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block/scsi_ioctl.c
23 KB
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// SPDX-License-Identifier: GPL-2.0 |
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/* * Copyright (C) 2001 Jens Axboe <axboe@suse.de> |
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*/ |
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#include <linux/compat.h> |
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#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 <linux/uaccess.h> |
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#include <scsi/scsi.h> #include <scsi/scsi_ioctl.h> #include <scsi/scsi_cmnd.h> |
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#include <scsi/sg.h> |
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|
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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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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); |
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__set_bit(WRITE_SAME, filter->write_ok); __set_bit(WRITE_SAME_16, filter->write_ok); __set_bit(WRITE_SAME_32, filter->write_ok); |
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__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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/* ZBC Commands */ __set_bit(ZBC_OUT, filter->write_ok); __set_bit(ZBC_IN, filter->read_ok); |
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} |
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|
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int blk_verify_command(unsigned char *cmd, fmode_t mode) |
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{ 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 */ |
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if (test_bit(cmd[0], filter->write_ok) && (mode & FMODE_WRITE)) |
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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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struct scsi_request *req = scsi_req(rq); if (copy_from_user(req->cmd, hdr->cmdp, hdr->cmd_len)) |
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return -EFAULT; |
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if (blk_verify_command(req->cmd, mode)) |
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return -EPERM; /* * fill in request structure */ |
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req->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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#ifdef CONFIG_AHCI_IMX extern void *sg_io_buffer_hack; #else #define sg_io_buffer_hack NULL #endif |
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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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struct scsi_request *req = scsi_req(rq); |
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int r, ret = 0; |
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/* * fill in all the output members */ |
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hdr->status = req->result & 0xff; hdr->masked_status = status_byte(req->result); hdr->msg_status = msg_byte(req->result); hdr->host_status = host_byte(req->result); hdr->driver_status = driver_byte(req->result); |
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hdr->info = 0; if (hdr->masked_status || hdr->host_status || hdr->driver_status) hdr->info |= SG_INFO_CHECK; |
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hdr->resid = req->resid_len; |
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hdr->sb_len_wr = 0; |
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if (req->sense_len && hdr->sbp) { int len = min((unsigned int) hdr->mx_sb_len, req->sense_len); |
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|
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if (!copy_to_user(hdr->sbp, req->sense, len)) |
