Release 4.8 block/scsi_ioctl.c
/*
* Copyright (C) 2001 Jens Axboe <axboe@suse.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
*
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public Licens
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
*
*/
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/module.h>
#include <linux/blkdev.h>
#include <linux/capability.h>
#include <linux/completion.h>
#include <linux/cdrom.h>
#include <linux/ratelimit.h>
#include <linux/slab.h>
#include <linux/times.h>
#include <linux/uio.h>
#include <asm/uaccess.h>
#include <scsi/scsi.h>
#include <scsi/scsi_ioctl.h>
#include <scsi/scsi_cmnd.h>
struct blk_cmd_filter {
unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
};
static struct blk_cmd_filter blk_default_cmd_filter;
/* Command group 3 is reserved and should never be used. */
const unsigned char scsi_command_size_tbl[8] =
{
6, 10, 10, 12,
16, 12, 10, 10
};
EXPORT_SYMBOL(scsi_command_size_tbl);
#include <scsi/sg.h>
static int sg_get_version(int __user *p)
{
static const int sg_version_num = 30527;
return put_user(sg_version_num, p);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 24 | 92.31% | 1 | 33.33% |
arjan van de ven | arjan van de ven | 1 | 3.85% | 1 | 33.33% |
al viro | al viro | 1 | 3.85% | 1 | 33.33% |
| Total | 26 | 100.00% | 3 | 100.00% |
static int scsi_get_idlun(struct request_queue *q, int __user *p)
{
return put_user(0, p);
}
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| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 21 | 87.50% | 1 | 33.33% |
jens axboe | jens axboe | 2 | 8.33% | 1 | 33.33% |
al viro | al viro | 1 | 4.17% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
static int scsi_get_bus(struct request_queue *q, int __user *p)
{
return put_user(0, p);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 21 | 87.50% | 1 | 33.33% |
jens axboe | jens axboe | 2 | 8.33% | 1 | 33.33% |
al viro | al viro | 1 | 4.17% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
static int sg_get_timeout(struct request_queue *q)
{
return jiffies_to_clock_t(q->sg_timeout);
}
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| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 11 | 57.89% | 1 | 25.00% |
jens axboe | jens axboe | 5 | 26.32% | 2 | 50.00% |
milton d. miller | milton d. miller | 3 | 15.79% | 1 | 25.00% |
| Total | 19 | 100.00% | 4 | 100.00% |
static int sg_set_timeout(struct request_queue *q, int __user *p)
{
int timeout, err = get_user(timeout, p);
if (!err)
q->sg_timeout = clock_t_to_jiffies(timeout);
return err;
}
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| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 25 | 55.56% | 1 | 20.00% |
jens axboe | jens axboe | 16 | 35.56% | 2 | 40.00% |
milton d. miller | milton d. miller | 3 | 6.67% | 1 | 20.00% |
al viro | al viro | 1 | 2.22% | 1 | 20.00% |
| Total | 45 | 100.00% | 5 | 100.00% |
static int max_sectors_bytes(struct request_queue *q)
{
unsigned int max_sectors = queue_max_sectors(q);
max_sectors = min_t(unsigned int, max_sectors, INT_MAX >> 9);
return max_sectors << 9;
}
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| Person | Tokens | Prop | Commits | CommitProp |
akinobu mita | akinobu mita | 37 | 100.00% | 1 | 100.00% |
| Total | 37 | 100.00% | 1 | 100.00% |
static int sg_get_reserved_size(struct request_queue *q, int __user *p)
{
int val = min_t(int, q->sg_reserved_size, max_sectors_bytes(q));
return put_user(val, p);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 18 | 43.90% | 1 | 14.29% |
alan stern | alan stern | 10 | 24.39% | 1 | 14.29% |
akinobu mita | akinobu mita | 5 | 12.20% | 1 | 14.29% |
jens axboe | jens axboe | 5 | 12.20% | 2 | 28.57% |
martin k. petersen | martin k. petersen | 2 | 4.88% | 1 | 14.29% |
al viro | al viro | 1 | 2.44% | 1 | 14.29% |
| Total | 41 | 100.00% | 7 | 100.00% |
static int sg_set_reserved_size(struct request_queue *q, int __user *p)
{
int size, err = get_user(size, p);
if (err)
return err;
if (size < 0)
return -EINVAL;
q->sg_reserved_size = min(size, max_sectors_bytes(q));
return 0;
}
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| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 31 | 50.00% | 1 | 14.29% |
jens axboe | jens axboe | 15 | 24.19% | 3 | 42.86% |
akinobu mita | akinobu mita | 8 | 12.90% | 1 | 14.29% |
pat lavarre | pat lavarre | 7 | 11.29% | 1 | 14.29% |
al viro | al viro | 1 | 1.61% | 1 | 14.29% |
| Total | 62 | 100.00% | 7 | 100.00% |
/*
* will always return that we are ATAPI even for a real SCSI drive, I'm not
* so sure this is worth doing anything about (why would you care??)
