From aec62d286296423a2f97cb376d9e11d2ea68cc8c Mon Sep 17 00:00:00 2001 From: Stefan Becker Date: Sun, 10 Nov 2019 15:07:43 +0200 Subject: docs: add workaround for --device with rootless containers Fixes #4477 Signed-off-by: Stefan Becker --- troubleshooting.md | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) (limited to 'troubleshooting.md') diff --git a/troubleshooting.md b/troubleshooting.md index 432c0e32b..d122983d7 100644 --- a/troubleshooting.md +++ b/troubleshooting.md @@ -468,4 +468,20 @@ $ podman unshare cat /proc/self/uid_map 1 100000 65536 ``` -Reference [subuid](http://man7.org/linux/man-pages/man5/subuid.5.html) and [subgid](http://man7.org/linux/man-pages/man5/subgid.5.html) man pages for more detail. \ No newline at end of file +Reference [subuid](http://man7.org/linux/man-pages/man5/subuid.5.html) and [subgid](http://man7.org/linux/man-pages/man5/subgid.5.html) man pages for more detail. + +### 20) Passed-in device can't be accessed in rootless container + +As a non-root user you have group access rights to a device that you want to +pass into a rootless container with `--device=...`. + +#### Symptom + +Any access inside the container is rejected with "Permission denied". + +#### Solution + +The runtime uses `setgroups(2)` hence the process looses all additional groups +the non-root user has. If you use the `crun` runtime, 0.10.4 or newer, +then you can enable a workaround by adding `--annotation io.crun.keep_original_groups=1` +to the `podman` command line. -- cgit v1.2.3-54-g00ecf