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369b48b43aThe sandboxer can receive the character "a" as input from the environment variable LL_SCOPE to restrict sandboxed processes from connecting to an abstract UNIX socket created by a process outside of the sandbox. Example ======= Create an abstract UNIX socket to listen with socat(1): socat abstract-listen:mysocket - Create a sandboxed shell and pass the character "a" to LL_SCOPED: LL_FS_RO=/ LL_FS_RW=. LL_SCOPED="a" ./sandboxer /bin/bash Note that any other form of input (e.g. "a:a", "aa", etc) is not acceptable. If the sandboxed process tries to connect to the listening socket, the connection will fail: socat - abstract-connect:mysocket Signed-off-by: Tahera Fahimi <fahimitahera@gmail.com> Link: https://lore.kernel.org/r/d8af908f00b77415caa3eb0f4de631c3794e4909.1725494372.git.fahimitahera@gmail.com [mic: Improve commit message, simplify check_ruleset_scope() with inverted error code and only one scoped change, always unset environment variable] 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.