08-04-2013
Quote:
Originally Posted by
unSpawn
On systems that support MAC you may be able to modify a policy to deny writes to files, denying policy alteration and denying reboot (convoluted).
can you explain more?how can i do this?
Quote:
On file systems that support it you can set the immutable bit (weak). On file systems that do not support extended attributes you could mount another /root directory over it with the ro flag set (even weaker option).
*Do note anyone with root privileges can undo things. Also note immutable files are of no use if the real cause of the problem should not be addressed through the use of technology (as in PEBCAK).
how about scrub command? is it possible to set it to files i need to prevent any changes by other ?
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reboot(2) System Calls Manual reboot(2)
NAME
reboot - boot the system
SYNOPSIS
DESCRIPTION
causes the system to reboot. howto is a mask of reboot options (see specified as follows:
A file system sync is performed (unless
is set) and the processor is rebooted from the default device and file.
The processor is simply halted.
A sync of the file system is performed unless the flag is set. should be used with caution.
On systems with cellular architecture, all cells in the partition are
rebooted in order to reconfigure the stable complex configuration data. On systems with non-cellular architec-
ture, the default is A sync of the file system is performed unless the flag is set.
Shut down the system firmware to a "ready to reconfigure" state and do not
reboot. This option can be used only in combination with
A sync of the file system is not performed.
Unless the flag has been specified, reboot(2) unmounts all mounted file systems and marks them clean so that it will not be necessary to
run fsck(1M) on these file systems when the system reboots.
Only users with appropriate privileges can reboot a machine.
RETURN VALUE
If successful, this call never returns. Otherwise, a -1 is returned and is set to indicate the error.
ERRORS
fails if this condition is encountered:
[EPERM] The effective user ID of the caller is not a user with appropriate privileges.
DEPENDENCIES
The default file and device for is on the current root device.
AUTHOR
was developed by HP and the University of California, Berkeley.
SEE ALSO
reboot(1M), privileges(5).
reboot(2)