fsal_posixdb_status_t fsal_posixdb_deleteParent(fsal_posixdb_conn * p_conn, /* IN */ char *handleid_str, /* IN */ char *handlets_str, /* IN */ char *handleidparent_str, /* IN */ char *handletsparent_str, /* IN */ char *filename, /* IN */ int nlink) /* IN */ { PGresult *p_res; char nlink_str[MAX_NLINKSTR_SIZE]; const char *paramValues[3]; /* Sanity check */ if(!p_conn || !filename || nlink < 1) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } /* delete the Parent entry */ paramValues[0] = handleidparent_str; paramValues[1] = handletsparent_str; paramValues[2] = filename; /* invalidate name cache */ fsal_posixdb_InvalidateCache(); p_res = PQexecPrepared(p_conn, "deleteParent", 3, paramValues, NULL, NULL, 0); CheckCommand(p_res); /* delete the handle or update it */ if(nlink == 1) { /* delete the handle */ /* If there are other entries in the Parent table with this Handle, they will be deleted (thanks to foreign keys) */ paramValues[0] = handleid_str; paramValues[1] = handlets_str; /* invalidate cache */ fsal_posixdb_InvalidateCache(); p_res = PQexecPrepared(p_conn, "deleteHandle", 2, paramValues, NULL, NULL, 0); CheckCommand(p_res); } else { /* update the Handle entry ( Handle.nlink <- (nlink - 1) ) */ paramValues[0] = handleid_str; paramValues[1] = handlets_str; snprintf(nlink_str, MAX_NLINKSTR_SIZE, "%i", nlink - 1); paramValues[2] = nlink_str; /* invalidate cache */ fsal_posixdb_InvalidateCache(); p_res = PQexecPrepared(p_conn, "updateHandleNlink", 3, paramValues, NULL, NULL, 0); CheckCommand(p_res); } ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_delete(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_parent_directory_handle, /* IN */ fsal_name_t * p_filename, /* IN */ fsal_posixdb_fileinfo_t * p_object_info /* IN */ ) { result_handle_t res; fsal_posixdb_status_t st; char query[2048]; /******************* * 1/ sanity check * *******************/ if(!p_conn || !p_parent_directory_handle || !p_filename) ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); BeginTransaction(p_conn); /******************************* * 2/ we check the file exists * *******************************/ snprintf(query, 2048, "SELECT Parent.handleid, Parent.handlets, " "Handle.deviceid, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype " "FROM Parent INNER JOIN Handle ON Parent.handleid = Handle.handleid " "AND Parent.handlets=Handle.handlets " "WHERE handleidparent=%llu AND handletsparent=%u AND name='%s' " "FOR UPDATE", p_parent_directory_handle->data.id, p_parent_directory_handle->data.ts, p_filename->name); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; if(mysql_num_rows(res) != 1) { /* parent entry not found */ mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } mysql_free_result(res); /*********************************************** * 3/ Get information about the file to delete * ***********************************************/ st = fsal_posixdb_internal_delete(p_conn, p_parent_directory_handle->data.id, p_parent_directory_handle->data.ts, p_filename->name, p_object_info); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; return EndTransaction(p_conn); rollback: RollbackTransaction(p_conn); return st; }
fsal_posixdb_status_t fsal_posixdb_getParentDirHandle(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_object_handle, /* IN */ posixfsal_handle_t * p_parent_directory_handle /* OUT */ ) { fsal_posixdb_status_t st; MYSQL_ROW row; result_handle_t res; char query[2048]; /* sanity check */ if(!p_conn || !p_parent_directory_handle || !p_object_handle) ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); /* no need to start a transaction, there is only one query */ snprintf(query, 2048, "SELECT Parent.name, Parent.handleidparent, Parent.handletsparent, " "Handle.deviceid, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype " "FROM Parent LEFT JOIN Handle ON Parent.handleidparent = Handle.handleid AND Parent.handletsparent=Handle.handlets " "WHERE Parent.handleid=%llu AND Parent.handlets=%u", p_object_handle->data.id, p_object_handle->data.ts); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) return st; /* entry not found */ if(mysql_num_rows(res) == 0) { mysql_free_result(res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } row = mysql_fetch_row(res); if(row == NULL) { mysql_free_result(res); ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } LogDebug(COMPONENT_FSAL, "lookupPathsExt"); p_parent_directory_handle->data.id = atoll(row[1]); p_parent_directory_handle->data.ts = atoi(row[2]); posixdb_internal_fillFileinfoFromStrValues(&(p_parent_directory_handle->data.info), row[3], row[4], row[5], row[6], row[7]); mysql_free_result(res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
/** * @brief Lock the line of the Handle table with inode & devid defined in p_info * * @param p_conn * Database connection * @param p_info * Information about the file * * @return ERR_FSAL_POSIXDB_NOERR if no error, * another error code else. */ fsal_posixdb_status_t fsal_posixdb_lockHandleForUpdate(fsal_posixdb_conn * p_conn, /* IN */ fsal_posixdb_fileinfo_t * p_info /* IN */ ) { result_handle_t res; fsal_posixdb_status_t st; char query[2048]; BeginTransaction(p_conn); snprintf(query, 2048, "SELECT handleid, handlets, nlink, ctime, ftype " "FROM Handle WHERE deviceid=%llu AND inode=%llu " "FOR UPDATE", (unsigned long long)p_info->devid, (unsigned long long)p_info->inode); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) { RollbackTransaction(p_conn); return st; } mysql_free_result(res); /* Do not end the transaction, because it will be closed by the next call to a posixdb function */ ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
