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path: root/libpod/oci_conmon_linux.go
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* Ensure that exec sessions inherit supplemental groupsMatthew Heon2020-02-28
| | | | | | | | This corrects a regression from Podman 1.4.x where container exec sessions inherited supplemental groups from the container, iff the exec session did not specify a user. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* rootless: fix a regression when using -dGiuseppe Scrivano2020-02-18
| | | | | | | | | | | | when using -d and port mapping, make sure the correct fd is injected into conmon. Move the pipe creation earlier as the fd must be known at the time we create the container through conmon. Closes: https://github.com/containers/libpod/issues/5167 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Merge pull request #4861 from giuseppe/add-cgroups-disabled-conmonOpenShift Merge Robot2020-01-22
|\ | | | | oci_conmon: do not create a cgroup under systemd
| * oci_conmon: do not create a cgroup under systemdGiuseppe Scrivano2020-01-16
| | | | | | | | | | | | | | | | Detect whether we are running under systemd (if the INVOCATION_ID is set). If Podman is running under a systemd service, we do not need to create a cgroup for conmon. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
| * podman: add new option --cgroups=no-conmonGiuseppe Scrivano2020-01-16
| | | | | | | | | | | | | | | | it allows to disable cgroups creation only for the conmon process. A new cgroup is created for the container payload. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | Add an API for Attach over HTTP APIMatthew Heon2020-01-16
|/ | | | | | | | | | | | | | | | | | | | | | | | | | The new APIv2 branch provides an HTTP-based remote API to Podman. The requirements of this are, unfortunately, incompatible with the existing Attach API. For non-terminal attach, we need append a header to what was copied from the container, to multiplex STDOUT and STDERR; to do this with the old API, we'd need to copy into an intermediate buffer first, to handle the headers. To avoid this, provide a new API to handle all aspects of terminal and non-terminal attach, including closing the hijacked HTTP connection. This might be a bit too specific, but for now, it seems to be the simplest approach. At the same time, add a Resize endpoint. This needs to be a separate endpoint, so our existing channel approach does not work here. I wanted to rework the rest of attach at the same time (some parts of it, particularly how we start the Attach session and how we do resizing, are (in my opinion) handled much better here. That may still be on the table, but I wanted to avoid breaking existing APIs in this already massive change. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* oci_conmon: not make accessible dirs if not neededGiuseppe Scrivano2020-01-14
| | | | | | | | | | | | | | | do not change the permissions mask for the rundir and the tmpdir when running a container with a user namespace and the current user is mapped inside the user namespace. The change was introduced with 849548ffb8e958e901317eceffdcc2d918cafd8d, that dropped the intermediate mount namespace in favor of allowing root into the user namespace to access these directories. Closes: https://github.com/containers/libpod/issues/4846 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* make lint: enable gocriticValentin Rothberg2020-01-13
| | | | | | | `gocritic` is a powerful linter that helps in preventing certain kinds of errors as well as enforcing a coding style. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Merge pull request #4805 from giuseppe/log-tagOpenShift Merge Robot2020-01-10
|\ | | | | log: support --log-opt tag=
| * log: support --log-opt tag=Giuseppe Scrivano2020-01-10
| | | | | | | | | | | | | | | | | | | | support a custom tag to add to each log for the container. It is currently supported only by the journald backend. Closes: https://github.com/containers/libpod/issues/3653 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | Merge pull request #4818 from haircommander/piped-exec-fixOpenShift Merge Robot2020-01-09
|\ \ | |/ |/| exec: fix pipes
| * exec: fix pipesPeter Hunt2020-01-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In a largely anticlimatic solution to the saga of piped input from conmon, we come to this solution. When we pass the Stdin stream to the exec.Command structure, it's immediately consumed and lost, instead of being consumed through CopyDetachable(). When we don't pass -i in, conmon is not told to create a masterfd_stdin, and won't pass anything to the container. With both, we can do echo hi | podman exec -til cat and get the expected hi Signed-off-by: Peter Hunt <pehunt@redhat.com>
* | fix lint: correct func identifier in commentValentin Rothberg2020-01-08
| | | | | | | | Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* | rootless: use RootlessKit port forwarderAkihiro Suda2020-01-08
