workaround for F_DUPFD_CLOEXEC on Linux kernel <2.6.24 before it existed

JuliaLang · Dec 11, 2018 · 0e18677 · 0e18677
1 parent 560e829
commit 0e18677
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/init.c b/src/init.c
@@ -345,8 +345,15 @@ int uv_dup(uv_os_fd_t fd, uv_os_fd_t* dupfd) {
 }
 #else
 int uv_dup(uv_os_fd_t fd, uv_os_fd_t* dupfd) {
+// F_DUPFD_CLOEXEC only available since Linux 2.6.24
+#ifdef F_DUPFD_CLOEXEC
     if ((*dupfd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) == -1)
         return -errno;
+#else
+    if ((*dupfd = fcntl(fd, F_DUPFD, 3)) == -1)
+        return -errno;
+    fcntl(fd, F_SETFD, FD_CLOEXEC);
+#endif
     return 0;
 }
 #endif