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| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:21:39 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:41 -0700 |
| commit | 8c7517f54c8f24f3633383e8b552c1858fe95389 (patch) | |
| tree | 39b3a9fba699e41050ba9cb7e8d02314ce8e2859 /net | |
| parent | ca84bd058daefef1d184dd0a7b6b43c67339e72c (diff) | |
| download | linux-stable-8c7517f54c8f24f3633383e8b552c1858fe95389.tar.gz linux-stable-8c7517f54c8f24f3633383e8b552c1858fe95389.tar.bz2 linux-stable-8c7517f54c8f24f3633383e8b552c1858fe95389.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_bindx
Rename sctp_setsockopt_bindx_kernel back to sctp_setsockopt_bindx,
and use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer in the old sctp_setsockopt_bindx.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/socket.c | 33 |
1 files changed, 8 insertions, 25 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index af1ebc8313d3..85ba5155b177 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -979,9 +979,8 @@ int sctp_asconf_mgmt(struct sctp_sock *sp, struct sctp_sockaddr_entry *addrw) * * Returns 0 if ok, <0 errno code on error. */ -static int sctp_setsockopt_bindx_kernel(struct sock *sk, - struct sockaddr *addrs, int addrs_size, - int op) +static int sctp_setsockopt_bindx(struct sock *sk, struct sockaddr *addrs, + int addrs_size, int op) { int err; int addrcnt = 0; @@ -991,7 +990,7 @@ static int sctp_setsockopt_bindx_kernel(struct sock *sk, struct sctp_af *af; pr_debug("%s: sk:%p addrs:%p addrs_size:%d opt:%d\n", - __func__, sk, addrs, addrs_size, op); + __func__, sk, addr_buf, addrs_size, op); if (unlikely(addrs_size <= 0)) return -EINVAL; @@ -1037,29 +1036,13 @@ static int sctp_setsockopt_bindx_kernel(struct sock *sk, } } -static int sctp_setsockopt_bindx(struct sock *sk, - struct sockaddr __user *addrs, - int addrs_size, int op) -{ - struct sockaddr *kaddrs; - int err; - - kaddrs = memdup_user(addrs, addrs_size); - if (IS_ERR(kaddrs)) - return PTR_ERR(kaddrs); - err = sctp_setsockopt_bindx_kernel(sk, kaddrs, addrs_size, op); - kfree(kaddrs); - return err; -} - static int sctp_bind_add(struct sock *sk, struct sockaddr *addrs, int addrlen) { int err; lock_sock(sk); - err = sctp_setsockopt_bindx_kernel(sk, addrs, addrlen, - SCTP_BINDX_ADD_ADDR); + err = sctp_setsockopt_bindx(sk, addrs, addrlen, SCTP_BINDX_ADD_ADDR); release_sock(sk); return err; } @@ -4705,14 +4688,14 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, switch (optname) { case SCTP_SOCKOPT_BINDX_ADD: /* 'optlen' is the size of the addresses buffer. */ - retval = sctp_setsockopt_bindx(sk, (struct sockaddr __user *)optval, - optlen, SCTP_BINDX_ADD_ADDR); + retval = sctp_setsockopt_bindx(sk, kopt, optlen, + SCTP_BINDX_ADD_ADDR); break; case SCTP_SOCKOPT_BINDX_REM: /* 'optlen' is the size of the addresses buffer. */ - retval = sctp_setsockopt_bindx(sk, (struct sockaddr __user *)optval, - optlen, SCTP_BINDX_REM_ADDR); + retval = sctp_setsockopt_bindx(sk, kopt, optlen, + SCTP_BINDX_REM_ADDR); break; case SCTP_SOCKOPT_CONNECTX_OLD: |