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path: root/pkg/spec/storage.go
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* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* 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>
* pkg/spec.InitFSMounts: optimizeKir Kolyshkin2020-04-02
| | | | | | | | | | Instead of getting mount options from /proc/self/mountinfo, which is very costly to read/parse (and can even be unreliable), let's use statfs(2) to figure out the flags we need. [v2: move getting default options to pkg/util, make it linux-specific] Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
* pkg/spec.InitFSMounts: fix mount opts in placeKir Kolyshkin2020-04-01
| | | | | | | ... rather than create a new slice and then make the caller replace the original with the new one. Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
* pkg/spec/initFSMounts: fixKir Kolyshkin2020-03-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | > $ ./bin/podman run -v /tmp:/tmp alpine true; echo $? > 0 > $ ./bin/podman run -v /tmp:/tmp:ro alpine true; echo $? > 0 > $ ./bin/podman run -v /tmp:/w0w:ro alpine true; echo $? > Error: container_linux.go:349: starting container process caused "process_linux.go:449: container init caused \"rootfs_linux.go:58: mounting \\\"/tmp\\\" to rootfs \\\"/home/kir/.local/share/containers/storage/overlay/7636ef3650fc91ee4996ccc026532bb3cff7182c0430db662fffb933e0bcadc9/merged\\\" at \\\"/home/kir/.local/share/containers/storage/overlay/7636ef3650fc91ee4996ccc026532bb3cff7182c0430db662fffb933e0bcadc9/merged/w0w\\\" caused \\\"operation not permitted\\\"\"": OCI runtime permission denied error > 126 The last command is not working because in-container mount point is used to search for a parent mount in /proc/self/mountinfo. And yet the following > $ ./bin/podman run -v /tmp:/run/test:ro alpine true; echo $? > 0 still works fine! Here's why: > $ mount | grep -E '/run |/tmp ' > tmpfs on /run type tmpfs (rw,nosuid,nodev,seclabel,mode=755) > tmpfs on /tmp type tmpfs (rw,nosuid,nodev,seclabel) This is the reason why previous commit modified in-container mount point. Fixes: 0f5ae3c5af Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.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>
* Merge pull request #5222 from mheon/fix_5219OpenShift Merge Robot2020-02-20
|\ | | | | Use cleaned destination path for indexing image volumes
| * Use cleaned destination path for indexing image volumesMatthew Heon2020-02-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | We use filepath.Clean() to remove trailing slashes to ensure that when we supercede image mounts with mounts from --volume and --mount, paths are consistent when we compare. Unfortunately, while we used the cleaned path for the destination in the mount, it was accidentally not used to index the maps that we use to identify what to supercede, so our comparisons might be thrown off by trailing slashes and similar. Fixes #5219 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | apiv2 container create using specgenBrent Baude2020-02-19
|/ | | | | | this uses the specgen structure to create containers rather than the outdated createconfig. right now, only the apiv2 create is wired up. eventually the cli will also have to be done. Signed-off-by: Brent Baude <bbaude@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>
* codespell: spelling correctionsDmitry Smirnov2019-11-13
| | | | Signed-off-by: Dmitry Smirnov <onlyjob@member.fsf.org>
* Split up create config handling of namespaces and securityPeter Hunt2019-11-07
| | | | | | | | As it stands, createconfig is a huge struct. This works fine when the only caller is when we create a container with a fully created config. However, if we wish to share code for security and namespace configuration, a single large struct becomes unweildy, as well as difficult to configure with the single createConfigToOCISpec function. This PR breaks up namespace and security configuration into their own structs, with the eventual goal of allowing the namespace/security fields to be configured by the pod create cli, and allow the infra container to share this with the pod's containers. Signed-off-by: Peter Hunt <pehunt@redhat.com>
* mount: add new options nocopyup|copyup for tmpfsGiuseppe Scrivano2019-11-07
| | | | | | add a way to disable tmpcopyup for tmpfs. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Image volumes should not be mounted noexecMatthew Heon2019-10-23
| | | | | | | | | This matches Docker more closely, but retains the more important protections of nosuid/nodev. Fixes #4318 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add support for anonymous volumes to `podman run -v`Matthew Heon2019-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously, when `podman run` encountered a volume mount without separate source and destination (e.g. `-v /run`) we would assume that both were the same - a bind mount of `/run` on the host to `/run` in the container. However, this does not match Docker's behavior - in Docker, this makes an anonymous named volume that will be mounted at `/run`. We already have (more limited) support for these anonymous volumes in the form of image volumes. Extend this support to allow it to be used with user-created volumes coming in from the `-v` flag. This change also affects how named volumes created by the container but given names are treated by `podman run --rm` and `podman rm -v`. Previously, they would be removed with the container in these cases, but this did not match Docker's behaviour. Docker only removed anonymous volumes. With this patch we move to that model as well; `podman run -v testvol:/test` will not have `testvol` survive the container being removed by `podman rm -v`. The sum total of these changes let us turn on volume removal in `--rm` by default. Fixes: #4276 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Handle conflict between volumes and --read-only-tmpfsMatthew Heon2019-09-24
| | | | | | | | | | When a named volume is mounted on any of the tmpfs filesystems created by read-only tmpfs, it caused a conflict that was not resolved prior to this. Fixes BZ1755119 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Clean destination paths during mount generationMatthew Heon2019-09-19
| | | | | | | | | | | | | We identify and resolve conflicts in paths using destination path matches. We require exact matches, largely for performance reasons (we use maps to efficiently access, keyed by destination). This usually works fine, until you get mounts that are targetted at /output and /output/ - the same path, but not the same string. Use filepath.Clean() aggressively to try and solve this. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add 'relabel' to --mount optionsDaniel J Walsh2019-09-16
| | | | | | | | | Currently if a user specifies a --mount option, their is no way to tell SELinux to relabel the mount point. This patch addes the relabel=shared and relabel=private options. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* Fix addition of mount options when using RO tmpfsMatthew Heon2019-08-28
