Doug / smarc-fsl-linux-kernel

Download as
Browse Code ยป

Commit 476d42f138ba82389a92a894d8a630a70d36278f

Authored by H Hartley Sweeten
Committed by Jens Axboe
1 parent cc56f7de7f
Exists in master and in 7 other branches imx_3.0.35_4.1.0, imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga, smarc-l5.0.0_1.0.0-ga

block/scsi_ioctl.c: quiet sparse noise 

Quiet sparse noise about symbol's not being declared.

Symbol blk_default_cmd_filter is only used locally and should be static.

The function blk_scsi_ioctl_init() is a fs_initcall and should also be
static.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Showing 1 changed file with 4 additions and 2 deletions Inline Diff

1 /* 1 /*
2 * Copyright (C) 2001 Jens Axboe <axboe@suse.de> 2 * Copyright (C) 2001 Jens Axboe <axboe@suse.de>
3 * 3 *
4 * This program is free software; you can redistribute it and/or modify 4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as 5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation. 6 * published by the Free Software Foundation.
7 * 7 *
8 * This program is distributed in the hope that it will be useful, 8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of 9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * 10 *
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details. 12 * GNU General Public License for more details.
13 * 13 *
14 * You should have received a copy of the GNU General Public Licens 14 * You should have received a copy of the GNU General Public Licens
15 * along with this program; if not, write to the Free Software 15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111- 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-
17 * 17 *
18 */ 18 */
19 #include <linux/kernel.h> 19 #include <linux/kernel.h>
20 #include <linux/errno.h> 20 #include <linux/errno.h>
21 #include <linux/string.h> 21 #include <linux/string.h>
22 #include <linux/module.h> 22 #include <linux/module.h>
23 #include <linux/blkdev.h> 23 #include <linux/blkdev.h>
24 #include <linux/capability.h> 24 #include <linux/capability.h>
25 #include <linux/completion.h> 25 #include <linux/completion.h>
26 #include <linux/cdrom.h> 26 #include <linux/cdrom.h>
27 #include <linux/slab.h> 27 #include <linux/slab.h>
28 #include <linux/times.h> 28 #include <linux/times.h>
29 #include <asm/uaccess.h> 29 #include <asm/uaccess.h>
30 30
31 #include <scsi/scsi.h> 31 #include <scsi/scsi.h>
32 #include <scsi/scsi_ioctl.h> 32 #include <scsi/scsi_ioctl.h>
33 #include <scsi/scsi_cmnd.h> 33 #include <scsi/scsi_cmnd.h>
34 34
35 struct blk_cmd_filter { 35 struct blk_cmd_filter {
36 unsigned long read_ok[BLK_SCSI_CMD_PER_LONG]; 36 unsigned long read_ok[BLK_SCSI_CMD_PER_LONG];
37 unsigned long write_ok[BLK_SCSI_CMD_PER_LONG]; 37 unsigned long write_ok[BLK_SCSI_CMD_PER_LONG];
38 } blk_default_cmd_filter; 38 };
39 39
40 static struct blk_cmd_filter blk_default_cmd_filter;
41
40 /* Command group 3 is reserved and should never be used. */ 42 /* Command group 3 is reserved and should never be used. */
41 const unsigned char scsi_command_size_tbl[8] = 43 const unsigned char scsi_command_size_tbl[8] =
42 { 44 {
43 6, 10, 10, 12, 45 6, 10, 10, 12,
44 16, 12, 10, 10 46 16, 12, 10, 10
45 }; 47 };
46 EXPORT_SYMBOL(scsi_command_size_tbl); 48 EXPORT_SYMBOL(scsi_command_size_tbl);
47 49
48 #include <scsi/sg.h> 50 #include <scsi/sg.h>
49 51
50 static int sg_get_version(int __user *p) 52 static int sg_get_version(int __user *p)
51 { 53 {
52 static const int sg_version_num = 30527; 54 static const int sg_version_num = 30527;
53 return put_user(sg_version_num, p); 55 return put_user(sg_version_num, p);
54 } 56 }
55 57
56 static int scsi_get_idlun(struct request_queue *q, int __user *p) 58 static int scsi_get_idlun(struct request_queue *q, int __user *p)
57 { 59 {
58 return put_user(0, p); 60 return put_user(0, p);
59 } 61 }
60 62
61 static int scsi_get_bus(struct request_queue *q, int __user *p) 63 static int scsi_get_bus(struct request_queue *q, int __user *p)
62 { 64 {
63 return put_user(0, p); 65 return put_user(0, p);
64 } 66 }
65 67
66 static int sg_get_timeout(struct request_queue *q) 68 static int sg_get_timeout(struct request_queue *q)
67 { 69 {
68 return jiffies_to_clock_t(q->sg_timeout); 70 return jiffies_to_clock_t(q->sg_timeout);
69 } 71 }
70 72
71 static int sg_set_timeout(struct request_queue *q, int __user *p) 73 static int sg_set_timeout(struct request_queue *q, int __user *p)
72 { 74 {
73 int timeout, err = get_user(timeout, p); 75 int timeout, err = get_user(timeout, p);
74 76
75 if (!err) 77 if (!err)
76 q->sg_timeout = clock_t_to_jiffies(timeout); 78 q->sg_timeout = clock_t_to_jiffies(timeout);
77 79
78 return err; 80 return err;
79 } 81 }
80 82
81 static int sg_get_reserved_size(struct request_queue *q, int __user *p) 83 static int sg_get_reserved_size(struct request_queue *q, int __user *p)
82 { 84 {
83 unsigned val = min(q->sg_reserved_size, queue_max_sectors(q) << 9); 85 unsigned val = min(q->sg_reserved_size, queue_max_sectors(q) << 9);
84 86
85 return put_user(val, p); 87 return put_user(val, p);
86 } 88 }
87 89
88 static int sg_set_reserved_size(struct request_queue *q, int __user *p) 90 static int sg_set_reserved_size(struct request_queue *q, int __user *p)
89 { 91 {
90 int size, err = get_user(size, p); 92 int size, err = get_user(size, p);
91 93
92 if (err) 94 if (err)
93 return err; 95 return err;
94 96
95 if (size < 0) 97 if (size < 0)
96 return -EINVAL; 98 return -EINVAL;
97 if (size > (queue_max_sectors(q) << 9)) 99 if (size > (queue_max_sectors(q) << 9))
98 size = queue_max_sectors(q) << 9; 100 size = queue_max_sectors(q) << 9;
99 101
100 q->sg_reserved_size = size; 102 q->sg_reserved_size = size;
101 return 0; 103 return 0;
102 } 104 }
103 105
104 /* 106 /*
105 * will always return that we are ATAPI even for a real SCSI drive, I'm not 107 * will always return that we are ATAPI even for a real SCSI drive, I'm not
106 * so sure this is worth doing anything about (why would you care??) 108 * so sure this is worth doing anything about (why would you care??)
107 */ 109 */
108 static int sg_emulated_host(struct request_queue *q, int __user *p) 110 static int sg_emulated_host(struct request_queue *q, int __user *p)
109 { 111 {
110 return put_user(1, p); 112 return put_user(1, p);
111 } 113 }
112 114
113 static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter) 115 static void blk_set_cmd_filter_defaults(struct blk_cmd_filter *filter)
114 { 116 {
115 /* Basic read-only commands */ 117 /* Basic read-only commands */
116 __set_bit(TEST_UNIT_READY, filter->read_ok); 118 __set_bit(TEST_UNIT_READY, filter->read_ok);
117 __set_bit(REQUEST_SENSE, filter->read_ok); 119 __set_bit(REQUEST_SENSE, filter->read_ok);
118 __set_bit(READ_6, filter->read_ok); 120 __set_bit(READ_6, filter->read_ok);
119 __set_bit(READ_10, filter->read_ok); 121 __set_bit(READ_10, filter->read_ok);
120 __set_bit(READ_12, filter->read_ok); 122 __set_bit(READ_12, filter->read_ok);
121 __set_bit(READ_16, filter->read_ok); 123 __set_bit(READ_16, filter->read_ok);
122 __set_bit(READ_BUFFER, filter->read_ok); 124 __set_bit(READ_BUFFER, filter->read_ok);
123 __set_bit(READ_DEFECT_DATA, filter->read_ok); 125 __set_bit(READ_DEFECT_DATA, filter->read_ok);
124 __set_bit(READ_CAPACITY, filter->read_ok); 126 __set_bit(READ_CAPACITY, filter->read_ok);
125 __set_bit(READ_LONG, filter->read_ok); 127 __set_bit(READ_LONG, filter->read_ok);
126 __set_bit(INQUIRY, filter->read_ok); 128 __set_bit(INQUIRY, filter->read_ok);
127 __set_bit(MODE_SENSE, filter->read_ok); 129 __set_bit(MODE_SENSE, filter->read_ok);
128 __set_bit(MODE_SENSE_10, filter->read_ok); 130 __set_bit(MODE_SENSE_10, filter->read_ok);
129 __set_bit(LOG_SENSE, filter->read_ok); 131 __set_bit(LOG_SENSE, filter->read_ok);
130 __set_bit(START_STOP, filter->read_ok); 132 __set_bit(START_STOP, filter->read_ok);
131 __set_bit(GPCMD_VERIFY_10, filter->read_ok); 133 __set_bit(GPCMD_VERIFY_10, filter->read_ok);
132 __set_bit(VERIFY_16, filter->read_ok); 134 __set_bit(VERIFY_16, filter->read_ok);
133 __set_bit(REPORT_LUNS, filter->read_ok); 135 __set_bit(REPORT_LUNS, filter->read_ok);
134 __set_bit(SERVICE_ACTION_IN, filter->read_ok); 136 __set_bit(SERVICE_ACTION_IN, filter->read_ok);
135 __set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok); 137 __set_bit(RECEIVE_DIAGNOSTIC, filter->read_ok);
136 __set_bit(MAINTENANCE_IN, filter->read_ok); 138 __set_bit(MAINTENANCE_IN, filter->read_ok);
137 __set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok); 139 __set_bit(GPCMD_READ_BUFFER_CAPACITY, filter->read_ok);
138 140
139 /* Audio CD commands */ 141 /* Audio CD commands */
140 __set_bit(GPCMD_PLAY_CD, filter->read_ok); 142 __set_bit(GPCMD_PLAY_CD, filter->read_ok);
141 __set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok); 143 __set_bit(GPCMD_PLAY_AUDIO_10, filter->read_ok);
142 __set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok); 144 __set_bit(GPCMD_PLAY_AUDIO_MSF, filter->read_ok);
143 __set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok); 145 __set_bit(GPCMD_PLAY_AUDIO_TI, filter->read_ok);
144 __set_bit(GPCMD_PAUSE_RESUME, filter->read_ok); 146 __set_bit(GPCMD_PAUSE_RESUME, filter->read_ok);
145 147
146 /* CD/DVD data reading */ 148 /* CD/DVD data reading */
147 __set_bit(GPCMD_READ_CD, filter->read_ok); 149 __set_bit(GPCMD_READ_CD, filter->read_ok);
148 __set_bit(GPCMD_READ_CD_MSF, filter->read_ok); 150 __set_bit(GPCMD_READ_CD_MSF, filter->read_ok);
149 __set_bit(GPCMD_READ_DISC_INFO, filter->read_ok); 151 __set_bit(GPCMD_READ_DISC_INFO, filter->read_ok);
150 __set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok); 152 __set_bit(GPCMD_READ_CDVD_CAPACITY, filter->read_ok);
151 __set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok); 153 __set_bit(GPCMD_READ_DVD_STRUCTURE, filter->read_ok);
152 __set_bit(GPCMD_READ_HEADER, filter->read_ok); 154 __set_bit(GPCMD_READ_HEADER, filter->read_ok);
153 __set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok); 155 __set_bit(GPCMD_READ_TRACK_RZONE_INFO, filter->read_ok);
154 __set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok); 156 __set_bit(GPCMD_READ_SUBCHANNEL, filter->read_ok);
155 __set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok); 157 __set_bit(GPCMD_READ_TOC_PMA_ATIP, filter->read_ok);
156 __set_bit(GPCMD_REPORT_KEY, filter->read_ok); 158 __set_bit(GPCMD_REPORT_KEY, filter->read_ok);
157 __set_bit(GPCMD_SCAN, filter->read_ok); 159 __set_bit(GPCMD_SCAN, filter->read_ok);
158 __set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok); 160 __set_bit(GPCMD_GET_CONFIGURATION, filter->read_ok);
159 __set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok); 161 __set_bit(GPCMD_READ_FORMAT_CAPACITIES, filter->read_ok);
160 __set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok); 162 __set_bit(GPCMD_GET_EVENT_STATUS_NOTIFICATION, filter->read_ok);
161 __set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok); 163 __set_bit(GPCMD_GET_PERFORMANCE, filter->read_ok);
162 __set_bit(GPCMD_SEEK, filter->read_ok); 164 __set_bit(GPCMD_SEEK, filter->read_ok);
