[CRIU] [PATCH 2/2] epoll: Handle epolls without targets

[Cyrill Gorcunov]

epoll might have no targets assigned so be
ready for that.

Reported-by: Andrew Vagin <avagin at parallels.com>
Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 eventpoll.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/eventpoll.c b/eventpoll.c
index dd9d23f..347ada6 100644
--- a/eventpoll.c
+++ b/eventpoll.c
@@ -79,6 +79,7 @@ static int dump_eventpoll_entry(union fdinfo_entries *e, void *arg)
 static int dump_one_eventpoll(int lfd, u32 id, const struct fd_parms *p)
 {
 	EventpollFileEntry e = EVENTPOLL_FILE_ENTRY__INIT;
+	int ret;
 
 	e.id = id;
 	e.flags = p->flags;
@@ -89,7 +90,13 @@ static int dump_one_eventpoll(int lfd, u32 id, const struct fd_parms *p)
 		     &e, PB_EVENTPOLL))
 		return -1;
 
-	return parse_fdinfo(lfd, FD_TYPES__EVENTPOLL, false, dump_eventpoll_entry, &id);
+	ret = parse_fdinfo(lfd, FD_TYPES__EVENTPOLL, true, dump_eventpoll_entry, &id);
+	if (ret == -2) {
+		/* epoll created but no traget assigned */
+		ret = 0;
+	}
+
+	return ret;
 }
 
 static const struct fdtype_ops eventpoll_ops = {
-- 
1.7.7.6