*/
static int sg_emulated_host(struct request_queue *q, int __user *p)
{
return put_user(1, p);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
linus torvalds | linus torvalds | 21 | 87.50% | 1 | 33.33% |
jens axboe | jens axboe | 2 | 8.33% | 1 | 33.33% |
al viro | al viro | 1 | 4.17% | 1 | 33.33% |
| Total | 24 | 100.00% | 3 | 100.00% |
static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
{
/* Basic read-only commands */
__set_bit(TEST_UNIT_READY, filter->read_ok);
__set_bit(REQUEST_SENSE, filter->read_ok);
__set_bit(READ_6, filter->read_ok);
__set_bit(READ_10, filter->read_ok);
__set_bit(READ_12, filter->read_ok);
__set_bit(READ_16, filter->read_ok);
__set_bit(READ_BUFFER, filter->read_ok);
__set_bit(READ_DEFECT_DATA, filter->read_ok);
__set_bit(READ_CAPACITY, filter->read_ok);
__set_bit(READ_LONG, filter->read_ok);
__set_bit(INQUIRY, filter->read_ok);
__set_bit(MODE_SENSE, filter->read_ok);
__set_bit(MODE_SENSE_10, filter->read_ok);
__set_bit(LOG_SENSE, filter->read_ok);
__set_bit(START_STOP, filter->read_ok);
__set_bit(GPCMD_VERIFY_10, filter->read_ok);
__set_bit(VERIFY_16, filter->read_ok);
__set_bit(REPORT_LUNS, filter->read_ok);
__set_bit(SERVICE_ACTION_IN_16, filter->read_ok);
__set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok);
__set_bit(MAINTENANCE_IN, filter->read_ok);
__set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok);
/* Audio CD commands */
__set_bit(GPCMD_PLAY_CD, filter->read_ok);
__set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok);
__set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok);
__set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok);
__set_bit(GPCMD_PAUSE_RESUME, filter->read_ok);
/* CD/DVD data reading */
__set_bit(GPCMD_READ_CD, filter->read_ok);
__set_bit(GPCMD_READ_CD_MSF, filter->read_ok);
__set_bit(GPCMD_READ_DISC_INFO, filter->read_ok);
__set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok);
__set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok);
__set_bit(GPCMD_READ_HEADER, filter->read_ok);
__set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok);
__set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok);
__set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok);
__set_bit(GPCMD_REPORT_KEY, filter->read_ok);
__set_bit(GPCMD_SCAN, filter->read_ok);
__set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok);
__set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok);
__set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok);
__set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok);
__set_bit(GPCMD_SEEK, filter->read_ok);
__set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok);
/* Basic writing commands */
__set_bit(WRITE_6, filter->write_ok);
__set_bit(WRITE_10, filter->write_ok);
__set_bit(WRITE_VERIFY, filter->write_ok);
__set_bit(WRITE_12, filter->write_ok);
__set_bit(WRITE_VERIFY_12, filter->write_ok);
__set_bit(WRITE_16, filter->write_ok);
__set_bit(WRITE_LONG, filter->write_ok);
__set_bit(WRITE_LONG_2, filter->write_ok);
__set_bit(ERASE, filter->write_ok);
__set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
__set_bit(MODE_SELECT, filter->write_ok);
__set_bit(LOG_SELECT, filter->write_ok);
__set_bit(GPCMD_BLANK, filter->write_ok);
__set_bit(GPCMD_CLOSE_TRACK, filter->write_ok);
__set_bit(GPCMD_FLUSH_CACHE, filter->write_ok);
__set_bit(GPCMD_FORMAT_UNIT, filter->write_ok);
__set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok);
__set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok);
__set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok);
