SEQ_OPEN - Online Linux Manual PageSection : 9
Updated : June 2018
Source : Kernel Hackers Manual 2​.6​.
Note : The Linux VFS

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NAMEseq_open − initialize sequential file

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SYNOPSISint seq_open(struct file * file, const struct seq_operations * op);

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ARGUMENTSfile file we initialize op method table describing the sequence

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DESCRIPTIONseq_open sets file, associating it with a sequence described by op​. op−>start sets the iterator up and returns the first element of sequence​. op−>stop shuts it down​. op−>next returns the next element of sequence​. op−>show prints element into the buffer​. In case of error −>start and −>next return ERR_PTR(error)​. In the end of sequence they return NULL​. −>show returns 0 in case of success and negative number in case of error​. Returning SEQ_SKIP means ‟discard this element and move on”​.

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