this is a GLIBC specific feature and should not be used.
according to its manpage:
"The call canonicalize_file_name(path) is equivalent
to the call realpath(path, NULL)."
thus, we use realpath so it works everywhere.
Signed-off-by: John Spencer <maillist-mdadm@barfooze.de>
Signed-off-by: NeilBrown <neilb@suse.de>
find_intel_devices() has take a little while to run as it scans
some directory tree, and the result isn't likely to change
often.
So cache the value and only discard it after 10 seconds.
Signed-off-by: NeilBrown <neilb@suse.de>
malloc should never fail, and if it does it is unlikely
that anything else useful can be done. Best approach is to
abort and let some super-daemon restart.
So define xmalloc, xcalloc, xrealloc, xstrdup which don't
fail but just print a message and exit. Then use those
removing all the tests for failure.
Also replace all "malloc;memset" sequences with 'xcalloc'.
Signed-off-by: NeilBrown <neilb@suse.de>
Content of EFI variable is stored in "data" file. Moreover size of data
provided by given variable can be initially validated by reading value of
"size" file.
Function read_efi_variable() has been introduced to simplify the code.
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
OEM table does not suit our needs so it cannot be used.
This patch removes feature added in commit 8a0bf4f378.
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
RstScuV and RstScuO variable names are supported.
First try reading from RstScuV, when it fails try RstScuO.
Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Tested-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
We use PCI device id exposed by AHCI and ISCU drivers (SAS controller)
to find OROM version table.
In this way there is no need to maintain AHCI and ISCU device id list
in mdadm. The consequence is that the OROM properties can be found by mdadm when AHCI or
SAS drivers are loaded in the system.
Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
If operating system is installed using efi, IMSM platform capabilities are
not available via option ROM, but are stored as efi variables. New
mechanism has been introduced to obtain capabilities by variables.
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
It will be used for reading efi variables with capabilities.
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Adds data offset to PCI expansion ROM Data Structure in resource
describing Expansion ROMs. This allows AHCI OROM scanning function
to identify AHCI OROM by device id 0x2822 and vendor id 0x8086.
Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
This patch adds platform support for SAS controller(s) built in Intel(R) Patsburg
chipset.
Signed-off-by: Marcin Labun <marcin.labun@intel.com>
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Array index of 'path' may be out of bounds. Array
'path' of size 256 may use index value(s) 0..284.
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Array index of 'device' may be out of bounds. Array 'device'
of size 40 may use index value(s) 0..43.
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Potential buffer overflow of 'link' caused by user input may occur,
due to non null-terminated string 'link'.
Signed-off-by: Artur Wojcik <artur.wojcik@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The PCI-3.0 Firmware specification allows for option-roms to have
512-byte alignment rather than 2048-byte. As there does not appear to
be a reliable method to detect a PCI-3.0 compliant BIOS from userspace
we allow the imsm platform detection code to presume that a system
modern enough to have an Intel AHCI controller does not have
dangerous/legacy ISA regions in the option-ROM memory space.
An environment variable to disable this behaviour, IMSM_SAFE_OROM_SCAN,
is added in case this presumption is ever proven wrong.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
IMSM_NO_PLATFORM turns off checks that should be tested, so provide a
IMSM_TEST_OROM variable to allow testing the orom constraints in the
mdadm regression suite.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
The option-rom advertises its capabilities in a data structure located in
the platform ROM region 0xc0000-0xf0000. Attempt to detect the option-rom
and limit array creation to the platform's capabilities.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
NeilBrown
John Spencer
Hawrylewicz Czarnowski, Przemyslaw
Labun, Marcin
Artur Wojcik
Dan Williams