Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * ioctl.c | |
3 | * | |
4 | * Copyright (C) 1995, 1996 by Volker Lendecke | |
5 | * Modified 1997 Peter Waltenberg, Bill Hawes, David Woodhouse for 2.1 dcache | |
6 | * Modified 1998, 1999 Wolfram Pienkoss for NLS | |
7 | * | |
8 | */ | |
9 | ||
16f7e0fe | 10 | #include <linux/capability.h> |
54f67f63 | 11 | #include <linux/compat.h> |
1da177e4 LT |
12 | #include <linux/errno.h> |
13 | #include <linux/fs.h> | |
14 | #include <linux/ioctl.h> | |
15 | #include <linux/time.h> | |
16 | #include <linux/mm.h> | |
17 | #include <linux/highuid.h> | |
54f67f63 | 18 | #include <linux/smp_lock.h> |
1da177e4 | 19 | #include <linux/vmalloc.h> |
e8edc6e0 | 20 | #include <linux/sched.h> |
1da177e4 LT |
21 | |
22 | #include <linux/ncp_fs.h> | |
23 | ||
54f67f63 PV |
24 | #include <asm/uaccess.h> |
25 | ||
1da177e4 LT |
26 | #include "ncplib_kernel.h" |
27 | ||
28 | /* maximum limit for ncp_objectname_ioctl */ | |
29 | #define NCP_OBJECT_NAME_MAX_LEN 4096 | |
30 | /* maximum limit for ncp_privatedata_ioctl */ | |
31 | #define NCP_PRIVATE_DATA_MAX_LEN 8192 | |
32 | /* maximum negotiable packet size */ | |
33 | #define NCP_PACKET_SIZE_INTERNAL 65536 | |
34 | ||
35 | static int | |
8c744fb8 CH |
36 | ncp_get_fs_info(struct ncp_server * server, struct file *file, |
37 | struct ncp_fs_info __user *arg) | |
1da177e4 | 38 | { |
92e5baef | 39 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
40 | struct ncp_fs_info info; |
41 | ||
8c744fb8 | 42 | if ((file_permission(file, MAY_WRITE) != 0) |
1da177e4 LT |
43 | && (current->uid != server->m.mounted_uid)) { |
44 | return -EACCES; | |
45 | } | |
46 | if (copy_from_user(&info, arg, sizeof(info))) | |
47 | return -EFAULT; | |
48 | ||
49 | if (info.version != NCP_GET_FS_INFO_VERSION) { | |
50 | DPRINTK("info.version invalid: %d\n", info.version); | |
51 | return -EINVAL; | |
52 | } | |
53 | /* TODO: info.addr = server->m.serv_addr; */ | |
54 | SET_UID(info.mounted_uid, server->m.mounted_uid); | |
55 | info.connection = server->connection; | |
56 | info.buffer_size = server->buffer_size; | |
57 | info.volume_number = NCP_FINFO(inode)->volNumber; | |
58 | info.directory_id = NCP_FINFO(inode)->DosDirNum; | |
59 | ||
60 | if (copy_to_user(arg, &info, sizeof(info))) | |
61 | return -EFAULT; | |
62 | return 0; | |
63 | } | |
64 | ||
65 | static int | |
8c744fb8 CH |
66 | ncp_get_fs_info_v2(struct ncp_server * server, struct file *file, |
67 | struct ncp_fs_info_v2 __user * arg) | |
1da177e4 | 68 | { |
92e5baef | 69 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
70 | struct ncp_fs_info_v2 info2; |
71 | ||
8c744fb8 | 72 | if ((file_permission(file, MAY_WRITE) != 0) |
1da177e4 LT |
73 | && (current->uid != server->m.mounted_uid)) { |
74 | return -EACCES; | |
75 | } | |
76 | if (copy_from_user(&info2, arg, sizeof(info2))) | |
77 | return -EFAULT; | |
78 | ||
79 | if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { | |
80 | DPRINTK("info.version invalid: %d\n", info2.version); | |
81 | return -EINVAL; | |
82 | } | |
83 | info2.mounted_uid = server->m.mounted_uid; | |
84 | info2.connection = server->connection; | |
85 | info2.buffer_size = server->buffer_size; | |
86 | info2.volume_number = NCP_FINFO(inode)->volNumber; | |
87 | info2.directory_id = NCP_FINFO(inode)->DosDirNum; | |
88 | info2.dummy1 = info2.dummy2 = info2.dummy3 = 0; | |
89 | ||
90 | if (copy_to_user(arg, &info2, sizeof(info2))) | |
91 | return -EFAULT; | |
92 | return 0; | |
93 | } | |
94 | ||
54f67f63 PV |
95 | #ifdef CONFIG_COMPAT |
96 | struct compat_ncp_objectname_ioctl | |
97 | { | |
98 | s32 auth_type; | |
99 | u32 object_name_len; | |
100 | compat_caddr_t object_name; /* an userspace data, in most cases user name */ | |
101 | }; | |
102 | ||
103 | struct compat_ncp_fs_info_v2 { | |
104 | s32 version; | |
105 | u32 mounted_uid; | |
106 | u32 connection; | |
107 | u32 buffer_size; | |
108 | ||
109 | u32 volume_number; | |
110 | u32 directory_id; | |
111 | ||
112 | u32 dummy1; | |
113 | u32 dummy2; | |
114 | u32 dummy3; | |
115 | }; | |
116 | ||
117 | struct compat_ncp_ioctl_request { | |
118 | u32 function; | |
119 | u32 size; | |
120 | compat_caddr_t data; | |
121 | }; | |
122 | ||
123 | struct compat_ncp_privatedata_ioctl | |
124 | { | |
125 | u32 len; | |
126 | compat_caddr_t data; /* ~1000 for NDS */ | |
127 | }; | |
128 | ||
129 | #define NCP_IOC_GET_FS_INFO_V2_32 _IOWR('n', 4, struct compat_ncp_fs_info_v2) | |
130 | #define NCP_IOC_NCPREQUEST_32 _IOR('n', 1, struct compat_ncp_ioctl_request) | |
131 | #define NCP_IOC_GETOBJECTNAME_32 _IOWR('n', 9, struct compat_ncp_objectname_ioctl) | |
132 | #define NCP_IOC_SETOBJECTNAME_32 _IOR('n', 9, struct compat_ncp_objectname_ioctl) | |
133 | #define NCP_IOC_GETPRIVATEDATA_32 _IOWR('n', 10, struct compat_ncp_privatedata_ioctl) | |
134 | #define NCP_IOC_SETPRIVATEDATA_32 _IOR('n', 10, struct compat_ncp_privatedata_ioctl) | |
135 | ||
136 | static int | |
137 | ncp_get_compat_fs_info_v2(struct ncp_server * server, struct file *file, | |
138 | struct compat_ncp_fs_info_v2 __user * arg) | |
139 | { | |
92e5baef | 140 | struct inode *inode = file->f_path.dentry->d_inode; |
54f67f63 PV |
141 | struct compat_ncp_fs_info_v2 info2; |
142 | ||
143 | if ((file_permission(file, MAY_WRITE) != 0) | |
144 | && (current->uid != server->m.mounted_uid)) { | |
145 | return -EACCES; | |
146 | } | |
147 | if (copy_from_user(&info2, arg, sizeof(info2))) | |
148 | return -EFAULT; | |
149 | ||
150 | if (info2.version != NCP_GET_FS_INFO_VERSION_V2) { | |
151 | DPRINTK("info.version invalid: %d\n", info2.version); | |
152 | return -EINVAL; | |
153 | } | |
154 | info2.mounted_uid = server->m.mounted_uid; | |
155 | info2.connection = server->connection; | |
156 | info2.buffer_size = server->buffer_size; | |
157 | info2.volume_number = NCP_FINFO(inode)->volNumber; | |
158 | info2.directory_id = NCP_FINFO(inode)->DosDirNum; | |
159 | info2.dummy1 = info2.dummy2 = info2.dummy3 = 0; | |
160 | ||
161 | if (copy_to_user(arg, &info2, sizeof(info2))) | |
162 | return -EFAULT; | |
163 | return 0; | |
164 | } | |
165 | #endif | |
166 | ||
167 | #define NCP_IOC_GETMOUNTUID16 _IOW('n', 2, u16) | |
168 | #define NCP_IOC_GETMOUNTUID32 _IOW('n', 2, u32) | |
169 | #define NCP_IOC_GETMOUNTUID64 _IOW('n', 2, u64) | |
170 | ||
1da177e4 LT |
171 | #ifdef CONFIG_NCPFS_NLS |
172 | /* Here we are select the iocharset and the codepage for NLS. | |
173 | * Thanks Petr Vandrovec for idea and many hints. | |
174 | */ | |
175 | static int | |
176 | ncp_set_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) | |
177 | { | |
178 | struct ncp_nls_ioctl user; | |
179 | struct nls_table *codepage; | |
180 | struct nls_table *iocharset; | |
181 | struct nls_table *oldset_io; | |
182 | struct nls_table *oldset_cp; | |
183 | ||
184 | if (!capable(CAP_SYS_ADMIN)) | |
185 | return -EACCES; | |
186 | if (server->root_setuped) | |
187 | return -EBUSY; | |
188 | ||
189 | if (copy_from_user(&user, arg, sizeof(user))) | |
190 | return -EFAULT; | |
191 | ||
192 | codepage = NULL; | |
193 | user.codepage[NCP_IOCSNAME_LEN] = 0; | |
194 | if (!user.codepage[0] || !strcmp(user.codepage, "default")) | |
