mirror of
https://github.com/checkpoint-restore/criu
synced 2025-08-22 18:07:57 +00:00
1fd9913ffb
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
96 lines
2.5 KiB
C
96 lines
2.5 KiB
C
#ifndef FILES_H_
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#define FILES_H_
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#include "compiler.h"
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#include "types.h"
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#include "lock.h"
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#include "list.h"
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#include "image.h"
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#include "../protobuf/fdinfo.pb-c.h"
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#include "../protobuf/fown.pb-c.h"
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#include "../protobuf/vma.pb-c.h"
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struct pstree_item;
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struct file_desc;
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struct cr_fdset;
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struct rst_info;
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struct fd_parms {
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int fd;
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unsigned long pos;
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unsigned int flags;
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char fd_flags;
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struct stat stat;
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pid_t pid;
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FownEntry fown;
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};
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#define FD_PARMS_INIT \
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{ \
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.fd = FD_DESC_INVALID, \
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.fown = FOWN_ENTRY__INIT, \
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}
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enum fdinfo_states {
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FD_STATE_PREP, /* Create unix sockets */
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FD_STATE_CREATE, /* Create and send fd */
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FD_STATE_POST_CREATE, /* Execute actions, when everyone was created */
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FD_STATE_RECV, /* Receive fd */
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FD_STATE_MAX
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};
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struct file_desc;
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struct fdinfo_list_entry {
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struct list_head desc_list; /* To chain on @fd_info_head */
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struct file_desc *desc; /* Associated file descriptor */
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struct list_head ps_list; /* To chain per-task files */
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int pid;
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futex_t real_pid;
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FdinfoEntry *fe;
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};
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struct file_desc_ops {
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unsigned int type;
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int (*open)(struct file_desc *d);
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int (*post_open)(struct file_desc *d, int fd);
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int (*want_transport)(FdinfoEntry *fe, struct file_desc *d);
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};
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struct file_desc {
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u32 id; /* File descriptor id, unique */
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struct list_head hash; /* Descriptor hashing and lookup */
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struct list_head fd_info_head; /* Chain of fdinfo_list_entry-s with same ID and type but different pids */
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struct file_desc_ops *ops; /* Associated operations */
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};
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struct fdtype_ops {
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unsigned int type;
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int (*dump)(int lfd, u32 id, const struct fd_parms *p);
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};
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extern int do_dump_gen_file(struct fd_parms *p, int lfd,
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const struct fdtype_ops *ops,
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const struct cr_fdset *cr_fdset);
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extern void file_desc_add(struct file_desc *d, u32 id, struct file_desc_ops *ops);
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extern struct fdinfo_list_entry *file_master(struct file_desc *d);
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extern struct file_desc *find_file_desc_raw(int type, u32 id);
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extern int send_fd_to_peer(int fd, struct fdinfo_list_entry *fle, int sock);
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extern int restore_fown(int fd, FownEntry *fown);
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extern int rst_file_params(int fd, FownEntry *fown, int flags);
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extern void show_saved_files(void);
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extern int prepare_fds(struct pstree_item *me);
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extern int prepare_fd_pid(int pid, struct rst_info *rst_info);
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extern int prepare_shared_fdinfo(void);
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extern int get_filemap_fd(int pid, VmaEntry *vma_entry);
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extern int prepare_fs(int pid);
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extern int set_fd_flags(int fd, int flags);
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#endif /* FILES_H_ */
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