Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/net/irda/af_irda.c b/net/irda/af_irda.c
new file mode 100644
index 0000000..92c6e8d
--- /dev/null
+++ b/net/irda/af_irda.c
@@ -0,0 +1,2586 @@
+/*********************************************************************
+ *
+ * Filename: af_irda.c
+ * Version: 0.9
+ * Description: IrDA sockets implementation
+ * Status: Stable
+ * Author: Dag Brattli <dagb@cs.uit.no>
+ * Created at: Sun May 31 10:12:43 1998
+ * Modified at: Sat Dec 25 21:10:23 1999
+ * Modified by: Dag Brattli <dag@brattli.net>
+ * Sources: af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc.
+ *
+ * Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no>
+ * Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com>
+ * All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ *
+ * Linux-IrDA now supports four different types of IrDA sockets:
+ *
+ * o SOCK_STREAM: TinyTP connections with SAR disabled. The
+ * max SDU size is 0 for conn. of this type
+ * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may
+ * fragment the messages, but will preserve
+ * the message boundaries
+ * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata
+ * (unreliable) transfers
+ * IRDAPROTO_ULTRA: Connectionless and unreliable data
+ *
+ ********************************************************************/
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/init.h>
+#include <linux/net.h>
+#include <linux/irda.h>
+#include <linux/poll.h>
+
+#include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */
+#include <asm/uaccess.h>
+
+#include <net/sock.h>
+#include <net/tcp.h>
+
+#include <net/irda/af_irda.h>
+
+static int irda_create(struct socket *sock, int protocol);
+
+static struct proto_ops irda_stream_ops;
+static struct proto_ops irda_seqpacket_ops;
+static struct proto_ops irda_dgram_ops;
+
+#ifdef CONFIG_IRDA_ULTRA
+static struct proto_ops irda_ultra_ops;
+#define ULTRA_MAX_DATA 382
+#endif /* CONFIG_IRDA_ULTRA */
+
+#define IRDA_MAX_HEADER (TTP_MAX_HEADER)
+
+/*
+ * Function irda_data_indication (instance, sap, skb)
+ *
+ * Received some data from TinyTP. Just queue it on the receive queue
+ *
+ */
+static int irda_data_indication(void *instance, void *sap, struct sk_buff *skb)
+{
+ struct irda_sock *self;
+ struct sock *sk;
+ int err;
+
+ IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
+
+ self = instance;
+ sk = instance;
+ IRDA_ASSERT(sk != NULL, return -1;);
+
+ err = sock_queue_rcv_skb(sk, skb);
+ if (err) {
+ IRDA_DEBUG(1, "%s(), error: no more mem!\n", __FUNCTION__);
+ self->rx_flow = FLOW_STOP;
+
+ /* When we return error, TTP will need to requeue the skb */
+ return err;
+ }
+
+ return 0;
+}
+
+/*
+ * Function irda_disconnect_indication (instance, sap, reason, skb)
+ *
+ * Connection has been closed. Check reason to find out why
+ *
+ */
+static void irda_disconnect_indication(void *instance, void *sap,
+ LM_REASON reason, struct sk_buff *skb)
+{
+ struct irda_sock *self;
+ struct sock *sk;
+
+ self = instance;
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ /* Don't care about it, but let's not leak it */
+ if(skb)
+ dev_kfree_skb(skb);
+
+ sk = instance;
+ if (sk == NULL) {
+ IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n",
+ __FUNCTION__, self);
+ return;
+ }
+
+ /* Prevent race conditions with irda_release() and irda_shutdown() */
+ if (!sock_flag(sk, SOCK_DEAD) && sk->sk_state != TCP_CLOSE) {
+ sk->sk_state = TCP_CLOSE;
+ sk->sk_err = ECONNRESET;
+ sk->sk_shutdown |= SEND_SHUTDOWN;
+
+ sk->sk_state_change(sk);
+ /* Uh-oh... Should use sock_orphan ? */
+ sock_set_flag(sk, SOCK_DEAD);
+
+ /* Close our TSAP.
+ * If we leave it open, IrLMP put it back into the list of
+ * unconnected LSAPs. The problem is that any incoming request
+ * can then be matched to this socket (and it will be, because
+ * it is at the head of the list). This would prevent any
+ * listening socket waiting on the same TSAP to get those
+ * requests. Some apps forget to close sockets, or hang to it
+ * a bit too long, so we may stay in this dead state long
+ * enough to be noticed...
+ * Note : all socket function do check sk->sk_state, so we are
+ * safe...
+ * Jean II
+ */
+ if (self->tsap) {
+ irttp_close_tsap(self->tsap);
+ self->tsap = NULL;
+ }
+ }
+
+ /* Note : once we are there, there is not much you want to do
+ * with the socket anymore, apart from closing it.
+ * For example, bind() and connect() won't reset sk->sk_err,
+ * sk->sk_shutdown and sk->sk_flags to valid values...
+ * Jean II
+ */
+}
+
+/*
+ * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb)
+ *
+ * Connections has been confirmed by the remote device
+ *
+ */
+static void irda_connect_confirm(void *instance, void *sap,
+ struct qos_info *qos,
+ __u32 max_sdu_size, __u8 max_header_size,
+ struct sk_buff *skb)
+{
+ struct irda_sock *self;
+ struct sock *sk;
+
+ self = instance;
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ sk = instance;
+ if (sk == NULL) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ dev_kfree_skb(skb);
+ // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb);
+
+ /* How much header space do we need to reserve */
+ self->max_header_size = max_header_size;
+
+ /* IrTTP max SDU size in transmit direction */
+ self->max_sdu_size_tx = max_sdu_size;
+
+ /* Find out what the largest chunk of data that we can transmit is */
+ switch (sk->sk_type) {
+ case SOCK_STREAM:
+ if (max_sdu_size != 0) {
+ IRDA_ERROR("%s: max_sdu_size must be 0\n",
+ __FUNCTION__);
+ return;
+ }
+ self->max_data_size = irttp_get_max_seg_size(self->tsap);
+ break;
+ case SOCK_SEQPACKET:
+ if (max_sdu_size == 0) {
+ IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
+ __FUNCTION__);
+ return;
+ }
+ self->max_data_size = max_sdu_size;
+ break;
+ default:
+ self->max_data_size = irttp_get_max_seg_size(self->tsap);
+ };
+
+ IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __FUNCTION__,
+ self->max_data_size);
+
+ memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
+
+ /* We are now connected! */
+ sk->sk_state = TCP_ESTABLISHED;
+ sk->sk_state_change(sk);
+}
+
+/*
+ * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata)
+ *
+ * Incoming connection
+ *
+ */
+static void irda_connect_indication(void *instance, void *sap,
+ struct qos_info *qos, __u32 max_sdu_size,
+ __u8 max_header_size, struct sk_buff *skb)
+{
+ struct irda_sock *self;
+ struct sock *sk;
+
+ self = instance;
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ sk = instance;
+ if (sk == NULL) {
+ dev_kfree_skb(skb);
+ return;
+ }
+
+ /* How much header space do we need to reserve */
+ self->max_header_size = max_header_size;
+
+ /* IrTTP max SDU size in transmit direction */
+ self->max_sdu_size_tx = max_sdu_size;
+
+ /* Find out what the largest chunk of data that we can transmit is */
+ switch (sk->sk_type) {
+ case SOCK_STREAM:
+ if (max_sdu_size != 0) {
+ IRDA_ERROR("%s: max_sdu_size must be 0\n",
+ __FUNCTION__);
+ kfree_skb(skb);
+ return;
+ }
+ self->max_data_size = irttp_get_max_seg_size(self->tsap);
+ break;
+ case SOCK_SEQPACKET:
+ if (max_sdu_size == 0) {
+ IRDA_ERROR("%s: max_sdu_size cannot be 0\n",
+ __FUNCTION__);
+ kfree_skb(skb);
+ return;
+ }
+ self->max_data_size = max_sdu_size;
+ break;
+ default:
+ self->max_data_size = irttp_get_max_seg_size(self->tsap);
+ };
+
+ IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __FUNCTION__,
+ self->max_data_size);
+
+ memcpy(&self->qos_tx, qos, sizeof(struct qos_info));
+
+ skb_queue_tail(&sk->sk_receive_queue, skb);
+ sk->sk_state_change(sk);
+}
+
+/*
+ * Function irda_connect_response (handle)
+ *
+ * Accept incoming connection
+ *
+ */
+static void irda_connect_response(struct irda_sock *self)
+{
+ struct sk_buff *skb;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ IRDA_ASSERT(self != NULL, return;);
+
+ skb = dev_alloc_skb(64);
+ if (skb == NULL) {
+ IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n",
+ __FUNCTION__);
+ return;
+ }
+
+ /* Reserve space for MUX_CONTROL and LAP header */
+ skb_reserve(skb, IRDA_MAX_HEADER);
+
+ irttp_connect_response(self->tsap, self->max_sdu_size_rx, skb);
+}
+
+/*
+ * Function irda_flow_indication (instance, sap, flow)
+ *
+ * Used by TinyTP to tell us if it can accept more data or not
+ *
+ */
+static void irda_flow_indication(void *instance, void *sap, LOCAL_FLOW flow)
+{
+ struct irda_sock *self;
+ struct sock *sk;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ self = instance;
+ sk = instance;
+ IRDA_ASSERT(sk != NULL, return;);
+
+ switch (flow) {
+ case FLOW_STOP:
+ IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n",
+ __FUNCTION__);
+ self->tx_flow = flow;
+ break;
+ case FLOW_START:
+ self->tx_flow = flow;
+ IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n",
+ __FUNCTION__);
+ wake_up_interruptible(sk->sk_sleep);
+ break;
+ default:
+ IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __FUNCTION__);
+ /* Unknown flow command, better stop */
+ self->tx_flow = flow;
+ break;
+ }
+}
+
+/*
+ * Function irda_getvalue_confirm (obj_id, value, priv)
+ *
+ * Got answer from remote LM-IAS, just pass object to requester...
+ *
+ * Note : duplicate from above, but we need our own version that
+ * doesn't touch the dtsap_sel and save the full value structure...
+ */
+static void irda_getvalue_confirm(int result, __u16 obj_id,
+ struct ias_value *value, void *priv)
+{
+ struct irda_sock *self;
+
+ self = (struct irda_sock *) priv;
+ if (!self) {
+ IRDA_WARNING("%s: lost myself!\n", __FUNCTION__);
+ return;
+ }
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ /* We probably don't need to make any more queries */
+ iriap_close(self->iriap);
+ self->iriap = NULL;
+
+ /* Check if request succeeded */
+ if (result != IAS_SUCCESS) {
+ IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __FUNCTION__,
+ result);
+
+ self->errno = result; /* We really need it later */
+
+ /* Wake up any processes waiting for result */
+ wake_up_interruptible(&self->query_wait);
+
+ return;
+ }
+
+ /* Pass the object to the caller (so the caller must delete it) */
+ self->ias_result = value;
+ self->errno = 0;
+
+ /* Wake up any processes waiting for result */
+ wake_up_interruptible(&self->query_wait);
+}
+
+/*
+ * Function irda_selective_discovery_indication (discovery)
+ *
+ * Got a selective discovery indication from IrLMP.
+ *
+ * IrLMP is telling us that this node is new and matching our hint bit
+ * filter. Wake up any process waiting for answer...
+ */
+static void irda_selective_discovery_indication(discinfo_t *discovery,
+ DISCOVERY_MODE mode,
+ void *priv)
+{
+ struct irda_sock *self;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ self = (struct irda_sock *) priv;
+ if (!self) {
+ IRDA_WARNING("%s: lost myself!\n", __FUNCTION__);
+ return;
+ }
+
+ /* Pass parameter to the caller */
+ self->cachedaddr = discovery->daddr;
+
+ /* Wake up process if its waiting for device to be discovered */
+ wake_up_interruptible(&self->query_wait);
+}
+
+/*
+ * Function irda_discovery_timeout (priv)
+ *
+ * Timeout in the selective discovery process
+ *
+ * We were waiting for a node to be discovered, but nothing has come up
+ * so far. Wake up the user and tell him that we failed...
+ */
+static void irda_discovery_timeout(u_long priv)
+{
+ struct irda_sock *self;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ self = (struct irda_sock *) priv;
+ IRDA_ASSERT(self != NULL, return;);
+
+ /* Nothing for the caller */
+ self->cachelog = NULL;
+ self->cachedaddr = 0;
+ self->errno = -ETIME;
+
+ /* Wake up process if its still waiting... */
+ wake_up_interruptible(&self->query_wait);
+}
+
+/*
+ * Function irda_open_tsap (self)
+ *
+ * Open local Transport Service Access Point (TSAP)
+ *
+ */
+static int irda_open_tsap(struct irda_sock *self, __u8 tsap_sel, char *name)
+{
+ notify_t notify;
+
+ if (self->tsap) {
+ IRDA_WARNING("%s: busy!\n", __FUNCTION__);
+ return -EBUSY;
+ }
+
+ /* Initialize callbacks to be used by the IrDA stack */
+ irda_notify_init(¬ify);
+ notify.connect_confirm = irda_connect_confirm;
+ notify.connect_indication = irda_connect_indication;
+ notify.disconnect_indication = irda_disconnect_indication;
+ notify.data_indication = irda_data_indication;
+ notify.udata_indication = irda_data_indication;
+ notify.flow_indication = irda_flow_indication;
+ notify.instance = self;
+ strncpy(notify.name, name, NOTIFY_MAX_NAME);
+
+ self->tsap = irttp_open_tsap(tsap_sel, DEFAULT_INITIAL_CREDIT,
+ ¬ify);
+ if (self->tsap == NULL) {
+ IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n",
+ __FUNCTION__);
+ return -ENOMEM;
+ }
+ /* Remember which TSAP selector we actually got */
+ self->stsap_sel = self->tsap->stsap_sel;
+
+ return 0;
+}
+
+/*
+ * Function irda_open_lsap (self)
+ *
+ * Open local Link Service Access Point (LSAP). Used for opening Ultra
+ * sockets
+ */
+#ifdef CONFIG_IRDA_ULTRA
+static int irda_open_lsap(struct irda_sock *self, int pid)
+{
+ notify_t notify;
+
+ if (self->lsap) {
+ IRDA_WARNING("%s(), busy!\n", __FUNCTION__);
+ return -EBUSY;
+ }
+
+ /* Initialize callbacks to be used by the IrDA stack */
+ irda_notify_init(¬ify);
+ notify.udata_indication = irda_data_indication;
+ notify.instance = self;
+ strncpy(notify.name, "Ultra", NOTIFY_MAX_NAME);
+
+ self->lsap = irlmp_open_lsap(LSAP_CONNLESS, ¬ify, pid);
+ if (self->lsap == NULL) {
+ IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __FUNCTION__);
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+#endif /* CONFIG_IRDA_ULTRA */
+
+/*
+ * Function irda_find_lsap_sel (self, name)
+ *
+ * Try to lookup LSAP selector in remote LM-IAS
+ *
+ * Basically, we start a IAP query, and then go to sleep. When the query
+ * return, irda_getvalue_confirm will wake us up, and we can examine the
+ * result of the query...
+ * Note that in some case, the query fail even before we go to sleep,
+ * creating some races...
+ */
+static int irda_find_lsap_sel(struct irda_sock *self, char *name)
+{
+ IRDA_DEBUG(2, "%s(%p, %s)\n", __FUNCTION__, self, name);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ if (self->iriap) {
+ IRDA_WARNING("%s(): busy with a previous query\n",
+ __FUNCTION__);
+ return -EBUSY;
+ }
+
+ self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
+ irda_getvalue_confirm);
+ if(self->iriap == NULL)
+ return -ENOMEM;
+
+ /* Treat unexpected wakeup as disconnect */
+ self->errno = -EHOSTUNREACH;
+
+ /* Query remote LM-IAS */
+ iriap_getvaluebyclass_request(self->iriap, self->saddr, self->daddr,
+ name, "IrDA:TinyTP:LsapSel");
+
+ /* Wait for answer, if not yet finished (or failed) */
+ if (wait_event_interruptible(self->query_wait, (self->iriap==NULL)))
+ /* Treat signals as disconnect */
+ return -EHOSTUNREACH;
+
+ /* Check what happened */
+ if (self->errno)
+ {
+ /* Requested object/attribute doesn't exist */
+ if((self->errno == IAS_CLASS_UNKNOWN) ||
+ (self->errno == IAS_ATTRIB_UNKNOWN))
+ return (-EADDRNOTAVAIL);
+ else
+ return (-EHOSTUNREACH);
+ }
+
+ /* Get the remote TSAP selector */
+ switch (self->ias_result->type) {
+ case IAS_INTEGER:
+ IRDA_DEBUG(4, "%s() int=%d\n",
+ __FUNCTION__, self->ias_result->t.integer);
+
+ if (self->ias_result->t.integer != -1)
+ self->dtsap_sel = self->ias_result->t.integer;
+ else
+ self->dtsap_sel = 0;
+ break;
+ default:
+ self->dtsap_sel = 0;
+ IRDA_DEBUG(0, "%s(), bad type!\n", __FUNCTION__);
+ break;
+ }
+ if (self->ias_result)
+ irias_delete_value(self->ias_result);
+
+ if (self->dtsap_sel)
+ return 0;
+
+ return -EADDRNOTAVAIL;
+}
+
+/*
+ * Function irda_discover_daddr_and_lsap_sel (self, name)
+ *
+ * This try to find a device with the requested service.
+ *
+ * It basically look into the discovery log. For each address in the list,
+ * it queries the LM-IAS of the device to find if this device offer
+ * the requested service.
+ * If there is more than one node supporting the service, we complain
+ * to the user (it should move devices around).
+ * The, we set both the destination address and the lsap selector to point
+ * on the service on the unique device we have found.
+ *
+ * Note : this function fails if there is more than one device in range,
+ * because IrLMP doesn't disconnect the LAP when the last LSAP is closed.
+ * Moreover, we would need to wait the LAP disconnection...
+ */
+static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name)
+{
+ discinfo_t *discoveries; /* Copy of the discovery log */
+ int number; /* Number of nodes in the log */
+ int i;
+ int err = -ENETUNREACH;
+ __u32 daddr = DEV_ADDR_ANY; /* Address we found the service on */
+ __u8 dtsap_sel = 0x0; /* TSAP associated with it */
+
+ IRDA_DEBUG(2, "%s(), name=%s\n", __FUNCTION__, name);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ /* Ask lmp for the current discovery log
+ * Note : we have to use irlmp_get_discoveries(), as opposed
+ * to play with the cachelog directly, because while we are
+ * making our ias query, le log might change... */
+ discoveries = irlmp_get_discoveries(&number, self->mask.word,
+ self->nslots);
+ /* Check if the we got some results */
+ if (discoveries == NULL)
+ return -ENETUNREACH; /* No nodes discovered */
+
+ /*
+ * Now, check all discovered devices (if any), and connect
+ * client only about the services that the client is
+ * interested in...
