linux-kernel - [PATCH 0/8] bootconfig: Update for the recent reports

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Date:   Thu, 20 Feb 2020 16:26:23 +0900
From:   Masami Hiramatsu <mhiramat@...nel.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     Geert Uytterhoeven <geert@...ux-m68k.org>,
        Borislav Petkov <bp@...en8.de>,
        LKML <linux-kernel@...r.kernel.org>,
        Ingo Molnar <mingo@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 0/8] bootconfig: Update for the recent reports

Hello,

Here are some patches to update bootconfig. There are
several implementation changes and syntax fix/updates.

As we discussed in the previous thread, modifies bootconfig.

 - [1/8] Make CONFIG_BOOT_CONFIG=n by default
 - [2/8] Add magic word for bootconfig
 - [8/8] Print array as multiple commands for
         legacy command line

With the magic word, we can identify bootconfig without
checksum, also if we find a wrong bootconfig, there is no
reason to suppress the error message anymore.

 - [3/8] Remove unneeded error message silencer
 - [4/8] Remove unneeded checksum

In addition, I found some issues on bootconfig syntax, so
fix it. (these also include testcase update)

 - [5/8] Reject if subkey and value has same parent
 - [6/8] Overwrite value on same key by default
 - [7/8] Add append value operator ("+=")

To update synchronously, each patch includes code, test
and documentation. If it is better to split (especially
documentation). please let me know.

TODO: support kernel builtin bootconfig. Should we reuse
firmware builtin loader? But it seems we just need a Makefile.

Thank you,

---

Masami Hiramatsu (8):
      bootconfig: Set CONFIG_BOOT_CONFIG=n by default
      bootconfig: Add bootconfig magic word for indicating bootconfig explicitly
      tools/bootconfig: Remove unneeded error message silencer
      bootconfig: Remove unneeded checksum
      bootconfig: Reject subkey and value on same parent key
      bootconfig: Overwrite value on same key by default
      bootconfig: Add append value operator support
      bootconfig: Print array as multiple commands for legacy command line


 Documentation/admin-guide/bootconfig.rst     |   37 +++++++++++-
 include/linux/bootconfig.h                   |    3 +
 init/Kconfig                                 |    2 -
 init/main.c                                  |   54 +++++++-----------
 kernel/trace/Kconfig                         |    3 +
 lib/bootconfig.c                             |   44 +++++++++++----
 tools/bootconfig/include/linux/printk.h      |    5 --
 tools/bootconfig/main.c                      |   77 +++++++++++---------------
 tools/bootconfig/samples/bad-mixed-kv1.bconf |    3 +
 tools/bootconfig/samples/bad-mixed-kv2.bconf |    3 +
 tools/bootconfig/test-bootconfig.sh          |   31 +++++++++-
 11 files changed, 164 insertions(+), 98 deletions(-)
 create mode 100644 tools/bootconfig/samples/bad-mixed-kv1.bconf
 create mode 100644 tools/bootconfig/samples/bad-mixed-kv2.bconf

--
Masami Hiramatsu (Linaro) <mhiramat@...nel.org>