Date: Wed, 25 Jul 2007 19:03:37 +0400 From: Boris Samorodov <bsam@ipt.ru> To: Pawel Jakub Dawidek <pjd@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: mount_nullfs inside a jail Message-ID: <76240598@srv.sem.ipt.ru> In-Reply-To: <20070725145031.GJ12473@garage.freebsd.pl> (Pawel Jakub Dawidek's message of "Wed\, 25 Jul 2007 16\:50\:31 %2B0200") References: <97732929@srv.sem.ipt.ru> <20070723133333.GF5456@garage.freebsd.pl> <78011660@srv.sem.ipt.ru> <20070724144549.GA12473@garage.freebsd.pl> <08401633@srv.sem.ipt.ru> <20070725145031.GJ12473@garage.freebsd.pl>
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On Wed, 25 Jul 2007 16:50:31 +0200 Pawel Jakub Dawidek wrote: > On Wed, Jul 25, 2007 at 06:46:22PM +0400, Boris Samorodov wrote: > > On Tue, 24 Jul 2007 16:45:49 +0200 Pawel Jakub Dawidek wrote: > > > On Tue, Jul 24, 2007 at 06:03:47PM +0400, Boris Samorodov wrote: > > > > On Mon, 23 Jul 2007 15:33:33 +0200 Pawel Jakub Dawidek wrote: > > > > > > > As you can see, nullfs doesn't have 'jail' flag. The only jail-friendly > > > > > file system currently is ZFS. Nullfs is a good candidate for a > > > > > jail-friendly file system, but is not marked as such yet. > > > > > > > > Does somebody know if only a flag is missing or not? > > > > > You may try changing the line in /sys/fs/nullfs/null_vfsops.c from: > > > > > VFS_SET(null_vfsops, nullfs, VFCF_LOOPBACK); > > > > > to: > > > > > VFS_SET(null_vfsops, nullfs, VFCF_LOOPBACK | VFCF_JAIL); > > > > This didn't help: > > ----- > > btest# sysctl security.jail > > security.jail.jailed: 1 > > security.jail.mount_allowed: 1 > > security.jail.chflags_allowed: 1 > > security.jail.allow_raw_sockets: 0 > > security.jail.enforce_statfs: 2 > > security.jail.sysvipc_allowed: 1 > > security.jail.socket_unixiproute_only: 1 > > security.jail.set_hostname_allowed: 1 > > btest# lsvfs > > Filesystem Refs Flags > > -------------------------------- ----- --------------- > > ufs 6 > > nfs 0 network > > procfs 0 synthetic > > devfs 3 synthetic > > ntfs 0 > > msdosfs 0 > > nfs4 0 network > > nullfs 1 loopback, jail > > cd9660 0 read-only > > btest# df > > Filesystem 1K-blocks Used Avail Capacity Mounted on > > /dev/da0s1d 945804208 22136782 848003090 3% / > > btest# mount /usr/ports/distfiles /mnt > > mount: /usr/ports/distfiles : Operation not permitted > mount_nullfs? Ops!!! (i need some coffee) My bad... Mounting works good but: ----- btest# umount /mnt umount: unmount of [restricted] failed: Invalid argument ----- WBR -- Boris Samorodov (bsam) Research Engineer, http://www.ipt.ru Telephone & Internet SP FreeBSD committer, http://www.FreeBSD.org The Power To Serve
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