+ */
+ for(i = 0; i < number; i++) {
+ /* Try the address in the log */
+ self->daddr = discoveries[i].daddr;
+ self->saddr = 0x0;
+ IRDA_DEBUG(1, "%s(), trying daddr = %08x\n",
+ __FUNCTION__, self->daddr);
+
+ /* Query remote LM-IAS for this service */
+ err = irda_find_lsap_sel(self, name);
+ switch (err) {
+ case 0:
+ /* We found the requested service */
+ if(daddr != DEV_ADDR_ANY) {
+ IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n",
+ __FUNCTION__, name);
+ self->daddr = DEV_ADDR_ANY;
+ kfree(discoveries);
+ return(-ENOTUNIQ);
+ }
+ /* First time we found that one, save it ! */
+ daddr = self->daddr;
+ dtsap_sel = self->dtsap_sel;
+ break;
+ case -EADDRNOTAVAIL:
+ /* Requested service simply doesn't exist on this node */
+ break;
+ default:
+ /* Something bad did happen :-( */
+ IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __FUNCTION__);
+ self->daddr = DEV_ADDR_ANY;
+ kfree(discoveries);
+ return(-EHOSTUNREACH);
+ break;
+ }
+ }
+ /* Cleanup our copy of the discovery log */
+ kfree(discoveries);
+
+ /* Check out what we found */
+ if(daddr == DEV_ADDR_ANY) {
+ IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n",
+ __FUNCTION__, name);
+ self->daddr = DEV_ADDR_ANY;
+ return(-EADDRNOTAVAIL);
+ }
+
+ /* Revert back to discovered device & service */
+ self->daddr = daddr;
+ self->saddr = 0x0;
+ self->dtsap_sel = dtsap_sel;
+
+ IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n",
+ __FUNCTION__, name, self->daddr);
+
+ return 0;
+}
+
+/*
+ * Function irda_getname (sock, uaddr, uaddr_len, peer)
+ *
+ * Return the our own, or peers socket address (sockaddr_irda)
+ *
+ */
+static int irda_getname(struct socket *sock, struct sockaddr *uaddr,
+ int *uaddr_len, int peer)
+{
+ struct sockaddr_irda saddr;
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+
+ if (peer) {
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ saddr.sir_family = AF_IRDA;
+ saddr.sir_lsap_sel = self->dtsap_sel;
+ saddr.sir_addr = self->daddr;
+ } else {
+ saddr.sir_family = AF_IRDA;
+ saddr.sir_lsap_sel = self->stsap_sel;
+ saddr.sir_addr = self->saddr;
+ }
+
+ IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __FUNCTION__, saddr.sir_lsap_sel);
+ IRDA_DEBUG(1, "%s(), addr = %08x\n", __FUNCTION__, saddr.sir_addr);
+
+ /* uaddr_len come to us uninitialised */
+ *uaddr_len = sizeof (struct sockaddr_irda);
+ memcpy(uaddr, &saddr, *uaddr_len);
+
+ return 0;
+}
+
+/*
+ * Function irda_listen (sock, backlog)
+ *
+ * Just move to the listen state
+ *
+ */
+static int irda_listen(struct socket *sock, int backlog)
+{
+ struct sock *sk = sock->sk;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
+ (sk->sk_type != SOCK_DGRAM))
+ return -EOPNOTSUPP;
+
+ if (sk->sk_state != TCP_LISTEN) {
+ sk->sk_max_ack_backlog = backlog;
+ sk->sk_state = TCP_LISTEN;
+
+ return 0;
+ }
+
+ return -EOPNOTSUPP;
+}
+
+/*
+ * Function irda_bind (sock, uaddr, addr_len)
+ *
+ * Used by servers to register their well known TSAP
+ *
+ */
+static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
+{
+ struct sock *sk = sock->sk;
+ struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
+ struct irda_sock *self = irda_sk(sk);
+ int err;
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ if (addr_len != sizeof(struct sockaddr_irda))
+ return -EINVAL;
+
+#ifdef CONFIG_IRDA_ULTRA
+ /* Special care for Ultra sockets */
+ if ((sk->sk_type == SOCK_DGRAM) &&
+ (sk->sk_protocol == IRDAPROTO_ULTRA)) {
+ self->pid = addr->sir_lsap_sel;
+ if (self->pid & 0x80) {
+ IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __FUNCTION__);
+ return -EOPNOTSUPP;
+ }
+ err = irda_open_lsap(self, self->pid);
+ if (err < 0)
+ return err;
+
+ /* Pretend we are connected */
+ sock->state = SS_CONNECTED;
+ sk->sk_state = TCP_ESTABLISHED;
+
+ return 0;
+ }
+#endif /* CONFIG_IRDA_ULTRA */
+
+ err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name);
+ if (err < 0)
+ return err;
+
+ /* Register with LM-IAS */
+ self->ias_obj = irias_new_object(addr->sir_name, jiffies);
+ irias_add_integer_attrib(self->ias_obj, "IrDA:TinyTP:LsapSel",
+ self->stsap_sel, IAS_KERNEL_ATTR);
+ irias_insert_object(self->ias_obj);
+
+ return 0;
+}
+
+/*
+ * Function irda_accept (sock, newsock, flags)
+ *
+ * Wait for incoming connection
+ *
+ */
+static int irda_accept(struct socket *sock, struct socket *newsock, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *new, *self = irda_sk(sk);
+ struct sock *newsk;
+ struct sk_buff *skb;
+ int err;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ err = irda_create(newsock, sk->sk_protocol);
+ if (err)
+ return err;
+
+ if (sock->state != SS_UNCONNECTED)
+ return -EINVAL;
+
+ if ((sk = sock->sk) == NULL)
+ return -EINVAL;
+
+ if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) &&
+ (sk->sk_type != SOCK_DGRAM))
+ return -EOPNOTSUPP;
+
+ if (sk->sk_state != TCP_LISTEN)
+ return -EINVAL;
+
+ /*
+ * The read queue this time is holding sockets ready to use
+ * hooked into the SABM we saved
+ */
+
+ /*
+ * We can perform the accept only if there is incoming data
+ * on the listening socket.
+ * So, we will block the caller until we receive any data.
+ * If the caller was waiting on select() or poll() before
+ * calling us, the data is waiting for us ;-)
+ * Jean II
+ */
+ skb = skb_dequeue(&sk->sk_receive_queue);
+ if (skb == NULL) {
+ int ret = 0;
+ DECLARE_WAITQUEUE(waitq, current);
+
+ /* Non blocking operation */
+ if (flags & O_NONBLOCK)
+ return -EWOULDBLOCK;
+
+ /* The following code is a cut'n'paste of the
+ * wait_event_interruptible() macro.
+ * We don't us the macro because the condition has
+ * side effects : we want to make sure that only one
+ * skb get dequeued - Jean II */
+ add_wait_queue(sk->sk_sleep, &waitq);
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ skb = skb_dequeue(&sk->sk_receive_queue);
+ if (skb != NULL)
+ break;
+ if (!signal_pending(current)) {
+ schedule();
+ continue;
+ }
+ ret = -ERESTARTSYS;
+ break;
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(sk->sk_sleep, &waitq);
+ if(ret)
+ return -ERESTARTSYS;
+ }
+
+ newsk = newsock->sk;
+ newsk->sk_state = TCP_ESTABLISHED;
+
+ new = irda_sk(newsk);
+ IRDA_ASSERT(new != NULL, return -1;);
+
+ /* Now attach up the new socket */
+ new->tsap = irttp_dup(self->tsap, new);
+ if (!new->tsap) {
+ IRDA_DEBUG(0, "%s(), dup failed!\n", __FUNCTION__);
+ kfree_skb(skb);
+ return -1;
+ }
+
+ new->stsap_sel = new->tsap->stsap_sel;
+ new->dtsap_sel = new->tsap->dtsap_sel;
+ new->saddr = irttp_get_saddr(new->tsap);
+ new->daddr = irttp_get_daddr(new->tsap);
+
+ new->max_sdu_size_tx = self->max_sdu_size_tx;
+ new->max_sdu_size_rx = self->max_sdu_size_rx;
+ new->max_data_size = self->max_data_size;
+ new->max_header_size = self->max_header_size;
+
+ memcpy(&new->qos_tx, &self->qos_tx, sizeof(struct qos_info));
+
+ /* Clean up the original one to keep it in listen state */
+ irttp_listen(self->tsap);
+
+ /* Wow ! What is that ? Jean II */
+ skb->sk = NULL;
+ skb->destructor = NULL;
+ kfree_skb(skb);
+ sk->sk_ack_backlog--;
+
+ newsock->state = SS_CONNECTED;
+
+ irda_connect_response(new);
+
+ return 0;
+}
+
+/*
+ * Function irda_connect (sock, uaddr, addr_len, flags)
+ *
+ * Connect to a IrDA device
+ *
+ * The main difference with a "standard" connect is that with IrDA we need
+ * to resolve the service name into a TSAP selector (in TCP, port number
+ * doesn't have to be resolved).
+ * Because of this service name resoltion, we can offer "auto-connect",
+ * where we connect to a service without specifying a destination address.
