Commit | Line | Data |
---|---|---|
b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
96c57ade | 2 | #include <linux/ceph/ceph_debug.h> |
8f4e91de SW |
3 | #include <linux/in.h> |
4 | ||
8f4e91de | 5 | #include "super.h" |
3d14c5d2 | 6 | #include "mds_client.h" |
3d14c5d2 | 7 | #include "ioctl.h" |
08c1ac50 | 8 | #include <linux/ceph/striper.h> |
f061feda | 9 | #include <linux/fscrypt.h> |
8f4e91de SW |
10 | |
11 | /* | |
12 | * ioctls | |
13 | */ | |
14 | ||
15 | /* | |
16 | * get and set the file layout | |
17 | */ | |
18 | static long ceph_ioctl_get_layout(struct file *file, void __user *arg) | |
19 | { | |
496ad9aa | 20 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
8f4e91de SW |
21 | struct ceph_ioctl_layout l; |
22 | int err; | |
23 | ||
508b32d8 | 24 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); |
8f4e91de | 25 | if (!err) { |
7627151e YZ |
26 | l.stripe_unit = ci->i_layout.stripe_unit; |
27 | l.stripe_count = ci->i_layout.stripe_count; | |
28 | l.object_size = ci->i_layout.object_size; | |
29 | l.data_pool = ci->i_layout.pool_id; | |
24c149ad | 30 | l.preferred_osd = -1; |
8f4e91de SW |
31 | if (copy_to_user(arg, &l, sizeof(l))) |
32 | return -EFAULT; | |
33 | } | |
34 | ||
35 | return err; | |
36 | } | |
37 | ||
e49bf4c5 SW |
38 | static long __validate_layout(struct ceph_mds_client *mdsc, |
39 | struct ceph_ioctl_layout *l) | |
40 | { | |
41 | int i, err; | |
42 | ||
e49bf4c5 SW |
43 | /* validate striping parameters */ |
44 | if ((l->object_size & ~PAGE_MASK) || | |
45 | (l->stripe_unit & ~PAGE_MASK) || | |
0bc62284 | 46 | ((unsigned)l->stripe_unit != 0 && |
45f2e081 | 47 | ((unsigned)l->object_size % (unsigned)l->stripe_unit))) |
e49bf4c5 SW |
48 | return -EINVAL; |
49 | ||
50 | /* make sure it's a valid data pool */ | |
51 | mutex_lock(&mdsc->mutex); | |
52 | err = -EINVAL; | |
53 | for (i = 0; i < mdsc->mdsmap->m_num_data_pg_pools; i++) | |
54 | if (mdsc->mdsmap->m_data_pg_pools[i] == l->data_pool) { | |
55 | err = 0; | |
56 | break; | |
57 | } | |
58 | mutex_unlock(&mdsc->mutex); | |
59 | if (err) | |
60 | return err; | |
61 | ||
62 | return 0; | |
63 | } | |
64 | ||
8f4e91de SW |
65 | static long ceph_ioctl_set_layout(struct file *file, void __user *arg) |
66 | { | |
496ad9aa | 67 | struct inode *inode = file_inode(file); |
5995d90d | 68 | struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(inode->i_sb)->mdsc; |
8f4e91de SW |
69 | struct ceph_mds_request *req; |
70 | struct ceph_ioctl_layout l; | |
496ad9aa | 71 | struct ceph_inode_info *ci = ceph_inode(file_inode(file)); |
a35eca95 | 72 | struct ceph_ioctl_layout nl; |
e49bf4c5 | 73 | int err; |
8f4e91de | 74 | |
8f4e91de SW |
75 | if (copy_from_user(&l, arg, sizeof(l))) |
76 | return -EFAULT; | |
77 | ||
a35eca95 | 78 | /* validate changed params against current layout */ |
508b32d8 | 79 | err = ceph_do_getattr(file_inode(file), CEPH_STAT_CAP_LAYOUT, false); |
702aeb1f | 80 | if (err) |
a35eca95 GF |
81 | return err; |
82 | ||
702aeb1f | 83 | memset(&nl, 0, sizeof(nl)); |
a35eca95 GF |
84 | if (l.stripe_count) |
85 | nl.stripe_count = l.stripe_count; | |
702aeb1f | 86 | else |
7627151e | 87 | nl.stripe_count = ci->i_layout.stripe_count; |
a35eca95 GF |
88 | if (l.stripe_unit) |
