Re: resource limits?
Fork bomb not work..
But ........
while (1) malloc(1000);
You must limit memoryuse ....
Dariush Pietrzak wrote:
>
> > > root$ man ulimit
> > Isn't this a bash shell level thing?
> > % ulimit
> > ulimit: Command not found.
>
> > So what happens when you have users using tcsh? ulimit is not available in
> limit [-h] [resource [maximum-use]]
>
> > tcsh. Can't users also change their ulimit settings? What about preventing
> they can only lower limits enforced by admin.
>
> > fork bombs & such?
> this is limit's output at one of our university servers:
> >limit
> cputime unlimited
> filesize unlimited
> datasize unlimited
> stacksize 8192 kbytes
> coredumpsize 1000000 kbytes
> memoryuse unlimited
> descriptors 256
> memorylocked unlimited
> maxproc 256
> openfiles 256
>
> fork bomb won't do much with limited maxproc etc..
>
> under Debian GNU/Linux you set it in /etc/login.defs:
>
> #
> # Login configuration initializations:
> #
> # ERASECHAR Terminal ERASE character ('\010' = backspace).
> # KILLCHAR Terminal KILL character ('\025' = CTRL/U).
> # UMASK Default "umask" value.
> # ULIMIT Default "ulimit" value.
> #
> # The ERASECHAR and KILLCHAR are used only on System V machines.
> # The ULIMIT is used only if the system supports it.
> # (now it works with setrlimit too; ulimit is in 512-byte units)
> #
> # Prefix these values with "0" to get octal, "0x" to get hexadecimal.
> #
> ERASECHAR 0177
> KILLCHAR 025
> UMASK 002
> ULIMIT 2097152
> # ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> #
>
> regards,
> Eyck
>
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