original_kernel/include/linux
Venkat Yekkirala 5b368e61c2 IPsec: correct semantics for SELinux policy matching
Currently when an IPSec policy rule doesn't specify a security
context, it is assumed to be "unlabeled" by SELinux, and so
the IPSec policy rule fails to match to a flow that it would
otherwise match to, unless one has explicitly added an SELinux
policy rule allowing the flow to "polmatch" to the "unlabeled"
IPSec policy rules. In the absence of such an explicitly added
SELinux policy rule, the IPSec policy rule fails to match and
so the packet(s) flow in clear text without the otherwise applicable
xfrm(s) applied.

The above SELinux behavior violates the SELinux security notion of
"deny by default" which should actually translate to "encrypt by
default" in the above case.

This was first reported by Evgeniy Polyakov and the way James Morris
was seeing the problem was when connecting via IPsec to a
confined service on an SELinux box (vsftpd), which did not have the
appropriate SELinux policy permissions to send packets via IPsec.

With this patch applied, SELinux "polmatching" of flows Vs. IPSec
policy rules will only come into play when there's a explicit context
specified for the IPSec policy rule (which also means there's corresponding
SELinux policy allowing appropriate domains/flows to polmatch to this context).

Secondly, when a security module is loaded (in this case, SELinux), the
security_xfrm_policy_lookup() hook can return errors other than access denied,
such as -EINVAL.  We were not handling that correctly, and in fact
inverting the return logic and propagating a false "ok" back up to
xfrm_lookup(), which then allowed packets to pass as if they were not
associated with an xfrm policy.

The solution for this is to first ensure that errno values are
correctly propagated all the way back up through the various call chains
from security_xfrm_policy_lookup(), and handled correctly.

Then, flow_cache_lookup() is modified, so that if the policy resolver
fails (typically a permission denied via the security module), the flow
cache entry is killed rather than having a null policy assigned (which
indicates that the packet can pass freely).  This also forces any future
lookups for the same flow to consult the security module (e.g. SELinux)
for current security policy (rather than, say, caching the error on the
flow cache entry).

This patch: Fix the selinux side of things.

This makes sure SELinux polmatching of flow contexts to IPSec policy
rules comes into play only when an explicit context is associated
with the IPSec policy rule.

Also, this no longer defaults the context of a socket policy to
the context of the socket since the "no explicit context" case
is now handled properly.

