Blame view
fs/ceph/xattr.c
27.5 KB
3d14c5d2b ceph: factor out ... |
1 |
#include <linux/ceph/ceph_debug.h> |
25e6bae35 ceph: use pagelis... |
2 |
#include <linux/ceph/pagelist.h> |
3d14c5d2b ceph: factor out ... |
3 |
|
355da1eb7 ceph: inode opera... |
4 |
#include "super.h" |
3d14c5d2b ceph: factor out ... |
5 6 7 |
#include "mds_client.h" #include <linux/ceph/decode.h> |
355da1eb7 ceph: inode opera... |
8 9 |
#include <linux/xattr.h> |
4db658ea0 ceph: Fix up afte... |
10 |
#include <linux/posix_acl_xattr.h> |
5a0e3ad6a include cleanup: ... |
11 |
#include <linux/slab.h> |
355da1eb7 ceph: inode opera... |
12 |
|
228919071 ceph: use a symbo... |
13 14 |
#define XATTR_CEPH_PREFIX "ceph." #define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1) |
bcdfeb2eb ceph: remove xatt... |
15 16 |
static int __remove_xattr(struct ceph_inode_info *ci, struct ceph_inode_xattr *xattr); |
5130ccea7 ceph: fix non sta... |
17 |
static const struct xattr_handler ceph_other_xattr_handler; |
2cdeb1e47 ceph: Switch to g... |
18 |
|
7221fe4c2 ceph: add acl for... |
19 20 21 22 23 24 |
/* * List of handlers for synthetic system.* attributes. Other * attributes are handled directly. */ const struct xattr_handler *ceph_xattr_handlers[] = { #ifdef CONFIG_CEPH_FS_POSIX_ACL |
4db658ea0 ceph: Fix up afte... |
25 26 |
&posix_acl_access_xattr_handler, &posix_acl_default_xattr_handler, |
7221fe4c2 ceph: add acl for... |
27 |
#endif |
2cdeb1e47 ceph: Switch to g... |
28 |
&ceph_other_xattr_handler, |
7221fe4c2 ceph: add acl for... |
29 30 |
NULL, }; |
355da1eb7 ceph: inode opera... |
31 32 |
static bool ceph_is_valid_xattr(const char *name) { |
228919071 ceph: use a symbo... |
33 |
return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) || |
1a7562789 ceph: use ceph. p... |
34 |
!strncmp(name, XATTR_SECURITY_PREFIX, |
355da1eb7 ceph: inode opera... |
35 36 37 38 39 40 41 42 43 |
XATTR_SECURITY_PREFIX_LEN) || !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); } /* * These define virtual xattrs exposing the recursive directory * statistics and layout metadata. */ |
881a5fa20 ceph: drop "_cb" ... |
44 |
struct ceph_vxattr { |
355da1eb7 ceph: inode opera... |
45 |
char *name; |
3ce6cd123 ceph: avoid repea... |
46 |
size_t name_size; /* strlen(name) + 1 (for '\0') */ |
355da1eb7 ceph: inode opera... |
47 48 |
size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val, size_t size); |
8860147a0 ceph: support hid... |
49 |
bool readonly, hidden; |
f36e44729 ceph: add exists_... |
50 |
bool (*exists_cb)(struct ceph_inode_info *ci); |
355da1eb7 ceph: inode opera... |
51 |
}; |
32ab0bd78 ceph: change ceph... |
52 53 54 55 |
/* layouts */ static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci) { |
779fe0fb8 ceph: rados pool ... |
56 57 58 59 |
struct ceph_file_layout *fl = &ci->i_layout; return (fl->stripe_unit > 0 || fl->stripe_count > 0 || fl->object_size > 0 || fl->pool_id >= 0 || rcu_dereference_raw(fl->pool_ns) != NULL); |
32ab0bd78 ceph: change ceph... |
60 61 62 |
} static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, |
1e5c6649f ceph: check buffe... |
63 |
size_t size) |
32ab0bd78 ceph: change ceph... |
64 |
{ |
32ab0bd78 ceph: change ceph... |
65 66 |
struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); struct ceph_osd_client *osdc = &fsc->client->osdc; |
779fe0fb8 ceph: rados pool ... |
67 |
struct ceph_string *pool_ns; |
7627151ea libceph: define n... |
68 |
s64 pool = ci->i_layout.pool_id; |
32ab0bd78 ceph: change ceph... |
69 |
const char *pool_name; |
779fe0fb8 ceph: rados pool ... |
70 |
const char *ns_field = " pool_namespace="; |
1e5c6649f ceph: check buffe... |
71 |
char buf[128]; |
779fe0fb8 ceph: rados pool ... |
72 73 74 75 |
size_t len, total_len = 0; int ret; pool_ns = ceph_try_get_string(ci->i_layout.pool_ns); |
32ab0bd78 ceph: change ceph... |
76 77 78 |
dout("ceph_vxattrcb_layout %p ", &ci->vfs_inode); |
5aea3dcd5 libceph: a major ... |
79 |
down_read(&osdc->lock); |
32ab0bd78 ceph: change ceph... |
80 |
pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); |
1e5c6649f ceph: check buffe... |
81 |
if (pool_name) { |
779fe0fb8 ceph: rados pool ... |
82 |
len = snprintf(buf, sizeof(buf), |
7627151ea libceph: define n... |
83 84 85 |
"stripe_unit=%u stripe_count=%u object_size=%u pool=", ci->i_layout.stripe_unit, ci->i_layout.stripe_count, ci->i_layout.object_size); |
779fe0fb8 ceph: rados pool ... |
86 |
total_len = len + strlen(pool_name); |
1e5c6649f ceph: check buffe... |
87 |
} else { |
779fe0fb8 ceph: rados pool ... |
88 |
len = snprintf(buf, sizeof(buf), |
7627151ea libceph: define n... |
89 90 91 |
"stripe_unit=%u stripe_count=%u object_size=%u pool=%lld", ci->i_layout.stripe_unit, ci->i_layout.stripe_count, ci->i_layout.object_size, (unsigned long long)pool); |
779fe0fb8 ceph: rados pool ... |
92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 |
total_len = len; } if (pool_ns) total_len += strlen(ns_field) + pool_ns->len; if (!size) { ret = total_len; } else if (total_len > size) { ret = -ERANGE; } else { memcpy(val, buf, len); ret = len; if (pool_name) { len = strlen(pool_name); memcpy(val + ret, pool_name, len); ret += len; } if (pool_ns) { len = strlen(ns_field); memcpy(val + ret, ns_field, len); ret += len; memcpy(val + ret, pool_ns->str, pool_ns->len); ret += pool_ns->len; |