163 __set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok); 165 __set_bit(GPCMD_STOP_PLAY_SCAN, filter->read_ok);
164 166
165 /* Basic writing commands */ 167 /* Basic writing commands */
166 __set_bit(WRITE_6, filter->write_ok); 168 __set_bit(WRITE_6, filter->write_ok);
167 __set_bit(WRITE_10, filter->write_ok); 169 __set_bit(WRITE_10, filter->write_ok);
168 __set_bit(WRITE_VERIFY, filter->write_ok); 170 __set_bit(WRITE_VERIFY, filter->write_ok);
169 __set_bit(WRITE_12, filter->write_ok); 171 __set_bit(WRITE_12, filter->write_ok);
170 __set_bit(WRITE_VERIFY_12, filter->write_ok); 172 __set_bit(WRITE_VERIFY_12, filter->write_ok);
171 __set_bit(WRITE_16, filter->write_ok); 173 __set_bit(WRITE_16, filter->write_ok);
172 __set_bit(WRITE_LONG, filter->write_ok); 174 __set_bit(WRITE_LONG, filter->write_ok);
173 __set_bit(WRITE_LONG_2, filter->write_ok); 175 __set_bit(WRITE_LONG_2, filter->write_ok);
174 __set_bit(ERASE, filter->write_ok); 176 __set_bit(ERASE, filter->write_ok);
175 __set_bit(GPCMD_MODE_SELECT_10, filter->write_ok); 177 __set_bit(GPCMD_MODE_SELECT_10, filter->write_ok);
176 __set_bit(MODE_SELECT, filter->write_ok); 178 __set_bit(MODE_SELECT, filter->write_ok);
177 __set_bit(LOG_SELECT, filter->write_ok); 179 __set_bit(LOG_SELECT, filter->write_ok);
178 __set_bit(GPCMD_BLANK, filter->write_ok); 180 __set_bit(GPCMD_BLANK, filter->write_ok);
179 __set_bit(GPCMD_CLOSE_TRACK, filter->write_ok); 181 __set_bit(GPCMD_CLOSE_TRACK, filter->write_ok);
180 __set_bit(GPCMD_FLUSH_CACHE, filter->write_ok); 182 __set_bit(GPCMD_FLUSH_CACHE, filter->write_ok);
181 __set_bit(GPCMD_FORMAT_UNIT, filter->write_ok); 183 __set_bit(GPCMD_FORMAT_UNIT, filter->write_ok);
182 __set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok); 184 __set_bit(GPCMD_REPAIR_RZONE_TRACK, filter->write_ok);
183 __set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok); 185 __set_bit(GPCMD_RESERVE_RZONE_TRACK, filter->write_ok);
184 __set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok); 186 __set_bit(GPCMD_SEND_DVD_STRUCTURE, filter->write_ok);
185 __set_bit(GPCMD_SEND_EVENT, filter->write_ok); 187 __set_bit(GPCMD_SEND_EVENT, filter->write_ok);
186 __set_bit(GPCMD_SEND_KEY, filter->write_ok); 188 __set_bit(GPCMD_SEND_KEY, filter->write_ok);
187 __set_bit(GPCMD_SEND_OPC, filter->write_ok); 189 __set_bit(GPCMD_SEND_OPC, filter->write_ok);
188 __set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok); 190 __set_bit(GPCMD_SEND_CUE_SHEET, filter->write_ok);
189 __set_bit(GPCMD_SET_SPEED, filter->write_ok); 191 __set_bit(GPCMD_SET_SPEED, filter->write_ok);
190 __set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok); 192 __set_bit(GPCMD_PREVENT_ALLOW_MEDIUM_REMOVAL, filter->write_ok);
191 __set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok); 193 __set_bit(GPCMD_LOAD_UNLOAD, filter->write_ok);
192 __set_bit(GPCMD_SET_STREAMING, filter->write_ok); 194 __set_bit(GPCMD_SET_STREAMING, filter->write_ok);
193 __set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok); 195 __set_bit(GPCMD_SET_READ_AHEAD, filter->write_ok);
194 } 196 }
195 197
196 int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm) 198 int blk_verify_command(unsigned char *cmd, fmode_t has_write_perm)
197 { 199 {
198 struct blk_cmd_filter *filter = &blk_default_cmd_filter; 200 struct blk_cmd_filter *filter = &blk_default_cmd_filter;
199 201
200 /* root can do any command. */ 202 /* root can do any command. */
201 if (capable(CAP_SYS_RAWIO)) 203 if (capable(CAP_SYS_RAWIO))
202 return 0; 204 return 0;
203 205
204 /* if there's no filter set, assume we're filtering everything out */ 206 /* if there's no filter set, assume we're filtering everything out */
205 if (!filter) 207 if (!filter)
206 return -EPERM; 208 return -EPERM;
207 209
208 /* Anybody who can open the device can do a read-safe command */ 210 /* Anybody who can open the device can do a read-safe command */
209 if (test_bit(cmd[0], filter->read_ok)) 211 if (test_bit(cmd[0], filter->read_ok))
210 return 0; 212 return 0;
211 213
212 /* Write-safe commands require a writable open */ 214 /* Write-safe commands require a writable open */
213 if (test_bit(cmd[0], filter->write_ok) && has_write_perm) 215 if (test_bit(cmd[0], filter->write_ok) && has_write_perm)
214 return 0; 216 return 0;
215 217
216 return -EPERM; 218 return -EPERM;
217 } 219 }
218 EXPORT_SYMBOL(blk_verify_command); 220 EXPORT_SYMBOL(blk_verify_command);
219 221
220 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq, 222 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
221 struct sg_io_hdr *hdr, fmode_t mode) 223 struct sg_io_hdr *hdr, fmode_t mode)
222 { 224 {
223 if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len)) 225 if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
224 return -EFAULT; 226 return -EFAULT;
225 if (blk_verify_command(rq->cmd, mode & FMODE_WRITE)) 227 if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
226 return -EPERM; 228 return -EPERM;
227 229
228 /* 230 /*