Signed-off-by: Venkat Yekkirala <vyekkirala@TrustedCS.com>
Signed-off-by: James Morris <jmorris@namei.org>
2006-10-11 23:59:37 -07:00
..
amba
byteorder
dvb
hdlc
isdn
lockd [PATCH] Convert lockd to use the newer mutex instead of the older semaphore 2006-10-04 07:55:19 -07:00
mmc [PATCH] mmc: multi sector write transfers 2006-10-06 08:53:41 -07:00
mtd
netfilter
netfilter_arp
netfilter_bridge
netfilter_ipv4
netfilter_ipv6
nfsd [PATCH] Fix linux/nfsd/const.h for make headers_check 2006-10-04 07:55:24 -07:00
raid
spi
sunrpc [PATCH] knfsd: tidy up up meaning of 'buffer size' in nfsd/sunrpc 2006-10-06 08:53:41 -07:00
tc_act
tc_ematch
usb IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
8250_pci.h
Kbuild [MIPS] Remove remaining reference to ite_gpio.h from Kbuild 2006-10-04 18:06:15 +01:00
a.out.h
ac97_codec.h [PATCH] The scheduled removal of some OSS drivers 2006-10-04 07:55:32 -07:00
acct.h
acpi.h
adb.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
adfs_fs.h
adfs_fs_i.h
adfs_fs_sb.h
aer.h
affs_hardblocks.h
agp_backend.h
agpgart.h
aio.h
aio_abi.h
amifd.h
amifdreg.h
amigaffs.h
apm_bios.h
arcdevice.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
arcfb.h
ata.h
atalk.h
atm.h
atm_eni.h
atm_he.h
atm_idt77105.h
atm_nicstar.h
atm_suni.h
atm_tcp.h
atm_zatm.h
atmapi.h
atmarp.h
atmbr2684.h
atmclip.h
atmdev.h
atmioc.h
atmlec.h
atmmpc.h
atmppp.h
atmsap.h
atmsvc.h
attribute_container.h
audit.h
auto_fs.h
auto_fs4.h
auxvec.h
awe_voice.h
ax25.h
b1lli.h
b1pcmcia.h
backing-dev.h
backlight.h
baycom.h
bcd.h
bfs_fs.h
binfmts.h
bio.h [PATCH] Document bi_sector and sector_t 2006-10-04 19:32:09 +02:00
bit_spinlock.h
bitmap.h [PATCH] bitmap: parse input from kernel and user buffers 2006-10-11 11:14:22 -07:00
bitops.h
blkdev.h [PATCH] helper function for retrieving scsi_cmd given host based block layer tag 2006-10-04 19:32:09 +02:00
blkpg.h
blktrace_api.h
blockgroup_lock.h
bootmem.h
bpqether.h
buffer_head.h
cache.h
calc64.h
capability.h
capi.h
carta_random32.h [PATCH] Add carta_random32() library routine 2006-10-11 11:14:21 -07:00
cciss_ioctl.h
cd1400.h
cdev.h
cdk.h
cdrom.h [PATCH] cdrom: add endianness annotations 2006-10-10 16:15:33 -07:00
chio.h
circ_buf.h
clk.h
clocksource.h
cm4000_cs.h
cn_proc.h
cobalt-nvram.h
coda.h
coda_cache.h
coda_fs_i.h
coda_linux.h
coda_proc.h
coda_psdev.h
coff.h
com20020.h
compat.h [PATCH] __user annotations: futex 2006-10-10 15:37:22 -07:00
compat_ioctl.h [PATCH] 32-bit compatibility HDIO IOCTLs 2006-10-11 11:14:22 -07:00
compiler-gcc.h
compiler-gcc3.h
compiler-gcc4.h
compiler-intel.h
compiler.h
completion.h
comstats.h
concap.h
configfs.h
connector.h
console.h
console_struct.h
consolemap.h
cpu.h
cpufreq.h
cpumask.h [PATCH] bitmap: parse input from kernel and user buffers 2006-10-11 11:14:22 -07:00
cpuset.h
cramfs_fs.h
cramfs_fs_sb.h
crash_dump.h
crc-ccitt.h
crc16.h
crc32.h
crc32c.h
crypto.h
cryptohash.h
ctype.h
cuda.h
cyclades.h
cyclomx.h
cycx_cfm.h
cycx_drv.h
cycx_x25.h
dcache.h [PATCH] VFS: Destroy the dentries contributed by a superblock on unmounting 2006-10-11 11:14:25 -07:00
dccp.h [PATCH] dccp __user annotations 2006-10-10 15:37:20 -07:00
dcookies.h
debug_locks.h
debugfs.h
delay.h
delayacct.h
device-mapper.h
