| Commit message (Collapse) | Author | Age | Files | Lines |
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For SELinux we do not allow security information to change during a remount
operation. Thus this hook simply strips the security module options from
the data and verifies that those are the same options as exist on the
current superblock.
Signed-off-by: Eric Paris <eparis@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
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The VFS mount code passes the mount options to the LSM. The LSM will remove
options it understands from the data and the VFS will then pass the remaining
options onto the underlying filesystem. This is how options like the
SELinux context= work. The problem comes in that -o remount never calls
into LSM code. So if you include an LSM specific option it will get passed
to the filesystem and will cause the remount to fail. An example of where
this is a problem is the 'seclabel' option. The SELinux LSM hook will
print this word in /proc/mounts if the filesystem is being labeled using
xattrs. If you pass this word on mount it will be silently stripped and
ignored. But if you pass this word on remount the LSM never gets called
and it will be passed to the FS. The FS doesn't know what seclabel means
and thus should fail the mount. For example an ext3 fs mounted over loop
# mount -o loop /tmp/fs /mnt/tmp
# cat /proc/mounts | grep /mnt/tmp
/dev/loop0 /mnt/tmp ext3 rw,seclabel,relatime,errors=continue,barrier=0,data=ordered 0 0
# mount -o remount /mnt/tmp
mount: /mnt/tmp not mounted already, or bad option
# dmesg
EXT3-fs (loop0): error: unrecognized mount option "seclabel" or missing value
This patch passes the remount mount options to an new LSM hook.
Signed-off-by: Eric Paris <eparis@redhat.com>
Reviewed-by: James Morris <jmorris@namei.org>
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The security context for the newly created socket shares the same
user, role and MLS attribute as its creator but may have a different
type, which could be specified by a type_transition rule in the relevant
policy package.
Signed-off-by: Harry Ciao <qingtao.cao@windriver.com>
[fix call to security_transition_sid to include qstr, Eric Paris]
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
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The socket SID would be computed on creation and no longer inherit
its creator's SID by default. Socket may have a different type but
needs to retain the creator's role and MLS attribute in order not
to break labeled networking and network access control.
The kernel value for a class would be used to determine if the class
if one of socket classes. If security_compute_sid is called from
userspace the policy value for a class would be mapped to the relevant
kernel value first.
Signed-off-by: Harry Ciao <qingtao.cao@windriver.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
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The security_is_socket_class() is auto-generated by genheaders based
on classmap.h to reduce maintenance effort when a new class is defined
in SELinux kernel. The name for any socket class should be suffixed by
"socket" and doesn't contain more than one substr of "socket".
Signed-off-by: Harry Ciao <qingtao.cao@windriver.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
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This reverts commit 242631c49d4cf39642741d6627750151b058233b.
Conflicts:
security/selinux/hooks.c
SELinux used to recognize certain individual ioctls and check
permissions based on the knowledge of the individual ioctl. In commit
242631c49d4cf396 the SELinux code stopped trying to understand
individual ioctls and to instead looked at the ioctl access bits to
determine in we should check read or write for that operation. This
same suggestion was made to SMACK (and I believe copied into TOMOYO).
But this suggestion is total rubbish. The ioctl access bits are
actually the access requirements for the structure being passed into the
ioctl, and are completely unrelated to the operation of the ioctl or the
object the ioctl is being performed upon.
Take FS_IOC_FIEMAP as an example. FS_IOC_FIEMAP is defined as:
FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
So it has access bits R and W. What this really means is that the
kernel is going to both read and write to the struct fiemap. It has
nothing at all to do with the operations that this ioctl might perform
on the file itself!
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
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These permissions are not used and can be dropped in the kernel
definitions.
Suggested-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Stephen Smalley <sds@tycho.nsa.gov>
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The IPSKB_FORWARDED and IP6SKB_FORWARDED flags are used only in the
multicast forwarding case to indicate that a packet looped back after
forward. So these flags are not a good indicator for packet forwarding.
A better indicator is the incoming interface. If we have no socket context,
but an incoming interface and we see the packet in the ip postroute hook,
the packet is going to be forwarded.
With this patch we use the incoming interface as an indicator on packet
forwarding.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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selinux_sock_rcv_skb_compat and selinux_ip_postroute_compat are just
called if selinux_policycap_netpeer is not set. However in these
functions we check if selinux_policycap_netpeer is set. This leads
to some dead code and to the fact that selinux_xfrm_postroute_last
is never executed. This patch removes the dead code and the checks
for selinux_policycap_netpeer in the compatibility functions.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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selinux_xfrm_sec_ctx_alloc accidentally checks the xfrm domain of
interpretation against the selinux context algorithm. This patch
fixes this by checking ctx_alg against the selinux context algorithm.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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The only user for this hook was selinux. sysctl routes every call
through /proc/sys/. Selinux and other security modules use the file
system checks for sysctl too, so no need for this hook any more.
