* [gustavoars-linux:for-next/clang-fallthrough 1/1] drivers/scsi/st.c:3831:2: warning: unannotated fall-through between switch labels
@ 2021-08-18 5:34 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-08-18 5:34 UTC (permalink / raw)
To: Gustavo A. R. Silva
Cc: clang-built-linux, kbuild-all, Gustavo A. R. Silva, LKML, Kees Cook
[-- Attachment #1: Type: text/plain, Size: 41240 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git for-next/clang-fallthrough
head: 3b37740f7d04ef32cc1a7bb17c2bc69d737c9056
commit: 3b37740f7d04ef32cc1a7bb17c2bc69d737c9056 [1/1] Makefile: Enable -Wimplicit-fallthrough for Clang
config: x86_64-randconfig-a016-20210816 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project af7818093677dcb4c0840aef96bc029deb219e57)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git/commit/?id=3b37740f7d04ef32cc1a7bb17c2bc69d737c9056
git remote add gustavoars-linux https://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git
git fetch --no-tags gustavoars-linux for-next/clang-fallthrough
git checkout 3b37740f7d04ef32cc1a7bb17c2bc69d737c9056
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/scsi/st.c:3831:2: warning: unannotated fall-through between switch labels [-Wimplicit-fallthrough]
default:
^
drivers/scsi/st.c:3831:2: note: insert 'break;' to avoid fall-through
default:
^
break;
1 warning generated.
vim +3831 drivers/scsi/st.c
8038e6456a3e6f Kai Makisara 2016-02-09 3353
8038e6456a3e6f Kai Makisara 2016-02-09 3354
^1da177e4c3f41 Linus Torvalds 2005-04-16 3355 /* Partition the tape into two partitions if size > 0 or one partition if
^1da177e4c3f41 Linus Torvalds 2005-04-16 3356 size == 0.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3357
^1da177e4c3f41 Linus Torvalds 2005-04-16 3358 The block descriptors are read and written because Sony SDT-7000 does not
^1da177e4c3f41 Linus Torvalds 2005-04-16 3359 work without this (suggestion from Michael Schaefer <Michael.Schaefer@dlr.de>).
^1da177e4c3f41 Linus Torvalds 2005-04-16 3360
^1da177e4c3f41 Linus Torvalds 2005-04-16 3361 My HP C1533A drive returns only one partition size field. This is used to
^1da177e4c3f41 Linus Torvalds 2005-04-16 3362 set the size of partition 1. There is no size field for the default partition.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3363 Michael Schaefer's Sony SDT-7000 returns two descriptors and the second is
^1da177e4c3f41 Linus Torvalds 2005-04-16 3364 used to set the size of partition 1 (this is what the SCSI-3 standard specifies).
^1da177e4c3f41 Linus Torvalds 2005-04-16 3365 The following algorithm is used to accommodate both drives: if the number of
^1da177e4c3f41 Linus Torvalds 2005-04-16 3366 partition size fields is greater than the maximum number of additional partitions
^1da177e4c3f41 Linus Torvalds 2005-04-16 3367 in the mode page, the second field is used. Otherwise the first field is used.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3368
^1da177e4c3f41 Linus Torvalds 2005-04-16 3369 For Seagate DDS drives the page length must be 8 when no partitions is defined
^1da177e4c3f41 Linus Torvalds 2005-04-16 3370 and 10 when 1 partition is defined (information from Eric Lee Green). This is
^1da177e4c3f41 Linus Torvalds 2005-04-16 3371 is acceptable also to some other old drives and enforced if the first partition
^1da177e4c3f41 Linus Torvalds 2005-04-16 3372 size field is used for the first additional partition size.
8038e6456a3e6f Kai Makisara 2016-02-09 3373
8038e6456a3e6f Kai Makisara 2016-02-09 3374 For drives that advertize SCSI-3 or newer, use the SSC-3 methods.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3375 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3376 static int partition_tape(struct scsi_tape *STp, int size)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3377 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3378 int result;
8038e6456a3e6f Kai Makisara 2016-02-09 3379 int target_partition;
8038e6456a3e6f Kai Makisara 2016-02-09 3380 bool scsi3 = STp->device->scsi_level >= SCSI_3, needs_format = false;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3381 int pgo, psd_cnt, psdo;
8038e6456a3e6f Kai Makisara 2016-02-09 3382 int psum = PP_MSK_PSUM_MB, units = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3383 unsigned char *bp;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3384
^1da177e4c3f41 Linus Torvalds 2005-04-16 3385 result = read_mode_page(STp, PART_PAGE, 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3386 if (result) {
b30d8bca5b525b Hannes Reinecke 2014-06-25 3387 DEBC_printk(STp, "Can't read partition mode page.\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 3388 return result;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3389 }
8038e6456a3e6f Kai Makisara 2016-02-09 3390 target_partition = 1;
8038e6456a3e6f Kai Makisara 2016-02-09 3391 if (size < 0) {
8038e6456a3e6f Kai Makisara 2016-02-09 3392 target_partition = 0;
8038e6456a3e6f Kai Makisara 2016-02-09 3393 size = -size;
8038e6456a3e6f Kai Makisara 2016-02-09 3394 }
8038e6456a3e6f Kai Makisara 2016-02-09 3395
^1da177e4c3f41 Linus Torvalds 2005-04-16 3396 /* The mode page is in the buffer. Let's modify it and write it. */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3397 bp = (STp->buffer)->b_data;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3398 pgo = MODE_HEADER_LENGTH + bp[MH_OFF_BDESCS_LENGTH];
b30d8bca5b525b Hannes Reinecke 2014-06-25 3399 DEBC_printk(STp, "Partition page length is %d bytes.\n",
b30d8bca5b525b Hannes Reinecke 2014-06-25 3400 bp[pgo + MP_OFF_PAGE_LENGTH] + 2);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3401
^1da177e4c3f41 Linus Torvalds 2005-04-16 3402 psd_cnt = (bp[pgo + MP_OFF_PAGE_LENGTH] + 2 - PART_PAGE_FIXED_LENGTH) / 2;
8038e6456a3e6f Kai Makisara 2016-02-09 3403
8038e6456a3e6f Kai Makisara 2016-02-09 3404 if (scsi3) {
8038e6456a3e6f Kai Makisara 2016-02-09 3405 needs_format = (bp[pgo + PP_OFF_FLAGS] & PP_MSK_POFM) != 0;
8038e6456a3e6f Kai Makisara 2016-02-09 3406 if (needs_format && size == 0) {
8038e6456a3e6f Kai Makisara 2016-02-09 3407 /* No need to write the mode page when clearing
8038e6456a3e6f Kai Makisara 2016-02-09 3408 * partitioning
8038e6456a3e6f Kai Makisara 2016-02-09 3409 */
8038e6456a3e6f Kai Makisara 2016-02-09 3410 DEBC_printk(STp, "Formatting tape with one partition.\n");
8038e6456a3e6f Kai Makisara 2016-02-09 3411 result = format_medium(STp, 0);
8038e6456a3e6f Kai Makisara 2016-02-09 3412 goto out;
8038e6456a3e6f Kai Makisara 2016-02-09 3413 }
8038e6456a3e6f Kai Makisara 2016-02-09 3414 if (needs_format) /* Leave the old value for HP DATs claiming SCSI_3 */
8038e6456a3e6f Kai Makisara 2016-02-09 3415 psd_cnt = 2;
8038e6456a3e6f Kai Makisara 2016-02-09 3416 if ((bp[pgo + PP_OFF_FLAGS] & PP_MSK_PSUM_UNITS) == PP_MSK_PSUM_UNITS) {
8038e6456a3e6f Kai Makisara 2016-02-09 3417 /* Use units scaling for large partitions if the device
8038e6456a3e6f Kai Makisara 2016-02-09 3418 * suggests it and no precision lost. Required for IBM
8038e6456a3e6f Kai Makisara 2016-02-09 3419 * TS1140/50 drives that don't support MB units.
