1 files changed, 15 insertions, 0 deletions
diff --git a/src/shared/missing.h b/src/shared/missing.h
index 572e17117a..50f0d56c4a 100644
--- a/src/shared/missing.h
+++ b/src/shared/missing.h
@@ -42,6 +42,21 @@
 /* If RLIMIT_RTTIME is not defined, then we cannot use RLIMIT_NLIMITS as is */
 #define _RLIMIT_MAX (RLIMIT_RTTIME+1 > RLIMIT_NLIMITS ? RLIMIT_RTTIME+1 : RLIMIT_NLIMITS)
 
+#ifndef __NR_getrandom
+#  if defined __x86_64__
+#    define __NR_getrandom 278
+#  else
+#    warning "__NR_getrandom unknown for your architecture"
+#    define __NR_getrandom 0xffffffff
+#  endif
+#endif
+
+#if !HAVE_DECL_GETRANDOM
+static inline int getrandom(void *buffer, size_t count, unsigned flags) {
+        return syscall(__NR_getrandom, buffer, count, flags);
+}
+#endif
+
 #ifndef BTRFS_IOCTL_MAGIC
 #define BTRFS_IOCTL_MAGIC 0x94
 #endif