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Change /sys/fs/cgroup/systemd mount to rprivate
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I used the wrong propagation first time around because I forgot
that rprivate is the default propagation. Oops. Switch to
rprivate so we're using the default.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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Add support for setting the CIDR when using slirp4netns
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This adds support for the --cidr parameter that is supported
by slirp4netns since v0.3.0. This allows the user to change
the ip range that is used for the network inside the container.
Signed-off-by: Adis Hamzić <adis@hamzadis.com>
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upon image build completion, a new image type event is written for "build". more intricate details, like pulling an image, that might be done by build must be implemented in different vendored packages only after libpod is split from podman.
Fixes: #7022
Signed-off-by: Brent Baude <bbaude@redhat.com>
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On cgroups v1 systems, we need to mount /sys/fs/cgroup/systemd
into the container. We were doing this with no explicit mount
propagation tag, which means that, under some circumstances, the
shared mount propagation could be chosen - which, combined with
the fact that we need a mount to mask
/sys/fs/cgroup/systemd/release_agent in the container, means we
would leak a never-ending set of mounts under
/sys/fs/cgroup/systemd/ on container restart.
Fortunately, the fix is very simple - hardcode mount propagation
to something that won't leak.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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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>
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support outbound-addr
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Fixes #6064
Signed-off-by: Bohumil Cervenka <5eraph@protonmail.com>
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images: speed up lists
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Listing images has shown increasing performance penalties with an
increasing number of images. Unless `--all` is specified, Podman
will filter intermediate images. Determining intermediate images
has been done by finding (and comparing!) parent images which is
expensive. We had to query the storage many times which turned it
into a bottleneck.
Instead, create a layer tree and assign one or more images to nodes that
match the images' top layer. Determining the children of an image is
now exponentially faster as we already know the child images from the
layer graph and the images using the same top layer, which may also be
considered child images based on their history.
On my system with 510 images, a rootful image list drops from 6 secs
down to 0.3 secs.
Also use the tree to compute parent nodes, and to filter intermediate
images for pruning.
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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fix podman logs --tail when log is bigger than pagesize
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Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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Ensure that exec errors write exit codes to the DB
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In local Podman, the frontend interprets the error and exit code
given by the Exec API to determine the appropriate exit code to
set for Podman itself; special cases like a missing executable
receive special exit codes.
Exec for the remote API, however, has to do this inside Libpod
itself, as Libpod will be directly queried (via the Inspect API
for exec sessions) to get the exit code. This was done correctly
when the exec session started properly, but we did not properly
handle cases where the OCI runtime fails before the exec session
can properly start. Making two error returns that would otherwise
not set exit code actually do so should resolve the issue.
Fixes #6893
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Ensure WORKDIR from images is created
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A recent crun change stopped the creation of the container's
working directory if it does not exist. This is arguably correct
for user-specified directories, to protect against typos; it is
definitely not correct for image WORKDIR, where the image author
definitely intended for the directory to be used.
This makes Podman create the working directory and chown it to
container root, if it does not already exist, and only if it was
specified by an image, not the user.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Wrap the inner helper in the retry function. Functions pullimage failed with retriable error will default maxretry 3 times using exponential backoff.
Signed-off-by: Qi Wang <qiwan@redhat.com>
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Check if there is an pod or container an return
the appropriate error message instead of blindly
return 'container exists' with `podman create` and
'pod exists' with `podman pod create`.
Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
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API returns 500 in case network is not found instead of 404
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Signed-off-by: zhangguanzhang <zhangguanzhang@qq.com>
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Some calls to `Sprintf("%s")` can be avoided by using direct string
type assertions.
Signed-off-by: Sascha Grunert <sgrunert@suse.com>
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The define package under Libpod is intended to be an extremely
minimal package, including constants and very little else.
However, as a result of some legacy code, it was dragging in all
of libpod/image (and, less significantly, the util package).
Fortunately, this was just to ensure that error constants were
not duplicating, and there's nothing preventing us from
importing in the other direction and keeping libpod/define free
of dependencies.
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Fix close fds of exec --preserve-fds
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Fix the closing of fds from --preserve-fds to avoid the operation on unrelated fds.
Signed-off-by: Qi Wang <qiwan@redhat.com>
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Fix close fds of run --preserve-fds
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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>
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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>
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The logic for `podman rmi --force` includes a bit of code that
will remove Libpod containers using Libpod's container removal
logic - this ensures that they're cleanly and completely removed.