229 * fill in request structure 231 * fill in request structure
230 */ 232 */
231 rq->cmd_len = hdr->cmd_len; 233 rq->cmd_len = hdr->cmd_len;
232 rq->cmd_type = REQ_TYPE_BLOCK_PC; 234 rq->cmd_type = REQ_TYPE_BLOCK_PC;
233 235
234 rq->timeout = msecs_to_jiffies(hdr->timeout); 236 rq->timeout = msecs_to_jiffies(hdr->timeout);
235 if (!rq->timeout) 237 if (!rq->timeout)
236 rq->timeout = q->sg_timeout; 238 rq->timeout = q->sg_timeout;
237 if (!rq->timeout) 239 if (!rq->timeout)
238 rq->timeout = BLK_DEFAULT_SG_TIMEOUT; 240 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
239 if (rq->timeout < BLK_MIN_SG_TIMEOUT) 241 if (rq->timeout < BLK_MIN_SG_TIMEOUT)
240 rq->timeout = BLK_MIN_SG_TIMEOUT; 242 rq->timeout = BLK_MIN_SG_TIMEOUT;
241 243
242 return 0; 244 return 0;
243 } 245 }
244 246
245 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr, 247 static int blk_complete_sghdr_rq(struct request *rq, struct sg_io_hdr *hdr,
246 struct bio *bio) 248 struct bio *bio)
247 { 249 {
248 int r, ret = 0; 250 int r, ret = 0;
249 251
250 /* 252 /*
251 * fill in all the output members 253 * fill in all the output members
252 */ 254 */
253 hdr->status = rq->errors & 0xff; 255 hdr->status = rq->errors & 0xff;
254 hdr->masked_status = status_byte(rq->errors); 256 hdr->masked_status = status_byte(rq->errors);
255 hdr->msg_status = msg_byte(rq->errors); 257 hdr->msg_status = msg_byte(rq->errors);
256 hdr->host_status = host_byte(rq->errors); 258 hdr->host_status = host_byte(rq->errors);
257 hdr->driver_status = driver_byte(rq->errors); 259 hdr->driver_status = driver_byte(rq->errors);
258 hdr->info = 0; 260 hdr->info = 0;
259 if (hdr->masked_status || hdr->host_status || hdr->driver_status) 261 if (hdr->masked_status || hdr->host_status || hdr->driver_status)
260 hdr->info |= SG_INFO_CHECK; 262 hdr->info |= SG_INFO_CHECK;
261 hdr->resid = rq->resid_len; 263 hdr->resid = rq->resid_len;
262 hdr->sb_len_wr = 0; 264 hdr->sb_len_wr = 0;
263 265
264 if (rq->sense_len && hdr->sbp) { 266 if (rq->sense_len && hdr->sbp) {
265 int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len); 267 int len = min((unsigned int) hdr->mx_sb_len, rq->sense_len);
266 268
267 if (!copy_to_user(hdr->sbp, rq->sense, len)) 269 if (!copy_to_user(hdr->sbp, rq->sense, len))
268 hdr->sb_len_wr = len; 270 hdr->sb_len_wr = len;
269 else 271 else
270 ret = -EFAULT; 272 ret = -EFAULT;
271 } 273 }
272 274
273 r = blk_rq_unmap_user(bio); 275 r = blk_rq_unmap_user(bio);
274 if (!ret) 276 if (!ret)
275 ret = r; 277 ret = r;
276 blk_put_request(rq); 278 blk_put_request(rq);
277 279
278 return ret; 280 return ret;
279 } 281 }
280 282
281 static int sg_io(struct request_queue *q, struct gendisk *bd_disk, 283 static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
282 struct sg_io_hdr *hdr, fmode_t mode) 284 struct sg_io_hdr *hdr, fmode_t mode)
283 { 285 {
284 unsigned long start_time; 286 unsigned long start_time;
285 int writing = 0, ret = 0; 287 int writing = 0, ret = 0;
286 struct request *rq; 288 struct request *rq;
287 char sense[SCSI_SENSE_BUFFERSIZE]; 289 char sense[SCSI_SENSE_BUFFERSIZE];
288 struct bio *bio; 290 struct bio *bio;
289 291
290 if (hdr->interface_id != 'S') 292 if (hdr->interface_id != 'S')
291 return -EINVAL; 293 return -EINVAL;
292 if (hdr->cmd_len > BLK_MAX_CDB) 294 if (hdr->cmd_len > BLK_MAX_CDB)
293 return -EINVAL; 295 return -EINVAL;
294 296
295 if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9)) 297 if (hdr->dxfer_len > (queue_max_hw_sectors(q) << 9))
296 return -EIO; 298 return -EIO;
297 299
298 if (hdr->dxfer_len) 300 if (hdr->dxfer_len)
299 switch (hdr->dxfer_direction) { 301 switch (hdr->dxfer_direction) {
300 default: 302 default:
301 return -EINVAL; 303 return -EINVAL;
302 case SG_DXFER_TO_DEV: 304 case SG_DXFER_TO_DEV:
303 writing = 1; 305 writing = 1;
304 break; 306 break;
305 case SG_DXFER_TO_FROM_DEV: 307 case SG_DXFER_TO_FROM_DEV:
306 case SG_DXFER_FROM_DEV: 308 case SG_DXFER_FROM_DEV:
307 break; 309 break;
308 } 310 }
309 311
310 rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL); 312 rq = blk_get_request(q, writing ? WRITE : READ, GFP_KERNEL);
311 if (!rq) 313 if (!rq)
312 return -ENOMEM; 314 return -ENOMEM;
313 315
314 if (blk_fill_sghdr_rq(q, rq, hdr, mode)) { 316 if (blk_fill_sghdr_rq(q, rq, hdr, mode)) {
315 blk_put_request(rq); 317 blk_put_request(rq);
316 return -EFAULT; 318 return -EFAULT;
317 } 319 }
318 320
319 if (hdr->iovec_count) { 321 if (hdr->iovec_count) {
320 const int size = sizeof(struct sg_iovec) * hdr->iovec_count; 322 const int size = sizeof(struct sg_iovec) * hdr->iovec_count;
321 size_t iov_data_len; 323 size_t iov_data_len;
322 struct sg_iovec *iov; 324 struct sg_iovec *iov;
323 325
324 iov = kmalloc(size, GFP_KERNEL); 326 iov = kmalloc(size, GFP_KERNEL);
325 if (!iov) { 327 if (!iov) {
326 ret = -ENOMEM; 328 ret = -ENOMEM;
327 goto out; 329 goto out;
328 } 330 }
329 331
330 if (copy_from_user(iov, hdr->dxferp, size)) { 332 if (copy_from_user(iov, hdr->dxferp, size)) {
331 kfree(iov); 333 kfree(iov);
332 ret = -EFAULT; 334 ret = -EFAULT;
