#include <errno.h>
#include <fcntl.h>
-#include "native_client/src/public/name_service.h"
#include "native_client/src/untrusted/nacl/nacl_random.h"
#include "native_client/src/untrusted/irt/irt.h"
#include "native_client/src/untrusted/irt/irt_private.h"
#include "native_client/src/untrusted/nacl/syscall_bindings_trampoline.h"
-static int secure_random_fd = -1;
-
-static int prepare_secure_random(void) {
- if (secure_random_fd == -1) {
- int fd;
- int status = irt_nameservice_lookup("SecureRandom", O_RDONLY, &fd);
- if (status != NACL_NAME_SERVICE_SUCCESS) {
- return EIO;
- }
- if (!__sync_bool_compare_and_swap(&secure_random_fd, -1, fd)) {
- /*
- * We raced with another thread. It already installed an fd.
- */
- NACL_SYSCALL(close)(fd);
- }
- }
- return 0;
-}
-
int nacl_secure_random_init(void) {
return 0;
}
int nacl_secure_random(void *buf, size_t count, size_t *nread) {
- int error = prepare_secure_random();
- if (error == 0) {
- int rv = NACL_GC_WRAP_SYSCALL(NACL_SYSCALL(read)(secure_random_fd,
- buf, count));
- if (rv < 0)
- error = -rv;
- else
- *nread = rv;
- }
- return error;
+ int rv = NACL_GC_WRAP_SYSCALL(NACL_SYSCALL(get_random_bytes)(buf, count));
+ if (rv != 0)
+ return -rv;
+ *nread = count;
+ return 0;
}
const struct nacl_irt_random nacl_irt_random = {