89 | nl.stripe_unit = l.stripe_unit; | |
702aeb1f | 90 | else |
7627151e | 91 | nl.stripe_unit = ci->i_layout.stripe_unit; |
a35eca95 GF |
92 | if (l.object_size) |
93 | nl.object_size = l.object_size; | |
702aeb1f | 94 | else |
7627151e | 95 | nl.object_size = ci->i_layout.object_size; |
a35eca95 GF |
96 | if (l.data_pool) |
97 | nl.data_pool = l.data_pool; | |
702aeb1f | 98 | else |
7627151e | 99 | nl.data_pool = ci->i_layout.pool_id; |
702aeb1f SW |
100 | |
101 | /* this is obsolete, and always -1 */ | |
24c149ad | 102 | nl.preferred_osd = -1; |
a35eca95 | 103 | |
e49bf4c5 SW |
104 | err = __validate_layout(mdsc, &nl); |
105 | if (err) | |
106 | return err; | |
8f4e91de SW |
107 | |
108 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETLAYOUT, | |
109 | USE_AUTH_MDS); | |
110 | if (IS_ERR(req)) | |
111 | return PTR_ERR(req); | |
70b666c3 SW |
112 | req->r_inode = inode; |
113 | ihold(inode); | |
3bd58143 YZ |
114 | req->r_num_caps = 1; |
115 | ||
8f4e91de SW |
116 | req->r_inode_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_FILE_EXCL; |
117 | ||
118 | req->r_args.setlayout.layout.fl_stripe_unit = | |
119 | cpu_to_le32(l.stripe_unit); | |
120 | req->r_args.setlayout.layout.fl_stripe_count = | |
121 | cpu_to_le32(l.stripe_count); | |
122 | req->r_args.setlayout.layout.fl_object_size = | |
123 | cpu_to_le32(l.object_size); | |
124 | req->r_args.setlayout.layout.fl_pg_pool = cpu_to_le32(l.data_pool); | |
8f4e91de | 125 | |
752c8bdc | 126 | err = ceph_mdsc_do_request(mdsc, NULL, req); |
8f4e91de SW |
127 | ceph_mdsc_put_request(req); |
128 | return err; | |
129 | } | |
130 | ||
571dba52 GF |
131 | /* |
132 | * Set a layout policy on a directory inode. All items in the tree | |
133 | * rooted at this inode will inherit this layout on creation, | |
134 | * (It doesn't apply retroactively ) | |
135 | * unless a subdirectory has its own layout policy. | |
136 | */ | |
137 | static long ceph_ioctl_set_layout_policy (struct file *file, void __user *arg) | |
138 | { | |
496ad9aa | 139 | struct inode *inode = file_inode(file); |
571dba52 GF |
140 | struct ceph_mds_request *req; |
141 | struct ceph_ioctl_layout l; | |
e49bf4c5 | 142 | int err; |
5995d90d | 143 | struct ceph_mds_client *mdsc = ceph_sb_to_fs_client(inode->i_sb)->mdsc; |
571dba52 GF |
144 | |
145 | /* copy and validate */ | |
146 | if (copy_from_user(&l, arg, sizeof(l))) | |
147 | return -EFAULT; | |
148 | ||
e49bf4c5 SW |
149 | err = __validate_layout(mdsc, &l); |
150 | if (err) | |
151 | return err; | |
571dba52 GF |
152 | |
153 | req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETDIRLAYOUT, | |
154 | USE_AUTH_MDS); | |
155 | ||
156 | if (IS_ERR(req)) | |
157 | return PTR_ERR(req); | |
70b666c3 SW |
158 | req->r_inode = inode; |
159 | ihold(inode); | |
3bd58143 | 160 | req->r_num_caps = 1; |
571dba52 GF |
161 | |
162 | req->r_args.setlayout.layout.fl_stripe_unit = | |
163 | cpu_to_le32(l.stripe_unit); | |
164 | req->r_args.setlayout.layout.fl_stripe_count = | |
165 | cpu_to_le32(l.stripe_count); | |
166 | req->r_args.setlayout.layout.fl_object_size = | |
167 | cpu_to_le32(l.object_size); | |
168 | req->r_args.setlayout.layout.fl_pg_pool = | |
169 | cpu_to_le32(l.data_pool); | |
571dba52 GF |
