13d14c5d2SYehuda Sadeh #include <linux/ceph/ceph_debug.h> 23d14c5d2SYehuda Sadeh 3355da1ebSSage Weil #include "super.h" 43d14c5d2SYehuda Sadeh #include "mds_client.h" 53d14c5d2SYehuda Sadeh 63d14c5d2SYehuda Sadeh #include <linux/ceph/decode.h> 7355da1ebSSage Weil 8355da1ebSSage Weil #include <linux/xattr.h> 95a0e3ad6STejun Heo #include <linux/slab.h> 10355da1ebSSage Weil 11355da1ebSSage Weil static bool ceph_is_valid_xattr(const char *name) 12355da1ebSSage Weil { 131a756278SSage Weil return !strncmp(name, "ceph.", 5) || 141a756278SSage Weil !strncmp(name, XATTR_SECURITY_PREFIX, 15355da1ebSSage Weil XATTR_SECURITY_PREFIX_LEN) || 16355da1ebSSage Weil !strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) || 17355da1ebSSage Weil !strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); 18355da1ebSSage Weil } 19355da1ebSSage Weil 20355da1ebSSage Weil /* 21355da1ebSSage Weil * These define virtual xattrs exposing the recursive directory 22355da1ebSSage Weil * statistics and layout metadata. 23355da1ebSSage Weil */ 24355da1ebSSage Weil struct ceph_vxattr_cb { 25355da1ebSSage Weil bool readonly; 26355da1ebSSage Weil char *name; 27355da1ebSSage Weil size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val, 28355da1ebSSage Weil size_t size); 29355da1ebSSage Weil }; 30355da1ebSSage Weil 31355da1ebSSage Weil /* directories */ 32355da1ebSSage Weil 33355da1ebSSage Weil static size_t ceph_vxattrcb_entries(struct ceph_inode_info *ci, char *val, 34355da1ebSSage Weil size_t size) 35355da1ebSSage Weil { 36355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_files + ci->i_subdirs); 37355da1ebSSage Weil } 38355da1ebSSage Weil 39355da1ebSSage Weil static size_t ceph_vxattrcb_files(struct ceph_inode_info *ci, char *val, 40355da1ebSSage Weil size_t size) 41355da1ebSSage Weil { 42355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_files); 43355da1ebSSage Weil } 44355da1ebSSage Weil 45355da1ebSSage Weil static size_t ceph_vxattrcb_subdirs(struct ceph_inode_info *ci, char *val, 46355da1ebSSage Weil size_t size) 47355da1ebSSage Weil { 48355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_subdirs); 49355da1ebSSage Weil } 50355da1ebSSage Weil 51355da1ebSSage Weil static size_t ceph_vxattrcb_rentries(struct ceph_inode_info *ci, char *val, 52355da1ebSSage Weil size_t size) 53355da1ebSSage Weil { 54355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_rfiles + ci->i_rsubdirs); 55355da1ebSSage Weil } 56355da1ebSSage Weil 57355da1ebSSage Weil static size_t ceph_vxattrcb_rfiles(struct ceph_inode_info *ci, char *val, 58355da1ebSSage Weil size_t size) 59355da1ebSSage Weil { 60355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_rfiles); 61355da1ebSSage Weil } 62355da1ebSSage Weil 63355da1ebSSage Weil static size_t ceph_vxattrcb_rsubdirs(struct ceph_inode_info *ci, char *val, 64355da1ebSSage Weil size_t size) 65355da1ebSSage Weil { 66355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_rsubdirs); 67355da1ebSSage Weil } 68355da1ebSSage Weil 69355da1ebSSage Weil static size_t ceph_vxattrcb_rbytes(struct ceph_inode_info *ci, char *val, 70355da1ebSSage Weil size_t size) 71355da1ebSSage Weil { 72355da1ebSSage Weil return snprintf(val, size, "%lld", ci->i_rbytes); 73355da1ebSSage Weil } 74355da1ebSSage Weil 75355da1ebSSage Weil static size_t ceph_vxattrcb_rctime(struct ceph_inode_info *ci, char *val, 76355da1ebSSage Weil size_t size) 77355da1ebSSage Weil { 78355da1ebSSage Weil return snprintf(val, size, "%ld.%ld", (long)ci->i_rctime.tv_sec, 79355da1ebSSage Weil (long)ci->i_rctime.tv_nsec); 80355da1ebSSage Weil } 81355da1ebSSage Weil 82355da1ebSSage Weil static struct ceph_vxattr_cb ceph_dir_vxattrs[] = { 831a756278SSage Weil { true, "ceph.dir.entries", ceph_vxattrcb_entries}, 841a756278SSage Weil { true, "ceph.dir.files", ceph_vxattrcb_files}, 851a756278SSage Weil { true, "ceph.dir.subdirs", ceph_vxattrcb_subdirs}, 861a756278SSage Weil { true, "ceph.dir.rentries", ceph_vxattrcb_rentries}, 871a756278SSage Weil { true, "ceph.dir.rfiles", ceph_vxattrcb_rfiles}, 881a756278SSage Weil { true, "ceph.dir.rsubdirs", ceph_vxattrcb_rsubdirs}, 891a756278SSage Weil { true, "ceph.dir.rbytes", ceph_vxattrcb_rbytes}, 901a756278SSage Weil { true, "ceph.dir.rctime", ceph_vxattrcb_rctime}, 91355da1ebSSage Weil { true, NULL, NULL } 92355da1ebSSage Weil }; 93355da1ebSSage Weil 94355da1ebSSage Weil /* files */ 95355da1ebSSage Weil 96355da1ebSSage Weil static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, 97355da1ebSSage Weil size_t size) 98355da1ebSSage Weil { 99b195befdSSage Weil int ret; 100b195befdSSage Weil 101b195befdSSage Weil ret = snprintf(val, size, 102355da1ebSSage Weil "chunk_bytes=%lld\nstripe_count=%lld\nobject_size=%lld\n", 103355da1ebSSage Weil (unsigned long long)ceph_file_layout_su(ci->i_layout), 104355da1ebSSage