1 #include <linux/mount.h>
2 #include <linux/seq_file.h>
3 #include <linux/poll.h>
7 unsigned int proc_inum;
10 struct user_namespace *user_ns;
11 u64 seq; /* Sequence number to prevent loops */
12 wait_queue_head_t poll;
22 struct list_head m_hash;
23 struct dentry *m_dentry;
24 struct list_head m_list;
29 struct list_head mnt_hash;
30 struct mount *mnt_parent;
31 struct dentry *mnt_mountpoint;
34 struct mnt_pcp __percpu *mnt_pcp;
39 struct list_head mnt_mounts; /* list of children, anchored here */
40 struct list_head mnt_child; /* and going through their mnt_child */
41 struct list_head mnt_instance; /* mount instance on sb->s_mounts */
42 const char *mnt_devname; /* Name of device e.g. /dev/dsk/hda1 */
43 struct list_head mnt_list;
44 struct list_head mnt_expire; /* link in fs-specific expiry list */
45 struct list_head mnt_share; /* circular list of shared mounts */
46 struct list_head mnt_slave_list;/* list of slave mounts */
47 struct list_head mnt_slave; /* slave list entry */
48 struct mount *mnt_master; /* slave is on master->mnt_slave_list */
49 struct mnt_namespace *mnt_ns; /* containing namespace */
50 struct mountpoint *mnt_mp; /* where is it mounted */
51 struct list_head mnt_mp_list; /* list mounts with the same mountpoint */
52 #ifdef CONFIG_FSNOTIFY
53 struct hlist_head mnt_fsnotify_marks;
54 __u32 mnt_fsnotify_mask;
56 int mnt_id; /* mount identifier */
57 int mnt_group_id; /* peer group identifier */
58 int mnt_expiry_mark; /* true if marked for expiry */
63 #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
65 static inline struct mount *real_mount(struct vfsmount *mnt)
67 return container_of(mnt, struct mount, mnt);
70 static inline int mnt_has_parent(struct mount *mnt)
72 return mnt != mnt->mnt_parent;
75 static inline int is_mounted(struct vfsmount *mnt)
77 /* neither detached nor internal? */
78 return !IS_ERR_OR_NULL(real_mount(mnt));
81 extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
82 extern void detach_mounts(struct dentry *dentry);
84 static inline void get_mnt_ns(struct mnt_namespace *ns)
86 atomic_inc(&ns->count);
91 struct mnt_namespace *ns;
93 int (*show)(struct seq_file *, struct vfsmount *);
96 #define proc_mounts(p) (container_of((p), struct proc_mounts, m))
98 extern const struct seq_operations mounts_op;