195 | codepage = load_nls_default(); | |
196 | else { | |
197 | codepage = load_nls(user.codepage); | |
198 | if (!codepage) { | |
199 | return -EBADRQC; | |
200 | } | |
201 | } | |
202 | ||
203 | iocharset = NULL; | |
204 | user.iocharset[NCP_IOCSNAME_LEN] = 0; | |
205 | if (!user.iocharset[0] || !strcmp(user.iocharset, "default")) { | |
206 | iocharset = load_nls_default(); | |
207 | NCP_CLR_FLAG(server, NCP_FLAG_UTF8); | |
208 | } else if (!strcmp(user.iocharset, "utf8")) { | |
209 | iocharset = load_nls_default(); | |
210 | NCP_SET_FLAG(server, NCP_FLAG_UTF8); | |
211 | } else { | |
212 | iocharset = load_nls(user.iocharset); | |
213 | if (!iocharset) { | |
214 | unload_nls(codepage); | |
215 | return -EBADRQC; | |
216 | } | |
217 | NCP_CLR_FLAG(server, NCP_FLAG_UTF8); | |
218 | } | |
219 | ||
220 | oldset_cp = server->nls_vol; | |
221 | server->nls_vol = codepage; | |
222 | oldset_io = server->nls_io; | |
223 | server->nls_io = iocharset; | |
224 | ||
225 | if (oldset_cp) | |
226 | unload_nls(oldset_cp); | |
227 | if (oldset_io) | |
228 | unload_nls(oldset_io); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | static int | |
234 | ncp_get_charsets(struct ncp_server* server, struct ncp_nls_ioctl __user *arg) | |
235 | { | |
236 | struct ncp_nls_ioctl user; | |
237 | int len; | |
238 | ||
239 | memset(&user, 0, sizeof(user)); | |
240 | if (server->nls_vol && server->nls_vol->charset) { | |
241 | len = strlen(server->nls_vol->charset); | |
242 | if (len > NCP_IOCSNAME_LEN) | |
243 | len = NCP_IOCSNAME_LEN; | |
244 | strncpy(user.codepage, server->nls_vol->charset, len); | |
245 | user.codepage[len] = 0; | |
246 | } | |
247 | ||
248 | if (NCP_IS_FLAG(server, NCP_FLAG_UTF8)) | |
249 | strcpy(user.iocharset, "utf8"); | |
250 | else if (server->nls_io && server->nls_io->charset) { | |
251 | len = strlen(server->nls_io->charset); | |
252 | if (len > NCP_IOCSNAME_LEN) | |
253 | len = NCP_IOCSNAME_LEN; | |
254 | strncpy(user.iocharset, server->nls_io->charset, len); | |
255 | user.iocharset[len] = 0; | |
256 | } | |
257 | ||
258 | if (copy_to_user(arg, &user, sizeof(user))) | |
259 | return -EFAULT; | |
260 | return 0; | |
261 | } | |
262 | #endif /* CONFIG_NCPFS_NLS */ | |
263 | ||
264 | int ncp_ioctl(struct inode *inode, struct file *filp, | |
265 | unsigned int cmd, unsigned long arg) | |
266 | { | |
267 | struct ncp_server *server = NCP_SERVER(inode); | |
268 | int result; | |
269 | struct ncp_ioctl_request request; | |
270 | char* bouncebuffer; | |
271 | void __user *argp = (void __user *)arg; | |
272 | ||
273 | switch (cmd) { | |
54f67f63 PV |
274 | #ifdef CONFIG_COMPAT |
275 | case NCP_IOC_NCPREQUEST_32: | |
276 | #endif | |
1da177e4 | 277 | case NCP_IOC_NCPREQUEST: |
8c744fb8 | 278 | if ((file_permission(filp, MAY_WRITE) != 0) |
1da177e4 LT |
279 | && (current->uid != server->m.mounted_uid)) { |
280 | return -EACCES; | |
281 | } | |
54f67f63 PV |
282 | #ifdef CONFIG_COMPAT |
283 | if (cmd == NCP_IOC_NCPREQUEST_32) { | |
284 | struct compat_ncp_ioctl_request request32; | |
285 | if (copy_from_user(&request32, argp, sizeof(request32))) | |
286 | return -EFAULT; | |
287 | request.function = request32.function; | |
288 | request.size = request32.size; | |
289 | request.data = compat_ptr(request32.data); | |
290 | } else | |
291 | #endif | |
1da177e4 LT |
292 | if (copy_from_user(&request, argp, sizeof(request))) |
293 | return -EFAULT; | |
294 | ||
295 | if ((request.function > 255) | |
296 | || (request.size > | |
297 | NCP_PACKET_SIZE - sizeof(struct ncp_request_header))) { | |
298 | return -EINVAL; | |
