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| author | Patrick McHardy <kaber@trash.net> | 2005-06-28 12:54:43 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2005-06-28 12:54:43 -0700 |
| commit | b3563c4fbff906991a1b4ef4609f99cca2a0de6a (patch) | |
| tree | e5c0e4cb4a0a48ebeeb8b1515128c115c5aa528c | |
| parent | 4095ebf1e641b0f37ee1cd04c903bb85cf4ed25b (diff) | |
| download | linux-b3563c4fbff906991a1b4ef4609f99cca2a0de6a.tar.gz linux-b3563c4fbff906991a1b4ef4609f99cca2a0de6a.tar.bz2 linux-b3563c4fbff906991a1b4ef4609f99cca2a0de6a.zip | |
[NETLINK]: Clear padding in netlink messages
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/netlink.h | 1 | ||||
| -rw-r--r-- | include/linux/rtnetlink.h | 5 | ||||
| -rw-r--r-- | net/core/rtnetlink.c | 1 |
3 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/netlink.h b/include/linux/netlink.h index 3029cad63a01..27e4d164a108 100644 --- a/include/linux/netlink.h +++ b/include/linux/netlink.h @@ -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; } diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index d021888b58f1..dc26e82ba0fd 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -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; } diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index e013d836a7ab..879237c378f8 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -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) |