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RootlessKit port forwarder has a lot of advantages over the slirp4netns port forwarder: * Very high throughput. Benchmark result on Travis: socat: 5.2 Gbps, slirp4netns: 8.3 Gbps, RootlessKit: 27.3 Gbps (https://travis-ci.org/rootless-containers/rootlesskit/builds/597056377) * Connections from the host are treated as 127.0.0.1 rather than 10.0.2.2 in the namespace. No UDP issue (#4586) * No tcp_rmem issue (#4537) * Probably works with IPv6. Even if not, it is trivial to support IPv6. (#4311) * Easily extensible for future support of SCTP * Easily extensible for future support of `lxc-user-nic` SUID network RootlessKit port forwarder has been already adopted as the default port forwarder by Rootless Docker/Moby, and no issue has been reported AFAIK. As the port forwarder is imported as a Go package, no `rootlesskit` binary is required for Podman. Fix #4586 May-fix #4559 Fix #4537 May-fix #4311 See https://github.com/rootless-containers/rootlesskit/blob/v0.7.0/pkg/port/builtin/builtin.go Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
* Reap exec sessions on cleanup and removalMatthew Heon2019-12-12
| | | | | | | | | | | | | | | | | | | | | | We currently rely on exec sessions being removed from the state by the Exec() API itself, on detecting the session stopping. This is not a reliable method, though. The Podman frontend for exec could be killed before the session ended, or another Podman process could be holding the lock and prevent update (most notable in `run --rm`, when a container with an active exec session is stopped). To resolve this, add a function to reap active exec sessions from the state, and use it on cleanup (to clear sessions after the container stops) and remove (to do the same when --rm is passed). This is a bit more complicated than it ought to be because Kata and company exist, and we can't guarantee the exec session has a PID on the host, so we have to plumb this through to the OCI runtime. Fixes #4666 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Merge pull request #4352 from vrothberg/config-packageOpenShift Merge Robot2019-10-31
|\ | | | | refactor libpod config into libpod/config
| * add libpod/configValentin Rothberg2019-10-31
| | | | | | | | | | | | | | | | | | | | | | | | Refactor the `RuntimeConfig` along with related code from libpod into libpod/config. Note that this is a first step of consolidating code into more coherent packages to make the code more maintainable and less prone to regressions on the long runs. Some libpod definitions were moved to `libpod/define` to resolve circular dependencies. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* | Merge pull request #4380 from giuseppe/rootless-create-cgroup-for-conmonOpenShift Merge Robot2019-10-30
|\ \ | | | | | | libpod, rootless: create cgroup for conmon
| * | libpod, rootless: create cgroup for conmonGiuseppe Scrivano2019-10-30
| |/ | | | | | | | | | | | | | | always create a new cgroup for conmon also when running as rootless. We were previously creating one only when necessary, but that behaves differently than root containers. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* / Processes execed into container should match container labelDaniel J Walsh2019-10-29
|/ | | | | | Processes execed into a container were not being run with the correct label. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* exec: remove unused varPeter Hunt2019-10-21
| | | | Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Add a MissingRuntime implementationMatthew Heon2019-10-15
| | | | | | | | | | | | | | | | | When a container is created with a given OCI runtime, but then it is uninstalled or removed from the configuration file, Libpod presently reacts very poorly. The EvictContainer code can potentially remove these containers, but we still can't see them in `podman ps` (aside from the massive logrus.Errorf messages they create). Providing a minimal OCI runtime implementation for missing runtimes allows us to behave better. We'll be able to retrieve containers from the database, though we still pop up an error for each missing runtime. For containers which are stopped, we can remove them as normal. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* change error wording when conmon fails without logsValentin Rothberg2019-10-14
| | | | | | | | | | | | | | In some cases, conmon can fail without writing logs. Change the wording of the error message from "error reading container (probably exited) json message" to "container create failed (no logs from conmon)" to have a more helpful error message that is more consistent with other errors at that stage of execution. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Move OCI runtime implementation behind an interfaceMatthew Heon2019-10-10
For future work, we need multiple implementations of the OCI runtime, not just a Conmon-wrapped runtime matching the runc CLI. As part of this, do some refactoring on the interface for exec (move to a struct, not a massive list of arguments). Also, add 'all' support to Kill and Stop (supported by runc and used a bit internally for removing containers). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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