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entropy(9): Allow changing flags on all entropy sources at once. 

Entropy sources should all have nonempty names, and this will enable
an operator to, for example, disable all but a specific entropy
source.

XXX pullup-10
This commit is contained in:
riastradh 2023-03-03 12:52:49 +00:00
parent f8079ac547
commit 30c052bdf9
1 changed files with 5 additions and 3 deletions
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8
sys/kern/kern_entropy.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_entropy.c,v 1.58 2023/03/01 08:13:54 riastradh Exp $ */
/* $NetBSD: kern_entropy.c,v 1.59 2023/03/03 12:52:49 riastradh Exp $ */
/*-
* Copyright (c) 2019 The NetBSD Foundation, Inc.
@ -75,7 +75,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_entropy.c,v 1.58 2023/03/01 08:13:54 riastradh Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_entropy.c,v 1.59 2023/03/03 12:52:49 riastradh Exp $");
#include <sys/param.h>
#include <sys/types.h>
@ -1634,6 +1634,8 @@ rnd_attach_source(struct krndsource *rs, const char *name, uint32_t type,
uint32_t extra[4];
unsigned i = 0;
KASSERTMSG(name[0] != '\0', "rndsource must have nonempty name");
/* Grab cycle counter to mix extra into the pool. */
extra[i++] = entropy_timer();
@ -2387,7 +2389,7 @@ entropy_ioctl(unsigned long cmd, void *data)
if (rndctl->type != 0xff) {
if (rs->type != rndctl->type)
continue;
} else {
} else if (rndctl->name[0] != '\0') {
if (strncmp(rs->name, rndctl->name, n) != 0)
continue;
}