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f490e205bcThe sandboxer can receive the character "s" as input from the environment variable LL_SCOPE to restrict sandboxed processes from sending signals to processes outside of the sandbox. Example ======= Create a sandboxed shell and pass the character "s" to LL_SCOPED: LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="s" ./sandboxer /bin/bash Try to send a SIGTRAP to a process with process ID <PID> through: kill -SIGTRAP <PID> The sandboxed process should not be able to send the signal. Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com> Link: https://lore.kernel.org/r/1f3f1992b2abeb8e5d7aa61b854e1b0721978b9a.1725657728.git.fahimitahera@gmail.com [mic: Improve commit message, simplify code, rebase on previous sample change] Signed-off-by: Mickaël Salaün <mic@digikod.net> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.