diff options
| author | Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> | 2019-09-30 01:00:59 +0200 |
|---|---|---|
| committer | Dr. Matthias St. Pierre <Matthias.St.Pierre@ncp-e.com> | 2019-10-19 00:04:27 +0200 |
| commit | 01036e2afbe116d608be048ed15930fc885ab2a8 (patch) | |
| tree | 592fff00d656eba95bc557ce2fc9f1f0d3114e6d /crypto | |
| parent | 2a7e6ed86be20bd472696a3eafe5d20ec9579dab (diff) | |
Move random-related defines from e_os.h to rand_unix.c
Fixes #10049
Reviewed-by: Richard Levitte <levitte@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/10050)
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/rand/rand_unix.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/crypto/rand/rand_unix.c b/crypto/rand/rand_unix.c index 0925446580..0142d84019 100644 --- a/crypto/rand/rand_unix.c +++ b/crypto/rand/rand_unix.c @@ -19,6 +19,56 @@ #include "crypto/rand.h" #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 |