It appears that toybox tar can't untar archives with files inside non-writable directories. GNU and BSD tar handle this.
The output below is with 0.8.9, but the same thing happens with https://landley.net/toybox/git/commit/a3e5f1b1eaf2. I ran into this while working around `adb push`'s lack of "dereference symlinks" support. https://issuetracker.google.com/120171523 ---8<-------------------------------------- #!/bin/bash set -euo pipefail D=$(mktemp -d) # Create a file inside a non-writable dir. mkdir -p $D/foo/bar echo quux > $D/foo/bar/baz chmod 0555 $D/foo/bar tar -cf $D/foo.tar -C $D foo # Untar with GNU tar. mkdir $D/gnu tar --version tar -xf $D/foo.tar -C $D/gnu cat $D/gnu/foo/bar/baz # And with BSD tar. mkdir $D/bsd bsdtar --version bsdtar -xf $D/foo.tar -C $D/bsd cat $D/bsd/foo/bar/baz # And with toybox tar. mkdir $D/toybox toybox --version toybox tar -xf $D/foo.tar -C $D/toybox cat $D/toybox/foo/bar/baz ---8<-------------------------------------- tar (GNU tar) 1.35 Copyright (C) 2023 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Written by John Gilmore and Jay Fenlason. quux bsdtar 3.7.4 - libarchive 3.7.4 zlib/1.3.1 liblzma/5.8.1 bz2lib/1.0.8 liblz4/1.10.0 libzstd/1.5.6 quux toybox 0.8.9 tar: foo/bar/baz: Permission denied tar: had errors _______________________________________________ Toybox mailing list Toybox@lists.landley.net http://lists.landley.net/listinfo.cgi/toybox-landley.net
