mirror of
https://github.com/checkpoint-restore/criu.git
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ec50a07727
Based on work done by Cyrill Corcunov (many thanks for that). In this commit we implement c/r for files which have opened /proc/$pid/ns/$ids entries. The idea is rather simple one Checkpoint ========== - Check if the file name is the one of known to be ns ref - If match then write protobuf entry Restore ======= - Read all ns entries from the image - When criu tries to open one we lookup over process tree to figure out which PID should be used in path and then just open it Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
41 lines
933 B
C
41 lines
933 B
C
#ifndef __CR_NS_H__
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#define __CR_NS_H__
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#include "crtools.h"
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#include "pstree.h"
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#include "files.h"
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struct cr_options;
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struct ns_desc {
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unsigned int cflag;
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char *str;
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size_t len;
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};
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#define NS_DESC_ENTRY(_cflag, _str) \
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{ \
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.cflag = _cflag, \
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.str = _str, \
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.len = sizeof(_str) - 1, \
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}
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extern bool check_ns_proc(struct fd_link *link);
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extern struct ns_desc pid_ns_desc;
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extern struct ns_desc user_ns_desc;
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extern unsigned long current_ns_mask;
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extern int dump_ns_file(struct fd_parms *p, int lfd, const int fdinfo);
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extern int collect_ns_files(void);
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int dump_namespaces(struct pid *pid, unsigned int ns_flags);
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int prepare_namespace(int pid, unsigned long clone_flags);
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int try_show_namespaces(int pid, struct cr_options *o);
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int switch_ns(int pid, struct ns_desc *nd, int *rst);
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int restore_ns(int rst, struct ns_desc *nd);
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int dump_task_ns_ids(struct pstree_item *);
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#endif /* __CR_NS_H__ */
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