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[SCSI] Fix leak of Scsi_Cmnds
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / scsi / scsi_devinfo.c
CommitLineData
1da177e4
LT		 1
2#include <linux/blkdev.h>
3#include <linux/init.h>
4#include <linux/kernel.h>
5#include <linux/module.h>
6#include <linux/moduleparam.h>
7#include <linux/proc_fs.h>
8#include <linux/seq_file.h>
9
10#include <scsi/scsi_device.h>
11#include <scsi/scsi_devinfo.h>
12
13#include "scsi_priv.h"
14
15
16/*
17 * scsi_dev_info_list: structure to hold black/white listed devices.
18 */
19struct scsi_dev_info_list {
20 struct list_head dev_info_list;
21 char vendor[8];
22 char model[16];
23 unsigned flags;
24 unsigned compatible; /* for use with scsi_static_device_list entries */
25};
26
27
28static const char spaces[] = " "; /* 16 of them */
29static unsigned scsi_default_dev_flags;
30static LIST_HEAD(scsi_dev_info_list);
31static char scsi_dev_flags[256];
32
33/*
34 * scsi_static_device_list: deprecated list of devices that require
35 * settings that differ from the default, includes black-listed (broken)
36 * devices. The entries here are added to the tail of scsi_dev_info_list
37 * via scsi_dev_info_list_init.
38 *
39 * Do not add to this list, use the command line or proc interface to add
40 * to the scsi_dev_info_list. This table will eventually go away.
41 */
42static struct {
43 char *vendor;
44 char *model;
45 char *revision; /* revision known to be bad, unused */
46 unsigned flags;
47} scsi_static_device_list[] __initdata = {
48 /*
49 * The following devices are known not to tolerate a lun != 0 scan
50 * for one reason or another. Some will respond to all luns,
51 * others will lock up.
52 */
53 {"Aashima", "IMAGERY 2400SP", "1.03", BLIST_NOLUN}, /* locks up */
54 {"CHINON", "CD-ROM CDS-431", "H42", BLIST_NOLUN}, /* locks up */
55 {"CHINON", "CD-ROM CDS-535", "Q14", BLIST_NOLUN}, /* locks up */
56 {"DENON", "DRD-25X", "V", BLIST_NOLUN}, /* locks up */
57 {"HITACHI", "DK312C", "CM81", BLIST_NOLUN}, /* responds to all lun */
58 {"HITACHI", "DK314C", "CR21", BLIST_NOLUN}, /* responds to all lun */
59 {"IMS", "CDD521/10", "2.06", BLIST_NOLUN}, /* locks up */
60 {"MAXTOR", "XT-3280", "PR02", BLIST_NOLUN}, /* locks up */
61 {"MAXTOR", "XT-4380S", "B3C", BLIST_NOLUN}, /* locks up */
62 {"MAXTOR", "MXT-1240S", "I1.2", BLIST_NOLUN}, /* locks up */
63 {"MAXTOR", "XT-4170S", "B5A", BLIST_NOLUN}, /* locks up */
64 {"MAXTOR", "XT-8760S", "B7B", BLIST_NOLUN}, /* locks up */
65 {"MEDIAVIS", "RENO CD-ROMX2A", "2.03", BLIST_NOLUN}, /* responds to all lun */
66 {"MICROTEK", "ScanMakerIII", "2.30", BLIST_NOLUN}, /* responds to all lun */
67 {"NEC", "CD-ROM DRIVE:841", "1.0", BLIST_NOLUN},/* locks up */
68 {"PHILIPS", "PCA80SC", "V4-2", BLIST_NOLUN}, /* responds to all lun */
69 {"RODIME", "RO3000S", "2.33", BLIST_NOLUN}, /* locks up */
70 {"SUN", "SENA", NULL, BLIST_NOLUN}, /* responds to all luns */
71 /*
72 * The following causes a failed REQUEST SENSE on lun 1 for
73 * aha152x controller, which causes SCSI code to reset bus.
