int (*get_acl)(struct inode *, int);
int (*setattr) (struct dentry *, struct iattr *);
int (*getattr) (struct vfsmount *, struct dentry *, struct kstat *);
- int (*setxattr) (struct dentry *, const char *,const void *,size_t,int);
- ssize_t (*getxattr) (struct dentry *, const char *, void *, size_t);
ssize_t (*listxattr) (struct dentry *, char *, size_t);
- int (*removexattr) (struct dentry *, const char *);
int (*fiemap)(struct inode *, struct fiemap_extent_info *, u64 start, u64 len);
void (*update_time)(struct inode *, struct timespec *, int);
int (*atomic_open)(struct inode *, struct dentry *,
permission: no (may not block if called in rcu-walk mode)
get_acl: no
getattr: no
-setxattr: yes
-getxattr: no
listxattr: no
-removexattr: yes
fiemap: no
update_time: no
atomic_open: yes
tmpfile: no
+
Additionally, ->rmdir(), ->unlink() and ->rename() have ->i_mutex on
victim.
cross-directory ->rename() has (per-superblock) ->s_vfs_rename_sem.
See Documentation/filesystems/directory-locking for more detailed discussion
of the locking scheme for directory operations.
+----------------------- xattr_handler operations -----------------------
+prototypes:
+ bool (*list)(struct dentry *dentry);
+ int (*get)(const struct xattr_handler *handler, struct dentry *dentry,
+ struct inode *inode, const char *name, void *buffer,
+ size_t size);
+ int (*set)(const struct xattr_handler *handler, struct dentry *dentry,
+ struct inode *inode, const char *name, const void *buffer,
+ size_t size, int flags);
+
+locking rules:
+ all may block
+ i_mutex(inode)
+list: no
+get: no
+set: yes
+
--------------------------- super_operations ---------------------------
prototypes:
struct inode *(*alloc_inode)(struct super_block *sb);