/** * @brief Lock the line of the Handle table with inode & devid defined in p_info * * @param p_conn * Database connection * @param p_info * Information about the file * * @return ERR_FSAL_POSIXDB_NOERR if no error, * another error code else. */ fsal_posixdb_status_t fsal_posixdb_lockHandleForUpdate(fsal_posixdb_conn * p_conn, /* IN */ fsal_posixdb_fileinfo_t * p_info /* IN */ ) { PGresult *p_res; char devid_str[MAX_DEVICEIDSTR_SIZE]; char inode_str[MAX_INODESTR_SIZE]; const char *paramValues[2]; CheckConn(p_conn); BeginTransaction(p_conn, p_res); snprintf(devid_str, MAX_DEVICEIDSTR_SIZE, "%lli", (long long int)p_info->devid); snprintf(inode_str, MAX_INODESTR_SIZE, "%lli", (long long int)p_info->inode); paramValues[0] = devid_str; paramValues[1] = inode_str; p_res = PQexecPrepared(p_conn, "lookupHandleByInodeFU", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); PQclear(p_res); /* Do not end the transaction, because it will be closed by the next call to a posixdb function */ ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t posixdb_internal_fillFileinfoFromStrValues(fsal_posixdb_fileinfo_t * p_info, char *devid_str, char *inode_str, char *nlink_str, char *ctime_str, char *ftype_str) { if(!p_info) ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); p_info->devid = devid_str ? (dev_t) atoll(devid_str) : 0; p_info->inode = inode_str ? (ino_t) atoll(inode_str) : 0; p_info->nlink = nlink_str ? atoi(nlink_str) : 0; p_info->ctime = ctime_str ? (time_t) atoi(ctime_str) : 0; p_info->ftype = ftype_str ? (fsal_nodetype_t) atoi(ftype_str) : 0; ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
/** * @brief Unlock the Handle line previously locked by fsal_posixdb_lockHandleForUpdate * * @param p_conn * Database connection * * @return ERR_FSAL_POSIXDB_NOERR if no error, * another error code else. */ fsal_posixdb_status_t fsal_posixdb_cancelHandleLock(fsal_posixdb_conn * p_conn /* IN */ ) { PGresult *p_res; PGTransactionStatusType transStatus = PQtransactionStatus(p_conn); if(transStatus == PQTRANS_ACTIVE || transStatus == PQTRANS_INTRANS) { RollbackTransaction(p_conn, p_res); } ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_getParentDirHandle(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_object_handle, /* IN */ posixfsal_handle_t * p_parent_directory_handle /* OUT */ ) { PGresult *p_res; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; const char *paramValues[2] = { handleid_str, handlets_str }; /* sanity check */ if(!p_conn || !p_parent_directory_handle || !p_object_handle) CheckConn(p_conn); /* no need to start a transaction, there is anly one query */ snprintf(handleid_str, MAX_HANDLEIDSTR_SIZE, "%lli", p_object_handle->data.id); snprintf(handlets_str, MAX_HANDLETSSTR_SIZE, "%i", p_object_handle->data.ts); p_res = PQexecPrepared(p_conn, "lookupPathsExt", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); /* entry not found */ if(!PQntuples(p_res)) { PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } LogDebug(COMPONENT_FSAL, "lookupPathsExt"); p_parent_directory_handle->data.id = atoll(PQgetvalue(p_res, 0, 1)); p_parent_directory_handle->data.ts = atoi(PQgetvalue(p_res, 0, 2)); posixdb_internal_fillFileinfoFromStrValues(&(p_parent_directory_handle->data.info), PQgetvalue(p_res, 0, 3), PQgetvalue(p_res, 0, 4), PQgetvalue(p_res, 0, 5), /* nlink */ PQgetvalue(p_res, 0, 6), /* ctime */ PQgetvalue(p_res, 0, 7) /* ftype */ ); PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_flush(fsal_posixdb_conn * p_conn) { PGresult *p_res; p_res = PQexec(p_conn, "DELETE FROM Parent"); CheckCommand(p_res); PQclear(p_res); p_res = PQexec(p_conn, "DELETE FROM Handle"); CheckCommand(p_res); PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_getInfoFromHandle(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_object_handle, /* IN/OUT */ fsal_path_t * p_paths, /* OUT */ int paths_size, /* IN */ int *p_count /* OUT */ ) { PGresult *p_res; fsal_posixdb_status_t st; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; posixfsal_handle_t parent_directory_handle; int i_path; int toomanypaths = 0; const char *paramValues[2] = { handleid_str, handlets_str }; /* sanity check */ if(!p_conn || !p_object_handle || ((!p_paths || !p_count) && paths_size > 0)) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } CheckConn(p_conn); LogFullDebug(COMPONENT_FSAL, "OBJECT_ID=%lli\n", p_object_handle->data.id); BeginTransaction(p_conn, p_res); /* lookup for the handle of the file */ snprintf(handleid_str, MAX_HANDLEIDSTR_SIZE, "%lli", p_object_handle->data.id); snprintf(handlets_str, MAX_HANDLETSSTR_SIZE, "%i", p_object_handle->data.ts); if(!fsal_posixdb_GetInodeCache(p_object_handle)) { p_res = PQexecPrepared(p_conn, "lookupHandle", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); /* p_res contains : Handle.deviceId, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype */ LogDebug(COMPONENT_FSAL, "lookupHandle(%u,%u)", (unsigned int)p_object_handle->data.id, (unsigned int)p_object_handle->data.ts); /* entry not found */ if(PQntuples(p_res) != 1) { LogDebug(COMPONENT_FSAL, "lookupHandle=%d entries", PQntuples(p_res)); RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } posixdb_internal_fillFileinfoFromStrValues(&(p_object_handle->data.info), PQgetvalue(p_res, 0, 0), PQgetvalue(p_res, 0, 1), PQgetvalue(p_res, 0, 2), /* nlink */ PQgetvalue(p_res, 0, 3), /* ctime */ PQgetvalue(p_res, 0, 4) /* ftype */ ); PQclear(p_res); /* update the inode */ fsal_posixdb_UpdateInodeCache(p_object_handle); } /* Build the paths of the object */ if(p_paths) { /* find all the paths to the object */ p_res = PQexecPrepared(p_conn, "lookupPaths", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); /* p_res contains name, handleidparent, handletsparent */ *p_count = PQntuples(p_res); if(*p_count == 0) { RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOPATH, 0); } if(*p_count > paths_size) { toomanypaths = 1; LogCrit(COMPONENT_FSAL, "Too many paths found for object %s.%s: found=%u, max=%d", handleid_str, handlets_str, *p_count, paths_size); *p_count = paths_size; } for(i_path = 0; i_path < *p_count; i_path++) { unsigned int tmp_len; /* build the path of the parent directory */ parent_directory_handle.data.id = atoll(PQgetvalue(p_res, i_path, 1)); parent_directory_handle.data.ts = atoi(PQgetvalue(p_res, i_path, 2)); st = fsal_posixdb_buildOnePath(p_conn, &parent_directory_handle, &p_paths[i_path]); if(st.major != ERR_FSAL_POSIXDB_NOERR) { RollbackTransaction(p_conn, p_res); return st; } tmp_len = p_paths[i_path].len; if((tmp_len > 0) && (p_paths[i_path].path[tmp_len - 1] == '/')) { /* then concatenate the name of the file */ /* but not concatenate '/' */ if((tmp_len + strlen(PQgetvalue(p_res, i_path, 0)) >= FSAL_MAX_PATH_LEN)) { RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } strcpy(&p_paths[i_path].path[tmp_len], PQgetvalue(p_res, i_path, 0)); p_paths[i_path].len += strlen(PQgetvalue(p_res, i_path, 0)); } else { /* then concatenate the name of the file */ if((tmp_len + 1 + strlen(PQgetvalue(p_res, i_path, 0)) >= FSAL_MAX_PATH_LEN)) { RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } p_paths[i_path].path[tmp_len] = '/'; strcpy(&p_paths[i_path].path[tmp_len + 1], PQgetvalue(p_res, i_path, 0)); p_paths[i_path].len += 1 + strlen(PQgetvalue(p_res, i_path, 0)); } /* insert the object into cache */ fsal_posixdb_CachePath(p_object_handle, &p_paths[i_path]); } PQclear(p_res); } EndTransaction(p_conn, p_res); ReturnCodeDB(toomanypaths ? ERR_FSAL_POSIXDB_TOOMANYPATHS : ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_internal_delete(fsal_posixdb_conn * p_conn, /* IN */ char *handleidparent_str, /* IN */ char *handletsparent_str, /* IN */ char *filename, /* IN */ fsal_posixdb_fileinfo_t * p_object_info /* IN */ ) { PGresult *p_res; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; fsal_posixdb_status_t st; fsal_posixdb_fileinfo_t infodb; const char *paramValues[3]; if(!p_conn || !handleidparent_str || !handletsparent_str || !filename) ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); paramValues[0] = handleidparent_str; paramValues[1] = handletsparent_str; paramValues[2] = filename; p_res = PQexecPrepared(p_conn, "lookupHandleByNameFU", 3, paramValues, NULL, NULL, 0); CheckResult(p_res); /* p_res contains : handleid, handlets, deviceId, inode, nlink, ctime, ftype */ /* no entry found */ if(PQntuples(p_res) != 1) { ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } strncpy(handleid_str, PQgetvalue(p_res, 0, 0), MAX_HANDLEIDSTR_SIZE); strncpy(handlets_str, PQgetvalue(p_res, 0, 1), MAX_HANDLETSSTR_SIZE); /* consistency check */ /* fill 'infodb' with information about the handle in the database */ posixdb_internal_fillFileinfoFromStrValues(&infodb, PQgetvalue(p_res, 0, 2), /* no need to compare inode & devid, they are the same */ PQgetvalue(p_res, 0, 3), PQgetvalue(p_res, 0, 4), /* nlink */ PQgetvalue(p_res, 0, 5), /* ctime */ PQgetvalue(p_res, 0, 6) /* ftype */ ); PQclear(p_res); if(p_object_info && fsal_posixdb_consistency_check(&infodb, p_object_info)) { /* not consistent, the bad handle have to be deleted */ LogCrit(COMPONENT_FSAL, "Consistency check failed while deleting a Path : Handle deleted"); infodb.ftype = FSAL_TYPE_DIR; /* considers that the entry is a directory in order to delete all its Parent entries and its Handle */ } switch (infodb.ftype) { case FSAL_TYPE_DIR: /* directory */ st = fsal_posixdb_recursiveDelete(p_conn, handleid_str, handlets_str, infodb.ftype); break; default: st = fsal_posixdb_deleteParent(p_conn, handleid_str, handlets_str, handleidparent_str, handletsparent_str, filename, infodb.nlink); } return st; }
