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2023-06-05gensquashfs: replace XattrMapEntry with sqfs_xattr_tDavid Oberhollenzer
It has the same members, but with the added benefit that we already have helper functions for it in libsquashfs and we can just hose it directly into the xattr writer. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-05libsqfs: Add an xattr writer function to add a combined key-value structDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-03libio: consolidate add-hoc memory istream_t implementationsDavid Oberhollenzer
In several places, there are ad-hoc istream_t implementations that read from a memory buffer to test something else stacked on top. This commit consolidates those ad-hoc implmentations into a proper one in libio, and uses the chance to remove external files for some older tests that rely on file I/O instead. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-01Cleanup some redundant header inclusionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-30libfstree: accept dir_entry_t instead of path and struct statDavid Oberhollenzer
Because the dir_entry_t also has a flag for had links, the regular node and hard-link node interface can be unified. This simplifies the users of libfstree (gensquashfs, tar2sqfs) since we can simply hose the entries from an iterator directly into the tree. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-30gensquashfs: simplify parsing of glob flagsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-30gensquashfs: Cleanup glob error handlingDavid Oberhollenzer
Move the error handling to the end of the function, make sure we properly handle all allocation failures. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-30gensquashfs: split glob related code from fstree_from_file.cDavid Oberhollenzer
The glob function and everything associated is moved to a separate file, the entry point exposed any the special case handling is removed from the other callbacks in fstree_from_file.c Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-22libtar: add a dir_iterator_t implementation for tar filesDavid Oberhollenzer
The existing istream_t wrapper is mered into this one as well, we can open the files via the iterators open_file_ro function. Unit tests and tar2sqfs are modified accordingly. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-14libio: Move skip function into dir_iterator_t base interfaceDavid Oberhollenzer
For regular iterator types, it's a no-op, for the tree iterator, it skips the sub tree. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-14libio: merge directory iterator headers, document API and behaviorDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-13Move directory iterator from libutil to libioDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-30Move the pattern matching from gensquashfs to dir_tree_iterator_tDavid Oberhollenzer
A simple unit test is added that mainly checks for the behavior of recursing into a sub-tree and only matching the children at the end, but not reporting the parents that don't match. The behavior is inteded to immitate the `find` command. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: use prefix functionality for glob_files target nodeDavid Oberhollenzer
Piece together the prefix path and pass it to the iterator. That way, we get the full target paths back from the iterator and can use those directly in the callback for filtering. We also no longer need the root node for fstree_from_dir (always tree root) and the callback can no longer return an error state. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29Move dir entry remapping from gensquashfs to libutilDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: Dismantle the scan_dir wrapperDavid Oberhollenzer
Create the directory iterator externally and pass it to fstree_from_dir. The unit test is also removed, because the heavy lifting is now done outside the function. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: Move the scan_dir callback before creating the nodeDavid Oberhollenzer
This way, we can remove the discard_node function and simplify the scan_dir code further. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: Remove flag handling from scan_dirDavid Oberhollenzer
The logic was previously there to allow recursing into directories that exist in the fstree and the scanned directory, but not create new directories. Because the dir_tree_iterator_t supports reporting contents but not directories (and does DFS), we can simply check if the parent of the directory exists. Under normal DFS, it must exist, because we created it earlier. If we are skipping the directory entries, it only exists if it was there earlier and we can skip entries that have a non-existant parent, retainint the old behavior. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: Remove fstree_from_subdirDavid Oberhollenzer
It is only used in the glob function, so assemble the path there and jus tuse fstree_from_dir. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29Move type based filtering to libutil dir_tree_iterator_tDavid Oberhollenzer
Limited unit testing for the flags is added, particularly the abillity to recurse into sub-directories, but not report the parents as individual entries. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: use stacked tree iterator in fstree_from_dirDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29gensquashfs: simplify sort_file_listDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-29Fix: gensquashfs: sort by file breaking up the directory listDavid Oberhollenzer
