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8.20. SG_SET_TRANSFORMSG_SET_TRANSFORM 0x2204. Only is meaningful when SG_EMULATED host has yielded 1 (i.e. the low-level is the ide-scsi device driver); otherwise an EINVAL error occurs. The default state is to _not_ transform SCSI commands to the corresponding ATAPI commands but pass them straight through as is. [Only certain classes of SCSI commands need to be transformed to their ATAPI equivalents.] The third argument is interpreted as an integer. When it is non-zero then a flag is set inside the ide-scsi driver that transforms subsequent commands sent to this driver. When zero is passed as the 3rd argument to this ioctl then the flag within the ide-scsi driver is cleared and subsequent commands are not transformed. Beware, this state will affect all devices (and hence all related sg file descriptors) associated with this ide-scsi "bus". Linux HOWTO full list |
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This document, LDP HOWTO-INDEX, is copyrighted (c) 1995 - 2002 by Tim Bynum, Guylhem Aznar, Joshua Drake and Greg Ferguson. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is available at http://www.gnu.org/copyleft/fdl.html. If you have questions, please contact the LDP.
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