/**
* Retrieve entry attributes from its primary key
*/
int listmgr_get_by_pk( lmgr_t * p_mgr, PK_ARG_T pk, attr_set_t * p_info )
{
int rc;
char *first_table = NULL;
GString *req, *from;
/* attribute count is up to 1 per bit (8 per byte).
* x2 for bullet proofing */
char *result_tab[2*8*sizeof(p_info->attr_mask)];
result_handle_t result;
bool checkmain = true;
int main_count = 0,
annex_count = 0,
name_count = 0;
attr_mask_t gen = gen_fields(p_info->attr_mask);
if (p_info == NULL)
return 0;
/* init entry info */
memset(&p_info->attr_values, 0, sizeof(entry_info_t));
req = g_string_new("SELECT ");
from = g_string_new(" FROM ");
/* retrieve source info for generated fields (only about std fields)*/
add_source_fields_for_gen(&p_info->attr_mask.std);
/* don't get fields that are not in main, names, annex, stripe...
* This allows the caller to set all bits 'on' to get everything.
* Note: this also clear generated fields. They will be restored after.
*/
supported_bits_only(&p_info->attr_mask);
/* get info from main table (if asked) */
main_count = attrmask2fieldlist(req, p_info->attr_mask, T_MAIN, "", "", 0);
if (main_count < 0)
{
rc = -main_count;
goto free_str;
}
else if (main_count > 0)
{
checkmain = false;
first_table = MAIN_TABLE;
g_string_append(from, MAIN_TABLE);
}
annex_count = attrmask2fieldlist(req, p_info->attr_mask, T_ANNEX, "", "",
first_table != NULL ? AOF_LEADING_SEP : 0);
if (annex_count < 0)
{
rc = -annex_count;
goto free_str;
}
else if (annex_count > 0)
{
if (first_table != NULL)
g_string_append_printf(from, " LEFT JOIN "ANNEX_TABLE" ON %s.id="
ANNEX_TABLE".id", first_table);
else
{
first_table = ANNEX_TABLE;
g_string_append(from, ANNEX_TABLE);
}
}
name_count = attrmask2fieldlist(req, p_info->attr_mask, T_DNAMES, "", "",
first_table != NULL ? AOF_LEADING_SEP : 0);
if (name_count < 0)
{
rc = -name_count;
goto free_str;
}
else if (name_count > 0)
{
if (first_table)
/* it's OK to JOIN with NAMES table here even if there are multiple paths,
* as we only take one result record. The important thing is to return
* consistent values for parent_id, name and fullpath. */
g_string_append_printf(from, " LEFT JOIN "DNAMES_TABLE" ON %s.id="
DNAMES_TABLE".id", first_table);
else
{
first_table = DNAMES_TABLE;
g_string_append(from, DNAMES_TABLE);
}
}
if (first_table != NULL)
{
int shift = 0;
g_string_append_printf(req, "%s WHERE %s.id="DPK, from->str,
first_table, pk);
rc = db_exec_sql(&p_mgr->conn, req->str, &result);
if (rc)
goto free_str;
rc = db_next_record(&p_mgr->conn, &result, result_tab,
main_count + annex_count + name_count);
/* END_OF_LIST means it does not exist */
if (rc == DB_END_OF_LIST)
{
clean_std_table_bits(&p_info->attr_mask);
/* not found, but did not check MAIN yet */
if (checkmain)
goto next_table;
rc = DB_NOT_EXISTS;
}
if (rc)
goto free_res;
/* set info from result */
if (main_count)
{
rc = result2attrset(T_MAIN, result_tab + shift, main_count, p_info);
shift += main_count;
if (rc)
goto free_res;
}
if (annex_count)
{
rc = result2attrset(T_ANNEX, result_tab + shift, annex_count,
p_info);
shift += annex_count;
if (rc)
goto free_res;
}
if (name_count)
{
rc = result2attrset(T_DNAMES, result_tab + shift, name_count,
p_info);
shift += name_count;
if (rc)
goto free_res;
}
next_table:
db_result_free(&p_mgr->conn, &result);
}
/* remove stripe info if it is not a file */
if (stripe_fields(p_info->attr_mask) && ATTR_MASK_TEST(p_info, type)
&& strcmp(ATTR(p_info, type), STR_TYPE_FILE) != 0)
{
p_info->attr_mask = attr_mask_and_not(&p_info->attr_mask, &stripe_attr_set);
}
/* get stripe info if asked */
#ifdef _LUSTRE
if (stripe_fields(p_info->attr_mask))
{
rc = get_stripe_info(p_mgr, pk, &ATTR(p_info, stripe_info),
ATTR_MASK_TEST(p_info, stripe_items)?
