X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udevdb.c;h=ec67a079627df09cec9cdf5a1733d99e87139051;hp=e4330f532029f8be4ed629e51b6e16e6026c57b9;hb=53dc383ee90b6699b85f2843247389f5adeb8d50;hpb=a9ce0a410e7ef573f2f1f48ea793829d3cec389f

diff --git a/udevdb.c b/udevdb.c
index e4330f532..ec67a0796 100644
--- a/udevdb.c
+++ b/udevdb.c
@@ -41,212 +41,58 @@
 
 static TDB_CONTEXT *udevdb;
 
-struct sysfsdb_record {
-	char name[PATH_SIZE];
-};
 
-/**
- * namedb_record - device name is key, remaining udevice info stored here.
- */
-struct namedb_record {
-	char sysfs_dev_path[PATH_SIZE];
-	char class_dev_name[NAME_SIZE];
-	char class_name[NAME_SIZE];
-	char id[ID_SIZE];
-	char type;
-	int major;
-	int minor;
-	mode_t mode;
-};
-
-/**
- * udevdb_close: close udev database
- */
-static void udevdb_close(void)
-{
-	if (udevdb != NULL) {
-		tdb_close(udevdb);
-		udevdb = NULL;
-	}
-}
-
-/**
- * udevdb_open: opens udev's database
- * @method: database can either be in memory - UDEVDB_INTERNAL - or
- * 	written to a file with UDEVDB_DEFAULT.
- */
-static int udevdb_open(int method)
-{
-	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;
-	}
-	return 0;
-}
-
-static struct sysfsdb_record *sysfsdb_fetch(const char *path)
+int udevdb_add_dev(const char *path, const struct udevice *dev)
 {
 	TDB_DATA key, data;
-	char keystr[PATH_SIZE+2]; 
-	struct sysfsdb_record *rec = NULL;
+	char keystr[SYSFS_PATH_MAX];
 
-	if (strlen(path) >= PATH_SIZE)
-		return NULL;
+	if ((path == NULL) || (dev == NULL))
+		return -ENODEV;
 
-	memset(keystr, 0, sizeof(keystr));
+	memset(keystr, 0, NAME_SIZE);
 	strcpy(keystr, path);
-
-	dbg("keystr = %s", keystr);
-
-	key.dptr = (void *)keystr;
+	key.dptr = keystr;
 	key.dsize = strlen(keystr) + 1;
-
-	data = tdb_fetch(udevdb, key);
-	if (data.dptr == NULL || data.dsize == 0) {
-		dbg("tdb_fetch did not work :(");
-		return NULL;
-	}
 	
-	rec = (struct sysfsdb_record *)malloc(sizeof(struct sysfsdb_record));
-	if (rec == NULL) {
-		free(data.dptr);
-		return NULL;
-	}
+	data.dptr = (void *)dev;
+	data.dsize = sizeof(*dev);
 	
-	memcpy(rec, data.dptr, sizeof(struct sysfsdb_record));
-	free(data.dptr);
-
-	return rec;
+	return tdb_store(udevdb, key, data, TDB_REPLACE); 
 }
 
-/**
- * namedb_fetch
- */
-static struct namedb_record *namedb_fetch(const char *name)
+struct udevice *udevdb_get_dev(const char *path)
 {
 	TDB_DATA key, data;
-	char nm_keystr[NAME_SIZE]; 
-	struct namedb_record *nrec = NULL;
+	struct udevice *dev;
 
-	if (name == NULL)
-		return NULL; 
-	if (strlen(name) >= NAME_SIZE)
+	if (path == NULL)
 		return NULL;
 
-	memset(nm_keystr, 0, NAME_SIZE);
-	strcpy(nm_keystr, name);
-
-	key.dptr = (void *)nm_keystr;
-	key.dsize = strlen(nm_keystr) + 1;
+	key.dptr = (void *)path;
+	key.dsize = strlen(path) + 1;
 
 	data = tdb_fetch(udevdb, key);
 	if (data.dptr == NULL || data.dsize == 0)
 		return NULL;
 
