lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:   Thu, 10 Sep 2020 14:04:02 +0800
From:   Joseph Hwang <>
        Joseph Hwang <>,
        Alain Michaud <>,
        Abhishek Pandit-Subedi <>,
        "David S. Miller" <>,
        Jakub Kicinski <>,
        Johan Hedberg <>,,
Subject: [PATCH v3 2/2] Bluetooth: sco: new getsockopt options BT_SNDMTU/BT_RCVMTU

This patch defines new getsockopt options BT_SNDMTU/BT_RCVMTU
for SCO socket to be compatible with other bluetooth sockets.
These new options return the same value as option SCO_OPTIONS
which is already present on existing kernels.

Reviewed-by: Alain Michaud <>
Reviewed-by: Abhishek Pandit-Subedi <>
Signed-off-by: Joseph Hwang <>

Changes in v3:
- Fixed the commit message.

Changes in v2:
- Used BT_SNDMTU/BT_RCVMTU instead of creating a new opt name.
- Used the existing conn->mtu instead of creating a new member
  in struct sco_pinfo.
- Noted that the old SCO_OPTIONS in sco_sock_getsockopt_old()
  would just work as it uses sco_pi(sk)->conn->mtu.

 net/bluetooth/sco.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c
index dcf7f96ff417e6..79ffcdef0b7ad5 100644
--- a/net/bluetooth/sco.c
+++ b/net/bluetooth/sco.c
@@ -1001,6 +1001,12 @@ static int sco_sock_getsockopt(struct socket *sock, int level, int optname,
 			err = -EFAULT;
+	case BT_SNDMTU:
+	case BT_RCVMTU:
+		if (put_user(sco_pi(sk)->conn->mtu, (u32 __user *)optval))
+			err = -EFAULT;
+		break;
 		err = -ENOPROTOOPT;

Powered by blists - more mailing lists