&ATTR(p_info, stripe_items) : NULL);
if (rc == DB_ATTR_MISSING || rc == DB_NOT_EXISTS)
{
/* stripe info is in std mask */
p_info->attr_mask.std &= ~ATTR_MASK_stripe_info;
if (ATTR_MASK_TEST(p_info, stripe_items))
p_info->attr_mask.std &= ~ATTR_MASK_stripe_items;
}
else if (rc)
goto free_str;
else
checkmain = false; /* entry exists */
}
#else
/* POSIX: always clean stripe bits */
p_info->attr_mask = attr_mask_and_not(&p_info->attr_mask, &stripe_attr_set);
#endif
/* special field dircount */
if (dirattr_fields(p_info->attr_mask))
{
if (listmgr_get_dirattrs(p_mgr, pk, p_info))
{
DisplayLog(LVL_MAJOR, LISTMGR_TAG, "listmgr_get_dirattrs failed for "DPK, pk);
p_info->attr_mask = attr_mask_and_not(&p_info->attr_mask, &dir_attr_set);
}
}
if (checkmain)
{
/* verify it exists in main table */
g_string_printf(req, "SELECT id FROM " MAIN_TABLE " WHERE id="DPK, pk);
/* execute the request */
rc = db_exec_sql(&p_mgr->conn, req->str, &result);
if (rc)
goto free_str;
rc = db_next_record(&p_mgr->conn, &result, result_tab, 1);
db_result_free(&p_mgr->conn, &result);
if (rc)
{
rc = DB_NOT_EXISTS;
goto free_str;
}
}
/* restore generated fields in attr mask */
p_info->attr_mask = attr_mask_or(&p_info->attr_mask, &gen);
/* generate them */
generate_fields(p_info);
/* update operation stats */
p_mgr->nbop[OPIDX_GET]++;
rc = DB_SUCCESS;
goto free_str;
free_res:
db_result_free(&p_mgr->conn, &result);
free_str:
g_string_free(req, TRUE);
g_string_free(from, TRUE);
return rc;
} /* listmgr_get_by_pk */
/**
* check if the entry exists in the database and what info
* must be retrieved.
*/
int EntryProc_get_info_db( struct entry_proc_op_t *p_op, lmgr_t * lmgr )
{
int rc = 0;
int next_stage = -1; /* -1 = skip */
attr_mask_t attr_allow_cached = null_mask;
attr_mask_t attr_need_fresh = null_mask;
uint32_t status_scope = 0; /* status mask only */
attr_mask_t tmp;
const pipeline_stage_t *stage_info =
&entry_proc_pipeline[p_op->pipeline_stage];
/* check if entry is in policies scope */
add_matching_scopes_mask(&p_op->entry_id, &p_op->fs_attrs, true,
&status_scope);
/* XXX also retrieve needed attributes to check the scope? */
/* get diff attributes from DB and FS (to allow comparison) */
p_op->db_attr_need = attr_mask_or(&p_op->db_attr_need, &diff_mask);
tmp = attr_mask_and_not(&diff_mask, &p_op->fs_attrs.attr_mask);
p_op->fs_attr_need = attr_mask_or(&p_op->fs_attr_need, &tmp);
if (entry_proc_conf.detect_fake_mtime)
attr_mask_set_index(&p_op->db_attr_need, ATTR_INDEX_creation_time);
attr_allow_cached = attrs_for_status_mask(status_scope, false);
attr_need_fresh = attrs_for_status_mask(status_scope, true);
/* XXX check if entry is in policy scope? */
/* what must be retrieved from DB: */
tmp = attr_mask_and_not(&attr_allow_cached, &p_op->fs_attrs.attr_mask);
p_op->db_attr_need = attr_mask_or(&p_op->db_attr_need, &tmp);
/* no dircount for non-dirs */
if (ATTR_MASK_TEST(&p_op->fs_attrs, type) &&
!strcmp(ATTR(&p_op->fs_attrs, type), STR_TYPE_DIR))
