diff options
Diffstat (limited to 'sys/dev/random/random_harvestq.c')
| -rw-r--r-- | sys/dev/random/random_harvestq.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/sys/dev/random/random_harvestq.c b/sys/dev/random/random_harvestq.c index b7b8381..2638ea3 100644 --- a/sys/dev/random/random_harvestq.c +++ b/sys/dev/random/random_harvestq.c @@ -81,6 +81,8 @@ int random_kthread_control = 0; static struct proc *random_kthread_proc; +static event_proc_f random_cb; + #ifdef RANDOM_RWFILE static const char *entropy_files[] = { "/entropy", @@ -219,7 +221,7 @@ random_kthread(void *arg) void random_harvestq_init(event_proc_f cb) { - int error, i; + int i; struct harvest *np; /* Initialise the harvest fifos */ @@ -238,13 +240,26 @@ random_harvestq_init(event_proc_f cb) mtx_init(&harvest_mtx, "entropy harvest mutex", NULL, MTX_SPIN); + random_cb = cb; +} + +static void +random_harvestq_start_kproc(void *arg __unused) +{ + int error; + + if (random_cb == NULL) + return; + /* Start the hash/reseed thread */ - error = kproc_create(random_kthread, cb, + error = kproc_create(random_kthread, random_cb, &random_kthread_proc, RFHIGHPID, 0, "rand_harvestq"); /* RANDOM_CSPRNG_NAME */ if (error != 0) panic("Cannot create entropy maintenance thread."); } +SYSINIT(random_kthread, SI_SUB_DRIVERS, SI_ORDER_ANY, + random_harvestq_start_kproc, NULL); void random_harvestq_deinit(void) @@ -265,6 +280,17 @@ random_harvestq_deinit(void) } harvestfifo.count = 0; + /* + * Command the hash/reseed thread to end and wait for it to finish + */ + mtx_lock_spin(&harvest_mtx); + if (random_kthread_proc != NULL) { + random_kthread_control = -1; + msleep_spin((void *)&random_kthread_control, &harvest_mtx, + "term", 0); + } + mtx_unlock_spin(&harvest_mtx); + mtx_destroy(&harvest_mtx); } |