+ *
+ * Note : by consulting "errno", the user space caller may learn the cause
+ * of the failure. Most of them are visible in the function, others may come
+ * from subroutines called and are listed here :
+ * o EBUSY : already processing a connect
+ * o EHOSTUNREACH : bad addr->sir_addr argument
+ * o EADDRNOTAVAIL : bad addr->sir_name argument
+ * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect)
+ * o ENETUNREACH : no node found on the network (auto-connect)
+ */
+static int irda_connect(struct socket *sock, struct sockaddr *uaddr,
+ int addr_len, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr;
+ struct irda_sock *self = irda_sk(sk);
+ int err;
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ /* Don't allow connect for Ultra sockets */
+ if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA))
+ return -ESOCKTNOSUPPORT;
+
+ if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) {
+ sock->state = SS_CONNECTED;
+ return 0; /* Connect completed during a ERESTARTSYS event */
+ }
+
+ if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) {
+ sock->state = SS_UNCONNECTED;
+ return -ECONNREFUSED;
+ }
+
+ if (sk->sk_state == TCP_ESTABLISHED)
+ return -EISCONN; /* No reconnect on a seqpacket socket */
+
+ sk->sk_state = TCP_CLOSE;
+ sock->state = SS_UNCONNECTED;
+
+ if (addr_len != sizeof(struct sockaddr_irda))
+ return -EINVAL;
+
+ /* Check if user supplied any destination device address */
+ if ((!addr->sir_addr) || (addr->sir_addr == DEV_ADDR_ANY)) {
+ /* Try to find one suitable */
+ err = irda_discover_daddr_and_lsap_sel(self, addr->sir_name);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __FUNCTION__);
+ return err;
+ }
+ } else {
+ /* Use the one provided by the user */
+ self->daddr = addr->sir_addr;
+ IRDA_DEBUG(1, "%s(), daddr = %08x\n", __FUNCTION__, self->daddr);
+
+ /* If we don't have a valid service name, we assume the
+ * user want to connect on a specific LSAP. Prevent
+ * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */
+ if((addr->sir_name[0] != '\0') ||
+ (addr->sir_lsap_sel >= 0x70)) {
+ /* Query remote LM-IAS using service name */
+ err = irda_find_lsap_sel(self, addr->sir_name);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), connect failed!\n", __FUNCTION__);
+ return err;
+ }
+ } else {
+ /* Directly connect to the remote LSAP
+ * specified by the sir_lsap field.
+ * Please use with caution, in IrDA LSAPs are
+ * dynamic and there is no "well-known" LSAP. */
+ self->dtsap_sel = addr->sir_lsap_sel;
+ }
+ }
+
+ /* Check if we have opened a local TSAP */
+ if (!self->tsap)
+ irda_open_tsap(self, LSAP_ANY, addr->sir_name);
+
+ /* Move to connecting socket, start sending Connect Requests */
+ sock->state = SS_CONNECTING;
+ sk->sk_state = TCP_SYN_SENT;
+
+ /* Connect to remote device */
+ err = irttp_connect_request(self->tsap, self->dtsap_sel,
+ self->saddr, self->daddr, NULL,
+ self->max_sdu_size_rx, NULL);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), connect failed!\n", __FUNCTION__);
+ return err;
+ }
+
+ /* Now the loop */
+ if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK))
+ return -EINPROGRESS;
+
+ if (wait_event_interruptible(*(sk->sk_sleep),
+ (sk->sk_state != TCP_SYN_SENT)))
+ return -ERESTARTSYS;
+
+ if (sk->sk_state != TCP_ESTABLISHED) {
+ sock->state = SS_UNCONNECTED;
+ return sock_error(sk); /* Always set at this point */
+ }
+
+ sock->state = SS_CONNECTED;
+
+ /* At this point, IrLMP has assigned our source address */
+ self->saddr = irttp_get_saddr(self->tsap);
+
+ return 0;
+}
+
+static struct proto irda_proto = {
+ .name = "IRDA",
+ .owner = THIS_MODULE,
+ .obj_size = sizeof(struct irda_sock),
+};
+
+/*
+ * Function irda_create (sock, protocol)
+ *
+ * Create IrDA socket
+ *
+ */
+static int irda_create(struct socket *sock, int protocol)
+{
+ struct sock *sk;
+ struct irda_sock *self;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ /* Check for valid socket type */
+ switch (sock->type) {
+ case SOCK_STREAM: /* For TTP connections with SAR disabled */
+ case SOCK_SEQPACKET: /* For TTP connections with SAR enabled */
+ case SOCK_DGRAM: /* For TTP Unitdata or LMP Ultra transfers */
+ break;
+ default:
+ return -ESOCKTNOSUPPORT;
+ }
+
+ /* Allocate networking socket */
+ sk = sk_alloc(PF_IRDA, GFP_ATOMIC, &irda_proto, 1);
+ if (sk == NULL)
+ return -ENOMEM;
+
+ self = irda_sk(sk);
+ IRDA_DEBUG(2, "%s() : self is %p\n", __FUNCTION__, self);
+
+ init_waitqueue_head(&self->query_wait);
+
+ /* Initialise networking socket struct */
+ sock_init_data(sock, sk); /* Note : set sk->sk_refcnt to 1 */
+ sk->sk_family = PF_IRDA;
+ sk->sk_protocol = protocol;
+
+ switch (sock->type) {
+ case SOCK_STREAM:
+ sock->ops = &irda_stream_ops;
+ self->max_sdu_size_rx = TTP_SAR_DISABLE;
+ break;
+ case SOCK_SEQPACKET:
+ sock->ops = &irda_seqpacket_ops;
+ self->max_sdu_size_rx = TTP_SAR_UNBOUND;
+ break;
+ case SOCK_DGRAM:
+ switch (protocol) {
+#ifdef CONFIG_IRDA_ULTRA
+ case IRDAPROTO_ULTRA:
+ sock->ops = &irda_ultra_ops;
+ /* Initialise now, because we may send on unbound
+ * sockets. Jean II */
+ self->max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER;
+ self->max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER;
+ break;
+#endif /* CONFIG_IRDA_ULTRA */
+ case IRDAPROTO_UNITDATA:
+ sock->ops = &irda_dgram_ops;
+ /* We let Unitdata conn. be like seqpack conn. */
+ self->max_sdu_size_rx = TTP_SAR_UNBOUND;
+ break;
+ default:
+ IRDA_ERROR("%s: protocol not supported!\n",
+ __FUNCTION__);
+ return -ESOCKTNOSUPPORT;
+ }
+ break;
+ default:
+ return -ESOCKTNOSUPPORT;
+ }
+
+ /* Register as a client with IrLMP */
+ self->ckey = irlmp_register_client(0, NULL, NULL, NULL);
+ self->mask.word = 0xffff;
+ self->rx_flow = self->tx_flow = FLOW_START;
+ self->nslots = DISCOVERY_DEFAULT_SLOTS;
+ self->daddr = DEV_ADDR_ANY; /* Until we get connected */
+ self->saddr = 0x0; /* so IrLMP assign us any link */
+ return 0;
+}
+
+/*
+ * Function irda_destroy_socket (self)
+ *
+ * Destroy socket
+ *
+ */
+static void irda_destroy_socket(struct irda_sock *self)
+{
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ IRDA_ASSERT(self != NULL, return;);
+
+ /* Unregister with IrLMP */
+ irlmp_unregister_client(self->ckey);
+ irlmp_unregister_service(self->skey);
+
+ /* Unregister with LM-IAS */
+ if (self->ias_obj) {
+ irias_delete_object(self->ias_obj);
+ self->ias_obj = NULL;
+ }
+
+ if (self->iriap) {
+ iriap_close(self->iriap);
+ self->iriap = NULL;
+ }
+
+ if (self->tsap) {
+ irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
+ irttp_close_tsap(self->tsap);
+ self->tsap = NULL;
+ }
+#ifdef CONFIG_IRDA_ULTRA
+ if (self->lsap) {
+ irlmp_close_lsap(self->lsap);
+ self->lsap = NULL;
+ }
+#endif /* CONFIG_IRDA_ULTRA */
+}
+
+/*
+ * Function irda_release (sock)
+ */
+static int irda_release(struct socket *sock)
+{
+ struct sock *sk = sock->sk;
+
+ IRDA_DEBUG(2, "%s()\n", __FUNCTION__);
+
+ if (sk == NULL)
+ return 0;
+
+ sk->sk_state = TCP_CLOSE;
+ sk->sk_shutdown |= SEND_SHUTDOWN;
+ sk->sk_state_change(sk);
+
+ /* Destroy IrDA socket */
+ irda_destroy_socket(irda_sk(sk));
+
+ sock_orphan(sk);
+ sock->sk = NULL;
+
+ /* Purge queues (see sock_init_data()) */
+ skb_queue_purge(&sk->sk_receive_queue);
+
+ /* Destroy networking socket if we are the last reference on it,
+ * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */
+ sock_put(sk);
+
+ /* Notes on socket locking and deallocation... - Jean II
+ * In theory we should put pairs of sock_hold() / sock_put() to
+ * prevent the socket to be destroyed whenever there is an
+ * outstanding request or outstanding incoming packet or event.
+ *
+ * 1) This may include IAS request, both in connect and getsockopt.
+ * Unfortunately, the situation is a bit more messy than it looks,
+ * because we close iriap and kfree(self) above.
+ *
+ * 2) This may include selective discovery in getsockopt.
+ * Same stuff as above, irlmp registration and self are gone.
+ *
+ * Probably 1 and 2 may not matter, because it's all triggered
+ * by a process and the socket layer already prevent the
+ * socket to go away while a process is holding it, through
+ * sockfd_put() and fput()...
+ *
+ * 3) This may include deferred TSAP closure. In particular,
+ * we may receive a late irda_disconnect_indication()
+ * Fortunately, (tsap_cb *)->close_pend should protect us
+ * from that.
