linux-kernel - [PATCH] syscalls: add sys_ni_posix

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Date:   Wed,  7 Jun 2023 16:28:45 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Richard Henderson <richard.henderson@...aro.org>,
        Ivan Kokshaysky <ink@...assic.park.msu.ru>,
        Matt Turner <mattst88@...il.com>,
        Kees Cook <keescook@...omium.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Borislav Petkov <bp@...e.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jann Horn <jannh@...gle.com>, linux-alpha@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-api@...r.kernel.org
Subject: [PATCH] syscalls: add sys_ni_posix_timers prototype

From: Arnd Bergmann <arnd@...db.de>

The sys_ni_posix_timers() definition causes a warning when
the declaration is missing, so this needs to be added
along with the normal syscalls, outside of the #ifdef.

kernel/time/posix-stubs.c:26:17: error: no previous prototype for 'sys_ni_posix_timers' [-Werror=missing-prototypes]

Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
I missed sending this out in the initial submission of my Wmissing-prototype patches
---
 arch/alpha/kernel/osf_sys.c | 2 --
 include/linux/syscalls.h    | 1 +
 kernel/time/posix-stubs.c   | 1 +
 3 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 2a9a877a05083..d98701ee36c6a 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -1014,8 +1014,6 @@ SYSCALL_DEFINE2(osf_settimeofday, struct timeval32 __user *, tv,
 	return do_sys_settimeofday64(tv ? &kts : NULL, tz ? &ktz : NULL);
 }
 
-asmlinkage long sys_ni_posix_timers(void);
-
 SYSCALL_DEFINE2(osf_utimes, const char __user *, filename,
 		struct timeval32 __user *, tvs)
 {
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 4627b9cf4b4d9..712f4e1dc6a69 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -1286,6 +1286,7 @@ asmlinkage long sys_ni_syscall(void);
 
 #endif /* CONFIG_ARCH_HAS_SYSCALL_WRAPPER */
 
+asmlinkage long sys_ni_posix_timers(void);
 
 /*
  * Kernel code should not call syscalls (i.e., sys_xyzyyz()) directly.
diff --git a/kernel/time/posix-stubs.c b/kernel/time/posix-stubs.c
index 828aeecbd1e8a..39769b2d1005e 100644
--- a/kernel/time/posix-stubs.c
+++ b/kernel/time/posix-stubs.c
@@ -16,6 +16,7 @@
 #include <linux/posix-timers.h>
 #include <linux/time_namespace.h>
 #include <linux/compat.h>
+#include <linux/syscalls.h>
 
 #ifdef CONFIG_ARCH_HAS_SYSCALL_WRAPPER
 /* Architectures may override SYS_NI and COMPAT_SYS_NI */
-- 
2.39.2