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https://github.com/checkpoint-restore/criu.git
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d9c3b91cf1
This is required for (soon to be) pre-dump command -- this command will have to keep parasite args with pagemap (iovecs) some time after parasite is executed. Since we call mprotect cmd _after_ pages dump we can thus spoil these iovecs. To address this vmas to mprotect and iovecs to dump are located in one parasite args area one after another without intersections. Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
151 lines
2.7 KiB
C
151 lines
2.7 KiB
C
#ifndef __CR_PARASITE_H__
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#define __CR_PARASITE_H__
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#define PARASITE_STACK_SIZE (16 << 10)
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#define PARASITE_ARG_SIZE_MIN ( 1 << 12)
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#define PARASITE_MAX_SIZE (64 << 10)
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#ifndef __ASSEMBLY__
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#include <sys/un.h>
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#include "image.h"
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#include "util-net.h"
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#include "protobuf/vma.pb-c.h"
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#define __head __used __section(.head.text)
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enum {
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PARASITE_CMD_INIT,
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PARASITE_CMD_INIT_THREAD,
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PARASITE_CMD_CFG_LOG,
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PARASITE_CMD_FINI,
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PARASITE_CMD_FINI_THREAD,
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PARASITE_CMD_MPROTECT_VMAS,
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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_DUMP_MISC,
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PARASITE_CMD_DUMP_CREDS,
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PARASITE_CMD_DUMP_THREAD,
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PARASITE_CMD_DRAIN_FDS,
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PARASITE_CMD_GET_PROC_FD,
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PARASITE_CMD_DUMP_TTY,
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PARASITE_CMD_MAX,
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};
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struct parasite_init_args {
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int h_addr_len;
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struct sockaddr_un h_addr;
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int p_addr_len;
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struct sockaddr_un p_addr;
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int nr_threads;
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};
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struct parasite_log_args {
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int log_level;
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};
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struct parasite_vma_entry
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{
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unsigned long start;
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unsigned long len;
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int prot;
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};
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struct parasite_dump_pages_args {
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unsigned int nr_vmas;
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unsigned int add_prot;
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unsigned int off;
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unsigned int nr_segs;
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unsigned int nr_pages;
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};
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static inline struct parasite_vma_entry *pargs_vmas(struct parasite_dump_pages_args *a)
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{
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return (struct parasite_vma_entry *)(a + 1);
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}
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static inline struct iovec *pargs_iovs(struct parasite_dump_pages_args *a)
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{
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return (struct iovec *)(pargs_vmas(a) + a->nr_vmas);
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}
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struct parasite_dump_sa_args {
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rt_sigaction_t sas[SIGMAX];
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};
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struct parasite_dump_itimers_args {
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struct itimerval real;
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struct itimerval virt;
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struct itimerval prof;
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};
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/*
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* Misc sfuff, that is too small for separate file, but cannot
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* be read w/o using parasite
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*/
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struct parasite_dump_misc {
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unsigned long brk;
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k_rtsigset_t blocked;
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u32 pid;
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u32 sid;
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u32 pgid;
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u32 tls;
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u32 umask;
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};
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#define PARASITE_MAX_GROUPS (PAGE_SIZE / sizeof(unsigned int) - 2 * sizeof(unsigned))
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struct parasite_dump_creds {
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unsigned int secbits;
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unsigned int ngroups;
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unsigned int groups[PARASITE_MAX_GROUPS];
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};
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struct parasite_dump_thread {
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unsigned int *tid_addr;
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pid_t tid;
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k_rtsigset_t blocked;
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u32 tls;
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};
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#define PARASITE_MAX_FDS (PAGE_SIZE / sizeof(int))
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struct parasite_drain_fd {
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int nr_fds;
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int fds[PARASITE_MAX_FDS];
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};
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static inline int drain_fds_size(struct parasite_drain_fd *dfds)
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{
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return sizeof(dfds->nr_fds) + dfds->nr_fds * sizeof(dfds->fds[0]);
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}
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struct parasite_tty_args {
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int fd;
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int sid;
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int pgrp;
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bool hangup;
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int st_pckt;
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int st_lock;
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int st_excl;
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};
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/* the parasite prefix is added by gen_offsets.sh */
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#define parasite_sym(pblob, name) ((void *)(pblob) + parasite_blob_offset__##name)
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#endif /* !__ASSEMBLY__ */
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#endif /* __CR_PARASITE_H__ */
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