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2023-10-24Cleanup: move xfrm stream wrappers to libxfrmDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-10-24Remove some unused variablesDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-10-24libutil: add a string list helper to replace some of the adhoc onesDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-09-19libtar: accept an sqfs_dir_entry_t instead of a struct statDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-09-19sqfs2tar: replace hierarchy extraction with nested iteratorsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-09-08libsqfs: bring sqfs_file_t in line with stream APIDavid Oberhollenzer
Rename the open function to sqfs_file_open, use an argument for the return pointer and pass back and error number on failure. Also add an inermediate function to open an sqfs_file_t using a handle, similar to the stream API. The get_file_size function is moved to the native wrappers and some of the implementation is cleaned up a little. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-08-10Add a data reader based sqfs_istream_t implementationDavid Oberhollenzer
To the sqfs_data_reader_t is added, an sqfs_istream_t implementation that internally reads through the data reader. The uses of the data_reader_dump function are removed and the function is subsequently removed from libcommon. 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>
2023-06-15Mass 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: remove single line wrapper functionsDavid Oberhollenzer
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>
2023-06-05Move 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>
2023-05-16libtar: replace tar_xattr_t with dir_entry_xattr_t structDavid 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>
2023-01-19Split stream compression out of libioDavid Oberhollenzer
Move it to a separate libxfrm library, where it can be independently tested as well. The bulk of the new code is also mainly test cases for the compressors. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2023-01-19Simplify cleanup on errorDavid Oberhollenzer
The drop/destroy functions support passing in a NULL pointer. 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>
2022-08-20Return an error number from sqfs_tree_find_hard_linksDavid Oberhollenzer
Instead of printing error messages to stderr, simply return an error number instead, that the caller then prints out using sqfs_perror. The underlying rbtree already uses sqfs error numbers, so little change is needed here. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Cleanup: move filename_sane & canonicalize_path functions to libutilDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Make sqfs_tree_node_get_path more robustDavid Oberhollenzer
Test against various invariants: - Every non-root node must have a name - The root node muts not have a name - The name must not be ".." or "." - The name must not contain '/' - The loop that chases parent pointers must terminate, i.e. we must never reach the starting state again (link loop). Furthermore, make sure the sum of all path components plus separators does not overflow. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Move sqfs_tree_node_get_path to libsquashfsDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Cleanup: move inode_stat to sqfs2tarDavid Oberhollenzer
After trying removing many instances of `struct stat`, there is only one user of inode_stat left, so move the function there. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Cleanup: split libtar header, move to sub directoryDavid Oberhollenzer
Some of the on-disk format internals are moved to a separate header and some of the stuff from internal.h is moved to that format header. C++ guards are added in addtion. Everything PAX related is moved to pax_header.c, some internal functions are marked as static. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-07-08Cleanup: rename libfstream to libio, split headersDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-04-10Remove builtin copy of zlibDavid Oberhollenzer
On GNU/Linux, *BSD or MacOS we can simply use the system default library. The copy was primarily only there for the Windows build. The build script for Windows has now been adapted to download and compile a shared library from a tarball. This removes a huge chunk of code from the git tree as well as the release tarballs. Additionally it gets rid of iffy things like removing the Zlib copyright/version strings, so the libsquashfs DLL doesn't export it. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-04-08Fix: libsquashfs: add sqfs_free() functionDavid Oberhollenzer
On systems like Windows, the dynamic library and applications can easily end up being linked against different runtime libraries, so applications cannot be expected to be able to free() any malloc'd pointer that the library returns. This commit adds an sqfs_free function so the application can pass pointers back to the library to call the correct free() implementation. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-02-10Always use the correct data type for realloc return valueDavid Oberhollenzer
This commit mainly serves the static analysis tooling. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-29Update tar2sqfs/sqfs2tar documentationDavid Oberhollenzer
Modify the man pages and help texts to mention compression support, make the help option display a list of supported compressors. Also clarify the squashfs compressor list in the help text to state that the list shows block compressors supported for SquashFS compression. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-17Fix: add missing compiler/linker flagsDavid Oberhollenzer
If tar2sqfs and sqfs2tar want to use comperssion via libfstream, they need to link against the compressor libraries. Also, libfstream may need the apropriate cflags to access the headers on some platforms. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-16Add bzip2 stream compression supportDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-16Implement output compression support for sqfs2tarDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-16Remodel file extraction tools to use libfstreamDavid Oberhollenzer
This commit rewrites the libtar write paths to use libfstream insead of a FILE pointer. Also, the libcommon file extraction function is remodeled to use libfstream. In accordance, rdsquashfs, sqfs2tar and sqfsdiff have some minor adjustments made to work with the ported libtar and libcommon. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-06-11Add flags to functions that might logically be expanded in the futureDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-30sqfs2tar: Move hard link detection to tree-repacking codeDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-30Cleanup: sqfs2tar: break up and simplify the repacking codeDavid Oberhollenzer
- Move the xattr extraction and repacking to xattr.c - Don't on-the-fly delete the tar xattr list, use the function from libtar.a - Split minor tasks into static helper functions - creating a libtar xattr struct from libsqfs xattr data - finding a hard link entry from current path and inode number Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-30Cleanup: Reorganize structure of Automake filesDavid Oberhollenzer
- Split up the huge file in bin/ into one small file per sub directory - Remove the stub in doc/ Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-30Cleanup: move man pages to the respective program source directoriesDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-30Cleanup: try to split sqfs2tar.c in a reasonable wayDavid Oberhollenzer
This comit breaks sqfs2tar into multiple files: - options.c contains the command line argument processing - write_tree.c contains the code for generating the actual tar archive - sqfs2tar.c contains what is left - A header is added for glueing it all together. No actual code is changed. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
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