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files: Close old service fd in clone_service_fd()

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Next patches will make service_fd_base not contant.
It will be "floating" and change from task to task.
This patch makes preparation for that: it closes
old service fd after it's duplicated.

Currently the code is unused as in case of
!(rsti(me)->clone_flags & CLONE_FILES), the child
has the same id as its parent, and the duplication
just does not occur.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
This commit is contained in:
Kirill Tkhai
2018-01-10 17:02:35 +03:00
committed by Andrei Vagin
parent d300d172a7
commit 4fc7cdecf5
1 changed files with 2 additions and 0 deletions
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criu/util.c
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@@ -563,6 +563,8 @@ int clone_service_fd(struct pstree_item *me)
continue; continue;
pr_perror("Unable to clone %d->%d", old, new); pr_perror("Unable to clone %d->%d", old, new);
} }
if (ret >= 0 && !(rsti(me)->clone_flags & CLONE_FILES))
close(old);
} }
service_fd_id = id; service_fd_id = id;