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Viewing changes to source4/ntvfs/posix/pvfs_qfileinfo.c

  • Committer: Chuck Short
  • Date: 2010-09-28 20:38:39 UTC
  • Revision ID: zulcss@ubuntu.com-20100928203839-pgjulytsi9ue63x1
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source4/ntvfs/posix/pvfs_qfileinfo.c
 
1
/* 
 
2
   Unix SMB/CIFS implementation.
 
3
 
 
4
   POSIX NTVFS backend - read
 
5
 
 
6
   Copyright (C) Andrew Tridgell 2004
 
7
 
 
8
   This program is free software; you can redistribute it and/or modify
 
9
   it under the terms of the GNU General Public License as published by
 
10
   the Free Software Foundation; either version 3 of the License, or
 
11
   (at your option) any later version.
 
12
   
 
13
   This program is distributed in the hope that it will be useful,
 
14
   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
15
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
16
   GNU General Public License for more details.
 
17
   
 
18
   You should have received a copy of the GNU General Public License
 
19
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
20
*/
 
21
 
 
22
#include "includes.h"
 
23
#include "vfs_posix.h"
 
24
#include "librpc/gen_ndr/xattr.h"
 
25
 
 
26
 
 
27
/*
 
28
  determine what access bits are needed for a call
 
29
*/
 
30
static uint32_t pvfs_fileinfo_access(union smb_fileinfo *info)
 
31
{
 
32
        uint32_t needed;
 
33
 
 
34
        switch (info->generic.level) {
 
35
        case RAW_FILEINFO_EA_LIST:
 
36
        case RAW_FILEINFO_ALL_EAS:
 
37
                needed = SEC_FILE_READ_EA;
 
38
                break;
 
39
 
 
40
        case RAW_FILEINFO_IS_NAME_VALID:
 
41
                needed = 0;
 
42
                break;
 
43
 
 
44
        case RAW_FILEINFO_ACCESS_INFORMATION:
 
45
                needed = 0;
 
46
                break;
 
47
 
 
48
        case RAW_FILEINFO_SEC_DESC:
 
49
                needed = 0;
 
50
                if (info->query_secdesc.in.secinfo_flags & (SECINFO_OWNER|SECINFO_GROUP)) {
 
51
                        needed |= SEC_STD_READ_CONTROL;
 
52
                }
 
53
                if (info->query_secdesc.in.secinfo_flags & SECINFO_DACL) {
 
54
                        needed |= SEC_STD_READ_CONTROL;
 
55
                }
 
56
                if (info->query_secdesc.in.secinfo_flags & SECINFO_SACL) {
 
57
                        needed |= SEC_FLAG_SYSTEM_SECURITY;
 
58
                }
 
59
                break;
 
60
 
 
61
        default:
 
62
                needed = SEC_FILE_READ_ATTRIBUTE;
 
63
                break;
 
64
        }
 
65
 
 
66
        return needed;
 
67
}
 
68
 
 
69
/*
 
70
  reply to a RAW_FILEINFO_EA_LIST call
 
71
*/
 
72
NTSTATUS pvfs_query_ea_list(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
 
73
                            struct pvfs_filename *name, int fd, 
 
74
                            uint_t num_names,
 
75
                            struct ea_name *names,
 
76
                            struct smb_ea_list *eas)
 
77
{
 
78
        NTSTATUS status;
 
79
        int i;
 
80
        struct xattr_DosEAs *ealist = talloc(mem_ctx, struct xattr_DosEAs);
 
81
 
 
82
        ZERO_STRUCTP(eas);
 
83
        status = pvfs_doseas_load(pvfs, name, fd, ealist);
 
84
        if (!NT_STATUS_IS_OK(status)) {
 
85
                return status;
 
86
        }
 
87
        eas->eas = talloc_array(mem_ctx, struct ea_struct, num_names);
 
88
        if (eas->eas == NULL) {
 
89
                return NT_STATUS_NO_MEMORY;
 
90
        }
 
91
        eas->num_eas = num_names;
 
92
        for (i=0;i<num_names;i++) {
 
93
                int j;
 
94
                eas->eas[i].flags = 0;
 
95
                eas->eas[i].name.s = names[i].name.s;
 
96
                eas->eas[i].value = data_blob(NULL, 0);
 
97
                for (j=0;j<ealist->num_eas;j++) {
 
98
                        if (strcasecmp_m(eas->eas[i].name.s, 
 
99
                                       ealist->eas[j].name) == 0) {
 
100
                                eas->eas[i].value = ealist->eas[j].value;
 
101
                                break;
 