-	nrec = (struct namedb_record *)malloc(sizeof(struct namedb_record));
-	if (nrec == NULL) {
-		free(data.dptr);
-		return NULL;
-	}
-	
-	memcpy(nrec, data.dptr, sizeof(struct namedb_record));
-	free(data.dptr);
-
-	return nrec;
-}
-
-static int sysfs_store(const char *path, const struct udevice *dev)
-{
-	TDB_DATA key, data;
-	char keystr[PATH_SIZE+2];
-	struct sysfsdb_record rec;
-	int retval = 0;
-
+	dev = malloc(sizeof(*dev));
 	if (dev == NULL)
-		return -ENODEV;
-
-	memset(keystr, 0, sizeof(keystr));
-	strcpy(keystr, path);
-
-	key.dptr = (void *)keystr;
-	key.dsize = strlen(keystr) + 1;
-	
-	strcpy(rec.name, dev->name);
-
-	data.dptr = (void *) &rec;
-	data.dsize = sizeof(rec);
+		goto exit;
 	
-	retval = tdb_store(udevdb, key, data, TDB_REPLACE); 
-	return retval;
-}
-
-/**
- * namedb_store
- */
-static int namedb_store(const struct udevice *dev)
-{
-	TDB_DATA key, data;
-	char keystr[NAME_SIZE];
-	struct namedb_record rec;
-	int retval = 0;
-
-	if (dev == NULL)
-		return -1;
-
-	memset(keystr, 0, NAME_SIZE);
-	strcpy(keystr, dev->name);
-
-	key.dptr = (void *)keystr;
-	key.dsize = strlen(keystr) + 1;
-	
-	strcpy(rec.sysfs_dev_path, dev->sysfs_dev_path);
-	strcpy(rec.id, dev->bus_id);
-	strcpy(rec.class_dev_name, dev->class_dev_name);
-	strcpy(rec.class_name, dev->class_name);
-	rec.type = dev->type;
-	rec.major = dev->major;
-	rec.minor = dev->minor;
-	rec.mode = dev->mode;
-
-	data.dptr = (void *) &rec;
-	data.dsize = sizeof(rec);
-	
-	retval = tdb_store(udevdb, key, data, TDB_REPLACE); 
-	return retval;
+	memcpy(dev, data.dptr, sizeof(*dev));
+exit:
+	free(data.dptr);
+	return dev;
 }
 
-/**
- * namedb_delete
- */
-static int namedb_delete(const char *name)
+int udevdb_delete_dev(const char *path)
 {
 	TDB_DATA key;
-	char keystr[NAME_SIZE]; 
-	int retval = 0;
-
-	if (name == NULL)
-		return -1; 
-	if (strlen(name) >= NAME_SIZE)
-		return -1;
-
-	memset(keystr, 0, NAME_SIZE);
-	strcpy(keystr, name);
-
-	key.dptr = (void *)keystr;
-	key.dsize = strlen(keystr) + 1;
-
-	retval = tdb_delete(udevdb, key);
-	return retval;
-}
+	char keystr[SYSFS_PATH_MAX];
 
-static int sysfs_delete(const char *path)
-{
-	TDB_DATA key;
-	char keystr[PATH_SIZE];
+	if (path == NULL)
+		return -EINVAL;
 
 	memset(keystr, 0, sizeof(keystr));
 	strcpy(keystr, path);
@@ -257,135 +103,34 @@ static int sysfs_delete(const char *path)
 	return tdb_delete(udevdb, key);
 }
 
