^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2001 Jens Axboe <axboe@suse.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/completion.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/cdrom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/ratelimit.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/times.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/uio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <scsi/scsi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <scsi/scsi_ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <scsi/scsi_cmnd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <scsi/sg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct blk_cmd_filter {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) static struct blk_cmd_filter blk_default_cmd_filter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) /* Command group 3 is reserved and should never be used. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) const unsigned char scsi_command_size_tbl[8] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 6, 10, 10, 12,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 16, 12, 10, 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) EXPORT_SYMBOL(scsi_command_size_tbl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int sg_get_version(int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static const int sg_version_num = 30527;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return put_user(sg_version_num, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static int scsi_get_idlun(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return put_user(0, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static int scsi_get_bus(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return put_user(0, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static int sg_get_timeout(struct request_queue *q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return jiffies_to_clock_t(q->sg_timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) static int sg_set_timeout(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) int timeout, err = get_user(timeout, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) if (!err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) q->sg_timeout = clock_t_to_jiffies(timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) static int max_sectors_bytes(struct request_queue *q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) unsigned int max_sectors = queue_max_sectors(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) max_sectors = min_t(unsigned int, max_sectors, INT_MAX >> 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return max_sectors << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) static int sg_get_reserved_size(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) int val = min_t(int, q->sg_reserved_size, max_sectors_bytes(q));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return put_user(val, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) static int sg_set_reserved_size(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int size, err = get_user(size, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) if (size < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) q->sg_reserved_size = min(size, max_sectors_bytes(q));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) * will always return that we are ATAPI even for a real SCSI drive, I'm not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) * so sure this is worth doing anything about (why would you care??)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static int sg_emulated_host(struct request_queue *q, int __user *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return put_user(1, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) /* Basic read-only commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) __set_bit(TEST_UNIT_READY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) __set_bit(REQUEST_SENSE, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) __set_bit(READ_6, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) __set_bit(READ_10, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) __set_bit(READ_12, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) __set_bit(READ_16, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) __set_bit(READ_BUFFER, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) __set_bit(READ_DEFECT_DATA, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) __set_bit(READ_CAPACITY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) __set_bit(READ_LONG, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) __set_bit(INQUIRY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) __set_bit(MODE_SENSE, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) __set_bit(MODE_SENSE_10, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) __set_bit(LOG_SENSE, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) __set_bit(START_STOP, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) __set_bit(GPCMD_VERIFY_10, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) __set_bit(VERIFY_16, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) __set_bit(REPORT_LUNS, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) __set_bit(SERVICE_ACTION_IN_16, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) __set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) __set_bit(MAINTENANCE_IN, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) __set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) /* Audio CD commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) __set_bit(GPCMD_PLAY_CD, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) __set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) __set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) __set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) __set_bit(GPCMD_PAUSE_RESUME, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* CD/DVD data reading */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) __set_bit(GPCMD_READ_CD, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) __set_bit(GPCMD_READ_CD_MSF, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) __set_bit(GPCMD_READ_DISC_INFO, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) __set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) __set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) __set_bit(GPCMD_READ_HEADER, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) __set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) __set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) __set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) __set_bit(GPCMD_REPORT_KEY, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) __set_bit(GPCMD_SCAN, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) __set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) __set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) __set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) __set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) __set_bit(GPCMD_SEEK, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) __set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) /* Basic writing commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) __set_bit(WRITE_6, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) __set_bit(WRITE_10, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) __set_bit(WRITE_VERIFY, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) __set_bit(WRITE_12, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) __set_bit(WRITE_VERIFY_12, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) __set_bit(WRITE_16, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) __set_bit(WRITE_LONG, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) __set_bit(WRITE_LONG_2, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) __set_bit(WRITE_SAME, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) __set_bit(WRITE_SAME_16, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) __set_bit(WRITE_SAME_32, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) __set_bit(ERASE, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) __set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) __set_bit(MODE_SELECT, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) __set_bit(LOG_SELECT, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) __set_bit(GPCMD_BLANK, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) __set_bit(GPCMD_CLOSE_TRACK, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) __set_bit(GPCMD_FLUSH_CACHE, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) __set_bit(GPCMD_FORMAT_UNIT, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) __set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) __set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) __set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) __set_bit(GPCMD_SEND_EVENT, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) __set_bit(GPCMD_SEND_KEY, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) __set_bit(GPCMD_SEND_OPC, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) __set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) __set_bit(GPCMD_SET_SPEED, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) __set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) __set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) __set_bit(GPCMD_SET_STREAMING, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) __set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) /* ZBC Commands */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) __set_bit(ZBC_OUT, filter->write_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) __set_bit(ZBC_IN, filter->read_ok);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) int blk_verify_command(unsigned char *cmd, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) struct blk_cmd_filter *filter = &blk_default_cmd_filter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) /* root can do any command. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) if (capable(CAP_SYS_RAWIO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) /* Anybody who can open the device can do a read-safe command */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (test_bit(cmd[0], filter->read_ok))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) /* Write-safe commands require a writable open */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (test_bit(cmd[0], filter->write_ok) && (mode & FMODE_WRITE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) EXPORT_SYMBOL(blk_verify_command);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct sg_io_hdr *hdr, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) struct scsi_request *req = scsi_req(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) if (copy_from_user(req->cmd, hdr->cmdp, hdr->cmd_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (blk_verify_command(req->cmd, mode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) * fill in request structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) req->cmd_len = hdr->cmd_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) rq->timeout = msecs_to_jiffies(hdr->timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) if (!rq->timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) rq->timeout = q->sg_timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!rq->timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) if (rq->timeout < BLK_MIN_SG_TIMEOUT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) rq->timeout = BLK_MIN_SG_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) struct bio *bio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) struct scsi_request *req = scsi_req(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) int r, ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) * fill in all the output members
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) hdr->status = req->result & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) hdr->masked_status = status_byte(req->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) hdr->msg_status = msg_byte(req->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) hdr->host_status = host_byte(req->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) hdr->driver_status = driver_byte(req->result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) hdr->info = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) if (hdr->masked_status || hdr->host_status || hdr->driver_status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) hdr->info |= SG_INFO_CHECK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) hdr->resid = req->resid_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) hdr->sb_len_wr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (req->sense_len && hdr->sbp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) int len = min((unsigned int) hdr->mx_sb_len, req->sense_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) if (!copy_to_user(hdr->sbp, req->sense, len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) hdr->sb_len_wr = len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) ret = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) r = blk_rq_unmap_user(bio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) ret = r;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct sg_io_hdr *hdr, fmode_t mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) unsigned long start_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) ssize_t ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) int writing = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int at_head = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct scsi_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct bio *bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (hdr->interface_id != 'S')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (hdr->dxfer_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) switch (hdr->dxfer_direction) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) case SG_DXFER_TO_DEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) writing = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) case SG_DXFER_TO_FROM_DEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) case SG_DXFER_FROM_DEV:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) if (hdr->flags & SG_FLAG_Q_AT_HEAD)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) at_head = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) rq = blk_get_request(q, writing ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (IS_ERR(rq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) return PTR_ERR(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) req = scsi_req(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) if (hdr->cmd_len > BLK_MAX_CDB) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) req->cmd = kzalloc(hdr->cmd_len, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) if (!req->cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) goto out_put_request;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) ret = blk_fill_sghdr_rq(q, rq, hdr, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) goto out_free_cdb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) if (hdr->iovec_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct iov_iter i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct iovec *iov = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) ret = import_iovec(rq_data_dir(rq), hdr->dxferp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) hdr->iovec_count, 0, &iov, &i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) goto out_free_cdb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) /* SG_IO howto says that the shorter of the two wins */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) iov_iter_truncate(&i, hdr->dxfer_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) ret = blk_rq_map_user_iov(q, rq, NULL, &i, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) kfree(iov);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) } else if (hdr->dxfer_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) goto out_free_cdb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) bio = rq->bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) req->retries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) start_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) /* ignore return value. All information is passed back to caller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * (if he doesn't check that is his problem).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * N.B. a non-zero SCSI status is _not_ necessarily an error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) blk_execute_rq(q, bd_disk, rq, at_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) hdr->duration = jiffies_to_msecs(jiffies - start_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) ret = blk_complete_sghdr_rq(rq, hdr, bio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) out_free_cdb:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) scsi_req_free_cmd(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) out_put_request:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) blk_put_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) * @q: request queue to send scsi commands down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) * @disk: gendisk to operate on (option)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) * @mode: mode used to open the file through which the ioctl has been