fsal_posixdb_status_t fsal_posixdb_disconnect(fsal_posixdb_conn * p_conn) { mysql_close(&p_conn->db_conn); gsh_free(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_recursiveDelete(fsal_posixdb_conn * p_conn, char *handleid_str, char *handlets_str, fsal_nodetype_t ftype) { PGresult *p_res; fsal_posixdb_status_t st; fsal_nodetype_t ftype_tmp; unsigned int i; unsigned int i_max; const char *paramValues[2]; /* Sanity check */ if(!p_conn || !handleid_str || !handlets_str) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } if(ftype == FSAL_TYPE_DIR) { /* We find all the children of the directory in order to delete them, and then we delete the current handle */ paramValues[0] = handleid_str; paramValues[1] = handlets_str; p_res = PQexecPrepared(p_conn, "lookupChildrenFU", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); i_max = (unsigned int)PQntuples(p_res); for(i = 0; i < i_max; i++) { ftype_tmp = (fsal_nodetype_t) atoi(PQgetvalue(p_res, i, 2)); if(ftype_tmp == FSAL_TYPE_DIR) { st = fsal_posixdb_recursiveDelete(p_conn, PQgetvalue(p_res, i, 0), PQgetvalue(p_res, i, 1), ftype_tmp); } else { st = fsal_posixdb_deleteParent(p_conn, PQgetvalue(p_res, i, 0), /* handleidparent */ PQgetvalue(p_res, i, 1), /* handletsparent */ handleid_str, handlets_str, PQgetvalue(p_res, i, 3), /* filename */ atoi(PQgetvalue(p_res, i, 4)) /* nlink */ ); } if(FSAL_POSIXDB_IS_ERROR(st)) { PQclear(p_res); return st; } } PQclear(p_res); } /* Delete the Handle */ /* All Parent entries having this handle will be deleted thanks to foreign keys */ paramValues[0] = handleid_str; paramValues[1] = handlets_str; /* invalidate name cache */ fsal_posixdb_InvalidateCache(); p_res = PQexecPrepared(p_conn, "deleteHandle", 2, paramValues, NULL, NULL, 0); CheckCommand(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_buildOnePath(fsal_posixdb_conn * p_conn, posixfsal_handle_t * p_handle, fsal_path_t * p_path) { PGresult *p_res; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; unsigned int shift; char *new_pos; int toomanypaths = 0; const char *paramValues[2] = { handleid_str, handlets_str }; if(!p_conn || !p_handle || !p_path) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } /* init values */ memset(p_path, 0, sizeof(fsal_path_t)); /* Nothing to do, it's the root path */ if(p_handle->data.id == 0 && p_handle->data.ts == 0) ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); /* check if the entry is in the cache */ if(fsal_posixdb_GetPathCache(p_handle, p_path)) ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); snprintf(handleid_str, MAX_HANDLEIDSTR_SIZE, "%lli", p_handle->data.id); snprintf(handlets_str, MAX_HANDLETSSTR_SIZE, "%i", p_handle->data.ts); /* with PL/PGSQL */ #ifdef _WITH_PLPGSQL p_res = PQexecPrepared(p_conn, "buildOnePathPL", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); p_path->len = strlen(PQgetvalue(p_res, 0, 0)); if(p_path->len >= FSAL_MAX_PATH_LEN) { PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } strcpy(p_path->path, PQgetvalue(p_res, 0, 0)); PQclear(p_res); /* set result in cache */ fsal_posixdb_CachePath(p_handle, p_path); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); #else /* without PL/PGSQL */ while(handleid_str[0] != '\0') { p_res = PQexecPrepared(p_conn, "buildOnePath", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); if(PQntuples(p_res) == 0) { PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); /* not found */ } if(PQntuples(p_res) > 1) { LogCrit(COMPONENT_FSAL, "Too many paths found for object %s.%s: found=%d, expected=1", handleid_str, handlets_str, PQntuples(p_res)); toomanypaths++; /* too many entries */ } if(!strncmp(handleid_str, PQgetvalue(p_res, 0, 1), MAX_HANDLEIDSTR_SIZE) && !strncmp(handlets_str, PQgetvalue(p_res, 0, 2), MAX_HANDLETSSTR_SIZE)) { PQclear(p_res); break; /* handle is equal to its parent handle (root reached) */ } strncpy(handleid_str, PQgetvalue(p_res, 0, 1), MAX_HANDLEIDSTR_SIZE); strncpy(handlets_str, PQgetvalue(p_res, 0, 2), MAX_HANDLETSSTR_SIZE); /* insertion of the name at the beginning of the path */ shift = strlen(PQgetvalue(p_res, 0, 0)); if(p_path->len + shift >= FSAL_MAX_PATH_LEN) { PQclear(p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } new_pos = p_path->path + shift; memmove(new_pos, p_path->path, p_path->len); memcpy(p_path->path, PQgetvalue(p_res, 0, 0), shift); p_path->len += shift; PQclear(p_res); } if(toomanypaths) { LogCrit(COMPONENT_FSAL, "Returned path: %s", p_path->path); ReturnCodeDB(ERR_FSAL_POSIXDB_TOOMANYPATHS, toomanypaths); /* too many entries */ } else { /* set result in cache */ fsal_posixdb_CachePath(p_handle, p_path); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); } #endif }
fsal_posixdb_status_t fsal_posixdb_initPreparedQueries(fsal_posixdb_conn * p_conn) { int rc; unsigned int retry = 1; static const char *buildonepath_query = "SELECT CONCAT('/',name), handleidparent, handletsparent FROM Parent WHERE handleid=? AND handlets=?"; /* @TODO retry = lmgr_config.connect_retry_min; */ /* create prepared statements */ do { /* First create the prepared statement */ p_conn->stmt_tab[BUILDONEPATH] = mysql_stmt_init(&p_conn->db_conn); /* retry if connection to server failed */ if((p_conn->stmt_tab[BUILDONEPATH] == NULL) && db_is_retryable(mysql_errno(&p_conn->db_conn))) { LogCrit(COMPONENT_FSAL, "Connection to database lost in %s()... Retrying in %u sec.", __FUNCTION__, retry); sleep(retry); retry *= 2; /*if ( retry > lmgr_config.connect_retry_max ) retry = lmgr_config.connect_retry_max; */ } else break; } while(1); if(!p_conn->stmt_tab[BUILDONEPATH]) ReturnCodeDB(ERR_FSAL_POSIXDB_CMDFAILED, mysql_errno(&p_conn->db_conn)); /* another retry loop */ /* @TODO retry = lmgr_config.connect_retry_min; */ retry = 1; do { /* prepare the request */ rc = mysql_stmt_prepare(p_conn->stmt_tab[BUILDONEPATH], buildonepath_query, strlen(buildonepath_query)); if(rc && db_is_retryable(mysql_stmt_errno(p_conn->stmt_tab[BUILDONEPATH]))) { LogCrit(COMPONENT_FSAL, "Connection to database lost in %s()... Retrying in %u sec.", __FUNCTION__, retry); sleep(retry); retry *= 2; /*if ( retry > lmgr_config.connect_retry_max ) retry = lmgr_config.connect_retry_max; */ } else break; } while(1); if(rc) { LogCrit(COMPONENT_FSAL, "Failed to create prepared statement: Error: %s (query='%s')", mysql_stmt_error(p_conn->stmt_tab[BUILDONEPATH]), buildonepath_query); mysql_stmt_close(p_conn->stmt_tab[BUILDONEPATH]); ReturnCodeDB(ERR_FSAL_POSIXDB_CMDFAILED, rc); } ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_getInfoFromHandle(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_object_handle, /* IN/OUT */ fsal_path_t * p_paths, /* OUT */ int paths_size, /* IN */ int *p_count /* OUT */ ) { fsal_posixdb_status_t st; result_handle_t res; MYSQL_ROW row; posixfsal_handle_t parent_directory_handle; int i_path; int toomanypaths = 0; char query[2048]; /* sanity check */ if(!p_conn || !p_object_handle || ((!p_paths || !p_count) && paths_size > 0)) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } LogFullDebug(COMPONENT_FSAL, "OBJECT_ID=%lli\n", p_object_handle->data.id); BeginTransaction(p_conn); /* lookup for the handle of the file */ if(!fsal_posixdb_GetInodeCache(p_object_handle)) { snprintf(query, 2048, "SELECT Handle.deviceid, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype " "FROM Handle WHERE handleid=%llu AND handlets=%u", p_object_handle->data.id, p_object_handle->data.ts); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; /* p_res contains : Handle.deviceId, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype */ LogDebug(COMPONENT_FSAL, "lookupHandle(%llu,%u)", p_object_handle->data.id, (unsigned int)p_object_handle->data.ts); if((mysql_num_rows(res) != 1) || ((row = mysql_fetch_row(res)) == NULL)) { LogDebug(COMPONENT_FSAL, "lookupHandle=%d entries", mysql_num_rows(res)); mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } posixdb_internal_fillFileinfoFromStrValues(&(p_object_handle->data.info), row[0], row[1], row[2], row[3], row[4]); mysql_free_result(res); /* update the inode */ fsal_posixdb_UpdateInodeCache(p_object_handle); } /* Build the paths of the object */ if(p_paths) { /* find all the paths to the object */ snprintf(query, 2048, "SELECT name, handleidparent, handletsparent " "FROM Parent WHERE handleid=%llu AND handlets=%u", p_object_handle->data.id, p_object_handle->data.ts); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; /* res contains name, handleidparent, handletsparent */ *p_count = mysql_num_rows(res); if(*p_count == 0) { mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOPATH, 0); } else if(*p_count > paths_size) { toomanypaths = 1; LogCrit(COMPONENT_FSAL, "Too many paths found for object %llu.%u: found=%u, max=%d", p_object_handle->data.id, p_object_handle->data.ts, *p_count, paths_size); *p_count = paths_size; } for(i_path = 0; i_path < *p_count; i_path++) { unsigned int tmp_len; row = mysql_fetch_row(res); if(row == NULL) { mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } /* build the path of the parent directory */ parent_directory_handle.data.id = atoll(row[1]); parent_directory_handle.data.ts = atoi(row[2]); st = fsal_posixdb_buildOnePath(p_conn, &parent_directory_handle, &p_paths[i_path]); if(FSAL_POSIXDB_IS_ERROR(st)) goto free_res; tmp_len = p_paths[i_path].len; if((tmp_len > 0) && (p_paths[i_path].path[tmp_len - 1] == '/')) { /* then concatenate the name of the file */ /* but not concatenate '/' */ if((tmp_len + strlen(row[0]) >= FSAL_MAX_PATH_LEN)) { mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } strcpy(&p_paths[i_path].path[tmp_len], row[0]); p_paths[i_path].len += strlen(row[0]); } else { /* then concatenate the name of the file */ if((tmp_len + 1 + strlen(row[0]) >= FSAL_MAX_PATH_LEN)) { mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } p_paths[i_path].path[tmp_len] = '/'; strcpy(&p_paths[i_path].path[tmp_len + 1], row[0]); p_paths[i_path].len += 1 + strlen(row[0]); } /* insert the object into cache */ fsal_posixdb_CachePath(p_object_handle, &p_paths[i_path]); } mysql_free_result(res); } st = EndTransaction(p_conn); if(toomanypaths) ReturnCodeDB(ERR_FSAL_POSIXDB_TOOMANYPATHS, 0); else return st; free_res: mysql_free_result(res); rollback: RollbackTransaction(p_conn); return st; }
fsal_posixdb_status_t fsal_posixdb_getInfoFromName(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_parent_directory_handle, /* IN/OUT */ fsal_name_t * p_objectname, /* IN */ fsal_path_t * p_path, /* OUT */ posixfsal_handle_t * p_handle /* OUT */ ) { fsal_posixdb_status_t st; char query[2048]; result_handle_t res; MYSQL_ROW row; /* sanity check */ if(!p_conn || !p_handle) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } LogFullDebug(COMPONENT_FSAL, "object_name='%s'\n", p_objectname->name ? p_objectname->name : "/"); BeginTransaction(p_conn); /* lookup for the handle of the file */ if(p_parent_directory_handle && p_parent_directory_handle->data.id) { snprintf(query, 2048, "SELECT Parent.handleid, Parent.handlets, Handle.deviceid, " "Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype " "FROM Parent INNER JOIN Handle ON Parent.handleid = Handle.handleid AND Parent.handlets=Handle.handlets " "WHERE handleidparent=%llu AND handletsparent=%u AND name='%s'", p_parent_directory_handle->data.id, p_parent_directory_handle->data.ts, p_objectname->name); st = db_exec_sql(p_conn, query, &res); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; } else { /* get root handle: */ st = db_exec_sql(p_conn, "SELECT Parent.handleid, Parent.handlets, Handle.deviceid, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype " "FROM Parent INNER JOIN Handle ON Parent.handleid = Handle.handleid AND Parent.handlets=Handle.handlets " "WHERE Parent.handleidparent=Parent.handleid AND Parent.handletsparent=Parent.handlets", &res); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; } /* res contains : Parent.handleid, Parent.handlets, Handle.deviceid, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype */ /* entry not found */ if((mysql_num_rows(res) != 1) || ((row = mysql_fetch_row(res)) == NULL)) { mysql_free_result(res); RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } p_handle->data.id = atoll(row[0]); p_handle->data.ts = atoi(row[1]); posixdb_internal_fillFileinfoFromStrValues(&(p_handle->data.info), row[2], row[3], /* devid, inode */ row[4], /* nlink */ row[5], /* ctime */ row[6]); /* ftype */ mysql_free_result(res); /* Build the path of the object */ if(p_path && p_objectname) { /* build the path of the Parent */ st = fsal_posixdb_buildOnePath(p_conn, p_parent_directory_handle, p_path); if(FSAL_POSIXDB_IS_ERROR(st)) goto rollback; /* then concatenate the filename */ if(!(p_path->len + 1 + p_objectname->len < FSAL_MAX_PATH_LEN)) { RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } p_path->path[p_path->len] = '/'; strcpy(&p_path->path[p_path->len + 1], p_objectname->name); p_path->len += 1 + p_objectname->len; /* add the the path to cache */ fsal_posixdb_CachePath(p_handle, p_path); } else { /* update handle if it was in cache */ fsal_posixdb_UpdateInodeCache(p_handle); } return EndTransaction(p_conn); rollback: RollbackTransaction(p_conn); return st; }
fsal_posixdb_status_t fsal_posixdb_add(fsal_posixdb_conn * p_conn, /* IN */ fsal_posixdb_fileinfo_t * p_object_info, /* IN */ posixfsal_handle_t * p_parent_directory_handle, /* IN */ fsal_name_t * p_filename, /* IN */ posixfsal_handle_t * p_object_handle /* OUT */ ) { PGresult *p_res; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; char handleidparent_str[MAX_HANDLEIDSTR_SIZE]; char handletsparent_str[MAX_HANDLETSSTR_SIZE]; char devid_str[MAX_DEVICEIDSTR_SIZE]; char inode_str[MAX_INODESTR_SIZE]; int found; const char *paramValues[6]; fsal_posixdb_status_t st; /******************* * 1/ sanity check * *******************/ /* parent_directory and filename are NULL only if it is the root directory */ if(!p_conn || !p_object_info || !p_object_handle || (p_filename && !p_parent_directory_handle) || (!p_filename && p_parent_directory_handle)) ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); CheckConn(p_conn); LogFullDebug(COMPONENT_FSAL, "adding entry with parentid=%llu, id=%"PRIu64", name=%s\n", p_parent_directory_handle ? p_parent_directory_handle->data.id : 0, p_object_info ? p_object_info->inode : 0, p_filename ? p_filename->name : "NULL"); BeginTransaction(p_conn, p_res); /********************************* * 2/ we check the parent handle * *********************************/ if(p_parent_directory_handle) { /* the root has no parent */ snprintf(handleidparent_str, MAX_HANDLEIDSTR_SIZE, "%llu", p_parent_directory_handle->data.id); snprintf(handletsparent_str, MAX_HANDLETSSTR_SIZE, "%i", p_parent_directory_handle->data.ts); paramValues[0] = handleidparent_str; paramValues[1] = handletsparent_str; p_res = PQexecPrepared(p_conn, "lookupHandle", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); if(PQntuples(p_res) != 1) { /* parent entry not found */ RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } PQclear(p_res); } /********************************************************** * 3/ Check if there is an existing Handle for the object * **********************************************************/ snprintf(devid_str, MAX_DEVICEIDSTR_SIZE, "%llu", (unsigned long long int)p_object_info->devid); snprintf(inode_str, MAX_INODESTR_SIZE, "%llu", (unsigned long long int)p_object_info->inode); paramValues[0] = devid_str; paramValues[1] = inode_str; p_res = PQexecPrepared(p_conn, "lookupHandleByInodeFU", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); found = (PQntuples(p_res) == 1); if(found) { /* a Handle (that matches devid & inode) already exists */ /* fill 'info' with information about the handle in the database */ posixdb_internal_fillFileinfoFromStrValues(&(p_object_handle->data.info), NULL, NULL, PQgetvalue(p_res, 0, 2), /* nlink */ PQgetvalue(p_res, 0, 3), /* ctime */ PQgetvalue(p_res, 0, 4) /* ftype */ ); p_object_handle->data.info.inode = p_object_info->inode; p_object_handle->data.info.devid = p_object_info->devid; strncpy(handleid_str, PQgetvalue(p_res, 0, 0), MAX_HANDLEIDSTR_SIZE); strncpy(handlets_str, PQgetvalue(p_res, 0, 1), MAX_HANDLETSSTR_SIZE); PQclear(p_res); p_object_handle->data.id = atoll(handleid_str); p_object_handle->data.ts = atoi(handlets_str); /* check the consistency of the handle */ if(fsal_posixdb_consistency_check(&(p_object_handle->data.info), p_object_info)) { /* consistency