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path: root/libpod/boltdb_state_internal.go
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* 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>
* 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>
* 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>
* rm: add containers eviction with `rm --force`Marco Vedovati2019-09-25
| | | | | | | | | Add ability to evict a container when it becomes unusable. This may happen when the host setup changes after a container creation, making it impossible for that container to be used or removed. Evicting a container is done using the `rm --force` command. Signed-off-by: Marco Vedovati <mvedovati@suse.com>
* Add ability for volumes with options to mount/umountMatthew Heon2019-09-05
| | | | | | | | | | | | | When volume options and the local volume driver are specified, the volume is intended to be mounted using the 'mount' command. Supported options will be used to volume the volume before the first container using it starts, and unmount the volume after the last container using it dies. This should work for any local filesystem, though at present I've only tested with tmpfs and btrfs. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add volume stateMatthew Heon2019-09-05
| | | | | | | | | | | | We need to be able to track the number of times a volume has been mounted for tmpfs/nfs/etc volumes. As such, we need a mutable state for volumes. Add one, with the expected update/save methods in both states. There is backwards compat here, in that older volumes without a state will still be accepted. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Re-add locks to volumes.Matthew Heon2019-08-28
| | | | | | | | | | This will require a 'podman system renumber' after being applied to get lock numbers for existing volumes. Add the DB backend code for rewriting volume configs and use it for updating lock numbers as part of 'system renumber'. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* first pass of corrections for golangci-lintbaude2019-07-10
| | | | Signed-off-by: baude <bbaude@redhat.com>
* code cleanupbaude2019-07-08
| | | | | | clean up code identified as problematic by golands inspection Signed-off-by: baude <bbaude@redhat.com>
* remove libpod from mainbaude2019-06-25
| | | | | | | | | | | | | the compilation demands of having libpod in main is a burden for the remote client compilations. to combat this, we should move the use of libpod structs, vars, constants, and functions into the adapter code where it will only be compiled by the local client. this should result in cleaner code organization and smaller binaries. it should also help if we ever need to compile the remote client on non-Linux operating systems natively (not cross-compiled). Signed-off-by: baude <bbaude@redhat.com>
* Merge pull request #3378 from mheon/multiple_runtimesOpenShift Merge Robot2019-06-21
|\ | | | | Begin adding support for multiple OCI runtimes
| * Handle containers whose OCIRuntime fields are pathsMatthew Heon2019-06-20
| | | | | | | | | | | | | | Try and locate the right runtime by using the basename of the path. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
| * Begin adding support for multiple OCI runtimesMatthew Heon2019-06-19
| | | | | | | | | | | | | | | | | | | | | | | | | | Allow Podman containers to request to use a specific OCI runtime if multiple runtimes are configured. This is the first step to properly supporting containers in a multi-runtime environment. The biggest changes are that all OCI runtimes are now initialized when Podman creates its runtime, and containers now use the runtime requested in their configuration (instead of always the default runtime). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | Make configuration validation not require a DB commitMatthew Heon2019-06-20
|/ | | | | | | If there are missing fields, we still require a commit, but that should not happen often. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Update vendor of buildah and containers/imagesDaniel J Walsh2019-05-20
| | | | | | | | | Mainly add support for podman build using --overlay mounts. Updates containers/image also adds better support for new registries.conf file. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Switch Libpod over to new explicit named volumesMatthew Heon2019-04-04
| | | | | | | | | | | | | This swaps the previous handling (parse all volume mounts on the container and look for ones that might refer to named volumes) for the new, explicit named volume lists stored per-container. It also deprecates force-removing volumes that are in use. I don't know how we want to handle this yet, but leaving containers that depend on a volume that no longer exists is definitely not correct. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* vendor buildah, image, storage, cniValentin Rothberg2019-03-28
| | | | Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Validate VolumePath against DB configurationMatthew Heon2019-02-26
| | | | | | | | | If this doesn't match, we end up not being able to access named volumes mounted into containers, which is bad. Use the same validation that we use for other critical paths to ensure this one also matches. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Remove locks from volumesMatthew Heon2019-02-21
