pktcdvd.c (cecdd52a3dd312564f81a39df08378b7b39a2654) pktcdvd.c (75a2d4226b53710380d1017b3f4c88f937ddba78)
1/*
2 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
3 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
4 * Copyright (C) 2006 Thomas Maier <balagi@justmail.de>
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License. See linux/COPYING for more information.
8 *

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338 device_map show mappings
339 *******************************************************************/
340
341static void class_pktcdvd_release(struct class *cls)
342{
343 kfree(cls);
344}
345
1/*
2 * Copyright (C) 2000 Jens Axboe <axboe@suse.de>
3 * Copyright (C) 2001-2004 Peter Osterlund <petero2@telia.com>
4 * Copyright (C) 2006 Thomas Maier <balagi@justmail.de>
5 *
6 * May be copied or modified under the terms of the GNU General Public
7 * License. See linux/COPYING for more information.
8 *

--- 329 unchanged lines hidden (view full) ---

338 device_map show mappings
339 *******************************************************************/
340
341static void class_pktcdvd_release(struct class *cls)
342{
343 kfree(cls);
344}
345
346static ssize_t device_map_show(struct class *c, struct class_attribute *attr,
346static ssize_t device_map_show(const struct class *c, const struct class_attribute *attr,
347 char *data)
348{
349 int n = 0;
350 int idx;
351 mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
352 for (idx = 0; idx < MAX_WRITERS; idx++) {
353 struct pktcdvd_device *pd = pkt_devs[idx];
354 if (!pd)

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359 MAJOR(pd->bdev->bd_dev),
360 MINOR(pd->bdev->bd_dev));
361 }
362 mutex_unlock(&ctl_mutex);
363 return n;
364}
365static CLASS_ATTR_RO(device_map);
366
347 char *data)
348{
349 int n = 0;
350 int idx;
351 mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
352 for (idx = 0; idx < MAX_WRITERS; idx++) {
353 struct pktcdvd_device *pd = pkt_devs[idx];
354 if (!pd)

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359 MAJOR(pd->bdev->bd_dev),
360 MINOR(pd->bdev->bd_dev));
361 }
362 mutex_unlock(&ctl_mutex);
363 return n;
364}
365static CLASS_ATTR_RO(device_map);
366
367static ssize_t add_store(struct class *c, struct class_attribute *attr,
367static ssize_t add_store(const struct class *c, const struct class_attribute *attr,
368 const char *buf, size_t count)
369{
370 unsigned int major, minor;
371
372 if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
373 /* pkt_setup_dev() expects caller to hold reference to self */
374 if (!try_module_get(THIS_MODULE))
375 return -ENODEV;

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380
381 return count;
382 }
383
384 return -EINVAL;
385}
386static CLASS_ATTR_WO(add);
387
368 const char *buf, size_t count)
369{
370 unsigned int major, minor;
371
372 if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
373 /* pkt_setup_dev() expects caller to hold reference to self */
374 if (!try_module_get(THIS_MODULE))
375 return -ENODEV;

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380
381 return count;
382 }
383
384 return -EINVAL;
385}
386static CLASS_ATTR_WO(add);
387
388static ssize_t remove_store(struct class *c, struct class_attribute *attr,
388static ssize_t remove_store(const struct class *c, const struct class_attribute *attr,
389 const char *buf, size_t count)
390{
391 unsigned int major, minor;
392 if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
393 pkt_remove_dev(MKDEV(major, minor));
394 return count;
395 }
396 return -EINVAL;

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412 /*
413 * create control files in sysfs
414 * /sys/class/pktcdvd/...
415 */
416 class_pktcdvd = kzalloc(sizeof(*class_pktcdvd), GFP_KERNEL);
417 if (!class_pktcdvd)
418 return -ENOMEM;
419 class_pktcdvd->name = DRIVER_NAME;
389 const char *buf, size_t count)
390{
391 unsigned int major, minor;
392 if (sscanf(buf, "%u:%u", &major, &minor) == 2) {
393 pkt_remove_dev(MKDEV(major, minor));
394 return count;
395 }
396 return -EINVAL;

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412 /*
413 * create control files in sysfs
414 * /sys/class/pktcdvd/...
415 */
416 class_pktcdvd = kzalloc(sizeof(*class_pktcdvd), GFP_KERNEL);
417 if (!class_pktcdvd)
418 return -ENOMEM;
419 class_pktcdvd->name = DRIVER_NAME;
420 class_pktcdvd->owner = THIS_MODULE;
421 class_pktcdvd->class_release = class_pktcdvd_release;
422 class_pktcdvd->class_groups = class_pktcdvd_groups;
423 ret = class_register(class_pktcdvd);
424 if (ret) {
425 kfree(class_pktcdvd);
426 class_pktcdvd = NULL;
427 pr_err("failed to create class pktcdvd\n");
428 return ret;

--- 2518 unchanged lines hidden --- 		420 class_pktcdvd->class_release = class_pktcdvd_release;
421 class_pktcdvd->class_groups = class_pktcdvd_groups;
422 ret = class_register(class_pktcdvd);
423 if (ret) {
424 kfree(class_pktcdvd);
425 class_pktcdvd = NULL;
426 pr_err("failed to create class pktcdvd\n");
427 return ret;

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