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https://github.com/checkpoint-restore/criu
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6bbdec26f3
Here is nothing interecting. If a file can't be dumped by criu,
plugins are called. If one of plugins knows how to dump the file,
the file entry is marked as need_callback. On restore if we see
this mark, we execute plugins for restoring the file.
v2: Callbacks are called for all files, which are not supported by CRIU.
v3: Call plugins for a file instead of file descriptor. A few file
descriptors can be associated with one file.
v4: A file descriptor is opened in a callback. It's required for
restoring anon vmas.
v5: Add a separate type for unsupported files
v6: define FD_TYPES__UNSUPP
v7: s/unsupp/ext (external)
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
39 lines
1.2 KiB
C
39 lines
1.2 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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/* Public API */
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extern int criu_get_image_dir(void);
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#endif
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