102
                        }
 
103
                }
 
104
        }
 
105
        return NT_STATUS_OK;
 
106
}
 
107
 
 
108
/*
 
109
  reply to a RAW_FILEINFO_ALL_EAS call
 
110
*/
 
111
static NTSTATUS pvfs_query_all_eas(struct pvfs_state *pvfs, TALLOC_CTX *mem_ctx, 
 
112
                                   struct pvfs_filename *name, int fd, 
 
113
                                   struct smb_ea_list *eas)
 
114
{
 
115
        NTSTATUS status;
 
116
        int i;
 
117
        struct xattr_DosEAs *ealist = talloc(mem_ctx, struct xattr_DosEAs);
 
118
 
 
119
        ZERO_STRUCTP(eas);
 
120
        status = pvfs_doseas_load(pvfs, name, fd, ealist);
 
121
        if (!NT_STATUS_IS_OK(status)) {
 
122
                return status;
 
123
        }
 
124
        eas->eas = talloc_array(mem_ctx, struct ea_struct, ealist->num_eas);
 
125
        if (eas->eas == NULL) {
 
126
                return NT_STATUS_NO_MEMORY;
 
127
        }
 
128
        eas->num_eas = 0;
 
129
        for (i=0;i<ealist->num_eas;i++) {
 
130
                eas->eas[eas->num_eas].flags = 0;
 
131
                eas->eas[eas->num_eas].name.s = ealist->eas[i].name;
 
132
                eas->eas[eas->num_eas].value = ealist->eas[i].value;
 
133
                eas->num_eas++;
 
134
        }
 
135
        return NT_STATUS_OK;
 
136
}
 
137
 
 
138
/*
 
139
  approximately map a struct pvfs_filename to a generic fileinfo struct
 
140
*/
 
141
static NTSTATUS pvfs_map_fileinfo(struct pvfs_state *pvfs, 
 
142
                                  struct ntvfs_request *req,
 
143
                                  struct pvfs_filename *name, union smb_fileinfo *info, 
 
144
                                  int fd)
 
145
{
 
146
        switch (info->generic.level) {
 
147
        case RAW_FILEINFO_GENERIC:
 
148
                return NT_STATUS_INVALID_LEVEL;
 
149
 
 
150
        case RAW_FILEINFO_GETATTR:
 
151
                info->getattr.out.attrib     = name->dos.attrib;
 
152
                info->getattr.out.size       = name->st.st_size;
 
153
                info->getattr.out.write_time = nt_time_to_unix(name->dos.write_time);
 
154
                return NT_STATUS_OK;
 
155
 
 
156
        case RAW_FILEINFO_GETATTRE:
 
157
        case RAW_FILEINFO_STANDARD:
 
158
                info->standard.out.create_time = nt_time_to_unix(name->dos.create_time);
 
159
                info->standard.out.access_time = nt_time_to_unix(name->dos.access_time);
 
160
                info->standard.out.write_time  = nt_time_to_unix(name->dos.write_time);
 
161
                info->standard.out.size        = name->st.st_size;
 
162
                info->standard.out.alloc_size  = name->dos.alloc_size;
 
163
                info->standard.out.attrib      = name->dos.attrib;
 
164
                return NT_STATUS_OK;
 
165
 
 
166
        case RAW_FILEINFO_EA_SIZE:
 
167
                info->ea_size.out.create_time = nt_time_to_unix(name->dos.create_time);
 
168
                info->ea_size.out.access_time = nt_time_to_unix(name->dos.access_time);
 
169
                info->ea_size.out.write_time  = nt_time_to_unix(name->dos.write_time);
 
170
                info->ea_size.out.size        = name->st.st_size;
 
171
                info->ea_size.out.alloc_size  = name->dos.alloc_size;
 
172
                info->ea_size.out.attrib      = name->dos.attrib;
 
173
                info->ea_size.out.ea_size     = name->dos.ea_size;
 
174
                return NT_STATUS_OK;
 
175
 
 
176
        case RAW_FILEINFO_EA_LIST:
 
177
                return pvfs_query_ea_list(pvfs, req, name, fd, 
 
178
                                          info->ea_list.in.num_names,
 
179
                                          info->ea_list.in.ea_names, 
 
180
                                          &info->ea_list.out);
 
181
 
 
182
        case RAW_FILEINFO_ALL_EAS:
 
183
                return pvfs_query_all_eas(pvfs, req, name, fd, &info->all_eas.out);
 