1e5c6649f ceph: check buffe... |
116 117 |
} } |
5aea3dcd5 libceph: a major ... |
118 |
up_read(&osdc->lock); |
779fe0fb8 ceph: rados pool ... |
119 |
ceph_put_string(pool_ns); |
32ab0bd78 ceph: change ceph... |
120 121 |
return ret; } |
695b71193 ceph: implement h... |
122 123 124 |
static size_t ceph_vxattrcb_layout_stripe_unit(struct ceph_inode_info *ci, char *val, size_t size) { |
7627151ea libceph: define n... |
125 |
return snprintf(val, size, "%u", ci->i_layout.stripe_unit); |
695b71193 ceph: implement h... |
126 127 128 129 130 |
} static size_t ceph_vxattrcb_layout_stripe_count(struct ceph_inode_info *ci, char *val, size_t size) { |
7627151ea libceph: define n... |
131 |
return snprintf(val, size, "%u", ci->i_layout.stripe_count); |
695b71193 ceph: implement h... |
132 133 134 135 136 |
} static size_t ceph_vxattrcb_layout_object_size(struct ceph_inode_info *ci, char *val, size_t size) { |
7627151ea libceph: define n... |
137 |
return snprintf(val, size, "%u", ci->i_layout.object_size); |
695b71193 ceph: implement h... |
138 139 140 141 142 143 144 145 |
} static size_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci, char *val, size_t size) { int ret; struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); struct ceph_osd_client *osdc = &fsc->client->osdc; |
7627151ea libceph: define n... |
146 |
s64 pool = ci->i_layout.pool_id; |
695b71193 ceph: implement h... |
147 |
const char *pool_name; |
5aea3dcd5 libceph: a major ... |
148 |
down_read(&osdc->lock); |
695b71193 ceph: implement h... |
149 150 151 152 153 |
pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); if (pool_name) ret = snprintf(val, size, "%s", pool_name); else ret = snprintf(val, size, "%lld", (unsigned long long)pool); |
5aea3dcd5 libceph: a major ... |
154 |
up_read(&osdc->lock); |
695b71193 ceph: implement h... |
155 156 |
return ret; } |
779fe0fb8 ceph: rados pool ... |
157 158 159 160 161 162 163 164 165 166 167 |
static size_t ceph_vxattrcb_layout_pool_namespace(struct ceph_inode_info *ci, char *val, size_t size) { int ret = 0; struct ceph_string *ns = ceph_try_get_string(ci->i_layout.pool_ns); if (ns) { ret = snprintf(val, size, "%.*s", (int)ns->len, ns->str); ceph_put_string(ns); } return ret; } |
355da1eb7 ceph: inode opera... |
168 |
/* directories */ |
aa4066ed7 ceph: encode type... |
169 |
static size_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
170 171 172 173 |
size_t size) { return snprintf(val, size, "%lld", ci->i_files + ci->i_subdirs); } |
aa4066ed7 ceph: encode type... |
174 |
static size_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
175 176 177 178 |
size_t size) { return snprintf(val, size, "%lld", ci->i_files); } |
aa4066ed7 ceph: encode type... |
179 |
static size_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
180 181 182 183 |
size_t size) { return snprintf(val, size, "%lld", ci->i_subdirs); } |
aa4066ed7 ceph: encode type... |
184 |
static size_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
185 186 187 188 |
size_t size) { return snprintf(val, size, "%lld", ci->i_rfiles + ci->i_rsubdirs); } |
aa4066ed7 ceph: encode type... |
189 |
static size_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
190 191 192 193 |
size_t size) { return snprintf(val, size, "%lld", ci->i_rfiles); } |
aa4066ed7 ceph: encode type... |
194 |
static size_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
195 196 197 198 |
size_t size) { return snprintf(val, size, "%lld", ci->i_rsubdirs); } |
aa4066ed7 ceph: encode type... |
199 |
static size_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
200 201 202 203 |
size_t size) { return snprintf(val, size, "%lld", ci->i_rbytes); } |
aa4066ed7 ceph: encode type... |
204 |
static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val, |
355da1eb7 ceph: inode opera... |
205 206 |
size_t size) { |
3489b42a7 ceph: fix three b... |
207 |
return snprintf(val, size, "%ld.09%ld", (long)ci->i_rctime.tv_sec, |
355da1eb7 ceph: inode opera... |
208 209 |
(long)ci->i_rctime.tv_nsec); } |
32ab0bd78 ceph: change ceph... |
210 |
|
eb7880844 ceph: use macros ... |
211 |
#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name |
695b71193 ceph: implement h... |
212 213 |
#define CEPH_XATTR_NAME2(_type, _name, _name2) \ XATTR_CEPH_PREFIX #_type "." #_name "." #_name2 |
eb7880844 ceph: use macros ... |
214 |
|
8860147a0 ceph: support hid... |
215 216 217 218 219 220 221 |
#define XATTR_NAME_CEPH(_type, _name) \ { \ .name = CEPH_XATTR_NAME(_type, _name), \ .name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \ .getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \ .readonly = true, \ .hidden = false, \ |
f36e44729 ceph: add exists_... |
222 |
.exists_cb = NULL, \ |
8860147a0 ceph: support hid... |
223 |
} |
695b71193 ceph: implement h... |
224 225 226 227 228 229 230 231 232 |
#define XATTR_LAYOUT_FIELD(_type, _name, _field) \ { \ .name = CEPH_XATTR_NAME2(_type, _name, _field), \ .name_size = sizeof (CEPH_XATTR_NAME2(_type, _name, _field)), \ .getxattr_cb = ceph_vxattrcb_ ## _name ## _ ## _field, \ .readonly = false, \ .hidden = true, \ .exists_cb = ceph_vxattrcb_layout_exists, \ } |
eb7880844 ceph: use macros ... |
233 |
|
881a5fa20 ceph: drop "_cb" ... |
234 |
