linux-kernel - [patch V5 01/15] seccomp: Provide stub for __secure

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Date:   Wed, 22 Jul 2020 23:59:55 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, linux-arch@...r.kernel.org,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Mark Rutland <mark.rutland@....com>,
        Kees Cook <keescook@...omium.org>,
        Keno Fischer <keno@...iacomputing.com>,
        Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        Gabriel Krisman Bertazi <krisman@...labora.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Subject: [patch V5 01/15] seccomp: Provide stub for __secure_computing()

From: Thomas Gleixner <tglx@...utronix.de>

To avoid #ifdeffery in the upcoming generic syscall entry work code provide
a stub for __secure_computing() as this is preferred over
secure_computing() because the TIF flag is already evaluated.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Kees Cook <keescook@...omium.org>

---
V4: New patch
---
 include/linux/seccomp.h |    1 +
 1 file changed, 1 insertion(+)

--- a/include/linux/seccomp.h
+++ b/include/linux/seccomp.h
@@ -61,6 +61,7 @@ struct seccomp_filter { };
 
 #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
 static inline int secure_computing(void) { return 0; }
+static inline int __secure_computing(void) { return 0; }
 #else
 static inline void secure_computing_strict(int this_syscall) { return; }
 #endif