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authorMark Murray <markm@FreeBSD.org>2004-04-09 15:47:10 +0000
committerMark Murray <markm@FreeBSD.org>2004-04-09 15:47:10 +0000
commite7806b4c0eb398aba8b6e8ddeda96e6ddd9305ae (patch)
treef371f8b6d5d4ad0a1bedfd885d8e2ae634e63b27 /sys/dev/random/randomdev.h
parentcd8b53ed2d1f2b5099c4b1889e2df00da1711553 (diff)
Notes
Diffstat (limited to 'sys/dev/random/randomdev.h')
-rw-r--r--sys/dev/random/randomdev.h70
1 files changed, 19 insertions, 51 deletions
diff --git a/sys/dev/random/randomdev.h b/sys/dev/random/randomdev.h
index aa23fc8e7b1b..d5e064fb4643 100644
--- a/sys/dev/random/randomdev.h
+++ b/sys/dev/random/randomdev.h
@@ -1,5 +1,5 @@
/*-
- * Copyright (c) 2001 Mark R V Murray
+ * Copyright (c) 2000-2004 Mark R V Murray
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -30,57 +30,25 @@
* and non algorithm-specific for the entropy processor
*/
-/* #define ENTROPYSOURCE nn entropy sources (actually classes)
- * This is properly defined in
- * an enum in sys/random.h
- */
-
-/* Cryptographic block size in bits */
-#define BLOCKSIZE 256
-
-/* The ring size _MUST_ be a power of 2 */
-#define HARVEST_RING_SIZE 1024 /* harvest ring buffer size */
-#define HARVEST_RING_MASK (HARVEST_RING_SIZE - 1)
-
-#define HARVESTSIZE 16 /* max size of each harvested entropy unit */
+typedef void random_init_func_t(void);
+typedef void random_deinit_func_t(void);
+typedef int random_read_func_t(void *, int);
+typedef void random_write_func_t(void *, int);
+typedef void random_reseed_func_t(void);
-SYSCTL_DECL(_kern_random);
-
-MALLOC_DECLARE(M_ENTROPY);
-
-/* These are used to queue harvested packets of entropy. The entropy
- * buffer size is pretty arbitrary.
- */
-struct harvest {
- uintmax_t somecounter; /* fast counter for clock jitter */
- u_char entropy[HARVESTSIZE]; /* the harvested entropy */
- u_int size, bits, frac; /* stats about the entropy */
- enum esource source; /* stats about the entropy */
- STAILQ_ENTRY(harvest) next; /* next item on the list */
+struct random_systat {
+ struct selinfo rsel;
+ const char *ident;
+ int seeded;
+ random_init_func_t *init;
+ random_deinit_func_t *deinit;
+ random_read_func_t *read;
+ random_write_func_t *write;
+ random_reseed_func_t *reseed;
+ struct mtx lock;
};
-void random_init(void);
-void random_deinit(void);
-void random_init_harvester(void (*)(u_int64_t, void *, u_int, u_int, u_int, enum esource), int (*)(void *, int));
-void random_deinit_harvester(void);
-void random_set_wakeup_exit(void *);
-void random_process_event(struct harvest *event);
-void random_reseed(void);
-void random_unblock(void);
-
-int read_random_real(void *, int);
+extern struct random_systat random_systat;
-/* If this was c++, this would be a template */
-#define RANDOM_CHECK_UINT(name, min, max) \
-static int \
-random_check_uint_##name(SYSCTL_HANDLER_ARGS) \
-{ \
- if (oidp->oid_arg1 != NULL) { \
- if (*(u_int *)(oidp->oid_arg1) <= (min)) \
- *(u_int *)(oidp->oid_arg1) = (min); \
- else if (*(u_int *)(oidp->oid_arg1) > (max)) \
- *(u_int *)(oidp->oid_arg1) = (max); \
- } \
- return sysctl_handle_int(oidp, oidp->oid_arg1, oidp->oid_arg2, \
- req); \
-}
+extern void random_ident_hardware(struct random_systat *);
+extern void random_null_func(void);