linux-kernel - [PATCH] uml: Fix build with recent glibc

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Message-Id: <20180301030844.23448-1-andi@firstfloor.org>
Date:   Wed, 28 Feb 2018 19:08:44 -0800
From:   Andi Kleen <andi@...stfloor.org>
To:     richard@....at
Cc:     linux-kernel@...r.kernel.org,
        user-mode-linux-devel@...ts.sourceforge.net,
        Andi Kleen <ak@...ux.intel.com>
Subject: [PATCH] uml: Fix build with recent glibc

From: Andi Kleen <ak@...ux.intel.com>

Newer glibc did some include namespace "cleanups" and removed
struct ucontext and friends. This already broke a lot of software,
and UML seems to be the latest victim.

Use the typedefs which are still available. They also work on
older glibcs.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
 arch/um/os-Linux/signal.c | 2 +-
 arch/x86/um/stub_segv.c   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index a86d7cc2c2d8..a5c0c909c48b 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -159,7 +159,7 @@ static void (*handlers[_NSIG])(int sig, struct siginfo *si, mcontext_t *mc) = {
 
 static void hard_handler(int sig, siginfo_t *si, void *p)
 {
-	struct ucontext *uc = p;
+	ucontext_t *uc = p;
 	mcontext_t *mc = &uc->uc_mcontext;
 	unsigned long pending = 1UL << sig;
 
diff --git a/arch/x86/um/stub_segv.c b/arch/x86/um/stub_segv.c
index 1518d2805ae8..fd6825537b97 100644
--- a/arch/x86/um/stub_segv.c
+++ b/arch/x86/um/stub_segv.c
@@ -10,7 +10,7 @@
 void __attribute__ ((__section__ (".__syscall_stub")))
 stub_segv_handler(int sig, siginfo_t *info, void *p)
 {
-	struct ucontext *uc = p;
+	ucontext_t *uc = p;
 
 	GET_FAULTINFO_FROM_MC(*((struct faultinfo *) STUB_DATA),
 			      &uc->uc_mcontext);
-- 
2.14.3