299 | } | |
300 | bouncebuffer = vmalloc(NCP_PACKET_SIZE_INTERNAL); | |
301 | if (!bouncebuffer) | |
302 | return -ENOMEM; | |
303 | if (copy_from_user(bouncebuffer, request.data, request.size)) { | |
304 | vfree(bouncebuffer); | |
305 | return -EFAULT; | |
306 | } | |
307 | ncp_lock_server(server); | |
308 | ||
309 | /* FIXME: We hack around in the server's structures | |
310 | here to be able to use ncp_request */ | |
311 | ||
312 | server->has_subfunction = 0; | |
313 | server->current_size = request.size; | |
314 | memcpy(server->packet, bouncebuffer, request.size); | |
315 | ||
316 | result = ncp_request2(server, request.function, | |
317 | bouncebuffer, NCP_PACKET_SIZE_INTERNAL); | |
318 | if (result < 0) | |
319 | result = -EIO; | |
320 | else | |
321 | result = server->reply_size; | |
322 | ncp_unlock_server(server); | |
323 | DPRINTK("ncp_ioctl: copy %d bytes\n", | |
324 | result); | |
325 | if (result >= 0) | |
326 | if (copy_to_user(request.data, bouncebuffer, result)) | |
327 | result = -EFAULT; | |
328 | vfree(bouncebuffer); | |
329 | return result; | |
330 | ||
331 | case NCP_IOC_CONN_LOGGED_IN: | |
332 | ||
333 | if (!capable(CAP_SYS_ADMIN)) | |
334 | return -EACCES; | |
335 | if (!(server->m.int_flags & NCP_IMOUNT_LOGGEDIN_POSSIBLE)) | |
336 | return -EINVAL; | |
337 | if (server->root_setuped) | |
338 | return -EBUSY; | |
339 | server->root_setuped = 1; | |
340 | return ncp_conn_logged_in(inode->i_sb); | |
341 | ||
342 | case NCP_IOC_GET_FS_INFO: | |
8c744fb8 | 343 | return ncp_get_fs_info(server, filp, argp); |
1da177e4 LT |
344 | |
345 | case NCP_IOC_GET_FS_INFO_V2: | |
8c744fb8 | 346 | return ncp_get_fs_info_v2(server, filp, argp); |
1da177e4 | 347 | |
54f67f63 PV |
348 | #ifdef CONFIG_COMPAT |
349 | case NCP_IOC_GET_FS_INFO_V2_32: | |
350 | return ncp_get_compat_fs_info_v2(server, filp, argp); | |
351 | #endif | |
352 | /* we have too many combinations of CONFIG_COMPAT, | |
353 | * CONFIG_64BIT and CONFIG_UID16, so just handle | |
354 | * any of the possible ioctls */ | |
355 | case NCP_IOC_GETMOUNTUID16: | |
356 | case NCP_IOC_GETMOUNTUID32: | |
357 | case NCP_IOC_GETMOUNTUID64: | |
358 | if ((file_permission(filp, MAY_READ) != 0) | |
359 | && (current->uid != server->m.mounted_uid)) { | |
360 | return -EACCES; | |
361 | } | |
362 | if (cmd == NCP_IOC_GETMOUNTUID16) { | |
363 | u16 uid; | |
364 | SET_UID(uid, server->m.mounted_uid); | |
365 | if (put_user(uid, (u16 __user *)argp)) | |
366 | return -EFAULT; | |
367 | } else if (cmd == NCP_IOC_GETMOUNTUID32) { | |
368 | if (put_user(server->m.mounted_uid, | |
369 | (u32 __user *)argp)) | |
370 | return -EFAULT; | |
371 | } else { | |
372 | if (put_user(server->m.mounted_uid, | |
373 | (u64 __user *)argp)) | |
1da177e4 | 374 | return -EFAULT; |
1da177e4 | 375 | } |
54f67f63 | 376 | return 0; |
1da177e4 LT |
377 | |
378 | case NCP_IOC_GETROOT: | |
379 | { | |
380 | struct ncp_setroot_ioctl sr; | |
381 | ||
8c744fb8 | 382 | if ((file_permission(filp, MAY_READ) != 0) |
1da177e4 LT |
383 | && (current->uid != server->m.mounted_uid)) |
384 | { | |
385 | return -EACCES; | |
386 | } | |
387 | if (server->m.mounted_vol[0]) { | |
388 | struct dentry* dentry = inode->i_sb->s_root; | |
389 | ||
390 | if (dentry) { | |
391 | struct inode* inode = dentry->d_inode; | |
392 | ||
393 | if (inode) { | |
394 | sr.volNumber = NCP_FINFO(inode)->volNumber; | |
395 | sr.dirEntNum = NCP_FINFO(inode)->dirEntNum; | |
396 | sr.namespace = server->name_space[sr.volNumber]; | |
397 | } else | |
398 | DPRINTK("ncpfs: s_root->d_inode==NULL\n"); | |
399 | } else | |