Signed-off-by: Lucian Adrian Grijincu <lucian.grijincu@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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This fixes an old (2007) selinux regression: filesystem labeling for
/proc/sys returned
-r--r--r-- unknown /proc/sys/fs/file-nr
instead of
-r--r--r-- system_u:object_r:sysctl_fs_t:s0 /proc/sys/fs/file-nr
Events that lead to breaking of /proc/sys/ selinux labeling:
1) sysctl was reimplemented to route all calls through /proc/sys/
commit 77b14db502cb85a031fe8fde6c85d52f3e0acb63
[PATCH] sysctl: reimplement the sysctl proc support
2) proc_dir_entry was removed from ctl_table:
commit 3fbfa98112fc3962c416452a0baf2214381030e6
[PATCH] sysctl: remove the proc_dir_entry member for the sysctl tables
3) selinux still walked the proc_dir_entry tree to apply
labeling. Because ctl_tables don't have a proc_dir_entry, we did
not label /proc/sys/ inodes any more. To achieve this the /proc/sys/
inodes were marked private and private inodes were ignored by
selinux.
commit bbaca6c2e7ef0f663bc31be4dad7cf530f6c4962
[PATCH] selinux: enhance selinux to always ignore private inodes
commit 86a71dbd3e81e8870d0f0e56b87875f57e58222b
[PATCH] sysctl: hide the sysctl proc inodes from selinux
Access control checks have been done by means of a special sysctl hook
that was called for read/write accesses to any /proc/sys/ entry.
We don't have to do this because, instead of walking the
proc_dir_entry tree we can walk the dentry tree (as done in this
patch). With this patch:
* we don't mark /proc/sys/ inodes as private
* we don't need the sysclt security hook
* we walk the dentry tree to find the path to the inode.
We have to strip the PID in /proc/PID/ entries that have a
proc_dir_entry because selinux does not know how to label paths like
'/1/net/rpc/nfsd.fh' (and defaults to 'proc_t' labeling). Selinux does
know of '/net/rpc/nfsd.fh' (and applies the 'sysctl_rpc_t' label).
PID stripping from the path was done implicitly in the previous code
because the proc_dir_entry tree had the root in '/net' in the example
from above. The dentry tree has the root in '/1'.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Lucian Adrian Grijincu <lucian.grijincu@gmail.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
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Currently SELinux has rules which label new objects according to 3 criteria.
The label of the process creating the object, the label of the parent
directory, and the type of object (reg, dir, char, block, etc.) This patch
adds a 4th criteria, the dentry name, thus we can distinguish between
creating a file in an etc_t directory called shadow and one called motd.
There is no file globbing, regex parsing, or anything mystical. Either the
policy exactly (strcmp) matches the dentry name of the object or it doesn't.
This patch has no changes from today if policy does not implement the new
rules.
Signed-off-by: Eric Paris <eparis@redhat.com>
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SELinux would like to implement a new labeling behavior of newly created
inodes. We currently label new inodes based on the parent and the creating
process. This new behavior would also take into account the name of the
new object when deciding the new label. This is not the (supposed) full path,
just the last component of the path.
This is very useful because creating /etc/shadow is different than creating
/etc/passwd but the kernel hooks are unable to differentiate these
operations. We currently require that userspace realize it is doing some
difficult operation like that and than userspace jumps through SELinux hoops
to get things set up correctly. This patch does not implement new
behavior, that is obviously contained in a seperate SELinux patch, but it
does pass the needed name down to the correct LSM hook. If no such name
exists it is fine to pass NULL.
Signed-off-by: Eric Paris <eparis@redhat.com>
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Add a keyctl op (KEYCTL_INSTANTIATE_IOV) that is like KEYCTL_INSTANTIATE, but
takes an iovec array and concatenates the data in-kernel into one buffer.
Since the KEYCTL_INSTANTIATE copies the data anyway, this isn't too much of a
problem.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Add a new keyctl op to reject a key with a specified error code. This works
much the same as negating a key, and so keyctl_negate_key() is made a special
case of keyctl_reject_key(). The difference is that keyctl_negate_key()
selects ENOKEY as the error to be reported.
