cregit-Linux how code gets into the kernel

Release 4.7 net/bluetooth/l2cap_sock.c

Directory: net/bluetooth
/*
   BlueZ - Bluetooth protocol stack for Linux
   Copyright (C) 2000-2001 Qualcomm Incorporated
   Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
   Copyright (C) 2010 Google Inc.
   Copyright (C) 2011 ProFUSION Embedded Systems

   Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License version 2 as
   published by the Free Software Foundation;

   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
   IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
   CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
   WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

   ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
   COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
   SOFTWARE IS DISCLAIMED.
*/

/* Bluetooth L2CAP sockets. */

#include <linux/module.h>
#include <linux/export.h>

#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include <net/bluetooth/l2cap.h>

#include "smp.h"


static struct bt_sock_list l2cap_sk_list = {
	.lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock)
};


static const struct proto_ops l2cap_sock_ops;
static void l2cap_sock_init(struct sock *sk, struct sock *parent);
static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
				     int proto, gfp_t prio, int kern);


bool l2cap_is_socket(struct socket *sock) { return sock && sock->ops == &l2cap_sock_ops; }

Contributors

PersonTokensPropCommitsCommitProp
david herrmanndavid herrmann20100.00%1100.00%
Total20100.00%1100.00%

EXPORT_SYMBOL(l2cap_is_socket);
static int l2cap_validate_bredr_psm(u16 psm) { /* PSM must be odd and lsb of upper byte must be 0 */ if ((psm & 0x0101) != 0x0001) return -EINVAL; /* Restrict usage of well-known PSMs */ if (psm < L2CAP_PSM_DYN_START && !capable(CAP_NET_BIND_SERVICE)) return -EACCES; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
johan hedbergjohan hedberg44100.00%2100.00%
Total44100.00%2100.00%


static int l2cap_validate_le_psm(u16 psm) { /* Valid LE_PSM ranges are defined only until 0x00ff */ if (psm > L2CAP_PSM_LE_DYN_END) return -EINVAL; /* Restrict fixed, SIG assigned PSM values to CAP_NET_BIND_SERVICE */ if (psm < L2CAP_PSM_LE_DYN_START && !capable(CAP_NET_BIND_SERVICE)) return -EACCES; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
johan hedbergjohan hedberg40100.00%2100.00%
Total40100.00%2100.00%


static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct sockaddr_l2 la; int len, err = 0; BT_DBG("sk %p", sk); if (!addr || addr->sa_family != AF_BLUETOOTH) return -EINVAL; memset(&la, 0, sizeof(la)); len = min_t(unsigned int, sizeof(la), alen); memcpy(&la, addr, len); if (la.l2_cid && la.l2_psm) return -EINVAL; if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) return -EINVAL; if (bdaddr_type_is_le(la.l2_bdaddr_type)) { /* We only allow ATT user space socket */ if (la.l2_cid && la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) return -EINVAL; } lock_sock(sk); if (sk->sk_state != BT_OPEN) { err = -EBADFD; goto done; } if (la.l2_psm) { __u16 psm = __le16_to_cpu(la.l2_psm); if (la.l2_bdaddr_type == BDADDR_BREDR) err = l2cap_validate_bredr_psm(psm); else err = l2cap_validate_le_psm(psm); if (err) goto done; } bacpy(&chan->src, &la.l2_bdaddr); chan->src_type = la.l2_bdaddr_type; if (la.l2_cid) err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); else err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); if (err < 0) goto done; switch (chan->chan_type) { case L2CAP_CHAN_CONN_LESS: if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_3DSP) chan->sec_level = BT_SECURITY_SDP; break; case L2CAP_CHAN_CONN_ORIENTED: if (__le16_to_cpu(la.l2_psm) == L2CAP_PSM_SDP || __le16_to_cpu(la.l2_psm) == L2CAP_PSM_RFCOMM) chan->sec_level = BT_SECURITY_SDP; break; case L2CAP_CHAN_RAW: chan->sec_level = BT_SECURITY_SDP; break; case L2CAP_CHAN_FIXED: /* Fixed channels default to the L2CAP core not holding a * hci_conn reference for them. For fixed channels mapping to * L2CAP sockets we do want to hold a reference so set the * appropriate flag to request it. */ set_bit(FLAG_HOLD_HCI_CONN, &chan->flags); break; } if (chan->psm && bdaddr_type_is_le(chan->src_type)) chan->mode = L2CAP_MODE_LE_FLOWCTL; chan->state = BT_BOUND; sk->sk_state = BT_BOUND; done: release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan25860.14%419.05%
johan hedbergjohan hedberg12428.90%942.86%
marcel holtmannmarcel holtmann378.62%419.05%
ville tervoville tervo40.93%14.76%
santosh nayaksantosh nayak30.70%14.76%
andrei emeltchenkoandrei emeltchenko20.47%14.76%
joe perchesjoe perches10.23%14.76%
Total429100.00%21100.00%


