[linux-2.6-block.git] / drivers / android / binder_internal.h

/* SPDX-License-Identifier: GPL-2.0 */

#ifndef _LINUX_BINDER_INTERNAL_H
#define _LINUX_BINDER_INTERNAL_H

#include <linux/export.h>
#include <linux/fs.h>
#include <linux/list.h>
#include <linux/miscdevice.h>
#include <linux/mutex.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <linux/uidgid.h>

struct binder_context {
	struct binder_node *binder_context_mgr_node;
	struct mutex context_mgr_node_lock;
	kuid_t binder_context_mgr_uid;
	const char *name;
};

/**
 * struct binder_device - information about a binder device node
 * @hlist:          list of binder devices (only used for devices requested via
 *                  CONFIG_ANDROID_BINDER_DEVICES)
 * @miscdev:        information about a binder character device node
 * @context:        binder context information
 * @binderfs_inode: This is the inode of the root dentry of the super block
 *                  belonging to a binderfs mount.
 */
struct binder_device {
	struct hlist_node hlist;
	struct miscdevice miscdev;
	struct binder_context context;
	struct inode *binderfs_inode;
};

/**
 * binderfs_mount_opts - mount options for binderfs
 * @max: maximum number of allocatable binderfs binder devices
 * @stats_mode: enable binder stats in binderfs.
 */
struct binderfs_mount_opts {
	int max;
	int stats_mode;
};

/**
 * binderfs_info - information about a binderfs mount
 * @ipc_ns:         The ipc namespace the binderfs mount belongs to.
 * @control_dentry: This records the dentry of this binderfs mount
 *                  binder-control device.
 * @root_uid:       uid that needs to be used when a new binder device is
 *                  created.
 * @root_gid:       gid that needs to be used when a new binder device is
 *                  created.
 * @mount_opts:     The mount options in use.
 * @device_count:   The current number of allocated binder devices.
 * @proc_log_dir:   Pointer to the directory dentry containing process-specific
 *                  logs.
 */
struct binderfs_info {
	struct ipc_namespace *ipc_ns;
	struct dentry *control_dentry;
	kuid_t root_uid;
	kgid_t root_gid;
	struct binderfs_mount_opts mount_opts;
	int device_count;
	struct dentry *proc_log_dir;
};

extern const struct file_operations binder_fops;

extern char *binder_devices_param;

#ifdef CONFIG_ANDROID_BINDERFS
extern bool is_binderfs_device(const struct inode *inode);
extern struct dentry *binderfs_create_file(struct dentry *dir, const char *name,
					   const struct file_operations *fops,
					   void *data);
extern void binderfs_remove_file(struct dentry *dentry);
#else
static inline bool is_binderfs_device(const struct inode *inode)
{
	return false;
}
static inline struct dentry *binderfs_create_file(struct dentry *dir,
					   const char *name,
					   const struct file_operations *fops,
					   void *data)
{
	return NULL;
}
static inline void binderfs_remove_file(struct dentry *dentry) {}
#endif

#ifdef CONFIG_ANDROID_BINDERFS
extern int __init init_binderfs(void);
#else
static inline int __init init_binderfs(void)
{
	return 0;
}
#endif

int binder_stats_show(struct seq_file *m, void *unused);
DEFINE_SHOW_ATTRIBUTE(binder_stats);

int binder_state_show(struct seq_file *m, void *unused);
DEFINE_SHOW_ATTRIBUTE(binder_state);

int binder_transactions_show(struct seq_file *m, void *unused);
DEFINE_SHOW_ATTRIBUTE(binder_transactions);

int binder_transaction_log_show(struct seq_file *m, void *unused);
DEFINE_SHOW_ATTRIBUTE(binder_transaction_log);

struct binder_transaction_log_entry {
	int debug_id;
	int debug_id_done;
	int call_type;
	int from_proc;
	int from_thread;
	int target_handle;
	int to_proc;
	int to_thread;
	int to_node;
	int data_size;
	int offsets_size;
	int return_error_line;
	uint32_t return_error;
	uint32_t return_error_param;
	const char *context_name;
};

struct binder_transaction_log {
	atomic_t cur;
	bool full;
	struct binder_transaction_log_entry entry[32];
};