170 | |
171 | err = ceph_mdsc_do_request(mdsc, inode, req); | |
172 | ceph_mdsc_put_request(req); | |
173 | return err; | |
174 | } | |
175 | ||
8f4e91de SW |
176 | /* |
177 | * Return object name, size/offset information, and location (OSD | |
178 | * number, network address) for a given file offset. | |
179 | */ | |
180 | static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg) | |
181 | { | |
182 | struct ceph_ioctl_dataloc dl; | |
496ad9aa | 183 | struct inode *inode = file_inode(file); |
8f4e91de | 184 | struct ceph_inode_info *ci = ceph_inode(inode); |
3d14c5d2 | 185 | struct ceph_osd_client *osdc = |
5995d90d | 186 | &ceph_sb_to_fs_client(inode->i_sb)->client->osdc; |
7c13cb64 | 187 | struct ceph_object_locator oloc; |
281dbe5d | 188 | CEPH_DEFINE_OID_ONSTACK(oid); |
dccbf080 | 189 | u32 xlen; |
8f4e91de | 190 | u64 tmp; |
51042122 | 191 | struct ceph_pg pgid; |
457712a0 | 192 | int r; |
8f4e91de SW |
193 | |
194 | /* copy and validate */ | |
195 | if (copy_from_user(&dl, arg, sizeof(dl))) | |
196 | return -EFAULT; | |
197 | ||
5aea3dcd | 198 | down_read(&osdc->lock); |
dccbf080 ID |
199 | ceph_calc_file_object_mapping(&ci->i_layout, dl.file_offset, 1, |
200 | &dl.object_no, &dl.object_offset, &xlen); | |
8f4e91de | 201 | dl.file_offset -= dl.object_offset; |
7627151e YZ |
202 | dl.object_size = ci->i_layout.object_size; |
203 | dl.block_size = ci->i_layout.stripe_unit; | |
8f4e91de SW |
204 | |
205 | /* block_offset = object_offset % block_size */ | |
206 | tmp = dl.object_offset; | |
207 | dl.block_offset = do_div(tmp, dl.block_size); | |
208 | ||
209 | snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx", | |
210 | ceph_ino(inode), dl.object_no); | |
41766f87 | 211 | |
7627151e | 212 | oloc.pool = ci->i_layout.pool_id; |
779fe0fb | 213 | oloc.pool_ns = ceph_try_get_string(ci->i_layout.pool_ns); |
d30291b9 | 214 | ceph_oid_printf(&oid, "%s", dl.object_name); |
7c13cb64 | 215 | |
d9591f5e | 216 | r = ceph_object_locator_to_pg(osdc->osdmap, &oid, &oloc, &pgid); |
779fe0fb YZ |
217 | |
218 | ceph_oloc_destroy(&oloc); | |
2fbcbff1 | 219 | if (r < 0) { |
5aea3dcd | 220 | up_read(&osdc->lock); |
2fbcbff1 | 221 | return r; |
222 | } | |
8f4e91de | 223 | |
f81f1633 | 224 | dl.osd = ceph_pg_to_acting_primary(osdc->osdmap, &pgid); |
8f4e91de SW |
225 | if (dl.osd >= 0) { |
226 | struct ceph_entity_addr *a = | |
227 | ceph_osd_addr(osdc->osdmap, dl.osd); | |
228 | if (a) | |
229 | memcpy(&dl.osd_addr, &a->in_addr, sizeof(dl.osd_addr)); | |
230 | } else { | |
231 | memset(&dl.osd_addr, 0, sizeof(dl.osd_addr)); | |
232 | } | |
5aea3dcd | 233 | up_read(&osdc->lock); |
8f4e91de SW |
234 | |
235 | /* send result back to user */ | |
236 | if (copy_to_user(arg, &dl, sizeof(dl))) | |
237 | return -EFAULT; | |
238 | ||
239 | return 0; | |
240 | } | |
241 | ||
8c6e9229 SW |
242 | static long ceph_ioctl_lazyio(struct file *file) |
243 | { | |
244 | struct ceph_file_info *fi = file->private_data; | |
496ad9aa | 245 | struct inode *inode = file_inode(file); |
8c6e9229 | 246 | struct ceph_inode_info *ci = ceph_inode(inode); |
5995d90d | 247 | struct ceph_mds_client *mdsc = ceph_inode_to_fs_client(inode)->mdsc; |
38d46409 | 248 | struct ceph_client *cl = mdsc->fsc->client; |
