diff options
Diffstat (limited to 'fs/debugfs/internal.h')
| -rw-r--r-- | fs/debugfs/internal.h | 58 |
1 files changed, 35 insertions, 23 deletions
diff --git a/fs/debugfs/internal.h b/fs/debugfs/internal.h index 92af8ae31313..c95699b27a56 100644 --- a/fs/debugfs/internal.h +++ b/fs/debugfs/internal.h @@ -7,40 +7,52 @@ #ifndef _DEBUGFS_INTERNAL_H_ #define _DEBUGFS_INTERNAL_H_ +#include <linux/list.h> struct file_operations; +struct debugfs_inode_info { + struct inode vfs_inode; + union { + const void *raw; + const struct file_operations *real_fops; + const struct debugfs_short_fops *short_fops; + debugfs_automount_t automount; + }; + void *aux; +}; + +static inline struct debugfs_inode_info *DEBUGFS_I(struct inode *inode) +{ + return container_of(inode, struct debugfs_inode_info, vfs_inode); +} + /* declared over in file.c */ extern const struct file_operations debugfs_noop_file_operations; extern const struct file_operations debugfs_open_proxy_file_operations; extern const struct file_operations debugfs_full_proxy_file_operations; +extern const struct file_operations debugfs_full_short_proxy_file_operations; struct debugfs_fsdata { const struct file_operations *real_fops; - refcount_t active_users; - struct completion active_users_drained; + const struct debugfs_short_fops *short_fops; + struct { + refcount_t active_users; + struct completion active_users_drained; + + /* protect cancellations */ + struct mutex cancellations_mtx; + struct list_head cancellations; + unsigned int methods; + }; }; -/* - * A dentry's ->d_fsdata either points to the real fops or to a - * dynamically allocated debugfs_fsdata instance. - * In order to distinguish between these two cases, a real fops - * pointer gets its lowest bit set. - */ -#define DEBUGFS_FSDATA_IS_REAL_FOPS_BIT BIT(0) - -/* Access BITS */ -#define DEBUGFS_ALLOW_API BIT(0) -#define DEBUGFS_ALLOW_MOUNT BIT(1) - -#ifdef CONFIG_DEBUG_FS_ALLOW_ALL -#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_MOUNT | DEBUGFS_ALLOW_API) -#endif -#ifdef CONFIG_DEBUG_FS_DISALLOW_MOUNT -#define DEFAULT_DEBUGFS_ALLOW_BITS (DEBUGFS_ALLOW_API) -#endif -#ifdef CONFIG_DEBUG_FS_ALLOW_NONE -#define DEFAULT_DEBUGFS_ALLOW_BITS (0) -#endif +enum { + HAS_READ = 1, + HAS_WRITE = 2, + HAS_LSEEK = 4, + HAS_POLL = 8, + HAS_IOCTL = 16 +}; #endif /* _DEBUGFS_INTERNAL_H_ */ |