Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
Bug 435275 - sg_read_long returns bad exit status
sg_read_long returns bad exit status
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: sg3_utils (Show other bugs)
All Linux
medium Severity medium
: rc
: ---
Assigned To: Dan Horák
Depends On:
  Show dependency treegraph
Reported: 2008-02-28 09:18 EST by Milos Malik
Modified: 2009-09-02 07:23 EDT (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Last Closed: 2009-09-02 07:23:25 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Patch to fix return values for sg_read_long (720 bytes, text/x-patch)
2008-02-29 06:26 EST, Phil Knirsch
no flags Details

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2009:1357 normal SHIPPED_LIVE sg3_utils bug fix and enhancement update 2009-09-01 06:51:52 EDT

  None (edit)
Description Milos Malik 2008-02-28 09:18:46 EST
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; cs-CZ; rv: Gecko/20080208 Fedora/ Firefox/

Description of problem:
Even if the command is not supported on the device the utility returns exit code 0. Other utilities in the sg3_utils package return exit code 9 when the command is not supported.

sg_read_long: issue read long (16) to device /dev/sda
    xfer_len=520 (0x208), lba=0 (0x0), correct=0
  SCSI READ LONG (16) command not supported

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1. sg_read_long --16 /dev/sda
2. echo $?

Actual Results:
exit status is 0

Expected Results:
exit status is 9

Additional info:
Comment 1 Phil Knirsch 2008-02-28 09:32:18 EST
Just reviewed the source, the return code handling is done incorrectly in
sg_read_long. Fix should be easy, so giving Devel ACK and flagging as exception
for RHEL-5.2 (not really a blocker as the tool still works on supported machines).

Thanks for spotting it Milos.

Read ya, Phil
Comment 2 Phil Knirsch 2008-02-29 06:26:32 EST
Created attachment 296328 [details]
Patch to fix return values for sg_read_long
Comment 3 Phil Knirsch 2008-02-29 06:27:28 EST
Bugfix attached, tests here show it works nicely:

[root@hamburg ~]# sg_read_long --16 /dev/sda
sg_read_long: issue read long (16) to device /dev/sda
    xfer_len=520 (0x208), lba=0 (0x0), correct=0
  SCSI READ LONG (16) command, bad field in cdb
[root@hamburg ~]# echo $?

Read ya, Phil
Comment 5 RHEL Product and Program Management 2008-07-21 19:05:58 EDT
This request was evaluated by Red Hat Product Management for
inclusion, but this component is not scheduled to be updated in
the current Red Hat Enterprise Linux release. If you would like
this request to be reviewed for the next minor release, ask your
support representative to set the next rhel-x.y flag to "?".
Comment 11 errata-xmlrpc 2009-09-02 07:23:25 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


Note You need to log in before you can comment on or make changes to this bug.