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path: root/libpod/oci_conmon_linux.go
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* Fix message about runtime to show only the actual runtimeDaniel J Walsh2021-04-13
| | | | | | | | | | | | | | Currently the debug line shows every runtime up until it finds the correct one, confusing users on which runtime it is using. Also move missing OCI runtime from containers/conf down to Debug level and improved the debug message, to not report error. [NO TESTS NEEDED] Since this is just debug. Triggered by https://github.com/containers/podman/issues/4854 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Ensure that `--userns=keep-id` sets user in configMatthew Heon2021-04-06
| | | | | | | | | | | | | | | | | | | | | | | One of the side-effects of the `--userns=keep-id` command is switching the default user of the container to the UID of the user running Podman (though this can still be overridden by the `--user` flag). However, it did this by setting the UID and GID in the OCI spec, and not by informing Libpod of its intention to switch users via the `WithUser()` option. Because of this, a lot of the code that should have triggered when the container ran with a non-root user was not triggering. In the case of the issue that this fixed, the code to remove capabilities from non-root users was not triggering. Adjust the keep-id code to properly inform Libpod of our intention to use a non-root user to fix this. Also, fix an annoying race around short-running exec sessions where Podman would always print a warning that the exec session had already stopped. Fixes #9919 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* security: use the bounding caps with --privilegedGiuseppe Scrivano2021-03-19
| | | | | | | | | when --privileged is used, make sure to not request more capabilities than currently available in the current context. [NO TESTS NEEDED] since it fixes existing tests. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Check for supportsKVM based on basename of the runtimeDaniel J Walsh2021-03-03
| | | | | | | | | | | Fixes: https://github.com/containers/podman/issues/9582 This PR also adds tests to make sure SELinux labels match the runtime, or if init is specified works with the correct label. Add tests for selinux kvm/init labels Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Move checkpoint/restore code to pkg/checkpoint/crutilsAdrian Reber2021-03-02
| | | | | | | | | | | To be able to reuse common checkpoint/restore functions this commit moves code to pkg/checkpoint/crutils. This commit has not functional changes. It only moves code around. [NO TESTS NEEDED] - only moving code around Signed-off-by: Adrian Reber <areber@redhat.com>
* prune remotecommand dependencybaude2021-02-25
| | | | | | | | | | | prune a dependency that was only being used for a simple struct. Should correct checksum issue on tarballs [NO TESTS NEEDED] Fixes: #9355 Signed-off-by: baude <bbaude@redhat.com>
* 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>
* 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>
* Merge pull request #8947 from Luap99/cleanup-codeOpenShift Merge Robot2021-01-12
|\ | | | | Fix problems reported by staticcheck
| * Fix problems reported by staticcheckPaul Holzinger2021-01-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | `staticcheck` is a golang code analysis tool. https://staticcheck.io/ This commit fixes a lot of problems found in our code. Common problems are: - unnecessary use of fmt.Sprintf - duplicated imports with different names - unnecessary check that a key exists before a delete call There are still a lot of reported problems in the test files but I have not looked at those. Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
* | Merge pull request #8819 from chen-zhuohan/add-pre-checkpointOpenShift Merge Robot2021-01-12
|\ \ | | | | | | Add pre-checkpoint and restore with previous
| * | add pre checkpointunknown2021-01-10
| | | | | | | | | | | | Signed-off-by: Zhuohan Chen <chen_zhuohan@163.com>
* | | Merge pull request #8933 from giuseppe/use-O_PATH-for-unix-sockOpenShift Merge Robot2021-01-12
|\ \ \ | |_|/ |/| | oci: use /proc/self/fd/FD to open unix socket
| * | oci: use /proc/self/fd/FD to open unix socketGiuseppe Scrivano2021-01-12
| |/ | | | | | | | | | | | | | | | | | | | | instead of opening directly the UNIX socket path, grab a reference to it through a O_PATH file descriptor and use the fixed size string "/proc/self/fd/%d" to open the UNIX socket. In this way it won't hit the 108 chars length limit. Closes: https://github.com/containers/podman/issues/8798 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* / oci: keep LC_ env variables to conmonGiuseppe Scrivano2021-01-11
|/ | | | | | | | | | it is necessary for conmon to deal with the correct locale, otherwise it uses C as a fallback. Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1893567 Requires: https://github.com/containers/conmon/pull/215 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Handle podman exec capabilities correctlyDaniel J Walsh2021-01-07
