+/*
+ * udevdb.c
+ *
+ * Userspace devfs
+ *
+ * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
+ * Copyright (C) 2003 IBM Corp.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
/*
* udev database library
*/
#include <errno.h>
#include <signal.h>
+#include "udev_version.h"
+#include "udev.h"
+#include "namedev.h"
#include "udevdb.h"
#include "tdb/tdb.h"
-static TDB_CONTEXT *busdb;
-static TDB_CONTEXT *classdb;
-static TDB_CONTEXT *namedb;
+static TDB_CONTEXT *udevdb;
/**
* busdb_record - bus and id are keys to look up name of device
};
/**
- * busdb_close: close busdb database
+ * udevdb_close: close udev database
*/
-static void busdb_close(void)
+static void udevdb_close(void)
{
- if (busdb != NULL) {
- tdb_close(busdb);
- busdb = NULL;
+ if (udevdb != NULL) {
+ tdb_close(udevdb);
+ udevdb = NULL;
}
}
/**
- * classdb_close: close classdb database
+ * udevdb_open: opens udev's database
+ * @method: database can either be in memory - UDEVDB_INTERNAL - or
+ * written to a file with UDEVDB_DEFAULT.
*/
-static void classdb_close(void)
+static int udevdb_open(int method)
{
- if (classdb != NULL) {
- tdb_close(classdb);
- classdb = NULL;
+ udevdb = tdb_open(UDEV_CONFIG_DIR UDEV_DB, 0, method, O_RDWR | O_CREAT, 0644);
+ if (udevdb == NULL) {
+ if (method == UDEVDB_INTERNAL)
+ dbg("Unable to initialize in-memory database");
+ else
+ dbg("Unable to initialize database at %s", UDEV_CONFIG_DIR UDEV_DB);
+ return -EINVAL;
}
-}
-
-/**
- * namedb_close: close name database
- */
-static void namedb_close(void)
-{
- if (namedb != NULL) {
- tdb_close(namedb);
- namedb = NULL;
- }
-}
-
-/**
- * busdb_open: open busdb's database
- */
-static int busdb_open(void)
-{
- busdb = tdb_open(BUS_DB, 0, 0, O_RDWR | O_CREAT, 0644);
- if (busdb == NULL)
- return -1;
- return 0;
-}
-
-/**
- * classdb_open: open classdb's database
- */
-static int classdb_open(void)
-{
- classdb = tdb_open(CLASS_DB, 0, 0, O_RDWR | O_CREAT, 0644);
- if (classdb == NULL)
- return -1;
- return 0;
-}
-
-/**
- * namedb_open: open name database
- */
-static int namedb_open(void)
-{
- namedb = tdb_open(NAME_DB, 0, 0, O_RDWR | O_CREAT, 0644);
- if (namedb == NULL)
- return -1;
return 0;
}
if (strlen(bus) >= BUS_SIZE || strlen(id) >= ID_SIZE)
return NULL;
- if ((busdb_open()) != 0)
- return NULL;
-
memset(keystr, 0, (BUS_SIZE+ID_SIZE+2));
strcpy(keystr, bus);
strcat(keystr, UDEVDB_DEL);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
- data = tdb_fetch(busdb, key);
- busdb_close();
+ data = tdb_fetch(udevdb, key);
if (data.dptr == NULL || data.dsize == 0)
return NULL;
if (strlen(cls) >= NAME_SIZE || strlen(cls_dev) >= NAME_SIZE)
return NULL;
- if ((classdb_open()) != 0)
- return NULL;
-
memset(keystr, 0, (NAME_SIZE+NAME_SIZE+2));
strcpy(keystr, cls);
strcat(keystr, UDEVDB_DEL);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
- data = tdb_fetch(classdb, key);
- classdb_close();
+ data = tdb_fetch(udevdb, key);
if (data.dptr == NULL || data.dsize == 0)
return NULL;
if (strlen(name) >= NAME_SIZE)
return NULL;
- if ((namedb_open()) != 0)
- return NULL;
-
memset(nm_keystr, 0, NAME_SIZE);
strcpy(nm_keystr, name);
