Linux Kernel Procfs Guide | ||
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Instead of reading (or writing) information directly from kernel memory, procfs works with call back functions for files: functions that are called when a specific file is being read or written. Such functions have to be initialised after the procfs file is created by setting the read_proc and/or write_proc fields in the struct proc_dir_entry* that the function create_proc_entry returned:
struct proc_dir_entry* entry; entry->read_proc = read_proc_foo; entry->write_proc = write_proc_foo; |