8038e6456a3e6f Kai Makisara 2016-02-09 3420 */
8038e6456a3e6f Kai Makisara 2016-02-09 3421 if (size >= 1000 && (size % 1000) == 0) {
8038e6456a3e6f Kai Makisara 2016-02-09 3422 size /= 1000;
8038e6456a3e6f Kai Makisara 2016-02-09 3423 psum = PP_MSK_PSUM_UNITS;
8038e6456a3e6f Kai Makisara 2016-02-09 3424 units = 9; /* GB */
8038e6456a3e6f Kai Makisara 2016-02-09 3425 }
8038e6456a3e6f Kai Makisara 2016-02-09 3426 }
8038e6456a3e6f Kai Makisara 2016-02-09 3427 /* Try it anyway if too large to specify in MB */
8038e6456a3e6f Kai Makisara 2016-02-09 3428 if (psum == PP_MSK_PSUM_MB && size >= 65534) {
8038e6456a3e6f Kai Makisara 2016-02-09 3429 size /= 1000;
8038e6456a3e6f Kai Makisara 2016-02-09 3430 psum = PP_MSK_PSUM_UNITS;
8038e6456a3e6f Kai Makisara 2016-02-09 3431 units = 9; /* GB */
8038e6456a3e6f Kai Makisara 2016-02-09 3432 }
8038e6456a3e6f Kai Makisara 2016-02-09 3433 }
8038e6456a3e6f Kai Makisara 2016-02-09 3434
8038e6456a3e6f Kai Makisara 2016-02-09 3435 if (size >= 65535 || /* Does not fit into two bytes */
8038e6456a3e6f Kai Makisara 2016-02-09 3436 (target_partition == 0 && psd_cnt < 2)) {
8038e6456a3e6f Kai Makisara 2016-02-09 3437 result = -EINVAL;
8038e6456a3e6f Kai Makisara 2016-02-09 3438 goto out;
8038e6456a3e6f Kai Makisara 2016-02-09 3439 }
8038e6456a3e6f Kai Makisara 2016-02-09 3440
^1da177e4c3f41 Linus Torvalds 2005-04-16 3441 psdo = pgo + PART_PAGE_FIXED_LENGTH;
8038e6456a3e6f Kai Makisara 2016-02-09 3442 /* The second condition is for HP DDS which use only one partition size
8038e6456a3e6f Kai Makisara 2016-02-09 3443 * descriptor
8038e6456a3e6f Kai Makisara 2016-02-09 3444 */
8038e6456a3e6f Kai Makisara 2016-02-09 3445 if (target_partition > 0 &&
8038e6456a3e6f Kai Makisara 2016-02-09 3446 (psd_cnt > bp[pgo + PP_OFF_MAX_ADD_PARTS] ||
8038e6456a3e6f Kai Makisara 2016-02-09 3447 bp[pgo + PP_OFF_MAX_ADD_PARTS] != 1)) {
8038e6456a3e6f Kai Makisara 2016-02-09 3448 bp[psdo] = bp[psdo + 1] = 0xff; /* Rest to partition 0 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3449 psdo += 2;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3450 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3451 memset(bp + psdo, 0, bp[pgo + PP_OFF_NBR_ADD_PARTS] * 2);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3452
b30d8bca5b525b Hannes Reinecke 2014-06-25 3453 DEBC_printk(STp, "psd_cnt %d, max.parts %d, nbr_parts %d\n",
^1da177e4c3f41 Linus Torvalds 2005-04-16 3454 psd_cnt, bp[pgo + PP_OFF_MAX_ADD_PARTS],
b30d8bca5b525b Hannes Reinecke 2014-06-25 3455 bp[pgo + PP_OFF_NBR_ADD_PARTS]);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3456
8038e6456a3e6f Kai Makisara 2016-02-09 3457 if (size == 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3458 bp[pgo + PP_OFF_NBR_ADD_PARTS] = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3459 if (psd_cnt <= bp[pgo + PP_OFF_MAX_ADD_PARTS])
^1da177e4c3f41 Linus Torvalds 2005-04-16 3460 bp[pgo + MP_OFF_PAGE_LENGTH] = 6;
b30d8bca5b525b Hannes Reinecke 2014-06-25 3461 DEBC_printk(STp, "Formatting tape with one partition.\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 3462 } else {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3463 bp[psdo] = (size >> 8) & 0xff;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3464 bp[psdo + 1] = size & 0xff;
8038e6456a3e6f Kai Makisara 2016-02-09 3465 if (target_partition == 0)
8038e6456a3e6f Kai Makisara 2016-02-09 3466 bp[psdo + 2] = bp[psdo + 3] = 0xff;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3467 bp[pgo + 3] = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3468 if (bp[pgo + MP_OFF_PAGE_LENGTH] < 8)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3469 bp[pgo + MP_OFF_PAGE_LENGTH] = 8;
8038e6456a3e6f Kai Makisara 2016-02-09 3470 DEBC_printk(STp,
8038e6456a3e6f Kai Makisara 2016-02-09 3471 "Formatting tape with two partitions (%i = %d MB).\n",
8038e6456a3e6f Kai Makisara 2016-02-09 3472 target_partition, units > 0 ? size * 1000 : size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3473 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3474 bp[pgo + PP_OFF_PART_UNITS] = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3475 bp[pgo + PP_OFF_RESERVED] = 0;
8038e6456a3e6f Kai Makisara 2016-02-09 3476 if (size != 1 || units != 0) {
8038e6456a3e6f Kai Makisara 2016-02-09 3477 bp[pgo + PP_OFF_FLAGS] = PP_BIT_IDP | psum |
8038e6456a3e6f Kai Makisara 2016-02-09 3478 (bp[pgo + PP_OFF_FLAGS] & 0x07);
8038e6456a3e6f Kai Makisara 2016-02-09 3479 bp[pgo + PP_OFF_PART_UNITS] = units;
8038e6456a3e6f Kai Makisara 2016-02-09 3480 } else
8038e6456a3e6f Kai Makisara 2016-02-09 3481 bp[pgo + PP_OFF_FLAGS] = PP_BIT_FDP |
8038e6456a3e6f Kai Makisara 2016-02-09 3482 (bp[pgo + PP_OFF_FLAGS] & 0x1f);
8038e6456a3e6f Kai Makisara 2016-02-09 3483 bp[pgo + MP_OFF_PAGE_LENGTH] = 6 + psd_cnt * 2;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3484
