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path: root/libpod/runtime.go
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* rootless cni without infra containerPaul Holzinger2021-04-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of creating an extra container create a network and mount namespace inside the podman user namespace. This ns is used to for rootless cni operations. This helps to align the rootless and rootful network code path. If we run as rootless we just have to set up a extra net ns and initialize slirp4netns in it. The ocicni lib will be called in that net ns. This design allows allows easier maintenance, no extra container with pause processes, support for rootless cni with --uidmap and possibly more. The biggest problem is backwards compatibility. I don't think live migration can be possible. If the user reboots or restart all cni containers everything should work as expected again. The user is left with the rootless-cni-infa container and image but this can safely be removed. To make the existing cni configs work we need execute the cni plugins in a extra mount namespace. This ensures that we can safely mount over /run and /var which have to be writeable for the cni plugins without removing access to these files by the main podman process. One caveat is that we need to keep the netns files at `XDG_RUNTIME_DIR/netns` accessible. `XDG_RUNTIME_DIR/rootless-cni/{run,var}` will be mounted to `/{run,var}`. To ensure that we keep the netns directory we bind mount this relative to the new root location, e.g. XDG_RUNTIME_DIR/rootless-cni/run/user/1000/netns before we mount the run directory. The run directory is mounted recursive, this makes the netns directory at the same path accessible as before. This also allows iptables-legacy to work because /run/xtables.lock is now writeable. Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* bump go module to v3Valentin Rothberg2021-02-22
| | | | | | | | | We missed bumping the go module, so let's do it now :) * Automated go code with github.com/sirkon/go-imports-rename * Manually via `vgrep podman/v2` the rest Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Do not reset storage when running inside of a containerDaniel J Walsh2021-02-16
| | | | | | | | | | | | | | | | | | | | | | | | Currently if the host shares container storage with a container running podman, the podman inside of the container resets the storage on the host. This can cause issues on the host, as well as causes the podman command running the container, to fail to unmount /dev/shm. podman run -ti --rm --privileged -v /var/lib/containers:/var/lib/containers quay.io/podman/stable podman run alpine echo hello * unlinkat /var/lib/containers/storage/overlay-containers/a7f3c9deb0656f8de1d107e7ddff2d3c3c279c11c1635f233a0bffb16051fb2c/userdata/shm: device or resource busy * unlinkat /var/lib/containers/storage/overlay-containers/a7f3c9deb0656f8de1d107e7ddff2d3c3c279c11c1635f233a0bffb16051fb2c/userdata/shm: device or resource busy Since podman is volume mounting in the graphroot, it will add a flag to /run/.containerenv to tell podman inside of container whether to reset storage or not. Since the inner podman is running inside of the container, no reason to assume this is a fresh reboot, so if "container" environment variable is set then skip reset of storage. Also added tests to make sure /run/.containerenv is runnig correctly. Fixes: https://github.com/containers/podman/issues/9191 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Enable whitespace linterPaul Holzinger2021-02-11
| | | | | | | | Use the whitespace linter and fix the reported problems. [NO TESTS NEEDED] Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* Implement SecretsAshley Cui2021-02-09
| | | | | | | | | | | Implement podman secret create, inspect, ls, rm Implement podman run/create --secret Secrets are blobs of data that are sensitive. Currently, the only secret driver supported is filedriver, which means creating a secret stores it in base64 unencrypted in a file. After creating a secret, a user can use the --secret flag to expose the secret inside the container at /run/secrets/[secretname] This secret will not be commited to an image on a podman commit Signed-off-by: Ashley Cui <acui@redhat.com>
* Ensure shutdown handler access is syncronizedMatthew Heon2021-01-25
