future: sync

[ezrizhu]

ideally we don’t want to use nc.

• shared fd, fifo
• lockfile

could use a binary but it’s last resort.

• We want to run everything in the same user, ls -lah should have the same output inside and outside of try, as a non-root user.

[ezrizhu]

~
λ cd $(mktemp -d)
/tmp/tmp.LmMxToZOXw
λ mkfifo test
/tmp/tmp.LmMxToZOXw
λ unshare --mount --map-root-user --user --pid --fork /bin/bash
root@sherlock:/tmp/tmp.LmMxToZOXw# echo a > test
root@sherlock:/tmp/tmp.LmMxToZOXw#

~
λ cd /tmp/tmp.LmMxToZOXw
/tmp/tmp.LmMxToZOXw
λ cat test
a

could do fifo

[ezrizhu]

poc exists https://github.com/binpash/try/commit/da611fd0b55b6b9bf269c2f545984c367c2a2f33 now, next step is to incorporate this into main.