184
 
 
185
        case RAW_FILEINFO_SMB2_ALL_EAS: {
 
186
                NTSTATUS status = pvfs_query_all_eas(pvfs, req, name, fd, &info->all_eas.out);
 
187
                if (NT_STATUS_IS_OK(status) &&
 
188
                    info->all_eas.out.num_eas == 0) {
 
189
                        return NT_STATUS_NO_EAS_ON_FILE;
 
190
                }
 
191
                return status;
 
192
        }
 
193
 
 
194
        case RAW_FILEINFO_IS_NAME_VALID:
 
195
                return NT_STATUS_OK;
 
196
 
 
197
        case RAW_FILEINFO_BASIC_INFO:
 
198
        case RAW_FILEINFO_BASIC_INFORMATION:
 
199
                info->basic_info.out.create_time = name->dos.create_time;
 
200
                info->basic_info.out.access_time = name->dos.access_time;
 
201
                info->basic_info.out.write_time  = name->dos.write_time;
 
202
                info->basic_info.out.change_time = name->dos.change_time;
 
203
                info->basic_info.out.attrib      = name->dos.attrib;
 
204
                return NT_STATUS_OK;
 
205
 
 
206
        case RAW_FILEINFO_STANDARD_INFO:
 
207
        case RAW_FILEINFO_STANDARD_INFORMATION:
 
208
                info->standard_info.out.alloc_size     = name->dos.alloc_size;
 
209
                info->standard_info.out.size           = name->st.st_size;
 
210
                info->standard_info.out.nlink          = name->dos.nlink;
 
211
                info->standard_info.out.delete_pending = 0; /* only for qfileinfo */
 
212
                info->standard_info.out.directory   = 
 
213
                        (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
 
214
                return NT_STATUS_OK;
 
215
 
 
216
        case RAW_FILEINFO_EA_INFO:
 
217
        case RAW_FILEINFO_EA_INFORMATION:
 
218
                info->ea_info.out.ea_size = name->dos.ea_size;
 
219
                return NT_STATUS_OK;
 
220
 
 
221
        case RAW_FILEINFO_NAME_INFO:
 
222
        case RAW_FILEINFO_NAME_INFORMATION:
 
223
                if (req->ctx->protocol == PROTOCOL_SMB2) {
 
224
                        /* strange that SMB2 doesn't have this */
 
225
                        return NT_STATUS_NOT_SUPPORTED;
 
226
                }
 
227
                info->name_info.out.fname.s = name->original_name;
 
228
                return NT_STATUS_OK;
 
229
 
 
230
        case RAW_FILEINFO_ALL_INFO:
 
231
        case RAW_FILEINFO_ALL_INFORMATION:
 
232
                info->all_info.out.create_time    = name->dos.create_time;
 
233
                info->all_info.out.access_time    = name->dos.access_time;
 
234
                info->all_info.out.write_time     = name->dos.write_time;
 
235
                info->all_info.out.change_time    = name->dos.change_time;
 
236
                info->all_info.out.attrib         = name->dos.attrib;
 
237
                info->all_info.out.alloc_size     = name->dos.alloc_size;
 
238
                info->all_info.out.size           = name->st.st_size;
 
239
                info->all_info.out.nlink          = name->dos.nlink;
 
240
                info->all_info.out.delete_pending = 0; /* only set by qfileinfo */
 
241
                info->all_info.out.directory      = 
 
242
                        (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
 
243
                info->all_info.out.ea_size        = name->dos.ea_size;
 
244
                info->all_info.out.fname.s        = name->original_name;
 
245
                return NT_STATUS_OK;
 
246
 
 
247
        case RAW_FILEINFO_ALT_NAME_INFO:
 
248
        case RAW_FILEINFO_ALT_NAME_INFORMATION:
 
249
                info->name_info.out.fname.s = pvfs_short_name(pvfs, name, name);
 
250
                return NT_STATUS_OK;
 
251
 
 
252
        case RAW_FILEINFO_STREAM_INFO:
 
253
        case RAW_FILEINFO_STREAM_INFORMATION:
 
254
                return pvfs_stream_information(pvfs, req, name, fd, &info->stream_info.out);
 
255
 
 
256
        case RAW_FILEINFO_COMPRESSION_INFO:
 
257
        case RAW_FILEINFO_COMPRESSION_INFORMATION:
 
258
                info->compression_info.out.compressed_size = name->st.st_size;
 
259
                info->compression_info.out.format          = 0;
 
260
                info->compression_info.out.unit_shift      = 0;
 
261
                info->compression_info.out.chunk_shift     = 0;
 
262
                info->compression_info.out.cluster_shift   = 0;
 
263
                return NT_STATUS_OK;
 