| | | | | | | | | | | | | | | | | | | I was looking into why we have locks in volumes, and I'm fairly convinced they're unnecessary. We don't have a state whose accesses we need to guard with locks and syncs. The only real purpose for the lock was to prevent concurrent removal of the same volume. Looking at the code, concurrent removal ought to be fine with a bit of reordering - one or the other might fail, but we will successfully evict the volume from the state. Also, remove the 'prune' bool from RemoveVolume. None of our other API functions accept it, and it only served to toggle off more verbose error messages. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Move all libpod/ JSON references over to jsoniterMatthew Heon2019-01-10
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Remove runtime lockDir and add in-memory lock managerMatthew Heon2019-01-04
| | | | | | | | | Remove runtime's lockDir as it is no longer needed after the lock rework. Add a trivial in-memory lock manager for unit testing Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Convert pods to SHM locksMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Convert containers to SHM lockingMatthew Heon2019-01-04
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* condition fixed for adding volume to boltdb.Kunal Kushwaha2018-12-13
| | | | Signed-off-by: Kunal Kushwaha <kushwaha_kunal_v7@lab.ntt.co.jp>
* Add "podman volume" commandumohnani82018-12-06
| | | | | | | | | | | | | | | Add support for podman volume and its subcommands. The commands supported are: podman volume create podman volume inspect podman volume ls podman volume rm podman volume prune This is a tool to manage volumes used by podman. For now it only handle named volumes, but eventually it will handle all volumes used by podman. Signed-off-by: umohnani8 <umohnani@redhat.com>
* Use runtime lockDir in BoltDB stateMatthew Heon2018-12-04
| | | | | | | | | | | | | Instead of storing the runtime's file lock dir in the BoltDB state, refer to the runtime inside the Bolt state instead, and use the path stored in the runtime. This is necessary since we moved DB initialization very far up in runtime init, before the locks dir is properly initialized (and it must happen before the locks dir can be created, as we use the DB to retrieve the proper path for the locks dir now). Signed-off-by: Matthew Heon <mheon@redhat.com>
* Add better descriptions for validation errors in DBMatthew Heon2018-12-03
| | | | | | | | | When validating fields against the DB, report more verbosely the name of the field being validated if it fails. Specifically, add the name used in config files, so people will actually know what to change it errors happen. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Add ability to retrieve runtime configuration from DBMatthew Heon2018-12-02
| | | | | | | | | | When we create a Libpod database, we store a number of runtime configuration fields in it. If we can retrieve those, we can use them to configure the runtime to match the DB instead of inbuilt defaults, helping to ensure that we don't error in cases where our compiled-in defaults changed. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Do not fetch pod and ctr State on retrieval in BoltMatthew Heon2018-07-31
| | | | | | | | | | | | | | | | | It's not necessary to fill in state immediately, as we'll be overwriting it on any API call accessing it thanks to syncContainer(). It is also causing races when we fetch it without holding the container lock (which syncContainer() does). As such, just don't retrieve the state on initial pull from the database with Bolt. Also, refactor some Linux-specific netns handling functions out of container_internal_linux.go into boltdb_linux.go. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #1186 Approved by: rhatdan
* Use the Linux version BoltState.getContainerFromDB on all platforms.Miloslav Trmač2018-07-26
| | | | | | | | | | | | | | | This just muves the Linux implementation, unchanged, to the platform-agnostic file. Should not change behavior on Linux. On non-Linux platforms, reading containers from BoltDB now works (and rejects containers with namespace data). The checkRuntimeConfig validation ensures that each BoltDB database is only used on one platform, so network namespaces should never exist in non-Linux BoltDB files. Signed-off-by: Miloslav Trmač <mitr@redhat.com> Closes: #1115 Approved by: rhatdan
* Add a mutex to BoltDB state to prevent lock issuesMatthew Heon2018-07-25
| | | | | | | | | | | | | | Per https://www.sqlite.org/src/artifact/c230a7a24?ln=994-1081, POSIX file advisory locks are unsafe to use within a single process if multiple file descriptors are open for the same file. Unfortunately, this has a strong potential to happen for multithreaded usage of libpod, and could result in DB corruption. To prevent this, wrap all access to BoltDB within a single libpod instance in a mutex to ensure concurrent access cannot occur. Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Enforce namespace checks on container addMatthew Heon2018-07-24
| | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Untested implementation of namespaced BoltDB accessMatthew Heon2018-07-24
| | | | | | | | | | | All BoltDB access and update functions now understand namespaces. Accessing containers outside of your namespace will produce errors, except for Lookup and All functions, which will perform their tasks only on containers within your namespace. The "" namespace remains a reserved, no-restrictions namespace. Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Add constraint that dependencies must be in the same nsMatthew Heon2018-07-24
