x86/setup: Use strscpy() to replace deprecated strlcpy()

strlcpy() is marked deprecated and should not be used, because
it doesn't limit the source length.

The preferred interface for when strlcpy()'s return value is not
checked (truncation) is strscpy().

[ mingo: Tweaked the changelog ]

Signed-off-by: XueBing Chen <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: XueBing Chen

arch/x86/kernel/setup.c

@@ -903,18 +903,18 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_CMDLINE_BOOL
 #ifdef CONFIG_CMDLINE_OVERRIDE
-	strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+	strscpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 #else
 	if (builtin_cmdline[0]) {
 		/* append boot loader cmdline to builtin */
 		strlcat(builtin_cmdline, " ", COMMAND_LINE_SIZE);
 		strlcat(builtin_cmdline, boot_command_line, COMMAND_LINE_SIZE);
-		strlcpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
+		strscpy(boot_command_line, builtin_cmdline, COMMAND_LINE_SIZE);
 	}
 #endif
 #endif
 
-	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
+	strscpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
 	*cmdline_p = command_line;
 
 	/*