change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/arch/um/include/asm/syscall-generic.h
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@@ -1,13 +1,10 @@
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+/* SPDX-License-Identifier: GPL-2.0-only */
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 /*
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  * Access to user system call parameters and results
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  *
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  * See asm-generic/syscall.h for function descriptions.
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  *
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  * Copyright (C) 2015 Mickaël Salaün <mic@digikod.net>
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 #ifndef __UM_SYSCALL_GENERIC_H
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@@ -53,84 +50,30 @@
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 static inline void syscall_get_arguments(struct task_struct *task,
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 					 struct pt_regs *regs,
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-					 unsigned int i, unsigned int n,
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 					 unsigned long *args)
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 {
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 	const struct uml_pt_regs *r = &regs->regs;
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-	switch (i) {
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-	case 0:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG1(r);
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-	case 1:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG2(r);
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-	case 2:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG3(r);
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-	case 3:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG4(r);
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-	case 4:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG5(r);
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-	case 5:
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-		if (!n--)
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-			break;
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-		*args++ = UPT_SYSCALL_ARG6(r);
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-	case 6:
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-		if (!n--)
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-			break;
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-	default:
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-		BUG();
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-		break;
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-	}
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+	*args++ = UPT_SYSCALL_ARG1(r);
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+	*args++ = UPT_SYSCALL_ARG2(r);
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+	*args++ = UPT_SYSCALL_ARG3(r);
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+	*args++ = UPT_SYSCALL_ARG4(r);
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+	*args++ = UPT_SYSCALL_ARG5(r);
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+	*args   = UPT_SYSCALL_ARG6(r);
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 }
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 static inline void syscall_set_arguments(struct task_struct *task,
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 					 struct pt_regs *regs,
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-					 unsigned int i, unsigned int n,
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 					 const unsigned long *args)
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 {
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 	struct uml_pt_regs *r = &regs->regs;
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-	switch (i) {
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-	case 0:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG1(r) = *args++;
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-	case 1:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG2(r) = *args++;
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-	case 2:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG3(r) = *args++;
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-	case 3:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG4(r) = *args++;
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-	case 4:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG5(r) = *args++;
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-	case 5:
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-		if (!n--)
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-			break;
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-		UPT_SYSCALL_ARG6(r) = *args++;
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-	case 6:
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-		if (!n--)
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-			break;
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-	default:
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-		BUG();
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-		break;
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-	}
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+	UPT_SYSCALL_ARG1(r) = *args++;
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+	UPT_SYSCALL_ARG2(r) = *args++;
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+	UPT_SYSCALL_ARG3(r) = *args++;
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+	UPT_SYSCALL_ARG4(r) = *args++;
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+	UPT_SYSCALL_ARG5(r) = *args++;
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+	UPT_SYSCALL_ARG6(r) = *args;
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 }
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 /* See arch/x86/um/asm/syscall.h for syscall_get_arch() definition. */