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| author | Jan Engelhardt <jengelh@medozas.de> | 2011-01-07 03:15:05 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-01-09 16:25:03 -0800 |
| commit | 0ab03c2b1478f2438d2c80204f7fef65b1bca9cf (patch) | |
| tree | a130abc7a3cc2d5c326b1bbdad80c06e741db3fd /net/netlink | |
| parent | dba5a68ae147d0672d4b9259f3ece37777f8b2fa (diff) | |
| download | lwn-0ab03c2b1478f2438d2c80204f7fef65b1bca9cf.tar.gz lwn-0ab03c2b1478f2438d2c80204f7fef65b1bca9cf.zip | |
netlink: test for all flags of the NLM_F_DUMP composite
Due to NLM_F_DUMP is composed of two bits, NLM_F_ROOT | NLM_F_MATCH,
when doing "if (x & NLM_F_DUMP)", it tests for _either_ of the bits
being set. Because NLM_F_MATCH's value overlaps with NLM_F_EXCL,
non-dump requests with NLM_F_EXCL set are mistaken as dump requests.
Substitute the condition to test for _all_ bits being set.
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink')
| -rw-r--r-- | net/netlink/genetlink.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/netlink/genetlink.c b/net/netlink/genetlink.c index 1781d99145e2..f83cb370292b 100644 --- a/net/netlink/genetlink.c +++ b/net/netlink/genetlink.c @@ -519,7 +519,7 @@ static int genl_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) security_netlink_recv(skb, CAP_NET_ADMIN)) return -EPERM; - if (nlh->nlmsg_flags & NLM_F_DUMP) { + if ((nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP) { if (ops->dumpit == NULL) return -EOPNOTSUPP; |