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- Short: Snoops accesses to SCSI devices and others
- Author: thor@math.tu-berlin.de (Thomas Richter)
- Uploader: thor@math.tu-berlin.de (Thomas Richter)
- Version: 1.05
- Type: disk/moni
- Requires: Os 2.04
-
- This tiny program snoops accesses to devices and prints the device commands
- as well as the answers of the device over the serial port. Its outputs can
- be made visible either by an external terminal, connected to the serial port
- at 9600 baud, 8 bit, 1 stop bit, or by the standard tool Sushi or its re-
- placement Sashimi.
-
- SCSISnoop mainly useful to debug hardware drivers and filing systems; it
- is mainly intended to make SCSI device commands visible, even though it
- knows all standard scsi.device and the TD64 and NSD commands as well.
-
- If a SCSI command is issued, SCSISnoop prints the full command name if
- available, even though it does not yet attempt to make its parameters
- readable.
- _____________________________________________________________________________
-
- Changes made for 1.05:
-
- - Added the ADRMASK, LENMASK and MINLEN options to filter out only
- interesting IO transfers.
- - Added the PLAINIO switch to disable snooping all enhanced device
- features like SCSI direct IO.
- - SCSISnoop does no longer print the IO data in case MAXDUMP is set
- to zero.
- - SCSISnoop forgot to print the IO data for some commands as TD_READ64.
- - SCSISnoop haven't kept NSD apart from TD64, and printed both as TD64
- commands.
- - SCSISnoop did not snoop some of the 64 bit read commands.
-
- Thanks to Niels for the suggestions!
-
- _____________________________________________________________________________
-
- Changes made for 1.01:
-
- - The maximal size of the dumped data is now adjustable by the MAXDUMP
- option.
- - SCSISnoop prints now an ellipsis "..." in case the data is longer than
- the size selected by MAXDUMP and SCSISnoop cut the data size down.
- _____________________________________________________________________________
-
- Synopsis:
-
- SCSISnoop SCSIONLY/S,FILTERRW/S,DEVICE/A,UNIT/A/N,FLAGS/N,MAXDUMP/K/N
- ADRMASK/K/N,LENMASK/K/N,MINLEN/K/N,PLAINIO/S
-
- SCSIONLY If this switch is given, SCSISnoop prints only HD_SCSICMDs
- and the device replies; standard exec commands are not
- snooped.
-
- FILTERRW If set, SCSISnoop filters the SCSI READ(6/10), WRITE(6/10)
- WRITE_AND_VERIFY(6/10) commands out, they are not snooped.
-
- DEVICE This specifies the name of the exec device to be snooped,
- e.g. "gvpscsi.device","scsi.device","cybscsi.device".
-
- UNIT The unit number to snoop. This is in most cases the SCSI
- ID of the device to be snooped.
-
- FLAGS A flags value for opening the device. This defaults to zero
- and should be left alone in most cases.
-
- MAXDUMP The maximal number of bytes SCSISnoop dumps over the line,
- defaults to 64.
-
- ADRMASK Dumps the IO transfer only if the base address of the buffer
- and-ed with this mask is non-null. Hence, you may log
- transfers to odd addresses only by setting this mask to 1.
- Defaults to -1, i.e. log all addresses.
-
- LENMASK Dumps the IO transfer only if the transfer lenght of the
- request and-ed with this mask is non-null. Defaults to -1.
-
- MINLEN Dumps the IO transfer only if the lenght of the request is
- larger than this size. Defaults to 0, i.e. dump everything.
-
- PLAINIO Dump only standard IO request and leave all extensions like
- SCSI DIRECT alone. Only exec requests like READ and WRITE and
- their 64 bit extensions are logged. MOTOR or SEEK commands,
- and SCSI DIRECT commands are ignored.
-
- _____________________________________________________________________________
-
- The THOR-Software Licence (v2, 24th June 1998)
-
-
- This License applies to the computer programs known as "SCSISnoop".
- The "Program", below, refers to such program. The "Archive" refers to
- the package of distribution, as prepared by the author of the Program,
- Thomas Richter. Each licensee is addressed as "you".
-
-
-
- The Program and the data in the archive are freely distributable
- under the restrictions stated below, but are also Copyright (c)
- Thomas Richter.
-
- Distribution of the Program, the Archive and the data in the Archive by a
- commercial organization without written permission from the author to any
- third party is prohibited if any payment is made in connection with such
- distribution, whether directly (as in payment for a copy of the Program) or
- indirectly (as in payment for some service related to the Program, or
- payment for some product or service that includes a copy of the Program
- "without charge"; these are only examples, and not an exhaustive enumeration
- of prohibited activities).
-
-
- However, the following methods of distribution
- involving payment shall not in and of themselves be a violation of this
- restriction:
-
-
- (i) Posting the Program on a public access information storage and
- retrieval service for which a fee is received for retrieving information
- (such as an on-line service), provided that the fee is not
- content-dependent (i.e., the fee would be the same for retrieving the same
- volume of information consisting of random data).
-
-
- (ii) Distributing the Program on a CD-ROM, provided that
-
- a) the Archive is reproduced entirely and verbatim on such CD-ROM, including
- especially this licence agreement;
-
- b) the CD-ROM is made available to the public for a nominal fee only,
-
- c) a copy of the CD is made available to the author for free except for
- shipment costs, and
-
- d) provided further that all information on such CD-ROM is redistributable
- for non-commercial purposes without charge.
-
-
- Redistribution of a modified version of the Archive, the Program or the
- contents of the Archive is prohibited in any way, by any organization,
- regardless whether commercial or non-commercial. Everything must be kept
- together, in original and unmodified form.
-
-
-
-
- Limitations.
-
-
- THE PROGRAM IS PROVIDED TO YOU "AS IS", WITHOUT WARRANTY. THERE IS NO
- WARRANTY FOR THE PROGRAM, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
- PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. THE ENTIRE
- RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD
- THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY
- SERVICING, REPAIR OR CORRECTION.
-
-
- IF YOU DO NOT ACCEPT THIS LICENCE, YOU MUST DELETE THE PROGRAM, THE ARCHIVE
- AND ALL DATA OF THIS ARCHIVE FROM YOUR STORAGE SYSTEM. YOU ACCEPT THIS
- LICENCE BY USING OR REDISTRIBUTING THE PROGRAM.
-
-
- Thomas Richter
- _____________________________________________________________________________
-
- So long,
- Thomas Richter (August 2000)
-
-
- ============================= Archive contents =============================
-
- Original Packed Ratio Date Time Name
- -------- ------- ----- --------- -------- -------------
- 7840 4028 48.6% 05-Aug-00 13:37:28 +SCSISnoop
- 6626 2849 57.0% 05-Aug-00 13:38:46 +SCSISnoop.readme
- -------- ------- ----- --------- --------
- 14466 6877 52.4% 03-Sep-100 15:14:04 2 files
-