diff options
Diffstat (limited to 'lib/kobject.c')
| -rw-r--r-- | lib/kobject.c | 139 |
1 files changed, 64 insertions, 75 deletions
diff --git a/lib/kobject.c b/lib/kobject.c index 8dc3245..1d63ead 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -18,58 +18,57 @@ #include <linux/stat.h> #include <linux/slab.h> -/** - * populate_dir - populate directory with attributes. - * @kobj: object we're working on. - * - * Most subsystems have a set of default attributes that - * are associated with an object that registers with them. - * This is a helper called during object registration that - * loops through the default attributes of the subsystem - * and creates attributes files for them in sysfs. +/* + * populate_dir - populate directory with attributes. + * @kobj: object we're working on. * + * Most subsystems have a set of default attributes that are associated + * with an object that registers with them. This is a helper called during + * object registration that loops through the default attributes of the + * subsystem and creates attributes files for them in sysfs. */ - -static int populate_dir(struct kobject * kobj) +static int populate_dir(struct kobject *kobj) { - struct kobj_type * t = get_ktype(kobj); - struct attribute * attr; + struct kobj_type *t = get_ktype(kobj); + struct attribute *attr; int error = 0; int i; - + if (t && t->default_attrs) { for (i = 0; (attr = t->default_attrs[i]) != NULL; i++) { - if ((error = sysfs_create_file(kobj,attr))) + error = sysfs_create_file(kobj, attr); + if (error) break; } } return error; } -static int create_dir(struct kobject * kobj) +static int create_dir(struct kobject *kobj) { int error = 0; if (kobject_name(kobj)) { error = sysfs_create_dir(kobj); if (!error) { - if ((error = populate_dir(kobj))) + error = populate_dir(kobj); + if (error) sysfs_remove_dir(kobj); } } return error; } -static inline struct kobject * to_kobj(struct list_head * entry) +static inline struct kobject *to_kobj(struct list_head *entry) { - return container_of(entry,struct kobject,entry); + return container_of(entry, struct kobject, entry); } static int get_kobj_path_length(struct kobject *kobj) { int length = 1; - struct kobject * parent = kobj; + struct kobject *parent = kobj; - /* walk up the ancestors until we hit the one pointing to the + /* walk up the ancestors until we hit the one pointing to the * root. * Add 1 to strlen for leading '/' of each level. */ @@ -84,19 +83,19 @@ static int get_kobj_path_length(struct kobject *kobj) static void fill_kobj_path(struct kobject *kobj, char *path, int length) { - struct kobject * parent; + struct kobject *parent; --length; for (parent = kobj; parent; parent = parent->parent) { int cur = strlen(kobject_name(parent)); /* back up enough to print this name with '/' */ length -= cur; - strncpy (path + length, kobject_name(parent), cur); + strncpy(path + length, kobject_name(parent), cur); *(path + --length) = '/'; } pr_debug("kobject: '%s' (%p): %s: path = '%s'\n", kobject_name(kobj), - kobj, __FUNCTION__,path); + kobj, __FUNCTION__, path); } /** @@ -148,7 +147,7 @@ static void kobj_kset_leave(struct kobject *kobj) kset_put(kobj->kset); } -static void kobject_init_internal(struct kobject * kobj) +static void kobject_init_internal(struct kobject *kobj) { if (!kobj) return; @@ -160,7 +159,7 @@ static void kobject_init_internal(struct kobject * kobj) static int kobject_add_internal(struct kobject *kobj) { int error = 0; - struct kobject * parent; + struct kobject *parent; if (!kobj) return -ENOENT; @@ -185,7 +184,7 @@ static int kobject_add_internal(struct kobject *kobj) pr_debug("kobject: '%s' (%p): %s: parent: '%s', set: '%s'\n", kobject_name(kobj), kobj, __FUNCTION__, parent ? kobject_name(parent) : "<NULL>", - kobj->kset ? kobject_name(&kobj->kset->kobj) : "<NULL>" ); + kobj->kset ? kobject_name(&kobj->kset->kobj) : "<NULL>"); error = create_dir(kobj); if (error) { @@ -399,12 +398,11 @@ int kobject_init_and_add(struct kobject *kobj, struct kobj_type *ktype, EXPORT_SYMBOL_GPL(kobject_init_and_add); /** - * kobject_rename - change the name of an object - * @kobj: object in question. - * @new_name: object's new name + * kobject_rename - change the name of an object + * @kobj: object in question. + * @new_name: object's new name */ - -int kobject_rename(struct kobject * kobj, const char *new_name) +int kobject_rename(struct kobject *kobj, const char *new_name) { int error = 0; const char *devpath = NULL; @@ -461,11 +459,10 @@ out: } /** - * kobject_move - move object to another parent - * @kobj: object in question. - * @new_parent: object's new parent (can be NULL) + * kobject_move - move object to another parent + * @kobj: object in question. + * @new_parent: object's new parent (can be NULL) */ - int kobject_move(struct kobject *kobj, struct kobject *new_parent) { int error; @@ -513,11 +510,10 @@ out: } /** - * kobject_del - unlink kobject from hierarchy. - * @kobj: object. + * kobject_del - unlink kobject from hierarchy. + * @kobj: object. */ - -void kobject_del(struct kobject * kobj) +void kobject_del(struct kobject *kobj) { if (!kobj) return; @@ -530,11 +526,10 @@ void kobject_del(struct kobject * kobj) } /** - * kobject_get - increment refcount for object. - * @kobj: object. + * kobject_get - increment refcount for object. + * @kobj: object. */ - -struct kobject * kobject_get(struct kobject * kobj) +struct kobject *kobject_get(struct kobject *kobj) { if (kobj) kref_get(&kobj->kref); @@ -591,12 +586,12 @@ static void kobject_release(struct kref *kref) } /** - * kobject_put - decrement refcount for object. - * @kobj: object. + * kobject_put - decrement refcount for object. + * @kobj: object. * - * Decrement the refcount, and if 0, call kobject_cleanup(). + * Decrement the refcount, and if 0, call kobject_cleanup(). */ -void kobject_put(struct kobject * kobj) +void kobject_put(struct kobject *kobj) { if (kobj) kref_put(&kobj->kref, kobject_release); @@ -670,11 +665,10 @@ struct kobject *kobject_create_and_add(const char *name, struct kobject *parent) EXPORT_SYMBOL_GPL(kobject_create_and_add); /** - * kset_init - initialize a kset for use - * @k: kset + * kset_init - initialize a kset for use + * @k: kset */ - -void kset_init(struct kset * k) +void kset_init(struct kset *k) { kobject_init_internal(&k->kobj); INIT_LIST_HEAD(&k->list); @@ -712,11 +706,10 @@ struct sysfs_ops kobj_sysfs_ops = { }; /** - * kset_register - initialize and add a kset. - * @k: kset. + * kset_register - initialize and add a kset. + * @k: kset. */ - -int kset_register(struct kset * k) +int kset_register(struct kset *k) { int err; @@ -731,39 +724,35 @@ int kset_register(struct kset * k) return 0; } - /** - * kset_unregister - remove a kset. - * @k: kset. + * kset_unregister - remove a kset. + * @k: kset. */ - -void kset_unregister(struct kset * k) +void kset_unregister(struct kset *k) { if (!k) return; kobject_put(&k->kobj); } - /** - * kset_find_obj - search for object in kset. - * @kset: kset we're looking in. - * @name: object's name. + * kset_find_obj - search for object in kset. + * @kset: kset we're looking in. + * @name: object's name. * - * Lock kset via @kset->subsys, and iterate over @kset->list, - * looking for a matching kobject. If matching object is found - * take a reference and return the object. + * Lock kset via @kset->subsys, and iterate over @kset->list, + * looking for a matching kobject. If matching object is found + * take a reference and return the object. */ - -struct kobject * kset_find_obj(struct kset * kset, const char * name) +struct kobject *kset_find_obj(struct kset *kset, const char *name) { - struct list_head * entry; - struct kobject * ret = NULL; + struct list_head *entry; + struct kobject *ret = NULL; spin_lock(&kset->list_lock); - list_for_each(entry,&kset->list) { - struct kobject * k = to_kobj(entry); - if (kobject_name(k) && !strcmp(kobject_name(k),name)) { + list_for_each(entry, &kset->list) { + struct kobject *k = to_kobj(entry); + if (kobject_name(k) && !strcmp(kobject_name(k), name)) { ret = kobject_get(k); break; } |