^1da177e4c3f41 Linus Torvalds 2005-04-16 3485 result = write_mode_page(STp, PART_PAGE, 1);
8038e6456a3e6f Kai Makisara 2016-02-09 3486
8038e6456a3e6f Kai Makisara 2016-02-09 3487 if (!result && needs_format)
8038e6456a3e6f Kai Makisara 2016-02-09 3488 result = format_medium(STp, 1);
8038e6456a3e6f Kai Makisara 2016-02-09 3489
^1da177e4c3f41 Linus Torvalds 2005-04-16 3490 if (result) {
b30d8bca5b525b Hannes Reinecke 2014-06-25 3491 st_printk(KERN_INFO, STp, "Partitioning of tape failed.\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 3492 result = (-EIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3493 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3494
8038e6456a3e6f Kai Makisara 2016-02-09 3495 out:
^1da177e4c3f41 Linus Torvalds 2005-04-16 3496 return result;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3497 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3498 \f
^1da177e4c3f41 Linus Torvalds 2005-04-16 3499
^1da177e4c3f41 Linus Torvalds 2005-04-16 3500
^1da177e4c3f41 Linus Torvalds 2005-04-16 3501 /* The ioctl command */
dba7688fc9037c Christoph Hellwig 2021-07-24 3502 static long st_ioctl(struct file *file, unsigned int cmd_in, unsigned long arg)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3503 {
dba7688fc9037c Christoph Hellwig 2021-07-24 3504 void __user *p = (void __user *)arg;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3505 int i, cmd_nr, cmd_type, bt;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3506 int retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3507 unsigned int blk;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3508 struct scsi_tape *STp = file->private_data;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3509 struct st_modedef *STm;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3510 struct st_partstat *STps;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3511
28f85009e0cf6a Matthias Kaehlcke 2007-07-29 3512 if (mutex_lock_interruptible(&STp->lock))
^1da177e4c3f41 Linus Torvalds 2005-04-16 3513 return -ERESTARTSYS;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3514
^1da177e4c3f41 Linus Torvalds 2005-04-16 3515 DEB(
^1da177e4c3f41 Linus Torvalds 2005-04-16 3516 if (debugging && !STp->in_use) {
b30d8bca5b525b Hannes Reinecke 2014-06-25 3517 st_printk(ST_DEB_MSG, STp, "Incorrect device.\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 3518 retval = (-EIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3519 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3520 } ) /* end DEB */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3521
^1da177e4c3f41 Linus Torvalds 2005-04-16 3522 STm = &(STp->modes[STp->current_mode]);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3523 STps = &(STp->ps[STp->partition]);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3524
^1da177e4c3f41 Linus Torvalds 2005-04-16 3525 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 3526 * If we are in the middle of error recovery, don't let anyone
^1da177e4c3f41 Linus Torvalds 2005-04-16 3527 * else try and use this device. Also, if error recovery fails, it
^1da177e4c3f41 Linus Torvalds 2005-04-16 3528 * may try and take the device offline, in which case all further
^1da177e4c3f41 Linus Torvalds 2005-04-16 3529 * access to the device is prohibited.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3530 */
906d15fbd23c12 Christoph Hellwig 2014-10-11 3531 retval = scsi_ioctl_block_when_processing_errors(STp->device, cmd_in,
83ff6fe8580a7c Al Viro 2008-03-02 3532 file->f_flags & O_NDELAY);
906d15fbd23c12 Christoph Hellwig 2014-10-11 3533 if (retval)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3534 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3535
^1da177e4c3f41 Linus Torvalds 2005-04-16 3536 cmd_type = _IOC_TYPE(cmd_in);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3537 cmd_nr = _IOC_NR(cmd_in);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3538
^1da177e4c3f41 Linus Torvalds 2005-04-16 3539 if (cmd_type == _IOC_TYPE(MTIOCTOP) && cmd_nr == _IOC_NR(MTIOCTOP)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3540 struct mtop mtc;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3541
^1da177e4c3f41 Linus Torvalds 2005-04-16 3542 if (_IOC_SIZE(cmd_in) != sizeof(mtc)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3543 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3544 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3545 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3546
^1da177e4c3f41 Linus Torvalds 2005-04-16 3547 i = copy_from_user(&mtc, p, sizeof(struct mtop));
^1da177e4c3f41 Linus Torvalds 2005-04-16 3548 if (i) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3549 retval = (-EFAULT);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3550 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3551 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3552
