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( O1 X" _3 H) j7 q4 m) ustruct cdev //
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dev t dev;
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cpen
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write
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struct inode
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# o2 _* r0 @& o! h/ P- vdev_t i_rdev;9 a4 s' M5 i2 [: L3 E+ D
struct cdev *i_cdev;
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struct file
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void *private_data;. F2 C3 S) P; R! E$ B Q* G
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