From: Pavel Emelyanov <xemul@parallels•com>
To: David Miller <davem@davemloft•net>,
Linux Netdev List <netdev@vger•kernel.org>
Subject: [PATCH 8/13] unix_diag: Unix socket name NLA
Date: Thu, 15 Dec 2011 16:45:24 +0400 [thread overview]
Message-ID: <4EE9EBE4.70303@parallels.com> (raw)
In-Reply-To: <4EE9EB2A.4040909@parallels.com>
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>
---
include/linux/unix_diag.h | 8 ++++++++
net/unix/diag.c | 20 ++++++++++++++++++++
2 files changed, 28 insertions(+), 0 deletions(-)
diff --git a/include/linux/unix_diag.h b/include/linux/unix_diag.h
index 445184a..cc4df34 100644
--- a/include/linux/unix_diag.h
+++ b/include/linux/unix_diag.h
@@ -11,6 +11,8 @@ struct unix_diag_req {
__u32 udiag_cookie[2];
};
+#define UDIAG_SHOW_NAME 0x00000001 /* show name (not path) */
+
struct unix_diag_msg {
__u8 udiag_family;
__u8 udiag_type;
@@ -21,4 +23,10 @@ struct unix_diag_msg {
__u32 udiag_cookie[2];
};
+enum {
+ UNIX_DIAG_NAME,
+
+ UNIX_DIAG_MAX,
+};
+
#endif
diff --git a/net/unix/diag.c b/net/unix/diag.c
index d7bd48c..161ce6c 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;
--
1.5.5.6
next prev parent reply other threads:[~2011-12-15 12:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-15 12:42 [PATCH 0/13] Dumping AF_UNIX sockets via netlink Pavel Emelyanov
2011-12-15 12:42 ` [PATCH 1/13] sock_diag: Move the SOCK_DIAG_BY_FAMILY cmd declaration Pavel Emelyanov
2011-12-15 12:43 ` [PATCH 2/13] sock_diag: Fix module netlink aliases Pavel Emelyanov
2011-12-15 12:43 ` [PATCH 3/13] sock_diag: Generalize requests cookies managements Pavel Emelyanov
2011-12-15 12:44 ` [PATCH 4/13] af_unix: Export stuff required for diag module Pavel Emelyanov
2011-12-15 12:44 ` [PATCH 5/13] unix_diag: Basic module skeleton Pavel Emelyanov
2011-12-15 12:44 ` [PATCH 6/13] unix_diag: Dumping all sockets core Pavel Emelyanov
2011-12-15 12:45 ` [PATCH 7/13] unix_diag: Dumping exact socket core Pavel Emelyanov
2011-12-15 12:45 ` Pavel Emelyanov [this message]
2011-12-15 12:45 ` [PATCH 9/13] unix_diag: Unix inode info NLA Pavel Emelyanov
2011-12-15 12:45 ` [PATCH 10/13] unix_diag: Unix peer inode NLA Pavel Emelyanov
2011-12-15 12:46 ` [PATCH 11/13] unix_diag: Pending connections IDs NLA Pavel Emelyanov
2011-12-15 12:46 ` [PATCH 12/13] unix_diag: Receive queue lenght NLA Pavel Emelyanov
2011-12-15 12:46 ` [PATCH 13/13] unix_diag: Write it into kbuild Pavel Emelyanov
2011-12-15 13:28 ` [PATCH] iproute: Dump unix sockets via netlink Pavel Emelyanov
2012-01-20 20:51 ` Stephen Hemminger
2011-12-16 18:50 ` [PATCH 0/13] Dumping AF_UNIX " David Miller
2011-12-17 9:54 ` Pavel Emelyanov
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