Andrea Maria Piana e65760ca85 Add basic peersyncing
This commit adds basic syncing capabilities with peers if they are both
online.

It updates the work done on MVDS, but I decided to create the code in
status-go instead, since it's very tight to the application (similarly
the code that was the inspiration for mvds, bramble, is all tight
together at the database level).

I reused parts of the protobufs.

The flow is:

1) An OFFER message is sent periodically with a bunch of message-ids and
   group-ids.
2) Anyone can REQUEST some of those messages if not present in their
   database.

3) The peer will then send over those messages.

It's disabled by default, but I am planning to add a way to set up the
flags.
2024-01-23 12:46:17 +00:00

84 lines
2.8 KiB
C

#ifndef _SPAWN_H
#define _SPAWN_H
#ifdef __cplusplus
extern "C" {
#endif
#include <features.h>
#define __NEED_mode_t
#define __NEED_pid_t
#define __NEED_sigset_t
#include <bits/alltypes.h>
struct sched_param;
#define POSIX_SPAWN_RESETIDS 1
#define POSIX_SPAWN_SETPGROUP 2
#define POSIX_SPAWN_SETSIGDEF 4
#define POSIX_SPAWN_SETSIGMASK 8
#define POSIX_SPAWN_SETSCHEDPARAM 16
#define POSIX_SPAWN_SETSCHEDULER 32
#define POSIX_SPAWN_USEVFORK 64
#define POSIX_SPAWN_SETSID 128
typedef struct {
int __flags;
pid_t __pgrp;
sigset_t __def, __mask;
int __prio, __pol;
void *__fn;
char __pad[64-sizeof(void *)];
} posix_spawnattr_t;
typedef struct {
int __pad0[2];
void *__actions;
int __pad[16];
} posix_spawn_file_actions_t;
int posix_spawn(pid_t *__restrict, const char *__restrict, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *__restrict, char *const *__restrict, char *const *__restrict);
int posix_spawnp(pid_t *__restrict, const char *__restrict, const posix_spawn_file_actions_t *,
const posix_spawnattr_t *__restrict, char *const *__restrict, char *const *__restrict);
int posix_spawnattr_init(posix_spawnattr_t *);
int posix_spawnattr_destroy(posix_spawnattr_t *);
int posix_spawnattr_setflags(posix_spawnattr_t *, short);
int posix_spawnattr_getflags(const posix_spawnattr_t *__restrict, short *__restrict);
int posix_spawnattr_setpgroup(posix_spawnattr_t *, pid_t);
int posix_spawnattr_getpgroup(const posix_spawnattr_t *__restrict, pid_t *__restrict);
int posix_spawnattr_setsigmask(posix_spawnattr_t *__restrict, const sigset_t *__restrict);
int posix_spawnattr_getsigmask(const posix_spawnattr_t *__restrict, sigset_t *__restrict);
int posix_spawnattr_setsigdefault(posix_spawnattr_t *__restrict, const sigset_t *__restrict);
int posix_spawnattr_getsigdefault(const posix_spawnattr_t *__restrict, sigset_t *__restrict);
int posix_spawnattr_setschedparam(posix_spawnattr_t *__restrict, const struct sched_param *__restrict);
int posix_spawnattr_getschedparam(const posix_spawnattr_t *__restrict, struct sched_param *__restrict);
int posix_spawnattr_setschedpolicy(posix_spawnattr_t *, int);
int posix_spawnattr_getschedpolicy(const posix_spawnattr_t *__restrict, int *__restrict);
int posix_spawn_file_actions_init(posix_spawn_file_actions_t *);
int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *);
int posix_spawn_file_actions_addopen(posix_spawn_file_actions_t *__restrict, int, const char *__restrict, int, mode_t);
int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int);
int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int, int);
#if defined(_BSD_SOURCE) || defined(_GNU_SOURCE)
int posix_spawn_file_actions_addchdir_np(posix_spawn_file_actions_t *__restrict, const char *__restrict);
int posix_spawn_file_actions_addfchdir_np(posix_spawn_file_actions_t *, int);
#endif
#ifdef __cplusplus
}
#endif
#endif