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* block: sed-opal: check size of shadow mbrJonas Rabenstein2019-06-291-0/+39
| | | | | | | | | | | | Check whether the shadow mbr does fit in the provided space on the target. Also a proper firmware should handle this case and return an error we may prevent problems or even damage with crappy firmwares. Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: ioctl for writing to shadow mbrJonas Rabenstein2019-06-291-2/+89
| | | | | | | | | | | | | | Allow modification of the shadow mbr. If the shadow mbr is not marked as done, this data will be presented read only as the device content. Only after marking the shadow mbr as done and unlocking a locking range the actual content is accessible. Co-authored-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: add ioctl for done-mark of shadow mbrJonas Rabenstein2019-06-291-0/+27
| | | | | | | | | | | | | | | | | Enable users to mark the shadow mbr as done without completely deactivating the shadow mbr feature. This may be useful on reboots, when the power to the disk is not disconnected in between and the shadow mbr stores the required boot files. Of course, this saves also the (few) commands required to enable the feature if it is already enabled and one only wants to mark the shadow mbr as done. Co-authored-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: "Never True" conditionsRevanth Rajashekar2019-06-291-5/+2
| | | | | | | | | 'who' an unsigned variable in stucture opal_session_info can never be lesser than zero. Hence, the condition "who < OPAL_ADMIN1" can never be true. Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: PSID reverttper capabilityRevanth Rajashekar2019-06-291-4/+29
| | | | | | | | | | | | | | | | PSID is a 32 character password printed on the drive label, to prove its physical access. This PSID reverttper function is very useful to regain the control over the drive when it is locked and the user can no longer access it because of some failures. However, *all the data on the drive is completely erased*. This method is advisable only when the user is exhausted of all other recovery methods. PSID capabilities are described in: https://trustedcomputinggroup.org/wp-content/uploads/TCG_Storage-Opal_Feature_Set_PSID_v1.00_r1.00.pdf Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: switch all files cleared marked as GPLv2 to SPDX tagsChristoph Hellwig2019-04-301-9/+1
| | | | | | | | | All these files have some form of the usual GPLv2 boilerplate. Switch them to use SPDX tags instead. Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: rename next to execute_stepsDavid Kozub2019-04-061-16/+17
| | | | | | | | | | | | As the function is responsible for executing the individual steps supplied in the steps argument, execute_steps is a more descriptive name than the rather generic next. Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: don't repeat opal_discovery0 in each steps arrayDavid Kozub2019-04-061-33/+42
| | | | | | | | | | | | Originally each of the opal functions that call next include opal_discovery0 in the array of steps. This is superfluous and can be done always inside next. Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: pass steps via argument rather than via opal_devDavid Kozub2019-04-061-89/+69
| | | | | | | | | | | | | | | | | The steps argument is only read by the next function, so it can be passed directly as an argument rather than via opal_dev. Normally, the steps is an array on the stack, so the pointer stops being valid then the function that set opal_dev.steps returns. If opal_dev.steps was not set to NULL before return it would become a dangling pointer. When the steps are passed as argument this becomes easier to see and more difficult to misuse. Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: use named Opal tokens instead of integer literalsDavid Kozub2019-04-061-9/+9
| | | | | | | | | | | Replace integer literals by Opal tokens defined in opal_proto.h where possible. Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: unify retrieval of table columnsDavid Kozub2019-04-061-83/+47
| | | | | | | | | | | | | | Instead of having multiple places defining the same argument list to get a specific column of a sed-opal table, provide a generic version and call it from those functions. Co-authored-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: add token for OPAL_LIFECYCLEDavid Kozub2019-04-061-2/+2
| | | | | | | | | | | Define OPAL_LIFECYCLE token and use it instead of literals in get_lsp_lifecycle. Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: split generation of bytestring header and contentJonas Rabenstein2019-04-061-8/+14
