[PATCH 0/7] idmapped mounts: extend testsuite and fixes

Christian Brauner
2021-05-07T15:01:16Z

Hey,

This introduces two new idmapped mount tests.
The first test extends the v3 fscaps tests for idmapped mounts.
The second test verified that idmapped mounts behave correctly when
nested user namespaces are used. In essence it creates a fairly complex
nested user namespace hierarchy and then tests whether file ownership
changes are correctly reflected in all idmapped mounts as seen from all
those user namespaces.
In addition this fixes a couple of minor things and shares more code
between the mount-idmapped and idmapped-mounts binaries.

Thanks!
Christian

Christian Brauner (7):
idmapped-mounts: remove unused set_cloexec() helper
idmapped-mounts: add missing newline to print_r()
idmapped-mounts: split out run_test() function
generic/637: add fscaps regression test
idmapped-mounts: refactor helpers
idmapped-mounts: add nested userns creation helpers
generic/638: add nested user namespace tests

.gitignore | 2 +
src/idmapped-mounts/Makefile | 16 +-
src/idmapped-mounts/idmapped-mounts.c | 931 ++++++++++++++++++++++++--
src/idmapped-mounts/mount-idmapped.c | 228 +------
src/idmapped-mounts/utils.c | 359 ++++++++--
src/idmapped-mounts/utils.h | 102 ++-
tests/generic/637 | 42 ++
tests/generic/637.out | 2 +
tests/generic/638 | 42 ++
tests/generic/638.out | 2 +
tests/generic/group | 2 +
11 files changed, 1397 insertions(+), 331 deletions(-)
create mode 100755 tests/generic/637
create mode 100644 tests/generic/637.out
create mode 100755 tests/generic/638
create mode 100644 tests/generic/638.out

base-commit: 40818883aecd19581a71cc096d07eb9106c11b10
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2.27.0