Since today, the URL from download.opensuse.org started returning a
HTTP 302 redirect, so -L option for curl is needed to follow it.
While at it, remove apt-key as per its man page recommendation:
> Note: Instead of using this command a keyring should be placed
> directly in the /etc/apt/trusted.gpg.d/ directory with a descriptive
> name and either "gpg" or "asc" as file extension.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
The idea is to remove the need for cloning the entire runc binary by
replacing the final execve() call of the container process with an
execve() call to a clone of a small C binary which just does an execve()
of its arguments.
This provides similar protection against CVE-2019-5736 but without
requiring a >10MB binary copy for each "runc init". When compiled with
musl, runc-dmz is 13kB (though unfortunately with glibc, it is 1.1MB
which is still quite large).
It should be noted that there is still a window where the container
processes could get access to the host runc binary, but because we set
ourselves as non-dumpable the container would need CAP_SYS_PTRACE (which
is not enabled by default in Docker) in order to get around the
proc_fd_access_allowed() checks. In addition, since Linux 4.10[1] the
kernel blocks access entirely for user namespaced containers in this
scenario. For those cases we cannot use runc-dmz, but most containers
won't have this issue.
This new runc-dmz binary can be opted out of at compile time by setting
the "runc_nodmz" buildtag, and at runtime by setting the RUNC_DMZ=legacy
environment variable. In both cases, runc will fall back to the classic
/proc/self/exe-based cloning trick. If /proc/self/exe is already a
sealed memfd (namely if the user is using contrib/cmd/memfd-bind to
create a persistent sealed memfd for runc), neither runc-dmz nor
/proc/self/exe cloning will be used because they are not necessary.
[1]: https://github.com/torvalds/linux/commit/bfedb589252c01fa505ac9f6f2a3d5d68d707ef4
Co-authored-by: lifubang <lifubang@acmcoder.com>
Signed-off-by: lifubang <lifubang@acmcoder.com>
[cyphar: address various review nits]
[cyphar: fix runc-dmz cross-compilation]
[cyphar: embed runc-dmz into runc binary and clone in Go code]
[cyphar: make runc-dmz optional, with fallback to /proc/self/exe cloning]
[cyphar: do not use runc-dmz when the container has certain privs]
Co-authored-by: Aleksa Sarai <cyphar@cyphar.com>
Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
The default timeout is 360 minutes, which is way long for these jobs.
If the CI (or a test) has stuck, we'd better know about it earlier than
in 6 hours.
Set the timeouts for some [relatively] long running jobs conservatively:
- test and release jobs usually take ~10 minutes;
- lint job takes 1 minute (but can be a few times slower when we switch
Go or golangci-lint version);
- cross-386 job takes about 2 minutes;
- the rest is seconds (and I am lazy to set timeouts everywhere).
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
We used to skip testing rootless integration tests for systemd, because
in case of cgroup v1 it does not support user delegation.
Since we added ubuntu 22.04 to the testing matrix, we can actually test
rootless+systemd there (with the proper systemd setup).
Fixes: 953e1cc485
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
As of today, installing fails with
> libc6:i386 : Depends: libgcc-s1:i386 but it is not going to be installed
Add the package explicitly to work around that.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
The first kludge is not needed since the switch to Ubuntu 22.04 in
commit 953e1cc48.
The second one is not needed since Go 1.20.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
For test jobs, add ubuntu 22.04 into the matrix, so we can test of both
cgroup v1 and v2.
For validate jobs, just switch to ubuntu 22.04
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
This version is already used by Cirrus CI Fedora 37 job, but other CI
jobs are still using 1.3.0.
Bump it everywhere so we can enjoy new version features and fixes.
For one thing, I noticed that new bats is reporting error location
correctly.
We will also be able to use "run !" and "run -N" commands.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
When golang 1.19 is used to build unit tests on 386, it fails like this:
sudo -E PATH="$PATH" -- make GOARCH=386 CGO_ENABLED=1 localunittest
<...>
go test -timeout 3m -tags "seccomp" -v ./...
<...>
# github.com/opencontainers/runc/libcontainer/capabilities.test
runtime/cgo(.text): unknown symbol __stack_chk_fail_local in pcrel
runtime/cgo(.text): unknown symbol __stack_chk_fail_local in pcrel
runtime/cgo(.text): unknown symbol __stack_chk_fail_local in pcrel
runtime/cgo(.text): unknown symbol __stack_chk_fail_local in pcrel
runtime/cgo(.text): unknown symbol __stack_chk_fail_local in pcrel
runtime/cgo(.text): relocation target __stack_chk_fail_local not defined
runtime/cgo(.text): relocation target __stack_chk_fail_local not defined
The fix is to add CGO_CFLAGS=-fno-stack-protector.
