On Sat, Jun 28, 2008 at 6:13 PM, Ivaylo Mateev <[EMAIL PROTECTED]> wrote: > Hi, > > I think I found a bug. > > [EMAIL PROTECTED] /usr/home/strato]$ sudo sysctl kern.securelevel > kern.securelevel: 2 > [EMAIL PROTECTED] /usr/home/strato]$ kgdb > kgdb: /dev/mem: Permission denied > [EMAIL PROTECTED] /usr/home/strato]$ sudo kgdb > [GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: > Undefined symbol "ps_pglobal_lookup"] > GNU gdb 6.1.1 [FreeBSD] > > I am running in securelevel 2. That means nithing can have direct access > to /dev/mem, acording to man security: > > 1 Secure mode - the system immutable and system append-only flags may > not be turned off; disks for mounted file systems, /dev/mem and > /dev/kmem may not be opened for writing; /dev/io (if your platform > has it) may not be opened at all; kernel modules (see kld(4)) may > not be loaded or unloaded. > > 2 Highly secure mode - same as secure mode, plus disks may not be > opened for writing (except by mount(2)) whether mounted or not. > This level precludes tampering with file systems by unmounting > them, but also inhibits running newfs(8) while the system is multi- > user. > > So is this a bug or I am just to stupid?
Same thing with su? In some situations sudo doesn't operate under 100% root-credentials. -Garrett _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
