include/linux/mnt_namespace.h

   1 #ifndef _NAMESPACE_H_
   2 #define _NAMESPACE_H_
   3 #ifdef __KERNEL__
   4
   5 #include <linux/path.h>
   6 #include <linux/seq_file.h>
   7 #include <linux/wait.h>
   8
   9 struct mnt_namespace {
  10         atomic_t                count;
  11         struct vfsmount *       root;
  12         struct list_head        list;
  13         wait_queue_head_t poll;
  14         int event;
  15 };
  16
  17 struct proc_mounts {
  18         struct seq_file m; /* must be the first element */
  19         struct mnt_namespace *ns;
  20         struct path root;
  21         int event;
  22 };
  23
  24 struct fs_struct;
  25
  26 extern struct mnt_namespace *create_mnt_ns(struct vfsmount *mnt);
  27 extern struct mnt_namespace *copy_mnt_ns(unsigned long, struct mnt_namespace *,
  28                 struct fs_struct *);
  29 extern void put_mnt_ns(struct mnt_namespace *ns);
  30 static inline void get_mnt_ns(struct mnt_namespace *ns)
  31 {
  32         atomic_inc(&ns->count);
  33 }
  34
  35 extern const struct seq_operations mounts_op;
  36 extern const struct seq_operations mountinfo_op;
  37 extern const struct seq_operations mountstats_op;
  38 extern int mnt_had_events(struct proc_mounts *);
  39
  40 #endif
  41 #endif