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2023-07-03Refactor: rename sqfs_dir_entry_t to sqfs_dir_node_tDavid Oberhollenzer
Exact operation performed: git ls-files -z | \ xargs -0 sed -i -e 's/sqfs_dir_entry_t/sqfs_dir_node_t/g' Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-07-03Consolidate some of the stray integer parsersDavid Oberhollenzer
There are several ad-hoc int/uint parsers scattered around the code, add a single helper function for that task and replace the multiple instances. A simple white-box test case is added for the utility function. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-21Make trim() helpers from get_line available outsideDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-21Add a helper to libutil for splitting token separated linesDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-20Move istream_get_line function to libutilDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-18libsqfs: consistently rename the native file handle functionsDavid Oberhollenzer
Start with a common prefix "sqfs_native_file_*" Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-17Move data writer ostream into libsquashfsDavid Oberhollenzer
It is mainly a very thin wrapper on top of the block processor so far. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-16libsquashfs: merge windows & unix file I/O primitivesDavid Oberhollenzer
By adding additional close/duplicate primitives, the remaining, mostly identical istream/ostream/file code is mostly identical between Windows and Unix and be merged, mostly without stitches. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libcompat: Add a helper to get/set OS error stateDavid Oberhollenzer
On Unix like OSes, this saves/restores errno, on Windows both errno and GetLastError state are saved/restored. This should make it simpler to preserve that across function calls. Additionally, while tracking down uses of GetLastError, some places where the error code was printed out directly where replaced with instances of w32_perror. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15Cleanup: bring some semblance of structure into compat.hDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libsquashfs: cleanup the flag situation on istream/ostream functionsDavid Oberhollenzer
- The ostream creation functions already have flag arguments, but make them an sqfs_u32 instead of int. - Add flag arguments to the istream functions, sanitzie and forward them when opening the handle. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15Migrate file istream/ostream from libio to libsquashfsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15Overhaul sqfs_istream_t/sqfs_ostream_t error handlingDavid Oberhollenzer
Report an error number from the implementations, change the users to forward that error number (which also means libtar write header/link now returns an error code) and all subsequent binaries to use sqfs_perror() instead of relying on the function to print an error internally. Also, make sure to preserve errno/GetLastError() in the implementations and print out a stringified error in sqfs_perror() if the error code indicates an I/O error. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libsquashfs: Add sqfs_open_native_file functionDavid Oberhollenzer
Having a function to interpret the flags and open a native file handle simplifies the istream/ostream/file code which shares that decoding part, particularly on windows where the character set needs to be transformed. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libsquashfs: Add a get_filename function to sqfs_file_tDavid Oberhollenzer
Similar to the sqfs_istream_t & sqfs_ostream_t interfaces. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15Move sqfs_istream_t & sqfs_ostream_t into libsquashfsDavid Oberhollenzer
For now, only the interfaces and helper functions are moved, the concrete implementations remain in libio. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15Mass rename istream_t/ostream_t with sqfs_ prefixDavid Oberhollenzer
istream_t becomes sqfs_istream_t and ostream_t becomes sqfs_ostream_t Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libio: replace OSTREAM_OPEN_* flags with SQFS_FILE_OPEN_* flagsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libio: flip the meaning of the ostream_t sparse flagDavid Oberhollenzer
Instead of "open sparse", make that the default and turn it into a "no sparse" flag. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libio: remove ostream_append_sparse and fallback implementationDavid Oberhollenzer
Instead of a separate append-sparse function, simply accept NULL as an input for append. For both Unix and Win32, a fallback needs to be implemented. For XFRM, we can just memset the input buffer to zero, same for the libsquashfs data writer. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-15libio: remove single line wrapper functionsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-12libio: add open handle functions to istream/ostreamDavid Oberhollenzer
For the backends, this simplifies the code as both paths (open file and open stdio) use the same basic code. Even when merging them only in the backend, it would be done in a similar way. Making the functions public allows other uses as well. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-11libio: move istream buffer logic into interall callbacksDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-11libio: remove precache from istream_advance_bufferDavid Oberhollenzer
Since the user has to call istream_get_buffered_data afterwards anyway, we can do the precache lazily. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-10libio: add desired read size to istream_get_buffered_dataDavid Oberhollenzer
This properly maps to all of our use cases and makes istream_precache obsolete. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-09libio: remove eof flag from istream_t interfaceDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-09libio: eliminate direct access of the interal bufferDavid Oberhollenzer
Instead, go through helper functions, which in a next step can be moved inside the implementation. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-07libsquashfs: Add utility functions to read xattrs into listDavid Oberhollenzer
The common pattern is used in rdsquashfs and sqfs2tar, move the code to libsquashfs. 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>
2023-06-05Move dir_entry_xattr_t from libio to libsquashfsDavid Oberhollenzer
The structure and functions are renamed to sqfs_xattr_* instead, an additional helper is added to accept an encoded xattr. Documentation and unit test are added as well. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-05libio: remove buffer_offset from istream_tDavid Oberhollenzer
Instead, make the buffer const, let the user adjust the pointer and size. The offset can then be inferred in precache. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-04libio: move splice function from ostream to istreamDavid Oberhollenzer
It touches internals of the istream, particularly the buffer, but not of the ostream. It really belongs to istream_t. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-06-04libio: Move istream_t precache logic into backend implementationDavid Oberhollenzer
The end goal is to remove direct buffer access from the istream_t interfaces and make that opaque. For the tar implementation, this already safes us needless buffer copying, as we essentially allow the user to read-through from the underlying stream. 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>
2023-06-01libio: split dir_entry_t from dir_iterator_t, add create helperDavid 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>
2023-05-22libtar: 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>
2023-05-16libtar: replace tar_xattr_t with dir_entry_xattr_t structDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-16libio: add xattr query interface to dir_iterator_tDavid Oberhollenzer
Again, with a dummy implementation for Unix and Windows backends. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-15libio: remove device number from dir_iterator_t, add flag fieldDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-05-14libio: Add a function to open an istream_t from a directory iteratorDavid Oberhollenzer
For the native versions, this is currently dummied out, always returning an error number. The idea is to laster wrap the libtar interface around a directory iterator, here we need that method to support the existing use case in tar2sqfs. 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>
2023-05-05Internalize fstree_mknode, consolidate fstree functionalityDavid Oberhollenzer
The fstree_mknode function is only used internally, remove the declaration from the header and internalize it. The code using it is consolidated into fstree.c. 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>
2023-04-29libutil: Add an option to the dir_tree_iterator_t to add a path prefixDavid Oberhollenzer
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>
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