From: Lev Olshvang <levonshe@yandex.com>
To: kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: mount /proc at boot as read-only
Date: Sun, 06 Jan 2019 21:13:26 +0300 [thread overview]
Message-ID: <28484691546798406@myt4-415a3339794b.qloud-c.yandex.net> (raw)
Hello all,
I am trying to harden the embedded system.
Is it possible and safe to mount /proc file system in a read-only mode and how to do this?
I have embedded system with systemd where /proc is mounted rw.
I suspect that systemd mounts it when it bebgns to bootsrtap user space.
On my currently idle and small embedded board and on QEMU I was able to remount /proc read-only.
But when I changed fstab to mount it as a read-only it is still mounted
rw,relatime after reboot.
So who mounts it first ?
Is it hardcoded in systemd when it starts process of PID 1 or in a kernel?
Regards,
Lev
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next reply other threads:[~2019-01-06 18:13 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-06 18:13 Lev Olshvang [this message]
2019-01-06 22:45 ` mount /proc at boot as read-only valdis.kletnieks
2019-01-07 8:35 ` Greg KH
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