[Bug libc/10166] New: grantpt() does can not be used for devpts

[Bug libc/10166] New: grantpt() does can not be used for devpts

[yjwei at cn dot fujitsu dot com]

On my Fedora11Beta box, the grantpt() does can not be used for devpts.
In RHEL system, the /etc/fstab has this configure, it has no problem.
  devpts /dev/pts devpts gid=5,mode=620 0 0
But in Fedora11Beta this line changed to:
  devpts /dev/pts devpts defaults 0 0

I looked into the kernel source, the mode of devpts has the default value of 
600, not 620. So, does not change the mode of devpts is not correct.

This is found by LTP - testcases/kernel/pty/pty01.c

-- 
           Summary: grantpt() does can not be used for devpts
           Product: glibc
           Version: 2.10
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: drepper at redhat dot com
        ReportedBy: yjwei at cn dot fujitsu dot com
                CC: glibc-bugs at sources dot redhat dot com


http://sourceware.org/bugzilla/show_bug.cgi?id=10166

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[Bug libc/10166] grantpt() does can not be used for devpts

[yjwei at cn dot fujitsu dot com]

------- Additional Comments From yjwei at cn dot fujitsu dot com  2009-05-18 04:03 -------
Created an attachment (id=3942)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=3942&action=view)
patch for glibc


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http://sourceware.org/bugzilla/show_bug.cgi?id=10166

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[Bug libc/10166] grantpt() does can not be used for devpts

[yjwei at cn dot fujitsu dot com]

------- Additional Comments From yjwei at cn dot fujitsu dot com  2009-06-05 08:16 -------
I had look the manpage of grantpt():

#man 3 grantpt

DESCRIPTION
       The grantpt() function changes the mode and owner of the slave
pseudo-terminal device (pty) corresponding to the master pty referred
to by fd.  The user ID of the slave is set to the real UID of the
calling process.  The group ID is set to an unspecified value (e.g.
tty).  The mode of the slave is set to 0620 (crw--w----).

So there is no reason for glibc does not change the mode of devpts,
since the default mode of devpts is 600. Isn't it?


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http://sourceware.org/bugzilla/show_bug.cgi?id=10166

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[Bug libc/10166] grantpt() does can not be used for devpts

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2009-06-16 05:59 -------
The patch is hurting correctly configured systems.  I've checked in a different
patch.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=10166

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[Bug libc/10166] grantpt() does can not be used for devpts

[fweimer at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=10166

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-

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