6 * Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (C) 2003 IBM Corp.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation version 2 of the License.
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 675 Mass Ave, Cambridge, MA 02139, USA.
25 * udev database library
27 #define _KLIBC_HAS_ARCH_SIG_ATOMIC_T
36 #include "udev_version.h"
41 #include "libsysfs/libsysfs.h"
43 static TDB_CONTEXT *udevdb;
46 int udevdb_add_dev(const char *path, const struct udevice *dev)
49 char keystr[SYSFS_PATH_MAX];
51 if ((path == NULL) || (dev == NULL))
54 memset(keystr, 0, NAME_SIZE);
57 key.dsize = strlen(keystr) + 1;
59 data.dptr = (void *)dev;
60 data.dsize = sizeof(*dev);
62 return tdb_store(udevdb, key, data, TDB_REPLACE);
65 struct udevice *udevdb_get_dev(const char *path)
73 key.dptr = (void *)path;
74 key.dsize = strlen(path) + 1;
76 data = tdb_fetch(udevdb, key);
77 if (data.dptr == NULL || data.dsize == 0)
80 dev = malloc(sizeof(*dev));
84 memcpy(dev, data.dptr, sizeof(*dev));
90 int udevdb_delete_dev(const char *path)
93 char keystr[SYSFS_PATH_MAX];
98 memset(keystr, 0, sizeof(keystr));
102 key.dsize = strlen(keystr) + 1;
104 return tdb_delete(udevdb, key);
108 * udevdb_exit: closes database
110 void udevdb_exit(void)
112 if (udevdb != NULL) {
119 * udevdb_init: initializes database
120 * @init_flag: UDEVDB_INTERNAL - database stays in memory
121 * UDEVDB_DEFAULT - database is written to a file
123 int udevdb_init(int init_flag)
125 if (init_flag != UDEVDB_DEFAULT && init_flag != UDEVDB_INTERNAL)
128 udevdb = tdb_open(udev_db_filename, 0, init_flag, O_RDWR | O_CREAT, 0644);
129 if (udevdb == NULL) {
130 if (init_flag == UDEVDB_INTERNAL)
131 dbg("unable to initialize in-memory database");
133 dbg("unable to initialize database at '%s'", udev_db_filename);