Groups > comp.os.linux.development.system > #465

"Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--'

Newsgroups	comp.os.linux.development.system
Date	2012-10-02 07:05 -0700
Message-ID	<20de89c1-dcb3-42b2-b281-d22af2035db5@googlegroups.com> (permalink)
Subject	"Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--'
From	Alex Vinokur <alex.vinokur@gmail.com>

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Hi,

Could anybody explain why we have 'Permission denied' here?

Thanks



> uname -a
Linux machine1 2.6.32-279.el6.x86_64 #1 SMP Wed Jun 13 18:24:36 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux

> id
uid=75308(user1) gid=100(users) groups=100(users)

> ps -ef | grep 25796
root     25796 15752  0 15:11 pts/30   00:00:00 ssh -l root machine2
user1    26737 13908  0 15:19 pts/23   00:00:00 grep 25796

> ls -ld /proc/25796/maps
-r--r--r-- 1 root root 0 Oct  2 15:12 /proc/25796/maps

> cat /proc/25796/maps
cat: /proc/25796/maps: Permission denied

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"Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Alex Vinokur <alex.vinokur@gmail.com> - 2012-10-02 07:05 -0700
  Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2012-10-02 15:09 +0100
    Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Alex Vinokur <alex.vinokur@gmail.com> - 2012-10-02 07:20 -0700
      Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2012-10-02 20:14 +0300
        Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Alex Vinokur <alex.vinokur@gmail.com> - 2012-10-02 10:46 -0700
          Re: "Permission denied" while reading file /proc/<pid>/maps with   permissions '-r--r--r--' Josef Moellers <josef.moellers@invalid.invalid> - 2012-10-03 12:39 +0200
            Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-10-11 01:53 +0300
            Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Phil Carmody <thefatphil_demunged@yahoo.co.uk> - 2012-10-11 01:58 +0300
      Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2012-10-02 20:08 +0100
        Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' pacman@kosh.dhis.org (Alan Curry) - 2012-10-02 21:44 +0000
          Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Alex Vinokur <alex.vinokur@gmail.com> - 2012-10-02 23:16 -0700
          Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2012-10-03 09:35 +0100
  Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' a.c.kalker@gmail.com - 2013-07-14 06:08 -0700
    Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-07-14 17:08 +0000
    Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-15 02:41 -0600
      Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-07-15 10:06 +0000
    Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2013-07-15 10:05 +0100
      Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-15 03:51 -0600
        Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2013-07-15 11:32 +0100
          Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-16 03:50 -0600
            Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Richard Kettlewell <rjk@greenend.org.uk> - 2013-07-16 11:29 +0100
              Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-16 04:53 -0600
                Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Rainer Weikusat <rweikusat@mssgmbh.com> - 2013-07-16 13:06 +0100
                Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-17 01:52 -0600
            Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' Jorgen Grahn <grahn+nntp@snipabacken.se> - 2013-07-16 19:04 +0000
              Re: "Permission denied" while reading file /proc/<pid>/maps with permissions '-r--r--r--' crankypuss <crankypuss@nomail.invalid> - 2013-07-17 02:21 -0600

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