/*
* timecmp
*
* This callback function is used during backup. It checks
* if the object specified by the 'attr' should be backed
* up or not.
*
* Directories are backed up anyways for dump format.
* If this function is called, then the directory is
* marked in the bitmap vector, it shows that either the
* directory itself is modified or there is something below
* it that will be backed up.
*
* Directories for tar format are backed up if and only if
* they are modified.
*
* By setting ndmp_force_bk_dirs global variable to a non-zero
* value, directories are backed up anyways.
*
* Backing up the directories unconditionally, helps
* restoring the metadata of directories as well, when one
* of the objects below them are being restored.
*
* For non-directory objects, if the modification or change
* time of the object is after the date specified by the
* bk_selector_t, the the object must be backed up.
*
*/
static boolean_t
timecmp(bk_selector_t *bksp,
struct stat64 *attr)
{
ndmp_lbr_params_t *nlp;
nlp = (ndmp_lbr_params_t *)bksp->bs_cookie;
if (S_ISDIR(attr->st_mode) && ndmp_force_bk_dirs) {
NDMP_LOG(LOG_DEBUG, "d(%lu)",
(uint_t)attr->st_ino);
return (TRUE);
}
if (S_ISDIR(attr->st_mode) &&
dbm_getone(nlp->nlp_bkmap, (u_longlong_t)attr->st_ino) &&
((NLP_ISDUMP(nlp) && ndmp_dump_path_node) ||
(NLP_ISTAR(nlp) && ndmp_tar_path_node))) {
/*
* If the object is a directory and it leads to a modified
* object (that should be backed up) and for that type of
* backup the path nodes should be backed up, then return
* TRUE.
*
* This is required by some DMAs like Backup Express, which
* needs to receive ADD_NODE (for dump) or ADD_PATH (for tar)
* for the intermediate directories of a modified object.
* Other DMAs, like net_backup and net_worker, do not have such
* requirement. This requirement makes sense for dump format
* but for 'tar' format, it does not. In provision to the
* NDMP-v4 spec, for 'tar' format the intermediate directories
* need not to be reported.
*/
NDMP_LOG(LOG_DEBUG, "p(%lu)", (u_longlong_t)attr->st_ino);
return (TRUE);
}
if (attr->st_mtime > bksp->bs_ldate) {
NDMP_LOG(LOG_DEBUG, "m(%lu): %lu > %lu",
(uint_t)attr->st_ino, (uint_t)attr->st_mtime,
(uint_t)bksp->bs_ldate);
return (TRUE);
}
if (attr->st_ctime > bksp->bs_ldate) {
if (NLP_IGNCTIME(nlp)) {
NDMP_LOG(LOG_DEBUG, "ign c(%lu): %lu > %lu",
(uint_t)attr->st_ino, (uint_t)attr->st_ctime,
(uint_t)bksp->bs_ldate);
return (FALSE);
}
NDMP_LOG(LOG_DEBUG, "c(%lu): %lu > %lu",
(uint_t)attr->st_ino, (uint_t)attr->st_ctime,
(uint_t)bksp->bs_ldate);
return (TRUE);
}
NDMP_LOG(LOG_DEBUG, "mc(%lu): (%lu,%lu) < %lu",
(uint_t)attr->st_ino, (uint_t)attr->st_mtime,
(uint_t)attr->st_ctime, (uint_t)bksp->bs_ldate);
return (FALSE);
}
/*
* ndmpd_mark_inodes_v2
*
* Mark the inodes of the backup hierarchy if necessary.
*
* Parameters:
* session (input) - pointer to the session
* nlp (input) - pointer to the nlp structure
*
* Returns:
* 0: on success.
* != 0: on error.
*/
int
ndmpd_mark_inodes_v2(ndmpd_session_t *session, ndmp_lbr_params_t *nlp)
{
int rv;
if (ndmp_skip_traverse) {
syslog(LOG_INFO, "Skip processing directories \"%s\"",
nlp->nlp_backup_path);
rv = create_allset_bitmap(nlp);
} else {
if (NLP_ISTAR(nlp))
rv = mark_tar_inodes_v2(session, nlp);
else if (NLP_ISDUMP(nlp))
rv = mark_dump_inodes_v2(session, nlp);
else {
syslog(LOG_ERR, "Unknown backup type for \"%s\"",
nlp->nlp_backup_path);
rv = -1;
}
}
return (rv);
}