static struct ceph_vxattr ceph_dir_vxattrs[] = { |
1f08f2b05 ceph: add ceph.di... |
235 236 237 238 239 |
{ .name = "ceph.dir.layout", .name_size = sizeof("ceph.dir.layout"), .getxattr_cb = ceph_vxattrcb_layout, .readonly = false, |
cc48c3e85 ceph: don't inclu... |
240 |
.hidden = true, |
1f08f2b05 ceph: add ceph.di... |
241 242 |
.exists_cb = ceph_vxattrcb_layout_exists, }, |
695b71193 ceph: implement h... |
243 244 245 246 |
XATTR_LAYOUT_FIELD(dir, layout, stripe_unit), XATTR_LAYOUT_FIELD(dir, layout, stripe_count), XATTR_LAYOUT_FIELD(dir, layout, object_size), XATTR_LAYOUT_FIELD(dir, layout, pool), |
779fe0fb8 ceph: rados pool ... |
247 |
XATTR_LAYOUT_FIELD(dir, layout, pool_namespace), |
eb7880844 ceph: use macros ... |
248 249 250 251 252 253 254 255 |
XATTR_NAME_CEPH(dir, entries), XATTR_NAME_CEPH(dir, files), XATTR_NAME_CEPH(dir, subdirs), XATTR_NAME_CEPH(dir, rentries), XATTR_NAME_CEPH(dir, rfiles), XATTR_NAME_CEPH(dir, rsubdirs), XATTR_NAME_CEPH(dir, rbytes), XATTR_NAME_CEPH(dir, rctime), |
2c3dd4ff5 ceph: eliminate s... |
256 |
{ .name = NULL, 0 } /* Required table terminator */ |
355da1eb7 ceph: inode opera... |
257 |
}; |
3ce6cd123 ceph: avoid repea... |
258 |
static size_t ceph_dir_vxattrs_name_size; /* total size of all names */ |
355da1eb7 ceph: inode opera... |
259 260 |
/* files */ |
881a5fa20 ceph: drop "_cb" ... |
261 |
static struct ceph_vxattr ceph_file_vxattrs[] = { |
32ab0bd78 ceph: change ceph... |
262 263 264 265 266 |
{ .name = "ceph.file.layout", .name_size = sizeof("ceph.file.layout"), .getxattr_cb = ceph_vxattrcb_layout, .readonly = false, |
cc48c3e85 ceph: don't inclu... |
267 |
.hidden = true, |
32ab0bd78 ceph: change ceph... |
268 269 |
.exists_cb = ceph_vxattrcb_layout_exists, }, |
695b71193 ceph: implement h... |
270 271 272 273 |
XATTR_LAYOUT_FIELD(file, layout, stripe_unit), XATTR_LAYOUT_FIELD(file, layout, stripe_count), XATTR_LAYOUT_FIELD(file, layout, object_size), XATTR_LAYOUT_FIELD(file, layout, pool), |
779fe0fb8 ceph: rados pool ... |
274 |
XATTR_LAYOUT_FIELD(file, layout, pool_namespace), |
2c3dd4ff5 ceph: eliminate s... |
275 |
{ .name = NULL, 0 } /* Required table terminator */ |
355da1eb7 ceph: inode opera... |
276 |
}; |
3ce6cd123 ceph: avoid repea... |
277 |
static size_t ceph_file_vxattrs_name_size; /* total size of all names */ |
355da1eb7 ceph: inode opera... |
278 |
|
881a5fa20 ceph: drop "_cb" ... |
279 |
static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode) |
355da1eb7 ceph: inode opera... |
280 281 282 283 284 285 286 |
{ if (S_ISDIR(inode->i_mode)) return ceph_dir_vxattrs; else if (S_ISREG(inode->i_mode)) return ceph_file_vxattrs; return NULL; } |
3ce6cd123 ceph: avoid repea... |
287 288 289 290 291 292 |
static size_t ceph_vxattrs_name_size(struct ceph_vxattr *vxattrs) { if (vxattrs == ceph_dir_vxattrs) return ceph_dir_vxattrs_name_size; if (vxattrs == ceph_file_vxattrs) return ceph_file_vxattrs_name_size; |
0abb43dca ceph: fix llistxa... |
293 |
BUG_ON(vxattrs); |
3ce6cd123 ceph: avoid repea... |
294 295 296 297 298 299 300 301 302 303 304 305 306 |
return 0; } /* * Compute the aggregate size (including terminating '\0') of all * virtual extended attribute names in the given vxattr table. */ static size_t __init vxattrs_name_size(struct ceph_vxattr *vxattrs) { struct ceph_vxattr *vxattr; size_t size = 0; for (vxattr = vxattrs; vxattr->name; vxattr++) |
8860147a0 ceph: support hid... |
307 308 |
if (!vxattr->hidden) size += vxattr->name_size; |
3ce6cd123 ceph: avoid repea... |
309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 |
return size; } /* Routines called at initialization and exit time */ void __init ceph_xattr_init(void) { ceph_dir_vxattrs_name_size = vxattrs_name_size(ceph_dir_vxattrs); ceph_file_vxattrs_name_size = vxattrs_name_size(ceph_file_vxattrs); } void ceph_xattr_exit(void) { ceph_dir_vxattrs_name_size = 0; ceph_file_vxattrs_name_size = 0; } |
881a5fa20 ceph: drop "_cb" ... |
326 |
static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode, |
355da1eb7 ceph: inode opera... |
327 328 |
const char *name) { |
881a5fa20 ceph: drop "_cb" ... |
329 |
struct ceph_vxattr *vxattr = ceph_inode_vxattrs(inode); |
06476a69d ceph: pass inode ... |
330 331 332 333 334 335 336 337 |
if (vxattr) { while (vxattr->name) { if (!strcmp(vxattr->name, name)) return vxattr; vxattr++; } } |
355da1eb7 ceph: inode opera... |
338 339 340 341 342 343 |
return NULL; } static int __set_xattr(struct ceph_inode_info *ci, const char *name, int name_len, const char *val, int val_len, |
fbc0b970d ceph: properly ha... |
344 |
int flags, int update_xattr, |
355da1eb7 ceph: inode opera... |
345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 |
struct ceph_inode_xattr **newxattr) { struct rb_node **p; struct rb_node *parent = NULL; struct ceph_inode_xattr *xattr = NULL; int c; int new = 0; p = &ci->i_xattrs.index.rb_node; while (*p) { parent = *p; xattr = rb_entry(parent, struct ceph_inode_xattr, node); c = strncmp(name, xattr->name, min(name_len, xattr->name_len)); if (c < 0) p = &(*p)->rb_left; else if (c > 0) p = &(*p)->rb_right; else { if (name_len == xattr->name_len) break; else if (name_len < xattr->name_len) p = &(*p)->rb_left; else p = &(*p)->rb_right; } xattr = NULL; } |
fbc0b970d ceph: properly ha... |
372 373 374 375 376 377 378 379 380 381 382 |
if (update_xattr) { int err = 0; if (xattr && (flags & XATTR_CREATE)) err = -EEXIST; else if (!xattr && (flags & XATTR_REPLACE)) err = -ENODATA; if (err) { kfree(name); kfree(val); return err; } |
bcdfeb2eb ceph: remove xatt... |
383 384 385 386 387 388 |
if (update_xattr < 0) { if (xattr) __remove_xattr(ci, xattr); kfree(name); return 0; } |
fbc0b970d ceph: properly ha... |
389 |
} |
355da1eb7 ceph: inode opera... |
390 391 392 393 394 |
if (!xattr) { new = 1; xattr = *newxattr; xattr->name = name; xattr->name_len = name_len; |
fbc0b970d ceph: properly ha... |
395 |
xattr->should_free_name = update_xattr; |
355da1eb7 ceph: inode opera... |
396 397 398 399 400 401 402 403 404 |
ci->i_xattrs.count++; dout("__set_xattr count=%d ", ci->i_xattrs.count); } else { kfree(*newxattr); *newxattr = NULL; if (xattr->should_free_val) kfree((void *)xattr->val); |
fbc0b970d ceph: properly ha... |
405 |
if (update_xattr) { |
355da1eb7 ceph: inode opera... |
406 407 408 409 410 411 |
kfree((void *)name); name = xattr->name; } ci->i_xattrs.names_size -= xattr->name_len; ci->i_xattrs.vals_size -= xattr->val_len; } |
355da1eb7 ceph: inode opera... |
412 413 414 415 416 417 418 419 |
ci->i_xattrs.names_size += name_len; ci->i_xattrs.vals_size += val_len; if (val) xattr->val = val; else xattr->val = ""; xattr->val_len = val_len; |
fbc0b970d ceph: properly ha... |
420 421 |
xattr->dirty = update_xattr; xattr->should_free_val = (val && update_xattr); |
355da1eb7 ceph: inode opera... |
422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 |
if (new) { rb_link_node(&xattr->node, parent, p); rb_insert_color(&xattr->node, &ci->i_xattrs.index); dout("__set_xattr_val p=%p ", p); } dout("__set_xattr_val added %llx.%llx xattr %p %s=%.*s ", ceph_vinop(&ci->vfs_inode), xattr, name, val_len, val); return 0; } static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci, const char *name) { struct rb_node **p; struct rb_node *parent = NULL; struct ceph_inode_xattr *xattr = NULL; |
17db143fc ceph: fix xattr r... |
443 |
int name_len = strlen(name); |
355da1eb7 ceph: inode opera... |
444 445 446 447 448 449 450 |
int c; p = &ci->i_xattrs.index.rb_node; while (*p) { parent = *p; xattr = rb_entry(parent, struct ceph_inode_xattr, node); c = strncmp(name, xattr->name, xattr->name_len); |
17db143fc ceph: fix xattr r... |
451 452 |
if (c == 0 && name_len > xattr->name_len) c = 1; |
355da1eb7 ceph: inode opera... |
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 |
if (c < 0) p = &(*p)->rb_left; else if (c > 0) p = &(*p)->rb_right; else { dout("__get_xattr %s: found %.*s ", name, xattr->val_len, xattr->val); return xattr; } } dout("__get_xattr %s: not found ", name); return NULL; } static void __free_xattr(struct ceph_inode_xattr *xattr) { BUG_ON(!xattr); if (xattr->should_free_name) kfree((void *)xattr->name); if (xattr->should_free_val) kfree((void *)xattr->val); kfree(xattr); } static int __remove_xattr(struct ceph_inode_info *ci, struct ceph_inode_xattr *xattr) { if (!xattr) |
524186ace ceph: fix ceph_re... |
487 |
return -ENODATA; |
355da1eb7 ceph: inode opera... |
488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 |
rb_erase(&xattr->node, &ci->i_xattrs.index); if (xattr->should_free_name) kfree((void *)xattr->name); if (xattr->should_free_val) kfree((void *)xattr->val); ci->i_xattrs.names_size -= xattr->name_len; ci->i_xattrs.vals_size -= xattr->val_len; ci->i_xattrs.count--; kfree(xattr); return 0; } |
355da1eb7 ceph: inode opera... |
503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 |
static char *__copy_xattr_names(struct ceph_inode_info *ci, char *dest) { struct rb_node *p; struct ceph_inode_xattr *xattr = NULL; p = rb_first(&ci->i_xattrs.index); dout("__copy_xattr_names count=%d ", ci->i_xattrs.count); while (p) { xattr = rb_entry(p, struct ceph_inode_xattr, node); memcpy(dest, xattr->name, xattr->name_len); dest[xattr->name_len] = '\0'; dout("dest=%s %p (%s) (%d/%d) ", dest, xattr, xattr->name, xattr->name_len, ci->i_xattrs.names_size); dest += xattr->name_len + 1; p = rb_next(p); } return dest; } void __ceph_destroy_xattrs(struct ceph_inode_info *ci) { struct rb_node *p, *tmp; struct ceph_inode_xattr *xattr = NULL; p = rb_first(&ci->i_xattrs.index); dout("__ceph_destroy_xattrs p=%p ", p); while (p) { xattr = rb_entry(p, struct ceph_inode_xattr, node); tmp = p; p = rb_next(tmp); dout("__ceph_destroy_xattrs next p=%p (%.*s) ", p, xattr->name_len, xattr->name); rb_erase(tmp, &ci->i_xattrs.index); __free_xattr(xattr); } ci->i_xattrs.names_size = 0; ci->i_xattrs.vals_size = 0; ci->i_xattrs.index_version = 0; ci->i_xattrs.count = 0; ci->i_xattrs.index = RB_ROOT; } static int __build_xattrs(struct inode *inode) |
be655596b ceph: use i_ceph_... |
559 560 |
__releases(ci->i_ceph_lock) __acquires(ci->i_ceph_lock) |
355da1eb7 ceph: inode opera... |
561 562 563 564 565 566 567 568 569 |
{ u32 namelen; u32 numattr = 0; void *p, *end; u32 len; const char *name, *val; struct ceph_inode_info *ci = ceph_inode(inode); int xattr_version; struct ceph_inode_xattr **xattrs = NULL; |
63ff78b25 ceph: fix uniniti... |
570 |
int err = 0; |
355da1eb7 ceph: inode opera... |
571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 |
int i; dout("__build_xattrs() len=%d ", ci->i_xattrs.blob ? (int)ci->i_xattrs.blob->vec.iov_len : 0); if (ci->i_xattrs.index_version >= ci->i_xattrs.version) return 0; /* already built */ __ceph_destroy_xattrs(ci); start: /* updated internal xattr rb tree */ if (ci->i_xattrs.blob && ci->i_xattrs.blob->vec.iov_len > 4) { p = ci->i_xattrs.blob->vec.iov_base; end = p + ci->i_xattrs.blob->vec.iov_len; ceph_decode_32_safe(&p, end, numattr, bad); xattr_version = ci->i_xattrs.version; |
be655596b ceph: use i_ceph_... |
589 |
spin_unlock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
590 |
|
7e8a29529 ceph: fix sizeof(... |
591 |
xattrs = kcalloc(numattr, sizeof(struct ceph_inode_xattr *), |
355da1eb7 ceph: inode opera... |
592 593 594 595 |
GFP_NOFS); err = -ENOMEM; if (!xattrs) goto bad_lock; |
1a295bd8c ceph: remove redu... |
596 |
|
355da1eb7 ceph: inode opera... |
597 598 599 600 601 602 |
for (i = 0; i < numattr; i++) { xattrs[i] = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS); if (!xattrs[i]) goto bad_lock; } |
be655596b ceph: use i_ceph_... |
603 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
604 605 606 607 608 |
if (ci->i_xattrs.version != xattr_version) { /* lost a race, retry */ for (i = 0; i < numattr; i++) kfree(xattrs[i]); kfree(xattrs); |
21ec6ffa4 ceph: fix potenti... |
609 |
xattrs = NULL; |
355da1eb7 ceph: inode opera... |
610 611 612 613 614 615 616 617 618 619 620 621 622 |
goto start; } err = -EIO; while (numattr--) { ceph_decode_32_safe(&p, end, len, bad); namelen = len; name = p; p += len; ceph_decode_32_safe(&p, end, len, bad); val = p; p += len; err = __set_xattr(ci, name, namelen, val, len, |
fbc0b970d ceph: properly ha... |
623 |
0, 0, &xattrs[numattr]); |
355da1eb7 ceph: inode opera... |
624 625 626 627 628 629 630 631 632 633 634 |
if (err < 0) goto bad; } kfree(xattrs); } ci->i_xattrs.index_version = ci->i_xattrs.version; ci->i_xattrs.dirty = false; return err; bad_lock: |
be655596b ceph: use i_ceph_... |
635 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 |
bad: if (xattrs) { for (i = 0; i < numattr; i++) kfree(xattrs[i]); kfree(xattrs); } ci->i_xattrs.names_size = 0; return err; } static int __get_required_blob_size(struct ceph_inode_info *ci, int name_size, int val_size) { /* * 4 bytes for the length, and additional 4 bytes per each xattr name, * 4 bytes per each value */ int size = 4 + ci->i_xattrs.count*(4 + 4) + ci->i_xattrs.names_size + ci->i_xattrs.vals_size; dout("__get_required_blob_size c=%d names.size=%d vals.size=%d ", ci->i_xattrs.count, ci->i_xattrs.names_size, ci->i_xattrs.vals_size); if (name_size) size += 4 + 4 + name_size + val_size; return size; } /* * If there are dirty xattrs, reencode xattrs into the prealloc_blob * and swap into place. */ void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) { struct rb_node *p; struct ceph_inode_xattr *xattr = NULL; void *dest; dout("__build_xattrs_blob %p ", &ci->vfs_inode); if (ci->i_xattrs.dirty) { int need = __get_required_blob_size(ci, 0, 0); BUG_ON(need > ci->i_xattrs.prealloc_blob->alloc_len); p = rb_first(&ci->i_xattrs.index); dest = ci->i_xattrs.prealloc_blob->vec.iov_base; ceph_encode_32(&dest, ci->i_xattrs.count); while (p) { xattr = rb_entry(p, struct ceph_inode_xattr, node); ceph_encode_32(&dest, xattr->name_len); memcpy(dest, xattr->name, xattr->name_len); dest += xattr->name_len; ceph_encode_32(&dest, xattr->val_len); memcpy(dest, xattr->val, xattr->val_len); dest += xattr->val_len; p = rb_next(p); } /* adjust buffer len; it may be larger than we need */ ci->i_xattrs.prealloc_blob->vec.iov_len = dest - ci->i_xattrs.prealloc_blob->vec.iov_base; |
b6c1d5b81 ceph: simplify ce... |
704 705 |
if (ci->i_xattrs.blob) ceph_buffer_put(ci->i_xattrs.blob); |
355da1eb7 ceph: inode opera... |
706 707 708 |
ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob; ci->i_xattrs.prealloc_blob = NULL; ci->i_xattrs.dirty = false; |
4a625be47 ceph: include dir... |
709 |
ci->i_xattrs.version++; |
355da1eb7 ceph: inode opera... |
710 711 |
} } |
315f24088 ceph: fix securit... |
712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 |
static inline int __get_request_mask(struct inode *in) { struct ceph_mds_request *req = current->journal_info; int mask = 0; if (req && req->r_target_inode == in) { if (req->r_op == CEPH_MDS_OP_LOOKUP || req->r_op == CEPH_MDS_OP_LOOKUPINO || req->r_op == CEPH_MDS_OP_LOOKUPPARENT || req->r_op == CEPH_MDS_OP_GETATTR) { mask = le32_to_cpu(req->r_args.getattr.mask); } else if (req->r_op == CEPH_MDS_OP_OPEN || req->r_op == CEPH_MDS_OP_CREATE) { mask = le32_to_cpu(req->r_args.open.mask); } } return mask; } |
7221fe4c2 ceph: add acl for... |
728 |
ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value, |
355da1eb7 ceph: inode opera... |
729 730 |
size_t size) { |
355da1eb7 ceph: inode opera... |
731 |
struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb7 ceph: inode opera... |
732 |
struct ceph_inode_xattr *xattr; |
881a5fa20 ceph: drop "_cb" ... |
733 |
struct ceph_vxattr *vxattr = NULL; |
315f24088 ceph: fix securit... |
734 735 |
int req_mask; int err; |
355da1eb7 ceph: inode opera... |
736 |
|
0bee82fb4 ceph: fix getxatt... |
737 738 |
/* let's see if a virtual xattr was requested */ vxattr = ceph_match_vxattr(inode, name); |
29dccfa5a ceph: don't reque... |
739 740 741 742 |
if (vxattr) { err = -ENODATA; if (!(vxattr->exists_cb && !vxattr->exists_cb(ci))) err = vxattr->getxattr_cb(ci, value, size); |
a1dc19373 ceph: fix sleepin... |
743 |
return err; |
0bee82fb4 ceph: fix getxatt... |
744 |
} |
315f24088 ceph: fix securit... |
745 |
req_mask = __get_request_mask(inode); |
a1dc19373 ceph: fix sleepin... |
746 747 748 749 |
spin_lock(&ci->i_ceph_lock); dout("getxattr %p ver=%lld index_ver=%lld ", inode, ci->i_xattrs.version, ci->i_xattrs.index_version); |
508b32d86 ceph: request xat... |
750 |
if (ci->i_xattrs.version == 0 || |
315f24088 ceph: fix securit... |
751 752 |
!((req_mask & CEPH_CAP_XATTR_SHARED) || __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1))) { |
be655596b ceph: use i_ceph_... |
753 |
spin_unlock(&ci->i_ceph_lock); |
315f24088 ceph: fix securit... |
754 755 756 757 758 759 760 761 |
/* security module gets xattr while filling trace */ if (current->journal_info != NULL) { pr_warn_ratelimited("sync getxattr %p " "during filling trace ", inode); return -EBUSY; } |
355da1eb7 ceph: inode opera... |
762 |
/* get xattrs from mds (if we don't already have them) */ |
508b32d86 ceph: request xat... |
763 |
err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true); |
355da1eb7 ceph: inode opera... |
764 765 |
if (err) return err; |
508b32d86 ceph: request xat... |
766 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
767 |
} |
355da1eb7 ceph: inode opera... |
768 769 770 |
err = __build_xattrs(inode); if (err < 0) goto out; |
355da1eb7 ceph: inode opera... |
771 772 |
err = -ENODATA; /* == ENOATTR */ xattr = __get_xattr(ci, name); |
0bee82fb4 ceph: fix getxatt... |
773 |
if (!xattr) |
355da1eb7 ceph: inode opera... |
774 |
goto out; |
355da1eb7 ceph: inode opera... |
775 776 777 778 779 780 781 782 783 784 |
err = -ERANGE; if (size && size < xattr->val_len) goto out; err = xattr->val_len; if (size == 0) goto out; memcpy(value, xattr->val, xattr->val_len); |
315f24088 ceph: fix securit... |
785 786 787 |
if (current->journal_info != NULL && !strncmp(name, XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN)) ci->i_ceph_flags |= CEPH_I_SEC_INITED; |
355da1eb7 ceph: inode opera... |
788 |
out: |
be655596b ceph: use i_ceph_... |
789 |
spin_unlock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
790 791 792 793 794 |
return err; } ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) { |
2b0143b5c VFS: normal files... |
795 |
struct inode *inode = d_inode(dentry); |
355da1eb7 ceph: inode opera... |
796 |
struct ceph_inode_info *ci = ceph_inode(inode); |
881a5fa20 ceph: drop "_cb" ... |
797 |
struct ceph_vxattr *vxattrs = ceph_inode_vxattrs(inode); |
355da1eb7 ceph: inode opera... |
798 799 800 801 802 |
u32 vir_namelen = 0; u32 namelen; int err; u32 len; int i; |
be655596b ceph: use i_ceph_... |
803 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
804 805 806 |
dout("listxattr %p ver=%lld index_ver=%lld ", inode, ci->i_xattrs.version, ci->i_xattrs.index_version); |
508b32d86 ceph: request xat... |
807 808 |
if (ci->i_xattrs.version == 0 || !__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1)) { |
be655596b ceph: use i_ceph_... |
809 |
spin_unlock(&ci->i_ceph_lock); |
508b32d86 ceph: request xat... |
810 |
err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR, true); |
355da1eb7 ceph: inode opera... |
811 812 |
if (err) return err; |
508b32d86 ceph: request xat... |
813 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
814 |
} |
355da1eb7 ceph: inode opera... |
815 816 817 |
err = __build_xattrs(inode); if (err < 0) goto out; |
3ce6cd123 ceph: avoid repea... |
818 819 820 821 822 |
/* * Start with virtual dir xattr names (if any) (including * terminating '\0' characters for each). */ vir_namelen = ceph_vxattrs_name_size(vxattrs); |
355da1eb7 ceph: inode opera... |
823 |
/* adding 1 byte per each variable due to the null termination */ |
b65917dd2 ceph: fix listxat... |
824 |
namelen = ci->i_xattrs.names_size + ci->i_xattrs.count; |
355da1eb7 ceph: inode opera... |
825 |
err = -ERANGE; |
b65917dd2 ceph: fix listxat... |
826 |
if (size && vir_namelen + namelen > size) |
355da1eb7 ceph: inode opera... |
827 |
goto out; |
b65917dd2 ceph: fix listxat... |
828 |
err = namelen + vir_namelen; |
355da1eb7 ceph: inode opera... |
829 830 831 832 833 834 |
if (size == 0) goto out; names = __copy_xattr_names(ci, names); /* virtual xattr names, too */ |
b65917dd2 ceph: fix listxat... |
835 836 |
err = namelen; if (vxattrs) { |
355da1eb7 ceph: inode opera... |
837 |
for (i = 0; vxattrs[i].name; i++) { |
b65917dd2 ceph: fix listxat... |
838 839 840 841 842 843 844 |
if (!vxattrs[i].hidden && !(vxattrs[i].exists_cb && !vxattrs[i].exists_cb(ci))) { len = sprintf(names, "%s", vxattrs[i].name); names += len + 1; err += len + 1; } |
355da1eb7 ceph: inode opera... |
845 |
} |
b65917dd2 ceph: fix listxat... |
846 |
} |
355da1eb7 ceph: inode opera... |
847 848 |
out: |
be655596b ceph: use i_ceph_... |
849 |
spin_unlock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
850 851 |
return err; } |
a26feccab ceph: Get rid of ... |
852 |
static int ceph_sync_setxattr(struct inode *inode, const char *name, |
355da1eb7 ceph: inode opera... |
853 854 |
const char *value, size_t size, int flags) { |
a26feccab ceph: Get rid of ... |
855 |
struct ceph_fs_client *fsc = ceph_sb_to_client(inode->i_sb); |
355da1eb7 ceph: inode opera... |
856 |
struct ceph_inode_info *ci = ceph_inode(inode); |
355da1eb7 ceph: inode opera... |
857 |
struct ceph_mds_request *req; |
3d14c5d2b ceph: factor out ... |
858 |
struct ceph_mds_client *mdsc = fsc->mdsc; |
25e6bae35 ceph: use pagelis... |
859 |
struct ceph_pagelist *pagelist = NULL; |
04303d8ad ceph: use CEPH_MD... |
860 |
int op = CEPH_MDS_OP_SETXATTR; |
355da1eb7 ceph: inode opera... |
861 |
int err; |
25e6bae35 ceph: use pagelis... |
862 |
|
0aeff37ab ceph: fix setting... |
863 |
if (size > 0) { |
25e6bae35 ceph: use pagelis... |
864 865 866 |
/* copy value into pagelist */ pagelist = kmalloc(sizeof(*pagelist), GFP_NOFS); if (!pagelist) |
355da1eb7 ceph: inode opera... |
867 |
return -ENOMEM; |
25e6bae35 ceph: use pagelis... |
868 869 870 871 872 |
ceph_pagelist_init(pagelist); err = ceph_pagelist_append(pagelist, value, size); if (err) goto out; |
0aeff37ab ceph: fix setting... |
873 |
} else if (!value) { |
04303d8ad ceph: use CEPH_MD... |
874 875 876 877 |
if (flags & CEPH_XATTR_REPLACE) op = CEPH_MDS_OP_RMXATTR; else flags |= CEPH_XATTR_REMOVE; |
355da1eb7 ceph: inode opera... |
878 879 880 881 882 883 |
} dout("setxattr value=%.*s ", (int)size, value); /* do request */ |
04303d8ad ceph: use CEPH_MD... |
884 |
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS); |
60d877334 fs/ceph: introduc... |
885 886 887 888 |
if (IS_ERR(req)) { err = PTR_ERR(req); goto out; } |
a149bb9a2 ceph: kstrdup() m... |
889 |
|
355da1eb7 ceph: inode opera... |
890 |
req->r_path2 = kstrdup(name, GFP_NOFS); |
a149bb9a2 ceph: kstrdup() m... |
891 892 893 894 895 |
if (!req->r_path2) { ceph_mdsc_put_request(req); err = -ENOMEM; goto out; } |
355da1eb7 ceph: inode opera... |
896 |
|
04303d8ad ceph: use CEPH_MD... |
897 898 899 900 901 |
if (op == CEPH_MDS_OP_SETXATTR) { req->r_args.setxattr.flags = cpu_to_le32(flags); req->r_pagelist = pagelist; pagelist = NULL; } |
355da1eb7 ceph: inode opera... |
902 |
|
a149bb9a2 ceph: kstrdup() m... |
903 904 905 906 |
req->r_inode = inode; ihold(inode); req->r_num_caps = 1; req->r_inode_drop = CEPH_CAP_XATTR_SHARED; |
355da1eb7 ceph: inode opera... |
907 908 |
dout("xattr.ver (before): %lld ", ci->i_xattrs.version); |
752c8bdcf ceph: do not chai... |
909 |
err = ceph_mdsc_do_request(mdsc, NULL, req); |
355da1eb7 ceph: inode opera... |
910 911 912 913 914 |
ceph_mdsc_put_request(req); dout("xattr.ver (after): %lld ", ci->i_xattrs.version); out: |
25e6bae35 ceph: use pagelis... |
915 916 |
if (pagelist) ceph_pagelist_release(pagelist); |
355da1eb7 ceph: inode opera... |
917 918 |
return err; } |
a26feccab ceph: Get rid of ... |
919 |
int __ceph_setxattr(struct inode *inode, const char *name, |
7221fe4c2 ceph: add acl for... |
920 |
const void *value, size_t size, int flags) |
355da1eb7 ceph: inode opera... |
921 |
{ |
881a5fa20 ceph: drop "_cb" ... |
922 |
struct ceph_vxattr *vxattr; |
355da1eb7 ceph: inode opera... |
923 |
struct ceph_inode_info *ci = ceph_inode(inode); |
a26feccab ceph: Get rid of ... |
924 |
struct ceph_mds_client *mdsc = ceph_sb_to_client(inode->i_sb)->mdsc; |
f66fd9f09 ceph: pre-allocat... |
925 |
struct ceph_cap_flush *prealloc_cf = NULL; |
18fa8b3fe ceph: make ceph_s... |
926 |
int issued; |
355da1eb7 ceph: inode opera... |
927 |
int err; |
fbc0b970d ceph: properly ha... |
928 |
int dirty = 0; |
355da1eb7 ceph: inode opera... |
929 930 931 932 933 |
int name_len = strlen(name); int val_len = size; char *newname = NULL; char *newval = NULL; struct ceph_inode_xattr *xattr = NULL; |
355da1eb7 ceph: inode opera... |
934 |
int required_blob_size; |
604d1b024 ceph: take snap_r... |
935 |
bool lock_snap_rwsem = false; |
355da1eb7 ceph: inode opera... |
936 |
|
2cdeb1e47 ceph: Switch to g... |
937 938 |
if (ceph_snap(inode) != CEPH_NOSNAP) return -EROFS; |
355da1eb7 ceph: inode opera... |
939 |
|
06476a69d ceph: pass inode ... |
940 941 942 |
vxattr = ceph_match_vxattr(inode, name); if (vxattr && vxattr->readonly) return -EOPNOTSUPP; |
355da1eb7 ceph: inode opera... |
943 |
|
3adf654dd ceph: pass unhand... |
944 945 946 |
/* pass any unhandled ceph.* xattrs through to the MDS */ if (!strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN)) goto do_sync_unlocked; |
355da1eb7 ceph: inode opera... |
947 948 |
/* preallocate memory for xattr name, value, index node */ err = -ENOMEM; |
61413c2f5 fs/ceph/xattr.c: ... |
949 |
newname = kmemdup(name, name_len + 1, GFP_NOFS); |
355da1eb7 ceph: inode opera... |
950 951 |
if (!newname) goto out; |
355da1eb7 ceph: inode opera... |
952 953 |
if (val_len) { |
b829c1954 ceph: don't null-... |
954 |
newval = kmemdup(value, val_len, GFP_NOFS); |
355da1eb7 ceph: inode opera... |
955 956 |
if (!newval) goto out; |
355da1eb7 ceph: inode opera... |
957 958 959 960 961 |
} xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS); if (!xattr) goto out; |
f66fd9f09 ceph: pre-allocat... |
962 963 964 |
prealloc_cf = ceph_alloc_cap_flush(); if (!prealloc_cf) goto out; |
be655596b ceph: use i_ceph_... |
965 |
spin_lock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
966 967 |
retry: issued = __ceph_caps_issued(ci, NULL); |
508b32d86 ceph: request xat... |
968 |
if (ci->i_xattrs.version == 0 || !(issued & CEPH_CAP_XATTR_EXCL)) |
355da1eb7 ceph: inode opera... |
969 |
goto do_sync; |
604d1b024 ceph: take snap_r... |
970 971 972 973 974 975 976 977 978 979 980 981 982 |
if (!lock_snap_rwsem && !ci->i_head_snapc) { lock_snap_rwsem = true; if (!down_read_trylock(&mdsc->snap_rwsem)) { spin_unlock(&ci->i_ceph_lock); down_read(&mdsc->snap_rwsem); spin_lock(&ci->i_ceph_lock); goto retry; } } dout("setxattr %p issued %s ", inode, ceph_cap_string(issued)); |
355da1eb7 ceph: inode opera... |
983 984 985 986 987 988 |
__build_xattrs(inode); required_blob_size = __get_required_blob_size(ci, name_len, val_len); if (!ci->i_xattrs.prealloc_blob || required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) { |
18fa8b3fe ceph: make ceph_s... |
989 |
struct ceph_buffer *blob; |
355da1eb7 ceph: inode opera... |
990 |
|
be655596b ceph: use i_ceph_... |
991 |
spin_unlock(&ci->i_ceph_lock); |
355da1eb7 ceph: inode opera... |
992 993 |
dout(" preaallocating new blob size=%d ", required_blob_size); |
b6c1d5b81 ceph: simplify ce... |
994 |
blob = ceph_buffer_new(required_blob_size, GFP_NOFS); |
355da1eb7 ceph: inode opera... |
995 |
if (!blob) |
604d1b024 ceph: take snap_r... |
996 |
goto do_sync_unlocked; |
be655596b ceph: use i_ceph_... |
997 |
spin_lock(&ci->i_ceph_lock); |
b6c1d5b81 ceph: simplify ce... |
998 999 |
if (ci->i_xattrs.prealloc_blob) ceph_buffer_put(ci->i_xattrs.prealloc_blob); |
355da1eb7 ceph: inode opera... |
1000 1001 1002 |
ci->i_xattrs.prealloc_blob = blob; goto retry; } |
bcdfeb2eb ceph: remove xatt... |
1003 1004 |
err = __set_xattr(ci, newname, name_len, newval, val_len, flags, value ? 1 : -1, &xattr); |
18fa8b3fe ceph: make ceph_s... |
1005 |
|
fbc0b970d ceph: properly ha... |
1006 |
if (!err) { |
f66fd9f09 ceph: pre-allocat... |
1007 1008 |
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL, &prealloc_cf); |
fbc0b970d ceph: properly ha... |
1009 |
ci->i_xattrs.dirty = true; |
c2050a454 fs: Replace curre... |
1010 |
inode->i_ctime = current_time(inode); |
fbc0b970d ceph: properly ha... |
1011 |
} |
18fa8b3fe ceph: make ceph_s... |
1012 |
|
be655596b ceph: use i_ceph_... |
1013 |
spin_unlock(&ci->i_ceph_lock); |
604d1b024 ceph: take snap_r... |
1014 1015 |
if (lock_snap_rwsem) up_read(&mdsc->snap_rwsem); |
fca65b4ad ceph: do not call... |
1016 1017 |
if (dirty) __mark_inode_dirty(inode, dirty); |
f66fd9f09 ceph: pre-allocat... |
1018 |
ceph_free_cap_flush(prealloc_cf); |
355da1eb7 ceph: inode opera... |
1019 1020 1021 |
return err; do_sync: |
be655596b ceph: use i_ceph_... |
1022 |
spin_unlock(&ci->i_ceph_lock); |
3adf654dd ceph: pass unhand... |
1023 |
do_sync_unlocked: |
604d1b024 ceph: take snap_r... |
1024 1025 |
if (lock_snap_rwsem) up_read(&mdsc->snap_rwsem); |
315f24088 ceph: fix securit... |
1026 1027 1028 1029 1030 1031 1032 1033 |
/* security module set xattr while filling trace */ if (current->journal_info != NULL) { pr_warn_ratelimited("sync setxattr %p " "during filling trace ", inode); err = -EBUSY; } else { |
a26feccab ceph: Get rid of ... |
1034 |
err = ceph_sync_setxattr(inode, name, value, size, flags); |
315f24088 ceph: fix securit... |
1035 |
} |
355da1eb7 ceph: inode opera... |
1036 |
out: |
f66fd9f09 ceph: pre-allocat... |
1037 |
ceph_free_cap_flush(prealloc_cf); |
355da1eb7 ceph: inode opera... |
1038 1039 1040 1041 1042 |
kfree(newname); kfree(newval); kfree(xattr); return err; } |
2cdeb1e47 ceph: Switch to g... |
1043 1044 1045 |
static int ceph_get_xattr_handler(const struct xattr_handler *handler, struct dentry *dentry, struct inode *inode, const char *name, void *value, size_t size) |
7221fe4c2 ceph: add acl for... |
1046 |
{ |
2cdeb1e47 ceph: Switch to g... |
1047 1048 1049 1050 |
if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; return __ceph_getxattr(inode, name, value, size); } |
7221fe4c2 ceph: add acl for... |
1051 |
|
2cdeb1e47 ceph: Switch to g... |
1052 |
static int ceph_set_xattr_handler(const struct xattr_handler *handler, |
593012268 switch xattr_hand... |
1053 1054 1055 |
struct dentry *unused, struct inode *inode, const char *name, const void *value, size_t size, int flags) |
2cdeb1e47 ceph: Switch to g... |
1056 1057 1058 |
{ if (!ceph_is_valid_xattr(name)) return -EOPNOTSUPP; |
593012268 switch xattr_hand... |
1059 |
return __ceph_setxattr(inode, name, value, size, flags); |
7221fe4c2 ceph: add acl for... |
1060 |
} |
315f24088 ceph: fix securit... |
1061 |
|
5130ccea7 ceph: fix non sta... |
1062 |
static const struct xattr_handler ceph_other_xattr_handler = { |
2cdeb1e47 ceph: Switch to g... |
1063 1064 1065 1066 |
.prefix = "", /* match any name => handlers called with full name */ .get = ceph_get_xattr_handler, .set = ceph_set_xattr_handler, }; |
315f24088 ceph: fix securit... |
1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 |
#ifdef CONFIG_SECURITY bool ceph_security_xattr_wanted(struct inode *in) { return in->i_security != NULL; } bool ceph_security_xattr_deadlock(struct inode *in) { struct ceph_inode_info *ci; bool ret; if (in->i_security == NULL) return false; ci = ceph_inode(in); spin_lock(&ci->i_ceph_lock); ret = !(ci->i_ceph_flags & CEPH_I_SEC_INITED) && !(ci->i_xattrs.version > 0 && __ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 0)); spin_unlock(&ci->i_ceph_lock); return ret; } #endif |