linux-kernel - [PATCH 0/8] nolibc: small updates required for the self-tests

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Date:   Mon, 21 Mar 2022 18:33:06 +0100
From:   Willy Tarreau <w@....eu>
To:     "Paul E . McKenney" <paulmck@...nel.org>
Cc:     linux-kernel@...r.kernel.org, Ammar Faizi <ammarfaizi2@...weeb.org>
Subject: [PATCH 0/8] nolibc: small updates required for the self-tests

Hello Paul,

while developing the nolibc self-tests, I naturally faced a few
limitations ranging from missing POLL* flags to missing strcmp() or
getenv(), as well as the ability for printf() to print "(null)" on
"%s" instead of crashing.

This series adds a makefile and a headers installation target that
creates a sysroot made of kernel headers and nolibc headers, which
significantly ease building programs.

I already have some test code with roughly 75 tests, but I find it
misplaced in the nolibc dir, I need to move it to testing/selftests/
before sending it to you.

This series is intended to be an add-on to what you already have in your
dev branch. I don't intend to send you much more stuff on top of this,
but I expect to see an update from Ammar's patch set (CCed). With all
this I think we'll have a good basis to easily add new tests.

Thanks!
Willy

---
Willy Tarreau (8):
  tools/nolibc/stdio: make printf(%s) accept NULL
  tools/nolibc/stdlib: add a simple getenv() implementation
  tools/nolibc/stdio: add support for '%p' to vfprintf()
  tools/nolibc/string: add strcmp() and strncmp()
  tools/nolibc/sys: add syscall definition for getppid()
  tools/nolibc/types: add poll() and waitpid() flag definitions
  tools/nolibc: add a makefile to install headers
  tools/nolibc: add the nolibc subdir to the common Makefile

 tools/Makefile                |  4 ++++
 tools/include/nolibc/Makefile | 43 +++++++++++++++++++++++++++++++++++
 tools/include/nolibc/stdio.h  | 32 +++++++++++++++++---------
 tools/include/nolibc/stdlib.h | 23 +++++++++++++++++++
 tools/include/nolibc/string.h | 23 +++++++++++++++++++
 tools/include/nolibc/sys.h    | 17 ++++++++++++++
 tools/include/nolibc/types.h  | 10 ++++++++
 7 files changed, 141 insertions(+), 11 deletions(-)
 create mode 100644 tools/include/nolibc/Makefile

-- 
2.35.1