linux-kernel - [PATCH v6 00/13] introduce the Xen PV Calls frontend

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: <alpine.DEB.2.10.1710231608270.574@sstabellini-ThinkPad-X260>
Date:   Tue, 24 Oct 2017 10:33:14 -0700 (PDT)
From:   Stefano Stabellini <sstabellini@...nel.org>
To:     xen-devel@...ts.xen.org
cc:     linux-kernel@...r.kernel.org, sstabellini@...nel.org,
        jgross@...e.com, boris.ostrovsky@...cle.com
Subject: [PATCH v6 00/13] introduce the Xen PV Calls frontend

Hi all,

this series introduces the frontend for the newly introduced PV Calls
procotol.

PV Calls is a paravirtualized protocol that allows the implementation of
a set of POSIX functions in a different domain. The PV Calls frontend
sends POSIX function calls to the backend, which implements them and
returns a value to the frontend and acts on the function call.

For more information about PV Calls, please read:

https://xenbits.xen.org/docs/unstable/misc/pvcalls.html

This patch series only implements the frontend driver. It doesn't
attempt to redirect POSIX calls to it. The functions exported in
pvcalls-front.h are meant to be used for that. A separate patch series
will be sent to use them and hook them into the system.


Changes in v6:
- rename PVCALLS_NR_REQ_PER_RING to PVCALLS_NR_RSP_PER_RING
- remove spin_lock/unlock around list_del_init in pvcalls_front_remove
- change list_del_init into list_del in pvcalls_front_remove,
  pvcalls_front_free_map and pvcalls_front_release
- add reviwed-bys
- return EOPNOTSUPP when functions are unimplemented in pvcalls-front
- return ret on error in pvcalls_front_accept
- return an error from __write_ring if size >= array_size
- return 0 instead of -EAGAIN from pvcalls_front_recvmsg when nothing
  was read
- add bool locked parameter to pvcalls_front_free_map
- move "kfree(map)" to pvcalls_front_free_map
- remove socketpass_mappings, now unused


Stefano Stabellini (13):
      xen/pvcalls: introduce the pvcalls xenbus frontend
      xen/pvcalls: implement frontend disconnect
      xen/pvcalls: connect to the backend
      xen/pvcalls: implement socket command and handle events
      xen/pvcalls: implement connect command
      xen/pvcalls: implement bind command
      xen/pvcalls: implement listen command
      xen/pvcalls: implement accept command
      xen/pvcalls: implement sendmsg
      xen/pvcalls: implement recvmsg
      xen/pvcalls: implement poll command
      xen/pvcalls: implement release command
      xen: introduce a Kconfig option to enable the pvcalls frontend

 drivers/xen/Kconfig         |    9 +
 drivers/xen/Makefile        |    1 +
 drivers/xen/pvcalls-front.c | 1273 +++++++++++++++++++++++++++++++++++++++++++
 drivers/xen/pvcalls-front.h |   28 +
 4 files changed, 1311 insertions(+)
 create mode 100644 drivers/xen/pvcalls-front.c
 create mode 100644 drivers/xen/pvcalls-front.h