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Subject[PATCH 3/3] x86: signal: make do_rt_sigreturn()
From: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>

make do_rt_sigreturn() to collect common part of sys_rt_sigreturn().

Signed-off-by: Hiroshi Shimamoto <h-shimamoto@ct.jp.nec.com>
---
arch/x86/kernel/signal_32.c | 12 +++++++++---
arch/x86/kernel/signal_64.c | 11 ++++++++---
2 files changed, 17 insertions(+), 6 deletions(-)
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c
index d433861..da3cf32 100644
--- a/arch/x86/kernel/signal_32.c
+++ b/arch/x86/kernel/signal_32.c
@@ -215,9 +215,8 @@ badframe:
return 0;
}

-asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+static long do_rt_sigreturn(struct pt_regs *regs)
{
- struct pt_regs *regs = (struct pt_regs *)&__unused;
struct rt_sigframe __user *frame;
unsigned long ax;
sigset_t set;
@@ -243,10 +242,17 @@ asmlinkage int sys_rt_sigreturn(unsigned long __unused)
return ax;

badframe:
- signal_fault(regs, frame, "rt sigreturn");
+ signal_fault(regs, frame, "rt_sigreturn");
return 0;
}

+asmlinkage int sys_rt_sigreturn(unsigned long __unused)
+{
+ struct pt_regs *regs = (struct pt_regs *)&__unused;
+
+ return do_rt_sigreturn(regs);
+}
+
/*
* Set up a signal frame.
*/
diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c
index a21c851..bf77d47 100644
--- a/arch/x86/kernel/signal_64.c
+++ b/arch/x86/kernel/signal_64.c
@@ -104,11 +104,11 @@ restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc,
return err;
}

-asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+static long do_rt_sigreturn(struct pt_regs *regs)
{
struct rt_sigframe __user *frame;
- sigset_t set;
unsigned long ax;
+ sigset_t set;

frame = (struct rt_sigframe __user *)(regs->sp - sizeof(long));
if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
@@ -131,10 +131,15 @@ asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
return ax;

badframe:
- signal_fault(regs, frame, "sigreturn");
+ signal_fault(regs, frame, "rt_sigreturn");
return 0;
}

+asmlinkage long sys_rt_sigreturn(struct pt_regs *regs)
+{
+ return do_rt_sigreturn(regs);
+}
+
/*
* Set up a signal frame.
*/
--
1.5.6


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