__set_bit(GPCMD_SEND_EVENT, filter->write_ok);
__set_bit(GPCMD_SEND_KEY, filter->write_ok);
__set_bit(GPCMD_SEND_OPC, filter->write_ok);
__set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok);
__set_bit(GPCMD_SET_SPEED, filter->write_ok);
__set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
__set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
__set_bit(GPCMD_SET_STREAMING, filter->write_ok);
__set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
fujita tomonori | fujita tomonori | 652 | 98.34% | 2 | 40.00% |
monty at xiph.org | monty at xiph.org | 9 | 1.36% | 1 | 20.00% |
jens axboe | jens axboe | 1 | 0.15% | 1 | 20.00% |
hannes reinecke | hannes reinecke | 1 | 0.15% | 1 | 20.00% |
| Total | 663 | 100.00% | 5 | 100.00% |
int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm)
{
struct blk_cmd_filter *filter = &blk_default_cmd_filter;
/* root can do any command. */
if (capable(CAP_SYS_RAWIO))
return 0;
/* Anybody who can open the device can do a read-safe command */
if (test_bit(cmd[0], filter->read_ok))
return 0;
/* Write-safe commands require a writable open */
if (test_bit(cmd[0], filter->write_ok) && has_write_perm)
return 0;
return -EPERM;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 74 | 100.00% | 1 | 100.00% |
| Total | 74 | 100.00% | 1 | 100.00% |
EXPORT_SYMBOL(blk_verify_command);
static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
struct sg_io_hdr *hdr, fmode_t mode)
{
if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
return -EFAULT;
if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
return -EPERM;
/*
* fill in request structure
*/
rq->cmd_len = hdr->cmd_len;
rq->timeout = msecs_to_jiffies(hdr->timeout);
if (!rq->timeout)
rq->timeout = q->sg_timeout;
if (!rq->timeout)
rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
if (rq->timeout < BLK_MIN_SG_TIMEOUT)
rq->timeout = BLK_MIN_SG_TIMEOUT;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 49 | 38.58% | 7 | 41.18% |
linus torvalds | linus torvalds | 44 | 34.65% | 3 | 17.65% |
al viro | al viro | 15 | 11.81% | 2 | 11.76% |
mike christie | mike christie | 11 | 8.66% | 1 | 5.88% |
fujita tomonori | fujita tomonori | 5 | 3.94% | 3 | 17.65% |
tejun heo | tejun heo | 3 | 2.36% | 1 | 5.88% |
| Total | 127 | 100.00% | 17 | 100.00% |
static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
struct bio *bio)
{
int r, ret = 0;
/*
* fill in all the output members
*/
hdr->status = rq->errors & 0xff;
hdr->masked_status = status_byte(rq->errors);
hdr->msg_status = msg_byte(rq->errors);
hdr->host_status = host_byte(rq->errors);
hdr->driver_status = driver_byte(rq->errors);
hdr->info = 0;
if (hdr->masked_status || hdr->host_status || hdr->driver_status)
hdr->info |= SG_INFO_CHECK;
hdr->resid = rq->resid_len;
hdr->sb_len_wr = 0;
if (rq->sense_len && hdr->sbp) {
int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len);
if (!copy_to_user(hdr->sbp, rq->sense, len))
hdr->sb_len_wr = len;
else
ret = -EFAULT;
}
r = blk_rq_unmap_user(bio);
if (!ret)
ret = r;
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 167 | 83.50% | 1 | 14.29% |
fujita tomonori | fujita tomonori | 14 | 7.00% | 2 | 28.57% |
mike christie | mike christie | 12 | 6.00% | 1 | 14.29% |
boaz harrosh | boaz harrosh | 4 | 2.00% | 1 | 14.29% |
linus torvalds | linus torvalds | 2 | 1.00% | 1 | 14.29% |
tejun heo | tejun heo | 1 | 0.50% | 1 | 14.29% |
| Total | 200 | 100.00% | 7 | 100.00% |
static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
struct sg_io_hdr *hdr, fmode_t mode)
{
unsigned long start_time;