74 */
75 {"SANYO", "CRD-250S", "1.20", BLIST_NOLUN},
76 /*
77 * The following causes a failed REQUEST SENSE on lun 1 for
78 * aha152x controller, which causes SCSI code to reset bus.
79 */
80 {"SEAGATE", "ST157N", "\004|j", BLIST_NOLUN},
81 {"SEAGATE", "ST296", "921", BLIST_NOLUN}, /* responds to all lun */
82 {"SEAGATE", "ST1581", "6538", BLIST_NOLUN}, /* responds to all lun */
83 {"SONY", "CD-ROM CDU-541", "4.3d", BLIST_NOLUN},
84 {"SONY", "CD-ROM CDU-55S", "1.0i", BLIST_NOLUN},
85 {"SONY", "CD-ROM CDU-561", "1.7x", BLIST_NOLUN},
86 {"SONY", "CD-ROM CDU-8012", NULL, BLIST_NOLUN},
87 {"SONY", "SDT-5000", "3.17", BLIST_SELECT_NO_ATN},
88 {"TANDBERG", "TDC 3600", "U07", BLIST_NOLUN}, /* locks up */
89 {"TEAC", "CD-R55S", "1.0H", BLIST_NOLUN}, /* locks up */
90 /*
91 * The following causes a failed REQUEST SENSE on lun 1 for
92 * seagate controller, which causes SCSI code to reset bus.
93 */
94 {"TEAC", "CD-ROM", "1.06", BLIST_NOLUN},
95 {"TEAC", "MT-2ST/45S2-27", "RV M", BLIST_NOLUN}, /* responds to all lun */
96 /*
97 * The following causes a failed REQUEST SENSE on lun 1 for
98 * seagate controller, which causes SCSI code to reset bus.
99 */
100 {"HP", "C1750A", "3226", BLIST_NOLUN}, /* scanjet iic */
101 {"HP", "C1790A", "", BLIST_NOLUN}, /* scanjet iip */
102 {"HP", "C2500A", "", BLIST_NOLUN}, /* scanjet iicx */
103 {"MEDIAVIS", "CDR-H93MV", "1.31", BLIST_NOLUN}, /* locks up */
104 {"MICROTEK", "ScanMaker II", "5.61", BLIST_NOLUN}, /* responds to all lun */
105 {"MITSUMI", "CD-R CR-2201CS", "6119", BLIST_NOLUN}, /* locks up */
106 {"NEC", "D3856", "0009", BLIST_NOLUN},
107 {"QUANTUM", "LPS525S", "3110", BLIST_NOLUN}, /* locks up */
108 {"QUANTUM", "PD1225S", "3110", BLIST_NOLUN}, /* locks up */
109 {"QUANTUM", "FIREBALL ST4.3S", "0F0C", BLIST_NOLUN}, /* locks up */
110 {"RELISYS", "Scorpio", NULL, BLIST_NOLUN}, /* responds to all lun */
111 {"SANKYO", "CP525", "6.64", BLIST_NOLUN}, /* causes failed REQ SENSE, extra reset */
112 {"TEXEL", "CD-ROM", "1.06", BLIST_NOLUN},
1c536315 113 {"transtec", "T5008", "0001", BLIST_NOREPORTLUN },
1da177e4
LT		 114 {"YAMAHA", "CDR100", "1.00", BLIST_NOLUN}, /* locks up */
115 {"YAMAHA", "CDR102", "1.00", BLIST_NOLUN}, /* locks up */
116 {"YAMAHA", "CRW8424S", "1.0", BLIST_NOLUN}, /* locks up */
117 {"YAMAHA", "CRW6416S", "1.0c", BLIST_NOLUN}, /* locks up */
0d7323c8 118 {"", "Scanner", "1.80", BLIST_NOLUN}, /* responds to all lun */
1da177e4
LT		 119
120 /*
121 * Other types of devices that have special flags.
122 * Note that all USB devices should have the BLIST_INQUIRY_36 flag.
