overflow: Add STACK_FLEX_ARRAY_SIZE() helper

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Add new STACK_FLEX_ARRAY_SIZE() helper to get the size of a
flexible-array member defined using DEFINE_FLEX()/DEFINE_RAW_FLEX()
at compile time.

This is essentially the same as ARRAY_SIZE() but for on-stack
flexible-array members.

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/83d53744e11c80eb3f03765238cbe648855f4168.1745355442.git.gustavoars@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>

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Gustavo A. R. Silva 2025-04-22 15:05:18 -06:00 • committed by Kees Cook

parent ccf1d2b4a1

commit 190faecf64

1 changed files with 15 additions and 0 deletions

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include/linux/overflow.h

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