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2019-06-22Cleanup: split fstree sort into 2 fstree independend functionsDavid Oberhollenzer
Make tree node list sort and recursive variant available and independend of the fstree_t. This is considered cleaner, since the fstree_t actually isn't needed for any of this and we can just call the recusvie sort on the root instead, and we can use the sort implementation directly for things like the upcoming unit test. Also this commit splits up the merge/sort implementation into a seperate split and merge functions to make the code somewhat more readable. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-22Add test case for fstree_get_pathDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-22simplify SELinux labelingDavid Oberhollenzer
This commit moves the SELinux label code after the tree is sorted and the inode table is generated. Sorting helps to make sure that the tree will always be traversed in a defined, deterministic order and likewise the creation of xattrs happens in a defined, deterministic order. Second, we can now use the inode table instead of having to implement a recursive tree traversal yet again. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-22Add test cases for adding tree node by absolute pathDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-22fix: actually update permissions in fstree add by pathDavid Oberhollenzer
When creating a directory that has previously been created implicitly, actually update the permissions as the documentation says. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-21fix: flipped conditional in tar header parserDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-20Add test case for inode number allocationDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-20Add unit testsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-20simplify and improve canonicalize_nameDavid Oberhollenzer
- Replace scan and memmove with simple automaton - Convert forward to back slashes, lots of file systems treat them equivalenty, this saves us a few more checks down the road - Remove './' path components. We can saveley remove them in a string processing step instead of throwing an error. Also they actually appear often in tar balls, possibly not under user control. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-19Split generic tar code off to static libraryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-19Cleanup: split up fstree.cDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-19Cleanup fstree codeDavid Oberhollenzer
Replace default_$FIELD with a struct stat. Merge the rest of add_node/add_file into mknode and add by path+stat. Expose the mknode function and replace all the duplicated node pointer arithmetic magic with a call to mknode. Plus a generic cleanup by utlizing new util functions. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-18Cleanup fstree file parserDavid Oberhollenzer
- use generic struct stat based tree node add function - simplify some of the parsing code Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-17tar2sqfs: rewrite parser to fill struct stat, create tree node from thatDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-17libfstree: add generic function to add node from struct statDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-16sqfs2tar: cleanup tar header generationDavid Oberhollenzer
- use struct stat instead of tree node - compact some of the code Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15libfstree.a: add function to get struct stat from tree nodeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Update READMEDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Add man page for tar2sqfsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Add utility to turn a POSIX/PAX tar archive into a squashfs imageDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Add man page for sqfs2tarDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Add utility to turn a squashfs image into a POSIX tar archvieDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Move super block version check to sqfs_super_readDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15Move function to padd a file with 0 bytes to libutilDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-15libfstree.a: allow adding a file with no input sourceDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-13Add Makemodule.am for doc/ subdirectoryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-13Bump versionv0.2David Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: pull out common code pathDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: rdsquashfs: move command line option processing to options.cDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: get rid of unsqfs_info_tDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Move file extraction code to generic data_reader_t in libsquashfs.aDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Cleanup dependency handlingDavid Oberhollenzer
Always try to gather all compressor libraries available, but only complain about missing a one if it has been *explicitly* selected. If a compressor has been explicityl disabled, we can still turn it off after checking. Also, rework gensquashfs to set the default compressor based on what's available. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: simplify rdsquashfs unpacking: use existing utility functionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: mkfs: remove redundant header inclusionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: merge rest of block.c into mkfs.cDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: remove rest of sqfs_info_tDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Move write_xattr to libsqfs.aDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Remove sqfs_info_t from xattr writerDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Move data writer to libsqfs.aDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Encapsulate data/fragment processing in data_writer_t data structureDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Split process_file functionDavid Oberhollenzer
Add a generic one that reads and processes N bytes from an input file descriptor. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11Major cleanup of mkfs block processorDavid Oberhollenzer
This commit tries to make the block and fragment processing code a lot more readable by simplifying it as follows. The following pattern is used repeatedly: - Try to compress a block - Write the compressed if smaller (the original otherwise) to a file - Print errors on the way - Set the magic (1 << 24) flag if we wrote the original - Increment the super block byte counter => Move that to a seperate function called "write_compressed" => Move the code to grow the fragment table is moved to a seperate function. => Clearing the fragment buffer is pointless, so remove that The add_fragment/add_block functions are now trivial => Merge them into process_file => Global block counter no longer needed, so remove that too Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: mark input pointer on write_retry as constDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: remove the linked list of fragment relationsDavid Oberhollenzer
Don't need that, we already know the index when we write add the fragment. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11fix: flush the last, unfinished fragment block as wellDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-11cleanup: remove unused prototypesDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10cleanup: move tree deserialization to libsqfs.aDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10Rename table.h to highlevel.hDavid Oberhollenzer
The idea is to move various higher level helper functions there. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10Add generic function to produce a full path from an fstree nodeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-06-10cleanup: move entire fstree serialization to libsqfs.aDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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