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Diffstat (limited to 'net/bluetooth/rfcomm/sock.c')
-rw-r--r--net/bluetooth/rfcomm/sock.c189
1 files changed, 179 insertions, 10 deletions
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index d3fc6fca38d0..7f482784e9f7 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -261,12 +261,19 @@ static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
if (parent) {
sk->sk_type = parent->sk_type;
- pi->link_mode = rfcomm_pi(parent)->link_mode;
+ pi->dlc->defer_setup = bt_sk(parent)->defer_setup;
+
+ pi->sec_level = rfcomm_pi(parent)->sec_level;
+ pi->role_switch = rfcomm_pi(parent)->role_switch;
} else {
- pi->link_mode = 0;
+ pi->dlc->defer_setup = 0;
+
+ pi->sec_level = BT_SECURITY_LOW;
+ pi->role_switch = 0;
}
- pi->dlc->link_mode = pi->link_mode;
+ pi->dlc->sec_level = pi->sec_level;
+ pi->dlc->role_switch = pi->role_switch;
}
static struct proto rfcomm_proto = {
@@ -406,7 +413,8 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a
bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
rfcomm_pi(sk)->channel = sa->rc_channel;
- d->link_mode = rfcomm_pi(sk)->link_mode;
+ d->sec_level = rfcomm_pi(sk)->sec_level;
+ d->role_switch = rfcomm_pi(sk)->role_switch;
err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
if (!err)
@@ -554,6 +562,9 @@ static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
struct sk_buff *skb;
int sent = 0;
+ if (test_bit(RFCOMM_DEFER_SETUP, &d->flags))
+ return -ENOTCONN;
+
if (msg->msg_flags & MSG_OOB)
return -EOPNOTSUPP;
@@ -570,8 +581,11 @@ static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock,
skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE,
msg->msg_flags & MSG_DONTWAIT, &err);
- if (!skb)
+ if (!skb) {
+ if (sent == 0)
+ sent = err;
break;
+ }
skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE);
err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size);
@@ -630,10 +644,16 @@ static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
struct msghdr *msg, size_t size, int flags)
{
struct sock *sk = sock->sk;
+ struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc;
int err = 0;
size_t target, copied = 0;
long timeo;
+ if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) {
+ rfcomm_dlc_accept(d);
+ return 0;
+ }
+
if (flags & MSG_OOB)
return -EOPNOTSUPP;
@@ -710,7 +730,7 @@ out:
return copied ? : err;
}
-static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
+static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, int optlen)
{
struct sock *sk = sock->sk;
int err = 0;
@@ -727,7 +747,14 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
break;
}
- rfcomm_pi(sk)->link_mode = opt;
+ if (opt & RFCOMM_LM_AUTH)
+ rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
+ if (opt & RFCOMM_LM_ENCRYPT)
+ rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
+ if (opt & RFCOMM_LM_SECURE)
+ rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
+
+ rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
break;
default:
@@ -739,12 +766,76 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
return err;
}
-static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
+static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
+{
+ struct sock *sk = sock->sk;
+ struct bt_security sec;
+ int len, err = 0;
+ u32 opt;
+
+ BT_DBG("sk %p", sk);
+
+ if (level == SOL_RFCOMM)
+ return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen);
+
+ if (level != SOL_BLUETOOTH)
+ return -ENOPROTOOPT;
+
+ lock_sock(sk);
+
+ switch (optname) {
+ case BT_SECURITY:
+ if (sk->sk_type != SOCK_STREAM) {
+ 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_HIGH) {
+ err = -EINVAL;
+ break;
+ }
+
+ rfcomm_pi(sk)->sec_level = sec.level;
+ 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;
+ }
+
+ bt_sk(sk)->defer_setup = opt;
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
+static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct sock *l2cap_sk;
struct rfcomm_conninfo cinfo;
int len, err = 0;
+ u32 opt;
BT_DBG("sk %p", sk);
@@ -755,12 +846,32 @@ static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, c
switch (optname) {
case RFCOMM_LM:
- if (put_user(rfcomm_pi(sk)->link_mode, (u32 __user *) optval))
+ switch (rfcomm_pi(sk)->sec_level) {
+ case BT_SECURITY_LOW:
+ opt = RFCOMM_LM_AUTH;
+ break;
+ case BT_SECURITY_MEDIUM:
+ opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
+ break;
+ case BT_SECURITY_HIGH:
+ opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
+ RFCOMM_LM_SECURE;
+ break;
+ default:
+ opt = 0;
+ break;
+ }
+
+ if (rfcomm_pi(sk)->role_switch)
+ opt |= RFCOMM_LM_MASTER;
+
+ if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
break;
case RFCOMM_CONNINFO:
- if (sk->sk_state != BT_CONNECTED) {
+ if (sk->sk_state != BT_CONNECTED &&
+ !rfcomm_pi(sk)->dlc->defer_setup) {
err = -ENOTCONN;
break;
}
@@ -785,6 +896,60 @@ static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, c
return err;
}
+static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
+{
+ struct sock *sk = sock->sk;
+ struct bt_security sec;
+ int len, err = 0;
+
+ BT_DBG("sk %p", sk);
+
+ if (level == SOL_RFCOMM)
+ return rfcomm_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 (sk->sk_type != SOCK_STREAM) {
+ err = -EINVAL;
+ break;
+ }
+
+ sec.level = rfcomm_pi(sk)->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(bt_sk(sk)->defer_setup, (u32 __user *) optval))
+ err = -EFAULT;
+
+ break;
+
+ default:
+ err = -ENOPROTOOPT;
+ break;
+ }
+
+ release_sock(sk);
+ return err;
+}
+
static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk __maybe_unused = sock->sk;
@@ -888,6 +1053,10 @@ int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc *
done:
bh_unlock_sock(parent);
+
+ if (bt_sk(parent)->defer_setup)
+ parent->sk_state_change(parent);
+
return result;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 06:36:13 +0100