ioctl.c

elinux jffs初始版本 具体了解JFFS的文件系统！

/*
 *  ioctl.c
 *
 *  Copyright (C) 1995, 1996 by Volker Lendecke
 *
 */

#include <asm/segment.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/smb_fs.h>
#include <linux/ioctl.h>
#include <linux/sched.h>
#include <linux/mm.h>

int
smb_ioctl(struct inode *inode, struct file *filp,
	  unsigned int cmd, unsigned long arg)
{
	int result;

	switch (cmd)
	{
	case SMB_IOC_GETMOUNTUID:
		if ((result = verify_area(VERIFY_WRITE, (uid_t *) arg,
					  sizeof(uid_t))) != 0)
		{
			return result;
		}
		put_fs_word(SMB_SERVER(inode)->m.mounted_uid, (uid_t *) arg);
		return 0;
	default:
		return -EINVAL;
	}
}