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| author | Thomas Devoogdt <thomas@devoogdt.com> | 2023-04-10 19:58:15 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2023-04-11 13:56:12 +0200 |
| commit | cb57abb46f06f4ede8d9ccbdaac67377fdf416cf (patch) | |
| tree | 93d512ffcce80d1269dd8be538caeeb1fd5561cc | |
| parent | 200a9669fbf6f06894e4243cccc9fc11a1a6073a (diff) | |
| download | busybox-cb57abb46f06f4ede8d9ccbdaac67377fdf416cf.tar.gz | |
seedrng: fix for glibc <= 2.24 not providing random header
- dropped the wrong define (not sure why it was there)
- <sys/random.h> not available if glibc <= 2.24
- GRND_NONBLOCK not defined if <sys/random.h> not included
- ret < 0 && errno == ENOSYS has to be true to get creditable set
Signed-off-by: Thomas Devoogdt <thomas@devoogdt.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | miscutils/seedrng.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/miscutils/seedrng.c b/miscutils/seedrng.c index 7cc855141..3bf6e2ea7 100644 --- a/miscutils/seedrng.c +++ b/miscutils/seedrng.c @@ -42,25 +42,31 @@ #include "libbb.h" #include <linux/random.h> -#include <sys/random.h> #include <sys/file.h> /* Fix up glibc <= 2.24 not having getrandom() */ #if defined(__GLIBC__) && __GLIBC__ == 2 && __GLIBC_MINOR__ <= 24 #include <sys/syscall.h> -# define getrandom(...) bb_getrandom(__VA_ARGS__) static ssize_t getrandom(void *buffer, size_t length, unsigned flags) { # if defined(__NR_getrandom) return syscall(__NR_getrandom, buffer, length, flags); # else - return ENOSYS; + errno = ENOSYS; + return -1; # endif } +#else +#include <sys/random.h> +#endif + +/* Apparently some headers don't ship with this yet. */ +#ifndef GRND_NONBLOCK +#define GRND_NONBLOCK 0x0001 #endif #ifndef GRND_INSECURE -#define GRND_INSECURE 0x0004 /* Apparently some headers don't ship with this yet. */ +#define GRND_INSECURE 0x0004 #endif #define DEFAULT_SEED_DIR "/var/lib/seedrng" |