[kbuild-all] [gustavoars-linux:for-next/clang-fallthrough 1/1] drivers/scsi/st.c:3831:2: warning: unannotated fall-through between switch labels

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/comm... 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(a)intel.com&gt; All warnings (new ones prefixed by >>): 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(a)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  ^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(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org