^1da177e4c3f41 Linus Torvalds 2005-04-16 3553 if (mtc.mt_op == MTSETDRVBUFFER && !capable(CAP_SYS_ADMIN)) {
b30d8bca5b525b Hannes Reinecke 2014-06-25 3554 st_printk(KERN_WARNING, STp,
b30d8bca5b525b Hannes Reinecke 2014-06-25 3555 "MTSETDRVBUFFER only allowed for root.\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 3556 retval = (-EPERM);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3557 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3558 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3559 if (!STm->defined &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3560 (mtc.mt_op != MTSETDRVBUFFER &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3561 (mtc.mt_count & MT_ST_OPTIONS) == 0)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3562 retval = (-ENXIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3563 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3564 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3565
^1da177e4c3f41 Linus Torvalds 2005-04-16 3566 if (!STp->pos_unknown) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3567
^1da177e4c3f41 Linus Torvalds 2005-04-16 3568 if (STps->eof == ST_FM_HIT) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3569 if (mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3570 mtc.mt_op == MTEOM) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3571 mtc.mt_count -= 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3572 if (STps->drv_file >= 0)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3573 STps->drv_file += 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3574 } else if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3575 mtc.mt_count += 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3576 if (STps->drv_file >= 0)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3577 STps->drv_file += 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3578 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3579 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3580
^1da177e4c3f41 Linus Torvalds 2005-04-16 3581 if (mtc.mt_op == MTSEEK) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3582 /* Old position must be restored if partition will be
^1da177e4c3f41 Linus Torvalds 2005-04-16 3583 changed */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3584 i = !STp->can_partitions ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3585 (STp->new_partition != STp->partition);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3586 } else {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3587 i = mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3588 mtc.mt_op == MTRETEN || mtc.mt_op == MTEOM ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3589 mtc.mt_op == MTLOCK || mtc.mt_op == MTLOAD ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3590 mtc.mt_op == MTFSF || mtc.mt_op == MTFSFM ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3591 mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3592 mtc.mt_op == MTCOMPRESSION;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3593 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3594 i = flush_buffer(STp, i);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3595 if (i < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3596 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3597 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3598 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3599 if (STps->rw == ST_WRITING &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3600 (mtc.mt_op == MTREW || mtc.mt_op == MTOFFL ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3601 mtc.mt_op == MTSEEK ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3602 mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3603 i = st_int_ioctl(STp, MTWEOF, 1);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3604 if (i < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3605 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3606 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3607 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3608 if (mtc.mt_op == MTBSF || mtc.mt_op == MTBSFM)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3609 mtc.mt_count++;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3610 STps->rw = ST_IDLE;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3611 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3612
^1da177e4c3f41 Linus Torvalds 2005-04-16 3613 } else {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3614 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 3615 * If there was a bus reset, block further access
^1da177e4c3f41 Linus Torvalds 2005-04-16 3616 * to this device. If the user wants to rewind the tape,
^1da177e4c3f41 Linus Torvalds 2005-04-16 3617 * then reset the flag and allow access again.
