FreeBSD src
982970298f
Date: Thu, 30 Sep 1993 15:13:17 +0300 Description: Old wt driver is too incomplete and buggy. It does not support Archive controllers, BSD-like tape ioctls, multiple tape controllers, different tape density etc. Fix: This driver is a replacement of the old one. It was not tested on different controllers, though. This is the streamer tape driver for 386bsd and FreeBSD, which supports Wangtek and Archive controllers. It was developed as a replacement of the old Wangtek tape driver from CMU. In comparison with the CMU driver, this version has the following enhancements: 1) Support for Archive SC402 and SC499 tape controllers added. 2) Support for up to three tape controllers on the same machine. 3) Support for BSD-style ioctls MTIOCGET, MTIOCTOP. Mt command now works adequately with this driver. 4) Asynchronous REWIND and FSF operations, close() will not wait until they finish. The next open() will wait for it instead. 5) Use of WTQICMD ioctl is limited to ERASE and RETENS operations. This prevents the user from locking the tape driver by strange tape operations. 6) Tape density switching added. 7) The status of the process, blocked on the tape operation, is displayed at the WCHAN column of the `ps' command as: wtread reading data from the tape wtwrite writing data to the tape wtrfm reading the tape marker wtwfm writing the tape marker wtrew rewinding the tape wterase doing WTQICMD ERASE operation wtretens doing WTQICMD RETENS operation wtorew doing MTIOCTOP REW/OFFL operation wtorfm doing MTIOCTOP FSF operation wtowfm doing MTIOCTOP WEOF operation Block interface (writing blocks less than 2048 bytes) is not functioning pwoperly. Use raw interface instead. |
||
|---|---|---|
| bin | ||
| etc | ||
| gnu | ||
| lib/csu/i386 | ||
| libexec/makekey | ||
| sbin | ||
| share/man/man4 | ||
| sys | ||
| usr.bin | ||
| usr.sbin | ||