400 | DPRINTK("ncpfs: s_root==NULL\n"); | |
401 | } else { | |
402 | sr.volNumber = -1; | |
403 | sr.namespace = 0; | |
404 | sr.dirEntNum = 0; | |
405 | } | |
406 | if (copy_to_user(argp, &sr, sizeof(sr))) | |
407 | return -EFAULT; | |
408 | return 0; | |
409 | } | |
410 | case NCP_IOC_SETROOT: | |
411 | { | |
412 | struct ncp_setroot_ioctl sr; | |
413 | __u32 vnum; | |
414 | __le32 de; | |
415 | __le32 dosde; | |
416 | struct dentry* dentry; | |
417 | ||
418 | if (!capable(CAP_SYS_ADMIN)) | |
419 | { | |
420 | return -EACCES; | |
421 | } | |
422 | if (server->root_setuped) return -EBUSY; | |
423 | if (copy_from_user(&sr, argp, sizeof(sr))) | |
424 | return -EFAULT; | |
425 | if (sr.volNumber < 0) { | |
426 | server->m.mounted_vol[0] = 0; | |
427 | vnum = NCP_NUMBER_OF_VOLUMES; | |
428 | de = 0; | |
429 | dosde = 0; | |
430 | } else if (sr.volNumber >= NCP_NUMBER_OF_VOLUMES) { | |
431 | return -EINVAL; | |
432 | } else if (ncp_mount_subdir(server, sr.volNumber, | |
433 | sr.namespace, sr.dirEntNum, | |
434 | &vnum, &de, &dosde)) { | |
435 | return -ENOENT; | |
436 | } | |
437 | ||
438 | dentry = inode->i_sb->s_root; | |
439 | server->root_setuped = 1; | |
440 | if (dentry) { | |
441 | struct inode* inode = dentry->d_inode; | |
442 | ||
443 | if (inode) { | |
444 | NCP_FINFO(inode)->volNumber = vnum; | |
445 | NCP_FINFO(inode)->dirEntNum = de; | |
446 | NCP_FINFO(inode)->DosDirNum = dosde; | |
447 | } else | |
448 | DPRINTK("ncpfs: s_root->d_inode==NULL\n"); | |
449 | } else | |
450 | DPRINTK("ncpfs: s_root==NULL\n"); | |
451 | ||
452 | return 0; | |
453 | } | |
454 | ||
455 | #ifdef CONFIG_NCPFS_PACKET_SIGNING | |
456 | case NCP_IOC_SIGN_INIT: | |
8c744fb8 | 457 | if ((file_permission(filp, MAY_WRITE) != 0) |
1da177e4 LT |
458 | && (current->uid != server->m.mounted_uid)) |
459 | { | |
460 | return -EACCES; | |
461 | } | |
462 | if (argp) { | |
463 | if (server->sign_wanted) | |
464 | { | |
465 | struct ncp_sign_init sign; | |
466 | ||
467 | if (copy_from_user(&sign, argp, sizeof(sign))) | |
468 | return -EFAULT; | |
469 | memcpy(server->sign_root,sign.sign_root,8); | |
470 | memcpy(server->sign_last,sign.sign_last,16); | |
471 | server->sign_active = 1; | |
472 | } | |
473 | /* ignore when signatures not wanted */ | |
474 | } else { | |
475 | server->sign_active = 0; | |
476 | } | |
477 | return 0; | |
478 | ||
479 | case NCP_IOC_SIGN_WANTED: | |
8c744fb8 | 480 | if ((file_permission(filp, MAY_READ) != 0) |
1da177e4 LT |
481 | && (current->uid != server->m.mounted_uid)) |
482 | { | |
483 | return -EACCES; | |
484 | } | |
485 | ||
486 | if (put_user(server->sign_wanted, (int __user *)argp)) | |
487 | return -EFAULT; | |
488 | return 0; | |
489 | case NCP_IOC_SET_SIGN_WANTED: | |
490 | { | |
491 | int newstate; | |
492 | ||
8c744fb8 | 493 | if ((file_permission(filp, MAY_WRITE) != 0) |
1da177e4 LT |
494 | && (current->uid != server->m.mounted_uid)) |
495 | { | |
496 | return -EACCES; | |
497 | } | |
498 | /* get only low 8 bits... */ | |
499 | if (get_user(newstate, (unsigned char __user *)argp)) | |
500 | return -EFAULT; | |
501 | if (server->sign_active) { | |
502 | /* cannot turn signatures OFF when active */ | |
503 | if (!newstate) return -EINVAL; | |
504 | } else { | |
505 | server->sign_wanted = newstate != 0; | |
506 | } | |
507 | return 0; | |
508 | } | |
509 | ||
510 | #endif /* CONFIG_NCPFS_PACKET_SIGNING */ | |
511 | ||
512 | #ifdef CONFIG_NCPFS_IOCTL_LOCKING | |
513 | case NCP_IOC_LOCKUNLOCK: | |
8c744fb8 | 514 | if ((file_permission(filp, MAY_WRITE) != 0) |
1da177e4 LT |
