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| author | Denys Vlasenko <vda.linux@googlemail.com> | 2023-04-10 17:26:04 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2023-04-10 17:26:04 +0200 |
| commit | 200a9669fbf6f06894e4243cccc9fc11a1a6073a (patch) | |
| tree | 68d063899f02dbf640b70aa3191e05a613ab72d9 | |
| parent | 85e4805ae94ce653d8088d6575dc01114cd00bcf (diff) | |
| download | busybox-200a9669fbf6f06894e4243cccc9fc11a1a6073a.tar.gz | |
seedrng: fix for glibc <= 2.24 not providing getrandom()
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | miscutils/seedrng.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/miscutils/seedrng.c b/miscutils/seedrng.c index 967741dc7..7cc855141 100644 --- a/miscutils/seedrng.c +++ b/miscutils/seedrng.c @@ -45,6 +45,20 @@ #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; +# endif +} +#endif + #ifndef GRND_INSECURE #define GRND_INSECURE 0x0004 /* Apparently some headers don't ship with this yet. */ #endif |