123 */
124 {"3PARdata", "VV", NULL, BLIST_REPORTLUN2},
125 {"ADAPTEC", "AACRAID", NULL, BLIST_FORCELUN},
126 {"ADAPTEC", "Adaptec 5400S", NULL, BLIST_FORCELUN},
127 {"AFT PRO", "-IX CF", "0.0>", BLIST_FORCELUN},
128 {"BELKIN", "USB 2 HS-CF", "1.95", BLIST_FORCELUN | BLIST_INQUIRY_36},
129 {"CANON", "IPUBJD", NULL, BLIST_SPARSELUN},
130 {"CBOX3", "USB Storage-SMC", "300A", BLIST_FORCELUN | BLIST_INQUIRY_36},
131 {"CMD", "CRA-7280", NULL, BLIST_SPARSELUN}, /* CMD RAID Controller */
132 {"CNSI", "G7324", NULL, BLIST_SPARSELUN}, /* Chaparral G7324 RAID */
133 {"CNSi", "G8324", NULL, BLIST_SPARSELUN}, /* Chaparral G8324 RAID */
134 {"COMPAQ", "LOGICAL VOLUME", NULL, BLIST_FORCELUN},
135 {"COMPAQ", "CR3500", NULL, BLIST_FORCELUN},
136 {"COMPAQ", "MSA1000", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
137 {"COMPAQ", "MSA1000 VOLUME", NULL, BLIST_SPARSELUN | BLIST_NOSTARTONADD},
138 {"COMPAQ", "HSV110", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
139 {"DDN", "SAN DataDirector", "*", BLIST_SPARSELUN},
507caac7 140 {"DEC", "HSG80", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
1da177e4
LT		 141 {"DELL", "PV660F", NULL, BLIST_SPARSELUN},
142 {"DELL", "PV660F PSEUDO", NULL, BLIST_SPARSELUN},
143 {"DELL", "PSEUDO DEVICE .", NULL, BLIST_SPARSELUN}, /* Dell PV 530F */
144 {"DELL", "PV530F", NULL, BLIST_SPARSELUN},
145 {"DELL", "PERCRAID", NULL, BLIST_FORCELUN},
146 {"DGC", "RAID", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, storage on LUN 0 */
147 {"DGC", "DISK", NULL, BLIST_SPARSELUN}, /* Dell PV 650F, no storage on LUN 0 */
148 {"EMC", "SYMMETRIX", NULL, BLIST_SPARSELUN | BLIST_LARGELUN | BLIST_FORCELUN},
149 {"EMULEX", "MD21/S2 ESDI", NULL, BLIST_SINGLELUN},
150 {"FSC", "CentricStor", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
151 {"Generic", "USB SD Reader", "1.00", BLIST_FORCELUN | BLIST_INQUIRY_36},
152 {"Generic", "USB Storage-SMC", "0180", BLIST_FORCELUN | BLIST_INQUIRY_36},
153 {"Generic", "USB Storage-SMC", "0207", BLIST_FORCELUN | BLIST_INQUIRY_36},
154 {"HITACHI", "DF400", "*", BLIST_SPARSELUN},
155 {"HITACHI", "DF500", "*", BLIST_SPARSELUN},
156 {"HITACHI", "DF600", "*", BLIST_SPARSELUN},
157 {"HP", "A6189A", NULL, BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP VA7400 */
158 {"HP", "OPEN-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, /* HP XP Arrays */
159 {"HP", "NetRAID-4M", NULL, BLIST_FORCELUN},
160 {"HP", "HSV100", NULL, BLIST_REPORTLUN2 | BLIST_NOSTARTONADD},
161 {"HP", "C1557A", NULL, BLIST_FORCELUN},
162 {"HP", "C3323-300", "4269", BLIST_NOTQ},
163 {"IBM", "AuSaV1S2", NULL, BLIST_FORCELUN},
164 {"IBM", "ProFibre 4000R", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
165 {"IBM", "2105", NULL, BLIST_RETRY_HWERROR},
166 {"iomega", "jaz 1GB", "J.86", BLIST_NOTQ | BLIST_NOLUN},
167 {"IOMEGA", "Io20S *F", NULL, BLIST_KEY},
168 {"INSITE", "Floptical F*8I", NULL, BLIST_KEY},
169 {"INSITE", "I325VM", NULL, BLIST_KEY},
