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-rw-r--r--include/linux/kobject.h104
1 files changed, 55 insertions, 49 deletions
diff --git a/include/linux/kobject.h b/include/linux/kobject.h
index 939b11268c86..c8219505a79f 100644
--- a/include/linux/kobject.h
+++ b/include/linux/kobject.h
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* kobject.h - generic kernel object infrastructure.
*
@@ -6,9 +7,7 @@
* Copyright (c) 2006-2008 Greg Kroah-Hartman <greg@kroah.com>
* Copyright (c) 2006-2008 Novell Inc.
*
- * This file is released under the GPLv2.
- *
- * Please read Documentation/kobject.txt before using the kobject
+ * Please read Documentation/core-api/kobject.rst before using the kobject
* interface, ESPECIALLY the parts about reference counts and object
* destructors.
*/
@@ -20,22 +19,26 @@
#include <linux/list.h>
#include <linux/sysfs.h>
#include <linux/compiler.h>
+#include <linux/container_of.h>
#include <linux/spinlock.h>
#include <linux/kref.h>
#include <linux/kobject_ns.h>
-#include <linux/kernel.h>
#include <linux/wait.h>
#include <linux/atomic.h>
+#include <linux/workqueue.h>
+#include <linux/uidgid.h>
#define UEVENT_HELPER_PATH_LEN 256
-#define UEVENT_NUM_ENVP 32 /* number of env pointers */
+#define UEVENT_NUM_ENVP 64 /* number of env pointers */
#define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */
+#ifdef CONFIG_UEVENT_HELPER
/* path to the userspace helper executed on an event */
extern char uevent_helper[];
+#endif
/* counter to tag the uevent, read only except for the kobject core */
-extern u64 uevent_seqnum;
+extern atomic64_t uevent_seqnum;
/*
* The actions here must match the index to the string array
@@ -54,7 +57,8 @@ enum kobject_action {
KOBJ_MOVE,
KOBJ_ONLINE,
KOBJ_OFFLINE,
- KOBJ_MAX
+ KOBJ_BIND,
+ KOBJ_UNBIND,
};
struct kobject {
@@ -62,58 +66,64 @@ struct kobject {
struct list_head entry;
struct kobject *parent;
struct kset *kset;
- struct kobj_type *ktype;
- struct sysfs_dirent *sd;
+ const struct kobj_type *ktype;
+ struct kernfs_node *sd; /* sysfs directory entry */
struct kref kref;
+
unsigned int state_initialized:1;
unsigned int state_in_sysfs:1;
unsigned int state_add_uevent_sent:1;
unsigned int state_remove_uevent_sent:1;
unsigned int uevent_suppress:1;
+
+#ifdef CONFIG_DEBUG_KOBJECT_RELEASE
+ struct delayed_work release;
+#endif
};
-extern __printf(2, 3)
-int kobject_set_name(struct kobject *kobj, const char *name, ...);
-extern int kobject_set_name_vargs(struct kobject *kobj, const char *fmt,
- va_list vargs);
+__printf(2, 3) int kobject_set_name(struct kobject *kobj, const char *name, ...);
+__printf(2, 0) int kobject_set_name_vargs(struct kobject *kobj, const char *fmt, va_list vargs);
static inline const char *kobject_name(const struct kobject *kobj)
{
return kobj->name;
}
-extern void kobject_init(struct kobject *kobj, struct kobj_type *ktype);
-extern __printf(3, 4) __must_check
-int kobject_add(struct kobject *kobj, struct kobject *parent,
- const char *fmt, ...);
-extern __printf(4, 5) __must_check
-int kobject_init_and_add(struct kobject *kobj,
- struct kobj_type *ktype, struct kobject *parent,
- const char *fmt, ...);
+void kobject_init(struct kobject *kobj, const struct kobj_type *ktype);
+__printf(3, 4) __must_check int kobject_add(struct kobject *kobj,
+ struct kobject *parent,
+ const char *fmt, ...);
+__printf(4, 5) __must_check int kobject_init_and_add(struct kobject *kobj,
+ const struct kobj_type *ktype,
+ struct kobject *parent,
+ const char *fmt, ...);
-extern void kobject_del(struct kobject *kobj);
+void kobject_del(struct kobject *kobj);
-extern struct kobject * __must_check kobject_create(void);
-extern struct kobject * __must_check kobject_create_and_add(const char *name,
- struct kobject *parent);
+struct kobject * __must_check kobject_create_and_add(const char *name, struct kobject *parent);
