Package: bup Version: 0.32-3 Severity: important Tags: upstream X-Debbugs-Cc: [email protected]
bup upstream has released two related point releases of bup (0.32.1, 0.33.1) which more correctly save and restore POSIX1e ACLs. bup 0.32 (oldstable) and bup 0.33 (stable, unstable) are currently affected and should be updated to the point releases. The upstream notes for 0.32.1 [0] and 0.33.1 [1] are reproduced below. [0]: https://github.com/bup/bup/blob/main/note/0.32.1-from-0.32.md [1]: https://github.com/bup/bup/blob/main/note/0.33.1-from-0.33.md Notable changes in 0.32.1 since 0.32 ==================================== Bugs ---- * POSIX1e ACLs should be restored more correctly now. Previously bup incorrectly restored default (`ACL_TYPE_DEFAULT`) ACLs as access acls (`ACL_TYPE_ACCESS`). When both existed, it restored the access ACL first and then the default ACL as an access ACL. Now, bup should restore each with the proper type. This issue only affects saves created on platforms where bup currently supports ACLs, so presumably mostly just saves created on Linux since the current ACL support depends on non-standard functions like `acl_extended(3)`. There is one remaining issue, which isn't fixed in this release, but is fixed in 0.33.1 (because fixing it here could create saves that are backward incompatible with 0.33). The problem is that in this version and older versions, bup stores ACLs in the `acl_to_any_text(3)` format with a newline delimiter, when the standard (and `acl_from_text(3)` which restore depends on) requires commas. This may cause restores that include ACLs (likely only those from Linux right now) to fail on some platforms (e.g. Cygwin). Notable changes in 0.33.1 since 0.33 ==================================== Bugs ---- * POSIX1e ACLs should be restored correctly now. Previously there were two problems. First, bup incorrectly restored default (`ACL_TYPE_DEFAULT`) ACLs as access acls (`ACL_TYPE_ACCESS`). When both existed, it restored the access ACL first and then the default ACL as an access ACL. Now, bup should restore each with the proper type. This issue only affects saves created on platforms where bup currently supports ACLs, so presumably mostly just saves created on Linux since the current ACL support depends on non-standard functions like `acl_extended(3)`. Second, bup stored ACLs in the `acl_to_any_text(3)` format with a newlne delimiter, when the standard (and `acl_from_text(3)` which restore depends on) requires commas. Now bup uses commas, and translates previously created saves during restore when possible. If a previously created ACL entry contains a comma, then bup will give up, report an error, and skip it. If nothing else, this could cause restores of relevant saves to fail on some platforms.