+ *
+ * I did some testing on SMP, and it looks solid. And the socket
+ * memory leak is now gone... - Jean II
+ */
+
+ return 0;
+}
+
+/*
+ * Function irda_sendmsg (iocb, sock, msg, len)
+ *
+ * Send message down to TinyTP. This function is used for both STREAM and
+ * SEQPACK services. This is possible since it forces the client to
+ * fragment the message if necessary
+ */
+static int irda_sendmsg(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self;
+ struct sk_buff *skb;
+ unsigned char *asmptr;
+ int err;
+
+ IRDA_DEBUG(4, "%s(), len=%zd\n", __FUNCTION__, len);
+
+ /* Note : socket.c set MSG_EOR on SEQPACKET sockets */
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_EOR|MSG_CMSG_COMPAT))
+ return -EINVAL;
+
+ if (sk->sk_shutdown & SEND_SHUTDOWN) {
+ send_sig(SIGPIPE, current, 0);
+ return -EPIPE;
+ }
+
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ self = irda_sk(sk);
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ /* Check if IrTTP is wants us to slow down */
+
+ if (wait_event_interruptible(*(sk->sk_sleep),
+ (self->tx_flow != FLOW_STOP || sk->sk_state != TCP_ESTABLISHED)))
+ return -ERESTARTSYS;
+
+ /* Check if we are still connected */
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ /* Check that we don't send out to big frames */
+ if (len > self->max_data_size) {
+ IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n",
+ __FUNCTION__, len, self->max_data_size);
+ len = self->max_data_size;
+ }
+
+ skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return -ENOBUFS;
+
+ skb_reserve(skb, self->max_header_size + 16);
+
+ asmptr = skb->h.raw = skb_put(skb, len);
+ err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
+ if (err) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ /*
+ * Just send the message to TinyTP, and let it deal with possible
+ * errors. No need to duplicate all that here
+ */
+ err = irttp_data_request(self->tsap, skb);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), err=%d\n", __FUNCTION__, err);
+ return err;
+ }
+ /* Tell client how much data we actually sent */
+ return len;
+}
+
+/*
+ * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags)
+ *
+ * Try to receive message and copy it to user. The frame is discarded
+ * after being read, regardless of how much the user actually read
+ */
+static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t size, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+ struct sk_buff *skb;
+ size_t copied;
+ int err;
+
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT,
+ flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return err;
+
+ skb->h.raw = skb->data;
+ copied = skb->len;
+
+ if (copied > size) {
+ IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n",
+ __FUNCTION__, copied, size);
+ copied = size;
+ msg->msg_flags |= MSG_TRUNC;
+ }
+ skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
+
+ skb_free_datagram(sk, skb);
+
+ /*
+ * Check if we have previously stopped IrTTP and we know
+ * have more free space in our rx_queue. If so tell IrTTP
+ * to start delivering frames again before our rx_queue gets
+ * empty
+ */
+ if (self->rx_flow == FLOW_STOP) {
+ if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
+ IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __FUNCTION__);
+ self->rx_flow = FLOW_START;
+ irttp_flow_request(self->tsap, FLOW_START);
+ }
+ }
+
+ return copied;
+}
+
+/*
+ * Function irda_recvmsg_stream (iocb, sock, msg, size, flags)
+ */
+static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t size, int flags)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+ int noblock = flags & MSG_DONTWAIT;
+ size_t copied = 0;
+ int target = 1;
+ DECLARE_WAITQUEUE(waitq, current);
+
+ IRDA_DEBUG(3, "%s()\n", __FUNCTION__);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ if (sock->flags & __SO_ACCEPTCON)
+ return(-EINVAL);
+
+ if (flags & MSG_OOB)
+ return -EOPNOTSUPP;
+
+ if (flags & MSG_WAITALL)
+ target = size;
+
+ msg->msg_namelen = 0;
+
+ do {
+ int chunk;
+ struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue);
+
+ if (skb==NULL) {
+ int ret = 0;
+
+ if (copied >= target)
+ break;
+
+ /* The following code is a cut'n'paste of the
+ * wait_event_interruptible() macro.
+ * We don't us the macro because the test condition
+ * is messy. - Jean II */
+ set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+ add_wait_queue(sk->sk_sleep, &waitq);
+ set_current_state(TASK_INTERRUPTIBLE);
+
+ /*
+ * POSIX 1003.1g mandates this order.
+ */
+ if (sk->sk_err)
+ ret = sock_error(sk);
+ else if (sk->sk_shutdown & RCV_SHUTDOWN)
+ ;
+ else if (noblock)
+ ret = -EAGAIN;
+ else if (signal_pending(current))
+ ret = -ERESTARTSYS;
+ else if (skb_peek(&sk->sk_receive_queue) == NULL)
+ /* Wait process until data arrives */
+ schedule();
+
+ current->state = TASK_RUNNING;
+ remove_wait_queue(sk->sk_sleep, &waitq);
+ clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags);
+
+ if(ret)
+ return(ret);
+ if (sk->sk_shutdown & RCV_SHUTDOWN)
+ break;
+
+ continue;
+ }
+
+ chunk = min_t(unsigned int, skb->len, size);
+ if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) {
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ if (copied == 0)
+ copied = -EFAULT;
+ break;
+ }
+ copied += chunk;
+ size -= chunk;
+
+ /* Mark read part of skb as used */
+ if (!(flags & MSG_PEEK)) {
+ skb_pull(skb, chunk);
+
+ /* put the skb back if we didn't use it up.. */
+ if (skb->len) {
+ IRDA_DEBUG(1, "%s(), back on q!\n",
+ __FUNCTION__);
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ break;
+ }
+
+ kfree_skb(skb);
+ } else {
+ IRDA_DEBUG(0, "%s() questionable!?\n", __FUNCTION__);
+
+ /* put message back and return */
+ skb_queue_head(&sk->sk_receive_queue, skb);
+ break;
+ }
+ } while (size);
+
+ /*
+ * Check if we have previously stopped IrTTP and we know
+ * have more free space in our rx_queue. If so tell IrTTP
+ * to start delivering frames again before our rx_queue gets
+ * empty
+ */
+ if (self->rx_flow == FLOW_STOP) {
+ if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) {
+ IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __FUNCTION__);
+ self->rx_flow = FLOW_START;
+ irttp_flow_request(self->tsap, FLOW_START);
+ }
+ }
+
+ return copied;
+}
+
+/*
+ * Function irda_sendmsg_dgram (iocb, sock, msg, len)
+ *
+ * Send message down to TinyTP for the unreliable sequenced
+ * packet service...
+ *
+ */
+static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self;
+ struct sk_buff *skb;
+ unsigned char *asmptr;
+ int err;
+
+ IRDA_DEBUG(4, "%s(), len=%zd\n", __FUNCTION__, len);
+
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
+ return -EINVAL;
+
+ if (sk->sk_shutdown & SEND_SHUTDOWN) {
+ send_sig(SIGPIPE, current, 0);
+ return -EPIPE;
+ }
+
+ if (sk->sk_state != TCP_ESTABLISHED)
+ return -ENOTCONN;
+
+ self = irda_sk(sk);
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ /*
+ * Check that we don't send out to big frames. This is an unreliable
+ * service, so we have no fragmentation and no coalescence
+ */
+ if (len > self->max_data_size) {
+ IRDA_DEBUG(0, "%s(), Warning to much data! "
+ "Chopping frame from %zd to %d bytes!\n",
+ __FUNCTION__, len, self->max_data_size);
+ len = self->max_data_size;
+ }
+
+ skb = sock_alloc_send_skb(sk, len + self->max_header_size,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return -ENOBUFS;
+
+ skb_reserve(skb, self->max_header_size);
+
+ IRDA_DEBUG(4, "%s(), appending user data\n", __FUNCTION__);
+ asmptr = skb->h.raw = skb_put(skb, len);
+ err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
+ if (err) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ /*
+ * Just send the message to TinyTP, and let it deal with possible
+ * errors. No need to duplicate all that here
+ */
+ err = irttp_udata_request(self->tsap, skb);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), err=%d\n", __FUNCTION__, err);
+ return err;
+ }
+ return len;
+}
+
+/*
+ * Function irda_sendmsg_ultra (iocb, sock, msg, len)
+ *
+ * Send message down to IrLMP for the unreliable Ultra
+ * packet service...
