ALSA: hda/tegra: refactor deprecated strncpy

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`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`!

It should be noted that the current implementation is unlikely to have a
bug because `drv_name` is a string literal with a size of 9 while
`card->driver` has a size of 16. However, it is probably worthwhile to
switch to a more robust and less ambiguous interface.

[1]: www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
[2]: https://manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html

Link: https://github.com/KSPP/linux/issues/90
Cc: linux-hardening@vger.kernel.org
Signed-off-by: Justin Stitt <justinstitt@google.com>
Link: https://lore.kernel.org/r/20230807-sound-pci-hda-v1-1-6d9cdcd085ca@google.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Justin Stitt 2023-08-07 17:49:28 +00:00 • committed by Takashi Iwai

parent f95d5efa9f

commit 3d28c46631

1 changed files with 2 additions and 2 deletions

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sound/pci/hda/hda_tegra.c

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