ssize_t ret = 0;
int writing = 0;
int at_head = 0;
struct request *rq;
char sense[SCSI_SENSE_BUFFERSIZE];
struct bio *bio;
if (hdr->interface_id != 'S')
return -EINVAL;
if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))
return -EIO;
if (hdr->dxfer_len)
switch (hdr->dxfer_direction) {
default:
return -EINVAL;
case SG_DXFER_TO_DEV:
writing = 1;
break;
case SG_DXFER_TO_FROM_DEV:
case SG_DXFER_FROM_DEV:
break;
}
if (hdr->flags & SG_FLAG_Q_AT_HEAD)
at_head = 1;
ret = -ENOMEM;
rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
if (IS_ERR(rq))
return PTR_ERR(rq);
blk_rq_set_block_pc(rq);
if (hdr->cmd_len > BLK_MAX_CDB) {
rq->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);
if (!rq->cmd)
goto out_put_request;
}
ret = blk_fill_sghdr_rq(q, rq, hdr, mode);
if (ret < 0)
goto out_free_cdb;
ret = 0;
if (hdr->iovec_count) {
struct iov_iter i;
struct iovec *iov = NULL;
ret = import_iovec(rq_data_dir(rq),
hdr->dxferp, hdr->iovec_count,
0, &iov, &i);
if (ret < 0)
goto out_free_cdb;
/* SG_IO howto says that the shorter of the two wins */
iov_iter_truncate(&i, hdr->dxfer_len);
ret = blk_rq_map_user_iov(q, rq, NULL, &i, GFP_KERNEL);
kfree(iov);
} else if (hdr->dxfer_len)
ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
GFP_KERNEL);
if (ret)
goto out_free_cdb;
bio = rq->bio;
memset(sense, 0, sizeof(sense));
rq->sense = sense;
rq->sense_len = 0;
rq->retries = 0;
start_time = jiffies;
/* ignore return value. All information is passed back to caller
* (if he doesn't check that is his problem).
* N.B. a non-zero SCSI status is _not_ necessarily an error.
*/
blk_execute_rq(q, bd_disk, rq, at_head);
hdr->duration = jiffies_to_msecs(jiffies - start_time);
ret = blk_complete_sghdr_rq(rq, hdr, bio);
out_free_cdb:
if (rq->cmd != rq->__cmd)
kfree(rq->cmd);
out_put_request:
blk_put_request(rq);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 236 | 51.64% | 10 | 29.41% |
christoph hellwig | christoph hellwig | 66 | 14.44% | 2 | 5.88% |
james bottomley | james bottomley | 37 | 8.10% | 3 | 8.82% |
kent overstreet | kent overstreet | 24 | 5.25% | 2 | 5.88% |
douglas gilbert | douglas gilbert | 19 | 4.16% | 2 | 5.88% |
fujita tomonori | fujita tomonori | 14 | 3.06% | 3 | 8.82% |
tejun heo | tejun heo | 14 | 3.06% | 2 | 5.88% |
al viro | al viro | 13 | 2.84% | 2 | 5.88% |
mike christie | mike christie | 12 | 2.63% | 2 | 5.88% |
joe lawrence | joe lawrence | 7 | 1.53% | 1 | 2.94% |
paolo bonzini | paolo bonzini | 6 | 1.31% | 1 | 2.94% |
martin k. petersen | martin k. petersen | 3 | 0.66% | 1 | 2.94% |
sabrina dubroca | sabrina dubroca | 3 | 0.66% | 1 | 2.94% |
christian engelmayer | christian engelmayer | 2 | 0.44% | 1 | 2.94% |
patrick mansfield | patrick mansfield | 1 | 0.22% | 1 | 2.94% |
| Total | 457 | 100.00% | 34 | 100.00% |
/**
* sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl
* @file: file this ioctl operates on (optional)
* @q: request queue to send scsi commands down
* @disk: gendisk to operate on (option)
* @sic: userspace structure describing the command to perform
*
* Send down the scsi command described by @sic to the device below
* the request queue @q. If @file is non-NULL it's used to perform
* fine-grained permission checks that allow users to send down
* non-destructive SCSI commands. If the caller has a struct gendisk
* available it should be passed in as @disk to allow the low level
* driver to use the information contained in it. A non-NULL @disk
* is only allowed if the caller knows that the low level driver doesn't
* need it (e.g. in the scsi subsystem).