| | | | | | | | | | | | | | Split the header generation from the (normal) memcpy part if a bytestring is copied into the command buffer. This allows in-place generation of the bytestring content. For example, copy_from_user may be used without an intermediate buffer. Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: print failed function addressJonas Rabenstein2019-04-061-2/+2
| | | | | | | | | | | | Add function address (and if available its symbol) to the message if a step function fails. Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: reuse response_get_token to decrease code duplicationDavid Kozub2019-04-061-31/+15
| | | | | | | | | | | | | | | response_get_token had already been in place, its functionality had been duplicated within response_get_{u64,bytestring} with the same error handling. Unify the handling by reusing response_get_token within the other functions. Co-authored-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: unify error handling of responsesDavid Kozub2019-04-061-0/+5
| | | | | | | | | | | | | | | | response_get_{string,u64} include error handling for argument resp being NULL but response_get_token does not handle this. Make all three of response_get_{string,u64,token} handle NULL resp in the same way. Co-authored-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: unify cmd startDavid Kozub2019-04-061-159/+69
| | | | | | | | | | | | | | | | | Every step starts with resetting the cmd buffer as well as the comid and constructs the appropriate OPAL_CALL command. Consequently, those actions may be combined into one generic function. On should take care that the opening and closing tokens for the argument list are already emitted by cmd_start and cmd_finalize respectively and thus must not be additionally added. Co-authored-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: close parameter list in cmd_finalizeDavid Kozub2019-04-061-22/+3
| | | | | | | | | | | | | | Every step ends by calling cmd_finalize (via finalize_and_send) yet every step adds the token OPAL_ENDLIST on its own. Moving this into cmd_finalize decreases code duplication. Co-authored-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: unify space check in add_token_*Jonas Rabenstein2019-04-061-9/+16
| | | | | | | | | | | | | | All add_token_* functions have a common set of conditions that have to be checked. Use a common function for those checks in order to avoid different behaviour as well as code duplication. Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Co-authored-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: use correct macro for method lengthJonas Rabenstein2019-04-061-1/+1
| | | | | | | | | | | | Also the values of OPAL_UID_LENGTH and OPAL_METHOD_LENGTH are the same, it is weird to use OPAL_UID_LENGTH for the definition of the methods. Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: fix typos and formattingDavid Kozub2019-04-061-8/+10
| | | | | | | | | | | This should make no change in functionality. The formatting changes were triggered by checkpatch.pl. Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Reviewed-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: fix IOC_OPAL_ENABLE_DISABLE_MBRDavid Kozub2019-04-061-3/+6
| | | | | | | | | | | | | | | | | | | | | The implementation of IOC_OPAL_ENABLE_DISABLE_MBR handled the value opal_mbr_data.enable_disable incorrectly: enable_disable is expected to be one of OPAL_MBR_ENABLE(0) or OPAL_MBR_DISABLE(1). enable_disable was passed directly to set_mbr_done and set_mbr_enable_disable where is was interpreted as either OPAL_TRUE(1) or OPAL_FALSE(0). The end result was that calling IOC_OPAL_ENABLE_DISABLE_MBR with OPAL_MBR_ENABLE actually disabled the shadow MBR and vice versa. This patch adds correct conversion from OPAL_MBR_DISABLE/ENABLE to OPAL_FALSE/TRUE. The change affects existing programs using IOC_OPAL_ENABLE_DISABLE_MBR but this is typically used only once when setting up an Opal drive. Acked-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <sbauer@plzdonthack.me> Signed-off-by: David Kozub <zub@linux.fjfi.cvut.cz> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: Fix a couple off by one bugsDan Carpenter2018-06-201-2/+2
| | | | | | | | | | | | resp->num is the number of tokens in resp->tok[]. It gets set in response_parse(). So if n == resp->num then we're reading beyond the end of the data. Fixes: 455a7b238cd6 ("block: Add Sed-opal library") Reviewed-by: Scott Bauer <scott.bauer@intel.com> Tested-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-blockLinus Torvalds2018-04-051-10/+27