Typically the key would be rejected with EKEYEXPIRED, EKEYREVOKED or
EKEYREJECTED, but this is not mandatory.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Add a key type operation to permit the key type to vet the description of a new
key that key_alloc() is about to allocate. The operation may reject the
description if it wishes with an error of its choosing. If it does this, the
key will not be allocated.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Add an RCU payload dereference macro as this seems to be a common piece of code
amongst key types that use RCU referenced payloads.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Mimi Zohar <zohar@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6
* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
omap: mailbox: resolve hang issue
OMAP2+: PM: SmartReflex: fix memory leaks in Smartreflex driver
arm: mach-omap2: smartreflex: fix another memory leak
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ssh://master.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into devel-fixes
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This Patch frees all the dynamically allocated memory
which couldn't have been released in some error hitting cases.
Signed-off-by: Shweta Gulati <shweta.gulati@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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Temporary strings with volt_* file names should be released after the
debugfs entries are created. While at it, also simplify the string
allocation, and use just snprintf() to create the name.
The patch eliminates kmemleak reports with the following stack trace
(multiple objects depending on HW):
unreferenced object 0xcedbc5a0 (size 64):
comm "swapper", pid 1, jiffies 4294929375 (age 423.734s)
hex dump (first 32 bytes):
76 6f 6c 74 5f 39 37 35 30 30 30 00 00 00 00 00 volt_975000.....
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<c012fee0>] create_object+0x104/0x208
[<c012dbc8>] kmem_cache_alloc_trace+0xf0/0x17c
[<c0013f64>] omap_sr_probe+0x314/0x420
[<c02a1724>] platform_drv_probe+0x18/0x1c
[<c02a088c>] driver_probe_device+0xc8/0x188
[<c02a09b4>] __driver_attach+0x68/0x8c
[<c02a00ac>] bus_for_each_dev+0x44/0x74
[<c029f9e0>] bus_add_driver+0xa0/0x228
[<c02a0cac>] driver_register+0xa8/0x130
[<c02a1b2c>] platform_driver_probe+0x18/0x8c
[<c0013c1c>] sr_init+0x40/0x74
[<c005a554>] do_one_initcall+0xc8/0x1a0
[<c00084f4>] kernel_init+0x150/0x218
[<c0065d64>] kernel_thread_exit+0x0/0x8
[<ffffffff>] 0xffffffff
Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
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omap4 interrupt disable bits is different. On rx kfifo full, the mbox rx
interrupts wasn't getting disabled, and this is causing the rcm stress tests
to hang.
Signed-off-by: Hari Kanigeri <h-kanigeri2@ti.com>
Signed-off-by: Armando Uribe <x0095078@ti.com>
Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] tape: deadlock on system work queue
[S390] keyboard: integer underflow bug
[S390] xpram: remove __initdata attribute from module parameters
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The 34xx and 3590 tape driver uses the system work queue to defer work
from the interrupt function to process context, e.g. a medium sense
after an unsolicited interrupt. The tape commands started by the work
handler need to be asynchronous, otherwise a deadlock on the system
work queue can occur.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The "ct" variable should be an unsigned int. Both struct kbdiacrs
->kb_cnt and struct kbd_data ->accent_table_size are unsigned ints.
Making it signed causes a problem in KBDIACRUC because the user could
set the signed bit and cause a buffer overflow.
Cc: <stable@kernel.org>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The module parameter 'devs' and 'sizes' are marked as __initdata. The
memory for the parameters are freed after module_init completed. This
can lead to kernel crashes in param_free_charp. Remove the __initdata
attribute to fix the problem.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ALSA: hda - Don't set to D3 in Cirrus errata init verbs
ALSA: hda - add new Fermi 5xx codec IDs to snd-hda
ASoC: WM8994: Ensure late enable events are processed for the ADCs
ASoC: WM8994: Don't disable the AIF[1|2]CLK_ENA unconditionaly
ASoC: Fix WM9081 platform data initialisation
ALSA: hda - Fix unable to record issue on ASUS N82JV
ALSA: HDA: Realtek: Fixup jack detection to input subsystem
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Ensure that the ADCs are provided with a clock as the previous patch
"ASoC: WM8994: Improve playback robustness" did not handle this case
properly.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
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Since we began using the late clock disable functionality, ensure that
we don't disable the clock if any of the ADC or DAC paths are still
enabled. This happens when we have simultaneous playback and recording.
Signed-off-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
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It went AWOL in the multi-component conversion.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Cc: stable@kernel.org
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The errata init verbs for CS42xx codecs contain the verbs to set
the power-state of SPDIF nodes to D3, which seem to break the SPDIF
output on some MacBooks. Since this is executed during the power-up
initialization, we shouldn't turn them down there.
Reported-by: Arun Raghavan <arun.raghavan@collabora.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Added the missing HDMI codec IDs for new Nvidia stuff.
