only use MAP_SHARED_VALIDATE where defined #1941

3 years ago · cd49a63b7b
parent fadc500568
commit cd49a63b7b
1 changed files with 4 additions and 0 deletions
--- a/src/lib/png.c
+++ b/src/lib/png.c
@ -263,7 +263,11 @@ void* create_png_mmap(const ncvisual* ncv, size_t* bsize, int fd){
  }
  // FIXME hugetlb?
  void* map = mmap(NULL, mlen, PROT_WRITE | PROT_READ,
+#ifdef MAP_SHARED_VALIDATE
                   MAP_SHARED_VALIDATE |
+#else
+                   MAP_SHARED |
+#endif
                   (fd >= 0 ? 0 : MAP_ANONYMOUS), fd, 0);
  if(map == MAP_FAILED){
    logerror("Couldn't get %zuB map for %d\n", mlen, fd);