| | | | | | | | | | | | | | There was a potential race where two handlers could be added at the same time. Go Maps are not thread-safe, so that could do unpleasant things. Add a mutex to keep things safe. Also, swap the order or Register and Start for the handlers in Libpod runtime created. As written, there was a small gap between Start and Register where SIGTERM/SIGINT would be completely ignored, instead of stopping Podman. Swapping the two closes this gap. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Initial implementation of volume pluginsMatthew Heon2021-01-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This implements support for mounting and unmounting volumes backed by volume plugins. Support for actually retrieving plugins requires a pull request to land in containers.conf and then that to be vendored, and as such is not yet ready. Given this, this code is only compile tested. However, the code for everything past retrieving the plugin has been written - there is support for creating, removing, mounting, and unmounting volumes, which should allow full functionality once the c/common PR is merged. A major change is the signature of the MountPoint function for volumes, which now, by necessity, returns an error. Named volumes managed by a plugin do not have a mountpoint we control; instead, it is managed entirely by the plugin. As such, we need to cache the path in the DB, and calls to retrieve it now need to access the DB (and may fail as such). Notably absent is support for SELinux relabelling and chowning these volumes. Given that we don't manage the mountpoint for these volumes, I am extremely reluctant to try and modify it - we could easily break the plugin trying to chown or relabel it. Also, we had no less than *5* separate implementations of inspecting a volume floating around in pkg/infra/abi and pkg/api/handlers/libpod. And none of them used volume.Inspect(), the only correct way of inspecting volumes. Remove them all and consolidate to using the correct way. Compat API is likely still doing things the wrong way, but that is an issue for another day. Fixes #4304 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Do not error on installing duplicate shutdown handlerMatthew Heon2020-12-07
| | | | | | | | | | | | | | Installing a duplicate shutdown handler fails, but if a handler with the same name is already present, we should be set to go. There's no reason to print a user-facing error about it. This comes up almost nowhere because Podman never makes more than one Libpod runtime, but there is one exception (`system reset`) and the error messages, while harmless, were making people very confused (we got several bug reports that `system reset` was nonfunctional). Signed-off-by: Matthew Heon <mheon@redhat.com>
* Drop default log-level from error to warnDaniel J Walsh2020-12-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Our users are missing certain warning messages that would make debugging issues with Podman easier. For example if you do a podman build with a Containerfile that contains the SHELL directive, the Derective is silently ignored. If you run with the log-level warn you get a warning message explainging what happened. $ podman build --no-cache -f /tmp/Containerfile1 /tmp/ STEP 1: FROM ubi8 STEP 2: SHELL ["/bin/bash", "-c"] STEP 3: COMMIT --> 7a207be102a 7a207be102aa8993eceb32802e6ceb9d2603ceed9dee0fee341df63e6300882e $ podman --log-level=warn build --no-cache -f /tmp/Containerfile1 /tmp/ STEP 1: FROM ubi8 STEP 2: SHELL ["/bin/bash", "-c"] STEP 3: COMMIT WARN[0000] SHELL is not supported for OCI image format, [/bin/bash -c] will be ignored. Must use `docker` format --> 7bd96fd25b9 7bd96fd25b9f755d8a045e31187e406cf889dcf3799357ec906e90767613e95f These messages will no longer be lost, when we default to WARNing level. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Use Libpod tmpdir for pause pathMatthew Heon2020-12-02
| | | | | | | | | | | | | | | | | | | | | Previously, we always computed pause path from the Rootless runtime directory. Problem: this does not match the behavior of Libpod when the directory changes. Libpod will continue to use the previous directory, cached in the database; Pause pidfiles will swap to the new path. This is problematic when the directory needs to exist to write the pidfile, and Libpod is what creates the directory. There are two potential solutions - allow the pause pidfile to move and just make the directory when we want to write it, or use the cached Libpod paths for a guaranteed location. This patch does the second, because it seems safer - we will never miss a previously-existing pidfile because the location is now consistent. Fixes #8539 Signed-off-by: Matthew Heon <mheon@redhat.com>
* runtime: set XDG_* env variables if missingGiuseppe Scrivano2020-11-27
| | | | | | | | regression introduced when moving to Podman 2.0. Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1877228 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Merge pull request #7126 from mheon/fix_missing_ociruntimeOpenShift Merge Robot2020-10-20
|\ | | | | Fix missing OCI Runtime
| * When given OCI runtime by path, use path as nameMatthew Heon2020-10-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Say I start a container with the flag `--runtime /usr/local/sbin/crun`. I then stop the container, and restart it without the flag. We previously stored the runtime in use by a container only by basename when given a path, so the container only knows that it's using the `crun` OCI runtime - and on being restarted without the flag, it will use the system crun, not my special crun build. Using the full path as the name in these cases ensures we will still use the correct runtime, even on subsequent runs of Podman. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | Enforce LIFO ordering for shutdown handlersMatthew Heon2020-10-13
