bugfindutils - Bugs: bug #7266, Linux device number bug report

 
 

bug #7266: Linux device number bug report

Submitted by:  None
Submitted on:  Thu 15 Jan 2004 09:13:44 AM UTC  
 
Category: findSeverity: 2 - Minor
Item Group: NoneStatus: Invalid
Privacy: PublicAssigned to: James Youngman <jay>
Originator Name: Originator Email: -unavailable-
Open/Closed: ClosedRelease: None
Fixed Release: None

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Sun 21 Nov 2004 04:59:43 PM UTC, comment #2:

The findutils code uses the header file sysmacros.h, which is provided by the system. This defines the macros major() and minor(). If those produce 32-bit values, "listfile.c" will cope with them (as unsigned longs). The macro definitions for major and minor are only used when the system doesn't define these - as the code snipped you provided actually shows. Hence I see no problem here.

James Youngman <jay>
Project AdministratorIn charge of this item.
Mon 03 May 2004 10:02:55 AM UTC, comment #1:

Looking at linux/kdev_t.h, the device numbers exposed to the
user level still seems to use 8-bit major and minor numbers.
The filesystem level uses larger sizes, but the userland interface does not. Hence I can't test your proposed extension.

James Youngman <jay>
Project AdministratorIn charge of this item.
Thu 15 Jan 2004 09:13:44 AM UTC, original submission:

Hello,

I have some questions about device number extension.

In Linux kernel 2.6, device number will be extended from 16-bit to 32-bit. All utilities and libraries should make corresponding extension for this new feature in kernel 2.6.

I find that “findutils-4.1.7” uses structure dev_t and operates the device number as 16-bit.
------------------------------------------------------------------------------------------
1. lib/listfile.c line 160:

#ifdef major /* Might be defined in sys/types.h. */
#define HAVE_MAJOR
#endif
#ifndef HAVE_MAJOR
#define major(dev) (((dev) >> 8) & 0xff)
#define minor(dev) ((dev) & 0xff)
#endif

This is a backup for lost of system defined macro major and minor, but all of these operations
look dev_t as 16 bits instead of 32 bits, so they will call problem when actually use them.
------------------------------------------------------------------------------------------

Since I didn’t find any information about this aspect in homepage of this package, I wonder whether the latest version has completed the device number extension? If not, will it be completed in the future? And when?

Looking forward to answering.

Anonymous

 

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Follow 5 latest changes.

Date Changed By Updated Field Previous Value => Replaced By
Sun 21 Nov 2004 04:59:43 PM UTCjayStatusNone=>Invalid
  Assigned toNone=>jay
  Open/ClosedOpen=>Closed
Mon 03 May 2004 10:02:55 AM UTCjayCategoryNone=>find
  Severity3 - Normal=>2 - Minor

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