|author||Kevin Hamacher <firstname.lastname@example.org>||Wed Jun 05 17:28:46 2019 +0200|
|committer||Treehugger Robot <email@example.com>||Thu Jun 27 15:59:38 2019 +0000|
Fix RO-remount logic for bindmounts Using pivot-roots with bindmounts causes the kernel to keep some mountflags of the source directory (nosuid, noexec, nodev) that have to be specified during the RO-remount, otherwise the mount will fail with EPERM. This was already previously covered by obtaining the source mount flags in `setup_mount_destination`. This function failed to provide those flags if the estination folder is already existing (mounting destination '/'). This commit moves the logic to determine the mountflags of a given mountpoint into a dedicated function and properly handles vfs->mount flag translation. Test: All tests pass Bug: crbug.com/971656 Change-Id: I7468b63e26fd43f45175ac54c952f726ff93a434
The Minijail homepage and main repo is https://android.googlesource.com/platform/external/minijail/.
There might be other copies floating around, but this is the official one!
Minijail is a sandboxing and containment tool used in Chrome OS and Android. It provides an executable that can be used to launch and sandbox other programs, and a library that can be used by code to sandbox itself.
git clone away from happiness.
$ git clone https://android.googlesource.com/platform/external/minijail $ cd minijail
Releases are tagged as
See the HACKING.md document for more details.
See the RELEASE.md document for more details.
We've got a couple of contact points.
The following talk serves as a good introduction to Minijail and how it can be used.
The Chromium OS project has a comprehensive sandboxing document that is largely based on Minijail.
After you play with the simple examples below, you should check that out.
# id uid=0(root) gid=0(root) groups=0(root),128(pkcs11) # minijail0 -u jorgelo -g 5000 /usr/bin/id uid=72178(jorgelo) gid=5000(eng) groups=5000(eng)
# minijail0 -u jorgelo -c 3000 -- /bin/cat /proc/self/status Name: cat ... CapInh: 0000000000003000 CapPrm: 0000000000003000 CapEff: 0000000000003000 CapBnd: 0000000000003000