su command failing on RHEL5

[Sanjay Kumar]

Hi,

 

su command is failing with below error on RHEL5. We are using
coreutils-5.97-14.el5

 

[r...@omvm6 ~]# su --version

su (GNU coreutils) 5.97

 

 

 

[r...@omvm6 ~]# su poo -c cat /dev/tty

cat: /dev/tty: No such device or address

 

 

strace is showing below:

.

.

fstat(3, {st_mode=S_IFREG|0644, st_size=56426016, ...}) = 0

mmap(NULL, 56426016, PROT_READ, MAP_PRIVATE, 3, 0) = 0x2b37c6dff000

close(3)= 0

fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0

open(/dev/tty, O_RDONLY)  = -1 ENXIO (No such device or
address)

write(2, cat: , 5cat: )= 5

write(2, /dev/tty, 8/dev/tty) = 8

open(/usr/share/locale/locale.alias, O_RDONLY) = 3

fstat(3, {st_mode=S_IFREG|0644, st_size=2528, ...}) = 0

.

.

.

 

 

 

The above command is working on RHEL4 with coreutils-5.2.1-31.7

 

Please let us know the fix available or not.

 

Thanks  Regards,

 

Sanjay Kumar

Sr. Software Engg

Symantec Corporation 
www.symantec.com http://www.symantec.com/ 



Office: (020) 4075 4020

Mobile: 919881061153

sanjay_kum...@symantec.com

 

 



 

 

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RE: su command failing on RHEL5

[Sanjay Kumar]

That I have already checked.

[r...@omvm6 ~]# ls -ld /dev/tty
crw-rw-rw- 1 root tty 5, 0 Jun 13 00:32 /dev/tty
[r...@omvm6 ~]#

I have written, that after copying su executable from RHEL4 on RHEL5, it
is working. There must be some issue with coreutils-5.97. 

Thanks  Regards,
 
Sanjay Kumar
Sr. Software Engg
Symantec Corporation 
www.symantec.com


Office: (020) 4075 4020
Mobile: 919881061153
sanjay_kum...@symantec.com
 



 

-Original Message-
From: Bob Proulx [mailto:b...@proulx.com] 
Sent: Friday, June 12, 2009 5:43 PM
To: Sanjay Kumar
Cc: bug-coreutils@gnu.org
Subject: Re: su command failing on RHEL5

Sanjay Kumar wrote:
 [r...@omvm6 ~]# su poo -c cat /dev/tty
 cat: /dev/tty: No such device or address
 ...
 strace is showing below:
 open(/dev/tty, O_RDONLY)  = -1 ENXIO (No such device or
address)

The su command appears to be working properly.  The problem shown
above is that your system is missing the /dev/tty device node.
Something has apparently removed it!  You can confirm this by running
the following.

  ls -ld /dev/tty

You could repair your system by creating that device node.  See the
'mknod' documentation for how.

Bob


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