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From: Daniel Palmer <daniel@thingy.jp>
To: w@1wt.eu, linux@weissschuh.net
Cc: linux-kernel@vger.kernel.org, Daniel Palmer <daniel@thingy.jp>
Subject: [PATCH 0/2] nolibc: Add fallocate()
Date: Wed, 15 Apr 2026 23:32:23 +0900	[thread overview]
Message-ID: <20260415143225.561998-1-daniel@thingy.jp> (raw)

While poking around with my "static PIE for nommu" series I found
I needed fallocate(). Implementing it turned out a bit more
interesting than I thought it would be due to how the offset and
size need to be passed on 32bit machines.

I have ran the tests on m68k, arm, arm64, riscv[32|64], x86_64,
i386, x32. I probably missed something, maybe there is a better
way to do this. Maybe it can't actually pass an offset or size
>4GB on x32?

Daniel Palmer (2):
  tools/nolibc: fcntl: Add fallocate()
  selftests/nolibc: Add a very basic test for fallocate()

 tools/include/nolibc/fcntl.h                 | 30 ++++++++++++++++++
 tools/testing/selftests/nolibc/nolibc-test.c | 33 ++++++++++++++++++++
 2 files changed, 63 insertions(+)

-- 
2.51.0


             reply	other threads:[~2026-04-15 14:32 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-15 14:32 Daniel Palmer [this message]
2026-04-15 14:32 ` [PATCH 1/2] tools/nolibc: fcntl: Add fallocate() Daniel Palmer
2026-04-15 15:56   ` Thomas Weißschuh
2026-04-15 14:32 ` [PATCH 2/2] selftests/nolibc: Add a very basic test for fallocate() Daniel Palmer
2026-04-15 15:59   ` Thomas Weißschuh

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