busybox-w32/include, branch cng_backend

Use Windows library for cryptographic checksums

2025-06-09T12:23:49+00:00

Add a new feature to libbb, FEATURE_USE_CNG_API, which enables the use of the Cryptography API: Next Generation library to calculate checksums. It is disabled by default except in the mingw64u default config, as the API requires Windows 10+ to function. Usage of this API provides a size benefit and delegates hardware optimizations to the operating system cryptography library. Based on GitHub PR #498 by rfl890. Saves 4064 bytes in the mingw64u case.

Merge branch 'busybox' into merge

2025-05-19T07:34:32+00:00

libbb/archival: make setup_unzip_on_fd() return bytes read if not compressed

2025-04-20T21:49:33+00:00

setup_unzip_on_fd() does not return the transformer structure, so the user does not know how much to seek back (or alternatively what the signature was) when compressor signature is not detected. Currently not needed (the only user is tar which dies anyway). However, rpm2cpio may need this if we extend it to extract the internal .cpio even if cpio's compressions algo is not known. function old new delta setup_unzip_on_fd 53 59 +6 Signed-off-by: Denys Vlasenko

win32: retry when command needs elevated privileges

2025-02-03T11:55:28+00:00

Some installer programs have an entry in their manifest to indicate that they need elevated privileges. The shell in busybox-w32 was unable to run such programs. When a program fails to run with ERROR_ELEVATION_REQUIRED, try again using ShellExecuteEx() with the 'runas' verb to give it elevated privileges. Adds 272-288 bytes. (GitHub issue #481)

ash: match behaviour of cmd.exe in cd builtin

2024-11-19T09:18:56+00:00

The Windows API strips trailing dots and spaces from the last component of a path. cmd.exe handles this quirk when changing directory by adjusting its idea of the current directory to match reality. The shell in busybox-w32 didn't do this, leading to some confusion. Fix the shell's cd builtin so it works more like cmd.exe. Adds 64-80 bytes. (GitHub issue #478)

test: code shrink supplementary groups

2024-10-09T07:22:14+00:00

Since we don't use is_in_supplementary_groups() there's no need for the cached_groupinfo structure to include the members required for its support or for them to be initialised. Saves 32 bytes.

Merge branch 'busybox' into merge

2024-10-08T11:09:30+00:00

libbb: code shrink supplementary group test

2024-10-08T09:22:27+00:00

Recent upstream changes to file permission tests added a function to check and cache values in the supplementary group list. The implementation of getgroups() in the Windows port adds no useful information beyond what can be obtained by checking the current effective gid, which all callers of the new function already do. The function can be replaced with a simple 'FALSE'. Saves 232-288 bytes.

Merge branch 'busybox' into merge

2024-10-08T07:47:44+00:00

libbb: modify find_executable() to not temporarily write to PATH

2024-10-08T02:03:17+00:00

This allows to simplify "which" applet code function old new delta find_executable 93 111 +18 which_main 191 177 -14 builtin_source 316 294 -22 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 1/2 up/down: 18/-36) Total: -18 bytes Signed-off-by: Denys Vlasenko