From: Luca Boccassi <bluca@debian.org>
Date: Fri, 1 Nov 2024 11:29:19 +0000 (+0000)
Subject: util-lib/systemd-run: implement race-free PTY peer opening (#34953)
X-Git-Tag: v257-rc1~60
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fdccba15be26aa7d62f437cb23df01e28459e50f;p=thirdparty%2Fsystemd.git

util-lib/systemd-run: implement race-free PTY peer opening (#34953)

This makes use of the new TIOCGPTPEER pty ioctl() for directly opening a
PTY peer, without going via path names. This is nice because it closes a
race around allocating and opening the peer. And also has the nice
benefit that if we acquired an fd originating from some other
namespace/container, we can directly derive the peer fd from it, without
having to reenter the namespace again.
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fdccba15be26aa7d62f437cb23df01e28459e50f