static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct sockaddr_l2 la; int len, err = 0; BT_DBG("sk %p", sk); if (!addr || alen < sizeof(addr->sa_family) || addr->sa_family != AF_BLUETOOTH) return -EINVAL; memset(&la, 0, sizeof(la)); len = min_t(unsigned int, sizeof(la), alen); memcpy(&la, addr, len); if (la.l2_cid && la.l2_psm) return -EINVAL; if (!bdaddr_type_is_valid(la.l2_bdaddr_type)) return -EINVAL; /* Check that the socket wasn't bound to something that * conflicts with the address given to connect(). If chan->src * is BDADDR_ANY it means bind() was never used, in which case * chan->src_type and la.l2_bdaddr_type do not need to match. */ if (chan->src_type == BDADDR_BREDR && bacmp(&chan->src, BDADDR_ANY) && bdaddr_type_is_le(la.l2_bdaddr_type)) { /* Old user space versions will try to incorrectly bind * the ATT socket using BDADDR_BREDR. We need to accept * this and fix up the source address type only when * both the source CID and destination CID indicate * ATT. Anything else is an invalid combination. */ if (chan->scid != L2CAP_CID_ATT || la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) return -EINVAL; /* We don't have the hdev available here to make a * better decision on random vs public, but since all * user space versions that exhibit this issue anyway do * not support random local addresses assuming public * here is good enough. */ chan->src_type = BDADDR_LE_PUBLIC; } if (chan->src_type != BDADDR_BREDR && la.l2_bdaddr_type == BDADDR_BREDR) return -EINVAL; if (bdaddr_type_is_le(la.l2_bdaddr_type)) { /* We only allow ATT user space socket */ if (la.l2_cid && la.l2_cid != cpu_to_le16(L2CAP_CID_ATT)) return -EINVAL; } if (chan->psm && bdaddr_type_is_le(chan->src_type)) chan->mode = L2CAP_MODE_LE_FLOWCTL; err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), &la.l2_bdaddr, la.l2_bdaddr_type); if (err) return err; lock_sock(sk); err = bt_sock_wait_state(sk, BT_CONNECTED, sock_sndtimeo(sk, flags & O_NONBLOCK)); release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan17652.23%317.65%
johan hedbergjohan hedberg13540.06%741.18%
andrei emeltchenkoandrei emeltchenko82.37%211.76%
ville tervoville tervo72.08%15.88%
andre guedesandre guedes41.19%15.88%
santosh nayaksantosh nayak30.89%15.88%
marcel holtmannmarcel holtmann20.59%15.88%
joe perchesjoe perches20.59%15.88%
Total337100.00%17100.00%


static int l2cap_sock_listen(struct socket *sock, int backlog) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; int err = 0; BT_DBG("sk %p backlog %d", sk, backlog); lock_sock(sk); if (sk->sk_state != BT_BOUND) { err = -EBADFD; goto done; } if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { err = -EINVAL; goto done; } switch (chan->mode) { case L2CAP_MODE_BASIC: case L2CAP_MODE_LE_FLOWCTL: break; case L2CAP_MODE_ERTM: case L2CAP_MODE_STREAMING: if (!disable_ertm) break; /* fall through */ default: err = -EOPNOTSUPP; goto done; } sk->sk_max_ack_backlog = backlog; sk->sk_ack_backlog = 0; /* Listening channels need to use nested locking in order not to * cause lockdep warnings when the created child channels end up * being locked in the same thread as the parent channel. */ atomic_set(&chan->nesting, L2CAP_NESTING_PARENT); chan->state = BT_LISTEN; sk->sk_state = BT_LISTEN; done: release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan14078.65%342.86%
marcel holtmannmarcel holtmann2312.92%114.29%
johan hedbergjohan hedberg158.43%342.86%
Total178100.00%7100.00%


static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) { DEFINE_WAIT_FUNC(wait, woken_wake_function); struct sock *sk = sock->sk, *nsk; long timeo; int err = 0; lock_sock_nested(sk, L2CAP_NESTING_PARENT); timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); BT_DBG("sk %p timeo %ld", sk, timeo); /* Wait for an incoming connection. (wake-one). */ add_wait_queue_exclusive(sk_sleep(sk), &wait); while (1) { if (sk->sk_state != BT_LISTEN) { err = -EBADFD; break; } nsk = bt_accept_dequeue(sk, newsock); if (nsk) break; if (!timeo) { err = -EAGAIN; break; } if (signal_pending(current)) { err = sock_intr_errno(timeo); break; } release_sock(sk); timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); lock_sock_nested(sk, L2CAP_NESTING_PARENT); } remove_wait_queue(sk_sleep(sk), &wait); if (err) goto done; newsock->state = SS_CONNECTED; BT_DBG("new socket %p", nsk); done: release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan17179.17%125.00%
peter hurleypeter hurley4319.91%250.00%
johan hedbergjohan hedberg20.93%125.00%
Total216100.00%4100.00%


static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) { struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; BT_DBG("sock %p, sk %p", sock, sk); if (peer && sk->sk_state != BT_CONNECTED && sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2 && sk->sk_state != BT_CONFIG) return -ENOTCONN; memset(la, 0, sizeof(struct sockaddr_l2)); addr->sa_family = AF_BLUETOOTH; *len = sizeof(struct sockaddr_l2); la->l2_psm = chan->psm; if (peer) { bacpy(&la->l2_bdaddr, &chan->dst); la->l2_cid = cpu_to_le16(chan->dcid); la->l2_bdaddr_type = chan->dst_type; } else { bacpy(&la->l2_bdaddr, &chan->src); la->l2_cid = cpu_to_le16(chan->scid); la->l2_bdaddr_type = chan->src_type; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan14167.46%330.00%
johan hedbergjohan hedberg3717.70%440.00%
marcel holtmannmarcel holtmann188.61%220.00%
mathias krausemathias krause136.22%110.00%
Total209100.00%10100.00%