-/**
- * udevdb_delete_udevice
- */
-int udevdb_delete_udevice(const char *name)
-{
-	struct namedb_record *nrec = NULL;
-
-	if (name == NULL)
-		return -1; 
-
-	nrec = namedb_fetch(name);
-	if (nrec == NULL)
-		return -1;
-
-	namedb_delete(name);
-	free(nrec);
-
-	return 0;
-}
-
-/**
- * udevdb_add_device: adds class device to database
- */
-int udevdb_add_device(const char *device, const struct sysfs_class_device *class_dev, const char *name, char type, int major, int minor, int mode)
-{
-	struct udevice dbdev;
-
-	if (class_dev == NULL)
-		return -ENODEV;
-
-	memset(&dbdev, 0, sizeof(dbdev));
-	strncpy(dbdev.name, name, NAME_SIZE);
-	if (class_dev->sysdevice) {
-		strncpy(dbdev.sysfs_dev_path, class_dev->sysdevice->directory->path, PATH_SIZE);
-		strncpy(dbdev.bus_id, class_dev->sysdevice->bus_id, ID_SIZE);
-	}
-	strncpy(dbdev.class_dev_name, class_dev->name, NAME_SIZE);
-//	if ((sysfs_get_name_from_path(subsystem, dbdev.class_name, NAME_SIZE)) != 0)
-//		strcpy(dbdev.class_name, "unknown");
-	dbdev.type = type;
-	dbdev.major = major;
-	dbdev.minor = minor;
-	dbdev.mode = mode;
-	
-	if ((sysfs_store(device, &dbdev)) != 0)
-		return -1;
-//	if ((namedb_store(&dbdev)) != 0)
-//		return -1;
-
-	return 0;
-}
-
-/**
- * udevdb_get_device: grab's device by name
- */
-struct udevice *udevdb_get_udevice(const char *name)
-{
-	struct namedb_record *nrec = NULL;
-	struct udevice *dev = NULL;
-
-	if (name == NULL)
-		return NULL; 
-
-	nrec = namedb_fetch(name);
-	if (nrec == NULL)
-		return NULL;
-
-	dev = (struct udevice *)malloc(sizeof(struct udevice));
-	if (dev == NULL) {
-		free(nrec);
-		return NULL;
-	}
-
-	strcpy(dev->name, name);
-	strcpy(dev->sysfs_dev_path, nrec->sysfs_dev_path);
-	strcpy(dev->class_dev_name, nrec->class_dev_name);
-	strcpy(dev->class_name, nrec->class_name);
-	strcpy(dev->bus_id, nrec->id);
-	dev->type = nrec->type;
-	dev->major = nrec->major;
-	dev->minor = nrec->minor;
-	dev->mode = nrec->mode;
-
-	free(nrec);
-
-	return dev;
-}
-
-int udevdb_get_dev(const char *path, char *name, size_t name_size)
-{
-	struct sysfsdb_record *rec = NULL;
-
-	if ((path == NULL) || (name == NULL) || (name_size < 1))
-		return -EINVAL;
-
-	rec = sysfsdb_fetch(path);
-	if (rec == NULL)
-		return -ENODEV;
-
-	if (strlen(rec->name) >= name_size)
-		return -EINVAL;
-
-	strncpy(name, rec->name, name_size);
-	return 0;
-}
-
-int udevdb_delete_dev(const char *path)
-{
-	if (path == NULL)
-		return -EINVAL;
-
-	return sysfs_delete(path);
-}
-
 /**
  * udevdb_exit: closes database
  */
 void udevdb_exit(void)
 {
-	udevdb_close();
+	if (udevdb != NULL) {
+		tdb_close(udevdb);
+		udevdb = NULL;
+	}
 }
 
 /**
  * udevdb_init: initializes database
+ * @init_flag: database can either be in memory - UDEVDB_INTERNAL - or
+ *	written to a file with UDEVDB_DEFAULT.
  */
 int udevdb_init(int init_flag)
 {
 	if (init_flag != UDEVDB_DEFAULT && init_flag != UDEVDB_INTERNAL)
-		return -1;
+		return -EINVAL;
 
-	return udevdb_open(init_flag);
+	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");
+		else
+			dbg("Unable to initialize database at %s", udev_db_filename);
+		return -EINVAL;
+	}
+	return 0;
 }