terom@29: #ifndef DBFS_DBFS_H
terom@29: #define DBFS_DBFS_H
terom@29: 
terom@29: #include <sys/stat.h>
terom@29: #include <errno.h>
terom@29: 
terom@29: #include <event2/event.h>
terom@29: 
terom@29: #include "ops.h"
terom@29: #include "../evfuse.h"
terom@29: #include "../evsql.h"
terom@29: 
terom@29: /*
terom@29:  * Structs and functions shared between all dbfs components
terom@29:  */
terom@29: 
terom@29: #define SERROR(val) do { (val); goto error; } while(0)
terom@29: 
terom@29: struct dbfs {
terom@29:     struct event_base *ev_base;
terom@29:     
terom@29:     const char *db_conninfo;
terom@29:     struct evsql *db;
terom@29: 
terom@29:     struct evfuse *ev_fuse;
terom@29: };
terom@29: 
terom@29: // XXX: not sure how this should work
terom@29: #define CACHE_TIMEOUT 1.0
terom@29: 
terom@29: /*
terom@29:  * Convert the CHAR(4) inodes.type from SQL into a mode_t.
terom@29:  *
terom@29:  * Returns zero for unknown types.
terom@29:  */
terom@29: mode_t _dbfs_mode (const char *type);
terom@29: 
terom@29: /*
terom@29:  * Check that the number of rows and columns in the result set matches what we expect.
terom@29:  *
terom@29:  * If rows is nonzero, there must be exactly that many rows (mostly useful for rows=1).
terom@29:  * The number of columns must always be given, and match.
terom@29:  *
terom@29:  * Returns;
terom@29:  *  -1  if the query failed, the columns/rows do not match
terom@29:  *  0   the results match
terom@29:  *  1   there were no results (zero rows)
terom@29:  */
terom@29: int _dbfs_check_res (const struct evsql_result_info *res, size_t rows, size_t cols);
terom@29: 
terom@29: /*
terom@29:  * Fill a `struct state` with info retrieved from a SQL query.
terom@29:  *
terom@29:  * The result must contain four columns, starting at the given offset:
terom@29:  *  inodes.type, inodes.mode, inodes.size, count(*) AS nlink
terom@29:  *
terom@29:  * Note that this does not fill the st_ino field
terom@29:  */
terom@29: int _dbfs_stat_info (struct stat *st, const struct evsql_result_info *res, size_t row, size_t col_offset);
terom@29: 
terom@29: #endif /* DBFS_DBFS_H */