static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct l2cap_options opts; struct l2cap_conninfo cinfo; int len, err = 0; u32 opt; BT_DBG("sk %p", sk); if (get_user(len, optlen)) return -EFAULT; lock_sock(sk); switch (optname) { case L2CAP_OPTIONS: /* LE sockets should use BT_SNDMTU/BT_RCVMTU, but since * legacy ATT code depends on getsockopt for * L2CAP_OPTIONS we need to let this pass. */ if (bdaddr_type_is_le(chan->src_type) && chan->scid != L2CAP_CID_ATT) { err = -EINVAL; break; } memset(&opts, 0, sizeof(opts)); opts.imtu = chan->imtu; opts.omtu = chan->omtu; opts.flush_to = chan->flush_to; opts.mode = chan->mode; opts.fcs = chan->fcs; opts.max_tx = chan->max_tx; opts.txwin_size = chan->tx_win; len = min_t(unsigned int, len, sizeof(opts)); if (copy_to_user(optval, (char *) &opts, len)) err = -EFAULT; break; case L2CAP_LM: switch (chan->sec_level) { case BT_SECURITY_LOW: opt = L2CAP_LM_AUTH; break; case BT_SECURITY_MEDIUM: opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; break; case BT_SECURITY_HIGH: opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | L2CAP_LM_SECURE; break; case BT_SECURITY_FIPS: opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | L2CAP_LM_SECURE | L2CAP_LM_FIPS; break; default: opt = 0; break; } if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) opt |= L2CAP_LM_MASTER; if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) opt |= L2CAP_LM_RELIABLE; if (put_user(opt, (u32 __user *) optval)) err = -EFAULT; break; case L2CAP_CONNINFO: if (sk->sk_state != BT_CONNECTED && !(sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags))) { err = -ENOTCONN; break; } memset(&cinfo, 0, sizeof(cinfo)); cinfo.hci_handle = chan->conn->hcon->handle; memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); len = min_t(unsigned int, len, sizeof(cinfo)); if (copy_to_user(optval, (char *) &cinfo, len)) err = -EFAULT; break; default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan38281.80%541.67%
johan hedbergjohan hedberg245.14%18.33%
marcel holtmannmarcel holtmann143.00%18.33%
andrei emeltchenkoandrei emeltchenko143.00%216.67%
vasiliy kulikovvasiliy kulikov132.78%18.33%
filip palianfilip palian132.78%18.33%
gustavo padovangustavo padovan71.50%18.33%
Total467100.00%12100.00%


static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct bt_security sec; struct bt_power pwr; int len, err = 0; BT_DBG("sk %p", sk); if (level == SOL_L2CAP) return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); if (level != SOL_BLUETOOTH) return -ENOPROTOOPT; if (get_user(len, optlen)) return -EFAULT; lock_sock(sk); switch (optname) { case BT_SECURITY: if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && chan->chan_type != L2CAP_CHAN_FIXED && chan->chan_type != L2CAP_CHAN_RAW) { err = -EINVAL; break; } memset(&sec, 0, sizeof(sec)); if (chan->conn) { sec.level = chan->conn->hcon->sec_level; if (sk->sk_state == BT_CONNECTED) sec.key_size = chan->conn->hcon->enc_key_size; } else { sec.level = chan->sec_level; } len = min_t(unsigned int, len, sizeof(sec)); if (copy_to_user(optval, (char *) &sec, len)) err = -EFAULT; break; case BT_DEFER_SETUP: if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { err = -EINVAL; break; } if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), (u32 __user *) optval)) err = -EFAULT; break; case BT_FLUSHABLE: if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), (u32 __user *) optval)) err = -EFAULT; break; case BT_POWER: if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM && sk->sk_type != SOCK_RAW) { err = -EINVAL; break; } pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); len = min_t(unsigned int, len, sizeof(pwr)); if (copy_to_user(optval, (char *) &pwr, len)) err = -EFAULT; break; case BT_CHANNEL_POLICY: if (put_user(chan->chan_policy, (u32 __user *) optval)) err = -EFAULT; break; case BT_SNDMTU: if (!bdaddr_type_is_le(chan->src_type)) { err = -EINVAL; break; } if (sk->sk_state != BT_CONNECTED) { err = -ENOTCONN; break; } if (put_user(chan->omtu, (u16 __user *) optval)) err = -EFAULT; break; case BT_RCVMTU: if (!bdaddr_type_is_le(chan->src_type)) { err = -EINVAL; break; } if (put_user(chan->imtu, (u16 __user *) optval)) err = -EFAULT; break; default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan26447.40%323.08%
johan hedbergjohan hedberg10819.39%215.38%
jaikumar ganeshjaikumar ganesh7513.46%17.69%
vinicius costa gomesvinicius costa gomes335.92%17.69%
andrei emeltchenkoandrei emeltchenko274.85%323.08%
mat martineaumat martineau254.49%17.69%
gustavo padovangustavo padovan254.49%215.38%
Total557100.00%13100.00%


static bool l2cap_valid_mtu(struct l2cap_chan *chan, u16 mtu) { switch (chan->scid) { case L2CAP_CID_ATT: if (mtu < L2CAP_LE_MIN_MTU) return false; break; default: if (mtu < L2CAP_DEFAULT_MIN_MTU) return false; } return true; }

Contributors

PersonTokensPropCommitsCommitProp
andre guedesandre guedes4797.92%266.67%
johan hedbergjohan hedberg12.08%133.33%
Total48100.00%3100.00%


static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct l2cap_options opts; int len, err = 0; u32 opt; BT_DBG("sk %p", sk); lock_sock(sk); switch (optname) { case L2CAP_OPTIONS: if (bdaddr_type_is_le(chan->src_type)) { err = -EINVAL; break; } if (sk->sk_state == BT_CONNECTED) { err = -EINVAL; break; } opts.imtu = chan->imtu; opts.omtu = chan->omtu; opts.flush_to = chan->flush_to; opts.mode = chan->mode; opts.fcs = chan->fcs; opts.max_tx = chan->max_tx; opts.txwin_size = chan->tx_win; len = min_t(unsigned int, sizeof(opts), optlen); if (copy_from_user((char *) &opts, optval, len)) { err = -EFAULT; break; } if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { err = -EINVAL; break; } if (!l2cap_valid_mtu(chan, opts.imtu)) { err = -EINVAL; break; } chan->mode = opts.mode; switch (chan->mode) { case L2CAP_MODE_LE_FLOWCTL: break; case L2CAP_MODE_BASIC: clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); break; case L2CAP_MODE_ERTM: case L2CAP_MODE_STREAMING: if (!disable_ertm) break; /* fall through */ default: err = -EINVAL; break; } chan->imtu = opts.imtu; chan->omtu = opts.omtu; chan->fcs = opts.fcs; chan->max_tx = opts.max_tx; chan->tx_win = opts.txwin_size; chan->flush_to = opts.flush_to; break; case L2CAP_LM: if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } if (opt & L2CAP_LM_FIPS) { err = -EINVAL; break; } if (opt & L2CAP_LM_AUTH) chan->sec_level = BT_SECURITY_LOW; if (opt & L2CAP_LM_ENCRYPT) chan->sec_level = BT_SECURITY_MEDIUM; if (opt & L2CAP_LM_SECURE) chan->sec_level = BT_SECURITY_HIGH; if (opt & L2CAP_LM_MASTER) set_bit(FLAG_ROLE_SWITCH, &chan->flags); else clear_bit(FLAG_ROLE_SWITCH, &chan->flags); if (opt & L2CAP_LM_RELIABLE) set_bit(FLAG_FORCE_RELIABLE, &chan->flags); else clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); break; default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan38078.03%642.86%
andrei emeltchenkoandrei emeltchenko5210.68%428.57%
johan hedbergjohan hedberg214.31%214.29%
andre guedesandre guedes204.11%17.14%
marcel holtmannmarcel holtmann142.87%17.14%
Total487100.00%14100.00%