^1da177e4c3f41 Linus Torvalds 2005-04-16 3618 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3619 if (mtc.mt_op != MTREW &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3620 mtc.mt_op != MTOFFL &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3621 mtc.mt_op != MTRETEN &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3622 mtc.mt_op != MTERASE &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3623 mtc.mt_op != MTSEEK &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3624 mtc.mt_op != MTEOM) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3625 retval = (-EIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3626 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3627 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3628 reset_state(STp);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3629 /* remove this when the midlevel properly clears was_reset */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3630 STp->device->was_reset = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3631 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3632
^1da177e4c3f41 Linus Torvalds 2005-04-16 3633 if (mtc.mt_op != MTNOP && mtc.mt_op != MTSETBLK &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3634 mtc.mt_op != MTSETDENSITY && mtc.mt_op != MTWSM &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3635 mtc.mt_op != MTSETDRVBUFFER && mtc.mt_op != MTSETPART)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3636 STps->rw = ST_IDLE; /* Prevent automatic WEOF and fsf */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3637
^1da177e4c3f41 Linus Torvalds 2005-04-16 3638 if (mtc.mt_op == MTOFFL && STp->door_locked != ST_UNLOCKED)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3639 do_door_lock(STp, 0); /* Ignore result! */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3640
^1da177e4c3f41 Linus Torvalds 2005-04-16 3641 if (mtc.mt_op == MTSETDRVBUFFER &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3642 (mtc.mt_count & MT_ST_OPTIONS) != 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3643 retval = st_set_options(STp, mtc.mt_count);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3644 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3645 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3646
^1da177e4c3f41 Linus Torvalds 2005-04-16 3647 if (mtc.mt_op == MTSETPART) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3648 if (!STp->can_partitions ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3649 mtc.mt_count < 0 || mtc.mt_count >= ST_NBR_PARTITIONS) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3650 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3651 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3652 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3653 if (mtc.mt_count >= STp->nbr_partitions &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3654 (STp->nbr_partitions = nbr_partitions(STp)) < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3655 retval = (-EIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3656 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3657 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3658 if (mtc.mt_count >= STp->nbr_partitions) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3659 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3660 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3661 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3662 STp->new_partition = mtc.mt_count;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3663 retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3664 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3665 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3666
^1da177e4c3f41 Linus Torvalds 2005-04-16 3667 if (mtc.mt_op == MTMKPART) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3668 if (!STp->can_partitions) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3669 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3670 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3671 }
8038e6456a3e6f Kai Makisara 2016-02-09 3672 i = do_load_unload(STp, file, 1);
8038e6456a3e6f Kai Makisara 2016-02-09 3673 if (i < 0) {
8038e6456a3e6f Kai Makisara 2016-02-09 3674 retval = i;
8038e6456a3e6f Kai Makisara 2016-02-09 3675 goto out;
8038e6456a3e6f Kai Makisara 2016-02-09 3676 }
8038e6456a3e6f Kai Makisara 2016-02-09 3677 i = partition_tape(STp, mtc.mt_count);
8038e6456a3e6f Kai Makisara 2016-02-09 3678 if (i < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3679 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3680 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3681 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3682 for (i = 0; i < ST_NBR_PARTITIONS; i++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3683 STp->ps[i].rw = ST_IDLE;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3684 STp->ps[i].at_sm = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3685 STp->ps[i].last_block_valid = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3686 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3687 STp->partition = STp->new_partition = 0;
8038e6456a3e6f Kai Makisara 2016-02-09 3688 STp->nbr_partitions = mtc.mt_count != 0 ? 2 : 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3689 STps->drv_block = STps->drv_file = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3690 retval = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3691 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3692 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3693
