From b7058842c940ad2c08dd829b21e5c92ebe3b8758 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Wed, 30 Sep 2009 16:12:20 -0700 Subject: net: Make setsockopt() optlen be unsigned. This provides safety against negative optlen at the type level instead of depending upon (sometimes non-trivial) checks against this sprinkled all over the the place, in each and every implementation. Based upon work done by Arjan van de Ven and feedback from Linus Torvalds. Signed-off-by: David S. Miller --- net/bluetooth/hci_sock.c | 2 +- net/bluetooth/l2cap.c | 4 ++-- net/bluetooth/rfcomm/sock.c | 4 ++-- net/bluetooth/sco.c | 2 +- 4 files changed, 6 insertions(+), 6 deletions(-) (limited to 'net/bluetooth') diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c index 4f9621f759a..75302a98606 100644 --- a/net/bluetooth/hci_sock.c +++ b/net/bluetooth/hci_sock.c @@ -466,7 +466,7 @@ drop: goto done; } -static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int len) +static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int len) { struct hci_ufilter uf = { .opcode = 0 }; struct sock *sk = sock->sk; diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c index b0301256464..555d9da1869 100644 --- a/net/bluetooth/l2cap.c +++ b/net/bluetooth/l2cap.c @@ -1698,7 +1698,7 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms return bt_sock_recvmsg(iocb, sock, msg, len, flags); } -static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, int optlen) +static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; struct l2cap_options opts; @@ -1755,7 +1755,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us return err; } -static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) +static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; struct bt_security sec; diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c index 0b85e811685..8a20aaf1f23 100644 --- a/net/bluetooth/rfcomm/sock.c +++ b/net/bluetooth/rfcomm/sock.c @@ -730,7 +730,7 @@ out: return copied ? : err; } -static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, int optlen) +static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; int err = 0; @@ -766,7 +766,7 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u return err; } -static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) +static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; struct bt_security sec; diff --git a/net/bluetooth/sco.c b/net/bluetooth/sco.c index 13c27f17192..77f4153bdb5 100644 --- a/net/bluetooth/sco.c +++ b/net/bluetooth/sco.c @@ -644,7 +644,7 @@ static int sco_sock_sendmsg(struct kiocb *iocb, struct socket *sock, return err; } -static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen) +static int sco_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) { struct sock *sk = sock->sk; int err = 0; -- cgit v1.2.3