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hdr->sb_len_wr = len; else ret = -EFAULT; } |
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if (sg_io_buffer_hack && !hdr->iovec_count) r = copy_to_user(hdr->dxferp, sg_io_buffer_hack, hdr->dxfer_len); else r = blk_rq_unmap_user(bio); |
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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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struct scsi_request *req; |
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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 (sg_io_buffer_hack && hdr->dxfer_len > 0x10000) 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 ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, 0); |
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if (IS_ERR(rq)) return PTR_ERR(rq); |
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req = scsi_req(rq); |
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|
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if (hdr->cmd_len > BLK_MAX_CDB) { |
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req->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL); if (!req->cmd) |
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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); |
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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) { if (sg_io_buffer_hack) ret = blk_rq_map_kern(q, rq, sg_io_buffer_hack, hdr->dxfer_len, GFP_KERNEL); else ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len, 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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req->retries = 0; |
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|
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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: |
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scsi_req_free_cmd(req); |
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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 |
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* @q: request queue to send scsi commands down * @disk: gendisk to operate on (option) |
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* @mode: mode used to open the file through which the ioctl has been * submitted |
21b2f0c80 [SCSI] unify SCSI... |
382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 |
* @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. */ |
e915e872e [PATCH] switch sg... |
410 411 |
int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, struct scsi_ioctl_command __user *sic) |
1da177e4c Linux-2.6.12-rc2 |
412 |
{ |
aa98192de block: Fix kernel... |
413 |
enum { OMAX_SB_LEN = 16 }; /* For backward compatibility */ |
1da177e4c Linux-2.6.12-rc2 |
414 |
struct request *rq; |
82ed4db49 block: split scsi... |
415 |
struct scsi_request *req; |
aeb5d7270 [PATCH] introduce... |
416 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
417 |
unsigned int in_len, out_len, bytes, opcode, cmdlen; |
82ed4db49 block: split scsi... |
418 |
char *buffer = NULL; |
1da177e4c Linux-2.6.12-rc2 |
419 |
|
21b2f0c80 [SCSI] unify SCSI... |
420 421 |
if (!sic) return -EINVAL; |
1da177e4c Linux-2.6.12-rc2 |
422 423 424 425 426 427 428 429 430 431 432 433 434 435 |
/* * 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) { |
dd00cc486 some kmalloc/mems... |
436 |
buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); |
1da177e4c Linux-2.6.12-rc2 |
437 438 |
if (!buffer) return -ENOMEM; |
1da177e4c Linux-2.6.12-rc2 |
439 |
} |
ff005a066 block: sanitize b... |
440 |
rq = blk_get_request(q, in_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, 0); |
a492f0754 block,scsi: fixup... |
441 442 |
if (IS_ERR(rq)) { err = PTR_ERR(rq); |
92697dc94 scsi: Fix more er... |
443 |
goto error_free_buffer; |
eb571eead block,scsi: verif... |
444 |
} |
82ed4db49 block: split scsi... |
445 |
req = scsi_req(rq); |
1da177e4c Linux-2.6.12-rc2 |
446 447 448 449 450 451 452 |
