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attr: Allow attribute type 0

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{netlink,packet,unix}_diag use attribute type 0 for valid
attributes. The value was reserved and usage was prohibited
by the protocol but we can't undo the breakge.

Make libnl accept attribute type 0 to allow parsing these
attributes.

Reported-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Thomas Graf <tgraf@suug.ch>
This commit is contained in:
Thomas Graf 2013-11-28 23:14:38 +01:00
parent bda0f668b6
commit 6a8d90f5fe
1 changed files with 1 additions and 1 deletions
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lib/attr.c
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@ -192,7 +192,7 @@ static int validate_nla(struct nlattr *nla, int maxtype,
unsigned int minlen = 0; unsigned int minlen = 0;
int type = nla_type(nla); int type = nla_type(nla);
if (type <= 0 || type > maxtype) if (type < 0 || type > maxtype)
return 0; return 0;
pt = &policy[type]; pt = &policy[type];