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block/scsi_ioctl.c
19.4 KB
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/* * 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> |
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#include <linux/capability.h> |
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#include <linux/completion.h> #include <linux/cdrom.h> |
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#include <linux/ratelimit.h> |
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#include <linux/slab.h> #include <linux/times.h> |
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#include <linux/uio.h> |
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#include <asm/uaccess.h> #include <scsi/scsi.h> #include <scsi/scsi_ioctl.h> #include <scsi/scsi_cmnd.h> |
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struct blk_cmd_filter { unsigned long read_ok[BLK_SCSI_CMD_PER_LONG]; unsigned long write_ok[BLK_SCSI_CMD_PER_LONG]; |
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}; static struct blk_cmd_filter blk_default_cmd_filter; |
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|
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/* Command group 3 is reserved and should never be used. */ |
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const unsigned char scsi_command_size_tbl[8] = |
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{ 6, 10, 10, 12, 16, 12, 10, 10 }; |
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EXPORT_SYMBOL(scsi_command_size_tbl); |
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|
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#include <scsi/sg.h> static int sg_get_version(int __user *p) { |
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static const int sg_version_num = 30527; |
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return put_user(sg_version_num, p); } |
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static int scsi_get_idlun(struct request_queue *q, int __user *p) |
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{ return put_user(0, p); } |
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static int scsi_get_bus(struct request_queue *q, int __user *p) |
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{ return put_user(0, p); } |
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static int sg_get_timeout(struct request_queue *q) |
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{ |
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return jiffies_to_clock_t(q->sg_timeout); |
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} |
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static int sg_set_timeout(struct request_queue *q, int __user *p) |
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{ int timeout, err = get_user(timeout, p); if (!err) |
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q->sg_timeout = clock_t_to_jiffies(timeout); |
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return err; } |
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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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static int sg_get_reserved_size(struct request_queue *q, int __user *p) |
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{ |
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int val = min_t(int, q->sg_reserved_size, max_sectors_bytes(q)); |
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return put_user(val, p); |
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} |
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static int sg_set_reserved_size(struct request_queue *q, int __user *p) |
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{ int size, err = get_user(size, p); if (err) return err; if (size < 0) return -EINVAL; |
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|
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q->sg_reserved_size = min(size, max_sectors_bytes(q)); |
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return 0; } /* * 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??) */ |
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static int sg_emulated_host(struct request_queue *q, int __user *p) |
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{ return put_user(1, p); } |
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static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter) |
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{ /* 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); |
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__set_bit(SERVICE_ACTION_IN_16, filter->read_ok); |
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__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); |
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__set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok); |
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} |
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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; |
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/* 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; } EXPORT_SYMBOL(blk_verify_command); |
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|
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static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, |
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struct sg_io_hdr *hdr, fmode_t mode) |
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{ |
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if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) return -EFAULT; |
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if (blk_verify_command(rq->cmd, mode & FMODE_WRITE)) |
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return -EPERM; /* * fill in request structure */ rq->cmd_len = hdr->cmd_len; |
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|
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rq->timeout = msecs_to_jiffies(hdr->timeout); |
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if (!rq->timeout) rq->timeout = q->sg_timeout; if (!rq->timeout) rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
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if (rq->timeout < BLK_MIN_SG_TIMEOUT) rq->timeout = BLK_MIN_SG_TIMEOUT; |
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return 0; } |
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|
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static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, struct bio *bio) |
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{ |
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int r, ret = 0; |
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/* * 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; |
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hdr->resid = rq->resid_len; |
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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; } |
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r = blk_rq_unmap_user(bio); if (!ret) ret = r; |
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|
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return ret; |
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} |
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|
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static int sg_io(struct request_queue *q, struct gendisk *bd_disk, struct sg_io_hdr *hdr, fmode_t mode) |
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{ |
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unsigned long start_time; |
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ssize_t ret = 0; int writing = 0; |
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int at_head = 0; |
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struct request *rq; |
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char sense[SCSI_SENSE_BUFFERSIZE]; |
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struct bio *bio; |
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if (hdr->interface_id != 'S') return -EINVAL; |
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|
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if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9)) |
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return -EIO; |
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if (hdr->dxfer_len) |
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switch (hdr->dxfer_direction) { default: return -EINVAL; |
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case SG_DXFER_TO_DEV: writing = 1; break; |
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case SG_DXFER_TO_FROM_DEV: |
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case SG_DXFER_FROM_DEV: |
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break; } |
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if (hdr->flags & SG_FLAG_Q_AT_HEAD) at_head = 1; |
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|
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ret = -ENOMEM; |
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rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL); |
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if (IS_ERR(rq)) return PTR_ERR(rq); |
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blk_rq_set_block_pc(rq); |
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|
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if (hdr->cmd_len > BLK_MAX_CDB) { rq->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL); if (!rq->cmd) goto out_put_request; |
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} |
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|
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ret = blk_fill_sghdr_rq(q, rq, hdr, mode); if (ret < 0) |
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goto out_free_cdb; |
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|
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ret = 0; |
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if (hdr->iovec_count) { |
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struct iov_iter i; |
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struct iovec *iov = NULL; |
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|
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ret = import_iovec(rq_data_dir(rq), hdr->dxferp, hdr->iovec_count, 0, &iov, &i); if (ret < 0) |
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goto out_free_cdb; |
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|
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/* SG_IO howto says that the shorter of the two wins */ |
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iov_iter_truncate(&i, hdr->dxfer_len); |
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|
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ret = blk_rq_map_user_iov(q, rq, NULL, &i, GFP_KERNEL); |
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kfree(iov); |
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} else if (hdr->dxfer_len) |
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ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len, |
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GFP_KERNEL); |
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if (ret) |
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goto out_free_cdb; |
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|
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bio = rq->bio; |
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memset(sense, 0, sizeof(sense)); rq->sense = sense; rq->sense_len = 0; |
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rq->retries = 0; |
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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. */ |
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blk_execute_rq(q, bd_disk, rq, at_head); |
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|
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hdr->duration = jiffies_to_msecs(jiffies - start_time); |
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|
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ret = blk_complete_sghdr_rq(rq, hdr, bio); |
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out_free_cdb: if (rq->cmd != rq->__cmd) kfree(rq->cmd); out_put_request: |
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blk_put_request(rq); return ret; |
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} |
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/** * 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. */ |
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#define OMAX_SB_LEN 16 /* For backward compatibility */ |
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int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, struct scsi_ioctl_command __user *sic) |
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{ struct request *rq; |
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int err; |
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unsigned int in_len, out_len, bytes, opcode, cmdlen; char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; |
