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Move random-related defines to "crypto/rand.h"

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This fixes commit 01036e2afbe116d608be048ed15930fc885ab2a8, which moved the
DEVRANDOM and DEVRANDOM_EGD defines into rand_unix.c. That change introduced
the regression that the compiler complains about missing declarations in
crypto/info.c when OpenSSL is configured using `--with-rand-seed=devrandom`
(resp. `--with-rand-seed=egd`)

Fixes #10759

Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org>
(Merged from https://github.com/openssl/openssl/pull/10762)
This commit is contained in:
Dr. Matthias St. Pierre 2020-01-06 01:50:43 +01:00
parent d368d9d2e4
commit 2e912f63a4
3 changed files with 50 additions and 49 deletions
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1
crypto/info.c
View File

@ -8,6 +8,7 @@
*/
#include <openssl/crypto.h>
#include "crypto/rand.h"
#include "crypto/dso_conf.h"
#include "internal/thread_once.h"
#include "internal/cryptlib.h"

49
crypto/rand/rand_unix.c
View File

@ -20,55 +20,6 @@
#include <stdio.h>
#include "internal/dso.h"
/*
* Defines related to seed sources
*/
#ifndef DEVRANDOM
/*
* set this to a comma-separated list of 'random' device files to try out. By
* default, we will try to read at least one of these files
*/
# define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
# if defined(__linux) && !defined(__ANDROID__)
# ifndef DEVRANDOM_WAIT
# define DEVRANDOM_WAIT "/dev/random"
# endif
/*
* Linux kernels 4.8 and later changes how their random device works and there
* is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
* should be used instead.
*/
# ifndef DEVRANDOM_SAFE_KERNEL
# define DEVRANDOM_SAFE_KERNEL 4, 8
# endif
/*
* Some operating systems do not permit select(2) on their random devices,
* defining this to zero will force the use of read(2) to extract one byte
* from /dev/random.
*/
# ifndef DEVRANDM_WAIT_USE_SELECT
# define DEVRANDM_WAIT_USE_SELECT 1
# endif
/*
* Define the shared memory identifier used to indicate if the operating
* system has properly seeded the DEVRANDOM source.
*/
# ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
# define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
# endif
# endif
#endif
#if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
/*
* set this to a comma-separated list of 'egd' sockets to try out. These
* sockets will be tried in the order listed in case accessing the device
* files listed in DEVRANDOM did not return enough randomness.
*/
# define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
#endif
#ifdef __linux
# include <sys/syscall.h>
# ifdef DEVRANDOM_WAIT

49
include/crypto/rand.h
View File

@ -23,6 +23,55 @@
/* forward declaration */
typedef struct rand_pool_st RAND_POOL;
/*
* Defines related to seed sources
*/
#ifndef DEVRANDOM
/*
* set this to a comma-separated list of 'random' device files to try out. By
* default, we will try to read at least one of these files
*/
# define DEVRANDOM "/dev/urandom", "/dev/random", "/dev/hwrng", "/dev/srandom"
# if defined(__linux) && !defined(__ANDROID__)
# ifndef DEVRANDOM_WAIT
# define DEVRANDOM_WAIT "/dev/random"
# endif
/*
* Linux kernels 4.8 and later changes how their random device works and there
* is no reliable way to tell that /dev/urandom has been seeded -- getentropy(2)
* should be used instead.
*/
# ifndef DEVRANDOM_SAFE_KERNEL
# define DEVRANDOM_SAFE_KERNEL 4, 8
# endif
/*
* Some operating systems do not permit select(2) on their random devices,
* defining this to zero will force the use of read(2) to extract one byte
* from /dev/random.
*/
# ifndef DEVRANDM_WAIT_USE_SELECT
# define DEVRANDM_WAIT_USE_SELECT 1
# endif
/*
* Define the shared memory identifier used to indicate if the operating
* system has properly seeded the DEVRANDOM source.
*/
# ifndef OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID
# define OPENSSL_RAND_SEED_DEVRANDOM_SHM_ID 114
# endif
# endif
#endif
#if !defined(OPENSSL_NO_EGD) && !defined(DEVRANDOM_EGD)
/*
* set this to a comma-separated list of 'egd' sockets to try out. These
* sockets will be tried in the order listed in case accessing the device
* files listed in DEVRANDOM did not return enough randomness.
*/
# define DEVRANDOM_EGD "/var/run/egd-pool", "/dev/egd-pool", "/etc/egd-pool", "/etc/entropy"
#endif
void rand_cleanup_int(void);
/* Hardware-based seeding functions. */