static int champ_chooser_new_client(struct async *as, struct conf **confs)
{
int fd=-1;
socklen_t t;
struct asfd *newfd=NULL;
struct sockaddr_un remote;
struct blist *blist=NULL;
t=sizeof(remote);
if((fd=accept(as->asfd->fd, (struct sockaddr *)&remote, &t))<0)
{
logp("accept error in %s: %s\n", __func__, strerror(errno));
goto error;
}
if(!(blist=blist_alloc())
|| !(newfd=setup_asfd(as, "(unknown)", &fd, /*listen*/"")))
goto error;
newfd->blist=blist;
newfd->set_timeout(newfd, get_int(confs[OPT_NETWORK_TIMEOUT]));
logp("Connected to fd %d\n", newfd->fd);
return 0;
error:
close_fd(&fd);
blist_free(&blist);
return -1;
}
int backup_phase2_server(struct async *as, struct sdirs *sdirs,
const char *manifest_dir, int resume, struct conf *conf)
{
int ret=-1;
int sigs_end=0;
int backup_end=0;
int requests_end=0;
int blk_requests_end=0;
struct slist *slist=NULL;
struct blist *blist=NULL;
struct iobuf *wbuf=NULL;
struct dpth *dpth=NULL;
struct manio *cmanio=NULL; // current manifest
struct manio *p1manio=NULL; // phase1 scan manifest
struct manio *chmanio=NULL; // changed manifest
struct manio *unmanio=NULL; // unchanged manifest
// This is used to tell the client that a number of consecutive blocks
// have been found and can be freed.
uint64_t wrap_up=0;
// Main fd is first in the list.
struct asfd *asfd=as->asfd;
// Champ chooser fd is second in the list.
struct asfd *chfd=asfd->next;
logp("Phase 2 begin (recv backup data)\n");
//if(champ_chooser_init(sdirs->data, conf)
if(!(cmanio=manio_alloc())
|| !(p1manio=manio_alloc())
|| !(chmanio=manio_alloc())
|| !(unmanio=manio_alloc())
|| manio_init_read(cmanio, sdirs->cmanifest)
|| manio_init_read(p1manio, sdirs->phase1data)
|| manio_init_write(chmanio, sdirs->changed)
|| manio_init_write(unmanio, sdirs->unchanged)
|| !(slist=slist_alloc())
|| !(blist=blist_alloc())
|| !(wbuf=iobuf_alloc())
|| !(dpth=dpth_alloc(sdirs->data))
|| dpth_init(dpth))
goto end;
// The phase1 manifest looks the same as a burp1 one.
manio_set_protocol(p1manio, PROTO_BURP1);
while(!backup_end)
{
if(maybe_add_from_scan(asfd,
p1manio, cmanio, unmanio, slist, conf))
goto end;
if(!wbuf->len)
{
if(get_wbuf_from_sigs(wbuf, slist, blist,
sigs_end, &blk_requests_end, dpth, conf))
goto end;
if(!wbuf->len)
{
get_wbuf_from_files(wbuf, slist,
p1manio, &requests_end);
}
}
if(wbuf->len)
asfd->append_all_to_write_buffer(asfd, wbuf);
append_for_champ_chooser(chfd, blist, sigs_end);
if(as->read_write(as))
{
logp("error in %s\n", __func__);
goto end;
}
while(asfd->rbuf->buf)
{
if(deal_with_read(asfd->rbuf, slist, blist,
conf, &sigs_end, &backup_end, dpth))
goto end;
// Get as much out of the
// readbuf as possible.
if(asfd->parse_readbuf(asfd)) goto end;
}
while(chfd->rbuf->buf)
{
if(deal_with_read_from_chfd(asfd, chfd,
blist, &wrap_up, dpth)) goto end;
// Get as much out of the
// readbuf as possible.
if(chfd->parse_readbuf(chfd)) goto end;
}
if(write_to_changed_file(asfd, chfd, chmanio,
slist, blist, dpth, backup_end, conf))
goto end;
}
// Hack: If there are some entries left after the last entry that
// contains block data, it will not be written to the changed file
// yet because the last entry of block data has not had
// sb->burp2->bend set.
