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path: root/libpod/container_internal.go
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* Stop excessive wrapping of errorsDaniel J Walsh2020-10-30
| | | | | | | | | | | | Most of the builtin golang functions like os.Stat and os.Open report errors including the file system object path. We should not wrap these errors and put the file path in a second time, causing stuttering of errors when they get presented to the user. This patch tries to cleanup a bunch of these errors. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* new "image" mount typeValentin Rothberg2020-10-29
| | | | | | | | | | | | | | Add a new "image" mount type to `--mount`. The source of the mount is the name or ID of an image. The destination is the path inside the container. Image mounts further support an optional `rw,readwrite` parameter which if set to "true" will yield the mount writable inside the container. Note that no changes are propagated to the image mount on the host (which in any case is read only). Mounts are overlay mounts. To support read-only overlay mounts, vendor a non-release version of Buildah. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Populate /etc/hosts file when run in a user namespaceDaniel J Walsh2020-10-07
| | | | | | | | | We do not populate the hostname field with the IP Address when running within a user namespace. Fixes https://github.com/containers/podman/issues/7490 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Remove excessive error wrappingKir Kolyshkin2020-10-05
| | | | | | | | | | | | | | | | | In case os.Open[File], os.Mkdir[All], ioutil.ReadFile and the like fails, the error message already contains the file name and the operation that fails, so there is no need to wrap the error with something like "open %s failed". While at it - replace a few places with os.Open, ioutil.ReadAll with ioutil.ReadFile. - replace errors.Wrapf with errors.Wrap for cases where there are no %-style arguments. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
* Fix up errors found by codespellDaniel J Walsh2020-09-11
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Merge pull request #7578 from giuseppe/join-userns-reuse-mappingsOpenShift Merge Robot2020-09-10
|\ | | | | libpod: read mappings when joining a container userns
| * libpod: read mappings when joining a container usernsGiuseppe Scrivano2020-09-10
| | | | | | | | | | | | | | | | | | when joining an existing container user namespace, read the existing mappings so the storage can be created with the correct ownership. Closes: https://github.com/containers/podman/issues/7547 Signed-off-by: Giuseppe Scrivano <giuseppe@scrivano.org>
* | rootless: support `podman network create` (CNI-in-slirp4netns)Akihiro Suda2020-09-09
|/ | | | | | | | | | | | | | | | | Usage: ``` $ podman network create foo $ podman run -d --name web --hostname web --network foo nginx:alpine $ podman run --rm --network foo alpine wget -O - http://web.dns.podman Connecting to web.dns.podman (10.88.4.6:80) ... <h1>Welcome to nginx!</h1> ... ``` See contrib/rootless-cni-infra for the design. Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
* fix apiv2 will create containers with incorrect commandszhangguanzhang2020-08-24
| | | | Signed-off-by: zhangguanzhang <zhangguanzhang@qq.com>
* volumes: do not recurse when chowningGiuseppe Scrivano2020-07-31
| | | | | | | | | keep the file ownership when chowning and honor the user namespace mappings. Closes: https://github.com/containers/podman/issues/7130 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* When chowning we should not follow symbolic linkDaniel J Walsh2020-07-27
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Add support for overlay volume mounts in podman.Qi Wang2020-07-20
| | | | | | | | Add support -v for overlay volume mounts in podman. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Signed-off-by: Qi Wang <qiwan@redhat.com>
* Preserve passwd on container restartMatthew Heon2020-07-15
| | | | | | | | | | | | | | | We added code to create a `/etc/passwd` file that we bind-mount into the container in some cases (most notably, `--userns=keep-id` containers). This, unfortunately, was not persistent, so user-added users would be dropped on container restart. Changing where we store the file should fix this. Further, we want to ensure that lookups of users in the container use the right /etc/passwd if we replaced it. There was already logic to do this, but it only worked for user-added mounts; it's easy enough to alter it to use our mounts as well. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Remove all instances of named return "err" from LibpodMatthew Heon2020-07-09