| | | | | | | Dependency containers must be in the same namespace, to ensure there are never problems resolving a dependency. Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* Add namespaces and initial constraints to databaseMatthew Heon2018-07-24
| | | | | | | | Add basic awareness of namespaces to the database. As part of this, add constraints so containers can only be added to pods in the same namespace. Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
* more changes to compile darwinbaude2018-07-05
| | | | | | | | | | | | | | | | this should represent the last major changes to get darwin to **compile**. again, the purpose here is to get darwin to compile so that we can eventually implement a ci task that would protect against regressions for darwin compilation. i have left the manual darwin compilation largely static still and in fact now only interject (manually) two build tags to assist with the build. trevor king has great ideas on how to make this better and i will defer final implementation of those to him. Signed-off-by: baude <bbaude@redhat.com> Closes: #1047 Approved by: rhatdan
* libpod/container: Replace containerState* with containerPlatformStateW. Trevor King2018-07-05
| | | | | | | | | | | | | | | This way we don't need to stub in structures for other OSes (e.g. the Darwin stub in a Linux-only file). Matthew was concerned about errors unmarshalling, say, a Linux state object on a Windows box [1], but we can address that in checks when loading the database [2]. [1]: https://github.com/projectatomic/libpod/pull/1015#discussion_r198649043 [2]: https://github.com/projectatomic/libpod/pull/1015#discussion_r198802956 Signed-off-by: W. Trevor King <wking@tremily.us> Closes: #1033 Approved by: mheon
* Returning joining namespace error should not be fatalDaniel J Walsh2018-06-29
| | | | | | | | | | | | | | | | | | | | | | I got my database state in a bad way by killing a hanging container. It did not setup the network namespace correctly listing/remove bad containers becomes impossible. podman run alpine/nginx ^c got me in this state. I got into a state in the database where podman ps -a was returning errors and I could not get out of it, Makeing joining the network namespace a non fatal error fixes the issue. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com> Closes: #918 Approved by: mheon
* Spell check strings and commentsJhon Honce2018-05-25
| | | | | | | Signed-off-by: Jhon Honce <jhonce@redhat.com> Closes: #831 Approved by: rhatdan
* Add pod stateMatthew Heon2018-05-17
| | | | | | | | | | Add a mutable state to pods, and database backend sutable for modifying and updating said state. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #784 Approved by: rhatdan
* Ensure container dependencies are part of the same podMatthew Heon2018-03-29
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #558 Approved by: rhatdan
* Prevent ctrs not in pods from depending on pod ctrsMatthew Heon2018-03-29
| | | | | | | | | | | | | Containers in pods cannot depend on containers outside of the same pod. Make the reverse true as well - containers not in pods cannot depend on containers in pods. This greatly simplifies our dependency handling, as we can guarantee that removing a pod will not encounter dependency issues. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #558 Approved by: rhatdan
* Fix checks for configuration keys in the DBMatthew Heon2018-03-01
| | | | | | | | | | | | | | | | Currently, we will error if the DB is configured with the default containers/storage config, and then opened by a libpod which has explicitly set the defaults. This is due to us using an empty config by default (to tell c/storage to use its defaults). This patch changes our handling so that unset storage config (using the default) and explicitly setting the defaults are both compatible. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #423 Approved by: baude
* Add buckets for all containers and all podsMatthew Heon2018-02-12
| | | | | | | | | | | Now, we don't need to use the global ID registry to iterate - we can iterate only through containers or only through pods, without having to iterate through both. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Containers in a pod can only join namespaces in that podMatthew Heon2018-02-12
| | | | | | | | | | | | | | This solves some dependency problems in the state, and makes sense from a design standpoint. Containers not in a pod can still depend on the namespaces of containers joined to a pod, which we might also want to change in the future. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Fix gofmt and lintMatthew Heon2018-02-12
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Refactor Pod to use a Config structMatthew Heon2018-02-12
| | | | | | | | | | | | This allows us to JSON it and stuff it in the DB - previously, all pod fields were private, so JSON couldn't encode them. This allows us to keep all pod fields private by having a substruct with public fields. Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Add pod functions to BoltDB stateMatthew Heon2018-02-12
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Add pod bucketsMatthew Heon2018-02-12
| | | | | | | Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
* Add implementation for BoltDB-backed stateMatthew Heon2018-02-12
Signed-off-by: Matthew Heon <matthew.heon@gmail.com> Closes: #184 Approved by: baude
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