Line data    Source code

       1             : /* SPDX-License-Identifier: LGPL-2.1+ */
       2             : #ifndef foosdhwdbhfoo
       3             : #define foosdhwdbhfoo
       4             : 
       5             : /***
       6             :   systemd is free software; you can redistribute it and/or modify it
       7             :   under the terms of the GNU Lesser General Public License as published by
       8             :   the Free Software Foundation; either version 2.1 of the License, or
       9             :   (at your option) any later version.
      10             : 
      11             :   systemd is distributed in the hope that it will be useful, but
      12             :   WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
      14             :   Lesser General Public License for more details.
      15             : 
      16             :   You should have received a copy of the GNU Lesser General Public License
      17             :   along with systemd; If not, see <http://www.gnu.org/licenses/>.
      18             : ***/
      19             : 
      20             : #include "_sd-common.h"
      21             : 
      22             : _SD_BEGIN_DECLARATIONS;
      23             : 
      24             : typedef struct sd_hwdb sd_hwdb;
      25             : 
      26             : sd_hwdb *sd_hwdb_ref(sd_hwdb *hwdb);
      27             : sd_hwdb *sd_hwdb_unref(sd_hwdb *hwdb);
      28             : 
      29             : int sd_hwdb_new(sd_hwdb **ret);
      30             : 
      31             : int sd_hwdb_get(sd_hwdb *hwdb, const char *modalias, const char *key, const char **value);
      32             : 
      33             : int sd_hwdb_seek(sd_hwdb *hwdb, const char *modalias);
      34             : int sd_hwdb_enumerate(sd_hwdb *hwdb, const char **key, const char **value);
      35             : 
      36             : /* the inverse condition avoids ambiguity of dangling 'else' after the macro */
      37             : #define SD_HWDB_FOREACH_PROPERTY(hwdb, modalias, key, value)            \
      38             :         if (sd_hwdb_seek(hwdb, modalias) < 0) { }                       \
      39             :         else while (sd_hwdb_enumerate(hwdb, &(key), &(value)) > 0)
      40             : 
      41           5 : _SD_DEFINE_POINTER_CLEANUP_FUNC(sd_hwdb, sd_hwdb_unref);
      42             : 
      43             : _SD_END_DECLARATIONS;
      44             : 
      45             : #endif