kobject.c (1758047057dbe329be712a31b79db7151b5871f8) kobject.c (ee6d3dd4ed48ab24b74bab3c3977b8218518247d)
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * kobject.c - library routines for handling generic kernel objects
4 *
5 * Copyright (c) 2002-2003 Patrick Mochel <mochel@osdl.org>
6 * Copyright (c) 2006-2007 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (c) 2006-2007 Novell Inc.
8 *

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60 *
61 * Most subsystems have a set of default attributes that are associated
62 * with an object that registers with them. This is a helper called during
63 * object registration that loops through the default attributes of the
64 * subsystem and creates attributes files for them in sysfs.
65 */
66static int populate_dir(struct kobject *kobj)
67{
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * kobject.c - library routines for handling generic kernel objects
4 *
5 * Copyright (c) 2002-2003 Patrick Mochel <mochel@osdl.org>
6 * Copyright (c) 2006-2007 Greg Kroah-Hartman <greg@kroah.com>
7 * Copyright (c) 2006-2007 Novell Inc.
8 *

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60 *
61 * Most subsystems have a set of default attributes that are associated
62 * with an object that registers with them. This is a helper called during
63 * object registration that loops through the default attributes of the
64 * subsystem and creates attributes files for them in sysfs.
65 */
66static int populate_dir(struct kobject *kobj)
67{
68 struct kobj_type *t = get_ktype(kobj);
68 const struct kobj_type *t = get_ktype(kobj);
69 struct attribute *attr;
70 int error = 0;
71 int i;
72
73 if (t && t->default_attrs) {
74 for (i = 0; (attr = t->default_attrs[i]) != NULL; i++) {
75 error = sysfs_create_file(kobj, attr);
76 if (error)

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341 *
342 * This function will properly initialize a kobject such that it can then
343 * be passed to the kobject_add() call.
344 *
345 * After this function is called, the kobject MUST be cleaned up by a call
346 * to kobject_put(), not by a call to kfree directly to ensure that all of
347 * the memory is cleaned up properly.
348 */
69 struct attribute *attr;
70 int error = 0;
71 int i;
72
73 if (t && t->default_attrs) {
74 for (i = 0; (attr = t->default_attrs[i]) != NULL; i++) {
75 error = sysfs_create_file(kobj, attr);
76 if (error)

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341 *
342 * This function will properly initialize a kobject such that it can then
343 * be passed to the kobject_add() call.
344 *
345 * After this function is called, the kobject MUST be cleaned up by a call
346 * to kobject_put(), not by a call to kfree directly to ensure that all of
347 * the memory is cleaned up properly.
348 */
349void kobject_init(struct kobject *kobj, struct kobj_type *ktype)
349void kobject_init(struct kobject *kobj, const struct kobj_type *ktype)
350{
351 char *err_str;
352
353 if (!kobj) {
354 err_str = "invalid kobject pointer!";
355 goto error;
356 }
357 if (!ktype) {

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456 *
457 * This function combines the call to kobject_init() and kobject_add().
458 *
459 * If this function returns an error, kobject_put() must be called to
460 * properly clean up the memory associated with the object. This is the
461 * same type of error handling after a call to kobject_add() and kobject
462 * lifetime rules are the same here.
463 */
350{
351 char *err_str;
352
353 if (!kobj) {
354 err_str = "invalid kobject pointer!";
355 goto error;
356 }
357 if (!ktype) {

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456 *
457 * This function combines the call to kobject_init() and kobject_add().
458 *
459 * If this function returns an error, kobject_put() must be called to
460 * properly clean up the memory associated with the object. This is the
461 * same type of error handling after a call to kobject_add() and kobject
462 * lifetime rules are the same here.
463 */
464int kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype,
464int kobject_init_and_add(struct kobject *kobj, const struct kobj_type *ktype,
465 struct kobject *parent, const char *fmt, ...)
466{
467 va_list args;
468 int retval;
469
470 kobject_init(kobj, ktype);
471
472 va_start(args, fmt);

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674
675/*
676 * kobject_cleanup - free kobject resources.
677 * @kobj: object to cleanup
678 */
679static void kobject_cleanup(struct kobject *kobj)
680{
681 struct kobject *parent = kobj->parent;
465 struct kobject *parent, const char *fmt, ...)
466{
467 va_list args;
468 int retval;
469
470 kobject_init(kobj, ktype);
471
472 va_start(args, fmt);

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674
675/*
676 * kobject_cleanup - free kobject resources.
677 * @kobj: object to cleanup
678 */
679static void kobject_cleanup(struct kobject *kobj)
680{
681 struct kobject *parent = kobj->parent;
682 struct kobj_type *t = get_ktype(kobj);
682 const struct kobj_type *t = get_ktype(kobj);
683 const char *name = kobj->name;
684
685 pr_debug("kobject: '%s' (%p): %s, parent %p\n",
686 kobject_name(kobj), kobj, __func__, kobj->parent);
687
688 if (t && !t->release)
689 pr_debug("kobject: '%s' (%p): does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.\n",
690 kobject_name(kobj), kobj);

--- 453 unchanged lines hidden --- 		683 const char *name = kobj->name;
684
685 pr_debug("kobject: '%s' (%p): %s, parent %p\n",
686 kobject_name(kobj), kobj, __func__, kobj->parent);
687
688 if (t && !t->release)
689 pr_debug("kobject: '%s' (%p): does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.\n",
690 kobject_name(kobj), kobj);

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