264
 
 
265
        case RAW_FILEINFO_INTERNAL_INFORMATION:
 
266
                info->internal_information.out.file_id = name->dos.file_id;
 
267
                return NT_STATUS_OK;
 
268
 
 
269
        case RAW_FILEINFO_ACCESS_INFORMATION:
 
270
                info->access_information.out.access_flags = 0; /* only set by qfileinfo */
 
271
                return NT_STATUS_OK;
 
272
 
 
273
        case RAW_FILEINFO_POSITION_INFORMATION:
 
274
                info->position_information.out.position = 0; /* only set by qfileinfo */
 
275
                return NT_STATUS_OK;
 
276
 
 
277
        case RAW_FILEINFO_MODE_INFORMATION:
 
278
                info->mode_information.out.mode = 0; /* only set by qfileinfo */
 
279
                return NT_STATUS_OK;
 
280
 
 
281
        case RAW_FILEINFO_ALIGNMENT_INFORMATION:
 
282
                info->alignment_information.out.alignment_requirement = 0;
 
283
                return NT_STATUS_OK;
 
284
 
 
285
        case RAW_FILEINFO_NETWORK_OPEN_INFORMATION:
 
286
                info->network_open_information.out.create_time = name->dos.create_time;
 
287
                info->network_open_information.out.access_time = name->dos.access_time;
 
288
                info->network_open_information.out.write_time  = name->dos.write_time;
 
289
                info->network_open_information.out.change_time = name->dos.change_time;
 
290
                info->network_open_information.out.alloc_size  = name->dos.alloc_size;
 
291
                info->network_open_information.out.size        = name->st.st_size;
 
292
                info->network_open_information.out.attrib      = name->dos.attrib;
 
293
                return NT_STATUS_OK;
 
294
 
 
295
        case RAW_FILEINFO_ATTRIBUTE_TAG_INFORMATION:
 
296
                info->attribute_tag_information.out.attrib      = name->dos.attrib;
 
297
                info->attribute_tag_information.out.reparse_tag = 0;
 
298
                return NT_STATUS_OK;
 
299
 
 
300
        case RAW_FILEINFO_SEC_DESC:
 
301
                return pvfs_acl_query(pvfs, req, name, fd, info);
 
302
 
 
303
        case RAW_FILEINFO_SMB2_ALL_INFORMATION:
 
304
                info->all_info2.out.create_time    = name->dos.create_time;
 
305
                info->all_info2.out.access_time    = name->dos.access_time;
 
306
                info->all_info2.out.write_time     = name->dos.write_time;
 
307
                info->all_info2.out.change_time    = name->dos.change_time;
 
308
                info->all_info2.out.attrib         = name->dos.attrib;
 
309
                info->all_info2.out.unknown1       = 0;
 
310
                info->all_info2.out.alloc_size     = name->dos.alloc_size;
 
311
                info->all_info2.out.size           = name->st.st_size;
 
312
                info->all_info2.out.nlink          = name->dos.nlink;
 
313
                info->all_info2.out.delete_pending = 0; /* only set by qfileinfo */
 
314
                info->all_info2.out.directory      = 
 
315
                        (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY)? 1 : 0;
 
316
                info->all_info2.out.file_id        = name->dos.file_id;
 
317
                info->all_info2.out.ea_size        = name->dos.ea_size;
 
318
                info->all_info2.out.access_mask    = 0; /* only set by qfileinfo */
 
319
                info->all_info2.out.position       = 0; /* only set by qfileinfo */
 
320
                info->all_info2.out.mode           = 0; /* only set by qfileinfo */
 
321
                /* windows wants the full path on disk for this
 
322
                   result, but I really don't want to expose that on
 
323
                   the wire, so I'll give the path with a share
 
324
                   prefix, which is a good approximation */
 
325
                info->all_info2.out.fname.s = talloc_asprintf(req, "\\%s\\%s",
 
326
                                                              pvfs->share_name, 
 
327
                                                              name->original_name);
 
328
                NT_STATUS_HAVE_NO_MEMORY(info->all_info2.out.fname.s);
 
329
                return NT_STATUS_OK;
 
330
        }
 
331
 
 
332
        return NT_STATUS_INVALID_LEVEL;
 
333
}
 
334
 
 
335
/*
 
336
  return info on a pathname
 
337
*/
 
338
NTSTATUS pvfs_qpathinfo(struct ntvfs_module_context *ntvfs,
 
339
                        struct ntvfs_request *req, union smb_fileinfo *info)
 
340
{
 
341
        struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 
342
                                  struct pvfs_state);
 
343
        struct pvfs_filename *name;
 