*
* Notes:
* - This interface is deprecated - users should use the SG_IO
* interface instead, as this is a more flexible approach to
* performing SCSI commands on a device.
* - The SCSI command length is determined by examining the 1st byte
* of the given command. There is no way to override this.
* - Data transfers are limited to PAGE_SIZE
* - The length (x + y) must be at least OMAX_SB_LEN bytes long to
* accommodate the sense buffer when an error occurs.
* The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that
* old code will not be surprised.
* - If a Unix error occurs (e.g. ENOMEM) then the user will receive
* a negative return and the Unix error code in 'errno'.
* If the SCSI command succeeds then 0 is returned.
* Positive numbers returned are the compacted SCSI error codes (4
* bytes in one int) where the lowest byte is the SCSI status.
*/
#define OMAX_SB_LEN 16
/* For backward compatibility */
int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
struct scsi_ioctl_command __user *sic)
{
struct request *rq;
int err;
unsigned int in_len, out_len, bytes, opcode, cmdlen;
char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
if (!sic)
return -EINVAL;
/*
* get in an out lengths, verify they don't exceed a page worth of data
*/
if (get_user(in_len, &sic->inlen))
return -EFAULT;
if (get_user(out_len, &sic->outlen))
return -EFAULT;
if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
return -EINVAL;
if (get_user(opcode, sic->data))
return -EFAULT;
bytes = max(in_len, out_len);
if (bytes) {
buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
if (!buffer)
return -ENOMEM;
}
rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_RECLAIM);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
goto error_free_buffer;
}
blk_rq_set_block_pc(rq);
cmdlen = COMMAND_SIZE(opcode);
/*
* get command and data to send to device, if any
*/
err = -EFAULT;
rq->cmd_len = cmdlen;
if (copy_from_user(rq->cmd, sic->data, cmdlen))
goto error;
if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
goto error;
err = blk_verify_command(rq->cmd, mode & FMODE_WRITE);
if (err)
goto error;
/* default. possible overriden later */
rq->retries = 5;
switch (opcode) {
case SEND_DIAGNOSTIC:
case FORMAT_UNIT:
rq->timeout = FORMAT_UNIT_TIMEOUT;
rq->retries = 1;
break;
case START_STOP:
rq->timeout = START_STOP_TIMEOUT;
break;
case MOVE_MEDIUM:
rq->timeout = MOVE_MEDIUM_TIMEOUT;
break;
case READ_ELEMENT_STATUS:
rq->timeout = READ_ELEMENT_STATUS_TIMEOUT;
break;
case READ_DEFECT_DATA:
rq->timeout = READ_DEFECT_DATA_TIMEOUT;
rq->retries = 1;
break;
default:
rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
break;
}
if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_RECLAIM)) {
err = DRIVER_ERROR << 24;
goto error;
}
memset(sense, 0, sizeof(sense));
rq->sense = sense;
rq->sense_len = 0;
blk_execute_rq(q, disk, rq, 0);
err = rq->errors & 0xff; /* only 8 bit SCSI status */
if (err) {
if (rq->sense_len && rq->sense) {
bytes = (OMAX_SB_LEN > rq->sense_len) ?
rq->sense_len : OMAX_SB_LEN;
if (copy_to_user(sic->data, rq->sense, bytes))
err = -EFAULT;
}
} else {
if (copy_to_user(sic->data, buffer, out_len))
err = -EFAULT;
}
error:
blk_put_request(rq);
error_free_buffer:
kfree(buffer);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 303 | 57.06% | 4 | 15.38% |
linus torvalds | linus torvalds | 80 | 15.07% | 3 | 11.54% |
christoph hellwig | christoph hellwig | 61 | 11.49% | 1 | 3.85% |
douglas gilbert | douglas gilbert | 36 | 6.78% | 2 | 7.69% |
joe lawrence | joe lawrence | 18 | 3.39% | 2 | 7.69% |
tony battersby | tony battersby | 12 | 2.26% | 2 | 7.69% |
al viro | al viro | 8 | 1.51% | 3 | 11.54% |
james bottomley | james bottomley | 4 | 0.75% | 2 | 7.69% |
fujita tomonori | fujita tomonori | 2 | 0.38% | 2 | 7.69% |
alan cox | alan cox | 2 | 0.38% | 1 | 3.85% |
mel gorman | mel gorman | 2 | 0.38% | 1 | 3.85% |
jan kara | jan kara | 1 | 0.19% | 1 | 3.85% |
yoann padioleau | yoann padioleau | 1 | 0.19% | 1 | 3.85% |
patrick mansfield | patrick mansfield | 1 | 0.19% | 1 | 3.85% |
| Total | 531 | 100.00% | 26 | 100.00% |
EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
/* Send basic block requests */
static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
int cmd, int data)
{
struct request *rq;
int err;
rq = blk_get_request(q, WRITE, __GFP_RECLAIM);
if (IS_ERR(rq))
return PTR_ERR(rq);
blk_rq_set_block_pc(rq);
rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
rq->cmd[0] = cmd;
rq->cmd[4] = data;
rq->cmd_len = 6;
err = blk_execute_rq(q, bd_disk, rq, 0);
blk_put_request(rq);
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
ben collins | ben collins | 90 | 81.82% | 1 | 14.29% |
joe lawrence | joe lawrence | 13 | 11.82% | 2 | 28.57% |
jens axboe | jens axboe | 6 | 5.45% | 3 | 42.86% |
mel gorman | mel gorman | 1 | 0.91% | 1 | 14.29% |
| Total | 110 | 100.00% | 7 | 100.00% |
static inline int blk_send_start_stop(struct request_queue *q,
struct gendisk *bd_disk, int data)
{
return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
ben collins | ben collins | 30 | 93.75% | 1 | 50.00% |
jens axboe | jens axboe | 2 | 6.25% | 1 | 50.00% |
| Total | 32 | 100.00% | 2 | 100.00% |
int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode,
unsigned int cmd, void __user *arg)
{
int err;
if (!q)
return -ENXIO;
switch (cmd) {
/*
* new sgv3 interface
*/
case SG_GET_VERSION_NUM:
err = sg_get_version(arg);
break;
case SCSI_IOCTL_GET_IDLUN:
err = scsi_get_idlun(q, arg);
break;
case SCSI_IOCTL_GET_BUS_NUMBER:
err = scsi_get_bus(q, arg);
break;
case SG_SET_TIMEOUT:
err = sg_set_timeout(q, arg);
break;
case SG_GET_TIMEOUT:
err = sg_get_timeout(q);
break;
case SG_GET_RESERVED_SIZE:
err = sg_get_reserved_size(q, arg);
break;
case SG_SET_RESERVED_SIZE:
err = sg_set_reserved_size(q, arg);
break;
case SG_EMULATED_HOST:
err = sg_emulated_host(q, arg);
break;
case SG_IO: {
struct sg_io_hdr hdr;
err = -EFAULT;
