SG_SET_COMMAND_Q 0x2271 [_GET_ 0x2270] . The default it the original sg driver was not to allow commands to be
queued on the same file descriptor (actually it was more restrictive,
commands could not be queued on a SCSI device). The version 2 sg driver
kept this action as its default (for backward compatibility) and offered
these ioctl()s to change and monitor the command queuing state.
GPL The GNU "General Public License", which requires that source code to a program is made freely available for modification. The Linux kernel is licensed under the GPL, as are most of the standard system tools and utilities.