static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; struct bt_security sec; struct bt_power pwr; struct l2cap_conn *conn; int len, err = 0; u32 opt; BT_DBG("sk %p", sk); if (level == SOL_L2CAP) return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); if (level != SOL_BLUETOOTH) return -ENOPROTOOPT; lock_sock(sk); switch (optname) { case BT_SECURITY: if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && chan->chan_type != L2CAP_CHAN_FIXED && chan->chan_type != L2CAP_CHAN_RAW) { err = -EINVAL; break; } sec.level = BT_SECURITY_LOW; len = min_t(unsigned int, sizeof(sec), optlen); if (copy_from_user((char *) &sec, optval, len)) { err = -EFAULT; break; } if (sec.level < BT_SECURITY_LOW || sec.level > BT_SECURITY_FIPS) { err = -EINVAL; break; } chan->sec_level = sec.level; if (!chan->conn) break; conn = chan->conn; /*change security for LE channels */ if (chan->scid == L2CAP_CID_ATT) { if (smp_conn_security(conn->hcon, sec.level)) break; set_bit(FLAG_PENDING_SECURITY, &chan->flags); sk->sk_state = BT_CONFIG; chan->state = BT_CONFIG; /* or for ACL link */ } else if ((sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) || sk->sk_state == BT_CONNECTED) { if (!l2cap_chan_check_security(chan, true)) set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); else sk->sk_state_change(sk); } else { err = -EINVAL; } break; case BT_DEFER_SETUP: if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { err = -EINVAL; break; } if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } if (opt) { set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); set_bit(FLAG_DEFER_SETUP, &chan->flags); } else { clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); clear_bit(FLAG_DEFER_SETUP, &chan->flags); } break; case BT_FLUSHABLE: if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } if (opt > BT_FLUSHABLE_ON) { err = -EINVAL; break; } if (opt == BT_FLUSHABLE_OFF) { conn = chan->conn; /* proceed further only when we have l2cap_conn and No Flush support in the LM */ if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { err = -EINVAL; break; } } if (opt) set_bit(FLAG_FLUSHABLE, &chan->flags); else clear_bit(FLAG_FLUSHABLE, &chan->flags); break; case BT_POWER: if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && chan->chan_type != L2CAP_CHAN_RAW) { err = -EINVAL; break; } pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; len = min_t(unsigned int, sizeof(pwr), optlen); if (copy_from_user((char *) &pwr, optval, len)) { err = -EFAULT; break; } if (pwr.force_active) set_bit(FLAG_FORCE_ACTIVE, &chan->flags); else clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); break; case BT_CHANNEL_POLICY: if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { err = -EINVAL; break; } if (chan->mode != L2CAP_MODE_ERTM && chan->mode != L2CAP_MODE_STREAMING) { err = -EOPNOTSUPP; break; } chan->chan_policy = (u8) opt; if (sk->sk_state == BT_CONNECTED && chan->move_role == L2CAP_MOVE_ROLE_NONE) l2cap_move_start(chan); break; case BT_SNDMTU: if (!bdaddr_type_is_le(chan->src_type)) { err = -EINVAL; break; } /* Setting is not supported as it's the remote side that * decides this. */ err = -EPERM; break; case BT_RCVMTU: if (!bdaddr_type_is_le(chan->src_type)) { err = -EINVAL; break; } if (sk->sk_state == BT_CONNECTED) { err = -EISCONN; break; } if (get_user(opt, (u32 __user *) optval)) { err = -EFAULT; break; } chan->imtu = opt; break; default: err = -ENOPROTOOPT; break; } release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan39546.42%625.00%
johan hedbergjohan hedberg11313.28%520.83%
mat martineaumat martineau8810.34%28.33%
jaikumar ganeshjaikumar ganesh779.05%14.17%
gustavo padovangustavo padovan657.64%28.33%
andrei emeltchenkoandrei emeltchenko455.29%28.33%
vinicius costa gomesvinicius costa gomes404.70%28.33%
marcel holtmannmarcel holtmann242.82%14.17%
johannes bergjohannes berg20.24%14.17%
patrik flyktpatrik flykt10.12%14.17%
lucas de marchilucas de marchi10.12%14.17%
Total851100.00%24100.00%


static int l2cap_sock_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) { struct sock *sk = sock->sk; struct l2cap_chan *chan = l2cap_pi(sk)->chan; int err; BT_DBG("sock %p, sk %p", sock, sk); err = sock_error(sk); if (err) return err; if (msg->msg_flags & MSG_OOB) return -EOPNOTSUPP; if (sk->sk_state != BT_CONNECTED) return -ENOTCONN; lock_sock(sk); err = bt_sock_wait_ready(sk, msg->msg_flags); release_sock(sk); if (err) return err; l2cap_chan_lock(chan); err = l2cap_chan_send(chan, msg, len); l2cap_chan_unlock(chan); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan10775.35%466.67%
johan hedbergjohan hedberg2819.72%116.67%
mat martineaumat martineau74.93%116.67%
Total142100.00%6100.00%


