| random.c (6f98a4bfee72c22f50aedb39fb761567969865fe) | random.c (d0efdf35a6a71d307a250199af6fce122a7c7e11) |
|---|---|
| 1// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2/* 3 * Copyright (C) 2017-2022 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. 4 * Copyright Matt Mackall <mpm@selenic.com>, 2003, 2004, 2005 5 * Copyright Theodore Ts'o, 1994, 1995, 1996, 1997, 1998, 1999. All rights reserved. 6 * 7 * This driver produces cryptographically secure pseudorandom data. It is divided 8 * into roughly six sections, each with a section header: --- 1567 unchanged lines hidden (view full) --- 1576 * input pool. Always <= poolsize. 1577 * 1578 * - write_wakeup_threshold - the amount of entropy in the input pool 1579 * below which write polls to /dev/random will unblock, requesting 1580 * more entropy, tied to the POOL_MIN_BITS constant. It is writable 1581 * to avoid breaking old userspaces, but writing to it does not 1582 * change any behavior of the RNG. 1583 * | 1// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) 2/* 3 * Copyright (C) 2017-2022 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved. 4 * Copyright Matt Mackall <mpm@selenic.com>, 2003, 2004, 2005 5 * Copyright Theodore Ts'o, 1994, 1995, 1996, 1997, 1998, 1999. All rights reserved. 6 * 7 * This driver produces cryptographically secure pseudorandom data. It is divided 8 * into roughly six sections, each with a section header: --- 1567 unchanged lines hidden (view full) --- 1576 * input pool. Always <= poolsize. 1577 * 1578 * - write_wakeup_threshold - the amount of entropy in the input pool 1579 * below which write polls to /dev/random will unblock, requesting 1580 * more entropy, tied to the POOL_MIN_BITS constant. It is writable 1581 * to avoid breaking old userspaces, but writing to it does not 1582 * change any behavior of the RNG. 1583 * |
| 1584 * - urandom_min_reseed_secs - fixed to the meaningless value "60". | 1584 * - urandom_min_reseed_secs - fixed to the value CRNG_RESEED_INTERVAL. |
| 1585 * It is writable to avoid breaking old userspaces, but writing 1586 * to it does not change any behavior of the RNG. 1587 * 1588 ********************************************************************/ 1589 1590#ifdef CONFIG_SYSCTL 1591 1592#include <linux/sysctl.h> 1593 | 1585 * It is writable to avoid breaking old userspaces, but writing 1586 * to it does not change any behavior of the RNG. 1587 * 1588 ********************************************************************/ 1589 1590#ifdef CONFIG_SYSCTL 1591 1592#include <linux/sysctl.h> 1593 |
| 1594static int sysctl_random_min_urandom_seed = 60; | 1594static int sysctl_random_min_urandom_seed = CRNG_RESEED_INTERVAL / HZ; |
| 1595static int sysctl_random_write_wakeup_bits = POOL_MIN_BITS; 1596static int sysctl_poolsize = POOL_BITS; 1597static u8 sysctl_bootid[UUID_SIZE]; 1598 1599/* 1600 * This function is used to return both the bootid UUID, and random 1601 * UUID. The difference is in whether table->data is NULL; if it is, 1602 * then a new UUID is generated and returned to the user. --- 85 unchanged lines hidden --- | 1595static int sysctl_random_write_wakeup_bits = POOL_MIN_BITS; 1596static int sysctl_poolsize = POOL_BITS; 1597static u8 sysctl_bootid[UUID_SIZE]; 1598 1599/* 1600 * This function is used to return both the bootid UUID, and random 1601 * UUID. The difference is in whether table->data is NULL; if it is, 1602 * then a new UUID is generated and returned to the user. --- 85 unchanged lines hidden --- |