diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-07-19 09:21:49 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-19 18:26:42 -0700 |
| commit | 8a2409d3566b3965347d73b4ca008eaa76f4bbfc (patch) | |
| tree | 14485883fddf05f274df549eb17bf50e3126029e /net/sctp | |
| parent | c23ad6d2b71cf2731e162143a6665d6491766c61 (diff) | |
sctp: pass a kernel pointer to sctp_setsockopt_default_sndinfo
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 | 49 |
1 files changed, 23 insertions, 26 deletions
diff --git a/net/sctp/socket.c b/net/sctp/socket.c index 9bcbb065cf9e..6695fa1cb0ca 100644 --- a/net/sctp/socket.c +++ b/net/sctp/socket.c @@ -2925,54 +2925,51 @@ static int sctp_setsockopt_default_send_param(struct sock *sk, * (SCTP_DEFAULT_SNDINFO) */ static int sctp_setsockopt_default_sndinfo(struct sock *sk, - char __user *optval, + struct sctp_sndinfo *info, unsigned int optlen) { struct sctp_sock *sp = sctp_sk(sk); struct sctp_association *asoc; - struct sctp_sndinfo info; - if (optlen != sizeof(info)) + if (optlen != sizeof(*info)) return -EINVAL; - if (copy_from_user(&info, optval, optlen)) - return -EFAULT; - if (info.snd_flags & + if (info->snd_flags & ~(SCTP_UNORDERED | SCTP_ADDR_OVER | SCTP_ABORT | SCTP_EOF)) return -EINVAL; - asoc = sctp_id2assoc(sk, info.snd_assoc_id); - if (!asoc && info.snd_assoc_id > SCTP_ALL_ASSOC && + asoc = sctp_id2assoc(sk, info->snd_assoc_id); + if (!asoc && info->snd_assoc_id > SCTP_ALL_ASSOC && sctp_style(sk, UDP)) return -EINVAL; if (asoc) { - asoc->default_stream = info.snd_sid; - asoc->default_flags = info.snd_flags; - asoc->default_ppid = info.snd_ppid; - asoc->default_context = info.snd_context; + asoc->default_stream = info->snd_sid; + asoc->default_flags = info->snd_flags; + asoc->default_ppid = info->snd_ppid; + asoc->default_context = info->snd_context; return 0; } if (sctp_style(sk, TCP)) - info.snd_assoc_id = SCTP_FUTURE_ASSOC; + info->snd_assoc_id = SCTP_FUTURE_ASSOC; - if (info.snd_assoc_id == SCTP_FUTURE_ASSOC || - info.snd_assoc_id == SCTP_ALL_ASSOC) { - sp->default_stream = info.snd_sid; - sp->default_flags = info.snd_flags; - sp->default_ppid = info.snd_ppid; - sp->default_context = info.snd_context; + if (info->snd_assoc_id == SCTP_FUTURE_ASSOC || + info->snd_assoc_id == SCTP_ALL_ASSOC) { + sp->default_stream = info->snd_sid; + sp->default_flags = info->snd_flags; + sp->default_ppid = info->snd_ppid; + sp->default_context = info->snd_context; } - if (info.snd_assoc_id == SCTP_CURRENT_ASSOC || - info.snd_assoc_id == SCTP_ALL_ASSOC) { + if (info->snd_assoc_id == SCTP_CURRENT_ASSOC || + info->snd_assoc_id == SCTP_ALL_ASSOC) { list_for_each_entry(asoc, &sp->ep->asocs, asocs) { - asoc->default_stream = info.snd_sid; - asoc->default_flags = info.snd_flags; - asoc->default_ppid = info.snd_ppid; - asoc->default_context = info.snd_context; + asoc->default_stream = info->snd_sid; + asoc->default_flags = info->snd_flags; + asoc->default_ppid = info->snd_ppid; + asoc->default_context = info->snd_context; } } @@ -4695,7 +4692,7 @@ static int sctp_setsockopt(struct sock *sk, int level, int optname, retval = sctp_setsockopt_default_send_param(sk, kopt, optlen); break; case SCTP_DEFAULT_SNDINFO: - retval = sctp_setsockopt_default_sndinfo(sk, optval, optlen); + retval = sctp_setsockopt_default_sndinfo(sk, kopt, optlen); break; case SCTP_PRIMARY_ADDR: retval = sctp_setsockopt_primary_addr(sk, optval, optlen); |