drivers/android/binder_internal.h

   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
  38 extern const struct file_operations binder_fops;
  39
  40 #ifdef CONFIG_ANDROID_BINDERFS
  41 extern bool is_binderfs_device(const struct inode *inode);
  42 #else
  43 static inline bool is_binderfs_device(const struct inode *inode)
  44 {
  45         return false;
  46 }
  47 #endif
  48
  49 #ifdef CONFIG_ANDROID_BINDERFS
  50 extern int __init init_binderfs(void);
  51 #else
  52 static inline int __init init_binderfs(void)
  53 {
  54         return 0;
  55 }
  56 #endif
  57
  58 #endif /* _LINUX_BINDER_INTERNAL_H */