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Message-Id: <20260105-uapi-limits-v1-1-023bc7a13037@linutronix.de>
Date: Mon, 05 Jan 2026 09:26:47 +0100
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Simon Horman <horms@...nel.org>,
Andrew Lunn <andrew@...n.ch>, Pablo Neira Ayuso <pablo@...filter.org>,
Jozsef Kadlecsik <kadlec@...filter.org>, Florian Westphal <fw@...len.de>,
Phil Sutter <phil@....cc>
Cc: Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
netdev@...r.kernel.org, netfilter-devel@...r.kernel.org,
coreteam@...filter.org,
Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH RFC net-next 1/3] uapi: add INT_MAX and INT_MIN constants
Some UAPI headers use INT_MAX and INT_MIN. Currently they include
<limits.h> for their definitions, which introduces a problematic
dependency on libc.
Add custom, namespaced definitions of INT_MAX and INT_MIN using the
same values as the regular kernel code.
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
include/uapi/linux/limits.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/include/uapi/linux/limits.h b/include/uapi/linux/limits.h
index 6bcbe3068761..35ffa2667309 100644
--- a/include/uapi/linux/limits.h
+++ b/include/uapi/linux/limits.h
@@ -18,4 +18,7 @@
#define RTSIG_MAX 32
+#define __KERNEL_INT_MAX ((int)(~0U >> 1))
+#define __KERNEL_INT_MIN (-__KERNEL_INT_MAX - 1)
+
#endif
--
2.52.0
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