Weil (unsigned long long)ceph_file_layout_stripe_count(ci->i_layout), 105355da1ebSSage Weil (unsigned long long)ceph_file_layout_object_size(ci->i_layout)); 106b195befdSSage Weil if (ceph_file_layout_pg_preferred(ci->i_layout)) 107b195befdSSage Weil ret += snprintf(val + ret, size, "preferred_osd=%lld\n", 108b195befdSSage Weil (unsigned long long)ceph_file_layout_pg_preferred( 109b195befdSSage Weil ci->i_layout)); 110b195befdSSage Weil return ret; 111355da1ebSSage Weil } 112355da1ebSSage Weil 113355da1ebSSage Weil static struct ceph_vxattr_cb ceph_file_vxattrs[] = { 1141a756278SSage Weil { true, "ceph.layout", ceph_vxattrcb_layout}, 115355da1ebSSage Weil { NULL, NULL } 116355da1ebSSage Weil }; 117355da1ebSSage Weil 118355da1ebSSage Weil static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode) 119355da1ebSSage Weil { 120355da1ebSSage Weil if (S_ISDIR(inode->i_mode)) 121355da1ebSSage Weil return ceph_dir_vxattrs; 122355da1ebSSage Weil else if (S_ISREG(inode->i_mode)) 123355da1ebSSage Weil return ceph_file_vxattrs; 124355da1ebSSage Weil return NULL; 125355da1ebSSage Weil } 126355da1ebSSage Weil 127355da1ebSSage Weil static struct ceph_vxattr_cb *ceph_match_vxattr(struct ceph_vxattr_cb *vxattr, 128355da1ebSSage Weil const char *name) 129355da1ebSSage Weil { 130355da1ebSSage Weil do { 131355da1ebSSage Weil if (strcmp(vxattr->name, name) == 0) 132355da1ebSSage Weil return vxattr; 133355da1ebSSage Weil vxattr++; 134355da1ebSSage Weil } while (vxattr->name); 135355da1ebSSage Weil return NULL; 136355da1ebSSage Weil } 137355da1ebSSage Weil 138355da1ebSSage Weil static int __set_xattr(struct ceph_inode_info *ci, 139355da1ebSSage Weil const char *name, int name_len, 140355da1ebSSage Weil const char *val, int val_len, 141355da1ebSSage Weil int dirty, 142355da1ebSSage Weil int should_free_name, int should_free_val, 143355da1ebSSage Weil struct ceph_inode_xattr **newxattr) 144355da1ebSSage Weil { 145355da1ebSSage Weil struct rb_node **p; 146355da1ebSSage Weil struct rb_node *parent = NULL; 147355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 148355da1ebSSage Weil int c; 149355da1ebSSage Weil int new = 0; 150355da1ebSSage Weil 151355da1ebSSage Weil p = &ci->i_xattrs.index.rb_node; 152355da1ebSSage Weil while (*p) { 153355da1ebSSage Weil parent = *p; 154355da1ebSSage Weil xattr = rb_entry(parent, struct ceph_inode_xattr, node); 155355da1ebSSage Weil c = strncmp(name, xattr->name, min(name_len, xattr->name_len)); 156355da1ebSSage Weil if (c < 0) 157355da1ebSSage Weil p = &(*p)->rb_left; 158355da1ebSSage Weil else if (c > 0) 159355da1ebSSage Weil p = &(*p)->rb_right; 160355da1ebSSage Weil else { 161355da1ebSSage Weil if (name_len == xattr->name_len) 162355da1ebSSage Weil break; 163355da1ebSSage Weil else if (name_len < xattr->name_len) 164355da1ebSSage Weil p = &(*p)->rb_left; 165355da1ebSSage Weil else 166355da1ebSSage Weil p = &(*p)->rb_right; 167355da1ebSSage Weil } 168355da1ebSSage Weil xattr = NULL; 169355da1ebSSage Weil } 170355da1ebSSage Weil 171355da1ebSSage Weil if (!xattr) { 172355da1ebSSage Weil new = 1; 173355da1ebSSage Weil xattr = *newxattr; 174355da1ebSSage Weil xattr->name = name; 175355da1ebSSage Weil xattr->name_len = name_len; 176355da1ebSSage Weil xattr->should_free_name = should_free_name; 177355da1ebSSage Weil 178355da1ebSSage Weil ci->i_xattrs.count++; 179355da1ebSSage Weil dout("__set_xattr count=%d\n", ci->i_xattrs.count); 180355da1ebSSage Weil } else { 181355da1ebSSage Weil kfree(*newxattr); 182355da1ebSSage Weil *newxattr = NULL; 183355da1ebSSage Weil if (xattr->should_free_val) 184355da1ebSSage Weil kfree((void *)xattr->val); 185355da1ebSSage Weil 186355da1ebSSage Weil if (should_free_name) { 187355da1ebSSage Weil kfree((void *)name); 188355da1ebSSage Weil name = xattr->name; 189355da1ebSSage Weil } 190355da1ebSSage Weil ci->i_xattrs.names_size -= xattr->name_len; 191355da1ebSSage Weil ci->i_xattrs.vals_size -= xattr->val_len; 192355da1ebSSage Weil } 193355da1ebSSage Weil ci->i_xattrs.names_size += name_len; 194355da1ebSSage Weil ci->i_xattrs.vals_size += val_len; 195355da1ebSSage Weil if (val) 196355da1ebSSage Weil xattr->val = val; 197355da1ebSSage Weil else 198355da1ebSSage Weil xattr->val = ""; 199355da1ebSSage Weil 200355da1ebSSage Weil xattr->val_len = val_len; 201355da1ebSSage Weil xattr->dirty = dirty; 202355da1ebSSage Weil xattr->should_free_val = (val && should_free_val); 203355da1ebSSage Weil 204355da1ebSSage Weil if (new) { 205355da1ebSSage Weil rb_link_node(&xattr->node, parent, p); 206355da1ebSSage Weil rb_insert_color(&xattr->node, &ci->i_xattrs.index); 207355da1ebSSage Weil dout("__set_xattr_val p=%p\n", p); 208355da1ebSSage Weil } 209355da1ebSSage Weil 210355da1ebSSage Weil dout("__set_xattr_val added %llx.%llx xattr %p %s=%.