static int l2cap_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, int flags) { struct sock *sk = sock->sk; struct l2cap_pinfo *pi = l2cap_pi(sk); int err; lock_sock(sk); if (sk->sk_state == BT_CONNECT2 && test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) { if (bdaddr_type_is_le(pi->chan->src_type)) { sk->sk_state = BT_CONNECTED; pi->chan->state = BT_CONNECTED; __l2cap_le_connect_rsp_defer(pi->chan); } else { sk->sk_state = BT_CONFIG; pi->chan->state = BT_CONFIG; __l2cap_connect_rsp_defer(pi->chan); } err = 0; goto done; } release_sock(sk); if (sock->type == SOCK_STREAM) err = bt_sock_stream_recvmsg(sock, msg, len, flags); else err = bt_sock_recvmsg(sock, msg, len, flags); if (pi->chan->mode != L2CAP_MODE_ERTM) return err; /* Attempt to put pending rx data in the socket buffer */ lock_sock(sk); if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) goto done; if (pi->rx_busy_skb) { if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) pi->rx_busy_skb = NULL; else goto done; } /* Restore data flow when half of the receive buffer is * available. This avoids resending large numbers of * frames. */ if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) l2cap_chan_busy(pi->chan, 0); done: release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
mat martineaumat martineau12343.93%112.50%
gustavo f. padovangustavo f. padovan10738.21%450.00%
johan hedbergjohan hedberg4315.36%225.00%
gustavo padovangustavo padovan72.50%112.50%
Total280100.00%8100.00%

/* Kill socket (only if zapped and orphan) * Must be called on unlocked socket. */
static void l2cap_sock_kill(struct sock *sk) { if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) return; BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); /* Kill poor orphan */ l2cap_chan_put(l2cap_pi(sk)->chan); sock_set_flag(sk, SOCK_DEAD); sock_put(sk); }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan5892.06%360.00%
andrei emeltchenkoandrei emeltchenko46.35%120.00%
jaganath kanakkasseryjaganath kanakkassery11.59%120.00%
Total63100.00%5100.00%


static int __l2cap_wait_ack(struct sock *sk, struct l2cap_chan *chan) { DECLARE_WAITQUEUE(wait, current); int err = 0; int timeo = L2CAP_WAIT_ACK_POLL_PERIOD; /* Timeout to prevent infinite loop */ unsigned long timeout = jiffies + L2CAP_WAIT_ACK_TIMEOUT; add_wait_queue(sk_sleep(sk), &wait); set_current_state(TASK_INTERRUPTIBLE); do { BT_DBG("Waiting for %d ACKs, timeout %04d ms", chan->unacked_frames, time_after(jiffies, timeout) ? 0 : jiffies_to_msecs(timeout - jiffies)); if (!timeo) timeo = L2CAP_WAIT_ACK_POLL_PERIOD; if (signal_pending(current)) { err = sock_intr_errno(timeo); break; } release_sock(sk); timeo = schedule_timeout(timeo); lock_sock(sk); set_current_state(TASK_INTERRUPTIBLE); err = sock_error(sk); if (err) break; if (time_after(jiffies, timeout)) { err = -ENOLINK; break; } } while (chan->unacked_frames > 0 && chan->state == BT_CONNECTED); set_current_state(TASK_RUNNING); remove_wait_queue(sk_sleep(sk), &wait); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo padovangustavo padovan12563.45%120.00%
dean jenkinsdean jenkins7236.55%480.00%
Total197100.00%5100.00%


static int l2cap_sock_shutdown(struct socket *sock, int how) { struct sock *sk = sock->sk; struct l2cap_chan *chan; struct l2cap_conn *conn; int err = 0; BT_DBG("sock %p, sk %p", sock, sk); if (!sk) return 0; lock_sock(sk); if (sk->sk_shutdown) goto shutdown_already; BT_DBG("Handling sock shutdown"); /* prevent sk structure from being freed whilst unlocked */ sock_hold(sk); chan = l2cap_pi(sk)->chan; /* prevent chan structure from being freed whilst unlocked */ l2cap_chan_hold(chan); BT_DBG("chan %p state %s", chan, state_to_string(chan->state)); if (chan->mode == L2CAP_MODE_ERTM && chan->unacked_frames > 0 && chan->state == BT_CONNECTED) { err = __l2cap_wait_ack(sk, chan); /* After waiting for ACKs, check whether shutdown * has already been actioned to close the L2CAP * link such as by l2cap_disconnection_req(). */ if (sk->sk_shutdown) goto has_shutdown; } sk->sk_shutdown = SHUTDOWN_MASK; release_sock(sk); l2cap_chan_lock(chan); conn = chan->conn; if (conn) /* prevent conn structure from being freed */ l2cap_conn_get(conn); l2cap_chan_unlock(chan); if (conn) /* mutex lock must be taken before l2cap_chan_lock() */ mutex_lock(&conn->chan_lock); l2cap_chan_lock(chan); l2cap_chan_close(chan, 0); l2cap_chan_unlock(chan); if (conn) { mutex_unlock(&conn->chan_lock); l2cap_conn_put(conn); } lock_sock(sk); if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && !(current->flags & PF_EXITING)) err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); has_shutdown: l2cap_chan_put(chan); sock_put(sk); shutdown_already: if (!err && sk->sk_err) err = -sk->sk_err; release_sock(sk); BT_DBG("Sock shutdown complete err: %d", err); return err; }

