4a6f9d2516
The RNG can't actually be seeded from a shell script, due to the reliance on ioctls. For this reason, Busybox 1.36.0 contains SeedRNG, a tiny program meant to be called at startup and shutdown (and at arbitrary other points in between if desired). Note that initially, the way seedrng was included in busybox broke things quite severely, but now it's been reverted to a reasonably acceptable version. This is a significant improvement over the current init script, which doesn't credit entropy and whose hashing in shell scripts is sort of fragile. Because seedrng is part of busybox, urandom-scripts now depends on BR2_PACKAGE_BUSYBOX. This can be removed again if later we add a standalone seedrng package. Add a decent explanation to the init script about the need for a persistent directory to make this actually work. Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com> [Arnout: - Remove busybox patch, it's now part of busybox 1.36.0. - Depend on busybox. - Fix shellcheck errors. - Use DAEMON and SEEDRNG_ARGS. - Don't bother with "seed_dir" and "skip_credit" variables. - Rename to S20seedrng. ] Signed-off-by: Arnout Vandecappelle <arnout@mind.be> |
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| boot | ||
| configs | ||
| docs | ||
| fs | ||
| linux | ||
| package | ||
| support | ||
| system | ||
| toolchain | ||
| utils | ||
| .checkpackageignore | ||
| .clang-format | ||
| .defconfig | ||
| .flake8 | ||
| .gitignore | ||
| .gitlab-ci.yml | ||
| .shellcheckrc | ||
| CHANGES | ||
| Config.in | ||
| Config.in.legacy | ||
| COPYING | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.legacy | ||
| README | ||
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches