criu/include/parasite.h
Pavel Emelyanov ed397e3a33 fds: Optimize fds draning (mem + cpu)
* Don't dumplicate array when sending to parasite
* Allocate necessary space in cr-dump for local fds/flags

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
2012-08-21 19:59:07 +04:00

107 lines
2 KiB
C

#ifndef CR_PARASITE_H_
#define CR_PARASITE_H_
#define PARASITE_STACK_SIZE 2048
#define PARASITE_ARG_SIZE 8196
#define PARASITE_MAX_SIZE (64 << 10)
#ifndef __ASSEMBLY__
#include <sys/un.h>
#include "image.h"
#include "util-net.h"
#include "../protobuf/vma.pb-c.h"
#define __head __used __section(.head.text)
enum {
PARASITE_CMD_INIT,
PARASITE_CMD_SET_LOGFD,
PARASITE_CMD_FINI,
PARASITE_CMD_DUMPPAGES_INIT,
PARASITE_CMD_DUMPPAGES,
PARASITE_CMD_DUMPPAGES_FINI,
PARASITE_CMD_DUMP_SIGACTS,
PARASITE_CMD_DUMP_ITIMERS,
PARASITE_CMD_DUMP_MISC,
PARASITE_CMD_DUMP_TID_ADDR,
PARASITE_CMD_DRAIN_FDS,
PARASITE_CMD_MAX,
};
struct parasite_init_args {
int h_addr_len;
struct sockaddr_un h_addr;
int p_addr_len;
struct sockaddr_un p_addr;
};
struct parasite_dump_pages_args {
VmaEntry vma_entry;
unsigned long nrpages_dumped; /* how many pages are dumped */
unsigned long nrpages_skipped;
unsigned long nrpages_total;
};
struct parasite_dump_sa_args {
rt_sigaction_t sas[SIGMAX];
};
struct parasite_dump_itimers_args {
struct itimerval real;
struct itimerval virt;
struct itimerval prof;
};
/*
* Misc sfuff, that is too small for separate file, but cannot
* be read w/o using parasite
*/
struct parasite_dump_misc {
unsigned int secbits;
unsigned long brk;
k_rtsigset_t blocked;
u32 pid;
u32 sid;
u32 pgid;
};
struct parasite_dump_tid_info {
unsigned int *tid_addr;
int tid;
};
#define PARASITE_MAX_FDS (PAGE_SIZE / sizeof(int))
struct parasite_drain_fd {
int nr_fds;
int fds[PARASITE_MAX_FDS];
};
static inline int drain_fds_size(struct parasite_drain_fd *dfds)
{
return sizeof(dfds->nr_fds) + dfds->nr_fds * sizeof(dfds->fds[0]);
}
/*
* Some useful offsets
*/
#define PARASITE_ARGS_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_args)
#define PARASITE_CMD_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_cmd)
#define PARASITE_HEAD_ADDR(start) \
((start) + parasite_blob_offset____export_parasite_head_start)
#endif /* !__ASSEMBLY__ */
#endif /* CR_PARASITE_H_ */