Contributors

PersonTokensPropCommitsCommitProp
dean jenkinsdean jenkins14645.48%640.00%
gustavo f. padovangustavo f. padovan12639.25%426.67%
andrei emeltchenkoandrei emeltchenko268.10%320.00%
johan hedbergjohan hedberg144.36%16.67%
vladimir davydovvladimir davydov92.80%16.67%
Total321100.00%15100.00%


static int l2cap_sock_release(struct socket *sock) { struct sock *sk = sock->sk; int err; BT_DBG("sock %p, sk %p", sock, sk); if (!sk) return 0; bt_sock_unlink(&l2cap_sk_list, sk); err = l2cap_sock_shutdown(sock, 2); sock_orphan(sk); l2cap_sock_kill(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan6288.57%150.00%
masatake yamatomasatake yamato811.43%150.00%
Total70100.00%2100.00%


static void l2cap_sock_cleanup_listen(struct sock *parent) { struct sock *sk; BT_DBG("parent %p state %s", parent, state_to_string(parent->sk_state)); /* Close not yet accepted channels */ while ((sk = bt_accept_dequeue(parent, NULL))) { struct l2cap_chan *chan = l2cap_pi(sk)->chan; BT_DBG("child chan %p state %s", chan, state_to_string(chan->state)); l2cap_chan_lock(chan); __clear_chan_timer(chan); l2cap_chan_close(chan, ECONNRESET); l2cap_chan_unlock(chan); l2cap_sock_kill(sk); } }

Contributors

PersonTokensPropCommitsCommitProp
andrei emeltchenkoandrei emeltchenko7777.78%150.00%
johan hedbergjohan hedberg2222.22%150.00%
Total99100.00%2100.00%


static struct l2cap_chan *l2cap_sock_new_connection_cb(struct l2cap_chan *chan) { struct sock *sk, *parent = chan->data; lock_sock(parent); /* Check for backlog size */ if (sk_acceptq_is_full(parent)) { BT_DBG("backlog full %d", parent->sk_ack_backlog); release_sock(parent); return NULL; } sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, GFP_ATOMIC, 0); if (!sk) { release_sock(parent); return NULL; } bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); l2cap_sock_init(sk, parent); bt_accept_enqueue(parent, sk); release_sock(parent); return l2cap_pi(sk)->chan; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan5947.58%112.50%
gustavo padovangustavo padovan4435.48%450.00%
jukka taimistojukka taimisto129.68%112.50%
octavian purdilaoctavian purdila75.65%112.50%
eric w. biedermaneric w. biederman21.61%112.50%
Total124100.00%8100.00%


static int l2cap_sock_recv_cb(struct l2cap_chan *chan, struct sk_buff *skb) { struct sock *sk = chan->data; int err; lock_sock(sk); if (l2cap_pi(sk)->rx_busy_skb) { err = -ENOMEM; goto done; } err = sock_queue_rcv_skb(sk, skb); /* For ERTM, handle one skb that doesn't fit into the recv * buffer. This is important to do because the data frames * have already been acked, so the skb cannot be discarded. * * Notify the l2cap core that the buffer is full, so the * LOCAL_BUSY state is entered and no more frames are * acked and reassembled until there is buffer space * available. */ if (err < 0 && chan->mode == L2CAP_MODE_ERTM) { l2cap_pi(sk)->rx_busy_skb = skb; l2cap_chan_busy(chan, 1); err = 0; } done: release_sock(sk); return err; }

Contributors

PersonTokensPropCommitsCommitProp
mat martineaumat martineau4441.51%120.00%
gustavo f. padovangustavo f. padovan2725.47%120.00%
andrei emeltchenkoandrei emeltchenko2018.87%120.00%
marcel holtmannmarcel holtmann109.43%120.00%
gustavo padovangustavo padovan54.72%120.00%
Total106100.00%5100.00%


static void l2cap_sock_close_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; l2cap_sock_kill(sk); }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan2080.00%150.00%
gustavo padovangustavo padovan520.00%150.00%
Total25100.00%2100.00%


static void l2cap_sock_teardown_cb(struct l2cap_chan *chan, int err) { struct sock *sk = chan->data; struct sock *parent; BT_DBG("chan %p state %s", chan, state_to_string(chan->state)); /* This callback can be called both for server (BT_LISTEN) * sockets as well as "normal" ones. To avoid lockdep warnings * with child socket locking (through l2cap_sock_cleanup_listen) * we need separation into separate nesting levels. The simplest * way to accomplish this is to inherit the nesting level used * for the channel. */ lock_sock_nested(sk, atomic_read(&chan->nesting)); parent = bt_sk(sk)->parent; sock_set_flag(sk, SOCK_ZAPPED); switch (chan->state) { case BT_OPEN: case BT_BOUND: case BT_CLOSED: break; case BT_LISTEN: l2cap_sock_cleanup_listen(sk); sk->sk_state = BT_CLOSED; chan->state = BT_CLOSED; break; default: sk->sk_state = BT_CLOSED; chan->state = BT_CLOSED; sk->sk_err = err; if (parent) { bt_accept_unlink(sk); parent->sk_data_ready(parent); } else { sk->sk_state_change(sk); } break; } release_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
andrei emeltchenkoandrei emeltchenko14085.37%125.00%
johan hedbergjohan hedberg2414.63%375.00%
Total164100.00%4100.00%


static void l2cap_sock_state_change_cb(struct l2cap_chan *chan, int state, int err) { struct sock *sk = chan->data; sk->sk_state = state; if (err) sk->sk_err = err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan2457.14%133.33%
gustavo padovangustavo padovan1842.86%266.67%
Total42100.00%3100.00%


static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, unsigned long hdr_len, unsigned long len, int nb) { struct sock *sk = chan->data; struct sk_buff *skb; int err; l2cap_chan_unlock(chan); skb = bt_skb_send_alloc(sk, hdr_len + len, nb, &err); l2cap_chan_lock(chan); if (!skb) return ERR_PTR(err); skb->priority = sk->sk_priority; bt_cb(skb)->l2cap.chan = chan; return skb; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo padovangustavo padovan4040.00%337.50%
andrei emeltchenkoandrei emeltchenko3434.00%112.50%
marcel holtmannmarcel holtmann1414.00%225.00%
mat martineaumat martineau1010.00%112.50%
johan hedbergjohan hedberg22.00%112.50%
Total100100.00%8100.00%


static void l2cap_sock_ready_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; struct sock *parent; lock_sock(sk); parent = bt_sk(sk)->parent; BT_DBG("sk %p, parent %p", sk, parent); sk->sk_state = BT_CONNECTED; sk->sk_state_change(sk); if (parent) parent->sk_data_ready(parent); release_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
andrei emeltchenkoandrei emeltchenko77100.00%1100.00%
Total77100.00%1100.00%


static void l2cap_sock_defer_cb(struct l2cap_chan *chan) { struct sock *parent, *sk = chan->data; lock_sock(sk); parent = bt_sk(sk)->parent; if (parent) parent->sk_data_ready(parent); release_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
gustavo padovangustavo padovan53100.00%2100.00%
Total53100.00%2100.00%


static void l2cap_sock_resume_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; if (test_and_clear_bit(FLAG_PENDING_SECURITY, &chan->flags)) { sk->sk_state = BT_CONNECTED; chan->state = BT_CONNECTED; } clear_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); sk->sk_state_change(sk); }