333 goto out; 335 goto out;
334 } 336 }
335 337
336 /* SG_IO howto says that the shorter of the two wins */ 338 /* SG_IO howto says that the shorter of the two wins */
337 iov_data_len = iov_length((struct iovec *)iov, 339 iov_data_len = iov_length((struct iovec *)iov,
338 hdr->iovec_count); 340 hdr->iovec_count);
339 if (hdr->dxfer_len < iov_data_len) { 341 if (hdr->dxfer_len < iov_data_len) {
340 hdr->iovec_count = iov_shorten((struct iovec *)iov, 342 hdr->iovec_count = iov_shorten((struct iovec *)iov,
341 hdr->iovec_count, 343 hdr->iovec_count,
342 hdr->dxfer_len); 344 hdr->dxfer_len);
343 iov_data_len = hdr->dxfer_len; 345 iov_data_len = hdr->dxfer_len;
344 } 346 }
345 347
346 ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count, 348 ret = blk_rq_map_user_iov(q, rq, NULL, iov, hdr->iovec_count,
347 iov_data_len, GFP_KERNEL); 349 iov_data_len, GFP_KERNEL);
348 kfree(iov); 350 kfree(iov);
349 } else if (hdr->dxfer_len) 351 } else if (hdr->dxfer_len)
350 ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len, 352 ret = blk_rq_map_user(q, rq, NULL, hdr->dxferp, hdr->dxfer_len,
351 GFP_KERNEL); 353 GFP_KERNEL);
352 354
353 if (ret) 355 if (ret)
354 goto out; 356 goto out;
355 357
356 bio = rq->bio; 358 bio = rq->bio;
357 memset(sense, 0, sizeof(sense)); 359 memset(sense, 0, sizeof(sense));
358 rq->sense = sense; 360 rq->sense = sense;
359 rq->sense_len = 0; 361 rq->sense_len = 0;
360 rq->retries = 0; 362 rq->retries = 0;
361 363
362 start_time = jiffies; 364 start_time = jiffies;
363 365
364 /* ignore return value. All information is passed back to caller 366 /* ignore return value. All information is passed back to caller
365 * (if he doesn't check that is his problem). 367 * (if he doesn't check that is his problem).
366 * N.B. a non-zero SCSI status is _not_ necessarily an error. 368 * N.B. a non-zero SCSI status is _not_ necessarily an error.
367 */ 369 */
368 blk_execute_rq(q, bd_disk, rq, 0); 370 blk_execute_rq(q, bd_disk, rq, 0);
369 371
370 hdr->duration = jiffies_to_msecs(jiffies - start_time); 372 hdr->duration = jiffies_to_msecs(jiffies - start_time);
371 373
372 return blk_complete_sghdr_rq(rq, hdr, bio); 374 return blk_complete_sghdr_rq(rq, hdr, bio);
373 out: 375 out:
374 blk_put_request(rq); 376 blk_put_request(rq);
375 return ret; 377 return ret;
376 } 378 }
377 379
378 /** 380 /**
379 * sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl 381 * sg_scsi_ioctl -- handle deprecated SCSI_IOCTL_SEND_COMMAND ioctl
380 * @file: file this ioctl operates on (optional) 382 * @file: file this ioctl operates on (optional)
381 * @q: request queue to send scsi commands down 383 * @q: request queue to send scsi commands down
382 * @disk: gendisk to operate on (option) 384 * @disk: gendisk to operate on (option)
383 * @sic: userspace structure describing the command to perform 385 * @sic: userspace structure describing the command to perform
384 * 386 *
385 * Send down the scsi command described by @sic to the device below 387 * Send down the scsi command described by @sic to the device below
386 * the request queue @q. If @file is non-NULL it's used to perform 388 * the request queue @q. If @file is non-NULL it's used to perform
387 * fine-grained permission checks that allow users to send down 389 * fine-grained permission checks that allow users to send down
388 * non-destructive SCSI commands. If the caller has a struct gendisk 390 * non-destructive SCSI commands. If the caller has a struct gendisk
389 * available it should be passed in as @disk to allow the low level 391 * available it should be passed in as @disk to allow the low level
390 * driver to use the information contained in it. A non-NULL @disk 392 * driver to use the information contained in it. A non-NULL @disk
391 * is only allowed if the caller knows that the low level driver doesn't 393 * is only allowed if the caller knows that the low level driver doesn't
392 * need it (e.g. in the scsi subsystem). 394 * need it (e.g. in the scsi subsystem).
393 * 395 *
394 * Notes: 396 * Notes:
395 * - This interface is deprecated - users should use the SG_IO 397 * - This interface is deprecated - users should use the SG_IO
396 * interface instead, as this is a more flexible approach to 398 * interface instead, as this is a more flexible approach to
397 * performing SCSI commands on a device. 399 * performing SCSI commands on a device.
398 * - The SCSI command length is determined by examining the 1st byte 400 * - The SCSI command length is determined by examining the 1st byte
399 * of the given command. There is no way to override this. 401 * of the given command. There is no way to override this.
400 * - Data transfers are limited to PAGE_SIZE 402 * - Data transfers are limited to PAGE_SIZE
401 * - The length (x + y) must be at least OMAX_SB_LEN bytes long to 403 * - The length (x + y) must be at least OMAX_SB_LEN bytes long to
402 * accommodate the sense buffer when an error occurs. 404 * accommodate the sense buffer when an error occurs.