170 {"iRiver", "iFP Mass Driver", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
171 {"LASOUND", "CDX7405", "3.10", BLIST_MAX5LUN | BLIST_SINGLELUN},
172 {"MATSHITA", "PD-1", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
173 {"MATSHITA", "DMC-LC5", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
174 {"MATSHITA", "DMC-LC40", NULL, BLIST_NOT_LOCKABLE | BLIST_INQUIRY_36},
175 {"Medion", "Flash XL MMC/SD", "2.6D", BLIST_FORCELUN},
176 {"MegaRAID", "LD", NULL, BLIST_FORCELUN},
177 {"MICROP", "4110", NULL, BLIST_NOTQ},
178 {"MYLEX", "DACARMRB", "*", BLIST_REPORTLUN2},
179 {"nCipher", "Fastness Crypto", NULL, BLIST_FORCELUN},
180 {"NAKAMICH", "MJ-4.8S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
181 {"NAKAMICH", "MJ-5.16S", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
182 {"NEC", "PD-1 ODX654P", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
183 {"NRC", "MBR-7", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
184 {"NRC", "MBR-7.4", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
185 {"PIONEER", "CD-ROM DRM-600", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
186 {"PIONEER", "CD-ROM DRM-602X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
187 {"PIONEER", "CD-ROM DRM-604X", NULL, BLIST_FORCELUN | BLIST_SINGLELUN},
188 {"REGAL", "CDC-4X", NULL, BLIST_MAX5LUN | BLIST_SINGLELUN},
189 {"SanDisk", "ImageMate CF-SD1", NULL, BLIST_FORCELUN},
190 {"SEAGATE", "ST34555N", "0930", BLIST_NOTQ}, /* Chokes on tagged INQUIRY */
191 {"SEAGATE", "ST3390N", "9546", BLIST_NOTQ},
192 {"SGI", "RAID3", "*", BLIST_SPARSELUN},
193 {"SGI", "RAID5", "*", BLIST_SPARSELUN},
194 {"SGI", "TP9100", "*", BLIST_REPORTLUN2},
195 {"SGI", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
48690405 196 {"IBM", "Universal Xport", "*", BLIST_NO_ULD_ATTACH},
1da177e4
LT		 197 {"SMSC", "USB 2 HS-CF", NULL, BLIST_SPARSELUN | BLIST_INQUIRY_36},
198 {"SONY", "CD-ROM CDU-8001", NULL, BLIST_BORKEN},
199 {"SONY", "TSL", NULL, BLIST_FORCELUN}, /* DDS3 & DDS4 autoloaders */
200 {"ST650211", "CF", NULL, BLIST_RETRY_HWERROR},
201 {"SUN", "T300", "*", BLIST_SPARSELUN},
202 {"SUN", "T4", "*", BLIST_SPARSELUN},
203 {"TEXEL", "CD-ROM", "1.06", BLIST_BORKEN},
204 {"TOSHIBA", "CDROM", NULL, BLIST_ISROM},
205 {"TOSHIBA", "CD-ROM", NULL, BLIST_ISROM},
206 {"USB2.0", "SMARTMEDIA/XD", NULL, BLIST_FORCELUN | BLIST_INQUIRY_36},
207 {"WangDAT", "Model 2600", "01.7", BLIST_SELECT_NO_ATN},
208 {"WangDAT", "Model 3200", "02.2", BLIST_SELECT_NO_ATN},
209 {"WangDAT", "Model 1300", "02.4", BLIST_SELECT_NO_ATN},
210 {"WDC WD25", "00JB-00FUA0", NULL, BLIST_NOREPORTLUN},
211 {"XYRATEX", "RS", "*", BLIST_SPARSELUN | BLIST_LARGELUN},
212 {"Zzyzx", "RocketStor 500S", NULL, BLIST_SPARSELUN},
213 {"Zzyzx", "RocketStor 2000", NULL, BLIST_SPARSELUN},
214 { NULL, NULL, NULL, 0 },
215};
216
217/*
218 * scsi_strcpy_devinfo: called from scsi_dev_info_list_add to copy into
219 * devinfo vendor and model strings.
