各种结构体

一、inode结构体

struct inode {  
　　struct hlist_node i_hash;  
　　struct list_head i_list;  
　　struct list_head i_sb_list;  
　　struct list_head i_dentry;  
　　unsigned long  i_ino;  
　　atomic_t  i_count;  
　　unsigned int  i_nlink;  
　　uid_t   i_uid;//inode拥有者id  
　　gid_t   i_gid;//inode所属群组id  
　　dev_t   i_rdev;//若是设备文件，表示记录设备的设备号  
　　u64   i_version;  
　　loff_t   i_size;//inode所代表大少  
#ifdef __NEED_I_SIZE_ORDERED  
　　seqcount_t  i_size_seqcount;  
#endif  
　　struct timespec  i_atime;//inode最近一次的存取时间  
　　struct timespec  i_mtime;//inode最近一次修改时间  
　　struct timespec  i_ctime;//inode的生成时间  
　　unsigned int  i_blkbits;  
　　blkcnt_t  i_blocks;  
　　unsigned short          i_bytes;  
　　umode_t   i_mode;  
　　spinlock_t  i_lock;   
　　struct mutex  i_mutex;  
　　struct rw_semaphore i_alloc_sem;  
　　const struct inode_operations *i_op;  
　　const struct file_operations *i_fop;   
　　struct super_block *i_sb;  
　　struct file_lock *i_flock;  
　　struct address_space *i_mapping;  
　　struct address_space i_data;  
#ifdef CONFIG_QUOTA  
　　struct dquot  *i_dquot[MAXQUOTAS];  
#endif  
　　struct list_head i_devices;  
　　union {  
　　　　struct pipe_inode_info *i_pipe;  
　　　　struct block_device *i_bdev;  
　　　　struct cdev  *i_cdev;//若是字符设备，对应的为cdev结构  
　　}; 
}; 

二、cdev结构体

struct cdev {
	struct kobject kobj;
	struct module *owner;
	const struct file_operations *ops;
	struct list_head list;
	dev_t dev;
	unsigned int count;
	//int	gpio;
};

三、platform_device结构体

struct platform_device {
	const char	*name;
	int		id;
	bool		id_auto;
	struct device	dev;
	u32		num_resources;
	struct resource	*resource;

	const struct platform_device_id	*id_entry;
	char *driver_override; /* Driver name to force a match */

	/* MFD cell pointer */
	struct mfd_cell *mfd_cell;

	/* arch specific additions */
	struct pdev_archdata	archdata;
};

四、device结构体

struct device {
	struct device		*parent;

	struct device_private	*p;

	struct kobject kobj;
	const char		*init_name; /* initial name of the device */
	const struct device_type *type;

	struct mutex		mutex;	/* mutex to synchronize calls to
					 * its driver.
					 */

	struct bus_type	*bus;		/* type of bus device is on */
	struct device_driver *driver;	/* which driver has allocated this
					   device */
	void		*platform_data;	/* Platform specific data, device
					   core doesn't touch it */
	void		*driver_data;	/* Driver data, set and get with
					   dev_set/get_drvdata */
	struct dev_pm_info	power;
	struct dev_pm_domain	*pm_domain;

#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
	struct irq_domain	*msi_domain;
#endif
#ifdef CONFIG_PINCTRL
	struct dev_pin_info	*pins;
#endif
#ifdef CONFIG_GENERIC_MSI_IRQ
	struct list_head	msi_list;
#endif

#ifdef CONFIG_NUMA
	int		numa_node;	/* NUMA node this device is close to */
#endif
	u64		*dma_mask;	/* dma mask (if dma'able device) */
	u64		coherent_dma_mask;/* Like dma_mask, but for
					     alloc_coherent mappings as
					     not all hardware supports
					     64 bit addresses for consistent
					     allocations such descriptors. */
	unsigned long	dma_pfn_offset;

	struct device_dma_parameters *dma_parms;

	struct list_head	dma_pools;	/* dma pools (if dma'ble) */

	struct dma_coherent_mem	*dma_mem; /* internal for coherent mem
					     override */
#ifdef CONFIG_DMA_CMA
	struct cma *cma_area;		/* contiguous memory area for dma
					   allocations */
#endif
	/* arch specific additions */
	struct dev_archdata	archdata;

	struct device_node	*of_node; /* associated device tree node */
	struct fwnode_handle	*fwnode; /* firmware device node */

	dev_t			devt;	/* dev_t, creates the sysfs "dev" */
	u32			id;	/* device instance */

	spinlock_t		devres_lock;
	struct list_head	devres_head;

	struct klist_node	knode_class;
	struct class		*class;
	const struct attribute_group **groups;	/* optional groups */

	void	(*release)(struct device *dev);
	struct iommu_group	*iommu_group;

	bool			offline_disabled:1;
	bool			offline:1;
	int				gpio;/* num of gpio */
};

五、file结构体