if (copy_from_user(&hdr, arg, sizeof(hdr)))
break;
err = sg_io(q, bd_disk, &hdr, mode);
if (err == -EFAULT)
break;
if (copy_to_user(arg, &hdr, sizeof(hdr)))
err = -EFAULT;
break;
}
case CDROM_SEND_PACKET: {
struct cdrom_generic_command cgc;
struct sg_io_hdr hdr;
err = -EFAULT;
if (copy_from_user(&cgc, arg, sizeof(cgc)))
break;
cgc.timeout = clock_t_to_jiffies(cgc.timeout);
memset(&hdr, 0, sizeof(hdr));
hdr.interface_id = 'S';
hdr.cmd_len = sizeof(cgc.cmd);
hdr.dxfer_len = cgc.buflen;
err = 0;
switch (cgc.data_direction) {
case CGC_DATA_UNKNOWN:
hdr.dxfer_direction = SG_DXFER_UNKNOWN;
break;
case CGC_DATA_WRITE:
hdr.dxfer_direction = SG_DXFER_TO_DEV;
break;
case CGC_DATA_READ:
hdr.dxfer_direction = SG_DXFER_FROM_DEV;
break;
case CGC_DATA_NONE:
hdr.dxfer_direction = SG_DXFER_NONE;
break;
default:
err = -EINVAL;
}
if (err)
break;
hdr.dxferp = cgc.buffer;
hdr.sbp = cgc.sense;
if (hdr.sbp)
hdr.mx_sb_len = sizeof(struct request_sense);
hdr.timeout = jiffies_to_msecs(cgc.timeout);
hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
hdr.cmd_len = sizeof(cgc.cmd);
err = sg_io(q, bd_disk, &hdr, mode);
if (err == -EFAULT)
break;
if (hdr.status)
err = -EIO;
cgc.stat = err;
cgc.buflen = hdr.resid;
if (copy_to_user(arg, &cgc, sizeof(cgc)))
err = -EFAULT;
break;
}
/*
* old junk scsi send command ioctl
*/
case SCSI_IOCTL_SEND_COMMAND:
printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm);
err = -EINVAL;
if (!arg)
break;
err = sg_scsi_ioctl(q, bd_disk, mode, arg);
break;
case CDROMCLOSETRAY:
err = blk_send_start_stop(q, bd_disk, 0x03);
break;
case CDROMEJECT:
err = blk_send_start_stop(q, bd_disk, 0x02);
break;
default:
err = -ENOTTY;
}
return err;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 397 | 68.33% | 5 | 29.41% |
linus torvalds | linus torvalds | 128 | 22.03% | 2 | 11.76% |
al viro | al viro | 22 | 3.79% | 5 | 29.41% |
james bottomley | james bottomley | 10 | 1.72% | 1 | 5.88% |
ben collins | ben collins | 10 | 1.72% | 1 | 5.88% |
patrick mansfield | patrick mansfield | 6 | 1.03% | 1 | 5.88% |
fujita tomonori | fujita tomonori | 5 | 0.86% | 1 | 5.88% |
tim wright | tim wright | 3 | 0.52% | 1 | 5.88% |
| Total | 581 | 100.00% | 17 | 100.00% |
EXPORT_SYMBOL(scsi_cmd_ioctl);
int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
{
if (bd && bd == bd->bd_contains)
return 0;
/* Actually none of these is particularly useful on a partition,
* but they are safe.
*/
switch (cmd) {
case SCSI_IOCTL_GET_IDLUN:
case SCSI_IOCTL_GET_BUS_NUMBER:
case SCSI_IOCTL_GET_PCI:
case SCSI_IOCTL_PROBE_HOST:
case SG_GET_VERSION_NUM:
case SG_SET_TIMEOUT:
case SG_GET_TIMEOUT:
case SG_GET_RESERVED_SIZE:
case SG_SET_RESERVED_SIZE:
case SG_EMULATED_HOST:
return 0;
case CDROM_GET_CAPABILITY:
/* Keep this until we remove the printk below. udev sends it
* and we do not want to spam dmesg about it. CD-ROMs do
* not have partitions, so we get here only for disks.
