From: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Date: Mon, 22 Dec 2025 07:55:10 +0000 (+0100)
Subject: ipc/shm: uapi: remove dependency on libc
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1965bbb8f3c72e5f1972b5eeb6f19a36664a676d;p=thirdparty%2Fkernel%2Flinux.git

ipc/shm: uapi: remove dependency on libc

Using libc types and headers from the UAPI headers is problematic as it
introduces a dependency on a full C toolchain.  shm.h does not even use
any symbols from the libc header as the usage of getpagesize() was removed
a decade ago in commit 060028bac94b ("ipc/shm.c: increase the defaults for
SHMALL, SHMMAX")

Drop the unnecessary inclusion.

Link: https://lkml.kernel.org/r/20251222-uapi-shm-v1-1-270bb7f75d97@linutronix.de
Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/include/uapi/linux/shm.h b/include/uapi/linux/shm.h
index 8d1f17a4e08ec..7269f9f402e3a 100644
--- a/include/uapi/linux/shm.h
+++ b/include/uapi/linux/shm.h
@@ -5,9 +5,6 @@
 #include <linux/ipc.h>
 #include <linux/errno.h>
 #include <asm-generic/hugetlb_encode.h>
-#ifndef __KERNEL__
-#include <unistd.h>
-#endif
 
 /*
  * SHMMNI, SHMMAX and SHMALL are default upper limits which can be