403 * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that 405 * The sense buffer is truncated to OMAX_SB_LEN (16) bytes so that
404 * old code will not be surprised. 406 * old code will not be surprised.
405 * - If a Unix error occurs (e.g. ENOMEM) then the user will receive 407 * - If a Unix error occurs (e.g. ENOMEM) then the user will receive
406 * a negative return and the Unix error code in 'errno'. 408 * a negative return and the Unix error code in 'errno'.
407 * If the SCSI command succeeds then 0 is returned. 409 * If the SCSI command succeeds then 0 is returned.
408 * Positive numbers returned are the compacted SCSI error codes (4 410 * Positive numbers returned are the compacted SCSI error codes (4
409 * bytes in one int) where the lowest byte is the SCSI status. 411 * bytes in one int) where the lowest byte is the SCSI status.
410 */ 412 */
411 #define OMAX_SB_LEN 16 /* For backward compatibility */ 413 #define OMAX_SB_LEN 16 /* For backward compatibility */
412 int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode, 414 int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
413 struct scsi_ioctl_command __user *sic) 415 struct scsi_ioctl_command __user *sic)
414 { 416 {
415 struct request *rq; 417 struct request *rq;
416 int err; 418 int err;
417 unsigned int in_len, out_len, bytes, opcode, cmdlen; 419 unsigned int in_len, out_len, bytes, opcode, cmdlen;
418 char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE]; 420 char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
419 421
420 if (!sic) 422 if (!sic)
421 return -EINVAL; 423 return -EINVAL;
422 424
423 /* 425 /*
424 * get in an out lengths, verify they don't exceed a page worth of data 426 * get in an out lengths, verify they don't exceed a page worth of data
425 */ 427 */
426 if (get_user(in_len, &sic->inlen)) 428 if (get_user(in_len, &sic->inlen))
427 return -EFAULT; 429 return -EFAULT;
428 if (get_user(out_len, &sic->outlen)) 430 if (get_user(out_len, &sic->outlen))
429 return -EFAULT; 431 return -EFAULT;
430 if (in_len > PAGE_SIZE || out_len > PAGE_SIZE) 432 if (in_len > PAGE_SIZE || out_len > PAGE_SIZE)
431 return -EINVAL; 433 return -EINVAL;
432 if (get_user(opcode, sic->data)) 434 if (get_user(opcode, sic->data))
433 return -EFAULT; 435 return -EFAULT;
434 436
435 bytes = max(in_len, out_len); 437 bytes = max(in_len, out_len);
436 if (bytes) { 438 if (bytes) {
437 buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN); 439 buffer = kzalloc(bytes, q->bounce_gfp | GFP_USER| __GFP_NOWARN);
438 if (!buffer) 440 if (!buffer)
439 return -ENOMEM; 441 return -ENOMEM;
440 442
441 } 443 }
442 444
443 rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT); 445 rq = blk_get_request(q, in_len ? WRITE : READ, __GFP_WAIT);
444 446
445 cmdlen = COMMAND_SIZE(opcode); 447 cmdlen = COMMAND_SIZE(opcode);
446 448
447 /* 449 /*
448 * get command and data to send to device, if any 450 * get command and data to send to device, if any
449 */ 451 */
450 err = -EFAULT; 452 err = -EFAULT;
451 rq->cmd_len = cmdlen; 453 rq->cmd_len = cmdlen;
452 if (copy_from_user(rq->cmd, sic->data, cmdlen)) 454 if (copy_from_user(rq->cmd, sic->data, cmdlen))
453 goto error; 455 goto error;
454 456
455 if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len)) 457 if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
456 goto error; 458 goto error;
457 459
458 err = blk_verify_command(rq->cmd, mode & FMODE_WRITE); 460 err = blk_verify_command(rq->cmd, mode & FMODE_WRITE);
459 if (err) 461 if (err)
460 goto error; 462 goto error;
461 463
462 /* default. possible overriden later */ 464 /* default. possible overriden later */
463 rq->retries = 5; 465 rq->retries = 5;
464 466
465 switch (opcode) { 467 switch (opcode) {
466 case SEND_DIAGNOSTIC: 468 case SEND_DIAGNOSTIC:
467 case FORMAT_UNIT: 469 case FORMAT_UNIT:
468 rq->timeout = FORMAT_UNIT_TIMEOUT; 470 rq->timeout = FORMAT_UNIT_TIMEOUT;
469 rq->retries = 1; 471 rq->retries = 1;
470 break; 472 break;
471 case START_STOP: 473 case START_STOP:
472 rq->timeout = START_STOP_TIMEOUT; 474 rq->timeout = START_STOP_TIMEOUT;
473 break; 475 break;
474 case MOVE_MEDIUM: 476 case MOVE_MEDIUM:
475 rq->timeout = MOVE_MEDIUM_TIMEOUT; 477 rq->timeout = MOVE_MEDIUM_TIMEOUT;
476 break; 478 break;
477 case READ_ELEMENT_STATUS: 479 case READ_ELEMENT_STATUS:
478 rq->timeout = READ_ELEMENT_STATUS_TIMEOUT; 480 rq->timeout = READ_ELEMENT_STATUS_TIMEOUT;
479 break; 481 break;
480 case READ_DEFECT_DATA: 482 case READ_DEFECT_DATA:
481 rq->timeout = READ_DEFECT_DATA_TIMEOUT; 483 rq->timeout = READ_DEFECT_DATA_TIMEOUT;
482 rq->retries = 1; 484 rq->retries = 1;
483 break; 485 break;
484 default: 486 default:
485 rq->timeout = BLK_DEFAULT_SG_TIMEOUT; 487 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
486 break; 488 break;
487 } 489 }
488 490
489 if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) { 491 if (bytes && blk_rq_map_kern(q, rq, buffer, bytes, __GFP_WAIT)) {
490 err = DRIVER_ERROR << 24; 492 err = DRIVER_ERROR << 24;
491 goto out; 493 goto out;
492 } 494 }
493 495
494 memset(sense, 0, sizeof(sense)); 496 memset(sense, 0, sizeof(sense));
495 rq->sense = sense; 497 rq->sense = sense;
496 rq->sense_len = 0; 498 rq->sense_len = 0;
497 rq->cmd_type = REQ_TYPE_BLOCK_PC; 499 rq->cmd_type = REQ_TYPE_BLOCK_PC;
498 500
499 blk_execute_rq(q, disk, rq, 0); 501 blk_execute_rq(q, disk, rq, 0);
500 502
501 out: 503 out:
502 err = rq->errors & 0xff; /* only 8 bit SCSI status */ 504 err = rq->errors & 0xff; /* only 8 bit SCSI status */
503 if (err) { 505 if (err) {
504 if (rq->sense_len && rq->sense) { 506 if (rq->sense_len && rq->sense) {
505 bytes = (OMAX_SB_LEN > rq->sense_len) ? 507 bytes = (OMAX_SB_LEN > rq->sense_len) ?
