Re: [PATCH v3 1/2] exec: add PR_HIDE_SELF_EXE prctl

[Colin Walters]

On Fri, Jan 20, 2023, at 5:25 AM, Giuseppe Scrivano wrote:
> This patch adds a new prctl called PR_HIDE_SELF_EXE which allows
> processes to hide their own /proc/*/exe file. When this prctl is
> used, every access to /proc/*/exe for the calling process will
> fail with ENOENT.

How about a mount option for procfs like `mount -t procfs procfs /proc -o rw,nosuid,nodev,magiclink-no-xdev`

Where `magiclink-no-xdev` would cause all magic links to fail to cross a pid namespace or so?