A new set of tools and libraries for working with SquashFS images https://git.infraroot.at/squashfs-tools-ng.git/atom?h=v1.3.1 2024-05-02T11:51:30+00:00 2024-05-02T11:51:30+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2023-02-15T09:34:30+00:00 urn:sha1:161269971ce4cb9ee9cec9a59d81376d7b7c33aa Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2024-02-09T14:59:37+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2024-02-09T14:59:37+00:00 urn:sha1:ae048f7ac4a9ab6576ca6842aa13e5c9c31e35a7 The idea is to iterate over a (canonicalized) path with forward slashes by components, i.e. file and directory names. Each name is then looked at by iterating over components, i.e. everything between dots. If a component is an illegal name, like COM1 or AUX, we add an underscore. If it contains illegal characters, like : or \, we re-map that character into unicode private use area. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2024-02-09T14:32:41+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2024-02-09T14:24:38+00:00 urn:sha1:48b3355c7a887530a9bd17a1ad571e402102dd95 Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2024-01-24T08:56:10+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2023-01-19T14:18:43+00:00 urn:sha1:d81b85ba4db12c2052a8fdd3b4e77343740d6fba mksquashfs generates extended inodes if a directory contains 256 entries. libsquashfs so far only generated extended inodes if there is no other way to encode it. Mimic the behaviour of mksquashfs by adding a threshold. For this to work, the "sqfs_inode_set_xattr_index" function has to be changed to not immediately try to demote inodes to basic types. The fstree serialization is modified to do that itself if the index is 0xFFFFFFFF and the target is not a directory inode. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-11-22T13:45:32+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-11-22T13:45:32+00:00 urn:sha1:168ef9be32ad754d7bcb38ed70787237fc12630d The "from dir" and from "from file" code, as well as the "sort file" code is specific to gensquashfs, so move them there and the test cases as well. The medium term idea is to reduce libfstree to a stub, merge it into the generic writer and ultimately hoist that into libsquashfs. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-11-17T23:58:13+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-11-17T23:57:01+00:00 urn:sha1:844fdd42f03a633f1dbce5d90b2ecf44698cf8b0 Similar to the hex blob decoder, we need this once for tar and once for the filemap xattr parser. Simply add a single, central implementation to libutil, with a simple unit test, and then use it in both libtar and gensquashfs. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-11-17T23:58:07+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-11-16T14:41:57+00:00 urn:sha1:da6eadc840716eb29b0175f39b2790bba166db4a Since we need it twice (once for tar, once for the filemap xattr parser), add a single, central implementation to libutil, add a unit test for that implementation and then use it in both libtar and gensquashfs. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-09-20T06:47:02+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-09-18T14:04:24+00:00 urn:sha1:56edfefb9718f72bd45093e0efd76bd88645fa89 Slightly modify the byte-for-byte comparison function to compare an arbitrary range in a file and move it to libutil. Instead of calling it for each block in the block writer, simply let it check an entire range in the block writer and compute the range position/size of the reference ahead, before looking for potential matches. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-07-08T17:17:35+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-07-05T13:50:09+00:00 urn:sha1:62753ec36958c40f151fa223605aea5e6a50bd89 Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at> 2022-07-08T17:17:35+00:00 David Oberhollenzer david.oberhollenzer@sigma-star.at 2022-07-05T13:41:41+00:00 urn:sha1:a412425bca4bb90a7c1b35acac6b185158f3cd4f Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>