filename lengths > 255 bytes

[Safari77]

As ZFS 2.3.0 now supports file/dir name lengths of 1023 bytes, how does gocryptfs handle them?
internal/nametransform/longnames.go:ReadLongNameAt() seems to limit them to 255 , but is support for 1023 bytes for gocryptfs possible?

(I am not going to need >255 lengths, but maybe in the future someone will...)

[rfjakob]

Should be no problem in gocryptfs, looks like the FUSE protocol does support long names: https://github.com/i-rinat/longnamefs

…

On Tue, 14 Jan 2025, 10:04 Sami Farin, ***@***.***> wrote: As ZFS 2.3.0 now supports file/dir name lengths of 1023 bytes, how does gocryptfs handle them? internal/nametransform/longnames.go:ReadLongNameAt() seems to limit them to 255 , but is support for 1023 bytes for gocryptfs possible? (I am not going to need >255 lengths, but maybe in the future someone will...) — Reply to this email directly, view it on GitHub <#890>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACGA7ZGEBXT3G2KOBFSXVT2KTHLDAVCNFSM6AAAAABVEM2KD6VHI2DSMVQWIX3LMV43ASLTON2WKOZSG44DMNRQHE4DIOA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[Anuskuss]

After changing

gocryptfs/internal/nametransform/names.go

Line 20 in 13773f4

NameMax = 255

to 1023:

$ mkdir cipher plain
$ ./gocryptfs -init -plaintextnames cipher
$ ./gocryptfs cipher plain
$ touch plain/$(python3 -c 'print("a"*100+"b"*100+"c"*100)')
$ ls cipher
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
gocryptfs.conf
$ ls plain
ls: reading directory 'plain': Invalid request descriptor

It feels like we're almost there. Hopefully the rest can be implemented fairly easily.