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https://github.com/checkpoint-restore/criu.git
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b7de83aaf3
Timers are dumped from inside parasite code, the format is plain -- just 3 pairs of interval/value one-by-one. The restoration occurs in two stages -- first prepare the timer values in restorer (and check for sanity), then setup the timers in the latest stage before actually calling the sigreturn. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#ifndef CR_PARASITE_H_
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#define CR_PARASITE_H_
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#include <sys/types.h>
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#include <limits.h>
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#include "compiler.h"
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#include "syscall.h"
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#include "image.h"
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#define __parasite_head __used __section(.parasite.head.text)
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#define PARASITE_STACK_SIZE 2048
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#define PARASITE_ARG_SIZE 8196
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#define PARASITE_BRK_SIZE 32768
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#define PARASITE_MAX_SIZE (64 << 10)
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/* we need own error code for diagnostics */
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#define PARASITE_ERR_FAIL -1024
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#define PARASITE_ERR_OPEN -1025
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#define PARASITE_ERR_MMAP -1026
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#define PARASITE_ERR_MINCORE -1027
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#define PARASITE_ERR_MUNMAP -1028
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#define PARASITE_ERR_CLOSE -1029
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#define PARASITE_ERR_WRITE -1030
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#define PARASITE_ERR_MPROTECT -1031
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#define PARASITE_ERR_SIGACTION -1032
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#define PARASITE_ERR_GETITIMER -1033
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enum {
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PARASITE_CMD_NONE,
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PARASITE_CMD_KILLME,
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PARASITE_CMD_PINGME,
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PARASITE_CMD_DUMPPAGES,
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PARASITE_CMD_DUMP_SIGACTS,
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PARASITE_CMD_DUMP_ITIMERS,
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PARASITE_CMD_MAX,
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};
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typedef struct {
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unsigned long command;
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unsigned long args_size;
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void *args;
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} parasite_args_t;
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typedef struct {
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long ret; /* custom ret code */
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long sys_ret; /* syscall ret code */
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long line; /* where we're failed */
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} parasite_status_t;
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#define SET_PARASITE_STATUS(st, ret_code, sys_ret_code) \
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do { \
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(st)->ret = ret_code, \
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(st)->sys_ret = sys_ret_code, \
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(st)->line = __LINE__; \
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} while (0)
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struct parasite_dump_file_args {
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parasite_status_t status;
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unsigned long open_mode;
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unsigned long open_flags;
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char open_path[PATH_MAX];
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};
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struct parasite_dump_pages_args {
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struct parasite_dump_file_args fa;
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struct vma_entry vma_entry;
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unsigned long nrpages_dumped; /* how many pages are dumped */
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unsigned long fd;
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};
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/*
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* Some useful offsets
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*/
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#define PARASITE_ARGS_ADDR(start) \
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((start) + parasite_blob_offset__parasite_args)
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#define PARASITE_CMD_ADDR(start) \
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((start) + parasite_blob_offset__parasite_cmd)
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#define PARASITE_HEAD_ADDR(start) \
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((start) + parasite_blob_offset__parasite_head_start)
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#define PARASITE_COMPLETE_ADDR(start) \
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((start) + parasite_blob_offset__parasite_service_complete)
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#endif /* CR_PARASITE_H_ */
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