diff options
| author | Marcel Holtmann <marcel@holtmann.org> | 2009-01-16 12:06:13 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2009-02-27 08:14:33 +0300 |
| commit | 0588d94fd7e414367a7ae517569d2222441c255f (patch) | |
| tree | c8563ce159bbea94e57df39a9b27bb1628ebccdd /net/bluetooth | |
| parent | f62e4323ab43c59e7cd7f72c1eb392d7c767ce5a (diff) | |
| download | linux-0588d94fd7e414367a7ae517569d2222441c255f.tar.xz | |
Bluetooth: Restrict application of socket options
The new socket options should only be evaluated for SOL_BLUETOOTH level
and not for every other level. Previously this causes some minor issues
when detecting if a kernel with certain features is available.
Also restrict BT_SECURITY to SOCK_SEQPACKET for L2CAP and SOCK_STREAM for
the RFCOMM protocol.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'net/bluetooth')
| -rw-r--r-- | net/bluetooth/l2cap.c | 16 | ||||
| -rw-r--r-- | net/bluetooth/rfcomm/sock.c | 16 |
2 files changed, 32 insertions, 0 deletions
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index b2d279c245cf..82a9e692baed 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -1248,10 +1248,18 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, ch 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 (sk->sk_type != SOCK_SEQPACKET) { + err = -EINVAL; + break; + } + sec.level = BT_SECURITY_LOW; len = min_t(unsigned int, sizeof(sec), optlen); @@ -1384,6 +1392,9 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, ch 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; @@ -1391,6 +1402,11 @@ static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, ch switch (optname) { case BT_SECURITY: + if (sk->sk_type != SOCK_SEQPACKET) { + err = -EINVAL; + break; + } + sec.level = l2cap_pi(sk)->sec_level; len = min_t(unsigned int, len, sizeof(sec)); diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index 9986ef35c890..7f482784e9f7 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -778,10 +778,18 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c 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); @@ -899,6 +907,9 @@ static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, c 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; @@ -906,6 +917,11 @@ static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, c 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)); |