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authorWill Deacon <will.deacon@arm.com>2015-01-16 13:52:14 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2015-01-23 18:07:49 +0000
commit33b36543df336d9158e1a763fe97251885f52c5c (patch)
tree48a3347ceb58603a0246f6c8744dac2f655b2204 /arch/arm64/include/uapi
parent0aaf0dae81b586134faeb52e28b7ad567629dd68 (diff)
downloadlinux-33b36543df336d9158e1a763fe97251885f52c5c.tar.gz
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>
Diffstat (limited to 'arch/arm64/include/uapi')
-rw-r--r--arch/arm64/include/uapi/asm/Kbuild1
-rw-r--r--arch/arm64/include/uapi/asm/ucontext.h32
2 files changed, 33 insertions, 0 deletions
diff --git a/arch/arm64/include/uapi/asm/Kbuild b/arch/arm64/include/uapi/asm/Kbuild
index 942376d37d22..825b0fe51c2b 100644
--- 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
index 000000000000..791de8e89e35
--- /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 */