+ */
+#ifdef CONFIG_IRDA_ULTRA
+static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock,
+ struct msghdr *msg, size_t len)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self;
+ __u8 pid = 0;
+ int bound = 0;
+ struct sk_buff *skb;
+ unsigned char *asmptr;
+ int err;
+
+ IRDA_DEBUG(4, "%s(), len=%zd\n", __FUNCTION__, len);
+
+ if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT))
+ return -EINVAL;
+
+ if (sk->sk_shutdown & SEND_SHUTDOWN) {
+ send_sig(SIGPIPE, current, 0);
+ return -EPIPE;
+ }
+
+ self = irda_sk(sk);
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ /* Check if an address was specified with sendto. Jean II */
+ if (msg->msg_name) {
+ struct sockaddr_irda *addr = (struct sockaddr_irda *) msg->msg_name;
+ /* Check address, extract pid. Jean II */
+ if (msg->msg_namelen < sizeof(*addr))
+ return -EINVAL;
+ if (addr->sir_family != AF_IRDA)
+ return -EINVAL;
+
+ pid = addr->sir_lsap_sel;
+ if (pid & 0x80) {
+ IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __FUNCTION__);
+ return -EOPNOTSUPP;
+ }
+ } else {
+ /* Check that the socket is properly bound to an Ultra
+ * port. Jean II */
+ if ((self->lsap == NULL) ||
+ (sk->sk_state != TCP_ESTABLISHED)) {
+ IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n",
+ __FUNCTION__);
+ return -ENOTCONN;
+ }
+ /* Use PID from socket */
+ bound = 1;
+ }
+
+ /*
+ * Check that we don't send out to big frames. This is an unreliable
+ * service, so we have no fragmentation and no coalescence
+ */
+ if (len > self->max_data_size) {
+ IRDA_DEBUG(0, "%s(), Warning to much data! "
+ "Chopping frame from %zd to %d bytes!\n",
+ __FUNCTION__, len, self->max_data_size);
+ len = self->max_data_size;
+ }
+
+ skb = sock_alloc_send_skb(sk, len + self->max_header_size,
+ msg->msg_flags & MSG_DONTWAIT, &err);
+ if (!skb)
+ return -ENOBUFS;
+
+ skb_reserve(skb, self->max_header_size);
+
+ IRDA_DEBUG(4, "%s(), appending user data\n", __FUNCTION__);
+ asmptr = skb->h.raw = skb_put(skb, len);
+ err = memcpy_fromiovec(asmptr, msg->msg_iov, len);
+ if (err) {
+ kfree_skb(skb);
+ return err;
+ }
+
+ err = irlmp_connless_data_request((bound ? self->lsap : NULL),
+ skb, pid);
+ if (err) {
+ IRDA_DEBUG(0, "%s(), err=%d\n", __FUNCTION__, err);
+ return err;
+ }
+ return len;
+}
+#endif /* CONFIG_IRDA_ULTRA */
+
+/*
+ * Function irda_shutdown (sk, how)
+ */
+static int irda_shutdown(struct socket *sock, int how)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ IRDA_DEBUG(1, "%s(%p)\n", __FUNCTION__, self);
+
+ sk->sk_state = TCP_CLOSE;
+ sk->sk_shutdown |= SEND_SHUTDOWN;
+ sk->sk_state_change(sk);
+
+ if (self->iriap) {
+ iriap_close(self->iriap);
+ self->iriap = NULL;
+ }
+
+ if (self->tsap) {
+ irttp_disconnect_request(self->tsap, NULL, P_NORMAL);
+ irttp_close_tsap(self->tsap);
+ self->tsap = NULL;
+ }
+
+ /* A few cleanup so the socket look as good as new... */
+ self->rx_flow = self->tx_flow = FLOW_START; /* needed ??? */
+ self->daddr = DEV_ADDR_ANY; /* Until we get re-connected */
+ self->saddr = 0x0; /* so IrLMP assign us any link */
+
+ return 0;
+}
+
+/*
+ * Function irda_poll (file, sock, wait)
+ */
+static unsigned int irda_poll(struct file * file, struct socket *sock,
+ poll_table *wait)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+ unsigned int mask;
+
+ IRDA_DEBUG(4, "%s()\n", __FUNCTION__);
+
+ poll_wait(file, sk->sk_sleep, wait);
+ mask = 0;
+
+ /* Exceptional events? */
+ if (sk->sk_err)
+ mask |= POLLERR;
+ if (sk->sk_shutdown & RCV_SHUTDOWN) {
+ IRDA_DEBUG(0, "%s(), POLLHUP\n", __FUNCTION__);
+ mask |= POLLHUP;
+ }
+
+ /* Readable? */
+ if (!skb_queue_empty(&sk->sk_receive_queue)) {
+ IRDA_DEBUG(4, "Socket is readable\n");
+ mask |= POLLIN | POLLRDNORM;
+ }
+
+ /* Connection-based need to check for termination and startup */
+ switch (sk->sk_type) {
+ case SOCK_STREAM:
+ if (sk->sk_state == TCP_CLOSE) {
+ IRDA_DEBUG(0, "%s(), POLLHUP\n", __FUNCTION__);
+ mask |= POLLHUP;
+ }
+
+ if (sk->sk_state == TCP_ESTABLISHED) {
+ if ((self->tx_flow == FLOW_START) &&
+ sock_writeable(sk))
+ {
+ mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+ }
+ }
+ break;
+ case SOCK_SEQPACKET:
+ if ((self->tx_flow == FLOW_START) &&
+ sock_writeable(sk))
+ {
+ mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+ }
+ break;
+ case SOCK_DGRAM:
+ if (sock_writeable(sk))
+ mask |= POLLOUT | POLLWRNORM | POLLWRBAND;
+ break;
+ default:
+ break;
+ }
+ return mask;
+}
+
+/*
+ * Function irda_ioctl (sock, cmd, arg)
+ */
+static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
+{
+ struct sock *sk = sock->sk;
+
+ IRDA_DEBUG(4, "%s(), cmd=%#x\n", __FUNCTION__, cmd);
+
+ switch (cmd) {
+ case TIOCOUTQ: {
+ long amount;
+ amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
+ if (amount < 0)
+ amount = 0;
+ if (put_user(amount, (unsigned int __user *)arg))
+ return -EFAULT;
+ return 0;
+ }
+
+ case TIOCINQ: {
+ struct sk_buff *skb;
+ long amount = 0L;
+ /* These two are safe on a single CPU system as only user tasks fiddle here */
+ if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
+ amount = skb->len;
+ if (put_user(amount, (unsigned int __user *)arg))
+ return -EFAULT;
+ return 0;
+ }
+
+ case SIOCGSTAMP:
+ if (sk != NULL)
+ return sock_get_timestamp(sk, (struct timeval __user *)arg);
+ return -EINVAL;
+
+ case SIOCGIFADDR:
+ case SIOCSIFADDR:
+ case SIOCGIFDSTADDR:
+ case SIOCSIFDSTADDR:
+ case SIOCGIFBRDADDR:
+ case SIOCSIFBRDADDR:
+ case SIOCGIFNETMASK:
+ case SIOCSIFNETMASK:
+ case SIOCGIFMETRIC:
+ case SIOCSIFMETRIC:
+ return -EINVAL;
+ default:
+ IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __FUNCTION__);
+ return dev_ioctl(cmd, (void __user *) arg);
+ }
+
+ /*NOTREACHED*/
+ return 0;
+}
+
+/*
+ * Function irda_setsockopt (sock, level, optname, optval, optlen)
+ *
+ * Set some options for the socket
+ *
+ */
+static int irda_setsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int optlen)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+ struct irda_ias_set *ias_opt;
+ struct ias_object *ias_obj;
+ struct ias_attrib * ias_attr; /* Attribute in IAS object */
+ int opt;
+
+ IRDA_ASSERT(self != NULL, return -1;);
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ if (level != SOL_IRLMP)
+ return -ENOPROTOOPT;
+
+ switch (optname) {
+ case IRLMP_IAS_SET:
+ /* The user want to add an attribute to an existing IAS object
+ * (in the IAS database) or to create a new object with this
+ * attribute.
+ * We first query IAS to know if the object exist, and then
+ * create the right attribute...
+ */
+
+ if (optlen != sizeof(struct irda_ias_set))
+ return -EINVAL;
+
+ ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
+ if (ias_opt == NULL)
+ return -ENOMEM;
+
+ /* Copy query to the driver. */
+ if (copy_from_user(ias_opt, optval, optlen)) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+
+ /* Find the object we target.
+ * If the user gives us an empty string, we use the object
+ * associated with this socket. This will workaround
+ * duplicated class name - Jean II */
+ if(ias_opt->irda_class_name[0] == '\0') {
+ if(self->ias_obj == NULL) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+ ias_obj = self->ias_obj;
+ } else
+ ias_obj = irias_find_object(ias_opt->irda_class_name);
+
+ /* Only ROOT can mess with the global IAS database.
+ * Users can only add attributes to the object associated
+ * with the socket they own - Jean II */
+ if((!capable(CAP_NET_ADMIN)) &&
+ ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
+ kfree(ias_opt);
+ return -EPERM;
+ }
+
+ /* If the object doesn't exist, create it */
+ if(ias_obj == (struct ias_object *) NULL) {
+ /* Create a new object */
+ ias_obj = irias_new_object(ias_opt->irda_class_name,
+ jiffies);
+ }
+
+ /* Do we have the attribute already ? */
+ if(irias_find_attrib(ias_obj, ias_opt->irda_attrib_name)) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+
+ /* Look at the type */
+ switch(ias_opt->irda_attrib_type) {
+ case IAS_INTEGER:
+ /* Add an integer attribute */
+ irias_add_integer_attrib(
+ ias_obj,
+ ias_opt->irda_attrib_name,
+ ias_opt->attribute.irda_attrib_int,
+ IAS_USER_ATTR);
+ break;
+ case IAS_OCT_SEQ:
+ /* Check length */
+ if(ias_opt->attribute.irda_attrib_octet_seq.len >
+ IAS_MAX_OCTET_STRING) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+ /* Add an octet sequence attribute */
+ irias_add_octseq_attrib(
+ ias_obj,
+ ias_opt->irda_attrib_name,
+ ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
+ ias_opt->attribute.irda_attrib_octet_seq.len,
+ IAS_USER_ATTR);
+ break;
+ case IAS_STRING:
+ /* Should check charset & co */
+ /* Check length */
+ /* The length is encoded in a __u8, and
+ * IAS_MAX_STRING == 256, so there is no way
+ * userspace can pass us a string too large.
+ * Jean II */
+ /* NULL terminate the string (avoid troubles) */
+ ias_opt->attribute.irda_attrib_string.string[ias_opt->attribute.irda_attrib_string.len] = '\0';
+ /* Add a string attribute */
+ irias_add_string_attrib(
+ ias_obj,
+ ias_opt->irda_attrib_name,
+ ias_opt->attribute.irda_attrib_string.string,
+ IAS_USER_ATTR);
+ break;
+ default :
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+ irias_insert_object(ias_obj);
+ kfree(ias_opt);
+ break;
+ case IRLMP_IAS_DEL:
+ /* The user want to delete an object from our local IAS
+ * database. We just need to query the IAS, check is the
+ * object is not owned by the kernel and delete it.
+ */
+
+ if (optlen != sizeof(struct irda_ias_set))
+ return -EINVAL;
+
+ ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
+ if (ias_opt == NULL)
+ return -ENOMEM;
+
+ /* Copy query to the driver. */
+ if (copy_from_user(ias_opt, optval, optlen)) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+
+ /* Find the object we target.