Note that ID 0x17 isn't assigned to anything so far, as suggested by
Stephen.
[Modified to get rid of 0x17 by tiwai]
Signed-off-by: Richard Samson <samson.richard@gmail.com>
Acked-by: Acked-By: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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The codec of N82JV is ALC269VB.
Signed-off-by: Chih-Wei Huang <cwhuang@linux.org.tw>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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This patch fixes an error in the jack detection reporting,
causing the jack detection sometimes not to be reported
correctly to the input subsystem. It should apply to several
Realtek codecs.
Cc: stable@kernel.org
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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If a virtio-console device gets unplugged while a port is open, a
subsequent close() call on the port accesses vqs to free up buffers.
This can lead to a crash.
The buffers are already freed up as a result of the call to
unplug_ports() from virtcons_remove(). The fix is to simply not access
vq information if port->portdev is NULL.
Reported-by: juzhang <juzhang@redhat.com>
CC: stable@kernel.org
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
ceph: no .snap inside of snapped namespace
libceph: fix msgr standby handling
libceph: fix msgr keepalive flag
libceph: fix msgr backoff
libceph: retry after authorization failure
libceph: fix handling of short returns from get_user_pages
ceph: do not clear I_COMPLETE from d_release
ceph: do not set I_COMPLETE
Revert "ceph: keep reference to parent inode on ceph_dentry"
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Otherwise you can do things like
# mkdir .snap/foo
# cd .snap/foo/.snap
# ls
<badness>
Signed-off-by: Sage Weil <sage@newdream.net>
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The standby logic used to be pretty dependent on the work requeueing
behavior that changed when we switched to WQ_NON_REENTRANT. It was also
very fragile.
Restructure things so that:
- We clear WRITE_PENDING when we set STANDBY. This ensures we will
requeue work when we wake up later.
- con_work backs off if STANDBY is set. There is nothing to do if we are
in standby.
- clear_standby() helper is called by both con_send() and con_keepalive(),
the two actions that can wake us up again. Move the connect_seq++
logic here.
Signed-off-by: Sage Weil <sage@newdream.net>
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There was some broken keepalive code using a dead variable. Shift to using
the proper bit flag.
Signed-off-by: Sage Weil <sage@newdream.net>
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With commit f363e45f we replaced a bunch of hacky workqueue mutual
exclusion logic with the WQ_NON_REENTRANT flag. One pieces of fallout is
that the exponential backoff breaks in certain cases:
* con_work attempts to connect.
* we get an immediate failure, and the socket state change handler queues
immediate work.
* con_work calls con_fault, we decide to back off, but can't queue delayed
work.
In this case, we add a BACKOFF bit to make con_work reschedule delayed work
next time it runs (which should be immediately).
Signed-off-by: Sage Weil <sage@newdream.net>
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If we mark the connection CLOSED we will give up trying to reconnect to
this server instance. That is appropriate for things like a protocol
version mismatch that won't change until the server is restarted, at which
point we'll get a new addr and reconnect. An authorization failure like
this is probably due to the server not properly rotating it's secret keys,
however, and should be treated as transient so that the normal backoff and
retry behavior kicks in.
Signed-off-by: Sage Weil <sage@newdream.net>
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get_user_pages() can return fewer pages than we ask for. We were returning
a bogus pointer/error code in that case. Instead, loop until we get all
the pages we want or get an error we can return to the caller.
Signed-off-by: Sage Weil <sage@newdream.net>
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First, this was racy anyway: d_release isn't called until well after the
dentry is unhashed. Second, this runs afoul of the recent dcache change
that clears d_parent prior to calling d_release (949854d0), causing a NULL
pointer dereference.
Signed-off-by: Sage Weil <sage@newdream.net>
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Do not set the I_COMPLETE flag on directories until we resolve races with
dcache pruning.
Signed-off-by: Sage Weil <sage@newdream.net>
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This reverts commit 97d79b403ef03f729883246208ef5d8a2ebc4d68.
This fails to account for d_parent changes due to rename or disconnected
dentries due to submounts or NFS reexports.
Signed-off-by: Sage Weil <sage@newdream.net>
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Pass down the correct node for a transparent hugepage allocation. Most
callers continue to use the current node, however the hugepaged daemon
now uses the previous node of the first to be collapsed page instead.
This ensures that khugepaged does not mess up local memory for an
existing process which uses local policy.
The choice of node is somewhat primitive currently: it just uses the
node of the first page in the pmd range. An alternative would be to
look at multiple pages and use the most popular node. I used the
simplest variant for now which should work well enough for the case of
all pages being on the same node.
[akpm@linux-foundation.org: coding-style fixes]
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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