diff options
| author | Pavel Emelyanov <xemul@parallels.com> | 2011-12-15 02:45:24 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-16 13:48:28 -0500 |
| commit | f5248b48a64c221dd6157ab9cbee5a36ee45e6ed (patch) | |
| tree | f03c84d11417f77827060f48e1bf09435a28c25b /net/unix/diag.c | |
| parent | 5d3cae8bc39dd38d1aa5fd4bbc788c7b43fcaa71 (diff) | |
unix_diag: Unix socket name NLA
Report the sun_path when requested as NLA. With leading '\0' if
present but without the leading AF_UNIX bits.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/unix/diag.c')
| -rw-r--r-- | net/unix/diag.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/net/unix/diag.c b/net/unix/diag.c index d7bd48c49ee..161ce6c05e3 100644 --- a/net/unix/diag.c +++ b/net/unix/diag.c @@ -10,6 +10,22 @@ #define UNIX_DIAG_PUT(skb, attrtype, attrlen) \ RTA_DATA(__RTA_PUT(skb, attrtype, attrlen)) +static int sk_diag_dump_name(struct sock *sk, struct sk_buff *nlskb) +{ + struct unix_address *addr = unix_sk(sk)->addr; + char *s; + + if (addr) { + s = UNIX_DIAG_PUT(nlskb, UNIX_DIAG_NAME, addr->len - sizeof(short)); + memcpy(s, addr->name->sun_path, addr->len - sizeof(short)); + } + + return 0; + +rtattr_failure: + return -EMSGSIZE; +} + static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_req *req, u32 pid, u32 seq, u32 flags, int sk_ino) { @@ -28,6 +44,10 @@ static int sk_diag_fill(struct sock *sk, struct sk_buff *skb, struct unix_diag_r rep->udiag_ino = sk_ino; sock_diag_save_cookie(sk, rep->udiag_cookie); + if ((req->udiag_show & UDIAG_SHOW_NAME) && + sk_diag_dump_name(sk, skb)) + goto nlmsg_failure; + nlh->nlmsg_len = skb_tail_pointer(skb) - b; return skb->len; |