/*
* udev database library
*/
+#define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
strcpy(keystr, path);
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
-
+
data.dptr = (void *)dev;
data.dsize = sizeof(*dev);
return tdb_store(udevdb, key, data, TDB_REPLACE);
}
-struct udevice *udevdb_get_dev(const char *path)
+int udevdb_get_dev(const char *path, struct udevice *dev)
{
TDB_DATA key, data;
- struct udevice *dev;
if (path == NULL)
- return NULL;
+ return -ENODEV;
key.dptr = (void *)path;
key.dsize = strlen(path) + 1;
data = tdb_fetch(udevdb, key);
if (data.dptr == NULL || data.dsize == 0)
- return NULL;
+ return -ENODEV;
- dev = malloc(sizeof(*dev));
- if (dev == NULL)
- goto exit;
-
memcpy(dev, data.dptr, sizeof(*dev));
-exit:
- free(data.dptr);
- return dev;
+ return 0;
}
int udevdb_delete_dev(const char *path)
key.dptr = keystr;
key.dsize = strlen(keystr) + 1;
-
+
return tdb_delete(udevdb, key);
}
/**
* udevdb_init: initializes database
- * @init_flag: database can either be in memory - UDEVDB_INTERNAL - or
- * written to a file with UDEVDB_DEFAULT.
+ * @init_flag: UDEVDB_INTERNAL - database stays in memory
+ * UDEVDB_DEFAULT - database is written to a file
*/
int udevdb_init(int init_flag)
{
if (init_flag != UDEVDB_DEFAULT && init_flag != UDEVDB_INTERNAL)
return -EINVAL;
- udevdb = tdb_open(UDEV_CONFIG_DIR UDEV_DB, 0, init_flag, O_RDWR | O_CREAT, 0644);
+ udevdb = tdb_open(udev_db_filename, 0, init_flag, O_RDWR | O_CREAT, 0644);
if (udevdb == NULL) {
if (init_flag == UDEVDB_INTERNAL)
- dbg("Unable to initialize in-memory database");
+ dbg("unable to initialize in-memory database");
else
- dbg("Unable to initialize database at %s", UDEV_CONFIG_DIR UDEV_DB);
+ dbg("unable to initialize database at '%s'", udev_db_filename);
+ return -EINVAL;
+ }
+ return 0;
+}
+
+/**
+ * udevdb_open_ro: open database for reading
+ */
+int udevdb_open_ro(void)
+{
+ udevdb = tdb_open(udev_db_filename, 0, 0, O_RDONLY, 0);
+ if (udevdb == NULL) {
+ dbg("unable to open database at '%s'", udev_db_filename);
return -EINVAL;
}
return 0;