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https://github.com/checkpoint-restore/criu.git
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a919dbc9c6
When cwd is removed (it can be) we need to collect the respective file_desc before starting opening any files to properly handle ghost refcounts. Otherwise we will miss one refcount from the cwd's on ghost, which in turn will either BUG inside ghost removal, or will fail the cwd due to the respective dir being removed too early. Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
59 lines
1 KiB
C
59 lines
1 KiB
C
#ifndef __CR_RST_INFO_H__
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#define __CR_RST_INFO_H__
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#include "lock.h"
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#include "list.h"
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#include "vma.h"
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struct task_entries {
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int nr_threads, nr_tasks, nr_helpers;
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futex_t nr_in_progress;
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futex_t start;
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mutex_t zombie_lock;
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};
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struct fdt {
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int nr; /* How many tasks share this fd table */
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pid_t pid; /* Who should restore this fd table */
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/*
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* The fd table is ready for restoing, if fdt_lock is equal to nr
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* The fdt table was restrored, if fdt_lock is equal to nr + 1
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*/
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futex_t fdt_lock;
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};
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struct _MmEntry;
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struct rst_info {
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struct list_head fds;
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struct list_head eventpoll;
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struct list_head tty_slaves;
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void *premmapped_addr;
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unsigned long premmapped_len;
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unsigned long clone_flags;
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void *munmap_restorer;
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int nr_zombies;
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int service_fd_id;
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struct fdt *fdt;
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struct vm_area_list vmas;
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struct _MmEntry *mm;
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u32 cg_set;
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union {
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struct pstree_item *pgrp_leader;
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futex_t pgrp_set;
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};
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struct file_desc *cwd;
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struct file_desc *root;
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bool has_umask;
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u32 umask;
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};
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#endif /* __CR_RST_INFO_H__ */
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