device.h
devpts_fs.h
dio.h
dirent.h
divert.h
dlm.h
dlm_device.h
dm-ioctl.h
dm9000.h
dma-mapping.h
dmaengine.h
dmapool.h
dmi.h
dn.h
dnotify.h
dqblk_v1.h
dqblk_v2.h
dqblk_xfs.h
ds1286.h
ds1742rtc.h
ds17287rtc.h
dtlk.h
edd.h
efi.h
efs_dir.h
efs_fs.h
efs_fs_i.h
efs_fs_sb.h
efs_vh.h
eisa.h
elevator.h
elf-em.h
elf-fdpic.h
elf.h
elfcore.h
elfnote.h
err.h
errno.h
errqueue.h
etherdevice.h
ethtool.h
eventpoll.h
ext2_fs.h
ext2_fs_sb.h
ext3_fs.h
ext3_fs_i.h
ext3_fs_sb.h
ext3_jbd.h
ext4_fs.h [PATCH] ext4 uninline ext4_get_group_no_and_offset() 2006-10-11 11:14:18 -07:00
ext4_fs_extents.h [PATCH] ext4: clean up comments in ext4-extents patch 2006-10-11 11:14:16 -07:00
ext4_fs_i.h [PATCH] ext4: blk_type from sector_t to unsigned long long 2006-10-11 11:14:18 -07:00
ext4_fs_sb.h [PATCH] ext4: allow larger descriptor size 2006-10-11 11:14:18 -07:00
ext4_jbd2.h [PATCH] jbd2: sector_t conversion 2006-10-11 11:14:17 -07:00
fadvise.h
fb.h
fcdevice.h
fcntl.h
fd.h
fd1772.h
fddidevice.h
fdreg.h
fib_rules.h
file.h
filter.h
firmware.h
flat.h
font.h
fs.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6 2006-10-04 09:06:16 -07:00
fs_enet_pd.h
fs_struct.h
fs_uart_pd.h
fsl_devices.h
fsnotify.h
ftape-header-segment.h
ftape-vendors.h
ftape.h
fuse.h
futex.h
gameport.h
gen_stats.h
genalloc.h
generic_acl.h
generic_serial.h
genetlink.h
genhd.h
getcpu.h
gfp.h
gfs2_ondisk.h
gigaset_dev.h
hardirq.h [PATCH] genirq: irq: generalize the check for HARDIRQ_BITS 2006-10-04 07:55:28 -07:00
harrier_defs.h
hash.h
hayesesp.h
hdlc.h
hdlcdrv.h
hdpu_features.h
hdreg.h
hdsmart.h
hiddev.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
highmem.h
highuid.h
hil.h
hil_mlc.h
hippidevice.h
hp_sdc.h
hpet.h
hrtimer.h
htirq.h [PATCH] htirq: tidy up the htirq code 2006-10-04 07:55:30 -07:00
hugetlb.h [PATCH] hugetlb: fix linked list corruption in unmap_hugepage_range() 2006-10-11 11:14:15 -07:00
hw_random.h
hwmon-sysfs.h
hwmon-vid.h
hwmon.h
hysdn_if.h
i2c-algo-bit.h
i2c-algo-ite.h
i2c-algo-pca.h
i2c-algo-pcf.h
i2c-algo-sgi.h
i2c-dev.h
i2c-id.h
i2c-isa.h
i2c-ocores.h
i2c-pxa.h
i2c.h
i2o-dev.h
i2o.h
i8k.h
ibmtr.h
icmp.h
icmpv6.h
ide.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
idr.h
if.h
if_addr.h
if_arcnet.h
if_arp.h
if_bonding.h
if_bridge.h
if_cablemodem.h
if_ec.h
if_eql.h
if_ether.h
if_fc.h
if_fddi.h
if_frad.h
if_hippi.h
if_infiniband.h
if_link.h
if_ltalk.h
if_packet.h
if_plip.h
if_ppp.h
if_pppox.h
if_shaper.h
if_slip.h
if_strip.h
if_tr.h
if_tun.h
if_tunnel.h
if_vlan.h [PATCH] Finish annotations of struct vlan_ethhdr 2006-10-10 16:15:34 -07:00
if_wanpipe.h
if_wanpipe_common.h
igmp.h
in.h
in6.h
in_route.h
inet.h
inet_diag.h
inetdevice.h
init.h
init_task.h
initrd.h
inotify.h
input.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
interrupt.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
io.h [PATCH] Consolidate check_signature 2006-10-11 11:14:23 -07:00
ioc3.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
ioc4.h [PATCH] fix misannotation in ioc4.h 2006-10-10 15:37:22 -07:00
ioctl.h
ioctl32.h
ioport.h
ioprio.h
ip.h
ip6_tunnel.h
ip_mp_alg.h
ipc.h
ipmi.h
ipmi_msgdefs.h
ipmi_smi.h
ipsec.h
ipv6.h
ipv6_route.h
ipx.h
irda.h