See also:
- https://github.com/docker-library/golang/pull/426
- https://go.dev/issue/52919
- https://go.dev/issue/54313
- https://go-review.googlesource.com/c/go/+/421935
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
It doesn't matter whether static or dynamic linking is used, runc
always needs libcontainer/nsenter, which is written in C and thus
requires cgo. Same is true for libcontainer/integration.
In addition, contrib/pkg/seccompagent also needs cgo (if seccomp build
tag is set), as it need to be linked against libseccomp C library.
By default, cgo is disabled when cross-compiling, meaning that
CGO_ENABLED=1 has to be set explicitly in such cases.
In all other cases (e.g. other contrib binaries) we do not need cgo.
Remove CGO_ENABLED=1 from GO_BUILD_STATIC (as it does not have anything
to do with static linking), and add it to all targets that require it.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Since the recent bump of actions/setup-go to v3 (commit
9d2268b9db), specifying "stable:" is no longer needed
when we want to try a beta or rc version of Go.
Remove it.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Require go 1.17 from now on, since go 1.16 is no longer supported.
Drop go1.16 compatibility.
NOTE we also have to install go 1.18 from Vagrantfile, because
Fedora 35 comes with Go 1.16.x which can't be used.
Note the changes to go.mod and vendor are due to
https://go.dev/doc/go1.17#tools
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
As reported in [1], in a case where read-only fuse (sshfs) mount
is used as a volume without specifying ro flag, the kernel fails
to remount it (when adding various flags such as nosuid and nodev),
returning EPERM.
Here's the relevant strace line:
> [pid 333966] mount("/tmp/bats-run-PRVfWc/runc.RbNv8g/bundle/mnt", "/proc/self/fd/7", 0xc0001e9164, MS_NOSUID|MS_NODEV|MS_REMOUNT|MS_BIND|MS_REC, NULL) = -1 EPERM (Operation not permitted)
I was not able to reproduce it with other read-only mounts as the source
(tried tmpfs, read-only bind mount, and an ext2 mount), so somehow this
might be specific to fuse.
The fix is to check whether the source has RDONLY flag, and retry the
remount with this flag added.
A test case (which was kind of hard to write) is added, and it fails
without the fix. Note that rootless user need to be able to ssh to
rootless@localhost in order to sshfs to work -- amend setup scripts
to make it work, and skip the test if the setup is not working.
[1] https://github.com/containers/podman/issues/12205
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Go 1.15 is not supported since Go 1.17 release (16 Aug 2021), and some
packages that we use already require Go 1.16+ (notably,
github.com/cilium/ebpf v0.7.0).
Let's require Go 1.16+.
Remove Go version requirement from README when describing dependencies,
since it is no longer needed:
$ GO=go1.15.15 make vendor
go1.15.15 mod tidy
go mod tidy: go.mod file indicates go 1.16, but maximum supported version is 1.15
make: *** [Makefile:141: vendor] Error 1
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Jobs verify/compile-buildtags and verify/deps relied on whatever Go
version is available from the Ubuntu-20.04 image, which seems to be
1.15.x).
Job test/cross-i386 was installing whatever Go version is considered to
be the default one by actions/setup-go@v2, which seems to be go 1.15.15
at the moment.
Fix all three jobs to install Go 1.x (which should translate to latest
stable Go version, i.e. 1.17.2 as of now).
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
As commits 120f74060 and a58718013 were added independently,
criu-dev go version was left at 1.16.x. Fix this.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
Treat warning as errors only in the CI. We can enforce it in the source
code (like setting CFLAGS in libcontainer/nsenter/nsenter.go), but that
can force other downstream to patch the code if thei C compiler produces
warnings. For that reason, we do it only on the CI.
Todays CGO warnings are quite hidden in the CI (only shown for the
compilation step, that is collapsed) and CI is green anyways. With this
patch, CI fails if a warning is introduced.
Signed-off-by: Rodrigo Campos <rodrigo@kinvolk.io>
Add testing against criu-dev branch instead of a released version
(happens to be criu v3.15 at the moment), to check how it works.
Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
dependabot[bot]