From: Arnd Bergmann <arnd@kernel.org>
To: netdev@vger.kernel.org
Cc: Arnd Bergmann <arnd@arndb.de>, Al Viro <viro@zeniv.linux.org.uk>,
Andrew Lunn <andrew@lunn.ch>, Christoph Hellwig <hch@lst.de>,
David Ahern <dsahern@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>,
Jakub Kicinski <kuba@kernel.org>,
Kees Cook <keescook@chromium.org>, Marco Elver <elver@google.com>,
linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org
Subject: [PATCH net-next v6 0/6] remove compat_alloc_user_space()
Date: Thu, 22 Jul 2021 16:28:57 +0200 [thread overview]
Message-ID: <20210722142903.213084-1-arnd@kernel.org> (raw)
From: Arnd Bergmann <arnd@arndb.de>
This is the fifth version of my series, now spanning four patches
instead of two, with a new approach for handling struct ifreq
compatibility after I realized that my earlier approach introduces
additional problems.
The idea here is to always push down the compat conversion
deeper into the call stack: rather than pretending to be
native mode with a modified copy of the original data on
the user space stack, have the code that actually works on
the data understand the difference between native and compat
versions.
I have spent a long time looking at all drivers that implement
an ndo_do_ioctl callback to verify that my assumptions are
correct. This has led to a series of ~30 additional patches
that I am not including here but will post separately, fixing
a number of bugs in SIOCDEVPRIVATE ioctls, removing dead
code, and splitting ndo_do_ioctl into multiple new ndo callbacks
for private and ethernet specific commands.
Arnd
Link: https://lore.kernel.org/netdev/20201124151828.169152-1-arnd@kernel.org/
Changes in v6:
- Split out and expand linux/compat.h rework
- Split ifconf change into two patches
- Rebase on latest net-next/master
Changes in v5:
- Rebase to v5.14-rc2
- Fix a few build issues
Changes in v4:
- build fix without CONFIG_INET
- build fix without CONFIG_COMPAT
- style fixes pointed out by hch
Changes in v3:
- complete rewrite of the series
Arnd Bergmann (6):
compat: make linux/compat.h available everywhere
ethtool: improve compat ioctl handling
net: socket: rework SIOC?IFMAP ioctls
net: socket: remove register_gifconf
net: socket: simplify dev_ifconf handling
net: socket: rework compat_ifreq_ioctl()
arch/arm64/include/asm/compat.h | 14 +-
arch/mips/include/asm/compat.h | 24 ++-
arch/parisc/include/asm/compat.h | 14 +-
arch/powerpc/include/asm/compat.h | 11 --
arch/s390/include/asm/compat.h | 14 +-
arch/sparc/include/asm/compat.h | 14 +-
arch/x86/include/asm/compat.h | 14 +-
arch/x86/include/asm/signal.h | 1 +
include/asm-generic/compat.h | 17 ++
include/linux/compat.h | 32 ++--
include/linux/ethtool.h | 4 -
include/linux/inetdevice.h | 9 +
include/linux/netdevice.h | 12 +-
net/appletalk/ddp.c | 4 +-
net/core/dev_ioctl.c | 153 +++++++++-------
net/ethtool/ioctl.c | 136 ++++++++++++--
net/ieee802154/socket.c | 4 +-
net/ipv4/af_inet.c | 6 +-
net/ipv4/devinet.c | 4 +-
net/qrtr/qrtr.c | 4 +-
net/socket.c | 292 +++++++-----------------------
21 files changed, 352 insertions(+), 431 deletions(-)
--
2.29.2
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Ahern <dsahern@kernel.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Marco Elver <elver@google.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: netdev@vger.kernel.org
next reply other threads:[~2021-07-22 14:29 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-22 14:28 Arnd Bergmann [this message]
2021-07-22 14:28 ` [PATCH net-next v6 1/6] compat: make linux/compat.h available everywhere Arnd Bergmann
2021-07-22 16:22 ` Christoph Hellwig
2021-07-22 14:28 ` [PATCH net-next v6 2/6] ethtool: improve compat ioctl handling Arnd Bergmann
2021-07-23 23:50 ` Shannon Nelson
2021-07-22 14:29 ` [PATCH net-next v6 3/6] net: socket: rework SIOC?IFMAP ioctls Arnd Bergmann
2021-07-22 14:29 ` [PATCH net-next v6 4/6] net: socket: remove register_gifconf Arnd Bergmann
2021-07-22 16:24 ` Christoph Hellwig
2021-07-22 14:29 ` [PATCH net-next v6 5/6] net: socket: simplify dev_ifconf handling Arnd Bergmann
2021-07-22 16:26 ` Christoph Hellwig
2021-07-22 14:29 ` [PATCH net-next v6 6/6] net: socket: rework compat_ifreq_ioctl() Arnd Bergmann
2021-07-22 16:26 ` Christoph Hellwig
2021-07-23 14:40 ` [PATCH net-next v6 0/6] remove compat_alloc_user_space() patchwork-bot+netdevbpf
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