irq.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
irq_cpustat.h
irqflags.h
irqreturn.h
isa.h
isapnp.h
isdn.h
isdn_divertif.h
isdn_ppp.h
isdnif.h
isicom.h
iso_fs.h
istallion.h [PATCH] trivial iomem annotations: istallion 2006-10-10 15:37:22 -07:00
ixjuser.h
jbd.h
jbd2.h [PATCH] jbd2: switch blks_type from sector_t to ull 2006-10-11 11:14:18 -07:00
jffs.h
jffs2.h
jhash.h
jiffies.h
journal-head.h
joystick.h
kallsyms.h
kbd_diacr.h
kbd_kern.h
kd.h
kdev_t.h
kernel.h
kernel_stat.h
kernelcapi.h
kexec.h
key-ui.h
key.h
keyboard.h
keyctl.h
kfifo.h
klist.h
kmalloc_sizes.h
kmod.h
kobj_map.h
kobject.h
kprobes.h
kref.h
kthread.h
ktime.h
lapb.h
latency.h
lcd.h
leds.h
libata.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
libps2.h
license.h
limits.h
linkage.h
linux_logo.h
list.h
llc.h
lm_interface.h
lock_dlm_plock.h
lockdep.h
loop.h
lp.h
m41t00.h
m48t86.h
magic.h [PATCH] ext4: enable building of ext4 2006-10-11 11:14:15 -07:00
major.h
matroxfb.h
mbcache.h
mc6821.h
mc146818rtc.h
mca-legacy.h
mca.h
memory.h
memory_hotplug.h
mempolicy.h
mempool.h
meye.h
migrate.h
mii.h
minix_fs.h
miscdevice.h
mm.h [PATCH] mm: locks_freed fix 2006-10-11 11:14:19 -07:00
mm_inline.h
mm_types.h
mman.h
mmtimer.h
mmzone.h
mod_devicetable.h
module.h [PATCH] fix Module taint flags listing in Oops/panic 2006-10-11 11:14:21 -07:00
moduleloader.h
moduleparam.h
mount.h
mpage.h
mqueue.h
mroute.h
msdos_fs.h
msg.h
msi.h [PATCH] msi: refactor and move the msi irq_chip into the arch code 2006-10-04 07:55:29 -07:00
mtio.h
mutex-debug.h
mutex.h
mv643xx.h
n_r3964.h
namei.h
namespace.h
nbd.h [PATCH] include linux/types.h in linux/nbd.h 2006-10-11 11:14:24 -07:00
ncp.h
ncp_fs.h
ncp_fs_i.h
ncp_fs_sb.h
ncp_mount.h
ncp_no.h
neighbour.h
net.h
netdevice.h
netfilter.h
netfilter_arp.h
netfilter_bridge.h
netfilter_decnet.h
netfilter_ipv4.h
netfilter_ipv6.h
netlink.h
netpoll.h
netrom.h
nfs.h
nfs2.h
nfs3.h
nfs4.h
nfs4_acl.h
nfs4_mount.h
nfs_fs.h
nfs_fs_i.h
nfs_fs_sb.h
nfs_idmap.h
nfs_mount.h
nfs_page.h
nfs_xdr.h
nfsacl.h
nfsd_idmap.h
nls.h
nmi.h
node.h
nodemask.h [PATCH] bitmap: parse input from kernel and user buffers 2006-10-11 11:14:22 -07:00
notifier.h [PATCH] Add SRCU-based notifier chains 2006-10-04 07:55:30 -07:00
nsc_gpio.h
nsproxy.h
nubus.h
numa.h
nvram.h
oprofile.h
page-flags.h
pagemap.h
pagevec.h
param.h
parport.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
parport_pc.h
parser.h
patchkey.h
pci-acpi.h
pci.h [PATCH] htirq: tidy up the htirq code 2006-10-04 07:55:30 -07:00
pci_ids.h
pci_regs.h [PATCH] Add Hypertransport capability defines 2006-10-04 07:55:29 -07:00
pcieport_if.h
percpu.h [PATCH] Fix typo in "syntax error if percpu macros are incorrectly used" patch 2006-10-06 08:53:41 -07:00
percpu_counter.h
personality.h
pfkeyv2.h
pfn.h
pg.h
phonedev.h
phy.h
pid.h
pipe_fs_i.h
pkt_cls.h
pkt_sched.h
pktcdvd.h
platform_device.h
plist.h
pm.h
pm_legacy.h
pmu.h
pnp.h
pnpbios.h
poison.h
poll.h
posix-timers.h
posix_acl.h
posix_acl_xattr.h
posix_types.h
ppdev.h
ppp-comp.h
ppp_channel.h
ppp_defs.h
prctl.h
preempt.h
prefetch.h
prio_tree.h
proc_fs.h
profile.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
ps2esdi.h
pspace.h
ptrace.h
qic117.h
qnx4_fs.h
qnxtypes.h
quota.h
quotaio_v1.h
quotaio_v2.h
