SCSI Subsystem Interfaces | ||
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anchor point to output to (0==writeto1_read0) or fetch from (1==writeto1_read0).
where "interesting" data is written to. Ignored when 1==writeto1_read0.
offset within buffer 0==writeto1_read0 is actually interested in. Ignored when 1==writeto1_read0 .
maximum (or actual) extent of buffer
-- undescribed --
1 -> data coming from user space towards driver (e.g. "echo some_string > /proc/scsi/xyz/2") 0 -> user what data from this driver (e.g. "cat /proc/scsi/xyz/2")
Returns length when 1==writeto1_read0. Otherwise number of chars output to buffer past offset.
Driven from scsi_proc.c which interfaces to proc_fs. proc_fs support can now be configured out of the scsi subsystem.
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