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 */