^1da177e4c3f41 Linus Torvalds 2005-04-16 3694 if (mtc.mt_op == MTSEEK) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3695 i = set_location(STp, mtc.mt_count, STp->new_partition, 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3696 if (!STp->can_partitions)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3697 STp->ps[0].rw = ST_IDLE;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3698 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3699 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3700 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3701
^1da177e4c3f41 Linus Torvalds 2005-04-16 3702 if (mtc.mt_op == MTUNLOAD || mtc.mt_op == MTOFFL) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3703 retval = do_load_unload(STp, file, 0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3704 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3705 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3706
^1da177e4c3f41 Linus Torvalds 2005-04-16 3707 if (mtc.mt_op == MTLOAD) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3708 retval = do_load_unload(STp, file, max(1, mtc.mt_count));
^1da177e4c3f41 Linus Torvalds 2005-04-16 3709 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3710 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3711
^1da177e4c3f41 Linus Torvalds 2005-04-16 3712 if (mtc.mt_op == MTLOCK || mtc.mt_op == MTUNLOCK) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3713 retval = do_door_lock(STp, (mtc.mt_op == MTLOCK));
^1da177e4c3f41 Linus Torvalds 2005-04-16 3714 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3715 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3716
^1da177e4c3f41 Linus Torvalds 2005-04-16 3717 if (STp->can_partitions && STp->ready == ST_READY &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3718 (i = switch_partition(STp)) < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3719 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3720 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3721 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3722
^1da177e4c3f41 Linus Torvalds 2005-04-16 3723 if (mtc.mt_op == MTCOMPRESSION)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3724 retval = st_compression(STp, (mtc.mt_count & 1));
^1da177e4c3f41 Linus Torvalds 2005-04-16 3725 else
^1da177e4c3f41 Linus Torvalds 2005-04-16 3726 retval = st_int_ioctl(STp, mtc.mt_op, mtc.mt_count);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3727 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3728 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3729 if (!STm->defined) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3730 retval = (-ENXIO);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3731 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3732 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3733
^1da177e4c3f41 Linus Torvalds 2005-04-16 3734 if ((i = flush_buffer(STp, 0)) < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3735 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3736 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3737 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3738 if (STp->can_partitions &&
^1da177e4c3f41 Linus Torvalds 2005-04-16 3739 (i = switch_partition(STp)) < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3740 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3741 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3742 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3743
^1da177e4c3f41 Linus Torvalds 2005-04-16 3744 if (cmd_type == _IOC_TYPE(MTIOCGET) && cmd_nr == _IOC_NR(MTIOCGET)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3745 struct mtget mt_status;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3746
^1da177e4c3f41 Linus Torvalds 2005-04-16 3747 if (_IOC_SIZE(cmd_in) != sizeof(struct mtget)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3748 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3749 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3750 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3751
^1da177e4c3f41 Linus Torvalds 2005-04-16 3752 mt_status.mt_type = STp->tape_type;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3753 mt_status.mt_dsreg =
^1da177e4c3f41 Linus Torvalds 2005-04-16 3754 ((STp->block_size << MT_ST_BLKSIZE_SHIFT) & MT_ST_BLKSIZE_MASK) |
^1da177e4c3f41 Linus Torvalds 2005-04-16 3755 ((STp->density << MT_ST_DENSITY_SHIFT) & MT_ST_DENSITY_MASK);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3756 mt_status.mt_blkno = STps->drv_block;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3757 mt_status.mt_fileno = STps->drv_file;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3758 if (STp->block_size != 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3759 if (STps->rw == ST_WRITING)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3760 mt_status.mt_blkno +=
^1da177e4c3f41 Linus Torvalds 2005-04-16 3761 (STp->buffer)->buffer_bytes / STp->block_size;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3762 else if (STps->rw == ST_READING)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3763 mt_status.mt_blkno -=
^1da177e4c3f41 Linus Torvalds 2005-04-16 3764 ((STp->buffer)->buffer_bytes +
^1da177e4c3f41 Linus Torvalds 2005-04-16 3765 STp->block_size - 1) / STp->block_size;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3766 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3767
^1da177e4c3f41 Linus Torvalds 2005-04-16 3768 mt_status.mt_gstat = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3769 if (STp->drv_write_prot)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3770 mt_status.mt_gstat |= GMT_WR_PROT(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3771 if (mt_status.mt_blkno == 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3772 if (mt_status.mt_fileno == 0)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3773 mt_status.mt_gstat |= GMT_BOT(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3774 else
