netdev - [Patch iproute2] ss: add UNIX_DIAG_VFS and UNIX_DIAG

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Message-Id: <20180827214652.29318-1-xiyou.wangcong@gmail.com>
Date:   Mon, 27 Aug 2018 14:46:52 -0700
From:   Cong Wang <xiyou.wangcong@...il.com>
To:     netdev@...r.kernel.org
Cc:     Cong Wang <xiyou.wangcong@...il.com>,
        Stephen Hemminger <stephen@...workplumber.org>
Subject: [Patch iproute2] ss: add UNIX_DIAG_VFS and UNIX_DIAG_ICONS for unix sockets

UNIX_DIAG_VFS and UNIX_DIAG_ICONS are never used by ss,
make them available in ss -e output.

Cc: Stephen Hemminger <stephen@...workplumber.org>
Signed-off-by: Cong Wang <xiyou.wangcong@...il.com>
---
 misc/ss.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/misc/ss.c b/misc/ss.c
index 41e7762b..d28bc1ec 100644
--- a/misc/ss.c
+++ b/misc/ss.c
@@ -16,6 +16,7 @@
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/uio.h>
+#include <sys/sysmacros.h>
 #include <netinet/in.h>
 #include <string.h>
 #include <errno.h>
@@ -3604,6 +3605,28 @@ static int unix_show_sock(const struct sockaddr_nl *addr, struct nlmsghdr *nlh,
 			out(" %c-%c",
 			    mask & 1 ? '-' : '<', mask & 2 ? '-' : '>');
 		}
+		if (tb[UNIX_DIAG_VFS]) {
+			struct unix_diag_vfs uv;
+
+			memcpy(&uv, RTA_DATA(tb[UNIX_DIAG_VFS]), sizeof(uv));
+			out(" ino:%u dev:%u/%u", uv.udiag_vfs_ino, major(uv.udiag_vfs_dev),
+						 minor(uv.udiag_vfs_dev));
+		}
+		if (tb[UNIX_DIAG_ICONS]) {
+			int len = RTA_PAYLOAD(tb[UNIX_DIAG_ICONS]);
+			__u32 *peers = malloc(len);
+			int i;
+
+			if (!peers) {
+				fprintf(stderr, "ss: failed to malloc buffer\n");
+				abort();
+			}
+			memcpy(peers, RTA_DATA(tb[UNIX_DIAG_ICONS]), len);
+			out(" peers:");
+			for (i = 0; i < len / sizeof(__u32); i++)
+				out(" %u", peers[i]);
+			free(peers);
+		}
 	}
 
 	return 0;
@@ -3641,6 +3664,8 @@ static int unix_show_netlink(struct filter *f)
 	req.r.udiag_show = UDIAG_SHOW_NAME | UDIAG_SHOW_PEER | UDIAG_SHOW_RQLEN;
 	if (show_mem)
 		req.r.udiag_show |= UDIAG_SHOW_MEMINFO;
+	if (show_details)
+		req.r.udiag_show |= UDIAG_SHOW_VFS | UDIAG_SHOW_ICONS;
 
 	return handle_netlink_request(f, &req.nlh, sizeof(req), unix_show_sock);
 }
-- 
2.14.4