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mounts: Make sure all namespaces has the same root source

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Currently we support nested mount namespaces, only if all of them have
the same path to the root.

crtools doesn't mount root, so it should be bind-mounted for all namespaces.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
This commit is contained in:
Andrey Vagin 2014-04-21 18:23:17 +04:00 • committed by Pavel Emelyanov
parent 1edfe53b71
commit 898335ba32
1 changed files with 6 additions and 0 deletions
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6
mount.c
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@ -233,6 +233,12 @@ static struct mount_info *mnt_build_ids_tree(struct mount_info *list)
m->mnt_id, m->parent_mnt_id, m->mountpoint,
root ? "found" : "not found");
if (root && m->is_ns_root) {
if (!mounts_equal(root, m, true) ||
strcmp(root->root, m->root)) {
pr_err("Nested mount namespaces with different roots are not supported yet");
return NULL;
}
/*
* A root of a sub mount namespace is
* mounted in a temporary directory in the