506 rq->sense_len : OMAX_SB_LEN; 508 rq->sense_len : OMAX_SB_LEN;
507 if (copy_to_user(sic->data, rq->sense, bytes)) 509 if (copy_to_user(sic->data, rq->sense, bytes))
508 err = -EFAULT; 510 err = -EFAULT;
509 } 511 }
510 } else { 512 } else {
511 if (copy_to_user(sic->data, buffer, out_len)) 513 if (copy_to_user(sic->data, buffer, out_len))
512 err = -EFAULT; 514 err = -EFAULT;
513 } 515 }
514 516
515 error: 517 error:
516 kfree(buffer); 518 kfree(buffer);
517 blk_put_request(rq); 519 blk_put_request(rq);
518 return err; 520 return err;
519 } 521 }
520 EXPORT_SYMBOL_GPL(sg_scsi_ioctl); 522 EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
521 523
522 /* Send basic block requests */ 524 /* Send basic block requests */
523 static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk, 525 static int __blk_send_generic(struct request_queue *q, struct gendisk *bd_disk,
524 int cmd, int data) 526 int cmd, int data)
525 { 527 {
526 struct request *rq; 528 struct request *rq;
527 int err; 529 int err;
528 530
529 rq = blk_get_request(q, WRITE, __GFP_WAIT); 531 rq = blk_get_request(q, WRITE, __GFP_WAIT);
530 rq->cmd_type = REQ_TYPE_BLOCK_PC; 532 rq->cmd_type = REQ_TYPE_BLOCK_PC;
531 rq->timeout = BLK_DEFAULT_SG_TIMEOUT; 533 rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
532 rq->cmd[0] = cmd; 534 rq->cmd[0] = cmd;
533 rq->cmd[4] = data; 535 rq->cmd[4] = data;
534 rq->cmd_len = 6; 536 rq->cmd_len = 6;
535 err = blk_execute_rq(q, bd_disk, rq, 0); 537 err = blk_execute_rq(q, bd_disk, rq, 0);
536 blk_put_request(rq); 538 blk_put_request(rq);
537 539
538 return err; 540 return err;
539 } 541 }
540 542
541 static inline int blk_send_start_stop(struct request_queue *q, 543 static inline int blk_send_start_stop(struct request_queue *q,
542 struct gendisk *bd_disk, int data) 544 struct gendisk *bd_disk, int data)
543 { 545 {
544 return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data); 546 return __blk_send_generic(q, bd_disk, GPCMD_START_STOP_UNIT, data);
545 } 547 }
546 548
547 int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode, 549 int scsi_cmd_ioctl(struct request_queue *q, struct gendisk *bd_disk, fmode_t mode,
548 unsigned int cmd, void __user *arg) 550 unsigned int cmd, void __user *arg)
549 { 551 {
550 int err; 552 int err;
551 553
552 if (!q || blk_get_queue(q)) 554 if (!q || blk_get_queue(q))
553 return -ENXIO; 555 return -ENXIO;
554 556
555 switch (cmd) { 557 switch (cmd) {
556 /* 558 /*
557 * new sgv3 interface 559 * new sgv3 interface
558 */ 560 */
559 case SG_GET_VERSION_NUM: 561 case SG_GET_VERSION_NUM:
560 err = sg_get_version(arg); 562 err = sg_get_version(arg);
561 break; 563 break;
562 case SCSI_IOCTL_GET_IDLUN: 564 case SCSI_IOCTL_GET_IDLUN:
563 err = scsi_get_idlun(q, arg); 565 err = scsi_get_idlun(q, arg);
564 break; 566 break;
565 case SCSI_IOCTL_GET_BUS_NUMBER: 567 case SCSI_IOCTL_GET_BUS_NUMBER:
566 err = scsi_get_bus(q, arg); 568 err = scsi_get_bus(q, arg);
567 break; 569 break;
568 case SG_SET_TIMEOUT: 570 case SG_SET_TIMEOUT:
569 err = sg_set_timeout(q, arg); 571 err = sg_set_timeout(q, arg);
570 break; 572 break;
571 case SG_GET_TIMEOUT: 573 case SG_GET_TIMEOUT:
572 err = sg_get_timeout(q); 574 err = sg_get_timeout(q);
573 break; 575 break;
574 case SG_GET_RESERVED_SIZE: 576 case SG_GET_RESERVED_SIZE:
575 err = sg_get_reserved_size(q, arg); 577 err = sg_get_reserved_size(q, arg);
576 break; 578 break;
577 case SG_SET_RESERVED_SIZE: 579 case SG_SET_RESERVED_SIZE:
578 err = sg_set_reserved_size(q, arg); 580 err = sg_set_reserved_size(q, arg);
579 break; 581 break;
580 case SG_EMULATED_HOST: 582 case SG_EMULATED_HOST:
581 err = sg_emulated_host(q, arg); 583 err = sg_emulated_host(q, arg);
582 break; 584 break;
583 case SG_IO: { 585 case SG_IO: {
584 struct sg_io_hdr hdr; 586 struct sg_io_hdr hdr;
585 587
586 err = -EFAULT; 588 err = -EFAULT;
587 if (copy_from_user(&hdr, arg, sizeof(hdr))) 589 if (copy_from_user(&hdr, arg, sizeof(hdr)))
588 break; 590 break;
589 err = sg_io(q, bd_disk, &hdr, mode); 591 err = sg_io(q, bd_disk, &hdr, mode);
590 if (err == -EFAULT) 592 if (err == -EFAULT)
591 break; 593 break;
592 594
593 if (copy_to_user(arg, &hdr, sizeof(hdr))) 595 if (copy_to_user(arg, &hdr, sizeof(hdr)))
