diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index 60964f0..fb1f663 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -202,6 +202,39 @@
     } while (_rc == -1 && errno == EINTR); \
     _rc; })
 
+#if defined(__BIONIC_FORTIFY)
+extern ssize_t __read_chk(int, void*, size_t, size_t);
+__errordecl(__read_dest_size_error, "read called with size bigger than destination");
+__errordecl(__read_count_toobig_error, "read called with count > SSIZE_MAX");
+extern ssize_t __read_real(int, void*, size_t)
+    __asm__(__USER_LABEL_PREFIX__ "read");
+
+__BIONIC_FORTIFY_INLINE
+ssize_t read(int fd, void* buf, size_t count) {
+    size_t bos = __bos0(buf);
+
+#if !defined(__clang__)
+    if (__builtin_constant_p(count) && (count > SSIZE_MAX)) {
+        __read_count_toobig_error();
+    }
+
+    if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
+        return __read_real(fd, buf, count);
+    }
+
+    if (__builtin_constant_p(count) && (count > bos)) {
+        __read_dest_size_error();
+    }
+
+    if (__builtin_constant_p(count) && (count <= bos)) {
+        return __read_real(fd, buf, count);
+    }
+#endif
+
+    return __read_chk(fd, buf, count, bos);
+}
+#endif /* defined(__BIONIC_FORTIFY) */
+
 __END_DECLS
 
 #endif /* _UNISTD_H_ */