This issues now starts to have impacts in some other places in the system. For instance, GNOME Builder needs this flag to correctly use QEMU as foreign-architecture emulation
see commit: https://gitlab.gnome.org/GNOME/gnome-builder/commit/b393427b86786934610 0302f2eab6bb26a7c1f7e Thanks On Tue, 11 Jul 2017 11:46:25 +0100 Ian Campbell <i...@debian.org> wrote: > Package: qemu-user-static > Version: 1:2.8+dfsg-6 > Severity: wishlist > > Dear Maintainer, > > Please consider enabling the "F" flag in the binfmt entries which this package > adds. From https://www.kernel.org/doc/html/v4.12/admin-guide/binfmt-m isc.html: > > F - fix binary > > The usual behaviour of binfmt_misc is to spawn the binary lazily when the > misc format file is invoked. However, this doesn``t work very well in the face > of mount namespaces and changeroots, so the F mode opens the binary as soon as > the emulation is installed and uses the opened image to spawn the emulator, > meaning it is always available once installed, regardless of how the > environment changes. > > This is useful because it avoids the need to bind mount the qemu- user-static > binaries into the container/chroot/whatever. > > The documentation entry appears to have been added in Linux v4.8-rc1 so I > pressume the feature was present at some point before then and is in any case > available in the 4.9 kernel used by Stretch, so enabling this in the Buster > onwards versions of this package ought to be reasonable I think. > > I'm not sure if this also applies to the qemu-user-binfmt package, that's > dynamically linked and I confess I'm not sure how that works WRT chroots and > such. > > Thanks, > Ian. > > -- System Information: > Debian Release: 9.0 > APT prefers stable > APT policy: (990, 'stable'), (500, 'oldstable-updates'), (500, 'unstable'), (500, 'testing'), (500, 'oldstable'), (1, 'experimental') > Architecture: amd64 (x86_64) > Foreign Architectures: i386 > > Kernel: Linux 4.9.0-3-amd64 (SMP w/4 CPU cores) > Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8) > Shell: /bin/sh linked to /bin/dash > Init: systemd (via /run/systemd/system) > > qemu-user-static depends on no packages. > > Versions of packages qemu-user-static recommends: > ii binfmt-support 2.1.6-2 > > Versions of packages qemu-user-static suggests: > ii sudo 1.8.19p1-2.1 > > -- no debconf information > >
