Date: Wed, 28 Apr 1999 04:38:56 -0700 (PDT) From: Poul-Henning Kamp <phk@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/usr.sbin Makefile src/sys/conf files src/sys/gnu/ext2fs ext2_vnops.c src/sys/kern kern_jail.c init_main.c init_sysent.c kern_exit.c kern_fork.c kern_ktrace.c kern_mib.c kern_proc.c kern_prot.c kern_resource.c kern_sig.c ... Message-ID: <199904281138.EAA16129@freefall.freebsd.org>
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phk 1999/04/28 04:38:54 PDT
Modified files:
usr.sbin Makefile
sys/conf files
sys/gnu/ext2fs ext2_vnops.c
sys/kern init_main.c init_sysent.c kern_exit.c
kern_fork.c kern_ktrace.c kern_mib.c
kern_proc.c kern_prot.c kern_resource.c
kern_sig.c kern_sysctl.c kern_xxx.c
sys_process.c syscalls.c uipc_usrreq.c
vfs_syscalls.c vfs_vnops.c
sys/miscfs/devfs devfs_vnops.c
sys/miscfs/procfs procfs.h procfs_status.c procfs_vnops.c
sys/msdosfs msdosfs_vnops.c
sys/net bpf.c if.c if.h rtsock.c
sys/netinet in.h in_pcb.c in_pcb.h tcp_subr.c
tcp_usrreq.c udp_usrreq.c
sys/nfs nfs_serv.c
sys/sys proc.h syscall-hide.h syscall.h
syscall.mk sysctl.h sysproto.h ucred.h
unpcb.h
sys/ufs/ufs ufs_vfsops.c ufs_vnops.c
bin/ps print.c ps.1
lib/libc/sys Makefile.inc
share/man/man9 suser.9
Added files:
sys/kern kern_jail.c
sys/sys jail.h
usr.sbin/jail Makefile jail.8 jail.c
lib/libc/sys jail.2
Log:
This Implements the mumbled about "Jail" feature.
This is a seriously beefed up chroot kind of thing. The process
is jailed along the same lines as a chroot does it, but with
additional tough restrictions imposed on what the superuser can do.
For all I know, it is safe to hand over the root bit inside a
prison to the customer living in that prison, this is what
it was developed for in fact: "real virtual servers".
Each prison has an ip number associated with it, which all IP
communications will be coerced to use and each prison has its own
hostname.
Needless to say, you need more RAM this way, but the advantage is
that each customer can run their own particular version of apache
and not stomp on the toes of their neighbors.
It generally does what one would expect, but setting up a jail
still takes a little knowledge.
A few notes:
I have no scripts for setting up a jail, don't ask me for them.
The IP number should be an alias on one of the interfaces.
mount a /proc in each jail, it will make ps more useable.
/proc/<pid>/status tells the hostname of the prison for
jailed processes.
Quotas are only sensible if you have a mountpoint per prison.
There are no privisions for stopping resource-hogging.
Some "#ifdef INET" and similar may be missing (send patches!)
If somebody wants to take it from here and develop it into
more of a "virtual machine" they should be most welcome!
Tools, comments, patches & documentation most welcome.
Have fun...
Sponsored by: http://www.rndassociates.com/
Run for almost a year by: http://www.servetheweb.com/
Revision Changes Path
1.153 +2 -1 src/usr.sbin/Makefile
1.211 +1 -0 src/sys/conf/files
1.46 +1 -1 src/sys/gnu/ext2fs/ext2_vnops.c
1.115 +4 -1 src/sys/kern/init_main.c
1.65 +2 -1 src/sys/kern/init_sysent.c
1.80 +8 -1 src/sys/kern/kern_exit.c
1.61 +7 -1 src/sys/kern/kern_fork.c
1.26 +3 -1 src/sys/kern/kern_ktrace.c
1.19 +23 -3 src/sys/kern/kern_mib.c
1.47 +6 -1 src/sys/kern/kern_proc.c
1.47 +27 -19 src/sys/kern/kern_prot.c
1.48 +2 -2 src/sys/kern/kern_resource.c
1.55 +3 -3 src/sys/kern/kern_sig.c
1.88 +3 -2 src/sys/kern/kern_sysctl.c
1.30 +2 -2 src/sys/kern/kern_xxx.c
1.45 +3 -1 src/sys/kern/sys_process.c
1.58 +2 -1 src/sys/kern/syscalls.c
1.43 +13 -2 src/sys/kern/uipc_usrreq.c
1.123 +23 -7 src/sys/kern/vfs_syscalls.c
1.68 +2 -2 src/sys/kern/vfs_vnops.c
1.72 +7 -7 src/sys/miscfs/devfs/devfs_vnops.c
1.23 +3 -2 src/sys/miscfs/procfs/procfs.h
1.13 +7 -1 src/sys/miscfs/procfs/procfs_status.c
1.66 +12 -1 src/sys/miscfs/procfs/procfs_vnops.c
1.83 +5 -5 src/sys/msdosfs/msdosfs_vnops.c
1.49 +6 -3 src/sys/net/bpf.c
1.70 +17 -12 src/sys/net/if.c
1.51 +2 -1 src/sys/net/if.h
1.39 +3 -1 src/sys/net/rtsock.c
1.40 +4 -1 src/sys/netinet/in.h
1.49 +24 -6 src/sys/netinet/in_pcb.c
1.27 +2 -1 src/sys/netinet/in_pcb.h
1.53 +2 -2 src/sys/netinet/tcp_subr.c
1.42 +3 -1 src/sys/netinet/tcp_usrreq.c
1.50 +8 -2 src/sys/netinet/udp_usrreq.c
1.75 +3 -3 src/sys/nfs/nfs_serv.c
1.81 +16 -1 src/sys/sys/proc.h
1.52 +2 -1 src/sys/sys/syscall-hide.h
1.56 +3 -2 src/sys/sys/syscall.h
1.11 +3 -2 src/sys/sys/syscall.mk
1.73 +2 -1 src/sys/sys/sysctl.h
1.46 +5 -1 src/sys/sys/sysproto.h
1.12 +2 -3 src/sys/sys/ucred.h
1.8 +2 -1 src/sys/sys/unpcb.h
1.15 +2 -2 src/sys/ufs/ufs/ufs_vfsops.c
1.113 +6 -6 src/sys/ufs/ufs/ufs_vnops.c
1.35 +3 -1 src/bin/ps/print.c
1.21 +6 -1 src/bin/ps/ps.1
1.62 +2 -2 src/lib/libc/sys/Makefile.inc
1.6 +45 -10 src/share/man/man9/suser.9
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