[PATCH 0/7] ALSA: remove remaining strlcat() users under sound/

[Mahad Ibrahim <mahad.ibrahim.dev@gmail.com>]

strlcat() is deprecated and slated for removal once its remaining
users are converted.  This series converts the sound/ users outside
of ASoC.

Each site is converted to an explicit offset plus a bounded copy:
strscpy() where the appended text has no format specifiers, and
scnprintf() where it does or where the resulting length is needed.

After this series the only remaining strlcat() user under sound/ is
sound/soc/codecs/wm_adsp_fw_find_test.c, which goes via ASoC.

Build-tested with allmodconfig and boot-tested on x86_64.

The generated strings were checked against the pre-patch code in a
userspace harness for empty, whitespace-padded, exact-fit and
oversized inputs, and came out identical.  No audio hardware was
available here, so the drivers themselves have not been exercised at
runtime.

Mahad Ibrahim (7):
  ALSA: ump: replace strlcat() with strscpy()
  ALSA: ac97: replace strlcat() with scnprintf()
  ALSA: cmipci: replace strlcat() with strscpy()
  ALSA: caiaq: replace strlcat() with strscpy()
  ALSA: usb-audio: replace strlcat() with append_ctl_name()
  ALSA: hiface: replace strlcat() with scnprintf()
  ALSA: usb-audio: replace strlcat() in longname construction

 sound/core/ump.c            |  7 +++++--
 sound/pci/ac97/ac97_codec.c |  8 ++++----
 sound/pci/cmipci.c          |  8 ++++++--
 sound/usb/caiaq/input.c     |  5 +++--
 sound/usb/card.c            | 27 +++++++++++++++++----------
 sound/usb/hiface/chip.c     |  4 ++--
 sound/usb/mixer.c           |  8 ++++++--
 7 files changed, 43 insertions(+), 24 deletions(-)

-- 
2.54.0