Contributors

PersonTokensPropCommitsCommitProp
marcel holtmannmarcel holtmann4060.61%150.00%
johan hedbergjohan hedberg2639.39%150.00%
Total66100.00%2100.00%


static void l2cap_sock_set_shutdown_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; lock_sock(sk); sk->sk_shutdown = SHUTDOWN_MASK; release_sock(sk); }

Contributors

PersonTokensPropCommitsCommitProp
gustavo padovangustavo padovan36100.00%1100.00%
Total36100.00%1100.00%


static long l2cap_sock_get_sndtimeo_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; return sk->sk_sndtimeo; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo padovangustavo padovan25100.00%1100.00%
Total25100.00%1100.00%


static void l2cap_sock_suspend_cb(struct l2cap_chan *chan) { struct sock *sk = chan->data; set_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags); sk->sk_state_change(sk); }

Contributors

PersonTokensPropCommitsCommitProp
johan hedbergjohan hedberg40100.00%1100.00%
Total40100.00%1100.00%

static const struct l2cap_ops l2cap_chan_ops = { .name = "L2CAP Socket Interface", .new_connection = l2cap_sock_new_connection_cb, .recv = l2cap_sock_recv_cb, .close = l2cap_sock_close_cb, .teardown = l2cap_sock_teardown_cb, .state_change = l2cap_sock_state_change_cb, .ready = l2cap_sock_ready_cb, .defer = l2cap_sock_defer_cb, .resume = l2cap_sock_resume_cb, .suspend = l2cap_sock_suspend_cb, .set_shutdown = l2cap_sock_set_shutdown_cb, .get_sndtimeo = l2cap_sock_get_sndtimeo_cb, .alloc_skb = l2cap_sock_alloc_skb_cb, };
static void l2cap_sock_destruct(struct sock *sk) { BT_DBG("sk %p", sk); if (l2cap_pi(sk)->chan) l2cap_chan_put(l2cap_pi(sk)->chan); if (l2cap_pi(sk)->rx_busy_skb) { kfree_skb(l2cap_pi(sk)->rx_busy_skb); l2cap_pi(sk)->rx_busy_skb = NULL; } skb_queue_purge(&sk->sk_receive_queue); skb_queue_purge(&sk->sk_write_queue); }

Contributors

PersonTokensPropCommitsCommitProp
mat martineaumat martineau4048.19%250.00%
gustavo f. padovangustavo f. padovan3440.96%125.00%
sasha levinsasha levin910.84%125.00%
Total83100.00%4100.00%


static void l2cap_skb_msg_name(struct sk_buff *skb, void *msg_name, int *msg_namelen) { DECLARE_SOCKADDR(struct sockaddr_l2 *, la, msg_name); memset(la, 0, sizeof(struct sockaddr_l2)); la->l2_family = AF_BLUETOOTH; la->l2_psm = bt_cb(skb)->l2cap.psm; bacpy(&la->l2_bdaddr, &bt_cb(skb)->l2cap.bdaddr); *msg_namelen = sizeof(struct sockaddr_l2); }

Contributors

PersonTokensPropCommitsCommitProp
marcel holtmannmarcel holtmann7887.64%133.33%
steffen hurrlesteffen hurrle77.87%133.33%
johan hedbergjohan hedberg44.49%133.33%
Total89100.00%3100.00%


static void l2cap_sock_init(struct sock *sk, struct sock *parent) { struct l2cap_chan *chan = l2cap_pi(sk)->chan; BT_DBG("sk %p", sk); if (parent) { struct l2cap_chan *pchan = l2cap_pi(parent)->chan; sk->sk_type = parent->sk_type; bt_sk(sk)->flags = bt_sk(parent)->flags; chan->chan_type = pchan->chan_type; chan->imtu = pchan->imtu; chan->omtu = pchan->omtu; chan->conf_state = pchan->conf_state; chan->mode = pchan->mode; chan->fcs = pchan->fcs; chan->max_tx = pchan->max_tx; chan->tx_win = pchan->tx_win; chan->tx_win_max = pchan->tx_win_max; chan->sec_level = pchan->sec_level; chan->flags = pchan->flags; chan->tx_credits = pchan->tx_credits; chan->rx_credits = pchan->rx_credits; if (chan->chan_type == L2CAP_CHAN_FIXED) { chan->scid = pchan->scid; chan->dcid = pchan->scid; } security_sk_clone(parent, sk); } else { switch (sk->sk_type) { case SOCK_RAW: chan->chan_type = L2CAP_CHAN_RAW; break; case SOCK_DGRAM: chan->chan_type = L2CAP_CHAN_CONN_LESS; bt_sk(sk)->skb_msg_name = l2cap_skb_msg_name; break; case SOCK_SEQPACKET: case SOCK_STREAM: chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; break; } chan->imtu = L2CAP_DEFAULT_MTU; chan->omtu = 0; if (!disable_ertm && sk->sk_type == SOCK_STREAM) { chan->mode = L2CAP_MODE_ERTM; set_bit(CONF_STATE2_DEVICE, &chan->conf_state); } else { chan->mode = L2CAP_MODE_BASIC; } l2cap_chan_set_defaults(chan); } /* Default config options */ chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; chan->data = sk; chan->ops = &l2cap_chan_ops; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan26477.65%842.11%
johan hedbergjohan hedberg4212.35%210.53%
marcel holtmannmarcel holtmann113.24%210.53%
andrei emeltchenkoandrei emeltchenko72.06%421.05%
jaikumar ganeshjaikumar ganesh72.06%15.26%
paul moorepaul moore72.06%15.26%
gustavo padovangustavo padovan20.59%15.26%
Total340100.00%19100.00%

