3  * linux/drivers/char/raw.c
5  * Front-end raw character devices.  These can be bound to any block
6  * devices to provide genuine Unix raw character device semantics.
18 #include <linux/raw.h>
44 MODULE_PARM_DESC(max_raw_minors, "Maximum number of raw devices (1-65536)");
47  * Open/close code for raw IO.
49  * We just rewrite the i_mapping for the /dev/raw/rawN file descriptor to
68 		"process %s (pid %d) is using the deprecated raw device\n"  in raw_open()
139 	dev_t raw = MKDEV(RAW_MAJOR, number);  in bind_set()  local
161 	 * the raw device is opened.  Just check that the  in bind_set()
179 		device_destroy(raw_class, raw);  in bind_set()
182 		device_destroy(raw_class, raw);  in bind_set()
183 		device_create(raw_class, NULL, raw, NULL, "raw%d", number);  in bind_set()
198  * Deal with ioctls against the raw-device control interface, to bind
199  * and unbind other raw devices.
303 	return kasprintf(GFP_KERNEL, "raw/%s", dev_name(dev));  in raw_devnode()
312 		pr_warn("raw: invalid max_raw_minors (must be between 1 and 65536), using %d\n",  in raw_init()
320 		printk(KERN_ERR "Not enough memory for raw device structures\n");  in raw_init()
325 	ret = register_chrdev_region(dev, max_raw_minors, "raw");  in raw_init()
333 	raw_class = class_create(THIS_MODULE, "raw");  in raw_init()
335 		printk(KERN_ERR "Error creating raw class.\n");  in raw_init()