cmdlen = COMMAND_SIZE(opcode); /* * get command and data to send to device, if any */ err = -EFAULT; |
82ed4db49 block: split scsi... |
453 454 |
req->cmd_len = cmdlen; if (copy_from_user(req->cmd, sic->data, cmdlen)) |
1da177e4c Linux-2.6.12-rc2 |
455 |
goto error; |
21b2f0c80 [SCSI] unify SCSI... |
456 |
if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) |
1da177e4c Linux-2.6.12-rc2 |
457 |
goto error; |
f00c4d80f block: pass full ... |
458 |
err = blk_verify_command(req->cmd, mode); |
1da177e4c Linux-2.6.12-rc2 |
459 460 |
if (err) goto error; |
21b2f0c80 [SCSI] unify SCSI... |
461 |
/* default. possible overriden later */ |
64c7f1d15 block, scsi: move... |
462 |
req->retries = 5; |
21b2f0c80 [SCSI] unify SCSI... |
463 |
|
1da177e4c Linux-2.6.12-rc2 |
464 |
switch (opcode) { |
21b2f0c80 [SCSI] unify SCSI... |
465 466 467 |
case SEND_DIAGNOSTIC: case FORMAT_UNIT: rq->timeout = FORMAT_UNIT_TIMEOUT; |
64c7f1d15 block, scsi: move... |
468 |
req->retries = 1; |
21b2f0c80 [SCSI] unify SCSI... |
469 470 471 472 473 474 475 476 477 478 479 480 |
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; |
64c7f1d15 block, scsi: move... |
481 |
req->retries = 1; |
21b2f0c80 [SCSI] unify SCSI... |
482 483 |
break; default: |
3d6392cfb bsg: support for ... |
484 |
rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
21b2f0c80 [SCSI] unify SCSI... |
485 486 |
break; } |
0eb0b63c1 block: consistent... |
487 |
if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO)) { |
21b2f0c80 [SCSI] unify SCSI... |
488 |
err = DRIVER_ERROR << 24; |
84ce0f0e9 scsi: Fix error h... |
489 |
goto error; |
1da177e4c Linux-2.6.12-rc2 |
490 |
} |
21b2f0c80 [SCSI] unify SCSI... |
491 |
blk_execute_rq(q, disk, rq, 0); |
17d5363b8 scsi: introduce a... |
492 |
err = req->result & 0xff; /* only 8 bit SCSI status */ |
1da177e4c Linux-2.6.12-rc2 |
493 |
if (err) { |
82ed4db49 block: split scsi... |
494 495 496 497 |
if (req->sense_len && req->sense) { bytes = (OMAX_SB_LEN > req->sense_len) ? req->sense_len : OMAX_SB_LEN; if (copy_to_user(sic->data, req->sense, bytes)) |
1da177e4c Linux-2.6.12-rc2 |
498 499 500 501 502 503 504 505 |
err = -EFAULT; } } else { if (copy_to_user(sic->data, buffer, out_len)) err = -EFAULT; } error: |
92697dc94 scsi: Fix more er... |
506 507 508 |
blk_put_request(rq); error_free_buffer: |
eb571eead block,scsi: verif... |
509 |
kfree(buffer); |
92697dc94 scsi: Fix more er... |
510 |
|
1da177e4c Linux-2.6.12-rc2 |
511 512 |
return err; } |
21b2f0c80 [SCSI] unify SCSI... |
513 |
EXPORT_SYMBOL_GPL(sg_scsi_ioctl); |
f98d2dfd0 [PATCH] block: Cl... |
514 515 |
/* Send basic block requests */ |
165125e1e [BLOCK] Get rid o... |
516 517 |
static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk, int cmd, int data) |
f98d2dfd0 [PATCH] block: Cl... |
518 519 520 |
{ struct request *rq; int err; |
ff005a066 block: sanitize b... |
521 |
rq = blk_get_request(q, REQ_OP_SCSI_OUT, 0); |
a492f0754 block,scsi: fixup... |
522 523 |
if (IS_ERR(rq)) return PTR_ERR(rq); |
3d6392cfb bsg: support for ... |
524 |
rq->timeout = BLK_DEFAULT_SG_TIMEOUT; |
82ed4db49 block: split scsi... |
525 526 527 |
scsi_req(rq)->cmd[0] = cmd; scsi_req(rq)->cmd[4] = data; scsi_req(rq)->cmd_len = 6; |
b7819b925 block: remove the... |
528 |
blk_execute_rq(q, bd_disk, rq, 0); |
17d5363b8 scsi: introduce a... |
529 |
err = scsi_req(rq)->result ? -EIO : 0; |
f98d2dfd0 [PATCH] block: Cl... |
530 531 532 533 |
blk_put_request(rq); return err; } |
165125e1e [BLOCK] Get rid o... |
534 535 |
static inline int blk_send_start_stop(struct request_queue *q, struct gendisk *bd_disk, int data) |
f98d2dfd0 [PATCH] block: Cl... |
536 537 538 |
{ return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data); } |
98aaaec4a compat_ioctl: rei... |
539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 |