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Merge pull request #8878 from mheon/no_edit_configOpenShift Merge Robot2021-01-04
|\ | | | | Ensure we do not edit container config in Exec
| * Ensure we do not edit container config in ExecMatthew Heon2021-01-04
| | | | | | | | | | | | | | | | | | | | | | | | The existing code grabs the base container's process, and then modifies it for use with the exec session. This could cause errors in `podman inspect` or similar on the container, as the definition of its OCI spec has been changed by the exec session. The change never propagates to the DB, so it's limited to a single process, but we should still avoid it when possible - so deep-copy it before use. Signed-off-by: Matthew Heon <mheon@redhat.com>
* | systemd: make rundir always accessibleGiuseppe Scrivano2021-01-04
|/ | | | | | | | | so that the PIDFile can be accessed also without being in the rootless user namespace. Closes: https://github.com/containers/podman/issues/8506 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* exec: honor --privilegedGiuseppe Scrivano2020-12-24
| | | | | | | write the capabilities to the configuration passed to the OCI runtime. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* libpod: change function to accept ExecOptionsGiuseppe Scrivano2020-12-24
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Merge pull request #8806 from rhatdan/keyringOpenShift Merge Robot2020-12-23
|\ | | | | Pass down EnableKeyring from containers.conf to conmon
| * Pass down EnableKeyring from containers.conf to conmonDaniel J Walsh2020-12-22
| | | | | | | | | | | | | | | | | | | | | | | | We have a new field in containers.conf that tells whether or not we want to generate a new keyring in a container. This field was being ignored. It now will be followed and passed down to conmon. Fixes: https://github.com/containers/podman/issues/8384 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* | SpellingJosh Soref2020-12-22
|/ | | | Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
* libpod, conmon: change log level for rootlessGiuseppe Scrivano2020-12-15
| | | | | | | | | Change the log level when running as rootless when moving conmon to a different cgroup. Closes: https://github.com/containers/podman/issues/8721 Signed-off-by: Giuseppe Scrivano <gscrivan@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>
* Only use container/storage/pkg/homedir.Get()Daniel J Walsh2020-11-04
| | | | | | | | | | | | | | | | | | | We are resolving the homedir of the user in many different places. This Patch consolodates them to use container/storage version. This PR also fixes a failure mode when the homedir does not exists, and the user sets a root path. In this situation podman should continue to work. Podman does not require a users homedir to exist in order to run. Finally the rootlessConfigHomeDirOnce and rootlessRuntimeDirOnce were broken, because if an error ever happened, they would not be recorded the second time, and "" would be returned as the path. Fixes: https://github.com/containers/podman/issues/8131 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* 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>
* Store cgroup manager on a per-container basisMatthew Heon2020-10-08
| | | | | | | | | | | | | | | | | | | | | When we create a container, we assign a cgroup parent based on the current cgroup manager in use. This parent is only usable with the cgroup manager the container is created with, so if the default cgroup manager is later changed or overridden, the container will not be able to start. To solve this, store the cgroup manager that created the container in container configuration, so we can guarantee a container with a systemd cgroup parent will always be started with systemd cgroups. Unfortunately, this is very difficult to test in CI, due to the fact that we hard-code cgroup manager on all invocations of Podman in CI. Fixes #7830 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Merge pull request #7929 from kolyshkin/nits-errOpenShift Merge Robot2020-10-06
|\ | | | | Nits
| * 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>
* | Support max_size logoptionsDaniel J Walsh2020-10-05
|/ | | | | | | | Docker supports log-opt max_size and so does conmon (ALthough poorly). Adding support for this allows users to at least make sure their containers logs do not become a DOS vector. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* HTTP Attach: Wait until both STDIN and STDOUT finishMatthew Heon2020-09-24