*s\n", 211355da1ebSSage Weil ceph_vinop(&ci->vfs_inode), xattr, name, val_len, val); 212355da1ebSSage Weil 213355da1ebSSage Weil return 0; 214355da1ebSSage Weil } 215355da1ebSSage Weil 216355da1ebSSage Weil static struct ceph_inode_xattr *__get_xattr(struct ceph_inode_info *ci, 217355da1ebSSage Weil const char *name) 218355da1ebSSage Weil { 219355da1ebSSage Weil struct rb_node **p; 220355da1ebSSage Weil struct rb_node *parent = NULL; 221355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 22217db143fSSage Weil int name_len = strlen(name); 223355da1ebSSage Weil int c; 224355da1ebSSage Weil 225355da1ebSSage Weil p = &ci->i_xattrs.index.rb_node; 226355da1ebSSage Weil while (*p) { 227355da1ebSSage Weil parent = *p; 228355da1ebSSage Weil xattr = rb_entry(parent, struct ceph_inode_xattr, node); 229355da1ebSSage Weil c = strncmp(name, xattr->name, xattr->name_len); 23017db143fSSage Weil if (c == 0 && name_len > xattr->name_len) 23117db143fSSage Weil c = 1; 232355da1ebSSage Weil if (c < 0) 233355da1ebSSage Weil p = &(*p)->rb_left; 234355da1ebSSage Weil else if (c > 0) 235355da1ebSSage Weil p = &(*p)->rb_right; 236355da1ebSSage Weil else { 237355da1ebSSage Weil dout("__get_xattr %s: found %.*s\n", name, 238355da1ebSSage Weil xattr->val_len, xattr->val); 239355da1ebSSage Weil return xattr; 240355da1ebSSage Weil } 241355da1ebSSage Weil } 242355da1ebSSage Weil 243355da1ebSSage Weil dout("__get_xattr %s: not found\n", name); 244355da1ebSSage Weil 245355da1ebSSage Weil return NULL; 246355da1ebSSage Weil } 247355da1ebSSage Weil 248355da1ebSSage Weil static void __free_xattr(struct ceph_inode_xattr *xattr) 249355da1ebSSage Weil { 250355da1ebSSage Weil BUG_ON(!xattr); 251355da1ebSSage Weil 252355da1ebSSage Weil if (xattr->should_free_name) 253355da1ebSSage Weil kfree((void *)xattr->name); 254355da1ebSSage Weil if (xattr->should_free_val) 255355da1ebSSage Weil kfree((void *)xattr->val); 256355da1ebSSage Weil 257355da1ebSSage Weil kfree(xattr); 258355da1ebSSage Weil } 259355da1ebSSage Weil 260355da1ebSSage Weil static int __remove_xattr(struct ceph_inode_info *ci, 261355da1ebSSage Weil struct ceph_inode_xattr *xattr) 262355da1ebSSage Weil { 263355da1ebSSage Weil if (!xattr) 264355da1ebSSage Weil return -EOPNOTSUPP; 265355da1ebSSage Weil 266355da1ebSSage Weil rb_erase(&xattr->node, &ci->i_xattrs.index); 267355da1ebSSage Weil 268355da1ebSSage Weil if (xattr->should_free_name) 269355da1ebSSage Weil kfree((void *)xattr->name); 270355da1ebSSage Weil if (xattr->should_free_val) 271355da1ebSSage Weil kfree((void *)xattr->val); 272355da1ebSSage Weil 273355da1ebSSage Weil ci->i_xattrs.names_size -= xattr->name_len; 274355da1ebSSage Weil ci->i_xattrs.vals_size -= xattr->val_len; 275355da1ebSSage Weil ci->i_xattrs.count--; 276355da1ebSSage Weil kfree(xattr); 277355da1ebSSage Weil 278355da1ebSSage Weil return 0; 279355da1ebSSage Weil } 280355da1ebSSage Weil 281355da1ebSSage Weil static int __remove_xattr_by_name(struct ceph_inode_info *ci, 282355da1ebSSage Weil const char *name) 283355da1ebSSage Weil { 284355da1ebSSage Weil struct rb_node **p; 285355da1ebSSage Weil struct ceph_inode_xattr *xattr; 286355da1ebSSage Weil int err; 287355da1ebSSage Weil 288355da1ebSSage Weil p = &ci->i_xattrs.index.rb_node; 289355da1ebSSage Weil xattr = __get_xattr(ci, name); 290355da1ebSSage Weil err = __remove_xattr(ci, xattr); 291355da1ebSSage Weil return err; 292355da1ebSSage Weil } 293355da1ebSSage Weil 294355da1ebSSage Weil static char *__copy_xattr_names(struct ceph_inode_info *ci, 295355da1ebSSage Weil char *dest) 296355da1ebSSage Weil { 297355da1ebSSage Weil struct rb_node *p; 298355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 299355da1ebSSage Weil 300355da1ebSSage Weil p = rb_first(&ci->i_xattrs.index); 301355da1ebSSage Weil dout("__copy_xattr_names count=%d\n", ci->i_xattrs.count); 302355da1ebSSage Weil 303355da1ebSSage Weil while (p) { 304355da1ebSSage Weil xattr = rb_entry(p, struct ceph_inode_xattr, node); 305355da1ebSSage Weil memcpy(dest, xattr->name, xattr->name_len); 306355da1ebSSage Weil dest[xattr->name_len] = '\0'; 307355da1ebSSage Weil 308355da1ebSSage Weil dout("dest=%s %p (%s) (%d/%d)\n", dest, xattr, xattr->name, 309355da1ebSSage Weil xattr->name_len, ci->i_xattrs.names_size); 310355da1ebSSage Weil 311355da1ebSSage Weil dest += xattr->name_len + 1; 312355da1ebSSage Weil p = rb_next(p); 313355da1ebSSage Weil } 314355da1ebSSage Weil 315355da1ebSSage Weil return dest; 316355da1ebSSage Weil } 317355da1ebSSage Weil 318355da1ebSSage Weil void __ceph_destroy_xattrs(struct ceph_inode_info *ci) 319355da1ebSSage Weil { 320355da1ebSSage Weil struct rb_node *p, *tmp; 321355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 322355da1ebSSage Weil 323355da1ebSSage Weil p = rb_first(&ci->i_xattrs.index); 324355da1ebSSage Weil 325355da1ebSSage Weil dout("__ceph_destroy_xattrs p=%p\n", p); 326355da1ebSSage Weil 327355da1ebSSage Weil while (p) { 328355da1ebSSage Weil xattr = rb_entry(p, struct ceph_inode_xattr, node); 329355da1ebSSage Weil tmp = p; 330355da1ebSSage Weil p = rb_next(tmp); 331355da1ebSSage Weil dout("__ceph_destroy_xattrs next p=%p (%.*s)\n", p, 332355da1ebSSage Weil xattr->name_len, xattr->name); 333355da1ebSSage Weil rb_erase(tmp, &ci->i_xattrs.index); 334355da1ebSSage Weil 335355da1ebSSage Weil __free_xattr(xattr); 336355da1ebSSage Weil } 337355da1ebSSage Weil 338355da1ebSSage Weil ci->i_xattrs.names_size = 0; 339355da1ebSSage Weil ci->i_xattrs.vals_size = 0; 340355da1ebSSage Weil ci->i_xattrs.index_version = 0; 341355da1ebSSage Weil ci->i_xattrs.count = 0; 342355da1ebSSage Weil ci->i_xattrs.index = RB_ROOT; 343355da1ebSSage Weil } 344355da1ebSSage Weil 345355da1ebSSage Weil static int __build_xattrs(struct inode *inode) 346cd84db6eSYehuda Sadeh __releases(inode->i_lock) 347cd84db6eSYehuda Sadeh __acquires(inode->i_lock) 348355da1ebSSage Weil { 349355da1ebSSage Weil u32 namelen; 350355da1ebSSage Weil u32 numattr = 0; 351355da1ebSSage Weil void *p, *end; 352355da1ebSSage Weil u32 len; 353355da1ebSSage Weil const char *name, *val; 354355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 355355da1ebSSage Weil int xattr_version; 356355da1ebSSage Weil struct ceph_inode_xattr **xattrs = NULL; 35763ff78b2SSage Weil int err = 0; 358355da1ebSSage Weil int i; 359355da1ebSSage Weil 360355da1ebSSage Weil dout("__build_xattrs() len=%d\n", 361355da1ebSSage Weil ci->i_xattrs.blob ? (int)ci->i_xattrs.blob->vec.iov_len : 0); 362355da1ebSSage Weil 363355da1ebSSage Weil if (ci->i_xattrs.index_version >= ci->i_xattrs.version) 364355da1ebSSage Weil return 0; /* already built */ 365355da1ebSSage Weil 366355da1ebSSage Weil __ceph_destroy_xattrs(ci); 367355da1ebSSage Weil 368355da1ebSSage Weil start: 369355da1ebSSage Weil /* updated internal xattr rb tree */ 370355da1ebSSage Weil if (ci->i_xattrs.blob && ci->i_xattrs.blob->vec.iov_len > 4) { 371355da1ebSSage Weil p = ci->i_xattrs.blob->vec.iov_base; 372355da1ebSSage Weil end = p + ci->i_xattrs.blob->vec.iov_len; 373355da1ebSSage Weil ceph_decode_32_safe(&p, end, numattr, bad); 374355da1ebSSage Weil xattr_version = ci->i_xattrs.version; 375355da1ebSSage Weil spin_unlock(&inode->i_lock); 376355da1ebSSage Weil 377355da1ebSSage Weil xattrs = kcalloc(numattr, sizeof(struct ceph_xattr *), 378355da1ebSSage Weil GFP_NOFS); 379355da1ebSSage Weil err = -ENOMEM; 380355da1ebSSage Weil if (!xattrs) 381355da1ebSSage Weil goto bad_lock; 382355da1ebSSage Weil memset(xattrs, 0, numattr*sizeof(struct ceph_xattr *)); 383355da1ebSSage Weil for (i = 0; i < numattr; i++) { 384355da1ebSSage Weil xattrs[i] = kmalloc(sizeof(struct ceph_inode_xattr), 385355da1ebSSage Weil GFP_NOFS); 386355da1ebSSage Weil if (!xattrs[i]) 387355da1ebSSage Weil goto bad_lock; 388355da1ebSSage Weil } 389355da1ebSSage Weil 390355da1ebSSage Weil spin_lock(&inode->i_lock); 391355da1ebSSage Weil if (ci->i_xattrs.version != xattr_version) { 392355da1ebSSage Weil /* lost a race, retry */ 393355da1ebSSage Weil for (i = 0; i < numattr; i++) 394355da1ebSSage Weil kfree(xattrs[i]); 395355da1ebSSage Weil kfree(xattrs); 396355da1ebSSage Weil goto start; 397355da1ebSSage Weil } 398355da1ebSSage Weil err = -EIO; 399355da1ebSSage Weil while (numattr--) { 400355da1ebSSage Weil ceph_decode_32_safe(&p, end, len, bad); 401355da1ebSSage Weil namelen = len; 402355da1ebSSage Weil name = p; 403355da1ebSSage Weil p += len; 404355da1ebSSage Weil ceph_decode_32_safe(&p, end, len, bad); 405355da1ebSSage Weil val = p; 406355da1ebSSage Weil p += len; 407355da1ebSSage Weil 408355da1ebSSage Weil err = __set_xattr(ci, name, namelen, val, len, 409355da1ebSSage Weil 0, 0, 0, &xattrs[numattr]); 410355da1ebSSage Weil 411355da1ebSSage Weil if (err < 0) 412355da1ebSSage Weil goto bad; 413355da1ebSSage Weil } 414355da1ebSSage Weil kfree(xattrs); 415355da1ebSSage Weil } 416355da1ebSSage Weil ci->i_xattrs.index_version = ci->i_xattrs.version; 417355da1ebSSage Weil ci->i_xattrs.dirty = false; 418355da1ebSSage Weil 419355da1ebSSage Weil return err; 420355da1ebSSage Weil bad_lock: 421355da1ebSSage Weil spin_lock(&inode->i_lock); 422355da1ebSSage Weil bad: 423355da1ebSSage Weil if (xattrs) { 424355da1ebSSage Weil for (i = 0; i < numattr; i++) 425355da1ebSSage Weil kfree(xattrs[i]); 426355da1ebSSage Weil kfree(xattrs); 427355da1ebSSage Weil } 428355da1ebSSage Weil ci->i_xattrs.names_size = 0; 429355da1ebSSage Weil return err; 430355da1ebSSage Weil } 431355da1ebSSage Weil 432355da1ebSSage Weil static int __get_required_blob_size(struct ceph_inode_info *ci, int name_size, 433355da1ebSSage Weil int val_size) 434355da1ebSSage Weil { 435355da1ebSSage Weil /* 436355da1ebSSage Weil * 4 bytes for the length, and additional 4 bytes per each xattr name, 437355da1ebSSage Weil * 4 bytes per each value 438355da1ebSSage Weil */ 439355da1ebSSage Weil int size = 4 + ci->i_xattrs.count*(4 + 4) + 440355da1ebSSage Weil ci->i_xattrs.names_size + 441355da1ebSSage Weil ci->i_xattrs.vals_size; 442355da1ebSSage Weil dout("__get_required_blob_size c=%d names.size=%d vals.size=%d\n", 443355da1ebSSage Weil ci->i_xattrs.count, ci->i_xattrs.names_size, 444355da1ebSSage Weil ci->i_xattrs.vals_size); 445355da1ebSSage Weil 446355da1ebSSage Weil if (name_size) 447355da1ebSSage Weil size += 4 + 4 + name_size + val_size; 448355da1ebSSage Weil 449355da1ebSSage Weil return size; 450355da1ebSSage Weil } 451355da1ebSSage Weil 452355da1ebSSage Weil /* 453355da1ebSSage Weil * If there are dirty xattrs, reencode xattrs into the prealloc_blob 454355da1ebSSage Weil * and swap into place. 455355da1ebSSage Weil */ 456355da1ebSSage Weil void __ceph_build_xattrs_blob(struct ceph_inode_info *ci) 457355da1ebSSage Weil { 458355da1ebSSage Weil struct rb_node *p; 459355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 460355da1ebSSage Weil void *dest; 461355da1ebSSage Weil 462355da1ebSSage Weil dout("__build_xattrs_blob %p\n", &ci->vfs_inode); 463355da1ebSSage Weil if (ci->i_xattrs.dirty) { 464355da1ebSSage Weil int need = __get_required_blob_size(ci, 0, 0); 465355da1ebSSage Weil 466355da1ebSSage Weil BUG_ON(need > ci->i_xattrs.prealloc_blob->alloc_len); 467355da1ebSSage Weil 468355da1ebSSage Weil p = rb_first(&ci->i_xattrs.index); 469355da1ebSSage Weil dest = ci->i_xattrs.prealloc_blob->vec.iov_base; 470355da1ebSSage Weil 471355da1ebSSage Weil ceph_encode_32(&dest, ci->i_xattrs.count); 472355da1ebSSage Weil while (p) { 473355da1ebSSage Weil xattr = rb_entry(p, struct ceph_inode_xattr, node); 474355da1ebSSage Weil 475355da1ebSSage Weil ceph_encode_32(&dest, xattr->name_len); 476355da1ebSSage Weil memcpy(dest, xattr->name, xattr->name_len); 477355da1ebSSage Weil dest += xattr->name_len; 478355da1ebSSage Weil ceph_encode_32(&dest, xattr->val_len); 479355da1ebSSage Weil memcpy(dest, xattr->val, xattr->val_len); 480355da1ebSSage Weil dest += xattr->val_len; 481355da1ebSSage Weil 482355da1ebSSage Weil p = rb_next(p); 483355da1ebSSage Weil } 484355da1ebSSage Weil 485355da1ebSSage Weil /* adjust buffer len; it may be larger than we need */ 486355da1ebSSage Weil ci->i_xattrs.prealloc_blob->vec.iov_len = 487355da1ebSSage Weil dest - ci->i_xattrs.prealloc_blob->vec.iov_base; 488355da1ebSSage Weil 489b6c1d5b8SSage Weil if (ci->i_xattrs.blob) 490355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.blob); 491355da1ebSSage Weil ci->i_xattrs.blob = ci->i_xattrs.prealloc_blob; 492355da1ebSSage Weil ci->i_xattrs.prealloc_blob = NULL; 493355da1ebSSage Weil ci->i_xattrs.dirty = false; 4944a625be4SSage Weil ci->i_xattrs.version++; 495355da1ebSSage Weil } 496355da1ebSSage Weil } 497355da1ebSSage Weil 498355da1ebSSage Weil ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value, 499355da1ebSSage Weil size_t size) 500355da1ebSSage Weil { 501355da1ebSSage Weil struct inode *inode = dentry->d_inode; 502355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 503355da1ebSSage Weil struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); 504355da1ebSSage Weil int err; 505355da1ebSSage Weil struct ceph_inode_xattr *xattr; 506355da1ebSSage Weil struct ceph_vxattr_cb *vxattr = NULL; 507355da1ebSSage Weil 508355da1ebSSage Weil if (!ceph_is_valid_xattr(name)) 509355da1ebSSage Weil return -ENODATA; 510355da1ebSSage Weil 511355da1ebSSage Weil /* let's see if a virtual xattr was requested */ 512355da1ebSSage Weil if (vxattrs) 513355da1ebSSage Weil vxattr = ceph_match_vxattr(vxattrs, name); 514355da1ebSSage Weil 515355da1ebSSage Weil spin_lock(&inode->i_lock); 516355da1ebSSage Weil dout("getxattr %p ver=%lld index_ver=%lld\n", inode, 517355da1ebSSage Weil ci->i_xattrs.version, ci->i_xattrs.index_version); 518355da1ebSSage Weil 519355da1ebSSage Weil if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1) && 520355da1ebSSage Weil (ci->i_xattrs.index_version >= ci->i_xattrs.version)) { 521355da1ebSSage Weil goto get_xattr; 522355da1ebSSage Weil } else { 523355da1ebSSage Weil spin_unlock(&inode->i_lock); 524355da1ebSSage Weil /* get xattrs from mds (if we don't already have them) */ 525355da1ebSSage Weil err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR); 526355da1ebSSage Weil if (err) 527355da1ebSSage Weil return err; 528355da1ebSSage Weil } 529355da1ebSSage Weil 530355da1ebSSage Weil spin_lock(&inode->i_lock); 531355da1ebSSage Weil 532355da1ebSSage Weil if (vxattr && vxattr->readonly) { 533355da1ebSSage Weil err = vxattr->getxattr_cb(ci, value, size); 534355da1ebSSage Weil goto out; 535355da1ebSSage Weil } 536355da1ebSSage Weil 537355da1ebSSage Weil err = __build_xattrs(inode); 538355da1ebSSage Weil if (err < 0) 539355da1ebSSage Weil goto out; 540355da1ebSSage Weil 541355da1ebSSage Weil get_xattr: 542355da1ebSSage Weil err = -ENODATA; /* == ENOATTR */ 543355da1ebSSage Weil xattr = __get_xattr(ci, name); 544355da1ebSSage Weil if (!xattr) { 545355da1ebSSage Weil if (vxattr) 546355da1ebSSage Weil err = vxattr->getxattr_cb(ci, value, size); 547355da1ebSSage Weil goto out; 548355da1ebSSage Weil } 549355da1ebSSage Weil 550355da1ebSSage Weil err = -ERANGE; 551355da1ebSSage Weil if (size && size < xattr->val_len) 552355da1ebSSage Weil goto out; 553355da1ebSSage Weil 554355da1ebSSage Weil err = xattr->val_len; 555355da1ebSSage Weil if (size == 0) 556355da1ebSSage Weil goto out; 557355da1ebSSage Weil 558355da1ebSSage Weil memcpy(value, xattr->val, xattr->val_len); 559355da1ebSSage Weil 560355da1ebSSage Weil out: 561355da1ebSSage Weil spin_unlock(&inode->i_lock); 562355da1ebSSage Weil return err; 563355da1ebSSage Weil } 564355da1ebSSage Weil 565355da1ebSSage Weil ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size) 566355da1ebSSage Weil { 567355da1ebSSage Weil struct inode *inode = dentry->d_inode; 568355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 569355da1ebSSage Weil struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); 570355da1ebSSage Weil u32 vir_namelen = 0; 571355da1ebSSage Weil u32 namelen; 572355da1ebSSage Weil int err; 573355da1ebSSage Weil u32 len; 574355da1ebSSage Weil int i; 575355da1ebSSage Weil 576355da1ebSSage Weil spin_lock(&inode->i_lock); 577355da1ebSSage Weil dout("listxattr %p ver=%lld index_ver=%lld\n", inode, 578355da1ebSSage Weil ci->i_xattrs.version, ci->i_xattrs.index_version); 579355da1ebSSage Weil 580355da1ebSSage Weil if (__ceph_caps_issued_mask(ci, CEPH_CAP_XATTR_SHARED, 1) && 581bddfa3ccSHenry C Chang (ci->i_xattrs.index_version >= ci->i_xattrs.version)) { 582355da1ebSSage Weil goto list_xattr; 583355da1ebSSage Weil } else { 584355da1ebSSage Weil spin_unlock(&inode->i_lock); 585355da1ebSSage Weil err = ceph_do_getattr(inode, CEPH_STAT_CAP_XATTR); 586355da1ebSSage Weil if (err) 587355da1ebSSage Weil return err; 588355da1ebSSage Weil } 589355da1ebSSage Weil 590355da1ebSSage Weil spin_lock(&inode->i_lock); 591355da1ebSSage Weil 592355da1ebSSage Weil err = __build_xattrs(inode); 593355da1ebSSage Weil if (err < 0) 594355da1ebSSage Weil goto out; 595355da1ebSSage Weil 596355da1ebSSage Weil list_xattr: 597355da1ebSSage Weil vir_namelen = 0; 598355da1ebSSage Weil /* include virtual dir xattrs */ 599355da1ebSSage Weil if (vxattrs) 600355da1ebSSage Weil for (i = 0; vxattrs[i].name; i++) 601355da1ebSSage Weil vir_namelen += strlen(vxattrs[i].name) + 1; 602355da1ebSSage Weil /* adding 1 byte per each variable due to the null termination */ 603355da1ebSSage Weil namelen = vir_namelen + ci->i_xattrs.names_size + ci->i_xattrs.count; 604355da1ebSSage Weil err = -ERANGE; 605355da1ebSSage Weil if (size && namelen > size) 606355da1ebSSage Weil goto out; 607355da1ebSSage Weil 608355da1ebSSage Weil err = namelen; 609355da1ebSSage Weil if (size == 0) 610355da1ebSSage Weil goto out; 611355da1ebSSage Weil 612355da1ebSSage Weil names = __copy_xattr_names(ci, names); 613355da1ebSSage Weil 614355da1ebSSage Weil /* virtual xattr names, too */ 615355da1ebSSage Weil if (vxattrs) 616355da1ebSSage Weil for (i = 0; vxattrs[i].name; i++) { 617355da1ebSSage Weil len = sprintf(names, "%s", vxattrs[i].name); 618355da1ebSSage Weil names += len + 1; 619355da1ebSSage Weil } 620355da1ebSSage Weil 621355da1ebSSage Weil out: 622355da1ebSSage Weil spin_unlock(&inode->i_lock); 623355da1ebSSage Weil return err; 624355da1ebSSage Weil } 625355da1ebSSage Weil 626355da1ebSSage Weil static int ceph_sync_setxattr(struct dentry *dentry, const char *name, 627355da1ebSSage Weil const char *value, size_t size, int flags) 628355da1ebSSage Weil { 6293d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); 630355da1ebSSage Weil struct inode *inode = dentry->d_inode; 631355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 632*5f21c96dSSage Weil struct inode *parent_inode; 633355da1ebSSage Weil struct ceph_mds_request *req; 6343d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 635355da1ebSSage Weil int err; 636355da1ebSSage Weil int i, nr_pages; 637355da1ebSSage Weil struct page **pages = NULL; 638355da1ebSSage Weil void *kaddr; 639355da1ebSSage Weil 640355da1ebSSage Weil /* copy value into some pages */ 641355da1ebSSage Weil nr_pages = calc_pages_for(0, size); 642355da1ebSSage Weil if (nr_pages) { 643355da1ebSSage Weil pages = kmalloc(sizeof(pages[0])*nr_pages, GFP_NOFS); 644355da1ebSSage Weil if (!pages) 645355da1ebSSage Weil return -ENOMEM; 646355da1ebSSage Weil err = -ENOMEM; 647355da1ebSSage Weil for (i = 0; i < nr_pages; i++) { 64831459fe4SYehuda Sadeh pages[i] = __page_cache_alloc(GFP_NOFS); 649355da1ebSSage Weil if (!pages[i]) { 650355da1ebSSage Weil nr_pages = i; 651355da1ebSSage Weil goto out; 652355da1ebSSage Weil } 653355da1ebSSage Weil kaddr = kmap(pages[i]); 654355da1ebSSage Weil memcpy(kaddr, value + i*PAGE_CACHE_SIZE, 655355da1ebSSage Weil min(PAGE_CACHE_SIZE, size-i*PAGE_CACHE_SIZE)); 656355da1ebSSage Weil } 657355da1ebSSage Weil } 658355da1ebSSage Weil 659355da1ebSSage Weil dout("setxattr value=%.*s\n", (int)size, value); 660355da1ebSSage Weil 661355da1ebSSage Weil /* do request */ 662355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETXATTR, 663355da1ebSSage Weil USE_AUTH_MDS); 66460d87733SJulia Lawall if (IS_ERR(req)) { 66560d87733SJulia Lawall err = PTR_ERR(req); 66660d87733SJulia Lawall goto out; 66760d87733SJulia Lawall } 66870b666c3SSage Weil req->r_inode = inode; 66970b666c3SSage Weil ihold(inode); 670355da1ebSSage Weil req->r_inode_drop = CEPH_CAP_XATTR_SHARED; 671355da1ebSSage Weil req->r_num_caps = 1; 672355da1ebSSage Weil req->r_args.setxattr.flags = cpu_to_le32(flags); 673355da1ebSSage Weil req->r_path2 = kstrdup(name, GFP_NOFS); 674355da1ebSSage Weil 675355da1ebSSage Weil req->r_pages = pages; 676355da1ebSSage Weil req->r_num_pages = nr_pages; 677355da1ebSSage Weil req->r_data_len = size; 678355da1ebSSage Weil 679355da1ebSSage Weil dout("xattr.ver (before): %lld\n", ci->i_xattrs.version); 680*5f21c96dSSage Weil parent_inode = ceph_get_dentry_parent_inode(dentry); 681355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, parent_inode, req); 682*5f21c96dSSage Weil iput(parent_inode); 683355da1ebSSage Weil ceph_mdsc_put_request(req); 684355da1ebSSage Weil dout("xattr.ver (after): %lld\n", ci->i_xattrs.version); 685355da1ebSSage Weil 686355da1ebSSage Weil out: 687355da1ebSSage Weil if (pages) { 688355da1ebSSage Weil for (i = 0; i < nr_pages; i++) 689355da1ebSSage Weil __free_page(pages[i]); 690355da1ebSSage Weil kfree(pages); 691355da1ebSSage Weil } 692355da1ebSSage Weil return err; 693355da1ebSSage Weil } 694355da1ebSSage Weil 695355da1ebSSage Weil int ceph_setxattr(struct dentry *dentry, const char *name, 696355da1ebSSage Weil const void *value, size_t size, int flags) 697355da1ebSSage Weil { 698355da1ebSSage Weil struct inode *inode = dentry->d_inode; 699355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 700355da1ebSSage Weil struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); 701355da1ebSSage Weil int err; 702355da1ebSSage Weil int name_len = strlen(name); 703355da1ebSSage Weil int val_len = size; 704355da1ebSSage Weil char *newname = NULL; 705355da1ebSSage Weil char *newval = NULL; 706355da1ebSSage Weil struct ceph_inode_xattr *xattr = NULL; 707355da1ebSSage Weil int issued; 708355da1ebSSage Weil int required_blob_size; 709fca65b4aSSage Weil int dirty; 710355da1ebSSage Weil 711355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 712355da1ebSSage Weil return -EROFS; 713355da1ebSSage Weil 714355da1ebSSage Weil if (!ceph_is_valid_xattr(name)) 715355da1ebSSage Weil return -EOPNOTSUPP; 716355da1ebSSage Weil 717355da1ebSSage Weil if (vxattrs) { 718355da1ebSSage Weil struct ceph_vxattr_cb *vxattr = 719355da1ebSSage Weil ceph_match_vxattr(vxattrs, name); 720355da1ebSSage Weil if (vxattr && vxattr->readonly) 721355da1ebSSage Weil return -EOPNOTSUPP; 722355da1ebSSage Weil } 723355da1ebSSage Weil 724355da1ebSSage Weil /* preallocate memory for xattr name, value, index node */ 725355da1ebSSage Weil err = -ENOMEM; 72661413c2fSJulia Lawall newname = kmemdup(name, name_len + 1, GFP_NOFS); 727355da1ebSSage Weil if (!newname) 728355da1ebSSage Weil goto out; 729355da1ebSSage Weil 730355da1ebSSage Weil if (val_len) { 731355da1ebSSage Weil newval = kmalloc(val_len + 1, GFP_NOFS); 732355da1ebSSage Weil if (!newval) 733355da1ebSSage Weil goto out; 734355da1ebSSage Weil memcpy(newval, value, val_len); 735355da1ebSSage Weil newval[val_len] = '\0'; 736355da1ebSSage Weil } 737355da1ebSSage Weil 738355da1ebSSage Weil xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS); 739355da1ebSSage Weil if (!xattr) 740355da1ebSSage Weil goto out; 741355da1ebSSage Weil 742355da1ebSSage Weil spin_lock(&inode->i_lock); 743355da1ebSSage Weil retry: 744355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 745355da1ebSSage Weil if (!(issued & CEPH_CAP_XATTR_EXCL)) 746355da1ebSSage Weil goto do_sync; 747355da1ebSSage Weil __build_xattrs(inode); 748355da1ebSSage Weil 749355da1ebSSage Weil required_blob_size = __get_required_blob_size(ci, name_len, val_len); 750355da1ebSSage Weil 751355da1ebSSage Weil if (!ci->i_xattrs.prealloc_blob || 752355da1ebSSage Weil required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) { 753355da1ebSSage Weil struct ceph_buffer *blob = NULL; 754355da1ebSSage Weil 755355da1ebSSage Weil spin_unlock(&inode->i_lock); 756355da1ebSSage Weil dout(" preaallocating new blob size=%d\n", required_blob_size); 757b6c1d5b8SSage Weil blob = ceph_buffer_new(required_blob_size, GFP_NOFS); 758355da1ebSSage Weil if (!blob) 759355da1ebSSage Weil goto out; 760355da1ebSSage Weil spin_lock(&inode->i_lock); 761b6c1d5b8SSage Weil if (ci->i_xattrs.prealloc_blob) 762355da1ebSSage Weil ceph_buffer_put(ci->i_xattrs.prealloc_blob); 763355da1ebSSage Weil ci->i_xattrs.prealloc_blob = blob; 764355da1ebSSage Weil goto retry; 765355da1ebSSage Weil } 766355da1ebSSage Weil 767355da1ebSSage Weil dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued)); 768355da1ebSSage Weil err = __set_xattr(ci, newname, name_len, newval, 769355da1ebSSage Weil val_len, 1, 1, 1, &xattr); 770fca65b4aSSage Weil dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); 771355da1ebSSage Weil ci->i_xattrs.dirty = true; 772355da1ebSSage Weil inode->i_ctime = CURRENT_TIME; 773355da1ebSSage Weil spin_unlock(&inode->i_lock); 774fca65b4aSSage Weil if (dirty) 775fca65b4aSSage Weil __mark_inode_dirty(inode, dirty); 776355da1ebSSage Weil return err; 777355da1ebSSage Weil 778355da1ebSSage Weil do_sync: 779355da1ebSSage Weil spin_unlock(&inode->i_lock); 780355da1ebSSage Weil err = ceph_sync_setxattr(dentry, name, value, size, flags); 781355da1ebSSage Weil out: 782355da1ebSSage Weil kfree(newname); 783355da1ebSSage Weil kfree(newval); 784355da1ebSSage Weil kfree(xattr); 785355da1ebSSage Weil return err; 786355da1ebSSage Weil } 787355da1ebSSage Weil 788355da1ebSSage Weil static int ceph_send_removexattr(struct dentry *dentry, const char *name) 789355da1ebSSage Weil { 7903d14c5d2SYehuda Sadeh struct ceph_fs_client *fsc = ceph_sb_to_client(dentry->d_sb); 7913d14c5d2SYehuda Sadeh struct ceph_mds_client *mdsc = fsc->mdsc; 792355da1ebSSage Weil struct inode *inode = dentry->d_inode; 793*5f21c96dSSage Weil struct inode *parent_inode; 794355da1ebSSage Weil struct ceph_mds_request *req; 795355da1ebSSage Weil int err; 796355da1ebSSage Weil 797355da1ebSSage Weil req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_RMXATTR, 798355da1ebSSage Weil USE_AUTH_MDS); 799355da1ebSSage Weil if (IS_ERR(req)) 800355da1ebSSage Weil return PTR_ERR(req); 80170b666c3SSage Weil req->r_inode = inode; 80270b666c3SSage Weil ihold(inode); 803355da1ebSSage Weil req->r_inode_drop = CEPH_CAP_XATTR_SHARED; 804355da1ebSSage Weil req->r_num_caps = 1; 805355da1ebSSage Weil req->r_path2 = kstrdup(name, GFP_NOFS); 806355da1ebSSage Weil 807*5f21c96dSSage Weil parent_inode = ceph_get_dentry_parent_inode(dentry); 808355da1ebSSage Weil err = ceph_mdsc_do_request(mdsc, parent_inode, req); 809*5f21c96dSSage Weil iput(parent_inode); 810355da1ebSSage Weil ceph_mdsc_put_request(req); 811355da1ebSSage Weil return err; 812355da1ebSSage Weil } 813355da1ebSSage Weil 814355da1ebSSage Weil int ceph_removexattr(struct dentry *dentry, const char *name) 815355da1ebSSage Weil { 816355da1ebSSage Weil struct inode *inode = dentry->d_inode; 817355da1ebSSage Weil struct ceph_inode_info *ci = ceph_inode(inode); 818355da1ebSSage Weil struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode); 819355da1ebSSage Weil int issued; 820355da1ebSSage Weil int err; 821fca65b4aSSage Weil int dirty; 822355da1ebSSage Weil 823355da1ebSSage Weil if (ceph_snap(inode) != CEPH_NOSNAP) 824355da1ebSSage Weil return -EROFS; 825355da1ebSSage Weil 826355da1ebSSage Weil if (!ceph_is_valid_xattr(name)) 827355da1ebSSage Weil return -EOPNOTSUPP; 828355da1ebSSage Weil 829355da1ebSSage Weil if (vxattrs) { 830355da1ebSSage Weil struct ceph_vxattr_cb *vxattr = 831355da1ebSSage Weil ceph_match_vxattr(vxattrs, name); 832355da1ebSSage Weil if (vxattr && vxattr->readonly) 833355da1ebSSage Weil return -EOPNOTSUPP; 834355da1ebSSage Weil } 835355da1ebSSage Weil 836355da1ebSSage Weil spin_lock(&inode->i_lock); 837355da1ebSSage Weil __build_xattrs(inode); 838355da1ebSSage Weil issued = __ceph_caps_issued(ci, NULL); 839355da1ebSSage Weil dout("removexattr %p issued %s\n", inode, ceph_cap_string(issued)); 840355da1ebSSage Weil 841355da1ebSSage Weil if (!(issued & CEPH_CAP_XATTR_EXCL)) 842355da1ebSSage Weil goto do_sync; 843355da1ebSSage Weil 844355da1ebSSage Weil err = __remove_xattr_by_name(ceph_inode(inode), name); 845fca65b4aSSage Weil dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL); 846355da1ebSSage Weil ci->i_xattrs.dirty = true; 847355da1ebSSage Weil inode->i_ctime = CURRENT_TIME; 848355da1ebSSage Weil 849355da1ebSSage Weil spin_unlock(&inode->i_lock); 850fca65b4aSSage Weil if (dirty) 851fca65b4aSSage Weil __mark_inode_dirty(inode, dirty); 852355da1ebSSage Weil return err; 853355da1ebSSage Weil do_sync: 854355da1ebSSage Weil spin_unlock(&inode->i_lock); 855355da1ebSSage Weil err = ceph_send_removexattr(dentry, name); 856355da1ebSSage Weil return err; 857355da1ebSSage Weil } 858355da1ebSSage Weil 859