static void get_wbuf_from_files(struct iobuf *wbuf, struct slist *slist, struct manio *p1manio, int *requests_end)
{
static uint64_t file_no=1;
struct sbuf *sb=slist->last_requested;
if(!sb)
{
if(manio_closed(p1manio) && !*requests_end)
{
iobuf_from_str(wbuf, CMD_GEN, (char *)"requests_end");
*requests_end=1;
}
return;
}
if(sb->flags & SBUF_SENT_PATH || !(sb->flags & SBUF_NEED_DATA))
{
slist->last_requested=sb->next;
return;
}
// Only need to request the path at this stage.
iobuf_copy(wbuf, &sb->path);
sb->flags |= SBUF_SENT_PATH;
sb->burp2->index=file_no++;
}
int manio_close(struct manio *manio)
{
if(manio_closed(manio)) return 0;
if(sort_and_write_hooks(manio)
|| sort_and_write_dindex(manio))
{
fzp_close(&(manio->fzp));
return -1;
}
return fzp_close(&(manio->fzp));
}
static int maybe_add_from_scan(struct asfd *asfd,
struct manio *p1manio, struct manio *cmanio,
struct manio *unmanio, struct slist *slist, struct conf *conf)
{
int ret=-1;
static int ars;
static int ec=0;
struct sbuf *snew=NULL;
while(1)
{
if(manio_closed(p1manio)) return 0;
// Limit the amount loaded into memory at any one time.
if(slist && slist->head)
{
if(slist->head->burp2->index
- slist->tail->burp2->index>4096)
return 0;
}
if(!(snew=sbuf_alloc(conf))) goto end;
if((ars=manio_sbuf_fill(p1manio,
asfd, snew, NULL, NULL, conf))<0) goto end;
else if(ars>0) return 0; // Finished.
if(!(ec=entry_changed(asfd, snew, cmanio, unmanio, conf)))
{
// No change, no need to add to slist.
continue;
}
else if(ec<0) goto end; // Error.
if(data_needed(snew)) snew->flags|=SBUF_NEED_DATA;
slist_add_sbuf(slist, snew);
}
return 0;
end:
sbuf_free(&snew);
return ret;
}
int backup_phase2_server_protocol1(struct async *as, struct sdirs *sdirs,
const char *incexc, int resume, struct conf **cconfs)
{
int ret=0;
struct manio *p1manio=NULL;
struct dpth *dpth=NULL;
char *deltmppath=NULL;
char *last_requested=NULL;
// Where to write changed data.
// Data is not getting written to a compressed file.
// This is important for recovery if the power goes.
struct fzp *chfp=NULL;
struct fzp *ucfp=NULL; // unchanged data
struct fzp *cmanfp=NULL; // previous (current) manifest.
struct sbuf *cb=NULL; // file list in current manifest
struct sbuf *p1b=NULL; // file list from client
struct sbuf *rb=NULL; // receiving file from client
struct asfd *asfd=as->asfd;
int breaking=0;
int breakcount=0;
if(get_int(cconfs[OPT_BREAKPOINT])>=2000
&& get_int(cconfs[OPT_BREAKPOINT])<3000)
{
breaking=get_int(cconfs[OPT_BREAKPOINT]);
breakcount=breaking-2000;
}
logp("Begin phase2 (receive file data)\n");
if(!(dpth=dpth_alloc())
|| dpth_protocol1_init(dpth, sdirs->currentdata,
get_int(cconfs[OPT_MAX_STORAGE_SUBDIRS])))
goto error;
if(open_previous_manifest(&cmanfp, sdirs, incexc, cconfs))
goto error;
if(get_int(cconfs[OPT_DIRECTORY_TREE]))
{
// Need to make sure we do not try to create a path that is
// too long.
if(build_path_w(sdirs->treepath)) goto error;
treepathlen=strlen(sdirs->treepath);
init_fs_max(sdirs->treepath);
}
if(!(p1manio=manio_alloc())
|| manio_init_read(p1manio, sdirs->phase1data)
|| !(cb=sbuf_alloc(cconfs))
|| !(p1b=sbuf_alloc(cconfs))
|| !(rb=sbuf_alloc(cconfs)))
goto error;
manio_set_protocol(p1manio, PROTO_1);
if(resume && do_resume(p1manio, sdirs, dpth, cconfs))
goto error;
// Unchanged and changed should now be truncated correctly, we just
// have to open them for appending.
if(!(ucfp=fzp_open(sdirs->unchanged, "a+b"))
|| !(chfp=fzp_open(sdirs->changed, "a+b")))
goto error;
if(manio_closed(p1manio)
&& manio_open_next_fpath(p1manio))
goto error;
while(1)
{
if(breaking)
{
if(breakcount--==0) return breakpoint(cconfs, __func__);
}
//printf("in loop, %s %s %c\n",
// cmanfp?"got cmanfp":"no cmanfp",
// rb->path.buf?:"no rb->path",
// rb->path.buf?'X':rb->path.cmd);
if(write_status(CNTR_STATUS_BACKUP,
rb->path.buf?rb->path.buf:p1b->path.buf, cconfs))
goto error;
if(last_requested
|| manio_closed(p1manio)
|| asfd->writebuflen)
{
switch(do_stuff_to_receive(asfd, sdirs,
cconfs, rb, chfp, dpth, &last_requested))
{
case 0: break;
case 1: goto end; // Finished ok.
case -1: goto error;
}
}
switch(do_stuff_to_send(asfd, p1b, &last_requested))
{
case 0: break;
case 1: continue;
case -1: goto error;
}
if(manio_closed(p1manio)) continue;
sbuf_free_content(p1b);
switch(manio_sbuf_fill_phase1(p1manio, asfd,
p1b, NULL, sdirs, cconfs))
{
case 0: break;
case 1: manio_close(p1manio);
if(asfd->write_str(asfd,
CMD_GEN, "backupphase2end")) goto error;
break;
case -1: goto error;
}
if(!cmanfp)
{
// No old manifest, need to ask for a new file.
if(process_new(sdirs, cconfs, p1b, ucfp))
goto error;
continue;
}
// Have an old manifest, look for it there.
// Might already have it, or be ahead in the old
// manifest.
if(cb->path.buf) switch(maybe_process_file(asfd,
sdirs, cb, p1b, ucfp, cconfs))
{
case 0: break;
case 1: continue;
case -1: goto error;
}
while(cmanfp)
{
sbuf_free_content(cb);
switch(sbufl_fill(cb, asfd, cmanfp, cconfs))
{
case 0: break;
case 1: fzp_close(&cmanfp);
if(process_new(sdirs, cconfs, p1b,
ucfp)) goto error;
continue;
case -1: goto error;
}
switch(maybe_process_file(asfd, sdirs,
cb, p1b, ucfp, cconfs))
{
case 0: continue;
case 1: break;
case -1: goto error;
}
break;
}
}
error:
ret=-1;
end:
if(fzp_close(&chfp))
{
logp("error closing %s in %s\n", sdirs->changed, __func__);
ret=-1;
}
if(fzp_close(&ucfp))
{
logp("error closing %s in %s\n", sdirs->unchanged, __func__);
ret=-1;
}
free_w(&deltmppath);
sbuf_free(&cb);
sbuf_free(&p1b);
sbuf_free(&rb);
manio_free(&p1manio);
fzp_close(&cmanfp);
dpth_free(&dpth);
if(!ret) unlink(sdirs->phase1data);
logp("End phase2 (receive file data)\n");
return ret;
}