if(slist->head && slist->head->next)
{
slist->head=slist->head->next;
if(write_to_changed_file(asfd, chfd, chmanio,
slist, blist, dpth, backup_end, conf))
goto end;
}
if(manio_close(unmanio)
|| manio_close(chmanio))
goto end;
if(blist->head)
{
logp("ERROR: finishing but still want block: %lu\n",
blist->head->index);
goto end;
}
// Need to release the last left. There should be one at most.
if(dpth->head && dpth->head->next)
{
logp("ERROR: More data locks remaining after: %s\n",
dpth->head->save_path);
goto end;
}
if(dpth_release_all(dpth)) goto end;
ret=0;
end:
logp("End backup\n");
slist_free(slist);
blist_free(blist);
iobuf_free_content(asfd->rbuf);
iobuf_free_content(chfd->rbuf);
// Write buffer did not allocate 'buf'.
if(wbuf) wbuf->buf=NULL;
iobuf_free(wbuf);
dpth_release_all(dpth);
dpth_free(&dpth);
manio_free(&cmanio);
manio_free(&p1manio);
manio_free(&chmanio);
manio_free(&unmanio);
return ret;
}
int backup_phase2_client_burp2(struct asfd *asfd, struct conf *conf, int resume)
{
int ret=-1;
int sigs_end=0;
int backup_end=0;
int requests_end=0;
int blk_requests_end=0;
struct win *win=NULL; // Rabin sliding window.
struct slist *slist=NULL;
struct blist *blist=NULL;
struct iobuf *rbuf=NULL;
struct iobuf *wbuf=NULL;
logp("Phase 2 begin (send backup data)\n");
if(!(slist=slist_alloc())
|| !(blist=blist_alloc())
|| !(wbuf=iobuf_alloc())
|| blks_generate_init(conf)
|| !(win=win_alloc(&conf->rconf)))
goto end;
rbuf=asfd->rbuf;
if(!resume)
{
// Only do this bit if the server did not tell us to resume.
if(asfd->write_str(asfd, CMD_GEN, "backupphase2")
|| asfd->read_expect(asfd, CMD_GEN, "ok"))
goto end;
}
else if(conf->send_client_cntr)
{
// On resume, the server might update the client with the
// counters.
if(cntr_recv(asfd, conf))
goto end;
}
while(!backup_end)
{
if(!wbuf->len)
{
get_wbuf_from_data(conf, wbuf, slist, blist,
blk_requests_end);
if(!wbuf->len)
{
get_wbuf_from_blks(wbuf, slist,
requests_end, &sigs_end);
}
}
if(wbuf->len)
asfd->append_all_to_write_buffer(asfd, wbuf);
if(asfd->as->read_write(asfd->as))
{
logp("error in %s\n", __func__);
goto end;
}
if(rbuf->buf && deal_with_read(rbuf, slist, blist,
conf, &backup_end, &requests_end, &blk_requests_end))
goto end;
if(slist->head
// Need to limit how many blocks are allocated at once.
&& (!blist->head
|| blist->tail->index - blist->head->index<BLKS_MAX_IN_MEM)
)
{
if(add_to_blks_list(asfd, conf, slist, blist, win))
goto end;
}
if(blk_requests_end)
{
// If got to the end of the file request list
// and the last block of the last file, and
// the write buffer is empty, we got to the end.
if(slist->head==slist->tail)
{
if(!slist->tail
|| blist->last_sent==slist->tail->burp2->bend)
{
if(!wbuf->len)
break;
}
}
}
}
if(asfd->write_str(asfd, CMD_GEN, "backup_end"))
goto end;
ret=0;
end:
blk_print_alloc_stats();
//sbuf_print_alloc_stats();
win_free(win);
slist_free(&slist);
blist_free(&blist);
// Write buffer did not allocate 'buf'.
wbuf->buf=NULL;
iobuf_free(&wbuf);
cntr_print_end(conf->cntr);
cntr_print(conf->cntr, ACTION_BACKUP);
if(ret) logp("Error in backup\n");
logp("End backup\n");
return ret;
}
