If a read operation has an offset different from the current one, it
means an implicit lseek. If the device doesn't support lseek an ESPIPE
error is return.
Regards,
Jaime Medrano.
On Mon, Jan 05, 2004 at 01:08:14PM +0100, Frank.A.Uepping@t-online.de wrote:
> Inside some file operations functions (read/write) I saw this:
>
> size_t read(struct file *file, char *buf, size_t count loff_t *pos)
> {
> if (pos != &file->f_pos)
> return -ESPIPE;
> ...
>
> What is this good for?
>
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