plougher/squashfs-tools 4.7.5

Squashfs tools 4.7.5

on GitHub

4.7.5 (01 MAR 2026): Bug fix release (mostly)

1. New options & improvements

   1. Mksquashfs/Sqfstar: new -numeric-owner option which uses the numeric uid and gid in the tarfile rather than the user name or the group name.
   2. Error messages produced by the date command and symbolic mode parser printed by the pager rather than to stderr.

2. Major bug fixes

   1. Fix possible corruption of Squashfs filesystems if sparse files present (caused by elimination of "fragment block stall" in 4.7).
   2. Fix pseudo file f/F definition (create file from output of command) when input has greater than a block of contiguous zeros (caused by sparse file reading optimisation in 4.7.3).
   3. Fix issue where files which are larger than available buffer space will not be found to be a duplicate (caused by elimination of "fragment block stall" in 4.7).
   4. Fix broken Mksquashfs -max-depth option.

3. Minor bug fixes

   1. Mksquashfs: segmentation fault if no sources and pseudo file root ("/") definition only defines an Xattr but no metadata.
   2. Mksquashfs/Sqfstar: -offset should be rejected if -stream option used.
   3. Mksquashfs: hard links to symbolic links may be ignored (first access to symbolic link after creation).
   4. Pseudo files: a M (modify with timestamp) definition on a directory causes pseudo file definitions below it in hierarchy to be ignored.
   5. Pseudo files: a m/M modify definition breaks checks that a directory exists and it is a directory (rather than something else).
   6. Mksquashfs: -max-depth option marks empty directories as having excluded files.
   7. Mksquashfs/Sqfstar should produce identical output with only pseudo files.
   8. Define SEEK_DATA if not defined by C library.