| | | | | | | | | | | | | | | | | This was inspired by https://github.com/cri-o/cri-o/pull/3934 and much of the logic for it is contained there. However, in brief, a named return called "err" can cause lots of code confusion and encourages using the wrong err variable in defer statements, which can make them work incorrectly. Using a separate name which is not used elsewhere makes it very clear what the defer should be doing. As part of this, remove a large number of named returns that were not used anywhere. Most of them were once needed, but are no longer necessary after previous refactors (but were accidentally retained). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Implement --sdnotify cmdline option to control sd-notify behaviorJoseph Gooch2020-07-06
| | | | | | | | | | | | | | | | | | | --sdnotify container|conmon|ignore With "conmon", we send the MAINPID, and clear the NOTIFY_SOCKET so the OCI runtime doesn't pass it into the container. We also advertise "ready" when the OCI runtime finishes to advertise the service as ready. With "container", we send the MAINPID, and leave the NOTIFY_SOCKET so the OCI runtime passes it into the container for initialization, and let the container advertise further metadata. This is the default, which is closest to the behavior podman has done in the past. The "ignore" option removes NOTIFY_SOCKET from the environment, so neither podman nor any child processes will talk to systemd. This removes the need for hardcoded CID and PID files in the command line, and the PIDFile directive, as the pid is advertised directly through sd-notify. Signed-off-by: Joseph Gooch <mrwizard@dok.org>
* move go module to v2Valentin Rothberg2020-07-06
| | | | | | | | | | | | | | | With the advent of Podman 2.0.0 we crossed the magical barrier of go modules. While we were able to continue importing all packages inside of the project, the project could not be vendored anymore from the outside. Move the go module to new major version and change all imports to `github.com/containers/libpod/v2`. The renaming of the imports was done via `gomove` [1]. [1] https://github.com/KSubedi/gomove Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* container: move volume chown after spec generationGiuseppe Scrivano2020-06-29
| | | | | | | | | move the chown for newly created volumes after the spec generation so the correct UID/GID are known. Closes: https://github.com/containers/libpod/issues/5698 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: volume copyup honors namespace mappingsGiuseppe Scrivano2020-06-29
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: specify mappings to the storageGiuseppe Scrivano2020-06-24
| | | | | | | | | | | | specify the mappings in the container configuration to the storage when creating the container so that the correct mappings can be configured. Regression introduced with Podman 2.0. Closes: https://github.com/containers/libpod/issues/6735 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Turn on More lintersDaniel J Walsh2020-06-15
| | | | | | | | | - misspell - prealloc - unparam - nakedret Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Ensure Conmon is alive before waiting for exit fileMatthew Heon2020-06-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This came out of a conversation with Valentin about systemd-managed Podman. He discovered that unit files did not properly handle cases where Conmon was dead - the ExecStopPost `podman rm --force` line was not actually removing the container, but interestingly, adding a `podman cleanup --rm` line would remove it. Both of these commands do the same thing (minus the `podman cleanup --rm` command not force-removing running containers). Without a running Conmon instance, the container process is still running (assuming you killed Conmon with SIGKILL and it had no chance to kill the container it managed), but you can still kill the container itself with `podman stop` - Conmon is not involved, only the OCI Runtime. (`podman rm --force` and `podman stop` use the same code to kill the container). The problem comes when we want to get the container's exit code - we expect Conmon to make us an exit file, which it's obviously not going to do, being dead. The first `podman rm` would fail because of this, but importantly, it would (after failing to retrieve the exit code correctly) set container status to Exited, so that the second `podman cleanup` process would succeed. To make sure the first `podman rm --force` succeeds, we need to catch the case where Conmon is already dead, and instead of waiting for an exit file that will never come, immediately set the Stopped state and remove an error that can be caught and handled. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Fix remote integration for healthchecksBrent Baude2020-05-20
| | | | | | the one remaining test that is still skipped do to missing exec function Signed-off-by: Brent Baude <bbaude@redhat.com>