When inserting the selected entry, the next_by_type pointer is supposed to be cleared, but the code accidentaly broke up the next pointer, removing the element from the tree. Fixes: e1e655b02f6c54177f9070eeb221ab95c6d4e20f Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-21libutil: unix: simplify/unify directory iterator error handlingDavid Oberhollenzer
Instead of printing out error messages, return an errro ID and match the behavior with the Windows implementation. Also, don't check first if the struct stat says it is a link, the readlinkat() system call will fail if it isn't. Avoid confusing the deputy. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-21libutil: Add a method to the directory iterator to open a sub directoryDavid Oberhollenzer
This is also the reason we need to lug around the original directory path on Windows. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-19libfstree: hoist file link pointer into parent structureDavid Oberhollenzer
Instead of having a file_info_t next pointer, requiring an up-cast to tree_node_t all the time, simply add a "next_by_type" pointer to the tree node itself, which can also be used for other purposes by other node types and removes the need for up-casting. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-19libfstree: Change file_info_t already_matched into flagDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-19libfstree: get rid of dir_info_tDavid Oberhollenzer
The single boolean created_implicitly can be replaced with a general purpose flag field. The "children" pointer can then be hoisted directly into the data union of tree_node_t. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-17fstree_from_dir: Move the recursion step into scan_dirDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-17Remove the remainder of the Win32 fstree_from_dir implementationDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-17Implement a version of the directory iterator for UnixDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Merge Windows and Unix implementations of fstree_from_subdirDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Copy the dir scan pattern from the Windows implementationDavid Oberhollenzer
If we look at a sub directory, piece totether the full path and open that instead. This allows us to move the directory open into the scan function and get rid of the dirfd trickery. Also pull the recusion step out into the parent function. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Cleanup: gensquashfs: split readlink handling out of directory scanDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12gensquashfs: merge some of the Windows and Unix entry filtering codeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Win32: gensquashfs: Merge fstree_from_dir and subdir implementationsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Split out Windows directory iteration code to a dir_iterator_t typeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-12Fix fstree defaults usage in Windows version of fstree_from_dirDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-06libfstree: Move left over dirscan flags to gensquashfsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-04Move scan callback from libfstree to gensquashfsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-02Move fstree CLI code to libcommonDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-04-01libsquashfs: remove the default block writer alignment featureDavid Oberhollenzer
The idea of the block align feature was to allow micro-managing that some files are forcefully aligned to 1k/4k ("device block") boundaries, hoping to improve access time at the cost of data density. The feature was not exposed in the tools for a long time and eventuall added to the sort file. Measurement and experimentation showed, that it in fact worsened the read performance on a test system with an old micro SD card as the bottle neck. The feature is removed, and if needed, can be brought back simply by wrapping/sub-classing the default block writer, if need be.. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-02-12libtar: Add a test for the tar writing codeDavid Oberhollenzer
Generate a simple tarball and compare it with a reference. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-02-08libtar: Add an istream_t implementationDavid Oberhollenzer
The tar_istream_t reads the data from a tar file, having been given the header, and synthesizes zero bytes for sparse regions. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-01-31Reintegrate test code with library codeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-01-31Move library source into src sub-directoryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-01-19Implement rudimentary reference counting for sqfs_object_tDavid Oberhollenzer
Implement grab/drop functions to increase/decrease reference count and destroy the object if the count drops to 0. Make sure that all objects that maintain internal references actually grab that reference, duplicate it in the copy function, drop it in the destroy handler. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-11-22Move gensquashfs specific code from libfstree to gensquashfsDavid Oberhollenzer
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>
2022-11-21filemap xattr: slightly improve error reportingDavid Oberhollenzer
- When printing an error, specify the filename and line number - Always print an error, including out of memory conditions - Fail if we encounter a line that we don't recognize Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-11-21filemap xattr: use sqfs_u8 data type for xattr value blobsDavid Oberhollenzer
The xattr values are not strings, they are arbitrary byte blobs. To be on the safe side tough, we should still allocate the space for the extra null byte and propperly initialize the buffer. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>