diff options
Diffstat (limited to 'sys/dev/random/randomdev.c')
| -rw-r--r-- | sys/dev/random/randomdev.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sys/dev/random/randomdev.c b/sys/dev/random/randomdev.c index c84f4bd..645cfb0 100644 --- a/sys/dev/random/randomdev.c +++ b/sys/dev/random/randomdev.c @@ -46,6 +46,7 @@ #include <dev/randomdev/yarrow.h> +static d_open_t random_open; static d_read_t random_read; static d_write_t random_write; @@ -54,7 +55,7 @@ static d_write_t random_write; #define URANDOM_MINOR 4 static struct cdevsw random_cdevsw = { - /* open */ (d_open_t *)nullop, + /* open */ random_open, /* close */ (d_close_t *)nullop, /* read */ random_read, /* write */ random_write, @@ -83,11 +84,20 @@ SYSCTL_INT(_kern_random_yarrow, OID_AUTO, bins, CTLFLAG_RW, SYSCTL_INT(_kern_random_yarrow, OID_AUTO, fastthresh, CTLFLAG_RW, &random_state.pool[0].thresh, 100, "Fast pool reseed threshhold"); SYSCTL_INT(_kern_random_yarrow, OID_AUTO, slowthresh, CTLFLAG_RW, - &random_state.pool[1].thresh, 100, "Slow pool reseed threshhold"); + &random_state.pool[1].thresh, 160, "Slow pool reseed threshhold"); SYSCTL_INT(_kern_random_yarrow, OID_AUTO, slowoverthresh, CTLFLAG_RW, &random_state.slowoverthresh, 2, "Slow pool over-threshhold reseed"); static int +random_open(dev_t dev, int flags, int fmt, struct proc *p) +{ + if ((flags & FWRITE) && (securelevel > 0 || suser(p))) + return EPERM; + else + return 0; +} + +static int random_read(dev_t dev, struct uio *uio, int flag) { u_int c, ret; |
