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tree: 5253c10b35340b9d30c8207238d62f25cbf20889 [path history] [tgz]
  1. examples/
  2. linux-x86/
  3. test/
  4. tools/
  5. .clang-format
  6. .gitignore
  7. Android.bp
  8. arch.h
  9. bpf.c
  10. bpf.h
  11. CleanSpec.mk
  12. common.mk
  13. CPPLINT.cfg
  14. dump_constants.cc
  15. elfparse.c
  16. elfparse.h
  17. gen_constants-inl.h
  18. gen_constants.c
  19. gen_constants.sh
  20. gen_syscalls-inl.h
  21. gen_syscalls.c
  22. gen_syscalls.sh
  23. get_googletest.sh
  24. HACKING.md
  25. libconstants.h
  26. libminijail-private.h
  27. libminijail.c
  28. libminijail.h
  29. libminijail.pc.in
  30. libminijail_unittest.cc
  31. libminijailpreload.c
  32. libsyscalls.h
  33. LICENSE
  34. Makefile
  35. minijail0.1
  36. minijail0.5
  37. minijail0.c
  38. minijail0_cli.c
  39. minijail0_cli.h
  40. minijail0_cli_unittest.cc
  41. MODULE_LICENSE_BSD
  42. navbar.md
  43. NOTICE
  44. OWNERS
  45. parse_seccomp_policy.cc
  46. platform2_preinstall.sh
  47. PRESUBMIT.cfg
  48. PREUPLOAD.cfg
  49. README.md
  50. RELEASE.md
  51. scoped_minijail.h
  52. signal_handler.c
  53. signal_handler.h
  54. syscall_filter.c
  55. syscall_filter.h
  56. syscall_filter_unittest.cc
  57. syscall_filter_unittest_macros.h
  58. syscall_wrapper.c
  59. syscall_wrapper.h
  60. system.c
  61. system.h
  62. system_unittest.cc
  63. testrunner.cc
  64. util.c
  65. util.h
  66. util_unittest.cc
README.md

Minijail

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!

What is it?

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.

Getting the code

You're one git clone away from happiness.

$ git clone https://android.googlesource.com/platform/external/minijail
$ cd minijail

Releases are tagged as linux-vXX: https://android.googlesource.com/platform/external/minijail/+refs

Building

See the HACKING.md document for more details.

Release process

See the RELEASE.md document for more details.

Contact

We've got a couple of contact points.

Talks and presentations

The following talk serves as a good introduction to Minijail and how it can be used.

Video, slides.

Example usage

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.

Change root to any user

# 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)

Drop root while keeping some capabilities

# minijail0 -u jorgelo -c 3000 -- /bin/cat /proc/self/status
Name: cat
...
CapInh: 0000000000003000
CapPrm: 0000000000003000
CapEff: 0000000000003000
CapBnd: 0000000000003000