terom@28: 
terom@31: #include "dbfs.h"
terom@29: #include "../lib/log.h"
terom@29: #include "../lib/misc.h"
terom@29: 
terom@28: /*
terom@28:  * Core fs functionality like lookup, getattr
terom@28:  */
terom@28: 
terom@28: void _dbfs_lookup_result (const struct evsql_result_info *res, void *arg) {
terom@28:     struct fuse_req *req = arg;
terom@28:     struct fuse_entry_param e; ZINIT(e);
terom@28:     int err = 0;
terom@28:     
terom@28:     uint32_t ino;
terom@28:     
terom@28:     // check the results
terom@28:     if ((err = _dbfs_check_res(res, 1, 5)))
terom@28:         SERROR(err = (err ==  1 ? ENOENT : EIO));
terom@28:     
terom@28:     // get the data
terom@28:     if (0
terom@28:         ||  evsql_result_uint32(res, 0, 0, &ino,        0 ) // inodes.ino
terom@28:     )
terom@28:         EERROR(err = EIO, "invalid db data");
terom@28:         
terom@28:     INFO("[dbfs.lookup] -> ino=%u", ino);
terom@28:     
terom@28:     // stat attrs
terom@31:     if ((err = _dbfs_stat_info(&e.attr, res, 0, 1)))
terom@28:         goto error;
terom@28: 
terom@28:     // other attrs
terom@28:     e.ino = e.attr.st_ino = ino;
terom@28:     e.attr_timeout = CACHE_TIMEOUT;
terom@28:     e.entry_timeout = CACHE_TIMEOUT;
terom@28:         
terom@28:     // reply
terom@28:     if ((err = fuse_reply_entry(req, &e)))
terom@28:         EERROR(err, "fuse_reply_entry");
terom@28: 
terom@28: error:
terom@28:     if (err && (err = fuse_reply_err(req, err)))
terom@28:         EWARNING(err, "fuse_reply_err");
terom@28: 
terom@28:     // free
terom@28:     evsql_result_free(res);
terom@28: }
terom@28: 
terom@28: void dbfs_lookup (struct fuse_req *req, fuse_ino_t parent, const char *name) {
terom@28:     struct dbfs *ctx = fuse_req_userdata(req);
terom@28:     int err;
terom@28: 
terom@28:     INFO("[dbfs.lookup] parent=%lu name=%s", parent, name);
terom@28:     
terom@28:     // query and params
terom@28:     const char *sql = 
terom@28:         "SELECT"
terom@31:         " inodes.ino, " DBFS_STAT_COLS
terom@33:         " FROM file_tree INNER JOIN inodes ON (file_tree.ino = inodes.ino)"
terom@33:         " WHERE file_tree.parent = $1::int4 AND file_tree.name = $2::varchar";
terom@28:     
terom@28:     static struct evsql_query_params params = EVSQL_PARAMS(EVSQL_FMT_BINARY) {
terom@28:         EVSQL_PARAM ( UINT32 ),
terom@28:         EVSQL_PARAM ( STRING ),
terom@28: 
terom@28:         EVSQL_PARAMS_END
terom@28:     };
terom@28:     
terom@28:     // build params
terom@28:     if (0
terom@28:         ||  evsql_param_uint32(&params, 0, parent)
terom@28:         ||  evsql_param_string(&params, 1, name)
terom@28:     )
terom@28:         EERROR(err = EIO, "evsql_param_*");
terom@28: 
terom@28:     // query
terom@28:     if (evsql_query_params(ctx->db, NULL, sql, &params, _dbfs_lookup_result, req) == NULL)
terom@28:         EERROR(err = EIO, "evsql_query_params");
terom@28: 
terom@28:     // XXX: handle interrupts
terom@28:     
terom@28:     // wait
terom@28:     return;
terom@28: 
terom@28: error:
terom@28:     if ((err = fuse_reply_err(req, err)))
terom@28:         EWARNING(err, "fuse_reply_err");
terom@28: }
terom@28: