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From: Evan Green <evgreen@chromium.org>
To: Andy Gross <andy.gross@linaro.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Brian Norris <briannorris@chromium.org>,
	Ben Chan <benchan@chromium.org>,
	Evan Green <evgreen@chromium.org>,
	linux-arm-msm@vger.kernel.org,
	David Brown <david.brown@linaro.org>,
	linux-kernel@vger.kernel.org
Subject: [PATCH v2 0/2] soc: qcom: rmtfs-mem: Support non-root rmtfs daemons
Date: Fri, 21 Dec 2018 12:09:59 -0800	[thread overview]
Message-ID: <20181221201001.160613-1-evgreen@chromium.org> (raw)

This series contains minor fixes needed to better support running an
rmtfs daemon from an unprivileged process:
 - Enable uevents on the child character device by adding a struct
class to the parent. I needed these so that I could change the
ownership of /dev/qcom_rmtfs_mem1, and drove myself crazy trying to
understand why my udev rules never fired.
 - Enable access to phys_addr and size sysfs attributes. The daemon
needs to read these, and they don't really contain anything sensitive,
so expose them.

I still need CAP_NET_ADMIN to be able to bind to the right qrtr port,
but at least with these changes I can run as a different user, and drop
all other privileges.

Changes in v2:
- Moved class registration/deregistration into init/exit routines (Brian)

Evan Green (2):
  soc: qcom: rmtfs-mem: Add class to enable uevents
  soc: qcom: rmtfs-mem: Make sysfs attributes world-readable

 drivers/soc/qcom/rmtfs_mem.c | 35 ++++++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 11 deletions(-)

-- 
2.18.1


             reply	other threads:[~2018-12-21 20:10 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-21 20:09 Evan Green [this message]
2018-12-21 20:10 ` [PATCH v2 1/2] soc: qcom: rmtfs-mem: Add class to enable uevents Evan Green
2018-12-21 21:55   ` Brian Norris
2018-12-21 22:05   ` Bjorn Andersson
2019-01-02 17:15     ` Evan Green
2018-12-21 20:10 ` [PATCH v2 2/2] soc: qcom: rmtfs-mem: Make sysfs attributes world-readable Evan Green
2018-12-21 22:06   ` Bjorn Andersson

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