avoid leaks on epoll/kqueue resources exhaustion wip-1.3

Simply releasing the descriptor triggering ENOSPC/ENOMEM errors from
epoll_ctl and kevent is not good enough, as those descriptors may
have other descriptors (e.g. files to be served) hanging off of them.

1 files changed, 10 insertions, 0 deletions

diff --git a/mgmt.c b/mgmt.c
index 9909d27..3468e24 100644
--- a/mgmt.c
+++ b/mgmt.c
@@ -82,6 +82,16 @@ MOG_NOINLINE static void mgmt_close(struct mog_fd *mfd)
         mog_fd_put(mfd);
 }
 
+/* called if epoll/kevent is out-of-space */
+void mog_mgmt_drop(struct mog_fd *mfd)
+{
+        struct mog_mgmt *mgmt = &mfd->as.mgmt;
+
+        if (mgmt->forward && mgmt->forward != MOG_IOSTAT)
+                mog_file_close(mgmt->forward);
+        mgmt_close(mfd);
+}
+
 void mog_mgmt_writev(struct mog_mgmt *mgmt, struct iovec *iov, int iovcnt)
 {
         struct mog_fd *mfd = mog_fd_of(mgmt);