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https://github.com/checkpoint-restore/criu.git
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c18b30d0a9
All the entries with with_plugin set will be mounted by plugin. The interesting case is when we do the pivot-root restore. In this case we call restore callback very early (before we unmount the old tree) and ask it to create the mountpoint at temporary location. Later we move the mount to proper place. The old_root argument of the callback is where it can find files in the original mount namespace. The is_file is return-argument. Sine files and directories cannot be bind-mounted to each-other, the callback should create the mountpoint itself and report whether it created file or directory. Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
41 lines
1.4 KiB
C
41 lines
1.4 KiB
C
/*
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This file defines types and macros for CRIU plugins.
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Copyright (C) 2013 Parallels, Inc
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __CRIU_PLUGIN_H__
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#define __CRIU_PLUGIN_H__
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#include <limits.h>
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#include <stdbool.h>
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typedef int (cr_plugin_init_t)(void);
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typedef void (cr_plugin_fini_t)(void);
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typedef int (cr_plugin_dump_unix_sk_t)(int fd, int id);
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typedef int (cr_plugin_restore_unix_sk_t)(int id);
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typedef int (cr_plugin_dump_file_t)(int fd, int id);
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typedef int (cr_plugin_restore_file_t)(int id);
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typedef int (cr_plugin_dump_ext_mount_t)(char *mountpoint, int id);
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typedef int (cr_plugin_restore_ext_mount_t)(int id, char *mountpoint, char *old_root, int *is_file);
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/* Public API */
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extern int criu_get_image_dir(void);
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#endif
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