key.dptr = (void *)nm_keystr;
key.dsize = strlen(nm_keystr) + 1;
- data = tdb_fetch(namedb, key);
- namedb_close();
-
+ data = tdb_fetch(udevdb, key);
if (data.dptr == NULL || data.dsize == 0)
return NULL;
if (dev == NULL)
return -1;
- if ((retval = busdb_open()) != 0)
- return -1;
-
memset(keystr, 0, (BUS_SIZE+ID_SIZE+2));
strcpy(keystr, dev->bus_name);
strcat(keystr, UDEVDB_DEL);
data.dptr = (void *) &rec;
data.dsize = sizeof(rec);
- retval = tdb_store(busdb, key, data, TDB_REPLACE);
-
- busdb_close();
+ retval = tdb_store(udevdb, key, data, TDB_REPLACE);
return retval;
}
if (dev == NULL)
return -1;
- if ((retval = classdb_open()) != 0)
- return -1;
-
memset(keystr, 0, (NAME_SIZE+NAME_SIZE+2));
strcpy(keystr, dev->class_name);
strcat(keystr, UDEVDB_DEL);
data.dptr = (void *) &rec;
data.dsize = sizeof(rec);
- retval = tdb_store(classdb, key, data, TDB_REPLACE);
-
- classdb_close();
+ retval = tdb_store(udevdb, key, data, TDB_REPLACE);
return retval;
}
if (dev == NULL)
return -1;
- if ((retval = namedb_open()) != 0)
- return -1;
-
memset(keystr, 0, NAME_SIZE);
strcpy(keystr, dev->name);
data.dptr = (void *) &rec;
data.dsize = sizeof(rec);
- retval = tdb_store(namedb, key, data, TDB_REPLACE);
-
- namedb_close();
+ retval = tdb_store(udevdb, key, data, TDB_REPLACE);
return retval;
}
if (strlen(bus) >= BUS_SIZE || strlen(id) >= ID_SIZE)
return -1;
- if ((busdb_open()) != 0)
- return -1;
-
memset(keystr, 0, (BUS_SIZE+ID_SIZE+2));
strcpy(keystr, bus);
strcat(keystr, UDEVDB_DEL);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
- retval = tdb_delete(busdb, key);
- busdb_close();
-
+ retval = tdb_delete(udevdb, key);
return retval;
}
if (strlen(cls) >= NAME_SIZE || strlen(cls_dev) >= NAME_SIZE)
return -1;
- if ((classdb_open()) != 0)
- return -1;
-
memset(keystr, 0, (NAME_SIZE+NAME_SIZE+2));
strcpy(keystr, cls);
strcat(keystr, UDEVDB_DEL);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
- retval = tdb_delete(classdb, key);
- classdb_close();
-
+ retval = tdb_delete(udevdb, key);
return retval;
}
if (strlen(name) >= NAME_SIZE)
return -1;
- if ((namedb_open()) != 0)
- return -1;
-
memset(keystr, 0, NAME_SIZE);
strcpy(keystr, name);
key.dptr = (void *)keystr;
key.dsize = strlen(keystr) + 1;
- retval = tdb_delete(namedb, key);
- namedb_close();
-
- return retval;
-}
-
-/**
- * namedb_exists
- */
-static int namedb_exists(const char *name)
-{
- TDB_DATA key;
- char keystr[NAME_SIZE];
- int retval = 0;
-
- if (name == NULL)
- return retval;
- if (strlen(name) >= NAME_SIZE)
- return retval;
-
- if ((namedb_open()) != 0)
- return retval;
-
- memset(keystr, 0, NAME_SIZE);
- strcpy(keystr, name);
-
- key.dptr = (void *)keystr;
- key.dsize = strlen(keystr) + 1;
-
- retval = tdb_exists(namedb, key);
- namedb_close();
-
+ retval = tdb_delete(udevdb, key);
return retval;
}
return dev;
}
+
+/**
+ * udevdb_exit: closes database
+ */
+void udevdb_exit(void)
+{
+ udevdb_close();
+}
+
+/**
+ * udevdb_init: initializes database
+ */
+int udevdb_init(int init_flag)
+{
+ if (init_flag != UDEVDB_DEFAULT && init_flag != UDEVDB_INTERNAL)
+ return -1;
+
+ return udevdb_open(init_flag);
+}
~ianmdlvl / elogind.git / blobdiff