extern struct binder_transaction_log binder_transaction_log;
extern struct binder_transaction_log binder_transaction_log_failed;
#endif /* _LINUX_BINDER_INTERNAL_H */
Commit	Line	Data
3ad20fe3 CB	1	/* SPDX-License-Identifier: GPL-2.0 */
	2
	3	#ifndef _LINUX_BINDER_INTERNAL_H
	4	#define _LINUX_BINDER_INTERNAL_H
	5
	6	#include <linux/export.h>
	7	#include <linux/fs.h>
	8	#include <linux/list.h>
	9	#include <linux/miscdevice.h>
	10	#include <linux/mutex.h>
	11	#include <linux/stddef.h>
	12	#include <linux/types.h>
	13	#include <linux/uidgid.h>
	14
	15	struct binder_context {
	16	struct binder_node *binder_context_mgr_node;
	17	struct mutex context_mgr_node_lock;
	18	kuid_t binder_context_mgr_uid;
	19	const char *name;
	20	};
	21
	22	/**
	23	* struct binder_device - information about a binder device node
	24	* @hlist: list of binder devices (only used for devices requested via
	25	* CONFIG_ANDROID_BINDER_DEVICES)
	26	* @miscdev: information about a binder character device node
	27	* @context: binder context information
	28	* @binderfs_inode: This is the inode of the root dentry of the super block
	29	* belonging to a binderfs mount.
	30	*/
	31	struct binder_device {
	32	struct hlist_node hlist;
	33	struct miscdevice miscdev;
	34	struct binder_context context;
	35	struct inode *binderfs_inode;
	36	};
	37
4feb80fa HV	38	/**
	39	* binderfs_mount_opts - mount options for binderfs
	40	* @max: maximum number of allocatable binderfs binder devices
	41	* @stats_mode: enable binder stats in binderfs.
	42	*/
	43	struct binderfs_mount_opts {
	44	int max;
	45	int stats_mode;
	46	};
	47
	48	/**
	49	* binderfs_info - information about a binderfs mount
	50	* @ipc_ns: The ipc namespace the binderfs mount belongs to.
	51	* @control_dentry: This records the dentry of this binderfs mount
	52	* binder-control device.
	53	* @root_uid: uid that needs to be used when a new binder device is
	54	* created.
	55	* @root_gid: gid that needs to be used when a new binder device is
	56	* created.
	57	* @mount_opts: The mount options in use.
	58	* @device_count: The current number of allocated binder devices.
	59	* @proc_log_dir: Pointer to the directory dentry containing process-specific
	60	* logs.
	61	*/
	62	struct binderfs_info {
	63	struct ipc_namespace *ipc_ns;
	64	struct dentry *control_dentry;
	65	kuid_t root_uid;
	66	kgid_t root_gid;
	67	struct binderfs_mount_opts mount_opts;
	68	int device_count;
	69	struct dentry *proc_log_dir;
	70	};
	71
3ad20fe3 CB	72	extern const struct file_operations binder_fops;
3ad20fe3 CB	73
ca2864c6 HV	74	extern char *binder_devices_param;
ca2864c6 HV	75
3ad20fe3 CB	76	#ifdef CONFIG_ANDROID_BINDERFS
3ad20fe3 CB	77	extern bool is_binderfs_device(const struct inode *inode);
4feb80fa HV	78	extern struct dentry binderfs_create_file(struct dentry dir, const char *name,
	79	const struct file_operations *fops,
	80	void *data);
	81	extern void binderfs_remove_file(struct dentry *dentry);
3ad20fe3 CB	82	#else
	83	static inline bool is_binderfs_device(const struct inode *inode)
	84	{
	85	return false;
	86	}
4feb80fa HV	87	static inline struct dentry binderfs_create_file(struct dentry dir,
	88	const char *name,
	89	const struct file_operations *fops,
	90	void *data)
	91	{
	92	return NULL;
	93	}
	94	static inline void binderfs_remove_file(struct dentry *dentry) {}
3ad20fe3 CB	95	#endif
3ad20fe3 CB	96
5b9633af CB	97	#ifdef CONFIG_ANDROID_BINDERFS
	98	extern int __init init_binderfs(void);
	99	#else
	100	static inline int __init init_binderfs(void)
	101	{
	102	return 0;
	103	}
	104	#endif
	105
0e13e452 HV	106	int binder_stats_show(struct seq_file m, void unused);
	107	DEFINE_SHOW_ATTRIBUTE(binder_stats);
	108
	109	int binder_state_show(struct seq_file m, void unused);
	110	DEFINE_SHOW_ATTRIBUTE(binder_state);
	111
	112	int binder_transactions_show(struct seq_file m, void unused);
	113	DEFINE_SHOW_ATTRIBUTE(binder_transactions);
03e2e07e HV	114
	115	int binder_transaction_log_show(struct seq_file m, void unused);
	116	DEFINE_SHOW_ATTRIBUTE(binder_transaction_log);
	117
	118	struct binder_transaction_log_entry {
	119	int debug_id;
	120	int debug_id_done;
	121	int call_type;
	122	int from_proc;
	123	int from_thread;
	124	int target_handle;
	125	int to_proc;
	126	int to_thread;
	127	int to_node;
	128	int data_size;
	129	int offsets_size;
	130	int return_error_line;
	131	uint32_t return_error;
	132	uint32_t return_error_param;
	133	const char *context_name;
	134	};
	135
	136	struct binder_transaction_log {
	137	atomic_t cur;
	138	bool full;
	139	struct binder_transaction_log_entry entry[32];
	140	};
	141
	142	extern struct binder_transaction_log binder_transaction_log;
	143	extern struct binder_transaction_log binder_transaction_log_failed;
3ad20fe3	144	#endif /* _LINUX_BINDER_INTERNAL_H */