220 */
221static void scsi_strcpy_devinfo(char *name, char *to, size_t to_length,
222 char *from, int compatible)
223{
224 size_t from_length;
225
226 from_length = strlen(from);
227 strncpy(to, from, min(to_length, from_length));
228 if (from_length < to_length) {
229 if (compatible) {
230 /*
231 * NUL terminate the string if it is short.
232 */
233 to[from_length] = '\0';
234 } else {
235 /*
236 * space pad the string if it is short.
237 */
238 strncpy(&to[from_length], spaces,
239 to_length - from_length);
240 }
241 }
242 if (from_length > to_length)
243 printk(KERN_WARNING "%s: %s string '%s' is too long\n",
244 __FUNCTION__, name, from);
245}
246
247/**
248 * scsi_dev_info_list_add: add one dev_info list entry.
249 * @vendor: vendor string
250 * @model: model (product) string
251 * @strflags: integer string
252 * @flag: if strflags NULL, use this flag value
253 *
254 * Description:
255 * Create and add one dev_info entry for @vendor, @model, @strflags or
256 * @flag. If @compatible, add to the tail of the list, do not space
257 * pad, and set devinfo->compatible. The scsi_static_device_list entries
258 * are added with @compatible 1 and @clfags NULL.
259 *
260 * Returns: 0 OK, -error on failure.
261 **/
262static int scsi_dev_info_list_add(int compatible, char *vendor, char *model,
263 char *strflags, int flags)
264{
265 struct scsi_dev_info_list *devinfo;
266
267 devinfo = kmalloc(sizeof(*devinfo), GFP_KERNEL);
268 if (!devinfo) {
269 printk(KERN_ERR "%s: no memory\n", __FUNCTION__);
270 return -ENOMEM;
271 }
272
273 scsi_strcpy_devinfo("vendor", devinfo->vendor, sizeof(devinfo->vendor),
274 vendor, compatible);
275 scsi_strcpy_devinfo("model", devinfo->model, sizeof(devinfo->model),
276 model, compatible);
277
278 if (strflags)
279 devinfo->flags = simple_strtoul(strflags, NULL, 0);
280 else
281 devinfo->flags = flags;
282
283 devinfo->compatible = compatible;
284
285 if (compatible)
286 list_add_tail(&devinfo->dev_info_list, &scsi_dev_info_list);
287 else
288 list_add(&devinfo->dev_info_list, &scsi_dev_info_list);
289
290 return 0;
291}
292
293/**
294 * scsi_dev_info_list_add_str: parse dev_list and add to the
295 * scsi_dev_info_list.
296 * @dev_list: string of device flags to add
297 *
298 * Description:
299 * Parse dev_list, and add entries to the scsi_dev_info_list.
300 * dev_list is of the form "vendor:product:flag,vendor:product:flag".
301 * dev_list is modified via strsep. Can be called for command line
302 * addition, for proc or mabye a sysfs interface.
303 *
304 * Returns: 0 if OK, -error on failure.
305 **/
306static int scsi_dev_info_list_add_str(char *dev_list)
307{
308 char *vendor, *model, *strflags, *next;
309 char *next_check;
310 int res = 0;
311
312 next = dev_list;
313 if (next && next[0] == '"') {
314 /*
315 * Ignore both the leading and trailing quote.
316 */
317 next++;
318 next_check = ",\"";
319 } else {
320 next_check = ",";
321 }
322
323 /*
324 * For the leading and trailing '"' case, the for loop comes
325 * through the last time with vendor[0] == '\0'.
