Thanks for the report! +cc acl-devel On Thursday, March 14, 2019 2:51:10 PM CET Joerg Schilling wrote: > Trying to unpack the reference archives for the POSIX ACL proposal from > 1993 that was withdrawn in 1997 results in something like: > > /tmp/tar-1.31/src/tar --acls -xpf acl-test3.tar.gz > /tmp/tar-1.31/src/tar: default/dir2: Warnung: Funktion acl_from_text > fehlgeschlagen > /tmp/tar-1.31/src/tar: default/dir3: Warnung: Funktion acl_from_text > fehlgeschlagen > /tmp/tar-1.31/src/tar: default: Warnung: Funktion acl_from_text fehlgeschlagen > /tmp/tar-1.31/src/tar: default: Warnung: Funktion acl_from_text fehlgeschlagen
This is because we use acl_from_text() without pre-filtering, which doesn't accept the fourth UID/GID number value in e.g. ACL record 'user:joe:rwx:503' (stored in the archive): $ tar -t -vv --acls -f acl-test5.tar ... drwxrwxr-x+ gruenbacher/assis 0 2001-11-04 04:43 default/dir2/ a: user::rwx,user:joe:rwx:503,group::r-x,mask::rwx,other::r-x ... $ tar -xf --acls -f acl-test5.tar ... tar: default/dir2: Warning: Cannot acl_from_text: Invalid argument ... I did not notice this so far, since we don't add the fourth numeric argument to the SCHILY.acl.access header; neither star does that (on Linux at least, despite the claim in manual page). I'm curious whether we should think about fixing this in acl_from_text() function directly, or whether this should be handled solely in archivers. Pavel