+ * If the user gives us an empty string, we use the object
+ * associated with this socket. This will workaround
+ * duplicated class name - Jean II */
+ if(ias_opt->irda_class_name[0] == '\0')
+ ias_obj = self->ias_obj;
+ else
+ ias_obj = irias_find_object(ias_opt->irda_class_name);
+ if(ias_obj == (struct ias_object *) NULL) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+
+ /* Only ROOT can mess with the global IAS database.
+ * Users can only del attributes from the object associated
+ * with the socket they own - Jean II */
+ if((!capable(CAP_NET_ADMIN)) &&
+ ((ias_obj == NULL) || (ias_obj != self->ias_obj))) {
+ kfree(ias_opt);
+ return -EPERM;
+ }
+
+ /* Find the attribute (in the object) we target */
+ ias_attr = irias_find_attrib(ias_obj,
+ ias_opt->irda_attrib_name);
+ if(ias_attr == (struct ias_attrib *) NULL) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+
+ /* Check is the user space own the object */
+ if(ias_attr->value->owner != IAS_USER_ATTR) {
+ IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __FUNCTION__);
+ kfree(ias_opt);
+ return -EPERM;
+ }
+
+ /* Remove the attribute (and maybe the object) */
+ irias_delete_attrib(ias_obj, ias_attr, 1);
+ kfree(ias_opt);
+ break;
+ case IRLMP_MAX_SDU_SIZE:
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ if (get_user(opt, (int __user *)optval))
+ return -EFAULT;
+
+ /* Only possible for a seqpacket service (TTP with SAR) */
+ if (sk->sk_type != SOCK_SEQPACKET) {
+ IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n",
+ __FUNCTION__, opt);
+ self->max_sdu_size_rx = opt;
+ } else {
+ IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n",
+ __FUNCTION__);
+ return -ENOPROTOOPT;
+ }
+ break;
+ case IRLMP_HINTS_SET:
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ /* The input is really a (__u8 hints[2]), easier as an int */
+ if (get_user(opt, (int __user *)optval))
+ return -EFAULT;
+
+ /* Unregister any old registration */
+ if (self->skey)
+ irlmp_unregister_service(self->skey);
+
+ self->skey = irlmp_register_service((__u16) opt);
+ break;
+ case IRLMP_HINT_MASK_SET:
+ /* As opposed to the previous case which set the hint bits
+ * that we advertise, this one set the filter we use when
+ * making a discovery (nodes which don't match any hint
+ * bit in the mask are not reported).
+ */
+ if (optlen < sizeof(int))
+ return -EINVAL;
+
+ /* The input is really a (__u8 hints[2]), easier as an int */
+ if (get_user(opt, (int __user *)optval))
+ return -EFAULT;
+
+ /* Set the new hint mask */
+ self->mask.word = (__u16) opt;
+ /* Mask out extension bits */
+ self->mask.word &= 0x7f7f;
+ /* Check if no bits */
+ if(!self->mask.word)
+ self->mask.word = 0xFFFF;
+
+ break;
+ default:
+ return -ENOPROTOOPT;
+ }
+ return 0;
+}
+
+/*
+ * Function irda_extract_ias_value(ias_opt, ias_value)
+ *
+ * Translate internal IAS value structure to the user space representation
+ *
+ * The external representation of IAS values, as we exchange them with
+ * user space program is quite different from the internal representation,
+ * as stored in the IAS database (because we need a flat structure for
+ * crossing kernel boundary).
+ * This function transform the former in the latter. We also check
+ * that the value type is valid.
+ */
+static int irda_extract_ias_value(struct irda_ias_set *ias_opt,
+ struct ias_value *ias_value)
+{
+ /* Look at the type */
+ switch (ias_value->type) {
+ case IAS_INTEGER:
+ /* Copy the integer */
+ ias_opt->attribute.irda_attrib_int = ias_value->t.integer;
+ break;
+ case IAS_OCT_SEQ:
+ /* Set length */
+ ias_opt->attribute.irda_attrib_octet_seq.len = ias_value->len;
+ /* Copy over */
+ memcpy(ias_opt->attribute.irda_attrib_octet_seq.octet_seq,
+ ias_value->t.oct_seq, ias_value->len);
+ break;
+ case IAS_STRING:
+ /* Set length */
+ ias_opt->attribute.irda_attrib_string.len = ias_value->len;
+ ias_opt->attribute.irda_attrib_string.charset = ias_value->charset;
+ /* Copy over */
+ memcpy(ias_opt->attribute.irda_attrib_string.string,
+ ias_value->t.string, ias_value->len);
+ /* NULL terminate the string (avoid troubles) */
+ ias_opt->attribute.irda_attrib_string.string[ias_value->len] = '\0';
+ break;
+ case IAS_MISSING:
+ default :
+ return -EINVAL;
+ }
+
+ /* Copy type over */
+ ias_opt->irda_attrib_type = ias_value->type;
+
+ return 0;
+}
+
+/*
+ * Function irda_getsockopt (sock, level, optname, optval, optlen)
+ */
+static int irda_getsockopt(struct socket *sock, int level, int optname,
+ char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct irda_sock *self = irda_sk(sk);
+ struct irda_device_list list;
+ struct irda_device_info *discoveries;
+ struct irda_ias_set * ias_opt; /* IAS get/query params */
+ struct ias_object * ias_obj; /* Object in IAS */
+ struct ias_attrib * ias_attr; /* Attribute in IAS object */
+ int daddr = DEV_ADDR_ANY; /* Dest address for IAS queries */
+ int val = 0;
+ int len = 0;
+ int err;
+ int offset, total;
+
+ IRDA_DEBUG(2, "%s(%p)\n", __FUNCTION__, self);
+
+ if (level != SOL_IRLMP)
+ return -ENOPROTOOPT;
+
+ if (get_user(len, optlen))
+ return -EFAULT;
+
+ if(len < 0)
+ return -EINVAL;
+
+ switch (optname) {
+ case IRLMP_ENUMDEVICES:
+ /* Ask lmp for the current discovery log */
+ discoveries = irlmp_get_discoveries(&list.len, self->mask.word,
+ self->nslots);
+ /* Check if the we got some results */
+ if (discoveries == NULL)
+ return -EAGAIN; /* Didn't find any devices */
+ err = 0;
+
+ /* Write total list length back to client */
+ if (copy_to_user(optval, &list,
+ sizeof(struct irda_device_list) -
+ sizeof(struct irda_device_info)))
+ err = -EFAULT;
+
+ /* Offset to first device entry */
+ offset = sizeof(struct irda_device_list) -
+ sizeof(struct irda_device_info);
+
+ /* Copy the list itself - watch for overflow */
+ if(list.len > 2048)
+ {
+ err = -EINVAL;
+ goto bed;
+ }
+ total = offset + (list.len * sizeof(struct irda_device_info));
+ if (total > len)
+ total = len;
+ if (copy_to_user(optval+offset, discoveries, total - offset))
+ err = -EFAULT;
+
+ /* Write total number of bytes used back to client */
+ if (put_user(total, optlen))
+ err = -EFAULT;
+bed:
+ /* Free up our buffer */
+ kfree(discoveries);
+ if (err)
+ return err;
+ break;
+ case IRLMP_MAX_SDU_SIZE:
+ val = self->max_data_size;
+ len = sizeof(int);
+ if (put_user(len, optlen))
+ return -EFAULT;
+
+ if (copy_to_user(optval, &val, len))
+ return -EFAULT;
+ break;
+ case IRLMP_IAS_GET:
+ /* The user want an object from our local IAS database.
+ * We just need to query the IAS and return the value
+ * that we found */
+
+ /* Check that the user has allocated the right space for us */
+ if (len != sizeof(struct irda_ias_set))
+ return -EINVAL;
+
+ ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
+ if (ias_opt == NULL)
+ return -ENOMEM;
+
+ /* Copy query to the driver. */
+ if (copy_from_user(ias_opt, optval, len)) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+
+ /* Find the object we target.
+ * If the user gives us an empty string, we use the object
+ * associated with this socket. This will workaround
+ * duplicated class name - Jean II */
+ if(ias_opt->irda_class_name[0] == '\0')
+ ias_obj = self->ias_obj;
+ else
+ ias_obj = irias_find_object(ias_opt->irda_class_name);
+ if(ias_obj == (struct ias_object *) NULL) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+
+ /* Find the attribute (in the object) we target */
+ ias_attr = irias_find_attrib(ias_obj,
+ ias_opt->irda_attrib_name);
+ if(ias_attr == (struct ias_attrib *) NULL) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+
+ /* Translate from internal to user structure */
+ err = irda_extract_ias_value(ias_opt, ias_attr->value);
+ if(err) {
+ kfree(ias_opt);
+ return err;
+ }
+
+ /* Copy reply to the user */
+ if (copy_to_user(optval, ias_opt,
+ sizeof(struct irda_ias_set))) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+ /* Note : don't need to put optlen, we checked it */
+ kfree(ias_opt);
+ break;
+ case IRLMP_IAS_QUERY:
+ /* The user want an object from a remote IAS database.
+ * We need to use IAP to query the remote database and
+ * then wait for the answer to come back. */
+
+ /* Check that the user has allocated the right space for us */
+ if (len != sizeof(struct irda_ias_set))
+ return -EINVAL;
+
+ ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC);
+ if (ias_opt == NULL)
+ return -ENOMEM;
+
+ /* Copy query to the driver. */
+ if (copy_from_user(ias_opt, optval, len)) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+
+ /* At this point, there are two cases...
+ * 1) the socket is connected - that's the easy case, we
+ * just query the device we are connected to...
+ * 2) the socket is not connected - the user doesn't want
+ * to connect and/or may not have a valid service name
+ * (so can't create a fake connection). In this case,
+ * we assume that the user pass us a valid destination
+ * address in the requesting structure...