515 | && (current->uid != server->m.mounted_uid)) |
516 | { | |
517 | return -EACCES; | |
518 | } | |
519 | { | |
520 | struct ncp_lock_ioctl rqdata; | |
521 | int result; | |
522 | ||
523 | if (copy_from_user(&rqdata, argp, sizeof(rqdata))) | |
524 | return -EFAULT; | |
525 | if (rqdata.origin != 0) | |
526 | return -EINVAL; | |
527 | /* check for cmd */ | |
528 | switch (rqdata.cmd) { | |
529 | case NCP_LOCK_EX: | |
530 | case NCP_LOCK_SH: | |
531 | if (rqdata.timeout == 0) | |
532 | rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT; | |
533 | else if (rqdata.timeout > NCP_LOCK_MAX_TIMEOUT) | |
534 | rqdata.timeout = NCP_LOCK_MAX_TIMEOUT; | |
535 | break; | |
536 | case NCP_LOCK_LOG: | |
537 | rqdata.timeout = NCP_LOCK_DEFAULT_TIMEOUT; /* has no effect */ | |
538 | case NCP_LOCK_CLEAR: | |
539 | break; | |
540 | default: | |
541 | return -EINVAL; | |
542 | } | |
543 | /* locking needs both read and write access */ | |
544 | if ((result = ncp_make_open(inode, O_RDWR)) != 0) | |
545 | { | |
546 | return result; | |
547 | } | |
548 | result = -EIO; | |
549 | if (!ncp_conn_valid(server)) | |
550 | goto outrel; | |
551 | result = -EISDIR; | |
552 | if (!S_ISREG(inode->i_mode)) | |
553 | goto outrel; | |
554 | if (rqdata.cmd == NCP_LOCK_CLEAR) | |
555 | { | |
556 | result = ncp_ClearPhysicalRecord(NCP_SERVER(inode), | |
557 | NCP_FINFO(inode)->file_handle, | |
558 | rqdata.offset, | |
559 | rqdata.length); | |
560 | if (result > 0) result = 0; /* no such lock */ | |
561 | } | |
562 | else | |
563 | { | |
564 | int lockcmd; | |
565 | ||
566 | switch (rqdata.cmd) | |
567 | { | |
568 | case NCP_LOCK_EX: lockcmd=1; break; | |
569 | case NCP_LOCK_SH: lockcmd=3; break; | |
570 | default: lockcmd=0; break; | |
571 | } | |
572 | result = ncp_LogPhysicalRecord(NCP_SERVER(inode), | |
573 | NCP_FINFO(inode)->file_handle, | |
574 | lockcmd, | |
575 | rqdata.offset, | |
576 | rqdata.length, | |
577 | rqdata.timeout); | |
578 | if (result > 0) result = -EAGAIN; | |
579 | } | |
580 | outrel: | |
581 | ncp_inode_close(inode); | |
582 | return result; | |
583 | } | |
584 | #endif /* CONFIG_NCPFS_IOCTL_LOCKING */ | |
585 | ||
54f67f63 PV |
586 | #ifdef CONFIG_COMPAT |
587 | case NCP_IOC_GETOBJECTNAME_32: | |
588 | if (current->uid != server->m.mounted_uid) { | |
589 | return -EACCES; | |
590 | } | |
591 | { | |
592 | struct compat_ncp_objectname_ioctl user; | |
593 | size_t outl; | |
594 | ||
595 | if (copy_from_user(&user, argp, sizeof(user))) | |
596 | return -EFAULT; | |
597 | user.auth_type = server->auth.auth_type; | |
598 | outl = user.object_name_len; | |
599 | user.object_name_len = server->auth.object_name_len; | |
600 | if (outl > user.object_name_len) | |
601 | outl = user.object_name_len; | |
602 | if (outl) { | |
603 | if (copy_to_user(compat_ptr(user.object_name), | |
604 | server->auth.object_name, | |
605 | outl)) return -EFAULT; | |
606 | } | |
607 | if (copy_to_user(argp, &user, sizeof(user))) | |
608 | return -EFAULT; | |
609 | return 0; | |
610 | } | |
611 | #endif | |
1da177e4 LT |
612 | case NCP_IOC_GETOBJECTNAME: |
613 | if (current->uid != server->m.mounted_uid) { | |
614 | return -EACCES; | |
615 | } | |
616 | { | |
617 | struct ncp_objectname_ioctl user; | |
618 | size_t outl; | |
619 | ||
620 | if (copy_from_user(&user, argp, sizeof(user))) | |
621 | return -EFAULT; | |
622 | user.auth_type = server->auth.auth_type; | |
623 | outl = user.object_name_len; | |
624 | user.object_name_len = server->auth.object_name_len; | |
625 | if (outl > user.object_name_len) | |
626 | outl = user.object_name_len; | |
627 | if (outl) { | |
