Re: [LTP] [PATCH v2 3/7] Add ioctl_ficlone02 test

[Petr Vorel <pvorel@suse.cz>]

Hi all,

> This test verifies that ioctl() FICLONE/FICLONERANGE feature
> correctly raises EOPNOTSUPP when unsupported filesystem is used.
> In particular, filesystems which don't support copy-on-write.

This test, merged as [1] fails on bcachefs:

$ cd testcases/kernel/syscalls/ioctl/
# # LTP_SINGLE_FS_TYPE=bcachefs ./ioctl_ficlone02
tst_buffers.c:57: TINFO: Test is using guarded buffers
tst_tmpdir.c:316: TINFO: Using /tmp/LTP_iocu1xhKp as tmpdir (tmpfs filesystem)
tst_device.c:96: TINFO: Found free device 0 '/dev/loop0'
tst_test.c:1806: TINFO: LTP version: 20240524-131-gdfb293ee0
tst_test.c:1650: TINFO: Timeout per run is 0h 00m 30s
tst_supported_fs_types.c:161: TINFO: WARNING: testing only bcachefs
tst_supported_fs_types.c:97: TINFO: Kernel supports bcachefs
tst_supported_fs_types.c:62: TINFO: mkfs.bcachefs does exist
tst_test.c:1746: TINFO: === Testing on bcachefs ===
tst_test.c:1111: TINFO: Formatting /dev/loop0 with bcachefs opts='' extra opts=''
tst_test.c:1123: TINFO: Mounting /dev/loop0 to /tmp/LTP_iocu1xhKp/mnt fstyp=bcachefs flags=0
ioctl_ficlone02.c:33: TFAIL: ioctl(dst_fd, FICLONE, src_fd) succeeded
ioctl_ficlone02.c:34: TFAIL: ioctl(dst_fd, FICLONERANGE, clone_range) expected EOPNOTSUPP: EINVAL (22)

I tested only kernel 6.10 and 6.9, fails on both. Maybe it's just a different
errno set...

Kind regards,
Petr

[1] https://github.com/linux-test-project/ltp/commit/d70bfb185c9aa52aeab9b9893055eec7fc969a4f