+ */
+ if(self->daddr != DEV_ADDR_ANY) {
+ /* We are connected - reuse known daddr */
+ daddr = self->daddr;
+ } else {
+ /* We are not connected, we must specify a valid
+ * destination address */
+ daddr = ias_opt->daddr;
+ if((!daddr) || (daddr == DEV_ADDR_ANY)) {
+ kfree(ias_opt);
+ return -EINVAL;
+ }
+ }
+
+ /* Check that we can proceed with IAP */
+ if (self->iriap) {
+ IRDA_WARNING("%s: busy with a previous query\n",
+ __FUNCTION__);
+ kfree(ias_opt);
+ return -EBUSY;
+ }
+
+ self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self,
+ irda_getvalue_confirm);
+
+ if (self->iriap == NULL) {
+ kfree(ias_opt);
+ return -ENOMEM;
+ }
+
+ /* Treat unexpected wakeup as disconnect */
+ self->errno = -EHOSTUNREACH;
+
+ /* Query remote LM-IAS */
+ iriap_getvaluebyclass_request(self->iriap,
+ self->saddr, daddr,
+ ias_opt->irda_class_name,
+ ias_opt->irda_attrib_name);
+
+ /* Wait for answer, if not yet finished (or failed) */
+ if (wait_event_interruptible(self->query_wait,
+ (self->iriap == NULL))) {
+ /* pending request uses copy of ias_opt-content
+ * we can free it regardless! */
+ kfree(ias_opt);
+ /* Treat signals as disconnect */
+ return -EHOSTUNREACH;
+ }
+
+ /* Check what happened */
+ if (self->errno)
+ {
+ kfree(ias_opt);
+ /* Requested object/attribute doesn't exist */
+ if((self->errno == IAS_CLASS_UNKNOWN) ||
+ (self->errno == IAS_ATTRIB_UNKNOWN))
+ return (-EADDRNOTAVAIL);
+ else
+ return (-EHOSTUNREACH);
+ }
+
+ /* Translate from internal to user structure */
+ err = irda_extract_ias_value(ias_opt, self->ias_result);
+ if (self->ias_result)
+ irias_delete_value(self->ias_result);
+ if (err) {
+ kfree(ias_opt);
+ return err;
+ }
+
+ /* Copy reply to the user */
+ if (copy_to_user(optval, ias_opt,
+ sizeof(struct irda_ias_set))) {
+ kfree(ias_opt);
+ return -EFAULT;
+ }
+ /* Note : don't need to put optlen, we checked it */
+ kfree(ias_opt);
+ break;
+ case IRLMP_WAITDEVICE:
+ /* This function is just another way of seeing life ;-)
+ * IRLMP_ENUMDEVICES assumes that you have a static network,
+ * and that you just want to pick one of the devices present.
+ * On the other hand, in here we assume that no device is
+ * present and that at some point in the future a device will
+ * come into range. When this device arrive, we just wake
+ * up the caller, so that he has time to connect to it before
+ * the device goes away...
+ * Note : once the node has been discovered for more than a
+ * few second, it won't trigger this function, unless it
+ * goes away and come back changes its hint bits (so we
+ * might call it IRLMP_WAITNEWDEVICE).
+ */
+
+ /* Check that the user is passing us an int */
+ if (len != sizeof(int))
+ return -EINVAL;
+ /* Get timeout in ms (max time we block the caller) */
+ if (get_user(val, (int __user *)optval))
+ return -EFAULT;
+
+ /* Tell IrLMP we want to be notified */
+ irlmp_update_client(self->ckey, self->mask.word,
+ irda_selective_discovery_indication,
+ NULL, (void *) self);
+
+ /* Do some discovery (and also return cached results) */
+ irlmp_discovery_request(self->nslots);
+
+ /* Wait until a node is discovered */
+ if (!self->cachedaddr) {
+ int ret = 0;
+
+ IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __FUNCTION__);
+
+ /* Set watchdog timer to expire in <val> ms. */
+ self->errno = 0;
+ init_timer(&self->watchdog);
+ self->watchdog.function = irda_discovery_timeout;
+ self->watchdog.data = (unsigned long) self;
+ self->watchdog.expires = jiffies + (val * HZ/1000);
+ add_timer(&(self->watchdog));
+
+ /* Wait for IR-LMP to call us back */
+ __wait_event_interruptible(self->query_wait,
+ (self->cachedaddr != 0 || self->errno == -ETIME),
+ ret);
+
+ /* If watchdog is still activated, kill it! */
+ if(timer_pending(&(self->watchdog)))
+ del_timer(&(self->watchdog));
+
+ IRDA_DEBUG(1, "%s(), ...waking up !\n", __FUNCTION__);
+
+ if (ret != 0)
+ return ret;
+ }
+ else
+ IRDA_DEBUG(1, "%s(), found immediately !\n",
+ __FUNCTION__);
+
+ /* Tell IrLMP that we have been notified */
+ irlmp_update_client(self->ckey, self->mask.word,
+ NULL, NULL, NULL);
+
+ /* Check if the we got some results */
+ if (!self->cachedaddr)
+ return -EAGAIN; /* Didn't find any devices */
+ daddr = self->cachedaddr;
+ /* Cleanup */
+ self->cachedaddr = 0;
+
+ /* We return the daddr of the device that trigger the
+ * wakeup. As irlmp pass us only the new devices, we
+ * are sure that it's not an old device.
+ * If the user want more details, he should query
+ * the whole discovery log and pick one device...
+ */
+ if (put_user(daddr, (int __user *)optval))
+ return -EFAULT;
+
+ break;
+ default:
+ return -ENOPROTOOPT;
+ }
+
+ return 0;
+}
+
+static struct net_proto_family irda_family_ops = {
+ .family = PF_IRDA,
+ .create = irda_create,
+ .owner = THIS_MODULE,
+};
+
+static struct proto_ops SOCKOPS_WRAPPED(irda_stream_ops) = {
+ .family = PF_IRDA,
+ .owner = THIS_MODULE,
+ .release = irda_release,
+ .bind = irda_bind,
+ .connect = irda_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = irda_accept,
+ .getname = irda_getname,
+ .poll = irda_poll,
+ .ioctl = irda_ioctl,
+ .listen = irda_listen,
+ .shutdown = irda_shutdown,
+ .setsockopt = irda_setsockopt,
+ .getsockopt = irda_getsockopt,
+ .sendmsg = irda_sendmsg,
+ .recvmsg = irda_recvmsg_stream,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+static struct proto_ops SOCKOPS_WRAPPED(irda_seqpacket_ops) = {
+ .family = PF_IRDA,
+ .owner = THIS_MODULE,
+ .release = irda_release,
+ .bind = irda_bind,
+ .connect = irda_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = irda_accept,
+ .getname = irda_getname,
+ .poll = datagram_poll,
+ .ioctl = irda_ioctl,
+ .listen = irda_listen,
+ .shutdown = irda_shutdown,
+ .setsockopt = irda_setsockopt,
+ .getsockopt = irda_getsockopt,
+ .sendmsg = irda_sendmsg,
+ .recvmsg = irda_recvmsg_dgram,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+static struct proto_ops SOCKOPS_WRAPPED(irda_dgram_ops) = {
+ .family = PF_IRDA,
+ .owner = THIS_MODULE,
+ .release = irda_release,
+ .bind = irda_bind,
+ .connect = irda_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = irda_accept,
+ .getname = irda_getname,
+ .poll = datagram_poll,
+ .ioctl = irda_ioctl,
+ .listen = irda_listen,
+ .shutdown = irda_shutdown,
+ .setsockopt = irda_setsockopt,
+ .getsockopt = irda_getsockopt,
+ .sendmsg = irda_sendmsg_dgram,
+ .recvmsg = irda_recvmsg_dgram,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+
+#ifdef CONFIG_IRDA_ULTRA
+static struct proto_ops SOCKOPS_WRAPPED(irda_ultra_ops) = {
+ .family = PF_IRDA,
+ .owner = THIS_MODULE,
+ .release = irda_release,
+ .bind = irda_bind,
+ .connect = sock_no_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = sock_no_accept,
+ .getname = irda_getname,
+ .poll = datagram_poll,
+ .ioctl = irda_ioctl,
+ .listen = sock_no_listen,
+ .shutdown = irda_shutdown,
+ .setsockopt = irda_setsockopt,
+ .getsockopt = irda_getsockopt,
+ .sendmsg = irda_sendmsg_ultra,
+ .recvmsg = irda_recvmsg_dgram,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
+};
+#endif /* CONFIG_IRDA_ULTRA */
+
+#include <linux/smp_lock.h>
+SOCKOPS_WRAP(irda_stream, PF_IRDA);
+SOCKOPS_WRAP(irda_seqpacket, PF_IRDA);
+SOCKOPS_WRAP(irda_dgram, PF_IRDA);
+#ifdef CONFIG_IRDA_ULTRA
+SOCKOPS_WRAP(irda_ultra, PF_IRDA);
+#endif /* CONFIG_IRDA_ULTRA */
+
+/*
+ * Function irsock_init (pro)
+ *
+ * Initialize IrDA protocol
+ *
+ */
+int __init irsock_init(void)
+{
+ int rc = proto_register(&irda_proto, 0);
+
+ if (rc == 0)
+ rc = sock_register(&irda_family_ops);
+
+ return rc;
+}
+
+/*
+ * Function irsock_cleanup (void)
+ *
+ * Remove IrDA protocol
+ *
+ */
+void __exit irsock_cleanup(void)
+{
+ sock_unregister(PF_IRDA);
+ proto_unregister(&irda_proto);
+}