628 | if (copy_to_user(user.object_name, | |
629 | server->auth.object_name, | |
630 | outl)) return -EFAULT; | |
631 | } | |
632 | if (copy_to_user(argp, &user, sizeof(user))) | |
633 | return -EFAULT; | |
634 | return 0; | |
635 | } | |
54f67f63 PV |
636 | #ifdef CONFIG_COMPAT |
637 | case NCP_IOC_SETOBJECTNAME_32: | |
638 | #endif | |
1da177e4 LT |
639 | case NCP_IOC_SETOBJECTNAME: |
640 | if (current->uid != server->m.mounted_uid) { | |
641 | return -EACCES; | |
642 | } | |
643 | { | |
644 | struct ncp_objectname_ioctl user; | |
645 | void* newname; | |
646 | void* oldname; | |
647 | size_t oldnamelen; | |
648 | void* oldprivate; | |
649 | size_t oldprivatelen; | |
650 | ||
54f67f63 PV |
651 | #ifdef CONFIG_COMPAT |
652 | if (cmd == NCP_IOC_SETOBJECTNAME_32) { | |
653 | struct compat_ncp_objectname_ioctl user32; | |
654 | if (copy_from_user(&user32, argp, sizeof(user32))) | |
655 | return -EFAULT; | |
656 | user.auth_type = user32.auth_type; | |
657 | user.object_name_len = user32.object_name_len; | |
658 | user.object_name = compat_ptr(user32.object_name); | |
659 | } else | |
660 | #endif | |
1da177e4 LT |
661 | if (copy_from_user(&user, argp, sizeof(user))) |
662 | return -EFAULT; | |
54f67f63 | 663 | |
1da177e4 LT |
664 | if (user.object_name_len > NCP_OBJECT_NAME_MAX_LEN) |
665 | return -ENOMEM; | |
666 | if (user.object_name_len) { | |
44db77f3 PE |
667 | newname = kmalloc(user.object_name_len, GFP_USER); |
668 | if (!newname) | |
669 | return -ENOMEM; | |
1da177e4 | 670 | if (copy_from_user(newname, user.object_name, user.object_name_len)) { |
44db77f3 | 671 | kfree(newname); |
1da177e4 LT |
672 | return -EFAULT; |
673 | } | |
674 | } else { | |
675 | newname = NULL; | |
676 | } | |
677 | /* enter critical section */ | |
678 | /* maybe that kfree can sleep so do that this way */ | |
679 | /* it is at least more SMP friendly (in future...) */ | |
680 | oldname = server->auth.object_name; | |
681 | oldnamelen = server->auth.object_name_len; | |
682 | oldprivate = server->priv.data; | |
683 | oldprivatelen = server->priv.len; | |
684 | server->auth.auth_type = user.auth_type; | |
685 | server->auth.object_name_len = user.object_name_len; | |
686 | server->auth.object_name = newname; | |
687 | server->priv.len = 0; | |
688 | server->priv.data = NULL; | |
689 | /* leave critical section */ | |
44db77f3 PE |
690 | kfree(oldprivate); |
691 | kfree(oldname); | |
1da177e4 LT |
692 | return 0; |
693 | } | |
54f67f63 PV |
694 | #ifdef CONFIG_COMPAT |
695 | case NCP_IOC_GETPRIVATEDATA_32: | |
696 | #endif | |
1da177e4 LT |
697 | case NCP_IOC_GETPRIVATEDATA: |
698 | if (current->uid != server->m.mounted_uid) { | |
699 | return -EACCES; | |
700 | } | |
701 | { | |
702 | struct ncp_privatedata_ioctl user; | |
703 | size_t outl; | |
704 | ||
54f67f63 PV |
705 | #ifdef CONFIG_COMPAT |
706 | if (cmd == NCP_IOC_GETPRIVATEDATA_32) { | |
707 | struct compat_ncp_privatedata_ioctl user32; | |
708 | if (copy_from_user(&user32, argp, sizeof(user32))) | |
709 | return -EFAULT; | |
710 | user.len = user32.len; | |
711 | user.data = compat_ptr(user32.data); | |
712 | } else | |
713 | #endif | |
1da177e4 LT |
714 | if (copy_from_user(&user, argp, sizeof(user))) |
715 | return -EFAULT; | |
54f67f63 | 716 | |
1da177e4 LT |
717 | outl = user.len; |
718 | user.len = server->priv.len; | |
719 | if (outl > user.len) outl = user.len; | |
720 | if (outl) { | |
721 | if (copy_to_user(user.data, | |
722 | server->priv.data, | |
723 | outl)) return -EFAULT; | |
724 | } | |
54f67f63 PV |
725 | #ifdef CONFIG_COMPAT |
726 | if (cmd == NCP_IOC_GETPRIVATEDATA_32) { | |
727 | struct compat_ncp_privatedata_ioctl user32; | |
728 | user32.len = user.len; | |
729 | user32.data = (unsigned long) user.data; | |
5c09d96b | 730 | if (copy_to_user(argp, &user32, sizeof(user32))) |
54f67f63 PV |
731 | return -EFAULT; |
732 | } else | |
733 | #endif | |
1da177e4 LT |
734 | if (copy_to_user(argp, &user, sizeof(user))) |
735 | return -EFAULT; | |
54f67f63 | 736 | |
1da177e4 LT |
737 | return 0; |
738 | } | |
54f67f63 PV |
739 | #ifdef CONFIG_COMPAT |
740 | case NCP_IOC_SETPRIVATEDATA_32: | |
741 | #endif | |
1da177e4 LT |
742 | case NCP_IOC_SETPRIVATEDATA: |
743 | if (current->uid != server->m.mounted_uid) { | |
744 | return -EACCES; | |
745 | } | |
746 | { | |
747 | struct ncp_privatedata_ioctl user; | |
748 | void* new; | |
749 | void* old; | |
750 | size_t oldlen; | |
751 | ||
54f67f63 PV |
752 | #ifdef CONFIG_COMPAT |
753 | if (cmd == NCP_IOC_SETPRIVATEDATA_32) { | |
754 | struct compat_ncp_privatedata_ioctl user32; | |
755 | if (copy_from_user(&user32, argp, sizeof(user32))) | |
756 | return -EFAULT; | |
757 | user.len = user32.len; | |
758 | user.data = compat_ptr(user32.data); | |
759 | } else | |
760 | #endif | |
1da177e4 LT |
761 | if (copy_from_user(&user, argp, sizeof(user))) |
762 | return -EFAULT; | |
54f67f63 | 763 | |
1da177e4 LT |
764 | if (user.len > NCP_PRIVATE_DATA_MAX_LEN) |
765 | return -ENOMEM; | |
766 | if (user.len) { | |
44db77f3 PE |
767 | new = kmalloc(user.len, GFP_USER); |
768 | if (!new) | |
769 | return -ENOMEM; | |
1da177e4 | 770 | if (copy_from_user(new, user.data, user.len)) { |
44db77f3 | 771 | kfree(new); |
1da177e4 LT |
772 | return -EFAULT; |
773 | } | |
774 | } else { | |
775 | new = NULL; | |
776 | } | |
777 | /* enter critical section */ | |
778 | old = server->priv.data; | |
779 | oldlen = server->priv.len; | |
780 | server->priv.len = user.len; | |
781 | server->priv.data = new; | |
782 | /* leave critical section */ | |
44db77f3 | 783 | kfree(old); |
1da177e4 LT |
784 | return 0; |
785 | } | |
786 | ||
787 | #ifdef CONFIG_NCPFS_NLS | |
788 | case NCP_IOC_SETCHARSETS: | |
789 | return ncp_set_charsets(server, argp); | |
790 | ||
791 | case NCP_IOC_GETCHARSETS: | |
792 | return ncp_get_charsets(server, argp); | |
793 | ||
794 | #endif /* CONFIG_NCPFS_NLS */ | |
795 | ||
796 | case NCP_IOC_SETDENTRYTTL: | |
8c744fb8 | 797 | if ((file_permission(filp, MAY_WRITE) != 0) && |
1da177e4 LT |
798 | (current->uid != server->m.mounted_uid)) |
799 | return -EACCES; | |
800 | { | |
801 | u_int32_t user; | |
802 | ||
803 | if (copy_from_user(&user, argp, sizeof(user))) | |
804 | return -EFAULT; | |
805 | /* 20 secs at most... */ | |
806 | if (user > 20000) | |
807 | return -EINVAL; | |
808 | user = (user * HZ) / 1000; | |
809 | server->dentry_ttl = user; | |
810 | return 0; | |
811 | } | |
812 | ||
813 | case NCP_IOC_GETDENTRYTTL: | |
814 | { | |
815 | u_int32_t user = (server->dentry_ttl * 1000) / HZ; | |
816 | if (copy_to_user(argp, &user, sizeof(user))) | |
817 | return -EFAULT; | |
818 | return 0; | |
819 | } | |
820 | ||
821 | } | |
1da177e4 LT |
822 | return -EINVAL; |
823 | } | |
54f67f63 PV |
824 | |
825 | #ifdef CONFIG_COMPAT | |
826 | long ncp_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
827 | { | |
92e5baef | 828 | struct inode *inode = file->f_path.dentry->d_inode; |
54f67f63 PV |
829 | int ret; |
830 | ||
831 | lock_kernel(); | |
832 | arg = (unsigned long) compat_ptr(arg); | |
833 | ret = ncp_ioctl(inode, file, cmd, arg); | |
834 | unlock_kernel(); | |
835 | return ret; | |
836 | } | |
837 | #endif |