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if (!sic) return -EINVAL; |
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/* * 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) { |
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425 |
buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); |
1da177e4c Linux-2.6.12-rc2 |
426 427 |
if (!buffer) return -ENOMEM; |
1da177e4c Linux-2.6.12-rc2 |
428 |
} |
71baba4b9 mm, page_alloc: r... |
429 |
rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_RECLAIM); |
a492f0754 block,scsi: fixup... |
430 431 |
if (IS_ERR(rq)) { err = PTR_ERR(rq); |
92697dc94 scsi: Fix more er... |
432 |
goto error_free_buffer; |
eb571eead block,scsi: verif... |
433 |
} |
2ba136daa fix regression in... |
434 |
blk_rq_set_block_pc(rq); |
1da177e4c Linux-2.6.12-rc2 |
435 436 437 438 439 440 441 442 443 444 |
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; |
21b2f0c80 [SCSI] unify SCSI... |
445 |
if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) |
1da177e4c Linux-2.6.12-rc2 |
446 |
goto error; |
018e04468 block: get rid of... |
447 |
err = blk_verify_command(rq->cmd, mode & FMODE_WRITE); |
1da177e4c Linux-2.6.12-rc2 |
448 449 |
if (err) goto error; |
21b2f0c80 [SCSI] unify SCSI... |
450 451 |
/* default. possible overriden later */ rq->retries = 5; |
1da177e4c Linux-2.6.12-rc2 |
452 |
switch (opcode) { |
21b2f0c80 [SCSI] unify SCSI... |
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 |
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: |
3d6392cfb bsg: support for ... |
472 |
rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
21b2f0c80 [SCSI] unify SCSI... |
473 474 |
break; } |
71baba4b9 mm, page_alloc: r... |
475 |
if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_RECLAIM)) { |
21b2f0c80 [SCSI] unify SCSI... |
476 |
err = DRIVER_ERROR << 24; |
84ce0f0e9 scsi: Fix error h... |
477 |
goto error; |
1da177e4c Linux-2.6.12-rc2 |
478 479 480 481 482 |
} memset(sense, 0, sizeof(sense)); rq->sense = sense; rq->sense_len = 0; |
1da177e4c Linux-2.6.12-rc2 |
483 |
|
21b2f0c80 [SCSI] unify SCSI... |
484 |
blk_execute_rq(q, disk, rq, 0); |
1da177e4c Linux-2.6.12-rc2 |
485 486 487 488 489 490 491 492 493 494 495 496 497 498 |
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: |
92697dc94 scsi: Fix more er... |
499 500 501 |
blk_put_request(rq); error_free_buffer: |
eb571eead block,scsi: verif... |
502 |
kfree(buffer); |
92697dc94 scsi: Fix more er... |
503 |
|
1da177e4c Linux-2.6.12-rc2 |
504 505 |
return err; } |
21b2f0c80 [SCSI] unify SCSI... |
506 |
EXPORT_SYMBOL_GPL(sg_scsi_ioctl); |
f98d2dfd0 [PATCH] block: Cl... |
507 508 |
/* Send basic block requests */ |
165125e1e [BLOCK] Get rid o... |
509 510 |
static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk, int cmd, int data) |
f98d2dfd0 [PATCH] block: Cl... |
511 512 513 |
{ struct request *rq; int err; |
71baba4b9 mm, page_alloc: r... |
514 |
rq = blk_get_request(q, WRITE, __GFP_RECLAIM); |
a492f0754 block,scsi: fixup... |
515 516 |
if (IS_ERR(rq)) return PTR_ERR(rq); |
f27b087b8 block: add blk_rq... |
517 |
blk_rq_set_block_pc(rq); |
3d6392cfb bsg: support for ... |
518 |
rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
f98d2dfd0 [PATCH] block: Cl... |
519 520 521 522 523 524 525 526 |
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; } |
165125e1e [BLOCK] Get rid o... |
527 528 |
static inline int blk_send_start_stop(struct request_queue *q, struct gendisk *bd_disk, int data) |
f98d2dfd0 [PATCH] block: Cl... |
529 530 531 |
{ return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data); } |
74f3c8aff [PATCH] switch sc... |
532 533 |
int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode, unsigned int cmd, void __user *arg) |
1da177e4c Linux-2.6.12-rc2 |
534 |
{ |
f98d2dfd0 [PATCH] block: Cl... |
535 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
536 |
|
315fceee8 block: drop unnec... |
537 |
if (!q) |
1da177e4c Linux-2.6.12-rc2 |
538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 |
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; |
74f3c8aff [PATCH] switch sc... |
574 |
err = sg_io(q, bd_disk, &hdr, mode); |
1da177e4c Linux-2.6.12-rc2 |
575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 |
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); |
ad337591f [SCSI] block: Fix... |
618 |
hdr.timeout = jiffies_to_msecs(cgc.timeout); |
1da177e4c Linux-2.6.12-rc2 |
619 620 |
hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd; hdr.cmd_len = sizeof(cgc.cmd); |
74f3c8aff [PATCH] switch sc... |
621 |
err = sg_io(q, bd_disk, &hdr, mode); |
1da177e4c Linux-2.6.12-rc2 |
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 |
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 ", current->comm); err = -EINVAL; if (!arg) break; |
74f3c8aff [PATCH] switch sc... |
645 |
err = sg_scsi_ioctl(q, bd_disk, mode, arg); |
1da177e4c Linux-2.6.12-rc2 |
646 647 |
break; case CDROMCLOSETRAY: |
f98d2dfd0 [PATCH] block: Cl... |
648 649 |
err = blk_send_start_stop(q, bd_disk, 0x03); break; |
1da177e4c Linux-2.6.12-rc2 |
650 |
case CDROMEJECT: |
f98d2dfd0 [PATCH] block: Cl... |
651 |
err = blk_send_start_stop(q, bd_disk, 0x02); |
1da177e4c Linux-2.6.12-rc2 |
652 653 654 655 |
break; default: err = -ENOTTY; } |
1da177e4c Linux-2.6.12-rc2 |
656 657 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
658 |
EXPORT_SYMBOL(scsi_cmd_ioctl); |
018e04468 block: get rid of... |
659 |
|
0bfc96cb7 block: fail SCSI ... |
660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 |
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; } |
6d9359280 scsi: Silence unn... |
689 690 |
if (capable(CAP_SYS_RAWIO)) return 0; |
0bfc96cb7 block: fail SCSI ... |
691 692 693 694 |
/* In particular, rule out all resets and host-specific ioctls. */ printk_ratelimited(KERN_WARNING "%s: sending ioctl %x to a partition! ", current->comm, cmd); |
6d9359280 scsi: Silence unn... |
695 |
return -ENOIOCTLCMD; |
0bfc96cb7 block: fail SCSI ... |
696 697 |
} EXPORT_SYMBOL(scsi_verify_blk_ioctl); |
577ebb374 block: add and us... |
698 699 700 |
int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode, unsigned int cmd, void __user *arg) { |
0bfc96cb7 block: fail SCSI ... |
701 702 703 704 705 |
int ret; ret = scsi_verify_blk_ioctl(bd, cmd); if (ret < 0) return ret; |
577ebb374 block: add and us... |
706 707 708 |
return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg); } EXPORT_SYMBOL(scsi_cmd_blk_ioctl); |
476d42f13 block/scsi_ioctl.... |
709 |
static int __init blk_scsi_ioctl_init(void) |
018e04468 block: get rid of... |
710 711 712 713 |
{ blk_set_cmd_filter_defaults(&blk_default_cmd_filter); return 0; } |
76da03467 block: call blk_s... |
714 |
fs_initcall(blk_scsi_ioctl_init); |