user/sven/linux.git/include/linux/string.h, branch v3.18.9

Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random

2014-10-24T19:33:32Z

Pull /dev/random updates from Ted Ts'o: "This adds a memzero_explicit() call which is guaranteed not to be optimized away by GCC. This is important when we are wiping cryptographically sensitive material" * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random: crypto: memzero_explicit - make sure to clear out sensitive data random: add and use memzero_explicit() for clearing data

random: add and use memzero_explicit() for clearing data

2014-10-17T15:37:29Z

zatimend has reported that in his environment (3.16/gcc4.8.3/corei7) memset() calls which clear out sensitive data in extract_{buf,entropy, entropy_user}() in random driver are being optimized away by gcc. Add a helper memzero_explicit() (similarly as explicit_bzero() variants) that can be used in such cases where a variable with sensitive data is being cleared out in the end. Other use cases might also be in crypto code. [ I have put this into lib/string.c though, as it's always built-in and doesn't need any dependencies then. ] Fixes kernel bugzilla: 82041 Reported-by: zatimend@hotmail.co.uk Signed-off-by: Daniel Borkmann Acked-by: Hannes Frederic Sowa Cc: Alexey Dobriyan Signed-off-by: Theodore Ts'o Cc: stable@vger.kernel.org

lib: string: Make all calls to strnicmp into calls to strncasecmp

2014-10-14T00:18:23Z

The previous patch made strnicmp into a wrapper for strncasecmp. This patch makes all in-tree users of strnicmp call strncasecmp directly, while still making sure that the strnicmp symbol can be used by out-of-tree modules. It should be considered a temporary hack until all in-tree callers have been converted. Signed-off-by: Rasmus Villemoes Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lib: add glibc style strchrnul() variant

2014-05-23T02:23:27Z

The strchrnul() variant helpfully returns a the end of the string instead of a NULL if the requested character is not found. This can simplify string parsing code since it doesn't need to expicitly check for a NULL return. If a valid string pointer is passed in, then a valid null terminated string will always come back out. Signed-off-by: Grant Likely

string: introduce helper to get base file name from given path

2012-12-18T01:15:17Z

There are several places in the kernel that use functionality like basename(3) with the exception: in case of '/foo/bar/' we expect to get an empty string. Let's do it common helper for them. Signed-off-by: Andy Shevchenko Cc: Jason Baron Cc: YAMANE Toshiaki Cc: Greg Kroah-Hartman Cc: Steven Rostedt Cc: Frederic Weisbecker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

UAPI: (Scripted) Disintegrate include/linux

2012-10-13T09:46:48Z

Signed-off-by: David Howells Acked-by: Arnd Bergmann Acked-by: Thomas Gleixner Acked-by: Michael Kerrisk Acked-by: Paul E. McKenney Acked-by: Dave Jones

string: do not export memweight() to userspace

2012-08-21T23:45:03Z

Fix the following warning: usr/include/linux/string.h:8: userspace cannot reference function or variable defined in the kernel Signed-off-by: WANG Cong Acked-by: Akinobu Mita Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

string: introduce memweight()

2012-07-31T00:25:16Z

memweight() is the function that counts the total number of bits set in memory area. Unlike bitmap_weight(), memweight() takes pointer and size in bytes to specify a memory area which does not need to be aligned to long-word boundary. [akpm@linux-foundation.org: rename `w' to `ret'] Signed-off-by: Akinobu Mita Cc: Anders Larsen Cc: Alasdair Kergon Cc: Laurent Pinchart Cc: Mark Fasheh Cc: Joel Becker Cc: Jan Kara Cc: Andreas Dilger Cc: "Theodore Ts'o" Cc: Matthew Wilcox Cc: Mauro Carvalho Chehab Cc: Tony Luck Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

lib/string.c: introduce memchr_inv()

2011-11-01T00:30:47Z

memchr_inv() is mainly used to check whether the whole buffer is filled with just a specified byte. The function name and prototype are stolen from logfs and the implementation is from SLUB. Signed-off-by: Akinobu Mita Acked-by: Christoph Lameter Acked-by: Pekka Enberg Cc: Matt Mackall Acked-by: Joern Engel Cc: Marcin Slusarz Cc: Eric Dumazet Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Add a strtobool function matching semantics of existing in kernel equivalents

2011-05-19T07:25:28Z

This is a rename of the usr_strtobool proposal, which was a renamed, relocated and fixed version of previous kstrtobool RFC Signed-off-by: Jonathan Cameron Signed-off-by: Rusty Russell