Fix inode extra time fields overflow.

[fsu]

Summary

Make inode extra time fields updating logic more closer to linux.

Test Plan

Found using pjdfstest:
pjdfstest/tests/utimensat/09.t

Testcase passed successfully.

[pfg]

Do not touch inode.h.

You can use inline functions to replace the macros and perhaps with some casting you can get over the issues.

sys/fs/ext2fs/inode.h

103

These changes are wrong. Long discussion with bde@ showed we should not diverge from UFS here and the kernel won't handle anything different different than int32_t.

[fsu]

sys/fs/ext2fs/inode.h

103

I think we not diverge from ufs so mach, you can check struct ufs2_dinode and ufs_time_t typedef, where ufs_time_t is int64_t.

[pfg]

While the ext_time_t approach is valid and it also consistent with UFS2, it is usually faster to use 32bit values so you *could* use casts. Either way is valid so I won't object.

sys/fs/ext2fs/ext2_inode_cnv.c

97

You are replacing a macro so use inline here

106

use inline here, and move it nearer to the place where it will be used.: basically where the macro was.

sys/fs/ext2fs/inode.h

103

I see: I was looking at ufs1_dinode while you are using ufs2_dinode.
last time I looked at linux these were uint32_t so casting should be enough.