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authorLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 15:13:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-01 15:13:02 -0700
commit4cdc4cc2ad35f92338497d53d3e8b7876cf2a51d (patch)
tree6d603bb48eeed47a4d37547c3a96c79800a2390f /lib
parent57c78a234e809e3a0516491e37ae5ccc6eeb21e8 (diff)
parent8f76f9c46952659dd925c21c3f62a0d05a3f3e71 (diff)
downloadlinux-4cdc4cc2ad35f92338497d53d3e8b7876cf2a51d.tar.gz
Merge tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic updates from Arnd Bergmann:
 "The main content for 5.15 is a series that cleans up the handling of
  strncpy_from_user() and strnlen_user(), removing a lot of slightly
  incorrect versions of these in favor of the lib/strn*.c helpers that
  implement these correctly and more efficiently.

  The only architectures that retain a private version now are mips,
  ia64, um and parisc. I had offered to convert those at all, but Thomas
  Bogendoerfer wanted to keep the mips version for the moment until he
  had a chance to do regression testing.

  The branch also contains two patches for bitops and for ffs()"

* tag 'asm-generic-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  bitops/non-atomic: make @nr unsigned to avoid any DIV
  asm-generic: ffs: Drop bogus reference to ffz location
  asm-generic: reverse GENERIC_{STRNCPY_FROM,STRNLEN}_USER symbols
  asm-generic: remove extra strn{cpy_from,len}_user declarations
  asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user
  s390: use generic strncpy/strnlen from_user
  microblaze: use generic strncpy/strnlen from_user
  csky: use generic strncpy/strnlen from_user
  arc: use generic strncpy/strnlen from_user
  hexagon: use generic strncpy/strnlen from_user
  h8300: remove stale strncpy_from_user
  asm-generic/uaccess.h: remove __strncpy_from_user/__strnlen_user
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig10
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/Kconfig b/lib/Kconfig
index 5c9c0687f76d..5e7165e6a346 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -50,12 +50,18 @@ config HAVE_ARCH_BITREVERSE
 	  This option enables the use of hardware bit-reversal instructions on
 	  architectures which support such operations.
 
-config GENERIC_STRNCPY_FROM_USER
+config ARCH_HAS_STRNCPY_FROM_USER
 	bool
 
-config GENERIC_STRNLEN_USER
+config ARCH_HAS_STRNLEN_USER
 	bool
 
+config GENERIC_STRNCPY_FROM_USER
+	def_bool !ARCH_HAS_STRNCPY_FROM_USER
+
+config GENERIC_STRNLEN_USER
+	def_bool !ARCH_HAS_STRNLEN_USER
+
 config GENERIC_NET_UTILS
 	bool