arm64: uapi: expose our struct ucontext to the uapi headers

arm64 defines its own ucontext structure which is incompatible with the
struct defined (and exposed to userspace by) the asm-generic headers.

glibc carries its own struct definition that is compatible with the
arm64 definition, but we should expose our format in the uapi headers in
case other libraries want to make use of the ucontext pushed as part of
an arm64 sigframe.

This patch moves the arm64 asm/ucontext.h to the uapi headers, along
with the necessary #include of linux/types.h.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Marcus Shawcroft <marcus.shawcroft@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm64/include/asm/ucontext.h b/arch/arm64/include/asm/ucontext.h
deleted file mode 100644 (file)
index 42e04c8..0000000
--- a/arch/arm64/include/asm/ucontext.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2012 ARM Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#ifndef __ASM_UCONTEXT_H
-#define __ASM_UCONTEXT_H
-
-struct ucontext {
-       unsigned long     uc_flags;
-       struct ucontext  *uc_link;
-       stack_t           uc_stack;
-       sigset_t          uc_sigmask;
-       /* glibc uses a 1024-bit sigset_t */
-       __u8              __unused[1024 / 8 - sizeof(sigset_t)];
-       /* last for future expansion */
-       struct sigcontext uc_mcontext;
-};
-
-#endif /* __ASM_UCONTEXT_H */

diff --git a/arch/arm64/include/uapi/asm/Kbuild b/arch/arm64/include/uapi/asm/Kbuild
index 942376d37d220fc359c6afc35ef3004c9a2074a2..825b0fe51c2b41643dd38e05dd52f4fe2c48707e 100644 (file)
--- a/arch/arm64/include/uapi/asm/Kbuild
+++ b/arch/arm64/include/uapi/asm/Kbuild
@@ -18,4 +18,5 @@ header-y += siginfo.h
 header-y += signal.h
 header-y += stat.h
 header-y += statfs.h
+header-y += ucontext.h
 header-y += unistd.h

diff --git a/arch/arm64/include/uapi/asm/ucontext.h b/arch/arm64/include/uapi/asm/ucontext.h
new file mode 100644 (file)
index 0000000..791de8e
--- /dev/null
+++ b/arch/arm64/include/uapi/asm/ucontext.h
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2012 ARM Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef _UAPI__ASM_UCONTEXT_H
+#define _UAPI__ASM_UCONTEXT_H
+
+#include <linux/types.h>
+
+struct ucontext {
+       unsigned long     uc_flags;
+       struct ucontext  *uc_link;
+       stack_t           uc_stack;
+       sigset_t          uc_sigmask;
+       /* glibc uses a 1024-bit sigset_t */
+       __u8              __unused[1024 / 8 - sizeof(sigset_t)];
+       /* last for future expansion */
+       struct sigcontext uc_mcontext;
+};
+
+#endif /* _UAPI__ASM_UCONTEXT_H */