{
attr_mask_unset_index(&p_op->db_attr_need, ATTR_INDEX_dircount);
}
/* no readlink for non symlinks */
if (ATTR_MASK_TEST(&p_op->fs_attrs, type)) /* likely */
{
if (!strcmp(ATTR(&p_op->fs_attrs, type), STR_TYPE_LINK))
{
attr_mask_set_index(&p_op->db_attr_need, ATTR_INDEX_link); /* check if it is known */
/* no stripe for symlinks */
attr_mask_unset_index(&p_op->db_attr_need, ATTR_INDEX_stripe_info);
attr_mask_unset_index(&p_op->db_attr_need, ATTR_INDEX_stripe_items);
}
else
attr_mask_unset_index(&p_op->db_attr_need, ATTR_INDEX_link);
}
if (!attr_mask_is_null(p_op->db_attr_need))
{
p_op->db_attrs.attr_mask = p_op->db_attr_need;
rc = ListMgr_Get(lmgr, &p_op->entry_id, &p_op->db_attrs);
if (rc == DB_SUCCESS)
{
p_op->db_exists = 1;
}
else if (rc == DB_NOT_EXISTS )
{
p_op->db_exists = 0;
ATTR_MASK_INIT( &p_op->db_attrs );
}
else
{
/* ERROR */
DisplayLog(LVL_CRIT, ENTRYPROC_TAG,
"Error %d retrieving entry "DFID" from DB: %s.", rc,
PFID(&p_op->entry_id), lmgr_err2str(rc));
p_op->db_exists = 0;
ATTR_MASK_INIT( &p_op->db_attrs );
}
}
else
{
p_op->db_exists = ListMgr_Exists( lmgr, &p_op->entry_id );
}
/* get status for all policies with a matching scope */
add_matching_scopes_mask(&p_op->entry_id, &p_op->fs_attrs, true,
&p_op->fs_attr_need.status);
tmp = attr_mask_and_not(&attr_need_fresh, &p_op->fs_attrs.attr_mask);
p_op->fs_attr_need = attr_mask_or(&p_op->fs_attr_need, &tmp);
if ( !p_op->db_exists )
{
/* new entry */
p_op->db_op_type = OP_TYPE_INSERT;
/* set creation time if it was not set by scan module */
if (!ATTR_MASK_TEST(&p_op->fs_attrs, creation_time))
{
ATTR_MASK_SET( &p_op->fs_attrs, creation_time );
ATTR( &p_op->fs_attrs, creation_time ) = time(NULL); /* XXX min(atime,mtime,ctime)? */
}
#ifdef _LUSTRE
if (ATTR_MASK_TEST(&p_op->fs_attrs, type)
&& !strcmp(ATTR( &p_op->fs_attrs, type ), STR_TYPE_FILE )
/* only if it was not retrieved during the scan */
&& !(ATTR_MASK_TEST(&p_op->fs_attrs, stripe_info)
&& ATTR_MASK_TEST(&p_op->fs_attrs, stripe_items)))
{
attr_mask_set_index(&p_op->fs_attr_need, ATTR_INDEX_stripe_info);
attr_mask_set_index(&p_op->fs_attr_need, ATTR_INDEX_stripe_items);
}
#endif
/* readlink for symlinks (if not already known) */
if (ATTR_MASK_TEST(&p_op->fs_attrs, type)
&& !strcmp(ATTR( &p_op->fs_attrs, type ), STR_TYPE_LINK)
&& !ATTR_MASK_TEST(&p_op->fs_attrs, link))
{
attr_mask_set_index(&p_op->fs_attr_need, ATTR_INDEX_link);
}
else
{
attr_mask_unset_index(&p_op->fs_attr_need, ATTR_INDEX_link);
}
#ifdef ATTR_INDEX_status /** @FIXME RBHv3 drop old-style status reference */
if (ATTR_MASK_TEST(&p_op->fs_attrs, type)
#ifdef _LUSTRE_HSM
&& !strcmp( ATTR(&p_op->fs_attrs, type), STR_TYPE_FILE ))
#elif defined (_HSM_LITE)
&& (strcmp( ATTR(&p_op->fs_attrs, type), STR_TYPE_DIR ) != 0)
&& !p_op->extra_info.not_supp)
#endif
{
p_op->fs_attr_need |= ATTR_MASK_status;
#ifdef _HSM_LITE
p_op->fs_attr_need |= (attr_need_fresh & ~p_op->fs_attrs.attr_mask);
#endif
}
else
{