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) * submitted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) * @sic: userspace structure describing the command to perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * Send down the scsi command described by @sic to the device below
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * the request queue @q. If @file is non-NULL it's used to perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) * fine-grained permission checks that allow users to send down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) * non-destructive SCSI commands. If the caller has a struct gendisk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) * available it should be passed in as @disk to allow the low level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) * driver to use the information contained in it. A non-NULL @disk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) * is only allowed if the caller knows that the low level driver doesn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) * need it (e.g. in the scsi subsystem).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) * Notes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) * - This interface is deprecated - users should use the SG_IO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) * interface instead, as this is a more flexible approach to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) * performing SCSI commands on a device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) * - The SCSI command length is determined by examining the 1st byte
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) * of the given command. There is no way to override this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) * - Data transfers are limited to PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) * - The length (x + y) must be at least OMAX_SB_LEN bytes long to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) * accommodate the sense buffer when an error occurs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) * old code will not be surprised.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) * - If a Unix error occurs (e.g. ENOMEM) then the user will receive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) * a negative return and the Unix error code in 'errno'.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) * If the SCSI command succeeds then 0 is returned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) * Positive numbers returned are the compacted SCSI error codes (4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) * bytes in one int) where the lowest byte is the SCSI status.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) struct scsi_ioctl_command __user *sic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) enum { OMAX_SB_LEN = 16 }; /* For backward compatibility */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) struct scsi_request *req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) unsigned int in_len, out_len, bytes, opcode, cmdlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) char *buffer = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (!sic)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) * get in an out lengths, verify they don't exceed a page worth of data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) if (get_user(in_len, &sic->inlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) if (get_user(out_len, &sic->outlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (get_user(opcode, sic->data))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) bytes = max(in_len, out_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (bytes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) if (!buffer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) rq = blk_get_request(q, in_len ? REQ_OP_SCSI_OUT : REQ_OP_SCSI_IN, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) if (IS_ERR(rq)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) err = PTR_ERR(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) goto error_free_buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) req = scsi_req(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) cmdlen = COMMAND_SIZE(opcode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) * get command and data to send to device, if any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) req->cmd_len = cmdlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) if (copy_from_user(req->cmd, sic->data, cmdlen))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) err = blk_verify_command(req->cmd, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) /* default. possible overriden later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) req->retries = 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) switch (opcode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) case SEND_DIAGNOSTIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) case FORMAT_UNIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) rq->timeout = FORMAT_UNIT_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) req->retries = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) case START_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) rq->timeout = START_STOP_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) case MOVE_MEDIUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) rq->timeout = MOVE_MEDIUM_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) case READ_ELEMENT_STATUS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) rq->timeout = READ_ELEMENT_STATUS_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) case READ_DEFECT_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) rq->timeout = READ_DEFECT_DATA_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) req->retries = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, GFP_NOIO)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) err = DRIVER_ERROR << 24;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) blk_execute_rq(q, disk, rq, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) err = req->result & 0xff; /* only 8 bit SCSI status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (req->sense_len && req->sense) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) bytes = (OMAX_SB_LEN > req->sense_len) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) req->sense_len : OMAX_SB_LEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (copy_to_user(sic->data, req->sense, bytes))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (copy_to_user(sic->data, buffer, out_len))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) blk_put_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) error_free_buffer:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) kfree(buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /* Send basic block requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) int cmd, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) struct request *rq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) rq = blk_get_request(q, REQ_OP_SCSI_OUT, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (IS_ERR(rq))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return