344
        NTSTATUS status;
 
345
 
 
346
        /* resolve the cifs name to a posix name */
 
347
        status = pvfs_resolve_name(pvfs, req, info->generic.in.file.path, PVFS_RESOLVE_STREAMS, &name);
 
348
        if (!NT_STATUS_IS_OK(status)) {
 
349
                return status;
 
350
        }
 
351
 
 
352
        if (!name->stream_exists) {
 
353
                return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 
354
        }
 
355
 
 
356
        status = pvfs_can_stat(pvfs, req, name);
 
357
        if (!NT_STATUS_IS_OK(status)) {
 
358
                return status;
 
359
        }
 
360
 
 
361
        status = pvfs_access_check_simple(pvfs, req, name, 
 
362
                                          pvfs_fileinfo_access(info));
 
363
        if (!NT_STATUS_IS_OK(status)) {
 
364
                return status;
 
365
        }
 
366
 
 
367
        status = pvfs_map_fileinfo(pvfs, req, name, info, -1);
 
368
 
 
369
        return status;
 
370
}
 
371
 
 
372
/*
 
373
  query info on a open file
 
374
*/
 
375
NTSTATUS pvfs_qfileinfo(struct ntvfs_module_context *ntvfs,
 
376
                        struct ntvfs_request *req, union smb_fileinfo *info)
 
377
{
 
378
        struct pvfs_state *pvfs = talloc_get_type(ntvfs->private_data,
 
379
                                  struct pvfs_state);
 
380
        struct pvfs_file *f;
 
381
        struct pvfs_file_handle *h;
 
382
        NTSTATUS status;
 
383
        uint32_t access_needed;
 
384
 
 
385
        f = pvfs_find_fd(pvfs, req, info->generic.in.file.ntvfs);
 
386
        if (!f) {
 
387
                return NT_STATUS_INVALID_HANDLE;
 
388
        }
 
389
        h = f->handle;
 
390
 
 
391
        access_needed = pvfs_fileinfo_access(info);
 
392
        if ((f->access_mask & access_needed) != access_needed) {
 
393
                return NT_STATUS_ACCESS_DENIED;
 
394
        }
 
395
 
 
396
        /* update the file information */
 
397
        status = pvfs_resolve_name_handle(pvfs, h);
 
398
        if (!NT_STATUS_IS_OK(status)) {
 
399
                return status;
 
400
        }
 
401
        
 
402
        status = pvfs_map_fileinfo(pvfs, req, h->name, info, h->fd);
 
403
 
 
404
        /* a qfileinfo can fill in a bit more info than a qpathinfo -
 
405
           now modify the levels that need to be fixed up */
 
406
        switch (info->generic.level) {
 
407
        case RAW_FILEINFO_STANDARD_INFO:
 
408
        case RAW_FILEINFO_STANDARD_INFORMATION:
 
409
                if (pvfs_delete_on_close_set(pvfs, h)) {
 
410
                        info->standard_info.out.delete_pending = 1;
 
411
                        info->standard_info.out.nlink--;
 
412
                }
 
413
                break;
 
414
 
 
415
        case RAW_FILEINFO_ALL_INFO:
 
416
        case RAW_FILEINFO_ALL_INFORMATION:
 
417
                if (pvfs_delete_on_close_set(pvfs, h)) {
 
418
                        info->all_info.out.delete_pending = 1;
 
419
                        info->all_info.out.nlink--;
 
420
                }
 
421
                break;
 
422
 
 
423
        case RAW_FILEINFO_POSITION_INFORMATION:
 
424
                info->position_information.out.position = h->position;
 
425
                break;
 
426
 
 
427
        case RAW_FILEINFO_ACCESS_INFORMATION:
 
428
                info->access_information.out.access_flags = f->access_mask;
 
429
                break;
 
430
 
 
431
        case RAW_FILEINFO_MODE_INFORMATION:
 
432
                info->mode_information.out.mode = h->mode;
 
433
                break;
 
434
 
 
435
        case RAW_FILEINFO_SMB2_ALL_INFORMATION:
 
436
                if (pvfs_delete_on_close_set(pvfs, h)) {
 
437
                        info->all_info2.out.delete_pending = 1;
 
438
                        info->all_info2.out.nlink--;
 
439
                }
 
440
                info->all_info2.out.position    = h->position;
 
441
                info->all_info2.out.access_mask = f->access_mask;
 
442
                info->all_info2.out.mode        = h->mode;
 
443
                break;
 
444
 
 
445
        default:
 
446
                break;
 
447
        }
 
448
        
 
449
        return status;
 
450
}