We should not leak the handle to the jimage file (lib/modules) to childs. JDK-8194734 did solve this for windows. We should use FD_CLOEXEC on Posix as well.
Note that this only poses a problem when a child process is spawned off not via `Runtime.exec` but via another route since the spawnhelper closes all file descriptors. --- test: manually verified that lib/modules now has the FD_CLOEXEC flag set. ------------- Commit messages: - open image file with O_CLOEXEC Changes: https://git.openjdk.java.net/jdk/pull/4991/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=4991&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8271858 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/4991.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/4991/head:pull/4991 PR: https://git.openjdk.java.net/jdk/pull/4991
