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`strncpy` is deprecated for use on NUL-terminated destination strings [1] and as such we should prefer more robust and less ambiguous string interfaces. We expect `c2dev->name` to be NUL-terminated based on its usage with format strings: | dev_info(c2dev->dev, "C2 port %s removed\n", c2dev->name); Moreover, NUL-padding is _not_ required as c2dev is zero-allocated: | c2dev = kzalloc(sizeof(struct c2port_device), GFP_KERNEL); Considering the above, a suitable replacement is `strscpy` [2] due to the fact that it guarantees NUL-termination on the destination buffer without unnecessarily NUL-padding. Let's also drop `C2PORT_NAME_LEN - 1` for `sizeof(dest)` which is more idiomatic strscpy usage. Link: https://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 Cc: linux-hardening@vger.kernel.org Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20230927-strncpy-drivers-misc-c2port-core-c-v1-1-978f6d220a54@google.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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| core.c | ||
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