^1da177e4c3f41 Linus Torvalds 2005-04-16 3775 mt_status.mt_gstat |= GMT_EOF(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3776 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3777 mt_status.mt_erreg = (STp->recover_reg << MT_ST_SOFTERR_SHIFT);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3778 mt_status.mt_resid = STp->partition;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3779 if (STps->eof == ST_EOM_OK || STps->eof == ST_EOM_ERROR)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3780 mt_status.mt_gstat |= GMT_EOT(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3781 else if (STps->eof >= ST_EOM_OK)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3782 mt_status.mt_gstat |= GMT_EOD(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3783 if (STp->density == 1)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3784 mt_status.mt_gstat |= GMT_D_800(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3785 else if (STp->density == 2)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3786 mt_status.mt_gstat |= GMT_D_1600(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3787 else if (STp->density == 3)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3788 mt_status.mt_gstat |= GMT_D_6250(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3789 if (STp->ready == ST_READY)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3790 mt_status.mt_gstat |= GMT_ONLINE(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3791 if (STp->ready == ST_NO_TAPE)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3792 mt_status.mt_gstat |= GMT_DR_OPEN(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3793 if (STps->at_sm)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3794 mt_status.mt_gstat |= GMT_SM(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3795 if (STm->do_async_writes ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3796 (STm->do_buffer_writes && STp->block_size != 0) ||
^1da177e4c3f41 Linus Torvalds 2005-04-16 3797 STp->drv_buffer != 0)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3798 mt_status.mt_gstat |= GMT_IM_REP_EN(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3799 if (STp->cleaning_req)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3800 mt_status.mt_gstat |= GMT_CLN(0xffffffff);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3801
1207045da5a7c9 Arnd Bergmann 2018-09-07 3802 retval = put_user_mtget(p, &mt_status);
1207045da5a7c9 Arnd Bergmann 2018-09-07 3803 if (retval)
^1da177e4c3f41 Linus Torvalds 2005-04-16 3804 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3805
^1da177e4c3f41 Linus Torvalds 2005-04-16 3806 STp->recover_reg = 0; /* Clear after read */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3807 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3808 } /* End of MTIOCGET */
^1da177e4c3f41 Linus Torvalds 2005-04-16 3809 if (cmd_type == _IOC_TYPE(MTIOCPOS) && cmd_nr == _IOC_NR(MTIOCPOS)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3810 struct mtpos mt_pos;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3811 if (_IOC_SIZE(cmd_in) != sizeof(struct mtpos)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3812 retval = (-EINVAL);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3813 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3814 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3815 if ((i = get_location(STp, &blk, &bt, 0)) < 0) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 3816 retval = i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3817 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3818 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3819 mt_pos.mt_blkno = blk;
1207045da5a7c9 Arnd Bergmann 2018-09-07 3820 retval = put_user_mtpos(p, &mt_pos);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3821 goto out;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3822 }
28f85009e0cf6a Matthias Kaehlcke 2007-07-29 3823 mutex_unlock(&STp->lock);
d320a9551e394c Arnd Bergmann 2019-03-15 3824
dba7688fc9037c Christoph Hellwig 2021-07-24 3825 switch (cmd_in) {
dba7688fc9037c Christoph Hellwig 2021-07-24 3826 case SG_IO:
dba7688fc9037c Christoph Hellwig 2021-07-24 3827 case SCSI_IOCTL_SEND_COMMAND:
dba7688fc9037c Christoph Hellwig 2021-07-24 3828 case CDROM_SEND_PACKET:
dba7688fc9037c Christoph Hellwig 2021-07-24 3829 if (!capable(CAP_SYS_RAWIO))
dba7688fc9037c Christoph Hellwig 2021-07-24 3830 return -EPERM;
^1da177e4c3f41 Linus Torvalds 2005-04-16 @3831 default:
^1da177e4c3f41 Linus Torvalds 2005-04-16 3832 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3833 }
dba7688fc9037c Christoph Hellwig 2021-07-24 3834
2e27f576abc6f0 Christoph Hellwig 2021-07-24 3835 retval = scsi_ioctl(STp->device, STp->disk, file->f_mode, cmd_in, p);
dba7688fc9037c Christoph Hellwig 2021-07-24 3836 if (!retval && cmd_in == SCSI_IOCTL_STOP_UNIT) {
dba7688fc9037c Christoph Hellwig 2021-07-24 3837 /* unload */
dba7688fc9037c Christoph Hellwig 2021-07-24 3838 STp->rew_at_close = 0;
dba7688fc9037c Christoph Hellwig 2021-07-24 3839 STp->ready = ST_NO_TAPE;
dba7688fc9037c Christoph Hellwig 2021-07-24 3840 }
dba7688fc9037c Christoph Hellwig 2021-07-24 3841 return retval;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3842
^1da177e4c3f41 Linus Torvalds 2005-04-16 3843 out:
28f85009e0cf6a Matthias Kaehlcke 2007-07-29 3844 mutex_unlock(&STp->lock);
^1da177e4c3f41 Linus Torvalds 2005-04-16 3845 return retval;
^1da177e4c3f41 Linus Torvalds 2005-04-16 3846 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 3847
:::::: The code at line 3831 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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