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block layer updates from Jens Axboe: "It's a pretty quiet round this time, which is nice. This contains: - series from Bart, cleaning up the way we set/test/clear atomic queue flags. - series from Bart, fixing races between gendisk and queue registration and removal. - set of bcache fixes and improvements from various folks, by way of Michael Lyle. - set of lightnvm updates from Matias, most of it being the 1.2 to 2.0 transition. - removal of unused DIO flags from Nikolay. - blk-mq/sbitmap memory ordering fixes from Omar. - divide-by-zero fix for BFQ from Paolo. - minor documentation patches from Randy. - timeout fix from Tejun. - Alpha "can't write a char atomically" fix from Mikulas. - set of NVMe fixes by way of Keith. - bsg and bsg-lib improvements from Christoph. - a few sed-opal fixes from Jonas. - cdrom check-disk-change deadlock fix from Maurizio. - various little fixes, comment fixes, etc from various folks" * tag 'for-4.17/block-20180402' of git://git.kernel.dk/linux-block: (139 commits) blk-mq: Directly schedule q->timeout_work when aborting a request blktrace: fix comment in blktrace_api.h lightnvm: remove function name in strings lightnvm: pblk: remove some unnecessary NULL checks lightnvm: pblk: don't recover unwritten lines lightnvm: pblk: implement 2.0 support lightnvm: pblk: implement get log report chunk lightnvm: pblk: rename ppaf* to addrf* lightnvm: pblk: check for supported version lightnvm: implement get log report chunk helpers lightnvm: make address conversions depend on generic device lightnvm: add support for 2.0 address format lightnvm: normalize geometry nomenclature lightnvm: complete geo structure with maxoc* lightnvm: add shorten OCSSD version in geo lightnvm: add minor version to generic geometry lightnvm: simplify geometry structure lightnvm: pblk: refactor init/exit sequences lightnvm: Avoid validation of default op value lightnvm: centralize permission check for lightnvm ioctl ...
| * block: sed-opal: fix u64 short atom lengthJonas Rabenstein2018-03-161-7/+4
| | | | | | | | | | | | | | | | The length must be given as bytes and not as 4 bit tuples. Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * block: sed-opal: fix response string extractionJonas Rabenstein2018-03-061-3/+23
| | | | | | | | | | | | | | | | | | | | | | Tokens are prefixed by a variable length of bytes. If a bytestring is not stored in an tiny or short atom, we have to skip more than one byte in order to have the actual bytes not prefixed by the bytes describing the actual length of the string. Acked-by: Jonathan Derrick <jonathan.derrick@intel.com> Signed-off-by: Jonas Rabenstein <jonas.rabenstein@studium.uni-erlangen.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | treewide/trivial: Remove ';;$' typo noiseIngo Molnar2018-02-221-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On lkml suggestions were made to split up such trivial typo fixes into per subsystem patches: --- a/arch/x86/boot/compressed/eboot.c +++ b/arch/x86/boot/compressed/eboot.c @@ -439,7 +439,7 @@ setup_uga32(void **uga_handle, unsigned long size, u32 *width, u32 *height) struct efi_uga_draw_protocol *uga = NULL, *first_uga; efi_guid_t uga_proto = EFI_UGA_PROTOCOL_GUID; unsigned long nr_ugas; - u32 *handles = (u32 *)uga_handle;; + u32 *handles = (u32 *)uga_handle; efi_status_t status = EFI_INVALID_PARAMETER; int i; This patch is the result of the following script: $ sed -i 's/;;$/;/g' $(git grep -E ';;$' | grep "\.[ch]:" | grep -vwE 'for|ia64' | cut -d: -f1 | sort | uniq) ... followed by manual review to make sure it's all good. Splitting this up is just crazy talk, let's get over with this and just do it. Reported-by: Pavel Machek <pavel@ucw.cz> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
* block: sed-opal: Set MBRDone on S3 resume path if TPER is MBREnabledScott Bauer2017-09-111-0/+32
| | | | | | | | | | | | | | | | | | | Users who are booting off their Opal enabled drives are having issues when they have a shadow MBR set up after s3/resume cycle. When the Drive has a shadow MBR setup the MBRDone flag is set to false upon power loss (S3/S4/S5). When the MBRDone flag is false I/O to LBA 0 -> LBA_END_MBR are remapped to the shadow mbr of the drive. If the drive contains useful data in the 0 -> end_mbr range upon s3 resume the user can never get to that data as the drive will keep remapping it to the MBR. To fix this when we unlock on S3 resume, we need to tell the drive that we're done with the shadow mbr (even though we didnt use it) by setting true to MBRDone. This way the drive will stop the remapping and the user can access their data. Acked-by Jon Derrick: <jonathan.derrick@intel.com> Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: sed-opal: Tone down all the pr_* to debugsScott Bauer2017-04-071-79/+74
