Commits on Apr 18, 2024

1. mke2fs: the -d option can now handle tarball input …

   If archive.h is available during compilation, enable mke2fs to read a
   tarball as input. Since libarchive.so.13 is opened with dlopen,
   libarchive is not a hard library dependency of the resulting binary.
   
   In comparison with feeding a directory tree to mke2fs via -d this has
   the following advantages:
   
    - no superuser privileges, nor fakeroot, nor unshared user namespaces
      are needed to create filesystems with arbitrary ownership information
      and special files like device nodes which otherwise require being root
   
    - by reading a tarball from standard input, no temporary files need to
      be written out first as mke2fs can be used as part of a shell pipeline
      which reduces disk usage and makes the conversion independent of the
      underlying file system
   
   A round-trip from tarball to ext4 to tarball yields bit-by-bit identical
   results
   
   Signed-off-by: Johannes Schauer Marin Rodrigues <josch@mister-muffin.de>

   

   josch committed Apr 18, 2024
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