| | | | | | | | | | | | | | | In the old code, there was a chance that we could return when only one of STDIN or STDOUT had finished - this could lead to us dropping either input to the container, or output from it, in the case that one stream terminated early. To resolve this, use separate channels to return STDOUT and STDIN errors, and track which ones have returned cleanly to ensure that we need bith in order to return from the HTTP attach function and pass control back to the HTTP handler (which would assume we exited cleanly and close the client's attach connection). Signed-off-by: Matthew Heon <mheon@redhat.com>
* Fix a bug where log-driver json-file was made no logsMatthew Heon2020-09-23
| | | | | | | | | When we added the None log driver, it was accidentally added in the middle of a set of Fallthrough stanzas which all should have led to k8s-file, so that JSON file logging accidentally caused no logging to be selected instead of k8s-file. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Merge pull request #7403 from QiWang19/runtime-flagOpenShift Merge Robot2020-09-11
|\ | | | | Add global options --runtime-flags
| * 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>
* | 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 up some error messagesMatthew Heon2020-08-27
| | | | | | | | | We have a lot of 'cannot stat %s' errors in our codebase. These are terrible and confusing and utterly useless without context. Add some context to a few of them so we actually know what part of the code is failing. Signed-off-by: Matthew Heon <mheon@redhat.com>
* Send HTTP Hijack headers after successful attachMatthew Heon2020-08-27
| | | | | | | | | | | | | | | | | | | | | | | | | Our previous flow was to perform a hijack before passing a connection into Libpod, and then Libpod would attach to the container's attach socket and begin forwarding traffic. A problem emerges: we write the attach header as soon as the attach complete. As soon as we write the header, the client assumes that all is ready, and sends a Start request. This Start may be processed *before* we successfully finish attaching, causing us to lose output. The solution is to handle hijacking inside Libpod. Unfortunately, this requires a downright extensive refactor of the Attach and HTTP Exec StartAndAttach code. I think the result is an improvement in some places (a lot more errors will be handled with a proper HTTP error code, before the hijack occurs) but other parts, like the relocation of printing container logs, are just *bad*. Still, we need this fixed now to get CI back into good shape... Fixes #7195 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* fix close fds of run --preserve-fdsQi Wang2020-07-30
| | | | | | | Test flakes mentioned in #6987 might be caused by uncorrect closing of file descriptor. Fix the code to close file descriptors for podman run since it may close those used by other processes. Signed-off-by: Qi Wang <qiwan@redhat.com>
* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@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>
* 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>
* podman: add new cgroup mode splitGiuseppe Scrivano2020-06-25
| | | | | | | | | | | | | | | | | | | When running under systemd there is no need to create yet another cgroup for the container. With conmon-delegated the current cgroup will be split in two sub cgroups: - supervisor - container The supervisor cgroup will hold conmon and the podman process, while the container cgroup is used by the OCI runtime (using the cgroupfs backend). Closes: https://github.com/containers/libpod/issues/6400 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Add --preservefds to podman runQi Wang2020-06-19
| | | | | | Add --preservefds to podman run. close https://github.com/containers/libpod/issues/6458 Signed-off-by: Qi Wang <qiwan@redhat.com>
* Do not share container log driver for execMatthew Heon2020-06-17
| | | | | | | | | | | | | | | | | | | | | When the container uses journald logging, we don't want to automatically use the same driver for its exec sessions. If we do we will pollute the journal (particularly in the case of healthchecks) with large amounts of undesired logs. Instead, force exec sessions logs to file for now; we can add a log-driver flag later (we'll probably want to add a `podman logs` command that reads exec session logs at the same time). As part of this, add support for the new 'none' logs driver in Conmon. It will be the default log driver for exec sessions, and can be optionally selected for containers. Great thanks to Joe Gooch (mrwizard@dok.org) for adding support to Conmon for a null log driver, and wiring it in here. Fixes #6555 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* 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>
* Add exit commands to exec sessionsMatthew Heon2020-05-20
| | | | | | | | | | | These are required for detached exec, where they will be used to clean up and remove exec sessions when they exit. As part of this, move all Exec related functionality for the Conmon OCI runtime into a separate file; the existing one was around 2000 lines. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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