| | | | | | | | | | | | | | | | | | | | | | This allows us to run both the Libpod and Server handlers at the same time without unregistering one. Also, pass the signal that killed us into the handlers, in case they want to use it to determine what to do (e.g. what exit code to set). Signed-off-by: Matthew Heon <mheon@redhat.com>
* | Enable masking stop signals within container creationMatthew Heon2020-10-12
|/ | | | | | | | | | | | | | | | | Expand the use of the Shutdown package such that we now use it to handle signals any time we run Libpod. From there, add code to container creation to use the Inhibit function to prevent a shutdown from occuring during the critical parts of container creation. We also need to turn off signal handling when --sig-proxy is invoked - we don't want to catch the signals ourselves then, but instead to forward them into the container via the existing sig-proxy handler. Fixes #7941 Signed-off-by: Matthew Heon <mheon@redhat.com>
* Lowercase some errorsKir Kolyshkin2020-10-05
| | | | | | | | | | | | | | | | | | | | | This commit is courtesy of ``` for f in $(git ls-files *.go | grep -v ^vendor/); do \ sed -i 's/\(errors\..*\)"Error /\1"error /' $f; done for f in $(git ls-files *.go | grep -v ^vendor/); do \ sed -i 's/\(errors\..*\)"Failed to /\1"failed to /' $f; done ``` etc. Self-reviewed using `git diff --word-diff`, found no issues. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.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>
* Add global options --runtime-flagsQi Wang2020-09-04
| | | | | | Add global options --runtime-flags for setting options to container runtime. Signed-off-by: Qi Wang <qiwan@redhat.com>
* Support sighup reload configuration filesQi Wang2020-08-18
| | | | | | Support podman service sighup reload configuration files(containers.conf, registries.conf, storage.conf). Signed-off-by: Qi Wang <qiwan@redhat.com>
* Unconditionally retrieve pod names via APIMatthew Heon2020-08-10
| | | | | | | | | | | | | | | | | | The ListContainers API previously had a Pod parameter, which determined if pod name was returned (but, notably, not Pod ID, which was returned unconditionally). This was fairly confusing, so we decided to deprecate/remove the parameter and return it unconditionally. To do this without serious performance implications, we need to avoid expensive JSON decodes of pod configuration in the DB. The way our Bolt tables are structured, retrieving name given ID is actually quite cheap, but we did not expose this via the Libpod API. Add a new GetName API to do this. Fixes #7214 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Switch references from libpod.conf to containers.confDaniel J Walsh2020-07-20
| | | | 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>
* 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>
* 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>
* Turn on More lintersDaniel J Walsh2020-06-15
| | | | | | | | | - misspell - prealloc - unparam - nakedret Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* compat handlers: add X-Registry-Auth header supportValentin Rothberg2020-05-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Support the `X-Registry-Auth` http-request header. * The content of the header is a base64 encoded JSON payload which can either be a single auth config or a map of auth configs (user+pw or token) with the corresponding registries being the keys. Vanilla Docker, projectatomic Docker and the bindings are transparantly supported. * Add a hidden `--registries-conf` flag. Buildah exposes the same flag, mostly for testing purposes. * Do all credential parsing in the client (i.e., `cmd/podman`) pass the username and password in the backend instead of unparsed credentials. * Add a `pkg/auth` which handles most of the heavy lifting. * Go through the authentication-handling code of most commands, bindings and endpoints. Migrate them to the new code and fix issues as seen. A final evaluation and more tests is still required *after* this change. * The manifest-push endpoint is missing certain parameters and should use the ABI function instead. Adding auth-support isn't really possible without these parts working. * The container commands and endpoints (i.e., create and run) have not been changed yet. The APIs don't yet account for the authfile. * Add authentication tests to `pkg/bindings`. Fixes: #6384 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Fix handling of overridden paths from databaseDaniel J Walsh2020-05-08