For other containers (Buildah, CRI-O, etc) we fall back to
manually removing the containers using the image from c/storage.
Unfortunately, our logic for invoking the Podman removal function
had an error, and it did not properly handle cases where we were
force-removing an image with >1 name. Force-removing such images
by ID guarantees their removal, not just an untag of a single
name; our code for identifying whether to remove containers did
not proper detect this case, so we fell through and deleted the
Podman containers as storage containers, leaving traces of them
in the Libpod DB.
Fixes #7153
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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Make changes to /etc/passwd on disk for non-read only
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Bind-mounting /etc/passwd into the container is problematic
becuase of how system utilities like `useradd` work. They want
to make a copy and then rename to try to prevent breakage; this
is, unfortunately, impossible when the file they want to rename
is a bind mount. The current behavior is fine for read-only
containers, though, because we expect useradd to fail in those
cases.
Instead of bind-mounting, we can edit /etc/passwd in the
container's rootfs. This is kind of gross, because the change
will show up in `podman diff` and similar tools, and will be
included in images made by `podman commit`. However, it's a lot
better than breaking important system tools.
Fixes #6953
Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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There are many use cases where you want to just mount an image
without creating a container on it. For example you might want
to just examine the content in an image after you pull it for
security analysys. Or you might want to just use the executables
on the image without running it in a container.
The image is mounted readonly since we do not want people changing
images.
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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When chowning we should not follow symbolic link
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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This commit handle the TODO task of breaking the Container
config into smaller sub-configs
Signed-off-by: ldelossa <ldelossa@redhat.com>
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Currently you can not apply an ApparmorProfile if you specify
--privileged. This patch will allow both to be specified
simultaniosly.
By default Apparmor should be disabled if the user
specifies --privileged, but if the user specifies --security apparmor:PROFILE,
with --privileged, we should do both.
Added e2e run_apparmor_test.go
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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Add --umask flag for create, run
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--umask sets the umask inside the container
Defaults to 0022
Co-authored-by: Daniel J Walsh <dwalsh@redhat.com>
Signed-off-by: Ashley Cui <acui@redhat.com>
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This was added with an earlier exec rework, and honestly is very
confusing. Podman is printing an error message, but the error had
nothing to do with Podman; it was the executable we ran inside
the container that errored, and per `podman run` convention we
should set the Podman exit code to the process's exit code and
print no error.
Signed-off-by: Matthew Heon <mheon@redhat.com>
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events endpoint: fix panic and race condition
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Fix a potential panic in the events endpoint when parsing the filters
parameter. Values of the filters map might be empty, so we need to
account for that instead of uncondtitionally accessing the first item.
Also apply a similar for race conditions as done in commit f4a2d25c0fca:
Fix a race that could cause read errors to be masked. Masking
such errors is likely to report red herrings since users don't
see that reading failed for some reasons but that a given event
could not be found.
Another race was the handler closing event channel, which could lead to
two kinds of panics: double close, send to close channel. The backend
takes care of that. However, make sure that the backend stops working
in case the context has been cancelled.
Fixes: #6899
Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
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Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
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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>
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the code got lost in the migration to podman 2.0, reintroduce it.
Closes: https://github.com/containers/podman/issues/6989
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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allow switching of port-forward approaches in rootless/using slirp4netns
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Closes: https://github.com/containers/podman/issues/6912
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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do not pass network specific options through the network namespace.
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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As of podman 1.8.0, because of commit da7595a, the default approach of providing
port-forwarding in rootless mode has switched (and been hard-coded) to rootlessport,
for the purpose of providing super performance. The side-effect of this switch is
source within the container to the port-forwarded service always appears to originate
from 127.0.0.1 (see issue #5138).
This commit allows a user to specify if they want to revert to the previous approach
of leveraging slirp4netns add_hostfwd() api which, although not as stellar performance,
restores usefulness of seeing incoming traffic origin IP addresses.
The change should be transparent; when not specified, rootlessport will continue to be
used, however if specifying --net slirp4netns:slirplisten the old approach will be used.
Note: the above may imply the restored port-forwarding via slirp4netns is not as
performant as the new rootlessport approach, however the figures shared in the original
commit that introduced rootlessport are as follows:
slirp4netns: 8.3 Gbps,
RootlessKit: 27.3 Gbps,
which are more than sufficient for many use cases where the origin of traffic is more
important than limits that cannot be reached due to bottlenecks elsewhere.
Signed-off-by: Aleks Mariusz <m.k@alek.cx>
Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
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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>
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