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| author | dingtianhong <dingtianhong@huawei.com> | 2013-03-25 17:02:04 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-03-26 12:33:55 -0400 |
| commit | 14134f6584212d585b310ce95428014b653dfaf6 (patch) | |
| tree | dfaa64172441eecd90557d1f1bedba1695fa4cd6 /net | |
| parent | 465c0a165938992455357982d7f15ac105528b4a (diff) | |
| download | linux-stable-14134f6584212d585b310ce95428014b653dfaf6.tar.gz linux-stable-14134f6584212d585b310ce95428014b653dfaf6.tar.bz2 linux-stable-14134f6584212d585b310ce95428014b653dfaf6.zip | |
af_unix: dont send SCM_CREDENTIAL when dest socket is NULL
SCM_SCREDENTIALS should apply to write() syscalls only either source or destination
socket asserted SOCK_PASSCRED. The original implememtation in maybe_add_creds is wrong,
and breaks several LSB testcases ( i.e. /tset/LSB.os/netowkr/recvfrom/T.recvfrom).
Origionally-authored-by: Karel Srot <ksrot@redhat.com>
Signed-off-by: Ding Tianhong <dingtianhong@huawei.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/unix/af_unix.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index f153a8d6e339..971282b6f6a3 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1412,8 +1412,8 @@ static void maybe_add_creds(struct sk_buff *skb, const struct socket *sock, if (UNIXCB(skb).cred) return; if (test_bit(SOCK_PASSCRED, &sock->flags) || - !other->sk_socket || - test_bit(SOCK_PASSCRED, &other->sk_socket->flags)) { + (other->sk_socket && + test_bit(SOCK_PASSCRED, &other->sk_socket->flags))) { UNIXCB(skb).pid = get_pid(task_tgid(current)); UNIXCB(skb).cred = get_current_cred(); } |