static struct proto l2cap_proto = { .name = "L2CAP", .owner = THIS_MODULE, .obj_size = sizeof(struct l2cap_pinfo) };
static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) { struct sock *sk; struct l2cap_chan *chan; sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto, kern); if (!sk) return NULL; sock_init_data(sock, sk); INIT_LIST_HEAD(&bt_sk(sk)->accept_q); sk->sk_destruct = l2cap_sock_destruct; sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; sock_reset_flag(sk, SOCK_ZAPPED); sk->sk_protocol = proto; sk->sk_state = BT_OPEN; chan = l2cap_chan_create(); if (!chan) { sk_free(sk); return NULL; } l2cap_chan_hold(chan); l2cap_pi(sk)->chan = chan; return sk; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan13591.84%342.86%
mat martineaumat martineau53.40%114.29%
eric w. biedermaneric w. biederman53.40%114.29%
jaganath kanakkasseryjaganath kanakkassery10.68%114.29%
gustavo padovangustavo padovan10.68%114.29%
Total147100.00%7100.00%


static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, int kern) { struct sock *sk; BT_DBG("sock %p", sock); sock->state = SS_UNCONNECTED; if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) return -ESOCKTNOSUPPORT; if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) return -EPERM; sock->ops = &l2cap_sock_ops; sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); if (!sk) return -ENOMEM; l2cap_sock_init(sk, NULL); bt_sock_link(&l2cap_sk_list, sk); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan13092.86%133.33%
masatake yamatomasatake yamato85.71%133.33%
eric w. biedermaneric w. biederman21.43%133.33%
Total140100.00%3100.00%

static const struct proto_ops l2cap_sock_ops = { .family = PF_BLUETOOTH, .owner = THIS_MODULE, .release = l2cap_sock_release, .bind = l2cap_sock_bind, .connect = l2cap_sock_connect, .listen = l2cap_sock_listen, .accept = l2cap_sock_accept, .getname = l2cap_sock_getname, .sendmsg = l2cap_sock_sendmsg, .recvmsg = l2cap_sock_recvmsg, .poll = bt_sock_poll, .ioctl = bt_sock_ioctl, .mmap = sock_no_mmap, .socketpair = sock_no_socketpair, .shutdown = l2cap_sock_shutdown, .setsockopt = l2cap_sock_setsockopt, .getsockopt = l2cap_sock_getsockopt }; static const struct net_proto_family l2cap_sock_family_ops = { .family = PF_BLUETOOTH, .owner = THIS_MODULE, .create = l2cap_sock_create, };
int __init l2cap_init_sockets(void) { int err; BUILD_BUG_ON(sizeof(struct sockaddr_l2) > sizeof(struct sockaddr)); err = proto_register(&l2cap_proto, 0); if (err < 0) return err; err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); if (err < 0) { BT_ERR("L2CAP socket registration failed"); goto error; } err = bt_procfs_init(&init_net, "l2cap", &l2cap_sk_list, NULL); if (err < 0) { BT_ERR("Failed to create L2CAP proc file"); bt_sock_unregister(BTPROTO_L2CAP); goto error; } BT_INFO("L2CAP socket layer initialized"); return 0; error: proto_unregister(&l2cap_proto); return err; }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan6853.97%133.33%
masatake yamatomasatake yamato4334.13%133.33%
marcel holtmannmarcel holtmann1511.90%133.33%
Total126100.00%3100.00%


void l2cap_cleanup_sockets(void) { bt_procfs_cleanup(&init_net, "l2cap"); bt_sock_unregister(BTPROTO_L2CAP); proto_unregister(&l2cap_proto); }

Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan1869.23%150.00%
masatake yamatomasatake yamato830.77%150.00%
Total26100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
gustavo f. padovangustavo f. padovan377652.69%3822.89%
johan hedbergjohan hedberg91712.79%3319.88%
andrei emeltchenkoandrei emeltchenko5487.65%1810.84%
gustavo padovangustavo padovan4736.60%1710.24%
mat martineaumat martineau3424.77%53.01%
marcel holtmannmarcel holtmann3074.28%169.64%
dean jenkinsdean jenkins2183.04%84.82%
jaikumar ganeshjaikumar ganesh1592.22%10.60%
masatake yamatomasatake yamato821.14%10.60%
vinicius costa gomesvinicius costa gomes751.05%31.81%
andre guedesandre guedes710.99%31.81%
peter hurleypeter hurley430.60%21.20%
david herrmanndavid herrmann250.35%10.60%
filip palianfilip palian130.18%10.60%
mathias krausemathias krause130.18%10.60%
vasiliy kulikovvasiliy kulikov130.18%10.60%
jukka taimistojukka taimisto120.17%10.60%
eric w. biedermaneric w. biederman120.17%10.60%
ville tervoville tervo110.15%21.20%
vladimir davydovvladimir davydov90.13%10.60%
sasha levinsasha levin90.13%10.60%
steffen hurrlesteffen hurrle70.10%10.60%
octavian purdilaoctavian purdila70.10%10.60%
paul moorepaul moore70.10%10.60%
santosh nayaksantosh nayak60.08%10.60%
paul gortmakerpaul gortmaker30.04%10.60%
joe perchesjoe perches30.04%10.60%
johannes bergjohannes berg20.03%10.60%
jaganath kanakkasseryjaganath kanakkassery20.03%21.20%
lucas de marchilucas de marchi10.01%10.60%
patrik flyktpatrik flykt10.01%10.60%
Total7167100.00%166100.00%
Directory: net/bluetooth
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