include/linux/smb_fs_i.h


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/*
 *  smb_fs_i.h
 *
 *  Copyright (C) 1995 by Paal-Kr. Engstad and Volker Lendecke
 *  Copyright (C) 1997 by Volker Lendecke
 *
 */

#ifndef _LINUX_SMB_FS_I
#define _LINUX_SMB_FS_I

#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/fs.h>

/*
 * smb fs inode data (in memory only)
 */
struct smb_inode_info {

	/*
	 * file handles are local to a connection. A file is open if
	 * (open == generation).
	 */
        unsigned int open;	/* open generation */
	__u16 fileid;		/* What id to handle a file with? */
	__u16 attr;		/* Attribute fields, DOS value */

	__u16 access;		/* Access mode */
	__u16 flags;
	unsigned long oldmtime;	/* last time refreshed */
	unsigned long closed;	/* timestamp when closed */
	unsigned openers;	/* number of fileid users */

	struct inode vfs_inode;	/* must be at the end */
};

#endif
#endif
#ifndef _LINUX_PID_NS_H
#define _LINUX_PID_NS_H

#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/threads.h>
#include <linux/nsproxy.h>
#include <linux/kref.h>

struct pidmap {
       atomic_t nr_free;
       void *page;
};

#define PIDMAP_ENTRIES         ((PID_MAX_LIMIT + 8*PAGE_SIZE - 1)/PAGE_SIZE/8)

struct pid_namespace {
	struct kref kref;
	struct pidmap pidmap[PIDMAP_ENTRIES];
	int last_pid;
	struct task_struct *child_reaper;
	struct kmem_cache *pid_cachep;
	int level;
	struct pid_namespace *parent;
#ifdef CONFIG_PROC_FS
	struct vfsmount *proc_mnt;
#endif
};

extern struct pid_namespace init_pid_ns;

#ifdef CONFIG_PID_NS
static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
{
	if (ns != &init_pid_ns)
		kref_get(&ns->kref);
	return ns;
}

extern struct pid_namespace *copy_pid_ns(unsigned long flags, struct pid_namespace *ns);
extern void free_pid_ns(struct kref *kref);

static inline void put_pid_ns(struct pid_namespace *ns)
{
	if (ns != &init_pid_ns)
		kref_put(&ns->kref, free_pid_ns);
}

#else /* !CONFIG_PID_NS */
#include <linux/err.h>

static inline struct pid_namespace *get_pid_ns(struct pid_namespace *ns)
{
	return ns;
}

static inline struct pid_namespace *
copy_pid_ns(unsigned long flags, struct pid_namespace *ns)
{
	if (flags & CLONE_NEWPID)
		ns = ERR_PTR(-EINVAL);
	return ns;
}

static inline void put_pid_ns(struct pid_namespace *ns)
{
}

#endif /* CONFIG_PID_NS */

static inline struct pid_namespace *task_active_pid_ns(struct task_struct *tsk)
{
	return tsk->nsproxy->pid_ns;
}

static inline struct task_struct *task_child_reaper(struct task_struct *tsk)
{
	BUG_ON(tsk != current);
	return tsk->nsproxy->pid_ns->child_reaper;
}

#endif /* _LINUX_PID_NS_H */