netdev - [PATCH net-next v2 0/2] unix: Show number of scm files in fdinfo

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <157588565669.223723.2766246342567340687.stgit@localhost.localdomain>
Date:   Mon, 09 Dec 2019 13:03:34 +0300
From:   Kirill Tkhai <ktkhai@...tuozzo.com>
To:     netdev@...r.kernel.org
Cc:     davem@...emloft.net, axboe@...nel.dk,
        pankaj.laxminarayan.bharadiya@...el.com, keescook@...omium.org,
        viro@...iv.linux.org.uk, hare@...e.com, tglx@...utronix.de,
        edumazet@...gle.com, arnd@...db.de, ktkhai@...tuozzo.com
Subject: [PATCH net-next v2 0/2] unix: Show number of scm files in fdinfo

v2: Pass correct argument to locked in patch [2/2].

Unix sockets like a block box. You never know what is pending there:
there may be a file descriptor holding a mount or a block device,
or there may be whole universes with namespaces, sockets with receive
queues full of sockets etc.

The patchset makes number of pending scm files be visible in fdinfo.
This may be useful to determine, that socket should be investigated
or which task should be killed to put a reference counter on a resourse.

$cat /proc/[pid]/fdinfo/[unix_sk_fd] | grep scm_fds
scm_fds: 1

---

Kirill Tkhai (2):
      net: Allow to show socket-specific information in /proc/[pid]/fdinfo/[fd]
      unix: Show number of pending scm files of receive queue in fdinfo

 include/linux/net.h   |    1 +
 include/net/af_unix.h |    5 ++++
 net/socket.c          |   12 +++++++++++
 net/unix/af_unix.c    |   56 +++++++++++++++++++++++++++++++++++++++++++++----
 4 files changed, 69 insertions(+), 5 deletions(-)

--
Signed-off-by: Kirill Tkhai <ktkhai@...tuozzo.com>