mbox series

[0/6,v2] asm-generic: strncpy_from_user/strnlen_user cleanup

Message ID 20210515101803.924427-1-arnd@kernel.org
Headers show
Series asm-generic: strncpy_from_user/strnlen_user cleanup | expand

Message

Arnd Bergmann May 15, 2021, 10:17 a.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

As I've queued up some patches for asm-generic, I remembered an
older series that I created but never submitted.

These two functions appear to be unnecessarily different between
architectures, and the asm-generic version is a bit questionable,
even for NOMMU architectures.

Clean this up to just use the generic library version for anything
that uses the generic version today. I've expanded on the patch
descriptions a little, as suggested by Christoph Hellwig, but I
suspect a more detailed review would uncover additional problems
with the custom versions that are getting removed.

       Arnd

Arnd Bergmann (6):
  [v2] asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user
  [v2] h8300: remove stale strncpy_from_user
  [v2] hexagon: use generic strncpy/strnlen from_user
  [v2] arc: use generic strncpy/strnlen from_user
  [v2] asm-generic: uaccess: remove inline
    strncpy_from_user/strnlen_user
  [v2] asm-generic: remove extra strn{cpy_from,len}_user declarations

 arch/arc/Kconfig                    |   2 +
 arch/arc/include/asm/uaccess.h      |  72 ----------------
 arch/arc/mm/extable.c               |  12 ---
 arch/h8300/Kconfig                  |   2 +
 arch/h8300/kernel/h8300_ksyms.c     |   2 -
 arch/h8300/lib/Makefile             |   2 +-
 arch/h8300/lib/strncpy.S            |  35 --------
 arch/hexagon/Kconfig                |   2 +
 arch/hexagon/include/asm/uaccess.h  |  31 -------
 arch/hexagon/kernel/hexagon_ksyms.c |   1 -
 arch/hexagon/mm/Makefile            |   2 +-
 arch/hexagon/mm/strnlen_user.S      | 126 ----------------------------
 arch/m68k/Kconfig                   |   4 +-
 arch/riscv/Kconfig                  |   4 +-
 arch/um/include/asm/uaccess.h       |   5 +-
 arch/um/kernel/skas/uaccess.c       |   5 +-
 include/asm-generic/uaccess.h       |  52 ++----------
 17 files changed, 25 insertions(+), 334 deletions(-)
 delete mode 100644 arch/h8300/lib/strncpy.S
 delete mode 100644 arch/hexagon/mm/strnlen_user.S