What caused /tmp permission changed from 1777 to 755 after rebooting?

[h...@ucdavis.edu]

Hi, All,
I have a Sun machine running Solaris 2.6. I noticed that /tmp
permission changed from 1777 to 755 (also ownership changed from sys to
root) each time the machine is rebooted. I lookup around the start up
and shutdown scripts, but could not find out who causes this.
Does anybody have any idea where to find the bad guy?
Thanks,

Christine

[NC]

Start-up scripts would be a good start...

h...@ucdavis.edu wrote in message <38BC6248...@ucdavis.edu>...

[Hello World]

I'm not on the Sun system, it's a bit complicated to explain, but
here is how to fix it.

1_ Comment out the /tmp line in /etc/vfstab
2_ Shut the system down
3_ Reboot in single user mode
4_ Change mode to 1777
5_ Uncomment the /tmp in /etc/vfstab
6_ Kick the system to go in multiuser mode

That did the tricks for me. Hope this helps.

--

h...@ucdavis.edu wrote:
>
> Hi, All,
> I have a Sun machine running Solaris 2.6. I noticed that /tmp
> permission changed from 1777 to 755 (also ownership changed from sys to
> root) each time the machine is rebooted. I lookup around the start up
> and shutdown scripts, but could not find out who causes this.
> Does anybody have any idea where to find the bad guy?
> Thanks,
>
> Christine

--

- My valid address is: vi...@oz.net

* Please remove "NO-SPAM" in my address to reply. *

[satish_...@my-deja.com]

In article <89l5jr$s5s$0...@216.39.141.224>,

Hey. The permission after reboot has to be 755 as this will safeguard your
temprory files from being deleted by some programs. So leave it that way.

Sent via Deja.com http://www.deja.com/
Before you buy.

[Tony Walton]

satish_...@my-deja.com wrote:
>
> In article <89l5jr$s5s$0...@216.39.141.224>,
> Hello World <vi...@NO-SPAM.oz.net> wrote:
>
> > h...@ucdavis.edu wrote:
> > >
> > > Hi, All,
> > > I have a Sun machine running Solaris 2.6. I noticed that /tmp
> > > permission changed from 1777 to 755 (also ownership changed from sys to
> > > root) each time the machine is rebooted. I lookup around the start up
> > > and shutdown scripts, but could not find out who causes this.
> > > Does anybody have any idea where to find the bad guy?
> > > Thanks,
> > >
> > > Christine

> > I'm not on the Sun system, it's a bit complicated to explain, but
> > here is how to fix it.
> >
> > 1_ Comment out the /tmp line in /etc/vfstab
> > 2_ Shut the system down
> > 3_ Reboot in single user mode
> > 4_ Change mode to 1777
> > 5_ Uncomment the /tmp in /etc/vfstab
> > 6_ Kick the system to go in multiuser mode
> >
> > That did the tricks for me. Hope this helps.
> >
>

> Hey. The permission after reboot has to be 755 as this will safeguard your
> temprory files from being deleted by some programs. So leave it that way.

Not on /tmp they shouldn't. The mode suggested by "Hello World" (1777)
is correct.
Otherwise how on earth do you expect user processes to write to /tmp ?

Tony

[Chuck Douglas]

satish_...@my-deja.com wrote:
>
> In article <89l5jr$s5s$0...@216.39.141.224>,
> Hello World <vi...@NO-SPAM.oz.net> wrote:
> >
> > I'm not on the Sun system, it's a bit complicated to explain, but
> > here is how to fix it.
> >
> > 1_ Comment out the /tmp line in /etc/vfstab
> > 2_ Shut the system down
> > 3_ Reboot in single user mode
> > 4_ Change mode to 1777
> > 5_ Uncomment the /tmp in /etc/vfstab
> > 6_ Kick the system to go in multiuser mode
> >
> > That did the tricks for me. Hope this helps.
> >

> > --

> >
> > h...@ucdavis.edu wrote:
> > >
> > > Hi, All,
> > > I have a Sun machine running Solaris 2.6. I noticed that /tmp
> > > permission changed from 1777 to 755 (also ownership changed from sys to
> > > root) each time the machine is rebooted. I lookup around the start up
> > > and shutdown scripts, but could not find out who causes this.
> > > Does anybody have any idea where to find the bad guy?
> > > Thanks,
> > >
> > > Christine
> >

> > --
> >
> > - My valid address is: vi...@oz.net
> >
> > * Please remove "NO-SPAM" in my address to reply. *
> >
>

> Hey. The permission after reboot has to be 755 as this will safeguard your
> temprory files from being deleted by some programs. So leave it that way.
>

Leaving it that was is NOT what you want. There are programmes that
create lock files in the /tmp directory and if the permission is 755, they
will not be able to delete new lock files to start up.

In Solaris, the permissions on the /tmp should be 1777. Go check it out
for yourself.

--
Chuck （茶気） Douglas -- chuc...@gol.com
"I don't pretend I have all the answers/Just the obvious ones"
--_Backbone_ by Baby Animals
Homepage down until further notice.