xattr error with rsync

[mabod]

I am moving from encfs to gocryptfs. Today I realized that gocryptfs has issues with extended attributes although the changelog for v1.5, 2018-06-12 says that it supports extended attributes (https://github.com/rfjakob/gocryptfs#changelog)

rsync is throwing the following error when syncing with -X option to a gocryptfs directory:

rsync: rsync_xal_set: lsetxattr("/tmp/aaa/etc/udisks2","trusted.overlay.opaque") failed: Operation not supported (95)
rsync: rsync_xal_set: lsetxattr("/tmp/aaa/etc/xdg","trusted.overlay.origin") failed: Operation not supported (95)

withouth -X the rsync is fine.

[mabod]

...and it does not support ACLs as well. With rsync option -A I get:

rsync: set_acl: sys_acl_set_file(var/log/journal/0505cdc13f324759b3680580649550fd/.system.journal.N18prd, ACL_TYPE_ACCESS): Operation not supported (95)

encfs did support all this. This comes as a real surprise.

[rfjakob]

Hi, thanks for the report. I was honestly not aware that gocryptfs is still missing features compared to encfs.

[rfjakob]

Wrong button, reopening, sorry

[rfjakob]

Up to now, only user xattrs were allowed, but there is really no technical reason for this. I have dropped the restriction in ca9e912 , and ACLs seem to work fine now.

[rfjakob]

For future reference: encfs does not seem to encrypt xattrs, but passes them through as-is.

encfs-mnt$ getfattr -d -m . x
# file: x
security.selinux="system_u:object_r:fusefs_t:s0"
system.posix_acl_access=0sAgAAAAEABgD/////AgAHAAIAAAAEAAQA/////xAABwD/////IAAEAP////8=
user.foo="xxxxxxxxxxxxxxxxxxxxxxxxx"

encfs-cipher$ getfattr -d -m . 23hwMMldZeMJ2BsuFtJ1Ucsd 
# file: 23hwMMldZeMJ2BsuFtJ1Ucsd
security.selinux="unconfined_u:object_r:user_tmp_t:s0"
system.posix_acl_access=0sAgAAAAEABgD/////AgAHAAIAAAAEAAQA/////xAABwD/////IAAEAP////8=
user.foo="xxxxxxxxxxxxxxxxxxxxxxxxx"