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| author | Martin KaFai Lau <martin.lau@kernel.org> | 2022-09-02 02:28:53 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2022-09-03 05:34:31 +0200 |
| commit | 6dadbe4bac68309eb46ab0f30e8ff47a789df49a (patch) | |
| tree | 9bc4341200aac48e114bda425e8afeda531cbab3 /net/ipv6/ip6mr.c | |
| parent | net: Add a len argument to compat_ipv6_get_msfilter() (diff) | |
| download | linux-6dadbe4bac68309eb46ab0f30e8ff47a789df49a.tar.xz linux-6dadbe4bac68309eb46ab0f30e8ff47a789df49a.zip | |
bpf: net: Change do_ipv6_getsockopt() to take the sockptr_t argument
Similar to the earlier patch that changes sk_getsockopt() to
take the sockptr_t argument . This patch also changes
do_ipv6_getsockopt() to take the sockptr_t argument such that
a latter patch can make bpf_getsockopt(SOL_IPV6) to reuse
do_ipv6_getsockopt().
Note on the change in ip6_mc_msfget(). This function is to
return an array of sockaddr_storage in optval. This function
is shared between ipv6_get_msfilter() and compat_ipv6_get_msfilter().
However, the sockaddr_storage is stored at different offset of the
optval because of the difference between group_filter and
compat_group_filter. Thus, a new 'ss_offset' argument is
added to ip6_mc_msfget().
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Link: https://lore.kernel.org/r/20220902002853.2892532-1-kafai@fb.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'net/ipv6/ip6mr.c')
| -rw-r--r-- | net/ipv6/ip6mr.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c index a9ba41648e36..516e83b52f26 100644 --- a/net/ipv6/ip6mr.c +++ b/net/ipv6/ip6mr.c @@ -1827,8 +1827,8 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, sockptr_t optval, * Getsock opt support for the multicast routing system. */ -int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval, - int __user *optlen) +int ip6_mroute_getsockopt(struct sock *sk, int optname, sockptr_t optval, + sockptr_t optlen) { int olr; int val; @@ -1859,16 +1859,16 @@ int ip6_mroute_getsockopt(struct sock *sk, int optname, char __user *optval, return -ENOPROTOOPT; } - if (get_user(olr, optlen)) + if (copy_from_sockptr(&olr, optlen, sizeof(int))) return -EFAULT; olr = min_t(int, olr, sizeof(int)); if (olr < 0) return -EINVAL; - if (put_user(olr, optlen)) + if (copy_to_sockptr(optlen, &olr, sizeof(int))) return -EFAULT; - if (copy_to_user(optval, &val, olr)) + if (copy_to_sockptr(optval, &val, olr)) return -EFAULT; return 0; } |