check failed */ /* p_object_handle has been filled in order to be able to fix the consistency later */ RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_CONSISTENCY, 0); } /* update nlink & ctime if needed */ if(p_object_info->nlink != p_object_handle->data.info.nlink || p_object_info->ctime != p_object_handle->data.info.ctime) { char nlink_str[MAX_NLINKSTR_SIZE]; char ctime_str[MAX_CTIMESTR_SIZE]; snprintf(nlink_str, MAX_NLINKSTR_SIZE, "%i", p_object_info->nlink); snprintf(ctime_str, MAX_CTIMESTR_SIZE, "%i", (int)p_object_info->ctime); paramValues[0] = handleid_str; paramValues[1] = handlets_str; paramValues[2] = nlink_str; paramValues[3] = ctime_str; p_object_handle->data.info = *p_object_info; p_res = PQexecPrepared(p_conn, "updateHandle", 4, paramValues, NULL, NULL, 0); CheckCommand(p_res); } fsal_posixdb_UpdateInodeCache(p_object_handle); } else { /* no handle found */ /* Handle does not exist, add a new Handle entry */ char nlink_str[MAX_NLINKSTR_SIZE]; char ctime_str[MAX_CTIMESTR_SIZE]; char ftype_str[MAX_FTYPESTR_SIZE]; PQclear(p_res); p_object_handle->data.ts = (int)time(NULL); p_object_handle->data.info = *p_object_info; snprintf(handlets_str, MAX_HANDLETSSTR_SIZE, "%i", p_object_handle->data.ts); snprintf(nlink_str, MAX_NLINKSTR_SIZE, "%i", p_object_info->nlink); snprintf(ctime_str, MAX_CTIMESTR_SIZE, "%i", (int)p_object_info->ctime); snprintf(ftype_str, MAX_CTIMESTR_SIZE, "%i", (int)p_object_info->ftype); paramValues[0] = devid_str; paramValues[1] = inode_str; paramValues[2] = handlets_str; paramValues[3] = nlink_str; paramValues[4] = ctime_str; paramValues[5] = ftype_str; p_res = PQexecPrepared(p_conn, "insertHandle", 6, paramValues, NULL, NULL, 0); CheckCommand(p_res); PQclear(p_res); p_res = PQexecPrepared(p_conn, "lookupHandleByInodeFU", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); strncpy(handleid_str, PQgetvalue(p_res, 0, 0), MAX_HANDLEIDSTR_SIZE); strncpy(handlets_str, PQgetvalue(p_res, 0, 1), MAX_HANDLETSSTR_SIZE); p_object_handle->data.id = atoll(PQgetvalue(p_res, 0, 0)); PQclear(p_res); /* now, we have the handle id */ fsal_posixdb_UpdateInodeCache(p_object_handle); } /************************************************ * add (or update) an entry in the Parent table * ************************************************/ paramValues[0] = p_parent_directory_handle ? handleidparent_str : handleid_str; paramValues[1] = p_parent_directory_handle ? handletsparent_str : handlets_str; paramValues[2] = p_filename ? p_filename->name : ""; p_res = PQexecPrepared(p_conn, "lookupParent", 3, paramValues, NULL, NULL, 0); CheckResult(p_res); /* p-res contains handleid & handlets */ found = (PQntuples(p_res) == 1); paramValues[3] = handleid_str; paramValues[4] = handlets_str; if(found) { /* update the Parent entry if necessary (there entry exists with another handle) */ if((fsal_u64_t) atoll(PQgetvalue(p_res, 0, 0)) != p_object_handle->data.id || atoi(PQgetvalue(p_res, 0, 1)) != p_object_handle->data.ts) { /* steps : - check the nlink value of the Parent entry to be overwritten - if nlink = 1, then we can delete the handle. else we have to update it (nlink--) : that is done by fsal_posixdb_deleteParent - update the handle of the entry */ char bad_handleid_str[MAX_HANDLEIDSTR_SIZE]; char bad_handlets_str[MAX_HANDLETSSTR_SIZE]; int nlink; strncpy(bad_handleid_str, PQgetvalue(p_res, 0, 0), MAX_HANDLEIDSTR_SIZE); strncpy(bad_handlets_str, PQgetvalue(p_res, 0, 1), MAX_HANDLETSSTR_SIZE); PQclear(p_res); /* clear old res before a new query */ /* check the nlink value of the entry to be updated */ paramValues[0] = handleidparent_str; paramValues[1] = handletsparent_str; p_res = PQexecPrepared(p_conn, "lookupHandleFU", 2, paramValues, NULL, NULL, 0); CheckResult(p_res); found = (PQntuples(p_res) == 1); if(found) { /* we have retrieved the handle information of the bad entry */ nlink = atoi(PQgetvalue(p_res, 0, 4)); PQclear(p_res); /* clear old res before a new query */ /* a Parent entry already exists, we delete it */ st = fsal_posixdb_deleteParent(p_conn, bad_handleid_str, bad_handlets_str, p_parent_directory_handle ? handleidparent_str : handleid_str, p_parent_directory_handle ? handletsparent_str : handlets_str, p_filename ? p_filename->name : "", nlink); if(FSAL_POSIXDB_IS_ERROR(st)) { RollbackTransaction(p_conn, p_res); return st; } } else { /* the Handle line has been deleted */ PQclear(p_res); /* clear old res before a new query */ } /* the bad entry has been deleted. Now we had a new Parent entry */ goto add_new_parent_entry; } else { /* a Parent entry exists with our handle, nothing to do */ PQclear(p_res); } } else { /* add a Parent entry */ PQclear(p_res); add_new_parent_entry: paramValues[0] = p_parent_directory_handle ? handleidparent_str : handleid_str; paramValues[1] = p_parent_directory_handle ? handletsparent_str : handlets_str; paramValues[2] = p_filename ? p_filename->name : ""; paramValues[3] = handleid_str; paramValues[4] = handlets_str; p_res = PQexecPrepared(p_conn, "insertParent", 5, paramValues, NULL, NULL, 0); CheckCommand(p_res); PQclear(p_res); /* XXX : is it possible to have unique key violation ? */ } EndTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
