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[NETLINK]: Clear padding in netlink messages

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy 2005-06-28 12:54:43 -07:00 committed by David S. Miller
parent 4095ebf1e6
commit b3563c4fbf
3 changed files with 6 additions and 1 deletions
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1
include/linux/netlink.h
View File

@ -168,6 +168,7 @@ __nlmsg_put(struct sk_buff *skb, u32 pid, u32 seq, int type, int len, int flags)
nlh->nlmsg_flags = flags;
nlh->nlmsg_pid = pid;
nlh->nlmsg_seq = seq;
memset(NLMSG_DATA(nlh) + len, 0, NLMSG_ALIGN(size) - size);
return nlh;
}

5
include/linux/rtnetlink.h
View File

@ -898,7 +898,9 @@ extern void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const voi
memcpy(skb_put(skb, attrlen), data, attrlen); })
#define RTA_PUT_NOHDR(skb, attrlen, data) \
RTA_APPEND(skb, RTA_ALIGN(attrlen), data)
({ RTA_APPEND(skb, RTA_ALIGN(attrlen), data); \
memset(skb->tail - (RTA_ALIGN(attrlen) - attrlen), 0, \
RTA_ALIGN(attrlen) - attrlen); })
#define RTA_PUT_U8(skb, attrtype, value) \
({ u8 _tmp = (value); \
@ -978,6 +980,7 @@ __rta_reserve(struct sk_buff *skb, int attrtype, int attrlen)
rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
rta->rta_type = attrtype;
rta->rta_len = size;
memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
return rta;
}

1
net/core/rtnetlink.c
View File

@ -126,6 +126,7 @@ void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data
rta->rta_type = attrtype;
rta->rta_len = size;
memcpy(RTA_DATA(rta), data, attrlen);
memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
}
size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size)