Messages in this thread Patch in this message | | | Date | Thu, 24 Aug 2023 20:12:53 -0000 | From | "tip-bot2 for Justin Stitt" <> | Subject | [tip: x86/cleanups] x86/hpet: Refactor code using deprecated strncpy() interface to use strscpy() |
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The following commit has been merged into the x86/cleanups branch of tip:
Commit-ID: 4108d141bfd04cf7b2bbf96e899ee5392f62e8a2 Gitweb: https://git.kernel.org/tip/4108d141bfd04cf7b2bbf96e899ee5392f62e8a2 Author: Justin Stitt <justinstitt@google.com> AuthorDate: Tue, 22 Aug 2023 22:13:36 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Thu, 24 Aug 2023 21:22:40 +02:00
x86/hpet: Refactor code using deprecated strncpy() interface to use strscpy()
`strncpy` is deprecated for use on NUL-terminated destination strings [1].
A suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on its destination buffer argument which is _not_ the case for `strncpy`!
In this case, it is a simple swap from `strncpy` to `strscpy`. There is one slight difference, though. If NUL-padding is a functional requirement here we should opt for `strscpy_pad`. It seems like this shouldn't be needed as I see no obvious signs of any padding being required.
Signed-off-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings[1] Link: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html [2] Link: https://github.com/KSPP/linux/issues/90 Link: https://lore.kernel.org/r/20230822-strncpy-arch-x86-kernel-hpet-v1-1-2c7d3be86f4a@google.com --- arch/x86/kernel/hpet.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index c8eb1ac..1648aa0 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -421,7 +421,7 @@ static void __init hpet_legacy_clockevent_register(struct hpet_channel *hc) * the IO_APIC has been initialized. */ hc->cpu = boot_cpu_data.cpu_index; - strncpy(hc->name, "hpet", sizeof(hc->name)); + strscpy(hc->name, "hpet", sizeof(hc->name)); hpet_init_clockevent(hc, 50); hc->evt.tick_resume = hpet_clkevt_legacy_resume;
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