326 */
327 for (vendor = strsep(&next, ":"); vendor && (vendor[0] != '\0')
328 && (res == 0); vendor = strsep(&next, ":")) {
329 strflags = NULL;
330 model = strsep(&next, ":");
331 if (model)
332 strflags = strsep(&next, next_check);
333 if (!model || !strflags) {
334 printk(KERN_ERR "%s: bad dev info string '%s' '%s'"
335 " '%s'\n", __FUNCTION__, vendor, model,
336 strflags);
337 res = -EINVAL;
338 } else
339 res = scsi_dev_info_list_add(0 /* compatible */, vendor,
340 model, strflags, 0);
341 }
342 return res;
343}
344
345/**
346 * get_device_flags - get device specific flags from the dynamic device
347 * list. Called during scan time.
348 * @vendor: vendor name
349 * @model: model name
350 *
351 * Description:
352 * Search the scsi_dev_info_list for an entry matching @vendor and
353 * @model, if found, return the matching flags value, else return
354 * the host or global default settings.
355 **/
356int scsi_get_device_flags(struct scsi_device *sdev, unsigned char *vendor,
357 unsigned char *model)
358{
359 struct scsi_dev_info_list *devinfo;
360 unsigned int bflags;
361
362 bflags = sdev->sdev_bflags;
363 if (!bflags)
364 bflags = scsi_default_dev_flags;
365
366 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
367 if (devinfo->compatible) {
368 /*
369 * Behave like the older version of get_device_flags.
370 */
371 size_t max;
372 /*
373 * XXX why skip leading spaces? If an odd INQUIRY
374 * value, that should have been part of the
375 * scsi_static_device_list[] entry, such as " FOO"
376 * rather than "FOO". Since this code is already
377 * here, and we don't know what device it is
378 * trying to work with, leave it as-is.
379 */
380 max = 8; /* max length of vendor */
381 while ((max > 0) && *vendor == ' ') {
382 max--;
383 vendor++;
384 }
385 /*
386 * XXX removing the following strlen() would be
387 * good, using it means that for a an entry not in
388 * the list, we scan every byte of every vendor
389 * listed in scsi_static_device_list[], and never match
390 * a single one (and still have to compare at
391 * least the first byte of each vendor).
392 */
393 if (memcmp(devinfo->vendor, vendor,
394 min(max, strlen(devinfo->vendor))))
395 continue;
396 /*
397 * Skip spaces again.
398 */
399 max = 16; /* max length of model */
400 while ((max > 0) && *model == ' ') {
401 max--;
402 model++;
403 }
404 if (memcmp(devinfo->model, model,
405 min(max, strlen(devinfo->model))))
406 continue;
407 return devinfo->flags;
408 } else {
409 if (!memcmp(devinfo->vendor, vendor,
410 sizeof(devinfo->vendor)) &&
411 !memcmp(devinfo->model, model,
412 sizeof(devinfo->model)))
413 return devinfo->flags;
414 }
415 }
416 return bflags;
417}
418
419#ifdef CONFIG_SCSI_PROC_FS
420/*
421 * proc_scsi_dev_info_read: dump the scsi_dev_info_list via
422 * /proc/scsi/device_info
423 */
424static int proc_scsi_devinfo_read(char *buffer, char **start,
425 off_t offset, int length)
426{
427 struct scsi_dev_info_list *devinfo;
428 int size, len = 0;
429 off_t begin = 0;
430 off_t pos = 0;
431
432 list_for_each_entry(devinfo, &scsi_dev_info_list, dev_info_list) {
433 size = sprintf(buffer + len, "'%.8s' '%.16s' 0x%x\n",
434 devinfo->vendor, devinfo->model, devinfo->flags);
435 len += size;
436 pos = begin + len;
437 if (pos < offset) {
438 len = 0;
439 begin = pos;
440 }
441 if (pos > offset + length)
442 goto stop_output;
443 }
444
445stop_output:
446 *start = buffer + (offset - begin); /* Start of wanted data */
447 len -= (offset - begin); /* Start slop */
448 if (len > length)
449 len = length; /* Ending slop */
450 return (len);
451}
452
453/*
454 * proc_scsi_dev_info_write: allow additions to the scsi_dev_info_list via
455 * /proc.