| | | | | | | | | | | | | | If the first time you run podman in a user account you do a su - USER, and the second time, you run as the logged in USER podman fails, because it is not handling the tmpdir definition in the database. This PR fixes this problem. vendor containers/common v0.11.1 This should fix a couple of issues we have seen in podman 1.9.1 with handling of libpod.conf. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* manifest create,add,inspectQi Wang2020-04-22
| | | | | | Implememts manifest subcommands create, add, inspect. Signed-off-by: Qi Wang <qiwan@redhat.com>
* Merge pull request #5690 from rhatdan/selinuxOpenShift Merge Robot2020-04-16
|\ | | | | Add support for selecting kvm and systemd labels
| * 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>
* | Fix up SELinux labelingDaniel J Walsh2020-04-15
|/ | | | | | SELinux label options processing fixes, should allow system tests to pass. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* refactor infoBrent Baude2020-04-06
| | | | | | the current implementation of info, while typed, is very loosely done so. we need stronger types for our apiv2 implmentation and bindings. Signed-off-by: Brent Baude <bbaude@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>
* 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>
* fix lint - drop else blockValentin Rothberg2020-01-08
| | | | Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* runtime.go: show registries data and search tableJosé Guilherme Vanz2019-12-13
| | | | | | | Update podman info command to show the registries data and the search table. Signed-off-by: José Guilherme Vanz <jvanz@jvanz.com>
* runtime.go: show search table in podman infoJosé Guilherme Vanz2019-12-12
| | | | | | | Updates the podman info command to show registries from v1 config file in the search table format. Signed-off-by: José Guilherme Vanz <jvanz@jvanz.com>
* podman: mirror informationJosé Guilherme Vanz2019-12-12
| | | | | | | | Updates the podman info command to show the mirror information Issue https://github.com/containers/libpod/issues/4553 Signed-off-by: José Guilherme Vanz <jvanz@jvanz.com>
* Ensure volumes reacquire locks on state refreshMatthew Heon2019-12-02
| | | | | | | | | | | | | | | | | | | | | | | | After a restart, pods and containers both run a refresh() function to prepare to run after a reboot. Until now, volumes have not had a similar function, because they had no per-boot setup to perform. Unfortunately, this was not noticed when in-memory locking was introduced to volumes. The refresh() routine is, among other things, responsible for ensuring that locks are reserved after a reboot, ensuring they cannot be taken by a freshly-created container, pod, or volume. If this reservation is not done, we can end up with two objects using the same lock, potentially needing to lock each other for some operations - classic recipe for deadlocks. Add a refresh() function to volumes to perform lock reservation and ensure it is called as part of overall refresh(). Fixes #4605 Fixes #4621 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* 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>
* bump containers/image to v5.0.0, buildah to v1.11.4Nalin Dahyabhai2019-10-29
| | | | | | | | | Move to containers/image v5 and containers/buildah to v1.11.4. Replace an equality check with a type assertion when checking for a docker.ErrUnauthorizedForCredentials in `podman login`. Signed-off-by: Nalin Dahyabhai <nalin@redhat.com>
* Merge pull request #3792 from haircommander/minimum-conmonOpenShift Merge Robot2019-10-29
|\ | | | | require conmon v2.0.1
| * require conmon v2.0.1Peter Hunt2019-10-28
| | | | | | | | Signed-off-by: Peter Hunt <pehunt@redhat.com>
| * require conmon v2.0.0Peter Hunt2019-10-28
| | | | | | | | Signed-off-by: Peter Hunt <pehunt@redhat.com>
* | Merge pull request #4228 from giuseppe/detect-no-systemd-sessionOpenShift Merge Robot2019-10-24
|\ \ | | | | | | rootless: detect no system session with --cgroup-manager=systemd
| * | rootless: detect no system session with --cgroup-manager=systemdGiuseppe Scrivano2019-10-23
| |/ | | | | | | | | | | | | if the cgroup manager is set to systemd, detect if dbus is available, otherwise fallback to --cgroup-manager=cgroupfs. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | Merge pull request #4309 from giuseppe/write-storage-overridesOpenShift Merge Robot2019-10-21
|\ \ | |/ |/| rootless: write storage overrides to the conf file
| * rootless: write storage overrides to the conf fileGiuseppe Scrivano2019-10-21
| | | | | | | | | | | | | | | | | | make sure the user overrides are stored in the configuration file when first created. Closes: https://github.com/containers/libpod/issues/2659 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* | rootless: do not enable lingering modeGiuseppe Scrivano2019-10-17
|/ | | | | | | | do not automatically enable lingering mode. Closes: https://github.com/containers/libpod/issues/4224 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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