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authorAl Viro <viro@zeniv.linux.org.uk>2012-11-20 14:24:26 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-19 18:07:41 -0500
commitc40702c49faef05ae324f121d8b3e215244ee152 (patch)
treeb0b2a51b07e944497da5cb48fb461963a3762cad /include/linux
parent9026843952adac5b123c7b8dc961e5c15828d9e1 (diff)
downloadblackbird-op-linux-c40702c49faef05ae324f121d8b3e215244ee152.tar.gz
blackbird-op-linux-c40702c49faef05ae324f121d8b3e215244ee152.zip
new helpers: __save_altstack/__compat_save_altstack, switch x86 and um to those
note that they are relying on access_ok() already checked by caller. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/compat.h1
-rw-r--r--include/linux/signal.h1
2 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/compat.h b/include/linux/compat.h
index cb5637e2ee2c..334813307ec1 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -647,6 +647,7 @@ asmlinkage long compat_sys_sigaltstack(const compat_stack_t __user *uss_ptr,
compat_stack_t __user *uoss_ptr);
int compat_restore_altstack(const compat_stack_t __user *uss);
+int __compat_save_altstack(compat_stack_t __user *, unsigned long);
#endif
#else
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 5969522136fe..0a89ffc48466 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -386,5 +386,6 @@ int unhandled_signal(struct task_struct *tsk, int sig);
void signals_init(void);
int restore_altstack(const stack_t __user *);
+int __save_altstack(stack_t __user *, unsigned long);
#endif /* _LINUX_SIGNAL_H */
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