fsal_posixdb_status_t fsal_posixdb_getInfoFromName(fsal_posixdb_conn * p_conn, /* IN */ posixfsal_handle_t * p_parent_directory_handle, /* IN/OUT */ fsal_name_t * p_objectname, /* IN */ fsal_path_t * p_path, /* OUT */ posixfsal_handle_t * p_handle /* OUT */ ) { PGresult *p_res; fsal_posixdb_status_t st; char handleid_str[MAX_HANDLEIDSTR_SIZE]; char handlets_str[MAX_HANDLETSSTR_SIZE]; const char *paramValues[3] = { handleid_str, handlets_str, p_objectname->name }; /* sanity check */ if(!p_conn || !p_handle) { ReturnCodeDB(ERR_FSAL_POSIXDB_FAULT, 0); } CheckConn(p_conn); LogFullDebug(COMPONENT_FSAL, "object_name='%s'\n", p_objectname->name); BeginTransaction(p_conn, p_res); /* lookup for the handle of the file */ if(p_parent_directory_handle && p_parent_directory_handle->data.id) { snprintf(handleid_str, MAX_HANDLEIDSTR_SIZE, "%lli", p_parent_directory_handle->data.id); snprintf(handlets_str, MAX_HANDLETSSTR_SIZE, "%i", p_parent_directory_handle->data.ts); p_res = PQexecPrepared(p_conn, "lookupHandleByName", 3, paramValues, NULL, NULL, 0); CheckResult(p_res); } else { // get root handle : p_res = PQexecPrepared(p_conn, "lookupRootHandle", 0, NULL, NULL, NULL, 0); CheckResult(p_res); } /* p_res contains : Parent.handleid, Parent.handlets, Handle.deviceId, Handle.inode, Handle.nlink, Handle.ctime, Handle.ftype */ /* entry not found */ if(PQntuples(p_res) != 1) { PQclear(p_res); RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOENT, 0); } p_handle->data.id = atoll(PQgetvalue(p_res, 0, 0)); p_handle->data.ts = atoi(PQgetvalue(p_res, 0, 1)); posixdb_internal_fillFileinfoFromStrValues(&(p_handle->data.info), PQgetvalue(p_res, 0, 2), PQgetvalue(p_res, 0, 3), PQgetvalue(p_res, 0, 4), /* nlink */ PQgetvalue(p_res, 0, 5), /* ctime */ PQgetvalue(p_res, 0, 6) /* ftype */ ); PQclear(p_res); /* Build the path of the object */ if(p_path && p_objectname) { /* build the path of the Parent */ st = fsal_posixdb_buildOnePath(p_conn, p_parent_directory_handle, p_path); if(st.major != ERR_FSAL_POSIXDB_NOERR) { RollbackTransaction(p_conn, p_res); return st; } /* then concatenate the filename */ if(!(p_path->len + 1 + p_objectname->len < FSAL_MAX_PATH_LEN)) { RollbackTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_PATHTOOLONG, 0); } p_path->path[p_path->len] = '/'; strcpy(&p_path->path[p_path->len + 1], p_objectname->name); p_path->len += 1 + p_objectname->len; /* add the the path to cache */ fsal_posixdb_CachePath(p_handle, p_path); } else { /* update handle if it was in cache */ fsal_posixdb_UpdateInodeCache(p_handle); } EndTransaction(p_conn, p_res); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
/** * @brief Unlock the Handle line previously locked by fsal_posixdb_lockHandleForUpdate * * @param p_conn * Database connection * * @return ERR_FSAL_POSIXDB_NOERR if no error, * another error code else. */ fsal_posixdb_status_t fsal_posixdb_cancelHandleLock(fsal_posixdb_conn * p_conn /* IN */ ) { RollbackTransaction(p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_NOERR, 0); }
/** connection to database */ fsal_posixdb_status_t fsal_posixdb_connect(fsal_posixdb_conn_params_t * dbparams, fsal_posixdb_conn ** p_conn) { my_bool reconnect = 1; char password[1024] = ""; int rc; unsigned int port; /* read password from password file */ rc = ReadPasswordFromFile(dbparams->passwdfile, password); if(rc) ReturnCodeDB(ERR_FSAL_POSIXDB_CMDFAILED, rc); /* resolve the port number */ if(dbparams->port[0] != '\0') { if(!isdigit(dbparams->port[0])) { LogCrit(COMPONENT_FSAL, "Numerical value expected for database port number (invalid value: %s)", dbparams->port); ReturnCodeDB(ERR_FSAL_POSIXDB_CMDFAILED, 0); } port = atoi(dbparams->port); } else port = 0; *p_conn = gsh_malloc(sizeof(fsal_posixdb_conn)); if(*p_conn == NULL) { LogCrit(COMPONENT_FSAL, "ERROR: failed to allocate memory"); ReturnCodeDB(ERR_FSAL_POSIXDB_NO_MEM, errno); } /* Init client structure */ if(mysql_init(&(*p_conn)->db_conn) == NULL) { gsh_free(*p_conn); LogCrit(COMPONENT_FSAL, "ERROR: failed to create MySQL client struct"); ReturnCodeDB(ERR_FSAL_POSIXDB_BADCONN, errno); } #if ( MYSQL_VERSION_ID >= 50013 ) /* set auto-reconnect option */ mysql_options(&(*p_conn)->db_conn, MYSQL_OPT_RECONNECT, &reconnect); #else /* older version */ (*p_conn)->db_conn->reconnect = 1; #endif /* connect to server */ if(!mysql_real_connect(&(*p_conn)->db_conn, dbparams->host, dbparams->login, password, dbparams->dbname, port, NULL, 0)) { int rc; LogCrit(COMPONENT_FSAL, "Failed to connect to MySQL server: Error: %s", mysql_error(&(*p_conn)->db_conn)); rc = mysql_errno(&(*p_conn)->db_conn); gsh_free(*p_conn); ReturnCodeDB(ERR_FSAL_POSIXDB_BADCONN, rc); } /* Note [MySQL reference guide]: mysql_real_connect() incorrectly reset * the MYSQL_OPT_RECONNECT option to its default value before MySQL 5.1.6. * Therefore, prior to that version, if you want reconnect to be enabled for * each connection, you must call mysql_options() with the MYSQL_OPT_RECONNECT * option after each call to mysql_real_connect(). */ #if (MYSQL_VERSION_ID >= 50013) && (MYSQL_VERSION_ID < 50106) /* reset auto-reconnect option */ mysql_options(&(*p_conn)->db_conn, MYSQL_OPT_RECONNECT, &reconnect); #endif LogEvent(COMPONENT_FSAL, "Logged on to database sucessfully"); /* Create prepared statements */ return fsal_posixdb_initPreparedQueries(*p_conn); }