Preliminary support to intercept getrandom() #275

test/getrandom_test.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+#include <sys/random.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv) {
+  char *buf = calloc(100, 1);
+  size_t buflen = 100;
+  unsigned flags = GRND_NONBLOCK;
+
+  fprintf(stdout, "Before getrandom:\n");
+  for (int i=0; i < buflen; i++) { fprintf(stdout, "%hhu ", buf[i]); }
+  fprintf(stdout, "\n");
+
+  int result = getrandom(buf, buflen, flags);
+  fprintf(stdout, "getrandom() result: %d\n", result);
+  if (result == -1) perror("getrandom() unsuccessful");
+
+
+  fprintf(stdout, "After getrandom:\n");
+  for (int i=0; i < buflen; i++) { fprintf(stdout, "%hhu ", buf[i]); }
+  fprintf(stdout, "\n");
+
+  free(buf);
+  return 0;
+}