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authorH. Peter Anvin <hpa@zytor.com>2011-08-01 00:54:50 +0400
committerH. Peter Anvin <hpa@zytor.com>2011-08-01 00:54:50 +0400
commit63d77173266c1791f1553e9e8ccea65dc87c4485 (patch)
tree81c69a2f30a9bd8302d690000215b474886d0152 /include/linux/random.h
parent02f8c6aee8df3cdc935e9bdd4f2d020306035dbe (diff)
downloadlinux-63d77173266c1791f1553e9e8ccea65dc87c4485.tar.xz
random: Add support for architectural random hooks
Add support for architecture-specific hooks into the kernel-directed random number generator interfaces. This patchset does not use the architecture random number generator interfaces for the userspace-directed interfaces (/dev/random and /dev/urandom), thus eliminating the need to distinguish between them based on a pool pointer. Changes in version 3: - Moved the hooks from extract_entropy() to get_random_bytes(). - Changes the hooks to inlines. Signed-off-by: H. Peter Anvin <hpa@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Matt Mackall <mpm@selenic.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/random.h')
-rw-r--r--include/linux/random.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/random.h b/include/linux/random.h
index fb7ab9de5f36..079cbba39a28 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -102,6 +102,19 @@ static inline void prandom32_seed(struct rnd_state *state, u64 seed)
state->s3 = __seed(i, 15);
}
+#ifdef CONFIG_ARCH_RANDOM
+# include <asm/archrandom.h>
+#else
+static inline int arch_get_random_long(unsigned long *v)
+{
+ return 0;
+}
+static inline int arch_get_random_int(unsigned int *v)
+{
+ return 0;
+}
+#endif
+
#endif /* __KERNEL___ */
#endif /* _LINUX_RANDOM_H */