quotaops.h
radeonfb.h
radix-tree.h
raid_class.h [SCSI] raid class: handle component-add errors 2006-10-04 13:27:26 -05:00
ramfs.h
random.h
raw.h
rbtree.h
rcupdate.h [PATCH] RCU: CREDITS and MAINTAINERS 2006-10-04 07:55:31 -07:00
reboot.h
reboot_fixups.h
reiserfs_acl.h
reiserfs_fs.h
reiserfs_fs_i.h
reiserfs_fs_sb.h
reiserfs_xattr.h
relay.h
resource.h
resume-trace.h
rio.h
rio_drv.h
rio_ids.h
rio_regs.h
rmap.h
romfs_fs.h
root_dev.h
rose.h
route.h
rslib.h
rtc-v3020.h
rtc.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
rtmutex.h
rtnetlink.h
rwsem-spinlock.h
rwsem.h
sc26198.h
scatterlist.h
scc.h
sched.h [PATCH] sched: fix a kerneldoc error on is_init() 2006-10-06 08:53:41 -07:00
screen_info.h
sctp.h
scx200.h
scx200_gpio.h
sdla.h
sdla_fr.h
seccomp.h
securebits.h
security.h IPsec: correct semantics for SELinux policy matching 2006-10-11 23:59:37 -07:00
selection.h
selinux.h
selinux_netlink.h
sem.h
seq_file.h
seqlock.h
serial.h
serial167.h
serialP.h
serial_8250.h
serial_core.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
serial_ip3106.h
serial_reg.h
serio.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
shm.h
shmem_fs.h
signal.h
skbuff.h
slab.h
smb.h
smb_fs.h [PATCH] smbfs endianness annotations 2006-10-10 16:15:34 -07:00
smb_fs_i.h
smb_fs_sb.h
smb_mount.h
smbno.h
smp.h
smp_lock.h
snmp.h
socket.h
sockios.h
som.h
sonet.h
sonypi.h
sort.h
sound.h [PATCH] The scheduled removal of some OSS drivers 2006-10-04 07:55:32 -07:00
soundcard.h
spinlock.h
spinlock_api_smp.h
spinlock_api_up.h
spinlock_types.h
spinlock_types_up.h
spinlock_up.h
srcu.h [PATCH] SRCU: report out-of-memory errors 2006-10-04 07:55:30 -07:00
stacktrace.h
stallion.h
stat.h
statfs.h
stddef.h
stop_machine.h
string.h
stringify.h
superhyway.h
suspend.h
swap.h
swapops.h
synclink.h
sys.h
syscalls.h [PATCH] epoll_pwait() 2006-10-11 11:14:21 -07:00
sysctl.h
sysdev.h
sysfs.h
sysrq.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
sysv_fs.h
taskstats.h
taskstats_kern.h
tcp.h
telephony.h
termios.h
textsearch.h
textsearch_fsm.h
tfrc.h
thread_info.h
threads.h
ticable.h
tifm.h [PATCH] missing include of scatterlist.h 2006-10-08 12:32:36 -07:00
time.h
timer.h
times.h
timex.h [PATCH] provide tickadj define 2006-10-06 08:53:40 -07:00
tiocl.h
tipc.h
tipc_config.h
topology.h
toshiba.h
transport_class.h
trdevice.h
tsacct_kern.h
tty.h
tty_driver.h
tty_flip.h
tty_ldisc.h
types.h [PATCH] Document bi_sector and sector_t 2006-10-04 19:32:09 +02:00
uaccess.h
udf_fs.h
udf_fs_i.h
udf_fs_sb.h
udp.h
ufs_fs.h [PATCH] ufs endianness annotations 2006-10-10 16:15:34 -07:00
ufs_fs_i.h
ufs_fs_sb.h
uinput.h
uio.h
ultrasound.h
umem.h
un.h
unistd.h
unwind.h
usb.h IRQ: Maintain regs pointer globally rather than passing to IRQ handlers 2006-10-05 15:10:12 +01:00
usb_ch9.h
usb_gadget.h
usb_gadgetfs.h
usb_usual.h
usbdevice_fs.h
user.h
utime.h
uts.h
utsname.h
vermagic.h
vfs.h
via.h
video_decoder.h
video_encoder.h
videodev.h
videodev2.h
videotext.h
vmalloc.h
vmstat.h
vt.h
vt_buffer.h
vt_kern.h
wait.h
wanrouter.h
watchdog.h
wireless.h
workqueue.h
writeback.h
x25.h
xattr.h [PATCH] Introduce vfs_listxattr 2006-10-09 14:20:38 -07:00
xfrm.h
yam.h
zconf.h
zftape.h
zlib.h
zorro.h
zorro_ids.h
zutil.h