* Fix lintMatthew Heon2020-05-14
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Remove exec sessions on container restartMatthew Heon2020-05-14
| | | | | | | | | | | | | With APIv2, we cannot guarantee that exec sessions will be removed cleanly on exit (Docker does not include an API for removing exec sessions, instead using a timer-based reaper which we cannot easily replicate). This is part 1 of a 2-part approach to providing a solution to this. This ensures that exec sessions will be reaped, at the very least, on container restart, which takes care of any that were not properly removed during the run of a container. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Cleanup OCI runtime before storageMatthew Heon2020-05-14
| | | | | | | | | Some runtimes (e.g. Kata containers) seem to object to having us unmount storage before the container is removed from the runtime. This is an easy fix (change the order of operations in cleanup) and seems to make more sense than the way we were doing things. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Fix SELinux functions names to not be repetitiveDaniel J Walsh2020-04-23
| | | | | | | Since functions are now in an selinux subpackage, they should not start with SELinux Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Move selinux labeling support from pkg/util to pkg/selinuxDaniel J Walsh2020-04-22
| | | | | | | The goal here is to make the package less heavy and not overload the pkg/util. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Add support for selecting kvm and systemd labelsDaniel J Walsh2020-04-15
| | | | | | | | | | | | In order to better support kata containers and systemd containers container-selinux has added new types. Podman should execute the container with an SELinux process label to match the container type. Traditional Container process : container_t KVM Container Process: containre_kvm_t PID 1 Init process: container_init_t Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* userns: support --userns=autoGiuseppe Scrivano2020-04-06
| | | | | | | automatically pick an empty range and create an user namespace for the container. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Add support for containers.confDaniel J Walsh2020-03-27
| | | | | | | vendor in c/common config pkg for containers.conf Signed-off-by: Qi Wang qiwan@redhat.com Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Attempt manual removal of CNI IP allocations on refreshMatthew Heon2020-03-19
| | | | | | | | | | | | | | We previously attempted to work within CNI to do this, without success. So let's do it manually, instead. We know where the files should live, so we can remove them ourselves instead. This solves issues around sudden reboots where containers do not have time to fully tear themselves down, and leave IP address allocations which, for various reasons, are not stored in tmpfs and persist through reboot. Fixes #5433 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add structure for new exec session tracking to DBMatthew Heon2020-03-18
| | | | | | | | | | | | | | | | | | | | | | | As part of the rework of exec sessions, we need to address them independently of containers. In the new API, we need to be able to fetch them by their ID, regardless of what container they are associated with. Unfortunately, our existing exec sessions are tied to individual containers; there's no way to tell what container a session belongs to and retrieve it without getting every exec session for every container. This adds a pointer to the container an exec session is associated with to the database. The sessions themselves are still stored in the container. Exec-related APIs have been restructured to work with the new database representation. The originally monolithic API has been split into a number of smaller calls to allow more fine-grained control of lifecycle. Support for legacy exec sessions has been retained, but in a deprecated fashion; we should remove this in a few releases. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Revert "exec: get the exit code from sync pipe instead of file"Matthew Heon2020-03-09
| | | | | | | | | This reverts commit 4b72f9e4013411208751df2a92ab9f322d4da5b2. Continues what began with revert of d3d97a25e8c87cf741b2e24ac01ef84962137106 in previous commit. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Fix spelling mistakes in code found by codespellDaniel J Walsh2020-03-07
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* exec: get the exit code from sync pipe instead of filePeter Hunt2020-03-03