*/
return -ENOIOCTLCMD;
default:
break;
}
if (capable(CAP_SYS_RAWIO))
return 0;
/* In particular, rule out all resets and host-specific ioctls. */
printk_ratelimited(KERN_WARNING
"%s: sending ioctl %x to a partition!\n", current->comm, cmd);
return -ENOIOCTLCMD;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
paolo bonzini | paolo bonzini | 94 | 90.38% | 1 | 50.00% |
jan kara | jan kara | 10 | 9.62% | 1 | 50.00% |
| Total | 104 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(scsi_verify_blk_ioctl);
int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
unsigned int cmd, void __user *arg)
{
int ret;
ret = scsi_verify_blk_ioctl(bd, cmd);
if (ret < 0)
return ret;
return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
paolo bonzini | paolo bonzini | 63 | 100.00% | 2 | 100.00% |
| Total | 63 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(scsi_cmd_blk_ioctl);
static int __init blk_scsi_ioctl_init(void)
{
blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 17 | 94.44% | 1 | 50.00% |
h hartley sweeten | h hartley sweeten | 1 | 5.56% | 1 | 50.00% |
| Total | 18 | 100.00% | 2 | 100.00% |
fs_initcall(blk_scsi_ioctl_init);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
jens axboe | jens axboe | 1360 | 39.91% | 16 | 17.98% |
fujita tomonori | fujita tomonori | 700 | 20.54% | 10 | 11.24% |
linus torvalds | linus torvalds | 462 | 13.56% | 6 | 6.74% |
paolo bonzini | paolo bonzini | 176 | 5.16% | 3 | 3.37% |
christoph hellwig | christoph hellwig | 136 | 3.99% | 4 | 4.49% |
ben collins | ben collins | 131 | 3.84% | 1 | 1.12% |
al viro | al viro | 65 | 1.91% | 7 | 7.87% |
douglas gilbert | douglas gilbert | 60 | 1.76% | 4 | 4.49% |
james bottomley | james bottomley | 51 | 1.50% | 5 | 5.62% |
akinobu mita | akinobu mita | 50 | 1.47% | 1 | 1.12% |
joe lawrence | joe lawrence | 38 | 1.12% | 2 | 2.25% |
mike christie | mike christie | 35 | 1.03% | 2 | 2.25% |
kent overstreet | kent overstreet | 27 | 0.79% | 3 | 3.37% |
tejun heo | tejun heo | 18 | 0.53% | 3 | 3.37% |
tony battersby | tony battersby | 12 | 0.35% | 2 | 2.25% |
jan kara | jan kara | 11 | 0.32% | 2 | 2.25% |
alan stern | alan stern | 10 | 0.29% | 1 | 1.12% |
monty at xiph.org | monty at xiph.org | 9 | 0.26% | 1 | 1.12% |
patrick mansfield | patrick mansfield | 8 | 0.23% | 1 | 1.12% |
pat lavarre | pat lavarre | 7 | 0.21% | 1 | 1.12% |
milton d. miller | milton d. miller | 6 | 0.18% | 1 | 1.12% |
h hartley sweeten | h hartley sweeten | 6 | 0.18% | 1 | 1.12% |
boaz harrosh | boaz harrosh | 6 | 0.18% | 2 | 2.25% |
martin k. petersen | martin k. petersen | 5 | 0.15% | 1 | 1.12% |
randy dunlap | randy dunlap | 3 | 0.09% | 1 | 1.12% |
mel gorman | mel gorman | 3 | 0.09% | 1 | 1.12% |
sabrina dubroca | sabrina dubroca | 3 | 0.09% | 1 | 1.12% |
tim wright | tim wright | 3 | 0.09% | 1 | 1.12% |
christian engelmayer | christian engelmayer | 2 | 0.06% | 1 | 1.12% |
alan cox | alan cox | 2 | 0.06% | 1 | 1.12% |
yoann padioleau | yoann padioleau | 1 | 0.03% | 1 | 1.12% |
arjan van de ven | arjan van de ven | 1 | 0.03% | 1 | 1.12% |
hannes reinecke | hannes reinecke | 1 | 0.03% | 1 | 1.12% |
| Total | 3408 | 100.00% | 89 | 100.00% |
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