594 err = -EFAULT; 596 err = -EFAULT;
595 break; 597 break;
596 } 598 }
597 case CDROM_SEND_PACKET: { 599 case CDROM_SEND_PACKET: {
598 struct cdrom_generic_command cgc; 600 struct cdrom_generic_command cgc;
599 struct sg_io_hdr hdr; 601 struct sg_io_hdr hdr;
600 602
601 err = -EFAULT; 603 err = -EFAULT;
602 if (copy_from_user(&cgc, arg, sizeof(cgc))) 604 if (copy_from_user(&cgc, arg, sizeof(cgc)))
603 break; 605 break;
604 cgc.timeout = clock_t_to_jiffies(cgc.timeout); 606 cgc.timeout = clock_t_to_jiffies(cgc.timeout);
605 memset(&hdr, 0, sizeof(hdr)); 607 memset(&hdr, 0, sizeof(hdr));
606 hdr.interface_id = 'S'; 608 hdr.interface_id = 'S';
607 hdr.cmd_len = sizeof(cgc.cmd); 609 hdr.cmd_len = sizeof(cgc.cmd);
608 hdr.dxfer_len = cgc.buflen; 610 hdr.dxfer_len = cgc.buflen;
609 err = 0; 611 err = 0;
610 switch (cgc.data_direction) { 612 switch (cgc.data_direction) {
611 case CGC_DATA_UNKNOWN: 613 case CGC_DATA_UNKNOWN:
612 hdr.dxfer_direction = SG_DXFER_UNKNOWN; 614 hdr.dxfer_direction = SG_DXFER_UNKNOWN;
613 break; 615 break;
614 case CGC_DATA_WRITE: 616 case CGC_DATA_WRITE:
615 hdr.dxfer_direction = SG_DXFER_TO_DEV; 617 hdr.dxfer_direction = SG_DXFER_TO_DEV;
616 break; 618 break;
617 case CGC_DATA_READ: 619 case CGC_DATA_READ:
618 hdr.dxfer_direction = SG_DXFER_FROM_DEV; 620 hdr.dxfer_direction = SG_DXFER_FROM_DEV;
619 break; 621 break;
620 case CGC_DATA_NONE: 622 case CGC_DATA_NONE:
621 hdr.dxfer_direction = SG_DXFER_NONE; 623 hdr.dxfer_direction = SG_DXFER_NONE;
622 break; 624 break;
623 default: 625 default:
624 err = -EINVAL; 626 err = -EINVAL;
625 } 627 }
626 if (err) 628 if (err)
627 break; 629 break;
628 630
629 hdr.dxferp = cgc.buffer; 631 hdr.dxferp = cgc.buffer;
630 hdr.sbp = cgc.sense; 632 hdr.sbp = cgc.sense;
631 if (hdr.sbp) 633 if (hdr.sbp)
632 hdr.mx_sb_len = sizeof(struct request_sense); 634 hdr.mx_sb_len = sizeof(struct request_sense);
633 hdr.timeout = jiffies_to_msecs(cgc.timeout); 635 hdr.timeout = jiffies_to_msecs(cgc.timeout);
634 hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd; 636 hdr.cmdp = ((struct cdrom_generic_command __user*) arg)->cmd;
635 hdr.cmd_len = sizeof(cgc.cmd); 637 hdr.cmd_len = sizeof(cgc.cmd);
636 638
637 err = sg_io(q, bd_disk, &hdr, mode); 639 err = sg_io(q, bd_disk, &hdr, mode);
638 if (err == -EFAULT) 640 if (err == -EFAULT)
639 break; 641 break;
640 642
641 if (hdr.status) 643 if (hdr.status)
642 err = -EIO; 644 err = -EIO;
643 645
644 cgc.stat = err; 646 cgc.stat = err;
645 cgc.buflen = hdr.resid; 647 cgc.buflen = hdr.resid;
646 if (copy_to_user(arg, &cgc, sizeof(cgc))) 648 if (copy_to_user(arg, &cgc, sizeof(cgc)))
647 err = -EFAULT; 649 err = -EFAULT;
648 650
649 break; 651 break;
650 } 652 }
651 653
652 /* 654 /*
653 * old junk scsi send command ioctl 655 * old junk scsi send command ioctl
654 */ 656 */
655 case SCSI_IOCTL_SEND_COMMAND: 657 case SCSI_IOCTL_SEND_COMMAND:
656 printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm); 658 printk(KERN_WARNING "program %s is using a deprecated SCSI ioctl, please convert it to SG_IO\n", current->comm);
657 err = -EINVAL; 659 err = -EINVAL;
658 if (!arg) 660 if (!arg)
659 break; 661 break;
660 662
661 err = sg_scsi_ioctl(q, bd_disk, mode, arg); 663 err = sg_scsi_ioctl(q, bd_disk, mode, arg);
662 break; 664 break;
663 case CDROMCLOSETRAY: 665 case CDROMCLOSETRAY:
664 err = blk_send_start_stop(q, bd_disk, 0x03); 666 err = blk_send_start_stop(q, bd_disk, 0x03);
665 break; 667 break;
666 case CDROMEJECT: 668 case CDROMEJECT:
667 err = blk_send_start_stop(q, bd_disk, 0x02); 669 err = blk_send_start_stop(q, bd_disk, 0x02);
668 break; 670 break;
669 default: 671 default:
670 err = -ENOTTY; 672 err = -ENOTTY;
671 } 673 }
672 674
673 blk_put_queue(q); 675 blk_put_queue(q);
674 return err; 676 return err;
675 } 677 }
676 EXPORT_SYMBOL(scsi_cmd_ioctl); 678 EXPORT_SYMBOL(scsi_cmd_ioctl);
677 679
678 int __init blk_scsi_ioctl_init(void) 680 static int __init blk_scsi_ioctl_init(void)
679 { 681 {
680 blk_set_cmd_filter_defaults(&blk_default_cmd_filter); 682 blk_set_cmd_filter_defaults(&blk_default_cmd_filter);
681 return 0; 683 return 0;
682 } 684 }
683 fs_initcall(blk_scsi_ioctl_init); 685 fs_initcall(blk_scsi_ioctl_init);
684 686