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fix return code check on syscall (issue #524)

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Daan 2022-01-16 12:10:33 -08:00
parent 7cde509b68
commit 9c583eb910
1 changed files with 1 additions and 1 deletions
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src/random.c
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@ -239,7 +239,7 @@ static bool os_random_buf(void* buf, size_t buf_len) {
if (mi_atomic_load_acquire(&no_getrandom)==0) { if (mi_atomic_load_acquire(&no_getrandom)==0) {
ssize_t ret = syscall(SYS_getrandom, buf, buf_len, GRND_NONBLOCK); ssize_t ret = syscall(SYS_getrandom, buf, buf_len, GRND_NONBLOCK);
if (ret >= 0) return (buf_len == (size_t)ret); if (ret >= 0) return (buf_len == (size_t)ret);
if (ret != ENOSYS) return false; if (errno != ENOSYS) return false;
mi_atomic_store_release(&no_getrandom, 1UL); // don't call again, and fall back to /dev/urandom mi_atomic_store_release(&no_getrandom, 1UL); // don't call again, and fall back to /dev/urandom
} }
#endif #endif