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The main purpose of this\nattribute is to allow for a interoperable and standardised way of emulating\npersistent syscalls in a [rootless container][rootlesscontaine.rs] (syscalls\nsuch as `chown(2)` which would ordinarily fail).\n\nThe issues that are encountered with rootless containers and things like\n`chown(2)` are discussed in [the following talk from 2017][rootless-talk].\n\n[protobuf]: https://developers.google.com/protocol-buffers/\n[rootlesscontaine.rs]: https://rootlesscontaine.rs/\n[rootless-talk]: https://youtu.be/r6EcUyamu94?t=1143\n\n### Support ###\n\nThe following is a list of known projects that support\n`user.rootlesscontainers` and can interoperate between one another.\n\n* [`umoci`][umoci] (a tool for manipulating OCI images in a very flexible\n  manner). Version `0.4.0` and later have full `user.rootlesscontainers`\n  support, both with `umoci unpack` and `umoci repack`.\n\n* [The Apptainer fork of proot][proot-fork] with a few patches applied. `PRoot` allows\n  for full emulation (through `ptrace` with optional `seccomp` acceleration) of\n  all privilege operations that would produce \"strange\" results inside a\n  rootless container. This is a perfect fit for rootless containers.\n\n[umoci]: https://github.com/openSUSE/umoci\n[proot-fork]: https://github.com/apptainer/PRoot\n\n### License ###\n\nThis project (in particular the `rootlesscontainers.proto` file and generated\nsources) are all licensed under the Apache License 2.0.\n\n```\nrootlesscontainers-proto: persistent rootless filesystem emulation\nCopyright (C) 2018 Rootless Containers Authors\n\nLicensed under the Apache License, Version 2.0 (the \"License\");\nyou may not use this file except in compliance with the License.\nYou may obtain a copy of the License at\n\n    http://www.apache.org/licenses/LICENSE-2.0\n\nUnless required by applicable law or agreed to in writing, software\ndistributed under the License is distributed on an \"AS IS\" BASIS,\nWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\nSee the License for the specific language governing permissions and\nlimitations under the License.\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frootless-containers%2Fproto","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Frootless-containers%2Fproto","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Frootless-containers%2Fproto/lists"}