| Commit message (Collapse) | Author | Age |
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Expose security attribute errors with their own messages
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This creates error objects for runtime errors that might come from the
runtime. Thus, indicating to users that the place to debug should be in
the security attributes of the container.
When creating a container with a SELinux label that doesn't exist, we
get a fairly cryptic error message:
```
$ podman run --security-opt label=type:my_container.process -it fedora bash
Error: OCI runtime error: write file `/proc/thread-self/attr/exec`: Invalid argument
```
This instead handles any errors coming from LSM's `/proc` API and
enhances the error message with a relevant indicator that it's related
to the container's security attributes.
A sample run looks as follows:
```
$ bin/podman run --security-opt label=type:my_container.process -it fedora bash
Error: `/proc/thread-self/attr/exec`: OCI runtime error: unable to assign security attribute
```
With `debug` log level enabled it would be:
```
Error: write file `/proc/thread-self/attr/exec`: Invalid argument: OCI runtime error: unable to assign security attribute
```
Note that these errors wrap ErrOCIRuntime, so it's still possible to to
compare these errors with `errors.Is/errors.As`.
One advantage of this approach is that we could start handling these
errors in a more efficient manner in the future.
e.g. If a SELinux label doesn't exist (yet), we could retry until it
becomes available.
Signed-off-by: Juan Antonio Osorio Robles <jaosorior@redhat.com>
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Fix problems reported by staticcheck
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`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>
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Add pre-checkpoint and restore with previous
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Signed-off-by: Zhuohan Chen <chen_zhuohan@163.com>
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oci: use /proc/self/fd/FD to open unix socket
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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>
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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>
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Add support for checkpoint/restore of containers with volumes
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When migrating a container with associated volumes, the content of
these volumes should be made available on the destination machine.
This patch enables container checkpoint/restore with named volumes
by including the content of volumes in checkpoint file. On restore,
volumes associated with container are created and their content is
restored.
The --ignore-volumes option is introduced to disable this feature.
Example:
# podman container checkpoint --export checkpoint.tar.gz <container>
The content of all volumes associated with the container are included
in `checkpoint.tar.gz`
# podman container checkpoint --export checkpoint.tar.gz --ignore-volumes <container>
The content of volumes is not included in `checkpoint.tar.gz`. This is
useful, for example, when the checkpoint/restore is performed on the
same machine.
# podman container restore --import checkpoint.tar.gz
The associated volumes will be created and their content will be
restored. Podman will exit with an error if volumes with the same
name already exist on the system or the content of volumes is not
included in checkpoint.tar.gz
# podman container restore --ignore-volumes --import checkpoint.tar.gz
Volumes associated with container must already exist. Podman will not
create them or restore their content.
Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
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Instead of individual values from ContainerCheckpointOptions,
provide the options object.
This is a preparation for the next patch where one more value
of the options object is required in exportCheckpoint().
Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
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Switch references of /var/run -> /run
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Systemd is now complaining or mentioning /var/run as a legacy directory.
It has been many years where /var/run is a symlink to /run on all
most distributions, make the change to the default.
Partial fix for https://github.com/containers/podman/issues/8369
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Containers should not get inheritable caps by default
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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rootless: automatically split userns ranges
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writing to the id map fails when an extent overlaps multiple mappings
in the parent user namespace:
$ cat /proc/self/uid_map
0 1000 1
1 100000 65536
$ unshare -U sleep 100 &
[1] 1029703
$ printf "0 0 100\n" | tee /proc/$!/uid_map
0 0 100
tee: /proc/1029703/uid_map: Operation not permitted
This limitation is particularly annoying when working with rootless
containers as each container runs in the rootless user namespace, so a
command like:
$ podman run --uidmap 0:0:2 --rm fedora echo hi
Error: writing file `/proc/664087/gid_map`: Operation not permitted: OCI permission denied
would fail since the specified mapping overlaps the first
mapping (where the user id is mapped to root) and the second extent
with the additional IDs available.
Detect such cases and automatically split the specified mapping with
the equivalent of:
$ podman run --uidmap 0:0:1 --uidmap 1:1:1 --rm fedora echo hi
hi
A fix has already been proposed for the kernel[1], but even if it
accepted it will take time until it is available in a released kernel,
so fix it also in pkg/rootless.
[1] https://lkml.kernel.org/lkml/20201203150252.1229077-1-gscrivan@redhat.com/
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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If a partial log line has the length 1 it was ignored by podman logs.
Fixes #8879
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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libpod: handle single user mapped as root
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if a single user is mapped in the user namespace, handle it as root.
It is needed for running unprivileged containers with a single user
available without being forced to run with euid and egid set to 0.
Needs: https://github.com/containers/storage/pull/794
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Ensure that user-specified HOSTNAME is honored
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When adding the HOSTNAME environment variable, only do so if it
is not already present in the spec. If it is already present, it
was likely added by the user, and we should honor their requested
value.
Fixes #8886
Signed-off-by: Matthew Heon <mheon@redhat.com>
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Ignore containers.conf sysctls when sharing namespaces
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Ensure that infra containers for pods will grab default sysctls
from containers.conf, to match how other containers are created.
This mostly affects the other containers in the pod, which will
inherit those sysctls when they join the pod's namespaces.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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Rework pruning to report reclaimed space
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This change adds code to report the reclaimed space after a prune.
Reclaimed space from volumes, images, and containers is recorded
during the prune call in a PruneReport struct. These structs are
collected into a slice during a system prune and processed afterwards
to calculate the total reclaimed space.
Closes #8658
Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>
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close journald when reading
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when reading from journald, we need to close the journal handler for
events and logging.
Fixes: #8864
Signed-off-by: baude <bbaude@redhat.com>
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Ensure we do not edit container config in Exec
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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>
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Allow image errors to bubble up from lower level functions.
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Currently we ignore ErrMultipleImages being returned from findImageInRepoTags.
Fixes: https://github.com/containers/podman/issues/8868
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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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>
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exec: honor --privileged
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write the capabilities to the configuration passed to the OCI
runtime.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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The slirp4netns sandbox requires pivot_root
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Disable the sandbox, when running on rootfs
Signed-off-by: Anders F Björklund <anders.f.bjorklund@gmail.com>
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Add support for Gentoo file to package query
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On Gentoo systems where `app-portage/gentoolkit` is installed the binary
`equery` is used to query for information on which package a file
belongs to.
Signed-off-by: Michael Vetter <jubalh@iodoru.org>
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Per the conversation on pull/8724 I am consolidating filter logic
and helper functions under the pkg/domain/filters dir.
Signed-off-by: Baron Lenardson <lenardson.baron@gmail.com>
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re-open container log files
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when following container log files, if the file gets rotated due to
something like size limit, re-open it and keep following.
Fixes: #8733
Signed-off-by: baude <bbaude@redhat.com>
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Pass down EnableKeyring from containers.conf to conmon
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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>
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Prefer read/write images over read/only images
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With additional stores there is a risk that you could have
multiple images with the same name. IE An older image in a
read/only store versus a newer version in the read/write store.
This patch will ignore multiple images with the same name iff
one is read/write and all of the others are read/only.
Fixes: https://github.com/containers/podman/issues/8176
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Spelling
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Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
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