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https://github.com/checkpoint-restore/criu.git
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be79f38d6c
We have 3 calls for that, two called directly from cr-restore, one -- from one the former. Clean this mess and write short comments on each stage. Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
#ifndef PSTREE_H__
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#define PSTREE_H__
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#include "list.h"
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#include "crtools.h"
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/*
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* That's the init process which usually inherit
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* all orphaned children in the system.
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*/
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#define INIT_PID (1)
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struct pid {
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/*
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* The @real pid is used to fetch tasks during dumping stage,
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* This is a global pid seen from the context where the dumping
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* is running.
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*/
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pid_t real;
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/*
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* The @virt pid is one which used in the image itself and keeps
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* the pid value to be restored. This pid fetched from the
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* dumpee context, because the dumpee might have own pid namespace.
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*/
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pid_t virt;
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};
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struct pstree_item {
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struct pstree_item *parent;
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struct list_head children; /* list of my children */
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struct list_head sibling; /* linkage in my parent's children list */
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struct pid pid;
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pid_t pgid;
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pid_t sid;
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pid_t born_sid;
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int state; /* TASK_XXX constants */
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int nr_threads; /* number of threads */
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struct pid *threads; /* array of threads */
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struct rst_info rst[0];
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};
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extern void free_pstree(struct pstree_item *root_item);
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extern struct pstree_item *__alloc_pstree_item(bool rst);
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#define alloc_pstree_item() __alloc_pstree_item(false)
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#define alloc_pstree_item_with_rst() __alloc_pstree_item(true)
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extern struct pstree_item *root_item;
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extern struct pstree_item *pstree_item_next(struct pstree_item *item);
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#define for_each_pstree_item(pi) \
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for (pi = root_item; pi != NULL; pi = pstree_item_next(pi))
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extern bool restore_before_setsid(struct pstree_item *child);
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extern int prepare_pstree(void);
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extern int dump_pstree(struct pstree_item *root_item);
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struct task_entries;
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extern struct task_entries *task_entries;
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#endif
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