add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/mips/kernel/signal_o32.c
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@@ -118,7 +118,7 @@
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 	int err = 0;
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 	frame = get_sigframe(ksig, regs, sizeof(*frame));
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-	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
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+	if (!access_ok(frame, sizeof (*frame)))
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 		return -EFAULT;
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 	err |= setup_sigcontext32(regs, &frame->sf_sc);
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@@ -160,7 +160,7 @@
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 	regs = current_pt_regs();
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 	frame = (struct rt_sigframe32 __user *)regs->regs[29];
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-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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 		goto badframe;
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 	if (__copy_conv_sigset_from_user(&set, &frame->rs_uc.uc_sigmask))
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 		goto badframe;
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@@ -171,7 +171,7 @@
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 	if (sig < 0)
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 		goto badframe;
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 	else if (sig)
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-		force_sig(sig, current);
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+		force_sig(sig);
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 	if (compat_restore_altstack(&frame->rs_uc.uc_stack))
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 		goto badframe;
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@@ -187,7 +187,7 @@
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 	/* Unreached */
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 badframe:
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-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
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 }
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 static int setup_rt_frame_32(void *sig_return, struct ksignal *ksig,
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@@ -197,7 +197,7 @@
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 	int err = 0;
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 	frame = get_sigframe(ksig, regs, sizeof(*frame));
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-	if (!access_ok(VERIFY_WRITE, frame, sizeof (*frame)))
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+	if (!access_ok(frame, sizeof (*frame)))
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 		return -EFAULT;
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 	/* Convert (siginfo_t -> compat_siginfo_t) and copy to user. */
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@@ -262,7 +262,7 @@
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 	regs = current_pt_regs();
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 	frame = (struct sigframe32 __user *)regs->regs[29];
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-	if (!access_ok(VERIFY_READ, frame, sizeof(*frame)))
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+	if (!access_ok(frame, sizeof(*frame)))
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 		goto badframe;
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 	if (__copy_conv_sigset_from_user(&blocked, &frame->sf_mask))
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 		goto badframe;
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@@ -273,7 +273,7 @@
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 	if (sig < 0)
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 		goto badframe;
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 	else if (sig)
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-		force_sig(sig, current);
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+		force_sig(sig);
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 	/*
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 	 * Don't let your children do this ...
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@@ -286,5 +286,5 @@
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 	/* Unreached */
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 badframe:
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-	force_sig(SIGSEGV, current);
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+	force_sig(SIGSEGV);
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 }