PTR_ERR(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) scsi_req(rq)->cmd[0] = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) scsi_req(rq)->cmd[4] = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) scsi_req(rq)->cmd_len = 6;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) blk_execute_rq(q, bd_disk, rq, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) err = scsi_req(rq)->result ? -EIO : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) blk_put_request(rq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) static inline int blk_send_start_stop(struct request_queue *q,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) struct gendisk *bd_disk, int data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (in_compat_syscall()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) struct compat_sg_io_hdr hdr32 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) .interface_id = hdr->interface_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) .dxfer_direction = hdr->dxfer_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) .cmd_len = hdr->cmd_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) .mx_sb_len = hdr->mx_sb_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) .iovec_count = hdr->iovec_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) .dxfer_len = hdr->dxfer_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) .dxferp = (uintptr_t)hdr->dxferp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) .cmdp = (uintptr_t)hdr->cmdp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) .sbp = (uintptr_t)hdr->sbp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) .timeout = hdr->timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) .flags = hdr->flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) .pack_id = hdr->pack_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) .usr_ptr = (uintptr_t)hdr->usr_ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) .status = hdr->status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) .masked_status = hdr->masked_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) .msg_status = hdr->msg_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) .sb_len_wr = hdr->sb_len_wr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) .host_status = hdr->host_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) .driver_status = hdr->driver_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) .resid = hdr->resid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) .duration = hdr->duration,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) .info = hdr->info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) if (copy_to_user(argp, &hdr32, sizeof(hdr32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) if (copy_to_user(argp, hdr, sizeof(*hdr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) EXPORT_SYMBOL(put_sg_io_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) int get_sg_io_hdr(struct sg_io_hdr *hdr, const void __user *argp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) struct compat_sg_io_hdr hdr32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) if (in_compat_syscall()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (copy_from_user(&hdr32, argp, sizeof(hdr32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) *hdr = (struct sg_io_hdr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) .interface_id = hdr32.interface_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) .dxfer_direction = hdr32.dxfer_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) .cmd_len = hdr32.cmd_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) .mx_sb_len = hdr32.mx_sb_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) .iovec_count = hdr32.iovec_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) .dxfer_len = hdr32.dxfer_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) .dxferp = compat_ptr(hdr32.dxferp),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) .cmdp = compat_ptr(hdr32.cmdp),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) .sbp = compat_ptr(hdr32.sbp),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) .timeout = hdr32.timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) .flags = hdr32.flags,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) .pack_id = hdr32.pack_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) .usr_ptr = compat_ptr(hdr32.usr_ptr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) .status = hdr32.status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) .masked_status = hdr32.masked_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) .msg_status = hdr32.msg_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) .sb_len_wr = hdr32.sb_len_wr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) .host_status = hdr32.host_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) .driver_status = hdr32.driver_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) .resid = hdr32.resid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) .duration = hdr32.duration,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) .info = hdr32.info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) if (copy_from_user(hdr, argp, sizeof(*hdr)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) EXPORT_SYMBOL(get_sg_io_hdr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) struct compat_cdrom_generic_command {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) unsigned char cmd[CDROM_PACKET_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) compat_caddr_t buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) compat_uint_t buflen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) compat_int_t stat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) compat_caddr_t sense;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) unsigned char data_direction;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) unsigned char pad[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) compat_int_t quiet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) compat_int_t timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) compat_caddr_t unused;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) static int scsi_get_cdrom_generic_arg(struct cdrom_generic_command *cgc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) const void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (in_compat_syscall()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) struct compat_cdrom_generic_command cgc32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) if (copy_from_user(&cgc32, arg, sizeof(cgc32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) *cgc = (struct cdrom_generic_command) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) .buffer = compat_ptr(cgc32.buffer),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) .buflen = cgc32.buflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) .stat = cgc32.stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) .sense = compat_ptr(cgc32.sense),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) .data_direction = cgc32.data_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) .quiet = cgc32.quiet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) .timeout = cgc32.timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) .unused = compat_ptr(cgc32.unused),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) memcpy(&cgc->cmd, &cgc32.cmd, CDROM_PACKET_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (copy_from_user(cgc, arg, sizeof(*cgc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) static int scsi_put_cdrom_generic_arg(const struct cdrom_generic_command *cgc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) #ifdef CONFIG_COMPAT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) if (in_compat_syscall()) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) struct compat_cdrom_generic_command cgc32 = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) .buffer = (uintptr_t)(cgc->buffer),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) .buflen = cgc->buflen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) .stat = cgc->stat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) .sense = (uintptr_t)(cgc->sense),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) .data_direction = cgc->data_direction,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) .quiet = cgc->quiet,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) .timeout = cgc->timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) .unused = (uintptr_t)(cgc->unused),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) memcpy(&cgc32.cmd, &cgc->cmd, CDROM_PACKET_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) if (copy_to_user(arg, &cgc32, sizeof(cgc32)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) if (copy_to_user(arg, cgc, sizeof(*cgc)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) static int scsi_cdrom_send_packet(struct request_queue *q,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct gendisk *bd_disk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) fmode_t mode, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) struct cdrom_generic_command cgc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) struct sg_io_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) err = scsi_get_cdrom_generic_arg(&cgc, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) cgc.timeout = clock_t_to_jiffies(cgc.timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) memset(&hdr, 0, sizeof(hdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) hdr.interface_id = 'S';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) hdr.cmd_len = sizeof(cgc.cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) hdr.dxfer_len = cgc.buflen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) switch (cgc.data_direction) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) case CGC_DATA_UNKNOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) hdr.dxfer_direction = SG_DXFER_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) case CGC_DATA_WRITE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) hdr.dxfer_direction = SG_DXFER_TO_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) case CGC_DATA_READ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) hdr.dxfer_direction = SG_DXFER_FROM_DEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) case CGC_DATA_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) hdr.dxfer_direction = SG_DXFER_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) hdr.dxferp = cgc.buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) hdr.sbp = cgc.sense;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) if (hdr.sbp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) hdr.mx_sb_len = sizeof(struct request_sense);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) hdr.timeout = jiffies_to_msecs(cgc.timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) hdr.cmd_len = sizeof(cgc.cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) err = sg_io(q, bd_disk, &hdr, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (err == -EFAULT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (hdr.status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) cgc.stat = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) cgc.buflen = hdr.resid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) if (scsi_put_cdrom_generic_arg(&cgc, arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) unsigned int cmd, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (!q)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) return -ENXIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) * new sgv3 interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) case SG_GET_VERSION_NUM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) err = sg_get_version(arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) case SCSI_IOCTL_GET_IDLUN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) err = scsi_get_idlun(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) case SCSI_IOCTL_GET_BUS_NUMBER:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) err = scsi_get_bus(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) case SG_SET_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) err = sg_set_timeout(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) case SG_GET_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) err = sg_get_timeout(q);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) case SG_GET_RESERVED_SIZE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) err = sg_get_reserved_size(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) case SG_SET_RESERVED_SIZE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) err = sg_set_reserved_size(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) case SG_EMULATED_HOST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) err = sg_emulated_host(q, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) case SG_IO: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) struct sg_io_hdr hdr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) err = get_sg_io_hdr(&hdr, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) err = sg_io(q, bd_disk, &hdr, mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) if (err == -EFAULT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) if (put_sg_io_hdr(&hdr, arg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) err = -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) case CDROM_SEND_PACKET:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) err = scsi_cdrom_send_packet(q, bd_disk, mode, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) * old junk scsi send command ioctl
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) case SCSI_IOCTL_SEND_COMMAND:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) if (!arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) err = sg_scsi_ioctl(q, bd_disk, mode, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) case CDROMCLOSETRAY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) err = blk_send_start_stop(q, bd_disk, 0x03);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) case CDROMEJECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) err = blk_send_start_stop(q, bd_disk, 0x02);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) err = -ENOTTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) EXPORT_SYMBOL(scsi_cmd_ioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) int scsi_verify_blk_ioctl(struct block_device *bd, unsigned int cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (bd && !bdev_is_partition(bd))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) if (capable(CAP_SYS_RAWIO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) EXPORT_SYMBOL(scsi_verify_blk_ioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) int scsi_cmd_blk_ioctl(struct block_device *bd, fmode_t mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) unsigned int cmd, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) ret = scsi_verify_blk_ioctl(bd, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) return scsi_cmd_ioctl(bd->bd_disk->queue, bd->bd_disk, mode, cmd, arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) EXPORT_SYMBOL(scsi_cmd_blk_ioctl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) * scsi_req_init - initialize certain fields of a scsi_request structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) * @req: Pointer to a scsi_request structure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) * Initializes .__cmd[], .cmd, .cmd_len and .sense_len but no other members
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) * of struct scsi_request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) void scsi_req_init(struct scsi_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) memset(req->__cmd, 0, sizeof(req->__cmd));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) req->cmd = req->__cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) req->cmd_len = BLK_MAX_CDB;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) req->sense_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) EXPORT_SYMBOL(scsi_req_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) static int __init blk_scsi_ioctl_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) fs_initcall(blk_scsi_ioctl_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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