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arm64: use {COMPAT,}SYSCALL_DEFINE0 for sigreturn

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We don't currently annotate our various sigreturn functions as syscalls,
as we need to do to use pt_regs syscall wrappers.

Let's mark them as real syscalls.

For compat_sys_sigreturn and compat_sys_rt_sigreturn, this changes the
return type from int to long, matching the prototypes in sys32.c.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Dominik Brodowski <linux@dominikbrodowski.net>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Mark Rutland 2018-07-11 14:56:53 +01:00 committed by Will Deacon
parent 3f7deccb03
commit bf4ce5cc23
2 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm64/kernel/signal.c
View File

@ -539,7 +539,7 @@ static int restore_sigframe(struct pt_regs *regs,
return err;
}
asmlinkage long sys_rt_sigreturn(void)
SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = current_pt_regs();
struct rt_sigframe __user *frame;

4
arch/arm64/kernel/signal32.c
View File

@ -285,7 +285,7 @@ static int compat_restore_sigframe(struct pt_regs *regs,
return err;
}
asmlinkage int compat_sys_sigreturn(void)
COMPAT_SYSCALL_DEFINE0(sigreturn)
{
struct pt_regs *regs = current_pt_regs();
struct compat_sigframe __user *frame;
@ -316,7 +316,7 @@ badframe:
return 0;
}
asmlinkage int compat_sys_rt_sigreturn(void)
COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = current_pt_regs();
struct compat_rt_sigframe __user *frame;