/*
* pool_set_part_copy -- make a copy of the poolset part
*/
int
pool_set_part_copy(struct pool_set_part *dpart, struct pool_set_part *spart,
int overwrite)
{
LOG(3, "dpart %p spart %p", dpart, spart);
int result = 0;
util_stat_t stat_buf;
if (util_stat(spart->path, &stat_buf)) {
ERR("!util_stat");
return -1;
}
size_t smapped = 0;
void *saddr = pmem_map_file(spart->path, 0, 0, S_IREAD, &smapped, NULL);
if (!saddr)
return -1;
size_t dmapped = 0;
int is_pmem;
void *daddr;
if (!access(dpart->path, F_OK)) {
if (!overwrite) {
errno = EEXIST;
result = -1;
goto out_sunmap;
}
daddr = pmem_map_file(dpart->path, 0, 0, S_IWRITE, &dmapped,
&is_pmem);
} else {
if (errno == ENOENT) {
errno = 0;
daddr = pmem_map_file(dpart->path, dpart->filesize,
PMEM_FILE_CREATE | PMEM_FILE_EXCL,
stat_buf.st_mode, &dmapped, &is_pmem);
} else {
result = -1;
goto out_sunmap;
}
}
if (!daddr) {
result = -1;
goto out_sunmap;
}
if (is_pmem) {
pmem_memcpy_persist(daddr, saddr, smapped);
} else {
memcpy(daddr, saddr, smapped);
PERSIST_GENERIC(dpart->is_dax, daddr, smapped);
}
pmem_unmap(daddr, dmapped);
out_sunmap:
pmem_unmap(saddr, smapped);
return result;
}
/*
* pmemlog_descr_create -- (internal) create log memory pool descriptor
*/
static int
pmemlog_descr_create(PMEMlogpool *plp, size_t poolsize)
{
LOG(3, "plp %p poolsize %zu", plp, poolsize);
ASSERTeq(poolsize % Pagesize, 0);
/* create required metadata */
plp->start_offset = htole64(roundup(sizeof(*plp),
LOG_FORMAT_DATA_ALIGN));
plp->end_offset = htole64(poolsize);
plp->write_offset = plp->start_offset;
/* store non-volatile part of pool's descriptor */
PERSIST_GENERIC(plp->is_pmem, &plp->start_offset, 3 * sizeof(uint64_t));
return 0;
}
