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 <chenxuebing@jari.cn>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/730f0fef.a33.180fa69880f.Coremail.chenxuebing@jari.cn

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 249981b..3ebb853 100644 (file)
--- a/arch/x86/kernel/setup.c
+++ b/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;
 
        /*