diff options
author | Akinobu Mita <akinobu.mita@gmail.com> | 2012-12-18 01:04:23 +0100 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-18 02:15:26 +0100 |
commit | 496f2f93b1cc286f5a4f4f9acdc1e5314978683f (patch) | |
tree | 464fa6bd115ad4e3bedc02a0b0796a9f9e055ccc /lib/rbtree_test.c | |
parent | aoe: fix use after free in aoedev_by_aoeaddr() (diff) | |
download | linux-496f2f93b1cc286f5a4f4f9acdc1e5314978683f.tar.xz linux-496f2f93b1cc286f5a4f4f9acdc1e5314978683f.zip |
random32: rename random32 to prandom
This renames all random32 functions to have 'prandom_' prefix as follows:
void prandom_seed(u32 seed); /* rename from srandom32() */
u32 prandom_u32(void); /* rename from random32() */
void prandom_seed_state(struct rnd_state *state, u64 seed);
/* rename from prandom32_seed() */
u32 prandom_u32_state(struct rnd_state *state);
/* rename from prandom32() */
The purpose of this renaming is to prevent some kernel developers from
assuming that prandom32() and random32() might imply that only
prandom32() was the one using a pseudo-random number generator by
prandom32's "p", and the result may be a very embarassing security
exposure. This concern was expressed by Theodore Ts'o.
And furthermore, I'm going to introduce new functions for getting the
requested number of pseudo-random bytes. If I continue to use both
prandom32 and random32 prefixes for these functions, the confusion
is getting worse.
As a result of this renaming, "prandom_" is the common prefix for
pseudo-random number library.
Currently, srandom32() and random32() are preserved because it is
difficult to rename too many users at once.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Robert Love <robert.w.love@intel.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: David Laight <david.laight@aculab.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/rbtree_test.c')
-rw-r--r-- | lib/rbtree_test.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c index d7f491a54579..af38aedbd874 100644 --- a/lib/rbtree_test.c +++ b/lib/rbtree_test.c @@ -96,8 +96,8 @@ static void init(void) { int i; for (i = 0; i < NODES; i++) { - nodes[i].key = prandom32(&rnd); - nodes[i].val = prandom32(&rnd); + nodes[i].key = prandom_u32_state(&rnd); + nodes[i].val = prandom_u32_state(&rnd); } } @@ -155,7 +155,7 @@ static int rbtree_test_init(void) printk(KERN_ALERT "rbtree testing"); - prandom32_seed(&rnd, 3141592653589793238ULL); + prandom_seed_state(&rnd, 3141592653589793238ULL); init(); time1 = get_cycles(); |