1 files changed, 109 insertions, 0 deletions
diff --git a/include/linux/random.h b/include/linux/random.h
new file mode 100644
index 00000000..8f74538c
--- /dev/null
+++ b/include/linux/random.h
@@ -0,0 +1,109 @@
+/*
+ * include/linux/random.h
+ *
+ * Include file for the random number generator.
+ */
+
+#ifndef _LINUX_RANDOM_H
+#define _LINUX_RANDOM_H
+
+#include <linux/types.h>
+#include <linux/ioctl.h>
+#include <linux/irqnr.h>
+
+/* ioctl()'s for the random number generator */
+
+/* Get the entropy count. */
+#define RNDGETENTCNT	_IOR( 'R', 0x00, int )
+
+/* Add to (or subtract from) the entropy count.  (Superuser only.) */
+#define RNDADDTOENTCNT	_IOW( 'R', 0x01, int )
+
+/* Get the contents of the entropy pool.  (Superuser only.) */
+#define RNDGETPOOL	_IOR( 'R', 0x02, int [2] )
+
+/* 
+ * Write bytes into the entropy pool and add to the entropy count.
+ * (Superuser only.)
+ */
+#define RNDADDENTROPY	_IOW( 'R', 0x03, int [2] )
+
+/* Clear entropy count to 0.  (Superuser only.) */
+#define RNDZAPENTCNT	_IO( 'R', 0x04 )
+
+/* Clear the entropy pool and associated counters.  (Superuser only.) */
+#define RNDCLEARPOOL	_IO( 'R', 0x06 )
+
+struct rand_pool_info {
+	int	entropy_count;
+	int	buf_size;
+	__u32	buf[0];
+};
+
+struct rnd_state {
+	__u32 s1, s2, s3;
+};
+
+/* Exported functions */
+
+#ifdef __KERNEL__
+
+extern void rand_initialize_irq(int irq);
+
+extern void add_input_randomness(unsigned int type, unsigned int code,
+				 unsigned int value);
+extern void add_interrupt_randomness(int irq);
+
+extern void get_random_bytes(void *buf, int nbytes);
+void generate_random_uuid(unsigned char uuid_out[16]);
+
+#ifndef MODULE
+extern const struct file_operations random_fops, urandom_fops;
+#endif
+
+unsigned int get_random_int(void);
+unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
+
+u32 random32(void);
+void srandom32(u32 seed);
+
+u32 prandom32(struct rnd_state *);
+
+/*
+ * Handle minimum values for seeds
+ */
+static inline u32 __seed(u32 x, u32 m)
+{
+	return (x < m) ? x + m : x;
+}
+
+/**
+ * prandom32_seed - set seed for prandom32().
+ * @state: pointer to state structure to receive the seed.
+ * @seed: arbitrary 64-bit value to use as a seed.
+ */
+static inline void prandom32_seed(struct rnd_state *state, u64 seed)
+{
+	u32 i = (seed >> 32) ^ (seed << 10) ^ seed;
+
+	state->s1 = __seed(i, 1);
+	state->s2 = __seed(i, 7);
+	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 */