+#ifndef WIN32
+static int child_err = 2;
+
+static NORETURN void die_child(const char *err, va_list params)
+{
+ char msg[4096];
+ int len = vsnprintf(msg, sizeof(msg), err, params);
+ if (len > sizeof(msg))
+ len = sizeof(msg);
+
+ write(child_err, "fatal: ", 7);
+ write(child_err, msg, len);
+ write(child_err, "\n", 1);
+ exit(128);
+}
+
+static inline void set_cloexec(int fd)
+{
+ int flags = fcntl(fd, F_GETFD);
+ if (flags >= 0)
+ fcntl(fd, F_SETFD, flags | FD_CLOEXEC);
+}
+#endif
+