| | | | | | | | Before, we were getting the exit code from the file, in which we waited an arbitrary amount of time (5 seconds) for the file, and segfaulted if we didn't find it. instead, we should be a bit more certain conmon has sent the exit code. Luckily, it sends the exit code along the sync pipe fd, so we can read it from there Adapt the ExecContainer interface to pass along a channel to get the pid and exit code from conmon, to be able to read both from the pipe Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Add basic deadlock detection for container start/removeMatthew Heon2020-02-24
| | | | | | | | | | | | | | | We can easily tell if we're going to deadlock by comparing lock IDs before actually taking the lock. Add a few checks for this in common places where deadlocks might occur. This does not yet cover pod operations, where detection is more difficult (and costly) due to the number of locks being involved being higher than 2. Also, add some error wrapping on the Podman side, so we can tell people to use `system renumber` when it occurs. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* populate resolv.conf with dnsname responses when in usernamespaceBrent Baude2020-02-20
| | | | | | | | when using usernamespace, dnsname respondes from cni were not making it into the containers /etc/resolv.conf because of a timing issue. this corrects that behavior. Fixes: #5256 Signed-off-by: Brent Baude <bbaude@redhat.com>
* Do not copy up when volume is not emptyMatthew Heon2020-02-12
| | | | | | | | | | | | | | | | | When Docker performs a copy up, it first verifies that the volume being copied into is empty; thus, for volumes that have been modified elsewhere (e.g. manually copying into then), the copy up will not be performed at all. Duplicate this behavior in Podman by checking if the volume is empty before copying. Furthermore, move setting copyup to false further up. This will prevent a potential race where copy up could happen more than once if Podman was killed after some files had been copied but before the DB was updated. This resolves CVE-2020-1726. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Tear down network when restarting containersMatthew Heon2020-02-02
| | | | | | | | | | | This makes restart a bit slower for root containers, but it does make it more consistent with `podman stop` and `podman start` on a container. Importantly, `podman restart` will now recreate firewall rules if they were somehow purged. Fixes #5051 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* 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>
* address review comments before mergebaude2020-01-10
| | | | Signed-off-by: baude <bbaude@redhat.com>
* Initial commit on compatible APIJhon Honce2020-01-10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Jhon Honce <jhonce@redhat.com> Create service command Use cd cmd/service && go build . $ systemd-socket-activate -l 8081 cmd/service/service & $ curl http://localhost:8081/v1.24/images/json Signed-off-by: Jhon Honce <jhonce@redhat.com> Correct Makefile Signed-off-by: Jhon Honce <jhonce@redhat.com> Two more stragglers Signed-off-by: Jhon Honce <jhonce@redhat.com> Report errors back as http headers Signed-off-by: Jhon Honce <jhonce@redhat.com> Split out handlers, updated output Output aligned to docker structures Signed-off-by: Jhon Honce <jhonce@redhat.com> Refactored routing, added more endpoints and types * Encapsulated all the routing information in the handler_* files. * Added more serviceapi/types, including podman additions. See Info Signed-off-by: Jhon Honce <jhonce@redhat.com> Cleaned up code, implemented info content * Move Content-Type check into serviceHandler * Custom 404 handler showing the url, mostly for debugging * Refactored images: better method names and explicit http codes * Added content to /info * Added podman fields to Info struct * Added Container struct Signed-off-by: Jhon Honce <jhonce@redhat.com> Add a bunch of endpoints containers: stop, pause, unpause, wait, rm images: tag, rmi, create (pull only) Signed-off-by: baude <bbaude@redhat.com> Add even more handlers * Add serviceapi/Error() to improve error handling * Better support for API return payloads * Renamed unimplemented to unsupported these are generic endpoints we don't intend to ever support. Swarm broken out since it uses different HTTP codes to signal that the node is not in a swarm. * Added more types * API Version broken out so it can be validated in the future Signed-off-by: Jhon Honce <jhonce@redhat.com> Refactor to introduce ServiceWriter Signed-off-by: Jhon Honce <jhonce@redhat.com> populate pods endpoints /libpod/pods/.. exists, kill, pause, prune, restart, remove, start, stop, unpause Signed-off-by: baude <bbaude@redhat.com> Add components to Version, fix Error body Signed-off-by: Jhon Honce <jhonce@redhat.com> Add images pull output, fix swarm routes * docker-py tests/integration/api_client_test.py pass 100% * docker-py tests/integration/api_image_test.py pass 4/16 + Test failures include services podman does not support Signed-off-by: Jhon Honce <jhonce@redhat.com> pods endpoint submission 2 add create and others; only top and stats is left. Signed-off-by: baude <bbaude@redhat.com> Update pull image to work from empty registry Signed-off-by: Jhon Honce <jhonce@redhat.com> pod create and container create first pass at pod and container create. the container create does not quite work yet but it is very close. pod create needs a partial rewrite. also broken off the DELETE (rm/rmi) to specific handler funcs. Signed-off-by: baude <bbaude@redhat.com> Add docker-py demos, GET .../containers/json * Update serviceapi/types to reflect libpod not podman * Refactored removeImage() to provide non-streaming return Signed-off-by: Jhon Honce <jhonce@redhat.com> create container part2 finished minimal config needed for create container. started demo.py for upcoming talk Signed-off-by: baude <bbaude@redhat.com> Stop server after honoring request * Remove casting for method calls * Improve WriteResponse() * Update Container API type to match docker API Signed-off-by: Jhon Honce <jhonce@redhat.com> fix namespace assumptions cleaned up namespace issues with libpod. Signed-off-by: baude <bbaude@redhat.com> wip Signed-off-by: baude <bbaude@redhat.com> Add sliding window when shutting down server * Added a Timeout rather than closing down service on each call * Added gorilla/schema dependency for Decode'ing query parameters * Improved error handling * Container logs returned and multiplexed for stdout and stderr * .../containers/{name}/logs?stdout=True&stderr=True * Container stats * .../containers/{name}/stats Signed-off-by: Jhon Honce <jhonce@redhat.com> Improve error handling * Add check for at least one std stream required for /containers/{id}/logs * Add check for state in /containers/{id}/top * Fill in more fields for /info * Fixed error checking in service start code Signed-off-by: Jhon Honce <jhonce@redhat.com> get rest of image tests for pass Signed-off-by: baude <bbaude@redhat.com> linting our content Signed-off-by: baude <bbaude@redhat.com> more linting Signed-off-by: baude <bbaude@redhat.com> more linting Signed-off-by: baude <bbaude@redhat.com> pruning Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]apiv2 pods migrate from using args in the url to using a json struct in body for pod create. Signed-off-by: baude <bbaude@redhat.com> fix handler_images prune prune's api changed slightly to deal with filters. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]enabled base container create tests enabling the base container create tests which allow us to get more into the stop, kill, etc tests. many new tests now pass. Signed-off-by: baude <bbaude@redhat.com> serviceapi errors: append error message to API message I dearly hope this is not breaking any other tests but debugging "Internal Server Error" is not helpful to any user. In case, it breaks tests, we can rever the commit - that's why it's a small one. Signed-off-by: Valentin Rothberg <rothberg@redhat.com> serviceAPI: add containers/prune endpoint Signed-off-by: Valentin Rothberg <rothberg@redhat.com> add `service` make target Also remove the non-functional sub-Makefile. Signed-off-by: Valentin Rothberg <rothberg@redhat.com> add make targets for testing the service * `sudo make run-service` for running the service. * `DOCKERPY_TEST="tests/integration/api_container_test.py::ListContainersTest" \ make run-docker-py-tests` for running a specific tests. Run all tests by leaving the env variable empty. Signed-off-by: Valentin Rothberg <rothberg@redhat.com> Split handlers and server packages The files were split to help contain bloat. The api/server package will contain all code related to the functioning of the server while api/handlers will have all the code related to implementing the end points. api/server/register_* will contain the methods for registering endpoints. Additionally, they will have the comments for generating the swagger spec file. See api/handlers/version.go for a small example handler, api/handlers/containers.go contains much more complex handlers. Signed-off-by: Jhon Honce <jhonce@redhat.com> [CI:DOCS]enabled more tests Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]libpod endpoints small refactor for libpod inclusion and began adding endpoints. Signed-off-by: baude <bbaude@redhat.com> Implement /build and /events * Include crypto libraries for future ssh work Signed-off-by: Jhon Honce <jhonce@redhat.com> [CI:DOCS]more image implementations convert from using for to query structs among other changes including new endpoints. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]add bindings for golang Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]add volume endpoints for libpod create, inspect, ls, prune, and rm Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]apiv2 healthcheck enablement wire up container healthchecks for the api. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]Add mount endpoints via the api, allow ability to mount a container and list container mounts. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]Add search endpoint add search endpoint with golang bindings Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]more apiv2 development misc population of methods, etc Signed-off-by: baude <bbaude@redhat.com> rebase cleanup and epoch reset Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]add more network endpoints also, add some initial error handling and convenience functions for standard endpoints. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]use helper funcs for bindings use the methods developed to make writing bindings less duplicative and easier to use. Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]add return info for prereview begin to add return info and status codes for errors so that we can review the apiv2 Signed-off-by: baude <bbaude@redhat.com> [CI:DOCS]first pass at adding swagger docs for api Signed-off-by: baude <bbaude@redhat.com>
* Ensure SizeRw is shown when a user does 'inspect --size -t container'.Neville Cain2019-12-27
| | | | | | | | | | | | | | Currently, if a user requests the size on a container (inspect --size -t container), the SizeRw does not show up if the value is 0. It's because InspectContainerData is defined as int64 and there is an omit when empty. We do want to display it even if the value is empty. I have changed the type of SizeRw to be a pointer to an int64 instead of an int64. It will allow us todistinguish the empty value to the missing value. I updated the test "podman inspect container with size" to ensure we check thatSizeRw is displayed correctly. Closes #4744 Signed-off-by: NevilleC <neville.cain@qonto.eu>
* if container is not in a pid namespace, stop all processesDaniel J Walsh2019-12-19
| | | | | | | | | When a container is in a PID namespace, it is enought to send the stop signal to the PID 1 of the namespace, only send signals to all processes in the container when the container is not in a pid namespace. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* 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>
* Add ContainerStateRemovingMatthew Heon2019-11-19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When Libpod removes a container, there is the possibility that removal will not fully succeed. The most notable problems are storage issues, where the container cannot be removed from c/storage. When this occurs, we were faced with a choice. We can keep the container in the state, appearing in `podman ps` and available for other API operations, but likely unable to do any of them as it's been partially removed. Or we can remove it very early and clean up after it's already gone. We have, until now, used the second approach. The problem that arises is intermittent problems removing storage. We end up removing a container, failing to remove its storage, and ending up with a container permanently stuck in c/storage that we can't remove with the normal Podman CLI, can't use the name of, and generally can't interact with. A notable cause is when Podman is hit by a SIGKILL midway through removal, which can consistently cause `podman rm` to fail to remove storage. We now add a new state for containers that are in the process of being removed, ContainerStateRemoving. We set this at the beginning of the removal process. It notifies Podman that the container cannot be used anymore, but preserves it in the DB until it is fully removed. This will allow Remove to be run on these containers again, which should successfully remove storage if it fails. Fixes #3906 Signed-off-by: Matthew Heon <mheon@redhat.com>
* Also delete winsz fifoPeter Hunt2019-11-15
| | | | | | In conmon 2.0.3, we add another fifo to handle window resizing. This needs to be cleaned up for commands like restore, where the same path is used. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* Add ensureState helper for checking container stateMatthew Heon2019-10-28
| | | | | | | | | | | | | | | | We have a lot of checks for container state scattered throughout libpod. Many of these need to ensure the container is in one of a given set of states so an operation may safely proceed. Previously there was no set way of doing this, so we'd use unique boolean logic for each one. Introduce a helper to standardize state checks. Note that this is only intended to replace checks for multiple states. A simple check for one state (ContainerStateRunning, for example) should remain a straight equality, and not use this new helper. Signed-off-by: Matthew Heon <mheon@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>
generated by cgit v1.2.3-54-g00ecf (git 2.39.0) at 2024-11-14 20:54:52 +0000