8c6e9229 SW |
249 | |
250 | if ((fi->fmode & CEPH_FILE_MODE_LAZY) == 0) { | |
be655596 | 251 | spin_lock(&ci->i_ceph_lock); |
8c6e9229 | 252 | fi->fmode |= CEPH_FILE_MODE_LAZY; |
774a6a11 | 253 | ci->i_nr_by_mode[ffs(CEPH_FILE_MODE_LAZY)]++; |
719a2514 | 254 | __ceph_touch_fmode(ci, mdsc, fi->fmode); |
be655596 | 255 | spin_unlock(&ci->i_ceph_lock); |
38d46409 XL |
256 | doutc(cl, "file %p %p %llx.%llx marked lazy\n", file, inode, |
257 | ceph_vinop(inode)); | |
8c6e9229 | 258 | |
e4b731cc | 259 | ceph_check_caps(ci, 0); |
8c6e9229 | 260 | } else { |
38d46409 XL |
261 | doutc(cl, "file %p %p %llx.%llx already lazy\n", file, inode, |
262 | ceph_vinop(inode)); | |
8c6e9229 SW |
263 | } |
264 | return 0; | |
265 | } | |
266 | ||
4918b6d1 SW |
267 | static long ceph_ioctl_syncio(struct file *file) |
268 | { | |
269 | struct ceph_file_info *fi = file->private_data; | |
270 | ||
271 | fi->flags |= CEPH_F_SYNC; | |
272 | return 0; | |
273 | } | |
274 | ||
f061feda JL |
275 | static int vet_mds_for_fscrypt(struct file *file) |
276 | { | |
277 | int i, ret = -EOPNOTSUPP; | |
278 | struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(file_inode(file)->i_sb); | |
279 | ||
280 | mutex_lock(&mdsc->mutex); | |
281 | for (i = 0; i < mdsc->max_sessions; i++) { | |
282 | struct ceph_mds_session *s = mdsc->sessions[i]; | |
283 | ||
284 | if (!s) | |
285 | continue; | |
286 | if (test_bit(CEPHFS_FEATURE_ALTERNATE_NAME, &s->s_features)) | |
287 | ret = 0; | |
288 | break; | |
289 | } | |
290 | mutex_unlock(&mdsc->mutex); | |
291 | return ret; | |
292 | } | |
293 | ||
294 | static long ceph_set_encryption_policy(struct file *file, unsigned long arg) | |
295 | { | |
296 | int ret, got = 0; | |
297 | struct inode *inode = file_inode(file); | |
298 | struct ceph_inode_info *ci = ceph_inode(inode); | |
299 | ||
94af0470 JL |
300 | /* encrypted directories can't have striped layout */ |
301 | if (ci->i_layout.stripe_count > 1) | |
302 | return -EINVAL; | |
303 | ||
f061feda JL |
304 | ret = vet_mds_for_fscrypt(file); |
305 | if (ret) | |
306 | return ret; | |
307 | ||
308 | /* | |
309 | * Ensure we hold these caps so that we _know_ that the rstats check | |
310 | * in the empty_dir check is reliable. | |
311 | */ | |
312 | ret = ceph_get_caps(file, CEPH_CAP_FILE_SHARED, 0, -1, &got); | |
313 | if (ret) | |
314 | return ret; | |
315 | ||
316 | ret = fscrypt_ioctl_set_policy(file, (const void __user *)arg); | |
317 | if (got) | |
318 | ceph_put_cap_refs(ci, got); | |
319 | ||
320 | return ret; | |
321 | } | |
322 | ||
b7b53361 XL |
323 | static const char *ceph_ioctl_cmd_name(const unsigned int cmd) |
324 | { | |
325 | switch (cmd) { | |
326 | case CEPH_IOC_GET_LAYOUT: | |
327 | return "get_layout"; | |
328 | case CEPH_IOC_SET_LAYOUT: | |
329 | return "set_layout"; | |
330 | case CEPH_IOC_SET_LAYOUT_POLICY: | |
331 | return "set_layout_policy"; | |
332 | case CEPH_IOC_GET_DATALOC: | |
333 | return "get_dataloc"; | |
334 | case CEPH_IOC_LAZYIO: | |
335 | return "lazyio"; | |
336 | case CEPH_IOC_SYNCIO: | |
337 | return "syncio"; | |
338 | case FS_IOC_SET_ENCRYPTION_POLICY: | |
339 | return "set_encryption_policy"; | |
340 | case FS_IOC_GET_ENCRYPTION_POLICY: | |
341 | return "get_encryption_policy"; | |
342 | case FS_IOC_GET_ENCRYPTION_POLICY_EX: | |
343 | return "get_encryption_policy_ex"; | |
344 | case FS_IOC_ADD_ENCRYPTION_KEY: | |
345 | return "add_encryption_key"; | |
346 | case FS_IOC_REMOVE_ENCRYPTION_KEY: | |
347 | return "remove_encryption_key"; | |
348 | case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: | |
349 | return "remove_encryption_key_all_users"; | |
350 | case FS_IOC_GET_ENCRYPTION_KEY_STATUS: | |
351 | return "get_encryption_key_status"; | |
352 | case FS_IOC_GET_ENCRYPTION_NONCE: | |
353 | return "get_encryption_nonce"; | |
354 | default: | |
355 | return "unknown"; | |
356 | } | |
357 | } | |
358 | ||
8f4e91de SW |
359 | long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
360 | { | |
38d46409 XL |
361 | struct inode *inode = file_inode(file); |
362 | struct ceph_fs_client *fsc = ceph_inode_to_fs_client(inode); | |
f061feda JL |
363 | int ret; |
364 | ||
38d46409 XL |
365 | doutc(fsc->client, "file %p %p %llx.%llx cmd %s arg %lu\n", file, |
366 | inode, ceph_vinop(inode), ceph_ioctl_cmd_name(cmd), arg); | |
8f4e91de SW |
367 | switch (cmd) { |
368 | case CEPH_IOC_GET_LAYOUT: | |
369 | return ceph_ioctl_get_layout(file, (void __user *)arg); | |
370 | ||
371 | case CEPH_IOC_SET_LAYOUT: | |
372 | return ceph_ioctl_set_layout(file, (void __user *)arg); | |
373 | ||
571dba52 GF |
374 | case CEPH_IOC_SET_LAYOUT_POLICY: |
375 | return ceph_ioctl_set_layout_policy(file, (void __user *)arg); | |
376 | ||
8f4e91de SW |
377 | case CEPH_IOC_GET_DATALOC: |
378 | return ceph_ioctl_get_dataloc(file, (void __user *)arg); | |
8c6e9229 SW |
379 | |
380 | case CEPH_IOC_LAZYIO: | |
381 | return ceph_ioctl_lazyio(file); | |
4918b6d1 SW |
382 | |
383 | case CEPH_IOC_SYNCIO: | |
384 | return ceph_ioctl_syncio(file); | |
f061feda JL |
385 | |
386 | case FS_IOC_SET_ENCRYPTION_POLICY: | |
387 | return ceph_set_encryption_policy(file, arg); | |
388 | ||
389 | case FS_IOC_GET_ENCRYPTION_POLICY: | |
390 | ret = vet_mds_for_fscrypt(file); | |
391 | if (ret) | |
392 | return ret; | |
393 | return fscrypt_ioctl_get_policy(file, (void __user *)arg); | |
394 | ||
395 | case FS_IOC_GET_ENCRYPTION_POLICY_EX: | |
396 | ret = vet_mds_for_fscrypt(file); | |
397 | if (ret) | |
398 | return ret; | |
399 | return fscrypt_ioctl_get_policy_ex(file, (void __user *)arg); | |
400 | ||
401 | case FS_IOC_ADD_ENCRYPTION_KEY: | |
402 | ret = vet_mds_for_fscrypt(file); | |
403 | if (ret) | |
404 | return ret; | |
405 | return fscrypt_ioctl_add_key(file, (void __user *)arg); | |
406 | ||
407 | case FS_IOC_REMOVE_ENCRYPTION_KEY: | |
408 | return fscrypt_ioctl_remove_key(file, (void __user *)arg); | |
409 | ||
410 | case FS_IOC_REMOVE_ENCRYPTION_KEY_ALL_USERS: | |
411 | return fscrypt_ioctl_remove_key_all_users(file, | |
412 | (void __user *)arg); | |
413 | ||
414 | case FS_IOC_GET_ENCRYPTION_KEY_STATUS: | |
415 | return fscrypt_ioctl_get_key_status(file, (void __user *)arg); | |
416 | ||
417 | case FS_IOC_GET_ENCRYPTION_NONCE: | |
418 | ret = vet_mds_for_fscrypt(file); | |
419 | if (ret) | |
420 | return ret; | |
421 | return fscrypt_ioctl_get_nonce(file, (void __user *)arg); | |
8f4e91de | 422 | } |
571dba52 | 423 | |
8f4e91de SW |
424 | return -ENOTTY; |
425 | } |