-extern int __must_check kobject_rename(struct kobject *, const char *new_name);
-extern int __must_check kobject_move(struct kobject *, struct kobject *);
+int __must_check kobject_rename(struct kobject *, const char *new_name);
+int __must_check kobject_move(struct kobject *, struct kobject *);
-extern struct kobject *kobject_get(struct kobject *kobj);
-extern void kobject_put(struct kobject *kobj);
+struct kobject *kobject_get(struct kobject *kobj);
+struct kobject * __must_check kobject_get_unless_zero(struct kobject *kobj);
+void kobject_put(struct kobject *kobj);
-extern char *kobject_get_path(struct kobject *kobj, gfp_t flag);
+const void *kobject_namespace(const struct kobject *kobj);
+void kobject_get_ownership(const struct kobject *kobj, kuid_t *uid, kgid_t *gid);
+char *kobject_get_path(const struct kobject *kobj, gfp_t flag);
struct kobj_type {
void (*release)(struct kobject *kobj);
const struct sysfs_ops *sysfs_ops;
- struct attribute **default_attrs;
- const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
- const void *(*namespace)(struct kobject *kobj);
+ const struct attribute_group **default_groups;
+ const struct kobj_ns_type_operations *(*child_ns_type)(const struct kobject *kobj);
+ const void *(*namespace)(const struct kobject *kobj);
+ void (*get_ownership)(const struct kobject *kobj, kuid_t *uid, kgid_t *gid);
};
struct kobj_uevent_env {
+ char *argv[3];
char *envp[UEVENT_NUM_ENVP];
int envp_idx;
char buf[UEVENT_BUFFER_SIZE];
@@ -121,10 +131,9 @@ struct kobj_uevent_env {
};
struct kset_uevent_ops {
- int (* const filter)(struct kset *kset, struct kobject *kobj);
- const char *(* const name)(struct kset *kset, struct kobject *kobj);
- int (* const uevent)(struct kset *kset, struct kobject *kobj,
- struct kobj_uevent_env *env);
+ int (* const filter)(const struct kobject *kobj);
+ const char *(* const name)(const struct kobject *kobj);
+ int (* const uevent)(const struct kobject *kobj, struct kobj_uevent_env *env);
};
struct kobj_attribute {
@@ -161,14 +170,13 @@ struct kset {
spinlock_t list_lock;
struct kobject kobj;
const struct kset_uevent_ops *uevent_ops;
-};
+} __randomize_layout;
-extern void kset_init(struct kset *kset);
-extern int __must_check kset_register(struct kset *kset);
-extern void kset_unregister(struct kset *kset);
-extern struct kset * __must_check kset_create_and_add(const char *name,
- const struct kset_uevent_ops *u,
- struct kobject *parent_kobj);
+void kset_init(struct kset *kset);
+int __must_check kset_register(struct kset *kset);
+void kset_unregister(struct kset *kset);
+struct kset * __must_check kset_create_and_add(const char *name, const struct kset_uevent_ops *u,
+ struct kobject *parent_kobj);
static inline struct kset *to_kset(struct kobject *kobj)
{
@@ -185,12 +193,12 @@ static inline void kset_put(struct kset *k)
kobject_put(&k->kobj);
}
-static inline struct kobj_type *get_ktype(struct kobject *kobj)
+static inline const struct kobj_type *get_ktype(const struct kobject *kobj)
{
return kobj->ktype;
}
-extern struct kobject *kset_find_obj(struct kset *, const char *);
+struct kobject *kset_find_obj(struct kset *, const char *);
/* The global /sys/kernel/ kobject for people to chain off of */
extern struct kobject *kernel_kobj;
@@ -206,11 +214,9 @@ extern struct kobject *firmware_kobj;
int kobject_uevent(struct kobject *kobj, enum kobject_action action);
int kobject_uevent_env(struct kobject *kobj, enum kobject_action action,
char *envp[]);
+int kobject_synth_uevent(struct kobject *kobj, const char *buf, size_t count);
__printf(2, 3)
int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...);
-int kobject_action_type(const char *buf, size_t count,
- enum kobject_action *type);
-
#endif /* _KOBJECT_H_ */
generated by cgit (git 2.34.1) at 2025-12-22 00:32:27 +0000