DragonFly kernel List (threaded) for 2007-11
struct vattr changes coming up
I am going to have to make numerous fields in struct vattr much larger
to accomodate HAMMER. I'm fairly sure the changes will not be exposed
to userland too badly but I can't guarentee it.
va_nlink, va_fsid, va_fileid, and va_gen will be expanded from 32 to 64
va_uid and va_gid will be expanded from a uid_t/gid_t to a full
16-byte uuid_t. The kernel will convert to and from the standard
32 bit uid_t and gid_t.
I will not be changing the ucred structure, that would be a bit too big
of bite for the moment.
The statvfs structure will also have to be changed in order to properly
export the 16 byte fsid. That will be user-visible, but fortunately
we have some spare fields we can use for it and I'll name the fields
f_fsid_uuid and f_owner_uuid and leave the original f_fsid and f_owner
We're stuck with the stat structure as-is, changing that would be a huge
mess. Fortunately we made the change to 64 bit inodes a long time ago
(st_ino is the one field we wouldn't be able to fake).
There may also be an issue with directory cookies, but I don't know