[PATCH v9 0/4 REBASED] fstests: add idmapped mounts tests

[Christian Brauner <christian.brauner@ubuntu.com>]

Hey everyone,

/* v9 */
Rebased onto current master.
Hopefully we can merge this soon so we can have regular testing asap and
the rebasing is getting a bit tedious too. ;)

ubuntu@f1-vm:~/src/git/xfstests$ sudo ./check generic/631
FSTYP         -- xfs (non-debug)
PLATFORM      -- Linux/x86_64 f1-vm 5.12.0-rc3-inode-helpers #343 SMP Mon Mar 15 12:57:02 UTC 2021
MKFS_OPTIONS  -- -f -bsize=4096 /dev/loop1
MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

generic/631 9s ...  11s
Ran: generic/631
Passed all 1 tests

ubuntu@f1-vm:~/src/git/xfstests$ sudo ./check generic/632
FSTYP         -- xfs (non-debug)
PLATFORM      -- Linux/x86_64 f1-vm 5.12.0-rc3-inode-helpers #343 SMP Mon Mar 15 12:57:02 UTC 2021
MKFS_OPTIONS  -- -f -bsize=4096 /dev/loop1
MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

generic/632      15s
Ran: generic/632
Passed all 1 tests

ubuntu@f1-vm:~/src/git/xfstests$ sudo ./check xfs/529
FSTYP         -- xfs (non-debug)
PLATFORM      -- Linux/x86_64 f1-vm 5.12.0-rc3-inode-helpers #343 SMP Mon Mar 15 12:57:02 UTC 2021
MKFS_OPTIONS  -- -f -bsize=4096 /dev/loop1
MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

xfs/529 25s ...  43s
Ran: xfs/529
Passed all 1 tests

ubuntu@f1-vm:~/src/git/xfstests$ sudo ./check xfs/530
FSTYP         -- xfs (non-debug)
PLATFORM      -- Linux/x86_64 f1-vm 5.12.0-rc3-inode-helpers #343 SMP Mon Mar 15 12:57:02 UTC 2021
MKFS_OPTIONS  -- -f -bsize=4096 /dev/loop1
MOUNT_OPTIONS -- /dev/loop1 /mnt/scratch

xfs/530  24s
Ran: xfs/530
Passed all 1 tests

/* v8 */
This adds the testsuite for idmapped mounts. It has been expanded quite
a bit too since the last version:
- Add a testcase to verify that detached mounts in the new mount api
  work correctly.
- Add a full testsuite for idmapped mounts.
- Add two quota tests verifying xfs behavior.

Sorry that it took so long to resend this testsuite but I had to chase
and fix a bug in the new mount API (completely independent of idmapped
mounts) before I could add quota tests because they would otherwise run
danger to render the host mount namespace unuseable due to that bug
(cf.  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d3110f256d126b44d34c1f662310cd295877c447)
All tests here pass for me on a kernel with idmapped mounts. The xfs
specific quota tests should go on top of the fixes that Darrick is
currently carrying for 5.12 and which he sent out a little while ago.

Thanks!
Christian

Christian Brauner (4):
  generic/631: add test for detached mount propagation
  generic/632: add fstests for idmapped mounts
  xfs/529: quotas and idmapped mounts
  xfs/530: quotas on idmapped mounts

 .gitignore                            |    3 +
 common/rc                             |   25 +
 configure.ac                          |    2 +
 include/builddefs.in                  |    1 +
 m4/Makefile                           |    1 +
 m4/package_libcap.m4                  |    4 +
 src/Makefile                          |    8 +-
 src/detached_mounts_propagation.c     |  189 +
 src/feature.c                         |   40 +-
 src/idmapped-mounts/Makefile          |   41 +
 src/idmapped-mounts/idmapped-mounts.c | 8627 +++++++++++++++++++++++++
 src/idmapped-mounts/missing.h         |  151 +
 src/idmapped-mounts/mount-idmapped.c  |  428 ++
 src/idmapped-mounts/utils.c           |  134 +
 src/idmapped-mounts/utils.h           |   30 +
 tests/generic/631                     |   41 +
 tests/generic/631.out                 |    2 +
 tests/generic/632                     |   42 +
 tests/generic/632.out                 |    2 +
 tests/generic/group                   |    2 +
 tests/xfs/529                         |  373 ++
 tests/xfs/529.out                     |  657 ++
 tests/xfs/530                         |  274 +
 tests/xfs/530.out                     |  129 +
 tests/xfs/group                       |    2 +
 25 files changed, 11203 insertions(+), 5 deletions(-)
 create mode 100644 m4/package_libcap.m4
 create mode 100644 src/detached_mounts_propagation.c
 create mode 100644 src/idmapped-mounts/Makefile
 create mode 100644 src/idmapped-mounts/idmapped-mounts.c
 create mode 100644 src/idmapped-mounts/missing.h
 create mode 100644 src/idmapped-mounts/mount-idmapped.c
 create mode 100644 src/idmapped-mounts/utils.c
 create mode 100644 src/idmapped-mounts/utils.h
 create mode 100644 tests/generic/631
 create mode 100644 tests/generic/631.out
 create mode 100644 tests/generic/632
 create mode 100644 tests/generic/632.out
 create mode 100644 tests/xfs/529
 create mode 100644 tests/xfs/529.out
 create mode 100644 tests/xfs/530
 create mode 100644 tests/xfs/530.out


base-commit: f6ddaf130d5b0817278afe441fdde52f464f321b
-- 
2.27.0