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| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:21:53 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:42 -0700 |
| commit | af5ae60e426a44003003177b176d60173e98dfa4 (patch) | |
| tree | 13880e1dcae0b0d5d68d3d2178c0066805cf56b2 /net/sctp | |
| parent | f87ddbc0c0fbe1f0ebd368b4047c0af0250667c9 (diff) | |
| download | linux-stable-af5ae60e426a44003003177b176d60173e98dfa4.tar.gz linux-stable-af5ae60e426a44003003177b176d60173e98dfa4.tar.bz2 linux-stable-af5ae60e426a44003003177b176d60173e98dfa4.zip | |
sctp: pass a kernel pointer to sctp_setsockopt_rtoinfo
Use the kernel pointer that sctp_setsockopt has available instead of
directly handling the user pointer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
| -rw-r--r-- | net/sctp/socket.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index f9fe93e865b9..6339a08b62dd 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -3041,9 +3041,10 @@ static int sctp_setsockopt_nodelay(struct sock *sk, int *val, * be changed. * */ -static int sctp_setsockopt_rtoinfo(struct sock *sk, char __user *optval, unsigned int optlen) +static int sctp_setsockopt_rtoinfo(struct sock *sk, + struct sctp_rtoinfo *rtoinfo, + unsigned int optlen) { - struct sctp_rtoinfo rtoinfo; struct sctp_association *asoc; unsigned long rto_min, rto_max; struct sctp_sock *sp = sctp_sk(sk); @@ -3051,18 +3052,15 @@ static int sctp_setsockopt_rtoinfo(struct sock *sk, char __user *optval, unsigne if (optlen != sizeof (struct sctp_rtoinfo)) return -EINVAL; - if (copy_from_user(&rtoinfo, optval, optlen)) - return -EFAULT; - - asoc = sctp_id2assoc(sk, rtoinfo.srto_assoc_id); + asoc = sctp_id2assoc(sk, rtoinfo->srto_assoc_id); /* Set the values to the specific association */ - if (!asoc && rtoinfo.srto_assoc_id != SCTP_FUTURE_ASSOC && + if (!asoc && rtoinfo->srto_assoc_id != SCTP_FUTURE_ASSOC && sctp_style(sk, UDP)) return -EINVAL; - rto_max = rtoinfo.srto_max; - rto_min = rtoinfo.srto_min; + rto_max = rtoinfo->srto_max; + rto_min = rtoinfo->srto_min; if (rto_max) rto_max = asoc ? msecs_to_jiffies(rto_max) : rto_max; @@ -3078,17 +3076,17 @@ static int sctp_setsockopt_rtoinfo(struct sock *sk, char __user *optval, unsigne return -EINVAL; if (asoc) { - if (rtoinfo.srto_initial != 0) + if (rtoinfo->srto_initial != 0) asoc->rto_initial = - msecs_to_jiffies(rtoinfo.srto_initial); + msecs_to_jiffies(rtoinfo->srto_initial); asoc->rto_max = rto_max; asoc->rto_min = rto_min; } else { /* If there is no association or the association-id = 0 * set the values to the endpoint. */ - if (rtoinfo.srto_initial != 0) - sp->rtoinfo.srto_initial = rtoinfo.srto_initial; + if (rtoinfo->srto_initial != 0) + sp->rtoinfo.srto_initial = rtoinfo->srto_initial; sp->rtoinfo.srto_max = rto_max; sp->rtoinfo.srto_min = rto_min; } @@ -4692,7 +4690,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_nodelay(sk, kopt, optlen); break; case SCTP_RTOINFO: - retval = sctp_setsockopt_rtoinfo(sk, optval, optlen); + retval = sctp_setsockopt_rtoinfo(sk, kopt, optlen); break; case SCTP_ASSOCINFO: retval = sctp_setsockopt_associnfo(sk, optval, optlen); |