You should not do arithmetic with __be32 or __le32 types because
sometimes it results incorrect results. Calculations must be done only
with integers that are in in the CPU byte order. This commit migrates
tpm_getcap() to struct tpm_buf in order to sort out these issues.
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
When the I2C Infineon part is attached to an I2C adapter that imposes
a size limitation, large requests will fail with -EOPNOTSUPP. Retry
them with a sane minimum size without re-issuing the 0x05 command
as this appears to occasionally put the TPM in a bad state.
Signed-off-by: Bryan Freed <bfreed@chromium.org>
[rework the patch to adapt to the feedback received]
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Now that the platform device was merged for OF support we can use the
platform device to match ACPI devices as well and run everything
through tpm_tis_init.
pnp_acpi_device is replaced with ACPI_COMPANION, and ACPI_HANDLE is
pushed further down.
platform_get_resource is used instead of acpi_dev_get_resources.
The itpm global module parameter is no longer changed during itpm
detection, instead the phy specific bit is set directly.
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jerry Snitselaar <jsnitsel@redhat.com> (with TPM 2.0)
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> (with TPM 1.2)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Replace the open coded IORESOURCE_IRQ with platform_get_irq, which
supports more cases.
Fixes: 00194826e6 ("tpm_tis: Clean up the force=1 module parameter")
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jerry Snitselaar <jsnitsel@redhat.com> (with TPM 2.0)
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> (with TPM 1.2)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
The test was backwards, triggering IRQ autoprobing if the firmware
did not specify an IRQ, instead of triggering it only when the
module force parameter was specified.
Since autoprobing is not enabled on !x86 and the platform device is
currently only used on !x86, or with force, this has gone unnoticed.
Fixes: 00194826e6 ("tpm_tis: Clean up the force=1 module parameter")
Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jerry Snitselaar <jsnitsel@redhat.com> (with TPM 2.0)
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> (with TPM 1.2)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
In preparation of the modifications to tpm_pcr_extend(), which will
allow callers to supply a digest for each PCR bank of a TPM 2.0,
the TPM 1.2 specific code has been moved to tpm1_pcr_extend().
tpm1_pcr_extend() uses tpm_buf_init() to prepare the command buffer,
which offers protection against buffer overflow. It is called by
tpm_pcr_extend() and tpm_pm_suspend().
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Move CPU native value to big-endian conversion of ordinals to the
tpm_input_header declarations.
With the previous and this patch it will now be possible to modify TPM 1.2
functions to use tpm_buf_init(), which expects CPU native value for the
tag and ordinal arguments.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
In the long term, TPM 1.2 functions in the driver interface will be
modified to use tpm_buf_init().
However, tag and ordinals cannot be passed directly to tpm_buf_init(),
because this function performs CPU native to big-endian conversion of these
arguments. Since TPM_TAG_RQU_COMMAND and TPM_ORD_ are already converted,
passing them to the function will undo the previous conversion.
This patch moves the conversion of TPM_TAG_RQU_COMMAND from the tpm.h
header file in the driver directory to the tpm_input_header declarations
in the driver interface and tpm-sysfs.c.
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
This is a temporary step, towards using the file->ctx for delegation,
and also helps speed up file queries, until the permission lookup
cache is introduced.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The cross check permission helper macros will help simplify code
that does cross task permission checks like ptrace.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Begin the actual switch to using domain labels by storing them on
the context and converting the label to a singular profile where
possible.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Begin moving apparmor to using broader domain labels, that will allow
run time computation of domain type splitting via "stacking" of
profiles into a domain label vec.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Instead of running file revalidation lazily when read/write are called
copy selinux and revalidate the file table on exec. This avoids
extra mediation overhead in read/write and also prevents file handles
being passed through to a grand child unchecked.
Signed-off-by: John Johansen <john.johansen@canonical.com>
There are still a few places where profile replacement fails to update
and a stale profile is used for mediation. Fix this by moving to
accessing the current label through a critical section that will
always ensure mediation is using the current label regardless of
whether the tasks cred has been updated or not.
Signed-off-by: John Johansen <john.johansen@canonical.com>
There is no reason to have the small stubs that don't use domain
private functions in domain.c, instead move them to lsm.c and make
them static.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The data being queried isn't always the current profile and a lookup
relative to the current profile should be done.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The namespace being passed into the replace/remove profiles fns() is
not the view, but the namespace specified by the inode from the
file hook (if present) or the loading tasks ns, if accessing the
top level virtualized load/replace file interface.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Currently lookups are restricted to a single ns component in the
path. However when namespaces are allowed to have separate views, and
scopes this will not be sufficient, as it will be possible to have
a multiple component ns path in scope.
Add some ns lookup fns() to allow this and use them.
Signed-off-by: John Johansen <john.johansen@canonical.com>
Allow userspace to query a profile about permissions, through the
transaction interface that is already used to allow userspace to
query about key,value data.
Signed-off-by: John Johansen <john.johansen@canonical.com>
The simple_transaction interface is slow. It requires 4 syscalls
(open, write, read, close) per query and shares a single lock for each
queries.
So replace its use with a compatible in multi_transaction interface.
It allows for a faster 2 syscall pattern per query. After an initial
open, an arbitrary number of writes and reads can be issued. Each
write will reset the query with new data that can be read. Reads do
not clear the data, and can be issued multiple times, and used with
seek, until a new write is performed which will reset the data
available and the seek position.
Note: this keeps the single lock design, if needed moving to a per
file lock will have to come later.
Signed-off-by: John Johansen <john.johansen@canonical.com>
gsettings mediation needs to be able to determine if apparmor supports
label data queries. A label data query can be done to test for support
but its failure is indistinguishable from other failures, making it an
unreliable indicator.
Fix by making support of label data queries available as a flag in the
apparmorfs features dir tree.
Signed-off-by: John Johansen <john.johansen@canonical.com>
