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https://github.com/checkpoint-restore/criu
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70b67e3383
get_task_regs() needs to know if it needs to use workaround for a Skylake ptrace() bug. The next patch will introduce a new flag for that. I also thought about making 3 versions of get_task_regs() and adding them to ictx->get_task_regs() depending on the flags.. But get_task_regs() is a private function and infect_ctx is a uapi.. So, let's just pass context flags to get_task_regs(). Signed-off-by: Dmitry Safonov <dima@arista.com>
72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
#ifndef __COMPEL_INFECT_PRIV_H__
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#define __COMPEL_INFECT_PRIV_H__
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#include <stdbool.h>
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#define BUILTIN_SYSCALL_SIZE 8
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struct thread_ctx {
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k_rtsigset_t sigmask;
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user_regs_struct_t regs;
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};
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/* parasite control block */
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struct parasite_ctl {
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int rpid; /* Real pid of the victim */
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void *remote_map;
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void *local_map;
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void *sigreturn_addr; /* A place for the breakpoint */
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unsigned long map_length;
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struct infect_ctx ictx;
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/* thread leader data */
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bool daemonized;
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struct thread_ctx orig;
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void *rstack; /* thread leader stack*/
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struct rt_sigframe *sigframe;
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struct rt_sigframe *rsigframe; /* address in a parasite */
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void *r_thread_stack; /* stack for non-leader threads */
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unsigned long parasite_ip; /* service routine start ip */
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unsigned int *addr_cmd; /* addr for command */
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void *addr_args; /* address for arguments */
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unsigned long args_size;
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int tsock; /* transport socket for transferring fds */
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struct parasite_blob_desc pblob;
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};
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struct parasite_thread_ctl {
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int tid;
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struct parasite_ctl *ctl;
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struct thread_ctx th;
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};
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#define MEMFD_FNAME "CRIUMFD"
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#define MEMFD_FNAME_SZ sizeof(MEMFD_FNAME)
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struct ctl_msg;
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int parasite_wait_ack(int sockfd, unsigned int cmd, struct ctl_msg *m);
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extern void parasite_setup_regs(unsigned long new_ip, void *stack, user_regs_struct_t *regs);
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extern void *remote_mmap(struct parasite_ctl *ctl,
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void *addr, size_t length, int prot,
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int flags, int fd, off_t offset);
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extern bool arch_can_dump_task(struct parasite_ctl *ctl);
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extern int get_task_regs(pid_t pid, user_regs_struct_t *regs, save_regs_t save,
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void *arg, unsigned long flags);
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extern int arch_fetch_sas(struct parasite_ctl *ctl, struct rt_sigframe *s);
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extern int sigreturn_prep_regs_plain(struct rt_sigframe *sigframe,
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user_regs_struct_t *regs,
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user_fpregs_struct_t *fpregs);
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extern int sigreturn_prep_fpu_frame_plain(struct rt_sigframe *sigframe,
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struct rt_sigframe *rsigframe);
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extern int compel_execute_syscall(struct parasite_ctl *ctl,
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user_regs_struct_t *regs, const char *code_syscall);
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#endif
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