| | | | | | | | Lets not flood the kernel log with messages unless the user requests so. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed-opal: fix spelling mistake: "Lifcycle" -> "Lifecycle"Colin Ian King2017-03-301-1/+1
| | | | | | | trivial fix to spelling mistake in pr_err error message Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed: Fix opal user range check and unused variablesJon Derrick2017-03-081-8/+2
| | | | | | | | | Fixes check that the opal user is within the range, and cleans up unused method variables. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed-opal: Propagate original error message to userland.Scott Bauer2017-02-231-2/+5
| | | | | | | | | | During an error on a comannd, ex: user provides wrong pw to unlock range, we will gracefully terminate the opal session. We want to propagate the original error to userland instead of the result of the session termination, which is almost always a success. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed-opal: Introduce free_opal_dev to free the structure and clean up stateScott Bauer2017-02-231-0/+30
| | | | | | | | | Before we free the opal structure we need to clean up any saved locking ranges that the user had told us to unlock from a suspend. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed: Embed function data into the function sequenceJon Derrick2017-02-221-255/+163
| | | | | | | | | | By embedding the function data with the function sequence, we can eliminate the external function data and state variable code. It also made obvious some other small cleanups. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed: Check received header lengthsJon Derrick2017-02-221-14/+21
| | | | | | | | | | Add a buffer size check against discovery and response header lengths before we loop over their buffers. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed: Add helper to qualify response tokensJon Derrick2017-02-221-36/+25
| | | | | | | | | | Add helper which verifies the response token is valid and matches the expected value. Merges token_type and response_get_token. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed: Use ssize_t on atom parsers to return errorsJon Derrick2017-02-221-14/+14
| | | | | | | | | | | The short atom parser can return an errno from decoding but does not currently return the error as a signed value. Convert all of the parsers to ssize_t. Signed-off-by: Jon Derrick <jonathan.derrick@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed-opal: allocate struct opal_dev dynamicallyChristoph Hellwig2017-02-171-10/+91
| | | | | | | | | | | | | Insted of bloating the containing structure with it all the time this allocates struct opal_dev dynamically. Additionally this allows moving the definition of struct opal_dev into sed-opal.c. For this a new private data field is added to it that is passed to the send/receive callback. After that a lot of internals can be made private as well. Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Scott Bauer <scott.bauer@intel.com> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block/sed-opal: tone down not supported warningsChristoph Hellwig2017-02-171-4/+4
| | | | | | | | | | Not having OPAL or a sub-feature supported is an entirely normal condition for many drives, so don't warn about it. Keep the messages, but tone them down to debug only. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* Move stack parameters for sed_ioctl to prevent oversized stack with CONFIG_KASANScott Bauer2017-02-141-87/+46
| | | | | | | | | | | | | | | | When CONFIG_KASAN is enabled, compilation fails: block/sed-opal.c: In function 'sed_ioctl': block/sed-opal.c:2447:1: error: the frame size of 2256 bytes is larger than 2048 bytes [-Werror=frame-larger-than=] Moved all the ioctl structures off the stack and dynamically allocate using _IOC_SIZE() Fixes: 455a7b238cd6 ("block: Add Sed-opal library") Reported-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Jens Axboe <axboe@fb.com>
* block: Add Sed-opal libraryScott Bauer2017-02-061-0/+2448
This patch implements the necessary logic to bring an Opal enabled drive out of a factory-enabled into a working Opal state. This patch set also enables logic to save a password to be replayed during a resume from suspend. Signed-off-by: Scott Bauer <scott.bauer@intel.com> Signed-off-by: Rafael Antognolli <Rafael.Antognolli@intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 02:59:28 +0000