| | | | | | | | For read-only containers set to create tmpfs filesystems over /run and other common destinations, we were incorrectly setting mount options, resulting in duplicate mount options. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Set base mount options for bind mounts from base systemMatthew Heon2019-08-28
| | | | | | | | | | | | | | | | | | If I mount, say, /usr/bin into my container - I expect to be able to run the executables in that mount. Unconditionally applying noexec would be a bad idea. Before my patches to change mount options and allow exec/dev/suid being set explicitly, we inferred the mount options from where on the base system the mount originated, and the options it had there. Implement the same functionality for the new option handling. There's a lot of performance left on the table here, but I don't know that this is ever going to take enough time to make it worth optimizing. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Don't double-process tmpfs optionsMatthew Heon2019-08-28
| | | | | | | | We already process the options on all tmpfs filesystems during final addition of mounts to the spec. We don't need to do it before that in parseVolumes. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add support for 'exec', 'suid', 'dev' mount flagsMatthew Heon2019-08-28
| | | | | | | | | | | | | | | | | | Previously, we explicitly set noexec/nosuid/nodev on every mount, with no ability to disable them. The 'mount' command on Linux will accept their inverses without complaint, though - 'noexec' is counteracted by 'exec', 'nosuid' by 'suid', etc. Add support for passing these options at the command line to disable our explicit forcing of security options. This also cleans up mount option handling significantly. We are still parsing options in more than one place, which isn't good, but option parsing for bind and tmpfs mounts has been unified. Fixes: #3819 Fixes: #3803 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Remove --tmpfs size defaultAshley Cui2019-08-14
| | | | | | | Docker has unlimited tmpfs size where Podman had it set to 64mb. Should be standard between the two. Remove noexec default Signed-off-by: Ashley Cui <ashleycui16@gmail.com>
* storage: drop unused geteuid checkGiuseppe Scrivano2019-08-12
| | | | | | it is always running with euid==0 at this point. Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Allow --ro=[true|false] with mount flagMatthew Heon2019-08-07
| | | | | | | | | | | The 'podman run --mount' flag previously allowed the 'ro' option to be specified, but was missing the ability to set it to a bool (as is allowed by docker). Add that. While we're at it, allow setting 'rw' explicitly as well. Fixes #2980 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Use buildah/pkg/parse volume parsing rather then internal versionDaniel J Walsh2019-08-01
| | | | | | | We share this code with buildah, so we should eliminate the podman version. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* fix bug convert volume host path to absoluteQi Wang2019-07-10
| | | | | | fix #3504 If --volume host:dest host is not a named volume, convert the host to a absolute directory path. Signed-off-by: Qi Wang <qiwan@redhat.com>
* Add tests for cached and delegated mountsMatthew Heon2019-06-19
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Allow (but ignore) Cached and Delegated volume optionsMatthew Heon2019-06-18
| | | | | | | | | | These are only used on OS X Docker, and ignored elsewhere - but since they are ignored, they're guaranteed to be safe everywhere, and people are using them. Fixes: #3340 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* storage: support --mount type=bind,bind-nonrecursiveGiuseppe Scrivano2019-06-13
| | | | | | | | add support for not recursive bind mounts. Closes: https://github.com/containers/libpod/issues/3314 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* storage: fix typoGiuseppe Scrivano2019-06-13
| | | | Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* Do not set tmpcopyup on /devMatthew Heon2019-05-30
| | | | | | Fixes #3229 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* When superceding mounts, check for opposite typesMatthew Heon2019-05-21
| | | | | | | | | | | | | | | | | | | When we supercede low-priority mounts and volumes (image volumes, and volumes sourced from --volumes-from) with higher-priority ones (the --volume and --mount flags), we always replaced lower-priority mounts of the same type (e.g. a user mount to /tmp/test1 would supercede a volumes-from mount to the same destination). However, we did not supercede the opposite type - a named volume from image volumes at /tmp/test1 would be allowed to remain and create a conflict, preventing container creation. Solve this by destroying opposite types before merging (we can't do it in the same loop, as then named volumes, which go second, might trample changes made by mounts). Fixes #3174 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Move handling of ReadOnlyTmpfs into new mounts codeMatthew Heon2019-05-01
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Ensure that named volumes have their options parsedMatthew Heon2019-05-01
| | | | | | | This involves moving some code out of pkg/spec/ into util/ so it can also be used by libpod. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add options parsing for tmpfs mountsMatthew Heon2019-05-01
| | | | | | | | | This ensures that all tmpfs mounts added by the user, even with the --mount flag, share a few common options (nosuid, noexec, nodev), and options for tmpfs mounts are properly validated to ensure they are correct. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Hit a number of to-do comments in unified volumes codeMatthew Heon2019-05-01
| | | | | | | | As part of this, move bind mount option validity parsing and modification (adding e.g. rbind on bind mounts that are missing it), which requires test changes (expected values have changed). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Fix options for non-bind and non-tmpfs volumesMatthew Heon2019-05-01
| | | | | | | | | We were unconditionally resetting volume mount options for all mount points (and by the looks of things, completely dropping tmpfs mounts), which was causing runc to refuse to run containers and all the tests to consequently fail. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Migrate to unified volume handling codeMatthew Heon2019-05-01
Unify handling for the --volume, --mount, --volumes-from, --tmpfs and --init flags into a single file and set of functions. This will greatly improve readability and maintainability. Further, properly handle superceding and conflicting mounts. Our current patchwork has serious issues when mounts conflict, or when a mount from --volumes-from or an image volume should be overwritten by a user volume or named volume. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
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