diff options
Diffstat (limited to 'share/examples/kld')
| -rw-r--r-- | share/examples/kld/random_adaptor/random_adaptor_example.c | 54 |
1 files changed, 39 insertions, 15 deletions
diff --git a/share/examples/kld/random_adaptor/random_adaptor_example.c b/share/examples/kld/random_adaptor/random_adaptor_example.c index da588a87fe5d..34993c17b9da 100644 --- a/share/examples/kld/random_adaptor/random_adaptor_example.c +++ b/share/examples/kld/random_adaptor/random_adaptor_example.c @@ -35,17 +35,20 @@ __FBSDID("$FreeBSD$"); #include <sys/random.h> #include <sys/systm.h> -#include <dev/random/live_entropy_sources.h> -#include <dev/random/random_adaptors.h> #include <dev/random/randomdev.h> +#include <dev/random/randomdev_soft.h> +#include <dev/random/random_adaptors.h> +#include <dev/random/live_entropy_sources.h> -static int random_example_read(void *, int); +static void live_random_example_init(void); +static void live_random_example_deinit(void); +static u_int live_random_example_read(void *, u_int); -struct random_adaptor random_example = { - .ident = "Example RNG", - .source = RANDOM_PURE_BOGUS, /* Make sure this is in - * sys/random.h and is unique */ - .read = random_example_read, +struct random_adaptor live_random_example = { + .les_ident = "Example RNG", + .les_source = RANDOM_PURE_BOGUS, /* Make sure this is in + * sys/random.h and is unique */ + .les_read = live_random_example_read, }; /* @@ -58,8 +61,26 @@ getRandomNumber(void) return 4; /* chosen by fair dice roll, guaranteed to be random */ } -static int -random_example_read(void *buf, int c) +static void +live_random_example_init(void) +{ + + /* Do initialisation stuff here */ +} + +static void +live_random_example_deinit(void) +{ + + /* Do de-initialisation stuff here */ +} + +/* get <c> bytes of random stuff into <buf>. You may presume + * that <c> is a multiple of 2^n, with n>=3. A typical value + * is c=16. + */ +static u_int +live_random_example_read(void *buf, u_int c) { uint8_t *b; int count; @@ -69,22 +90,23 @@ random_example_read(void *buf, int c) for (count = 0; count < c; count++) b[count] = getRandomNumber(); - printf("returning %d bytes of pure randomness\n", c); + /* printf("returning %d bytes of pure randomness\n", c); */ return (c); } +/* ARGSUSED */ static int -random_example_modevent(module_t mod, int type, void *unused) +live_random_example_modevent(module_t mod __unused, int type, void *unused __unused) { int error = 0; switch (type) { case MOD_LOAD: - live_entropy_source_register(&random_example); + live_entropy_source_register(&live_random_example); break; case MOD_UNLOAD: - live_entropy_source_deregister(&random_example); + live_entropy_source_deregister(&live_random_example); break; case MOD_SHUTDOWN: @@ -98,4 +120,6 @@ random_example_modevent(module_t mod, int type, void *unused) return (error); } -LIVE_ENTROPY_SRC_MODULE(live_entropy_source_example, random_example_modevent, 1); +DEV_MODULE(live_random_example, live_random_example_modevent, NULL); +MODULE_VERSION(live_random_example, 1); +MODULE_DEPEND(live_random_example, randomdev, 1, 1, 1); |