1 /* SPDX-License-Identifier: GPL-2.0 */
3 #ifndef _LINUX_BINDER_INTERNAL_H
4 #define _LINUX_BINDER_INTERNAL_H
6 #include <linux/export.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>
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;
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.
31 struct binder_device {
32 struct hlist_node hlist;
33 struct miscdevice miscdev;
34 struct binder_context context;
35 struct inode *binderfs_inode;
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.
43 struct binderfs_mount_opts {
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
55 * @root_gid: gid that needs to be used when a new binder device is
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
62 struct binderfs_info {
63 struct ipc_namespace *ipc_ns;
64 struct dentry *control_dentry;
67 struct binderfs_mount_opts mount_opts;
69 struct dentry *proc_log_dir;
72 extern const struct file_operations binder_fops;
74 extern char *binder_devices_param;
76 #ifdef CONFIG_ANDROID_BINDERFS
77 extern bool is_binderfs_device(const struct inode *inode);
78 extern struct dentry *binderfs_create_file(struct dentry *dir, const char *name,
79 const struct file_operations *fops,
81 extern void binderfs_remove_file(struct dentry *dentry);
83 static inline bool is_binderfs_device(const struct inode *inode)
87 static inline struct dentry *binderfs_create_file(struct dentry *dir,
89 const struct file_operations *fops,
94 static inline void binderfs_remove_file(struct dentry *dentry) {}
97 #ifdef CONFIG_ANDROID_BINDERFS
98 extern int __init init_binderfs(void);
100 static inline int __init init_binderfs(void)
106 int binder_stats_show(struct seq_file *m, void *unused);
107 DEFINE_SHOW_ATTRIBUTE(binder_stats);
109 int binder_state_show(struct seq_file *m, void *unused);
110 DEFINE_SHOW_ATTRIBUTE(binder_state);
112 int binder_transactions_show(struct seq_file *m, void *unused);
113 DEFINE_SHOW_ATTRIBUTE(binder_transactions);
115 int binder_transaction_log_show(struct seq_file *m, void *unused);
116 DEFINE_SHOW_ATTRIBUTE(binder_transaction_log);
118 struct binder_transaction_log_entry {
130 int return_error_line;
131 uint32_t return_error;
132 uint32_t return_error_param;
133 const char *context_name;
136 struct binder_transaction_log {
139 struct binder_transaction_log_entry entry[32];
142 extern struct binder_transaction_log binder_transaction_log;
143 extern struct binder_transaction_log binder_transaction_log_failed;
144 #endif /* _LINUX_BINDER_INTERNAL_H */