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cr-restore: restore root sid before mount namespace

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This is a precursor patch for AutoFS mount restore.
To restore AutoFS indirect mount points, we have to create mount point dentries.
This can do only the process with pgrp, configured to mount. Process, which
does AutoFS mount call (init) at that moment is not.
Restoring actual pgrp before sid breaks sid restoring.
Thus, restoring of sid is required to make process group leader.

Signed-off-by: Stanislav Kinsburskiy <skinsbursky@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Stanislav Kinsburskiy 2016-01-27 15:04:12 +03:00 committed by Pavel Emelyanov
parent 5ff22ad29b
commit cae94b76f1
1 changed files with 5 additions and 1 deletions
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6
cr-restore.c
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@ -1482,7 +1482,8 @@ static int create_children_and_session(void)
return ret; return ret;
} }
restore_sid(); if (current->parent)
restore_sid();
pr_info("Restoring children in our session:\n"); pr_info("Restoring children in our session:\n");
list_for_each_entry(child, &current->children, sibling) { list_for_each_entry(child, &current->children, sibling) {
@ -1565,6 +1566,9 @@ static int restore_task_with_children(void *_arg)
if (restore_finish_stage(CR_STATE_RESTORE_NS) < 0) if (restore_finish_stage(CR_STATE_RESTORE_NS) < 0)
goto err; goto err;
pr_info("Calling restore_sid() for init\n");
restore_sid();
/* /*
* We need non /proc proc mount for restoring pid and mount * We need non /proc proc mount for restoring pid and mount
* namespaces and do not care for the rest of the cases. * namespaces and do not care for the rest of the cases.