--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/dbfs/core.c	Wed Oct 15 01:14:22 2008 +0300
@@ -0,0 +1,161 @@
+
+#include "common.h"
+#include "ops.h"
+
+/*
+ * Core fs functionality like lookup, getattr
+ */
+
+void _dbfs_lookup_result (const struct evsql_result_info *res, void *arg) {
+    struct fuse_req *req = arg;
+    struct fuse_entry_param e; ZINIT(e);
+    int err = 0;
+    
+    uint32_t ino;
+    
+    // check the results
+    if ((err = _dbfs_check_res(res, 1, 5)))
+        SERROR(err = (err ==  1 ? ENOENT : EIO));
+    
+    // get the data
+    if (0
+        ||  evsql_result_uint32(res, 0, 0, &ino,        0 ) // inodes.ino
+    )
+        EERROR(err = EIO, "invalid db data");
+        
+    INFO("[dbfs.lookup] -> ino=%u", ino);
+    
+    // stat attrs
+    if (_dbfs_stat_info(&e.attr, res, 0, 1))
+        goto error;
+
+    // other attrs
+    e.ino = e.attr.st_ino = ino;
+    e.attr_timeout = CACHE_TIMEOUT;
+    e.entry_timeout = CACHE_TIMEOUT;
+        
+    // reply
+    if ((err = fuse_reply_entry(req, &e)))
+        EERROR(err, "fuse_reply_entry");
+
+error:
+    if (err && (err = fuse_reply_err(req, err)))
+        EWARNING(err, "fuse_reply_err");
+
+    // free
+    evsql_result_free(res);
+}
+
+void dbfs_lookup (struct fuse_req *req, fuse_ino_t parent, const char *name) {
+    struct dbfs *ctx = fuse_req_userdata(req);
+    int err;
+
+    INFO("[dbfs.lookup] parent=%lu name=%s", parent, name);
+    
+    // query and params
+    const char *sql = 
+        "SELECT"
+        " inodes.ino, inodes.type, inodes.mode, inodes.size, count(*)"
+        " FROM file_tree INNER JOIN inodes ON (file_tree.inode = inodes.ino)"
+        " WHERE file_tree.parent = $1::int4 AND file_tree.name = $2::varchar"
+        " GROUP BY inodes.ino, inodes.type, inodes.mode, inodes.size";
+    
+    static struct evsql_query_params params = EVSQL_PARAMS(EVSQL_FMT_BINARY) {
+        EVSQL_PARAM ( UINT32 ),
+        EVSQL_PARAM ( STRING ),
+
+        EVSQL_PARAMS_END
+    };
+    
+    // build params
+    if (0
+        ||  evsql_param_uint32(&params, 0, parent)
+        ||  evsql_param_string(&params, 1, name)
+    )
+        EERROR(err = EIO, "evsql_param_*");
+
+    // query
+    if (evsql_query_params(ctx->db, NULL, sql, &params, _dbfs_lookup_result, req) == NULL)
+        EERROR(err = EIO, "evsql_query_params");
+
+    // XXX: handle interrupts
+    
+    // wait
+    return;
+
+error:
+    if ((err = fuse_reply_err(req, err)))
+        EWARNING(err, "fuse_reply_err");
+}
+
+void _dbfs_getattr_result (const struct evsql_result_info *res, void *arg) {
+    struct fuse_req *req = arg;
+    struct stat st; ZINIT(st);
+    int err = 0;
+    
+    // check the results
+    if ((err = _dbfs_check_res(res, 1, 4)))
+        SERROR(err = (err ==  1 ? ENOENT : EIO));
+        
+    INFO("[dbfs.getattr %p] -> (stat follows)", req);
+    
+    // stat attrs
+    if (_dbfs_stat_info(&st, res, 0, 0))
+        goto error;
+
+    // XXX: we don't have the ino
+    st.st_ino = 0;
+
+    // reply
+    if ((err = fuse_reply_attr(req, &st, CACHE_TIMEOUT)))
+        EERROR(err, "fuse_reply_entry");
+
+error:
+    if (err && (err = fuse_reply_err(req, err)))
+        EWARNING(err, "fuse_reply_err");
+
+    // free
+    evsql_result_free(res);
+}
+
+void dbfs_getattr (struct fuse_req *req, fuse_ino_t ino, struct fuse_file_info *fi) {
+    struct dbfs *ctx = fuse_req_userdata(req);
+    int err;
+    
+    (void) fi;
+
+    INFO("[dbfs.getattr %p] ino=%lu", req, ino);
+
+    const char *sql =
+        "SELECT"
+        " inodes.type, inodes.mode, inodes.size, count(*)"
+        " FROM inodes"
+        " WHERE inodes.ino = $1::int4"
+        " GROUP BY inodes.type, inodes.mode, inodes.size";
+
+    static struct evsql_query_params params = EVSQL_PARAMS(EVSQL_FMT_BINARY) {
+        EVSQL_PARAM ( UINT32 ),
+
+        EVSQL_PARAMS_END
+    };
+
+    // build params
+    if (0
+        ||  evsql_param_uint32(&params, 0, ino)
+    )
+        SERROR(err = EIO);
+        
+    // query
+    if (evsql_query_params(ctx->db, NULL, sql, &params, _dbfs_getattr_result, req) == NULL)
+        SERROR(err = EIO);
+
+    // XXX: handle interrupts
+    
+    // wait
+    return;
+
+error:
+    if ((err = fuse_reply_err(req, err)))
+        EWARNING(err, "fuse_reply_err");
+}
+