int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp) { #ifdef CONFIG_COMPAT if (in_compat_syscall()) { struct compat_sg_io_hdr hdr32 = { .interface_id = hdr->interface_id, .dxfer_direction = hdr->dxfer_direction, .cmd_len = hdr->cmd_len, .mx_sb_len = hdr->mx_sb_len, .iovec_count = hdr->iovec_count, .dxfer_len = hdr->dxfer_len, .dxferp = (uintptr_t)hdr->dxferp, .cmdp = (uintptr_t)hdr->cmdp, .sbp = (uintptr_t)hdr->sbp, .timeout = hdr->timeout, .flags = hdr->flags, .pack_id = hdr->pack_id, .usr_ptr = (uintptr_t)hdr->usr_ptr, .status = hdr->status, .masked_status = hdr->masked_status, .msg_status = hdr->msg_status, .sb_len_wr = hdr->sb_len_wr, .host_status = hdr->host_status, .driver_status = hdr->driver_status, .resid = hdr->resid, .duration = hdr->duration, .info = hdr->info, }; if (copy_to_user(argp, &hdr32, sizeof(hdr32))) return -EFAULT; return 0; } #endif if (copy_to_user(argp, hdr, sizeof(*hdr))) return -EFAULT; return 0; } EXPORT_SYMBOL(put_sg_io_hdr); int get_sg_io_hdr(struct sg_io_hdr *hdr, const void __user *argp) { #ifdef CONFIG_COMPAT struct compat_sg_io_hdr hdr32; if (in_compat_syscall()) { if (copy_from_user(&hdr32, argp, sizeof(hdr32))) return -EFAULT; *hdr = (struct sg_io_hdr) { .interface_id = hdr32.interface_id, .dxfer_direction = hdr32.dxfer_direction, .cmd_len = hdr32.cmd_len, .mx_sb_len = hdr32.mx_sb_len, .iovec_count = hdr32.iovec_count, .dxfer_len = hdr32.dxfer_len, .dxferp = compat_ptr(hdr32.dxferp), .cmdp = compat_ptr(hdr32.cmdp), .sbp = compat_ptr(hdr32.sbp), .timeout = hdr32.timeout, .flags = hdr32.flags, .pack_id = hdr32.pack_id, .usr_ptr = compat_ptr(hdr32.usr_ptr), .status = hdr32.status, .masked_status = hdr32.masked_status, .msg_status = hdr32.msg_status, .sb_len_wr = hdr32.sb_len_wr, .host_status = hdr32.host_status, .driver_status = hdr32.driver_status, .resid = hdr32.resid, .duration = hdr32.duration, .info = hdr32.info, }; return 0; } #endif if (copy_from_user(hdr, argp, sizeof(*hdr))) return -EFAULT; return 0; } EXPORT_SYMBOL(get_sg_io_hdr); |
f3ee6e63a compat_ioctl: mov... |
626 627 628 629 630 631 632 633 |
#ifdef CONFIG_COMPAT struct compat_cdrom_generic_command { unsigned char cmd[CDROM_PACKET_SIZE]; compat_caddr_t buffer; compat_uint_t buflen; compat_int_t stat; compat_caddr_t sense; unsigned char data_direction; |
6d53a9fe5 block/scsi-ioctl:... |
634 |
unsigned char pad[3]; |
f3ee6e63a compat_ioctl: mov... |
635 636 |
compat_int_t quiet; compat_int_t timeout; |
f5ace5ef3 block: scsi_ioctl... |
637 |
compat_caddr_t unused; |
f3ee6e63a compat_ioctl: mov... |
638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 |
}; #endif static int scsi_get_cdrom_generic_arg(struct cdrom_generic_command *cgc, const void __user *arg) { #ifdef CONFIG_COMPAT if (in_compat_syscall()) { struct compat_cdrom_generic_command cgc32; if (copy_from_user(&cgc32, arg, sizeof(cgc32))) return -EFAULT; *cgc = (struct cdrom_generic_command) { .buffer = compat_ptr(cgc32.buffer), .buflen = cgc32.buflen, .stat = cgc32.stat, .sense = compat_ptr(cgc32.sense), .data_direction = cgc32.data_direction, .quiet = cgc32.quiet, .timeout = cgc32.timeout, |
f5ace5ef3 block: scsi_ioctl... |
659 |
.unused = compat_ptr(cgc32.unused), |
f3ee6e63a compat_ioctl: mov... |
660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 |
}; memcpy(&cgc->cmd, &cgc32.cmd, CDROM_PACKET_SIZE); return 0; } #endif if (copy_from_user(cgc, arg, sizeof(*cgc))) return -EFAULT; return 0; } static int scsi_put_cdrom_generic_arg(const struct cdrom_generic_command *cgc, void __user *arg) { #ifdef CONFIG_COMPAT if (in_compat_syscall()) { struct compat_cdrom_generic_command cgc32 = { .buffer = (uintptr_t)(cgc->buffer), .buflen = cgc->buflen, .stat = cgc->stat, .sense = (uintptr_t)(cgc->sense), .data_direction = cgc->data_direction, .quiet = cgc->quiet, .timeout = cgc->timeout, |
f5ace5ef3 block: scsi_ioctl... |
684 |
.unused = (uintptr_t)(cgc->unused), |
f3ee6e63a compat_ioctl: mov... |
685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 |
}; memcpy(&cgc32.cmd, &cgc->cmd, CDROM_PACKET_SIZE); if (copy_to_user(arg, &cgc32, sizeof(cgc32))) return -EFAULT; return 0; } #endif if (copy_to_user(arg, cgc, sizeof(*cgc))) return -EFAULT; return 0; } static int scsi_cdrom_send_packet(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode, void __user *arg) { struct cdrom_generic_command cgc; struct sg_io_hdr hdr; int err; err = scsi_get_cdrom_generic_arg(&cgc, arg); if (err) return err; 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; 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: return -EINVAL; } 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) return -EFAULT; if (hdr.status) return -EIO; cgc.stat = err; cgc.buflen = hdr.resid; if (scsi_put_cdrom_generic_arg(&cgc, arg)) return -EFAULT; return err; } |
74f3c8aff [PATCH] switch sc... |
756 757 |
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 |
758 |
{ |
f98d2dfd0 [PATCH] block: Cl... |
759 |
int err; |
1da177e4c Linux-2.6.12-rc2 |
760 |
|
315fceee8 block: drop unnec... |
761 |
if (!q) |
1da177e4c Linux-2.6.12-rc2 |
762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 |
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; |
98aaaec4a compat_ioctl: rei... |
794 795 |
err = get_sg_io_hdr(&hdr, arg); if (err) |
1da177e4c Linux-2.6.12-rc2 |
796 |
break; |
74f3c8aff [PATCH] switch sc... |
797 |
err = sg_io(q, bd_disk, &hdr, mode); |
1da177e4c Linux-2.6.12-rc2 |
798 799 |
if (err == -EFAULT) break; |
98aaaec4a compat_ioctl: rei... |
800 |
if (put_sg_io_hdr(&hdr, arg)) |
1da177e4c Linux-2.6.12-rc2 |
801 802 803 |
err = -EFAULT; break; } |
f3ee6e63a compat_ioctl: mov... |
804 805 |
case CDROM_SEND_PACKET: err = scsi_cdrom_send_packet(q, bd_disk, mode, arg); |
1da177e4c Linux-2.6.12-rc2 |
806 |
break; |
1da177e4c Linux-2.6.12-rc2 |
807 808 809 810 811 812 813 814 815 816 |
/* * 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... |
817 |
err = sg_scsi_ioctl(q, bd_disk, mode, arg); |
1da177e4c Linux-2.6.12-rc2 |
818 819 |
break; case CDROMCLOSETRAY: |
f98d2dfd0 [PATCH] block: Cl... |
820 821 |
err = blk_send_start_stop(q, bd_disk, 0x03); break; |
1da177e4c Linux-2.6.12-rc2 |
822 |
case CDROMEJECT: |
f98d2dfd0 [PATCH] block: Cl... |
823 |
err = blk_send_start_stop(q, bd_disk, 0x02); |
1da177e4c Linux-2.6.12-rc2 |
824 825 826 827 |
break; default: err = -ENOTTY; } |
1da177e4c Linux-2.6.12-rc2 |
828 829 |
return err; } |
1da177e4c Linux-2.6.12-rc2 |
830 |
EXPORT_SYMBOL(scsi_cmd_ioctl); |
018e04468 block: get rid of... |
831 |
|
0bfc96cb7 block: fail SCSI ... |
832 833 |
int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd) { |
fa01b1e97 block: add a bdev... |
834 |
if (bd && !bdev_is_partition(bd)) |
0bfc96cb7 block: fail SCSI ... |
835 |
return 0; |
6d9359280 scsi: Silence unn... |
836 837 |
if (capable(CAP_SYS_RAWIO)) return 0; |
6d9359280 scsi: Silence unn... |
838 |
return -ENOIOCTLCMD; |
0bfc96cb7 block: fail SCSI ... |
839 840 |
} EXPORT_SYMBOL(scsi_verify_blk_ioctl); |
577ebb374 block: add and us... |
841 842 843 |
int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode, unsigned int cmd, void __user *arg) { |
0bfc96cb7 block: fail SCSI ... |
844 845 846 847 848 |
int ret; ret = scsi_verify_blk_ioctl(bd, cmd); if (ret < 0) return ret; |
577ebb374 block: add and us... |
849 850 851 |
return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg); } EXPORT_SYMBOL(scsi_cmd_blk_ioctl); |
c8d9cf22c block: Change arg... |
852 853 854 855 856 857 858 |
/** * scsi_req_init - initialize certain fields of a scsi_request structure * @req: Pointer to a scsi_request structure. * Initializes .__cmd[], .cmd, .cmd_len and .sense_len but no other members * of struct scsi_request. */ void scsi_req_init(struct scsi_request *req) |
82ed4db49 block: split scsi... |
859 |
{ |
82ed4db49 block: split scsi... |
860 861 862 863 864 865 |
memset(req->__cmd, 0, sizeof(req->__cmd)); req->cmd = req->__cmd; req->cmd_len = BLK_MAX_CDB; req->sense_len = 0; } EXPORT_SYMBOL(scsi_req_init); |
476d42f13 block/scsi_ioctl.... |
866 |
static int __init blk_scsi_ioctl_init(void) |
018e04468 block: get rid of... |
867 868 869 870 |
{ blk_set_cmd_filter_defaults(&blk_default_cmd_filter); return 0; } |
76da03467 block: call blk_s... |
871 |
fs_initcall(blk_scsi_ioctl_init); |