Given that the only documentation which refers to the default behavior
of extended attributes is only included upstream and is not shipped in
the Debian or Ubuntu package I'm closing this bug as Invalid.
** Changed in: tar (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1831150
Title:
its undocumented that only user.* extended attributes are restored
upon extraction
Status in GNU tar:
Unknown
Status in tar package in Ubuntu:
Invalid
Status in tar package in Debian:
New
Bug description:
The tar info page and upstream documentation indicate that when
--xattr is used "all names are stored in the archive (or extracted, if
using '--extract')", however when using --xattr with extract the
security.capability extended attributes are not restored. If one also
uses "--xattrs-include=*" then the security.capability extended
attributes will be restored.
[Test Case]
mkdir orig restore
touch orig/file_with_capability_and_user_xattr
setcap cap_net_raw=p orig/file_with_capability_and_user_xattr
(eoan-amd64)root@impulse:/tmp# getfattr -m . -d
orig/file_with_capability_and_user_xattr
# file: orig/file_with_capability_and_user_xattr
security.capability=0sAAAAAgAgAAAAAAAAAAAAAAAAAAA=
user.testkey="testvalue"
(eoan-amd64)root@impulse:/tmp# tar c --xattrs --acls --directory orig/ . |
tar x --xattrs --acls --directory restore/
(eoan-amd64)root@impulse:/tmp# getfattr -m . -d
restore/file_with_capability_and_user_xattr
# file: restore/file_with_capability_and_user_xattr
user.testkey="testvalue"
(eoan-amd64)root@impulse:/tmp# tar c --xattrs --directory orig/ . | tar x
--xattrs --xattrs-include=* --directory restore/
(eoan-amd64)root@impulse:/tmp# getfattr -m . -d
restore/file_with_capability_and_user_xattr
# file: restore/file_with_capability_and_user_xattr
security.capability=0sAAAAAgAgAAAAAAAAAAAAAAAAAAA=
user.testkey="testvalue"
I think tar's extract behavior should be changed to match that of
create so that all names are actually extracted.
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