456 *
457 * Use: echo "vendor:model:flag" > /proc/scsi/device_info
458 *
459 * To add a black/white list entry for vendor and model with an integer
460 * value of flag to the scsi device info list.
461 */
462static int proc_scsi_devinfo_write(struct file *file, const char __user *buf,
463 unsigned long length, void *data)
464{
465 char *buffer;
466 int err = length;
467
468 if (!buf || length>PAGE_SIZE)
469 return -EINVAL;
470 if (!(buffer = (char *) __get_free_page(GFP_KERNEL)))
471 return -ENOMEM;
472 if (copy_from_user(buffer, buf, length)) {
473 err =-EFAULT;
474 goto out;
475 }
476
477 if (length < PAGE_SIZE)
478 buffer[length] = '\0';
479 else if (buffer[PAGE_SIZE-1]) {
480 err = -EINVAL;
481 goto out;
482 }
483
484 scsi_dev_info_list_add_str(buffer);
485
486out:
487 free_page((unsigned long)buffer);
488 return err;
489}
490#endif /* CONFIG_SCSI_PROC_FS */
491
492module_param_string(dev_flags, scsi_dev_flags, sizeof(scsi_dev_flags), 0);
493MODULE_PARM_DESC(dev_flags,
494 "Given scsi_dev_flags=vendor:model:flags[,v:m:f] add black/white"
495 " list entries for vendor and model with an integer value of flags"
496 " to the scsi device info list");
497
498module_param_named(default_dev_flags, scsi_default_dev_flags, int, S_IRUGO|S_IWUSR);
499MODULE_PARM_DESC(default_dev_flags,
500 "scsi default device flag integer value");
501
502/**
503 * scsi_dev_info_list_delete: called from scsi.c:exit_scsi to remove
504 * the scsi_dev_info_list.
505 **/
506void scsi_exit_devinfo(void)
507{
508 struct list_head *lh, *lh_next;
509 struct scsi_dev_info_list *devinfo;
510
511#ifdef CONFIG_SCSI_PROC_FS
512 remove_proc_entry("scsi/device_info", NULL);
513#endif
514
515 list_for_each_safe(lh, lh_next, &scsi_dev_info_list) {
516 devinfo = list_entry(lh, struct scsi_dev_info_list,
517 dev_info_list);
518 kfree(devinfo);
519 }
520}
521
522/**
523 * scsi_dev_list_init: set up the dynamic device list.
524 * @dev_list: string of device flags to add
525 *
526 * Description:
527 * Add command line @dev_list entries, then add
528 * scsi_static_device_list entries to the scsi device info list.
529 **/
530int __init scsi_init_devinfo(void)
531{
532#ifdef CONFIG_SCSI_PROC_FS
533 struct proc_dir_entry *p;
534#endif
535 int error, i;
536
537 error = scsi_dev_info_list_add_str(scsi_dev_flags);
538 if (error)
539 return error;
540
541 for (i = 0; scsi_static_device_list[i].vendor; i++) {
542 error = scsi_dev_info_list_add(1 /* compatibile */,
543 scsi_static_device_list[i].vendor,
544 scsi_static_device_list[i].model,
545 NULL,
546 scsi_static_device_list[i].flags);
547 if (error)
548 goto out;
549 }
550
551#ifdef CONFIG_SCSI_PROC_FS
552 p = create_proc_entry("scsi/device_info", 0, NULL);
553 if (!p) {
554 error = -ENOMEM;
555 goto out;
556 }
557
558 p->owner = THIS_MODULE;
559 p->get_info = proc_scsi_devinfo_read;
560 p->write_proc = proc_scsi_devinfo_write;
561#endif /* CONFIG_SCSI_PROC_FS */
562
563 out:
564 if (error)
565 scsi_exit_devinfo();
566 return error;
567}
kernel source for telekom puls (alcatel/mediatek)