1 files changed, 81 insertions, 0 deletions

diff --git a/include/linux/mount.h b/include/linux/mount.h
new file mode 100644
index 000000000000..8b8d3b9beefd
--- /dev/null
+++ b/include/linux/mount.h
@@ -0,0 +1,81 @@
+/*
+ *
+ * Definitions for mount interface. This describes the in the kernel build 
+ * linkedlist with mounted filesystems.
+ *
+ * Author:  Marco van Wieringen <mvw@planets.elm.net>
+ *
+ * Version: $Id: mount.h,v 2.0 1996/11/17 16:48:14 mvw Exp mvw $
+ *
+ */
+#ifndef _LINUX_MOUNT_H
+#define _LINUX_MOUNT_H
+#ifdef __KERNEL__
+
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <asm/atomic.h>
+
+#define MNT_NOSUID      1
+#define MNT_NODEV       2
+#define MNT_NOEXEC      4
+
+struct vfsmount
+{
+        struct list_head mnt_hash;
+        struct vfsmount *mnt_parent;    /* fs we are mounted on */
+        struct dentry *mnt_mountpoint;  /* dentry of mountpoint */
+        struct dentry *mnt_root;        /* root of the mounted tree */
+        struct super_block *mnt_sb;     /* pointer to superblock */
+        struct list_head mnt_mounts;    /* list of children, anchored here */
+        struct list_head mnt_child;     /* and going through their mnt_child */
+        atomic_t mnt_count;
+        int mnt_flags;
+        int mnt_expiry_mark;            /* true if marked for expiry */
+        char *mnt_devname;              /* Name of device e.g. /dev/dsk/hda1 */
+        struct list_head mnt_list;
+        struct list_head mnt_fslink;    /* link in fs-specific expiry list */
+        struct namespace *mnt_namespace; /* containing namespace */
+};
+
+static inline struct vfsmount *mntget(struct vfsmount *mnt)
+{
+        if (mnt)
+                atomic_inc(&mnt->mnt_count);
+        return mnt;
+}
+
+extern void __mntput(struct vfsmount *mnt);
+
+static inline void _mntput(struct vfsmount *mnt)
+{
+        if (mnt) {
+                if (atomic_dec_and_test(&mnt->mnt_count))
+                        __mntput(mnt);
+        }
+}
+
+static inline void mntput(struct vfsmount *mnt)
+{
+        if (mnt) {
+                mnt->mnt_expiry_mark = 0;
+                _mntput(mnt);
+        }
+}
+
+extern void free_vfsmnt(struct vfsmount *mnt);
+extern struct vfsmount *alloc_vfsmnt(const char *name);
+extern struct vfsmount *do_kern_mount(const char *fstype, int flags,
+                                      const char *name, void *data);
+
+struct nameidata;
+
+extern int do_add_mount(struct vfsmount *newmnt, struct nameidata *nd,
+                        int mnt_flags, struct list_head *fslist);
+
+extern void mark_mounts_for_expiry(struct list_head *mounts);
+
+extern spinlock_t vfsmount_lock;
+
+#endif
+#endif /* _LINUX_MOUNT_H */