Linux Japan August 2001 7 Linux RESOURCE 1 Linux I/O root 1 root chmod +s root 2 2 3 1 1 0/1 2 3 core file 4 fsck 1bit CPU Linux kill Ctrl c Segmentation fault 3 4 Linux Japan August 2001 file_operation 3 I/O 2 3 1 1 5 OS insmod rmmod gcc -c .o 1 2 insmod rmmod cleanup_module() 6 mknod open() read() write() ioctl() Linux Linux file_operation NULL 2 register_chrdev() init_module() cleanup_module()


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