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authorAkinobu Mita <akinobu.mita@gmail.com>2012-12-17 16:04:23 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-12-17 17:15:26 -0800
commit496f2f93b1cc286f5a4f4f9acdc1e5314978683f (patch)
tree464fa6bd115ad4e3bedc02a0b0796a9f9e055ccc /lib/interval_tree_test_main.c
parent31279b1457f992f24eee8d45ddd647f5fce42cf6 (diff)
downloadlinux-496f2f93b1cc286f5a4f4f9acdc1e5314978683f.tar.gz
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/interval_tree_test_main.c')
-rw-r--r--lib/interval_tree_test_main.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/interval_tree_test_main.c b/lib/interval_tree_test_main.c
index b25903987f7..245900b98c8 100644
--- a/lib/interval_tree_test_main.c
+++ b/lib/interval_tree_test_main.c
@@ -30,7 +30,8 @@ static void init(void)
{
int i;
for (i = 0; i < NODES; i++) {
- u32 a = prandom32(&rnd), b = prandom32(&rnd);
+ u32 a = prandom_u32_state(&rnd);
+ u32 b = prandom_u32_state(&rnd);
if (a <= b) {
nodes[i].start = a;
nodes[i].last = b;
@@ -40,7 +41,7 @@ static void init(void)
}
}
for (i = 0; i < SEARCHES; i++)
- queries[i] = prandom32(&rnd);
+ queries[i] = prandom_u32_state(&rnd);
}
static int interval_tree_test_init(void)
@@ -51,7 +52,7 @@ static int interval_tree_test_init(void)
printk(KERN_ALERT "interval tree insert/remove");
- prandom32_seed(&rnd, 3141592653589793238ULL);
+ prandom_seed_state(&rnd, 3141592653589793238ULL);
init();
time1 = get_cycles();