return rc;
}
-ssize_t ll_getxattr(struct dentry *dentry, const char *name,
- void *buffer, size_t size)
+static ssize_t ll_getxattr_lov(struct inode *inode, void *buf, size_t buf_size)
{
- struct inode *inode = dentry->d_inode;
+ ssize_t rc;
- LASSERT(inode);
- LASSERT(name);
+ if (S_ISREG(inode->i_mode)) {
+ struct cl_object *obj = ll_i2info(inode)->lli_clob;
+ struct lu_env *env;
+ struct cl_layout cl = {
+ .cl_buf.lb_buf = buf,
+ .cl_buf.lb_len = buf_size,
+ };
+ int refcheck;
+
+ if (obj == NULL)
+ RETURN(-ENODATA);
+
+ env = cl_env_get(&refcheck);
+ if (IS_ERR(env))
+ RETURN(PTR_ERR(env));
+
+ rc = cl_object_layout_get(env, obj, &cl);
+ if (rc < 0)
+ GOTO(out_env, rc);
- CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), xattr %s\n",
- PFID(ll_inode2fid(inode)), inode, name);
+ if (cl.cl_size == 0)
+ GOTO(out_env, rc = -ENODATA);
- ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1);
+ rc = cl.cl_size;
- if ((strncmp(name, XATTR_TRUSTED_PREFIX,
- sizeof(XATTR_TRUSTED_PREFIX) - 1) == 0 &&
- strcmp(name + sizeof(XATTR_TRUSTED_PREFIX) - 1, "lov") == 0) ||
- (strncmp(name, XATTR_LUSTRE_PREFIX,
- sizeof(XATTR_LUSTRE_PREFIX) - 1) == 0 &&
- strcmp(name + sizeof(XATTR_LUSTRE_PREFIX) - 1, "lov") == 0)) {
- struct lov_stripe_md *lsm;
- struct lov_user_md *lump;
- struct lov_mds_md *lmm = NULL;
- struct ptlrpc_request *request = NULL;
- int rc = 0, lmmsize = 0;
-
- if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
- return -ENODATA;
-
- lsm = ccc_inode_lsm_get(inode);
- if (lsm == NULL) {
- if (S_ISDIR(inode->i_mode)) {
- rc = ll_dir_getstripe(inode, (void **)&lmm,
- &lmmsize, &request, 0);
- } else {
- rc = -ENODATA;
- }
- } else {
- /* LSM is present already after lookup/getattr call.
- * we need to grab layout lock once it is implemented */
- rc = obd_packmd(ll_i2dtexp(inode), &lmm, lsm);
- lmmsize = rc;
- }
- ccc_inode_lsm_put(inode, lsm);
-
- if (rc < 0)
- GOTO(out, rc);
-
- if (size == 0) {
- /* used to call ll_get_max_mdsize() forward to get
- * the maximum buffer size, while some apps (such as
- * rsync 3.0.x) care much about the exact xattr value
- * size */
- rc = lmmsize;
- GOTO(out, rc);
- }
+ if (buf_size == 0)
+ GOTO(out_env, rc);
- if (size < lmmsize) {
- CERROR("server bug: replied size %d > %d for %s (%s)\n",
- lmmsize, (int)size, dentry->d_name.name, name);
- GOTO(out, rc = -ERANGE);
- }
+ LASSERT(buf != NULL && rc <= buf_size);
- lump = (struct lov_user_md *)buffer;
- memcpy(lump, lmm, lmmsize);
- /* do not return layout gen for getxattr otherwise it would
- * confuse tar --xattr by recognizing layout gen as stripe
- * offset when the file is restored. See LU-2809. */
- lump->lmm_layout_gen = 0;
+ /* Do not return layout gen for getxattr() since
+ * otherwise it would confuse tar --xattr by
+ * recognizing layout gen as stripe offset when the
+ * file is restored. See LU-2809. */
+ ((struct lov_mds_md *)buf)->lmm_layout_gen = 0;
+out_env:
+ cl_env_put(env, &refcheck);
- rc = lmmsize;
-out:
- if (request)
- ptlrpc_req_finished(request);
- else if (lmm)
- obd_free_diskmd(ll_i2dtexp(inode), &lmm);
- return(rc);
- }
+ RETURN(rc);
+ } else if (S_ISDIR(inode->i_mode)) {
+ struct lov_mds_md *lmm = NULL;
+ int lmm_size = 0;
+ struct ptlrpc_request *req = NULL;
- return ll_getxattr_common(inode, name, buffer, size, OBD_MD_FLXATTR);
+ rc = ll_dir_getstripe(inode, (void **)&lmm, &lmm_size,
+ &req, 0);
+ if (rc < 0)
+ GOTO(out_req, rc);
+
+ if (buf_size == 0)
+ GOTO(out_req, rc = lmm_size);
+
+ if (buf_size < lmm_size)
+ GOTO(out_req, rc = -ERANGE);
+
+ memcpy(buf, lmm, lmm_size);
+ GOTO(out_req, rc = lmm_size);
+out_req:
+ if (req != NULL)
+ ptlrpc_req_finished(req);
+
+ return rc;
+ } else {
+ RETURN(-ENODATA);
+ }
}
-ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size)
+ssize_t ll_getxattr(struct dentry *dentry, const char *name, void *buf,
+ size_t buf_size)
{
- struct inode *inode = dentry->d_inode;
- int rc = 0, rc2 = 0;
- struct lov_mds_md *lmm = NULL;
- struct ptlrpc_request *request = NULL;
- int lmmsize;
+ struct inode *inode = dentry->d_inode;
- LASSERT(inode);
+ LASSERT(inode);
+ LASSERT(name);
+
+ CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), xattr %s\n",
+ PFID(ll_inode2fid(inode)), inode, name);
+
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1);
+
+ if (strcmp(name, XATTR_LUSTRE_LOV) == 0 ||
+ strcmp(name, XATTR_NAME_LOV) == 0)
+ return ll_getxattr_lov(inode, buf, buf_size);
+ else
+ return ll_getxattr_common(inode, name, buf, buf_size,
+ OBD_MD_FLXATTR);
+}
+
+ssize_t ll_listxattr(struct dentry *dentry, char *buf, size_t buf_size)
+{
+ struct inode *inode = dentry->d_inode;
+ struct ll_sb_info *sbi = ll_i2sbi(inode);
+ char *xattr_name;
+ ssize_t rc, rc2;
+ size_t len, rem;
CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
PFID(ll_inode2fid(inode)), inode);
- ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LISTXATTR, 1);
-
- rc = ll_getxattr_common(inode, NULL, buffer, size, OBD_MD_FLXATTRLS);
- if (rc < 0)
- GOTO(out, rc);
-
- if (buffer != NULL) {
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- char *xattr_name = buffer;
- int xlen, rem = rc;
-
- while (rem > 0) {
- xlen = strnlen(xattr_name, rem - 1) + 1;
- rem -= xlen;
- if (xattr_type_filter(sbi,
- get_xattr_type(xattr_name)) == 0) {
- /* skip OK xattr type
- * leave it in buffer
- */
- xattr_name += xlen;
- continue;
- }
- /* move up remaining xattrs in buffer
- * removing the xattr that is not OK
- */
- memmove(xattr_name, xattr_name + xlen, rem);
- rc -= xlen;
- }
- }
- if (S_ISREG(inode->i_mode)) {
- if (!ll_i2info(inode)->lli_has_smd)
- rc2 = -1;
- } else if (S_ISDIR(inode->i_mode)) {
- rc2 = ll_dir_getstripe(inode, (void **)&lmm, &lmmsize, &request,
- 0);
- }
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LISTXATTR, 1);
- if (rc2 < 0) {
- GOTO(out, rc2 = 0);
- } else if (S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode)) {
- const int prefix_len = sizeof(XATTR_LUSTRE_PREFIX) - 1;
- const size_t name_len = sizeof("lov") - 1;
- const size_t total_len = prefix_len + name_len + 1;
+ rc = ll_getxattr_common(inode, NULL, buf, buf_size, OBD_MD_FLXATTRLS);
+ if (rc < 0)
+ RETURN(rc);
- if (((rc + total_len) > size) && (buffer != NULL)) {
- ptlrpc_req_finished(request);
- return -ERANGE;
- }
+ /* If we're being called to get the size of the xattr list
+ * (buf_size == 0) then just assume that a lustre.lov xattr
+ * exists. */
+ if (buf_size == 0)
+ RETURN(rc + sizeof(XATTR_LUSTRE_LOV));
+
+ xattr_name = buf;
+ rem = rc;
- if (buffer != NULL) {
- buffer += rc;
- memcpy(buffer, XATTR_LUSTRE_PREFIX, prefix_len);
- memcpy(buffer + prefix_len, "lov", name_len);
- buffer[prefix_len + name_len] = '\0';
+ while (rem > 0) {
+ len = strnlen(xattr_name, rem - 1) + 1;
+ rem -= len;
+ if (xattr_type_filter(sbi, get_xattr_type(xattr_name)) == 0) {
+ /* Skip OK xattr type, leave it in buffer. */
+ xattr_name += len;
+ continue;
}
- rc2 = total_len;
+
+ /* Move up remaining xattrs in buffer removing the
+ * xattr that is not OK. */
+ memmove(xattr_name, xattr_name + len, rem);
+ rc -= len;
}
-out:
- ptlrpc_req_finished(request);
- rc = rc + rc2;
- return rc;
+ rc2 = ll_getxattr_lov(inode, NULL, 0);
+ if (rc2 == -ENODATA)
+ RETURN(rc);
+
+ if (rc2 < 0)
+ RETURN(rc2);
+
+ if (buf_size < rc + sizeof(XATTR_LUSTRE_LOV))
+ RETURN(-ERANGE);
+
+ memcpy(buf + rc, XATTR_LUSTRE_LOV, sizeof(XATTR_LUSTRE_LOV));
+
+ RETURN(rc + sizeof(XATTR_LUSTRE_LOV));
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff