */
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/*
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* Mutexes to prevent interleaving of socket I/O. These have to be
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* outside of the socket buffers in order to interlock with listen(2).
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*/
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struct sx so_snd_sx __aligned(CACHE_LINE_SIZE);
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struct mtx so_snd_mtx;
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struct sx so_rcv_sx __aligned(CACHE_LINE_SIZE);
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struct mtx so_rcv_mtx;
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union {
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/* Regular (data flow) socket. */
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struct {
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/* (cr, cs) Receive and send buffers. */
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struct sockbuf so_rcv, so_snd;
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/* (e) Our place on accept queue. */
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TAILQ_ENTRY(socket) so_list;
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struct socket *so_listen; /* (b) */
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enum socket_qstate so_qstate; /* (b) */
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/* (b) cached MAC label for peer */
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struct label *so_peerlabel;
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u_long so_oobmark; /* chars to oob mark */
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/* (k) Our place on KTLS RX work queue. */
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STAILQ_ENTRY(socket) so_ktls_rx_list;
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};
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/*
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* Listening socket, where accepts occur, is so_listen in all
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* subsidiary sockets. If so_listen is NULL, socket is not
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* related to an accept. For a listening socket itself
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* sol_incomp queues partially completed connections, while
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* sol_comp is a queue of connections ready to be accepted.
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* If a connection is aborted and it has so_listen set, then
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* it has to be pulled out of either sol_incomp or sol_comp.
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* We allow connections to queue up based on current queue
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* lengths and limit on number of queued connections for this
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* socket.
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*/
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struct {
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/* (e) queue of partial unaccepted connections */
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struct accept_queue sol_incomp;
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/* (e) queue of complete unaccepted connections */
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struct accept_queue sol_comp;
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u_int sol_qlen; /* (e) sol_comp length */
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u_int sol_incqlen; /* (e) sol_incomp length */
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u_int sol_qlimit; /* (e) queue limit */
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/* accept_filter(9) optional data */
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struct accept_filter *sol_accept_filter;
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void *sol_accept_filter_arg; /* saved filter args */
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char *sol_accept_filter_str; /* saved user args */
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/* Optional upcall, for kernel socket. */
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so_upcall_t *sol_upcall; /* (e) */
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void *sol_upcallarg; /* (e) */
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/* Socket buffer parameters, to be copied to
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* dataflow sockets, accepted from this one. */
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int sol_sbrcv_lowat;
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int sol_sbsnd_lowat;
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u_int sol_sbrcv_hiwat;
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u_int sol_sbsnd_hiwat;
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short sol_sbrcv_flags;
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short sol_sbsnd_flags;
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sbintime_t sol_sbrcv_timeo;
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sbintime_t sol_sbsnd_timeo;
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/* Information tracking listen queue overflows. */
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struct timeval sol_lastover; /* (e) */
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int sol_overcount; /* (e) */
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};
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};
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};
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#endif /* defined(_KERNEL) || defined(_WANT_SOCKET) */
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/*
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* Socket state bits.
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*
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* Historically, these bits were all kept in the so_state field.
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* They are now split into separate, lock-specific fields.
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* so_state maintains basic socket state protected by the socket lock.
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* so_qstate holds information about the socket accept queues.
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* Each socket buffer also has a state field holding information
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* relevant to that socket buffer (can't send, rcv).
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* Many fields will be read without locks to improve performance and avoid
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* lock order issues. However, this approach must be used with caution.
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*/
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#define SS_ISCONNECTED 0x0002 /* socket connected to a peer */
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#define SS_ISCONNECTING 0x0004 /* in process of connecting to peer */
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#define SS_ISDISCONNECTING 0x0008 /* in process of disconnecting */
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#define SS_NBIO 0x0100 /* non-blocking ops */
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#define SS_ASYNC 0x0200 /* async i/o notify */
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#define SS_ISCONFIRMING 0x0400 /* deciding to accept connection req */
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#define SS_ISDISCONNECTED 0x2000 /* socket disconnected from peer */
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#ifdef _KERNEL
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#define SOCK_MTX(so) (&(so)->so_lock)
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#define SOCK_LOCK(so) mtx_lock(&(so)->so_lock)
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#define SOCK_OWNED(so) mtx_owned(&(so)->so_lock)
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#define SOCK_UNLOCK(so) mtx_unlock(&(so)->so_lock)
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#define SOCK_LOCK_ASSERT(so) mtx_assert(&(so)->so_lock, MA_OWNED)
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#define SOCK_UNLOCK_ASSERT(so) mtx_assert(&(so)->so_lock, MA_NOTOWNED)
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#define SOLISTENING(sol) (((sol)->so_options & SO_ACCEPTCONN) != 0)
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#define SOLISTEN_LOCK(sol) do { \
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mtx_lock(&(sol)->so_lock); \
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KASSERT(SOLISTENING(sol), \
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("%s: %p not listening", __func__, (sol))); \
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} while (0)
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#define SOLISTEN_TRYLOCK(sol) mtx_trylock(&(sol)->so_lock)
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#define SOLISTEN_UNLOCK(sol) do { \
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KASSERT(SOLISTENING(sol), \
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("%s: %p not listening", __func__, (sol))); \
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mtx_unlock(&(sol)->so_lock); \
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} while (0)
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#define SOLISTEN_LOCK_ASSERT(sol) do { \
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mtx_assert(&(sol)->so_lock, MA_OWNED); \
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KASSERT(SOLISTENING(sol), \
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("%s: %p not listening", __func__, (sol))); \
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} while (0)
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#define SOLISTEN_UNLOCK_ASSERT(sol) do { \
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mtx_assert(&(sol)->so_lock, MA_NOTOWNED); \
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KASSERT(SOLISTENING(sol), \
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("%s: %p not listening", __func__, (sol))); \
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} while (0)
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/*
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* Socket buffer locks. These are strongly preferred over SOCKBUF_LOCK(sb)
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* macros, as we are moving towards protocol specific socket buffers.
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*/
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#define SOCK_RECVBUF_MTX(so) \
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(&(so)->so_rcv_mtx)
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#define SOCK_RECVBUF_LOCK(so) \
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mtx_lock(SOCK_RECVBUF_MTX(so))
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#define SOCK_RECVBUF_UNLOCK(so) \
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mtx_unlock(SOCK_RECVBUF_MTX(so))
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#define SOCK_RECVBUF_LOCK_ASSERT(so) \
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mtx_assert(SOCK_RECVBUF_MTX(so), MA_OWNED)
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#define SOCK_RECVBUF_UNLOCK_ASSERT(so) \
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mtx_assert(SOCK_RECVBUF_MTX(so), MA_NOTOWNED)
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#define SOCK_SENDBUF_MTX(so) \
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(&(so)->so_snd_mtx)
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#define SOCK_SENDBUF_LOCK(so) \
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mtx_lock(SOCK_SENDBUF_MTX(so))
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#define SOCK_SENDBUF_UNLOCK(so) \
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mtx_unlock(SOCK_SENDBUF_MTX(so))
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#define SOCK_SENDBUF_LOCK_ASSERT(so) \
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mtx_assert(SOCK_SENDBUF_MTX(so), MA_OWNED)
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#define SOCK_SENDBUF_UNLOCK_ASSERT(so) \
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mtx_assert(SOCK_SENDBUF_MTX(so), MA_NOTOWNED)
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#define SOCK_BUF_LOCK(so, which) \
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mtx_lock(soeventmtx(so, which))
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#define SOCK_BUF_UNLOCK(so, which) \
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mtx_unlock(soeventmtx(so, which))
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#define SOCK_BUF_LOCK_ASSERT(so, which) \
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mtx_assert(soeventmtx(so, which), MA_OWNED)
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#define SOCK_BUF_UNLOCK_ASSERT(so, which) \
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mtx_assert(soeventmtx(so, which), MA_NOTOWNED)
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static inline struct sockbuf *
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sobuf(struct socket *so, const sb_which which)
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{
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return (which == SO_RCV ? &so->so_rcv : &so->so_snd);
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}
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static inline struct mtx *
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soeventmtx(struct socket *so, const sb_which which)
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{
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return (which == SO_RCV ? SOCK_RECVBUF_MTX(so) : SOCK_SENDBUF_MTX(so));
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}
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/*
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* Macros for sockets and socket buffering.
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*/
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/*
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* Flags to soiolock().
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*/
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#define SBL_WAIT 0x00000001 /* Wait if not immediately available. */
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#define SBL_NOINTR 0x00000002 /* Force non-interruptible sleep. */
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#define SBL_VALID (SBL_WAIT | SBL_NOINTR)
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#define SBLOCKWAIT(f) (((f) & MSG_DONTWAIT) ? 0 : SBL_WAIT)
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#define SOCK_IO_SEND_LOCK(so, flags) \
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soiolock((so), &(so)->so_snd_sx, (flags))
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#define SOCK_IO_SEND_UNLOCK(so) \
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soiounlock(&(so)->so_snd_sx)
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#define SOCK_IO_SEND_OWNED(so) sx_xlocked(&(so)->so_snd_sx)
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#define SOCK_IO_RECV_LOCK(so, flags) \
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soiolock((so), &(so)->so_rcv_sx, (flags))
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#define SOCK_IO_RECV_UNLOCK(so) \
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soiounlock(&(so)->so_rcv_sx)
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#define SOCK_IO_RECV_OWNED(so) sx_xlocked(&(so)->so_rcv_sx)
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/* do we have to send all at once on a socket? */
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#define sosendallatonce(so) \
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((so)->so_proto->pr_flags & PR_ATOMIC)
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/* can we read something from so? */
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#define soreadabledata(so) \
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(sbavail(&(so)->so_rcv) >= (so)->so_rcv.sb_lowat || \
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(so)->so_error || (so)->so_rerror)
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#define soreadable(so) \
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(soreadabledata(so) || ((so)->so_rcv.sb_state & SBS_CANTRCVMORE))
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/* can we write something to so? */
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#define sowriteable(so) \
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((sbspace(&(so)->so_snd) >= (so)->so_snd.sb_lowat && \
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(((so)->so_state&SS_ISCONNECTED) || \
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((so)->so_proto->pr_flags&PR_CONNREQUIRED)==0)) || \
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((so)->so_snd.sb_state & SBS_CANTSENDMORE) || \
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(so)->so_error)
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/*
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* soref()/sorele() ref-count the socket structure.
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* soref() may be called without owning socket lock, but in that case a
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* caller must own something that holds socket, and so_count must be not 0.
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* Note that you must still explicitly close the socket, but the last ref
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* count will free the structure.
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*/
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#define soref(so) refcount_acquire(&(so)->so_count)
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#define sorele(so) do { \
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SOCK_UNLOCK_ASSERT(so); \
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if (!refcount_release_if_not_last(&(so)->so_count)) { \
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SOCK_LOCK(so); \
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sorele_locked(so); \
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} \
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} while (0)
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/*
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* In sorwakeup() and sowwakeup(), acquire the socket buffer lock to
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* avoid a non-atomic test-and-wakeup. However, sowakeup is
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* responsible for releasing the lock if it is called. We unlock only
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* if we don't call into sowakeup. If any code is introduced that
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* directly invokes the underlying sowakeup() primitives, it must
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* maintain the same semantics.
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*/
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#define sorwakeup(so) do { \
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SOCK_RECVBUF_LOCK(so); \
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sorwakeup_locked(so); \
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} while (0)
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#define sowwakeup(so) do { \
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SOCK_SENDBUF_LOCK(so); \
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sowwakeup_locked(so); \
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} while (0)
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struct accept_filter {
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char accf_name[16];
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int (*accf_callback)
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(struct socket *so, void *arg, int waitflag);
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void * (*accf_create)
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(struct socket *so, char *arg);
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void (*accf_destroy)
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(struct socket *so);
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SLIST_ENTRY(accept_filter) accf_next;
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};
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#define ACCEPT_FILTER_DEFINE(modname, filtname, cb, create, destroy, ver) \
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static struct accept_filter modname##_filter = { \
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.accf_name = filtname, \
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.accf_callback = cb, \
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.accf_create = create, \
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.accf_destroy = destroy, \
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}; \
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static moduledata_t modname##_mod = { \
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.name = __XSTRING(modname), \
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.evhand = accept_filt_generic_mod_event, \
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.priv = &modname##_filter, \
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}; \
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DECLARE_MODULE(modname, modname##_mod, SI_SUB_DRIVERS, \
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SI_ORDER_MIDDLE); \
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MODULE_VERSION(modname, ver)
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#ifdef MALLOC_DECLARE
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MALLOC_DECLARE(M_ACCF);
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MALLOC_DECLARE(M_PCB);
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MALLOC_DECLARE(M_SONAME);
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#endif
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/*
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* Socket specific helper hook point identifiers
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* Do not leave holes in the sequence, hook registration is a loop.
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*/
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#define HHOOK_SOCKET_OPT 0
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#define HHOOK_SOCKET_CREATE 1
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#define HHOOK_SOCKET_RCV 2
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#define HHOOK_SOCKET_SND 3
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#define HHOOK_FILT_SOREAD 4
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#define HHOOK_FILT_SOWRITE 5
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#define HHOOK_SOCKET_CLOSE 6
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#define HHOOK_SOCKET_LAST HHOOK_SOCKET_CLOSE
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struct socket_hhook_data {
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struct socket *so;
|
|
struct mbuf *m;
|
|
void *hctx; /* hook point specific data*/
|
|
int status;
|
|
};
|
|
|
|
extern int maxsockets;
|
|
extern u_long sb_max;
|
|
extern so_gen_t so_gencnt;
|
|
|
|
struct file;
|
|
struct filecaps;
|
|
struct filedesc;
|
|
struct mbuf;
|
|
struct sockaddr;
|
|
struct ucred;
|
|
struct uio;
|
|
|
|
/* Return values for socket upcalls. */
|
|
#define SU_OK 0
|
|
#define SU_ISCONNECTED 1
|
|
|
|
/*
|
|
* From uipc_socket and friends
|
|
*/
|
|
int getsockaddr(struct sockaddr **namp, const struct sockaddr *uaddr,
|
|
size_t len);
|
|
int getsock_cap(struct thread *td, int fd, cap_rights_t *rightsp,
|
|
struct file **fpp, struct filecaps *havecaps);
|
|
int getsock(struct thread *td, int fd, cap_rights_t *rightsp,
|
|
struct file **fpp);
|
|
void soabort(struct socket *so);
|
|
int soaccept(struct socket *so, struct sockaddr **nam);
|
|
void soaio_enqueue(struct task *task);
|
|
void soaio_rcv(void *context, int pending);
|
|
void soaio_snd(void *context, int pending);
|
|
int socheckuid(struct socket *so, uid_t uid);
|
|
int sobind(struct socket *so, struct sockaddr *nam, struct thread *td);
|
|
int sobindat(int fd, struct socket *so, struct sockaddr *nam,
|
|
struct thread *td);
|
|
int soclose(struct socket *so);
|
|
int soconnect(struct socket *so, struct sockaddr *nam, struct thread *td);
|
|
int soconnectat(int fd, struct socket *so, struct sockaddr *nam,
|
|
struct thread *td);
|
|
int soconnect2(struct socket *so1, struct socket *so2);
|
|
int socreate(int dom, struct socket **aso, int type, int proto,
|
|
struct ucred *cred, struct thread *td);
|
|
int sodisconnect(struct socket *so);
|
|
void sodtor_set(struct socket *, so_dtor_t *);
|
|
struct sockaddr *sodupsockaddr(const struct sockaddr *sa, int mflags);
|
|
void sohasoutofband(struct socket *so);
|
|
int solisten(struct socket *so, int backlog, struct thread *td);
|
|
void solisten_proto(struct socket *so, int backlog);
|
|
void solisten_proto_abort(struct socket *so);
|
|
int solisten_proto_check(struct socket *so);
|
|
bool solisten_enqueue(struct socket *, int);
|
|
int solisten_dequeue(struct socket *, struct socket **, int);
|
|
struct socket *
|
|
solisten_clone(struct socket *);
|
|
struct socket *
|
|
sonewconn(struct socket *head, int connstatus);
|
|
struct socket *
|
|
sopeeloff(struct socket *);
|
|
int sopoll(struct socket *so, int events, struct ucred *active_cred,
|
|
struct thread *td);
|
|
int sopoll_generic(struct socket *so, int events,
|
|
struct ucred *active_cred, struct thread *td);
|
|
int soreceive(struct socket *so, struct sockaddr **paddr, struct uio *uio,
|
|
struct mbuf **mp0, struct mbuf **controlp, int *flagsp);
|
|
int soreceive_stream(struct socket *so, struct sockaddr **paddr,
|
|
struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
|
|
int *flagsp);
|
|
int soreceive_dgram(struct socket *so, struct sockaddr **paddr,
|
|
struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
|
|
int *flagsp);
|
|
int soreceive_generic(struct socket *so, struct sockaddr **paddr,
|
|
struct uio *uio, struct mbuf **mp0, struct mbuf **controlp,
|
|
int *flagsp);
|
|
void sorele_locked(struct socket *so);
|
|
void sodealloc(struct socket *);
|
|
int soreserve(struct socket *so, u_long sndcc, u_long rcvcc);
|
|
void sorflush(struct socket *so);
|
|
int sosend(struct socket *so, struct sockaddr *addr, struct uio *uio,
|
|
struct mbuf *top, struct mbuf *control, int flags,
|
|
struct thread *td);
|
|
int sousrsend(struct socket *so, struct sockaddr *addr, struct uio *uio,
|
|
struct mbuf *control, int flags, struct proc *);
|
|
int sosend_dgram(struct socket *so, struct sockaddr *addr,
|
|
struct uio *uio, struct mbuf *top, struct mbuf *control,
|
|
int flags, struct thread *td);
|
|
int sosend_generic(struct socket *so, struct sockaddr *addr,
|
|
struct uio *uio, struct mbuf *top, struct mbuf *control,
|
|
int flags, struct thread *td);
|
|
int soshutdown(struct socket *so, int how);
|
|
void soupcall_clear(struct socket *, sb_which);
|
|
void soupcall_set(struct socket *, sb_which, so_upcall_t, void *);
|
|
void solisten_upcall_set(struct socket *, so_upcall_t, void *);
|
|
void sorwakeup_locked(struct socket *);
|
|
void sowwakeup_locked(struct socket *);
|
|
void sowakeup_aio(struct socket *, sb_which);
|
|
void solisten_wakeup(struct socket *);
|
|
int selsocket(struct socket *so, int events, struct timeval *tv,
|
|
struct thread *td);
|
|
void soisconnected(struct socket *so);
|
|
void soisconnecting(struct socket *so);
|
|
void soisdisconnected(struct socket *so);
|
|
void soisdisconnecting(struct socket *so);
|
|
void socantrcvmore(struct socket *so);
|
|
void socantrcvmore_locked(struct socket *so);
|
|
void socantsendmore(struct socket *so);
|
|
void socantsendmore_locked(struct socket *so);
|
|
void soroverflow(struct socket *so);
|
|
void soroverflow_locked(struct socket *so);
|
|
int soiolock(struct socket *so, struct sx *sx, int flags);
|
|
void soiounlock(struct sx *sx);
|
|
|
|
/*
|
|
* Accept filter functions (duh).
|
|
*/
|
|
int accept_filt_add(struct accept_filter *filt);
|
|
int accept_filt_del(char *name);
|
|
struct accept_filter *accept_filt_get(char *name);
|
|
#ifdef ACCEPT_FILTER_MOD
|
|
#ifdef SYSCTL_DECL
|
|
SYSCTL_DECL(_net_inet_accf);
|
|
#endif
|
|
int accept_filt_generic_mod_event(module_t mod, int event, void *data);
|
|
#endif
|
|
|
|
#endif /* _KERNEL */
|
|
|
|
/*
|
|
* Structure to export socket from kernel to utilities, via sysctl(3).
|
|
*/
|
|
struct xsocket {
|
|
ksize_t xso_len; /* length of this structure */
|
|
kvaddr_t xso_so; /* kernel address of struct socket */
|
|
kvaddr_t so_pcb; /* kernel address of struct inpcb */
|
|
uint64_t so_oobmark;
|
|
int64_t so_spare64[8];
|
|
int32_t xso_protocol;
|
|
int32_t xso_family;
|
|
uint32_t so_qlen;
|
|
uint32_t so_incqlen;
|
|
uint32_t so_qlimit;
|
|
pid_t so_pgid;
|
|
uid_t so_uid;
|
|
int32_t so_spare32[8];
|
|
int16_t so_type;
|
|
int16_t so_options;
|
|
int16_t so_linger;
|
|
int16_t so_state;
|
|
int16_t so_timeo;
|
|
uint16_t so_error;
|
|
struct xsockbuf {
|
|
uint32_t sb_cc;
|
|
uint32_t sb_hiwat;
|
|
uint32_t sb_mbcnt;
|
|
uint32_t sb_spare0; /* was sb_mcnt */
|
|
uint32_t sb_spare1; /* was sb_ccnt */
|
|
uint32_t sb_mbmax;
|
|
int32_t sb_lowat;
|
|
int32_t sb_timeo;
|
|
int16_t sb_flags;
|
|
} so_rcv, so_snd;
|
|
};
|
|
|
|
#ifdef _KERNEL
|
|
void sotoxsocket(struct socket *so, struct xsocket *xso);
|
|
void sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb);
|
|
#endif
|
|
|
|
/*
|
|
* Socket buffer state bits. Exported via libprocstat(3).
|
|
*/
|
|
#define SBS_CANTSENDMORE 0x0010 /* can't send more data to peer */
|
|
#define SBS_CANTRCVMORE 0x0020 /* can't receive more data from peer */
|
|
#define SBS_RCVATMARK 0x0040 /* at mark on input */
|
|
|
|
#endif /* !_SYS_SOCKETVAR_H_ */
|