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nspawn: slightly reorder mount logic

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Let's first setup the volatile logic, and only then mount secondary
partitions of the image in.
This commit is contained in:
Lennart Poettering 2018-12-19 01:02:47 +01:00
parent 6c610acaaa
commit 7d0ecdd62d
1 changed files with 22 additions and 22 deletions
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44
src/nspawn/nspawn.c
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@ -2896,6 +2896,28 @@ static int outer_child(
"Selected user namespace base " UID_FMT " and range " UID_FMT ".", arg_uid_shift, arg_uid_range);
}
/* Turn directory into bind mount */
r = mount_verbose(LOG_ERR, directory, directory, NULL, MS_BIND|MS_REC, NULL);
if (r < 0)
return r;
r = setup_pivot_root(
directory,
arg_pivot_root_new,
arg_pivot_root_old);
if (r < 0)
return r;
r = setup_volatile_mode(
directory,
arg_volatile_mode,
arg_userns_mode != USER_NAMESPACE_NO,
arg_uid_shift,
arg_uid_range,
arg_selinux_context);
if (r < 0)
return r;
if (dissected_image) {
/* Now we know the uid shift, let's now mount everything else that might be in the image. */
r = dissected_image_mount(dissected_image, directory, arg_uid_shift,
@ -2921,28 +2943,6 @@ static int outer_child(
unified_cgroup_hierarchy_socket = safe_close(unified_cgroup_hierarchy_socket);
}
/* Turn directory into bind mount */
r = mount_verbose(LOG_ERR, directory, directory, NULL, MS_BIND|MS_REC, NULL);
if (r < 0)
return r;
r = setup_pivot_root(
directory,
arg_pivot_root_new,
arg_pivot_root_old);
if (r < 0)
return r;
r = setup_volatile_mode(
directory,
arg_volatile_mode,
arg_userns_mode != USER_NAMESPACE_NO,
arg_uid_shift,
arg_uid_range,
arg_selinux_context);
if (r < 0)
return r;
/* Mark everything as shared so our mounts get propagated down. This is
* required to make new bind mounts available in systemd services
* inside the containter that create a new mount namespace.