47 lines
1.8 KiB
C
47 lines
1.8 KiB
C
#ifndef _TOS_VFS_DEVICE_H_
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#define _TOS_VFS_DEVICE_H_
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typedef struct vfs_inode_st vfs_inode_t;
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typedef struct vfs_char_device_operations_st {
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int (*open) (vfs_file_t *file);
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int (*close) (vfs_file_t *file);
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ssize_t (*read) (vfs_file_t *file, void *buf, size_t count);
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ssize_t (*write) (vfs_file_t *file, const void *buf, size_t count);
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vfs_off_t (*lseek) (vfs_file_t *file, vfs_off_t offset, vfs_whence_t whence);
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int (*ioctl) (vfs_file_t *file, int cmd, unsigned long arg);
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int (*suspend) (void);
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int (*resume) (void);
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} vfs_chrdev_ops_t;
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typedef struct vfs_block_device_geometry_st {
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int is_available;
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uint32_t sector_size;
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uint32_t nsectors;
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} vfs_blkdev_geo_t;
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typedef struct vfs_block_device_operations_st {
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int (*open) (vfs_inode_t *dev);
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int (*close) (vfs_inode_t *dev);
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ssize_t (*read) (vfs_inode_t *dev, void *buf, size_t start_sector, unsigned int nsectors);
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ssize_t (*write) (vfs_inode_t *dev, const unsigned char *buf, size_t start_sector, unsigned int nsectors);
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int (*geometry) (vfs_inode_t *dev, vfs_blkdev_geo_t *geo);
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int (*erase) (vfs_inode_t *dev, size_t start_sector, size_t nsectors);
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int (*ioctl) (vfs_inode_t *dev, int cmd, unsigned long arg);
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int (*suspend) (void);
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int (*resume) (void);
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} vfs_blkdev_ops_t;
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__API__ vfs_err_t tos_vfs_block_device_register(const char *device_name, vfs_blkdev_ops_t *ops);
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__API__ vfs_err_t tos_vfs_block_device_unregister(const char *device_name);
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__API__ vfs_err_t tos_vfs_char_device_register(const char *device_name, vfs_chrdev_ops_t *ops);
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__API__ vfs_err_t tos_vfs_char_device_unregister(const char *device_name);
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#endif /* _TOS_VFS_DEVICE_H_ */
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