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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>
2023-02-20Remove ostream_printfDavid Oberhollenzer
By cobbling together the xattr lines manually in libtar, the need (and thus the function itself) are removed. 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>
2022-06-03Typo fixDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-06-02Cleanup: libsqfs: sqfs_dir_reader_find_by_pathDavid Oberhollenzer
Split out several repated patterns into helper functions and move the rest of the code back into dir_reader.c Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2022-03-10Windows: redirect standard I/O and convert text to UTF-16David Oberhollenzer
Preprocessor magic is used to redirect putc/fputc/fputs/printf/fprintf to custom implementations. The custom implementations try to figure out if we are printing to the console and, if so, convert the resulting strings to UTF-16 and print them through ConsoleWriteW. If the output is redirected to a file or a pipe, the original (presummed) UTF-8 is kept. Simply setting the console output codepage to UTF-8 does not work, because the standard I/O facilities of MSVCRT either does not support unicode (in non-wchar mode), or has half-broken support through fputs, which can still break up multi-byte sequences through its internal buffering. Likewise, changing the codepage and using ConsoleWriteA, or trying to use fputws did not work in a test VM either. This approach is the one that worked most consistently among the ones tried, but also has problems. E.g. it breaks when setting the codepage to UTF-8 manually (using `chcp 65001`). Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-12-05Add a wrapper for the main function on WindowsDavid Oberhollenzer
A macro and forward declaration are added to compat.h that rename the main() function programs using compat.h into sqfs_tools_main. An actual main() function is added to libcompat.a, that uses the shell API to get the UTF-16 command line arguments, convert them to UTF-8 and call sqfs_tools_main. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-05-16Use *_MAX to remove need for configure-time type size checksMichael Forney
2021-03-24Provide Musl derived fallbacks for getopt/getopt_long/getsuboptDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-03-20Add libcompat fallback implementation for fnmatchDavid Oberhollenzer
This has basically been copied over from Musl and slightly modifed. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-29Replace file/getline usage with istreamDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-16Add stream I/O abstraction libraryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-05-07Fix compilation on GCC4 and belowBrandon Maier
When compiling with GCC4 the following error occurs. > lib/util/rbtree.c:140: undefined reference to `__builtin_uaddl_overflow' This is because __builtin_uaddl_overflow() and the other __builtin_u{add,mul}{,l,ll}_overflow() functions are only defined in GNUC < 5 for Clang. When using GCC4 and below they are not defined. Since the SZ_ADD_OV and SZ_MUL_OV are only used to check 'size_t' type values. And overflow on add and multiply of unsigned types is defined behaviour (C Standard 6.2.5 paragraph 9). It's simple to write overflow functions for this specific case. These are based on the overflow wrappers from the SEI CERT C Standard INT30-C. [1] https://gcc.gnu.org/gcc-5/changes.html Signed-off-by: Brandon Maier <brandon.maier@rockwellcollins.com>
2020-03-10Fix the printf format specifies (again)David Oberhollenzer
The PRIu64 et al are missing a "%" sign in front. Fixes: aaf7e68c75a907c3c08e83dfd2972665a0f1c1a3 Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-03-01Fix printf format specifies for sqfs_u64David Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-12-31Include sys/sysmacros.h on any GNU libc platformPino Toscano
sys/sysmacros.h is an implementation of GNU libc, so include it unconditionally when that libc is used. Signed-off-by: Pino Toscano <toscano.pino@tiscali.it>
2019-11-25Cleanup: remove what is left of libutilDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-25Cleanup: move overflow safe alloc code into libsquashfsDavid Oberhollenzer
There were only a hand full of instances outside libsquashfs that used the alloc code. In most cases, the thing allocated hat its size derived from something already in memory anyway, so it is safe to assume its size fits into a size_t. At the same time, the opencoded Windows path conversion functions are all unified into a single helper function. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-23Fix various data type problemsDavid Oberhollenzer
- Make sure the mockup constant for AT_FDCWD is actualy an int - Don't use %lld printf format specified, mscrt doesn't have that - On 64 bit windows, use %I64u format specified for size_t - Seperate the overflow macro stuff from the form specifier stuff - Move the whole thing to compat.h and clean it up a little so it becomes readable. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-23Add windows implementation for chdir in libcompatDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-23Move some unix header inclusions to compat.hDavid Oberhollenzer
In most cases, including unistd.h and fcntl.h was a left over anyway. In the cases where it was not, move it to compat.h. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-22Add fchownat/fchmodat mockups to libcompat for WindowsDavid Oberhollenzer
Not pretty, but definitely prettier than #ifdef hell. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-11-22Cleanup: move all the compatibillity fluff to a dedicated "libcompat"David Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-10-07Cleanup: move libutil related headers to "util" sub directoryDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2019-09-27Add a header for platform compatibillity fluffDavid Oberhollenzer
- We don't have "endian.h" everywhere. On some BSDs its in sys and on some BSDs the macros have different names. - We definitely don't have sysmacros.h on non-Unix-like systems. - Likewise for sys/types.h, sys/stat.h and their contents. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>