This makes the ostree trivial-httpd --autoexit feature work better,
because it seems to exit whenever the root directory changes (i.e. not
only when its deleted).
This means the root dir can't be the repo (because then we can't
update the repo), or the base testdir (because we create files there
too), so instead we make the repo $testdir/repos/test and
$testdir/repos as the httpd root.
In autobuilder environments that deprive the build of capabilities,
it is entirely possible that we have a system bwrap(1) but cannot
run it, for example because CAP_SYS_ADMIN has been excluded from
the capability bounding set. Tell the tests which bwrap we are
going to run, so we can run it in a simpler way and see whether
it works.
Debian's sbuild autobuilder currently suffers from a different
issue in which pivot_root(2) returns EINVAL, possibly caused by
sbuild being chroot-based and so not having the mount point
structure that is required for pivot_root. This avoids the
problematic build-time tests there too; they work on ci.debian.net,
which uses lxc instead of chroots, and in virtual machines.
Because $(BWRAP) might be non-absolute, we need to search PATH for it.
Signed-off-by: Simon McVittie <smcv@debian.org>
An assertion failure that says res is FALSE is a lot less useful
than an assertion failure that says we got a specific GError.
Signed-off-by: Simon McVittie <smcv@debian.org>
