* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2011, 2013, Intel Corporation.
+ * Copyright (c) 2011, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#include <linux/fs.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/xattr.h>
#include <linux/selinux.h>
#define DEBUG_SUBSYSTEM S_LLITE
#include <obd_support.h>
-#include <lustre_lite.h>
#include <lustre_dlm.h>
#include <lustre_ver.h>
#include <lustre_eacl.h>
#include "llite_internal.h"
+/* xattr related to IMA(Integrity Measurement Architecture) */
+#ifndef XATTR_NAME_IMA
+#define XATTR_NAME_IMA "security.ima"
+#endif
+#ifndef XATTR_NAME_EVM
+#define XATTR_NAME_EVM "security.evm"
+#endif
+
+#ifndef XATTR_NAME_POSIX_ACL_ACCESS
+# define XATTR_NAME_POSIX_ACL_ACCESS POSIX_ACL_XATTR_ACCESS
+#endif
+
+#ifndef XATTR_NAME_POSIX_ACL_DEFAULT
+# define XATTR_NAME_POSIX_ACL_DEFAULT POSIX_ACL_XATTR_DEFAULT
+#endif
+
#define XATTR_USER_T (1)
#define XATTR_TRUSTED_T (2)
#define XATTR_SECURITY_T (3)
static
int get_xattr_type(const char *name)
{
- if (!strcmp(name, POSIX_ACL_XATTR_ACCESS))
+ if (!strcmp(name, XATTR_NAME_POSIX_ACL_ACCESS))
return XATTR_ACL_ACCESS_T;
- if (!strcmp(name, POSIX_ACL_XATTR_DEFAULT))
+ if (!strcmp(name, XATTR_NAME_POSIX_ACL_DEFAULT))
return XATTR_ACL_DEFAULT_T;
if (!strncmp(name, XATTR_USER_PREFIX,
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
int xattr_type, rc;
- struct obd_capa *oc;
- posix_acl_xattr_header *new_value = NULL;
- struct rmtacl_ctl_entry *rce = NULL;
- ext_acl_xattr_header *acl = NULL;
const char *pv = value;
ENTRY;
+ /*FIXME: enable IMA when the conditions are ready */
+ if (strncmp(name, XATTR_NAME_IMA,
+ sizeof(XATTR_NAME_IMA)) == 0 ||
+ strncmp(name, XATTR_NAME_EVM,
+ sizeof(XATTR_NAME_EVM)) == 0)
+ return -EOPNOTSUPP;
+
xattr_type = get_xattr_type(name);
rc = xattr_type_filter(sbi, xattr_type);
if (rc)
#endif
return -EPERM;
- /* b10667: ignore lustre special xattr for now */
- if ((xattr_type == XATTR_TRUSTED_T && strcmp(name, "trusted.lov") == 0) ||
- (xattr_type == XATTR_LUSTRE_T && strcmp(name, "lustre.lov") == 0))
- RETURN(0);
+ /* b10667: ignore lustre special xattr for now */
+ if (strcmp(name, XATTR_NAME_HSM) == 0 ||
+ (xattr_type == XATTR_TRUSTED_T &&
+ strcmp(name, XATTR_NAME_LOV) == 0) ||
+ (xattr_type == XATTR_LUSTRE_T &&
+ strcmp(name, "lustre.lov") == 0))
+ RETURN(0);
/* b15587: ignore security.capability xattr for now */
if ((xattr_type == XATTR_SECURITY_T &&
strcmp(name, "security.selinux") == 0)
RETURN(-EOPNOTSUPP);
-#ifdef CONFIG_FS_POSIX_ACL
- if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
- (xattr_type == XATTR_ACL_ACCESS_T ||
- xattr_type == XATTR_ACL_DEFAULT_T)) {
- rce = rct_search(&sbi->ll_rct, current_pid());
- if (rce == NULL ||
- (rce->rce_ops != RMT_LSETFACL &&
- rce->rce_ops != RMT_RSETFACL))
- RETURN(-EOPNOTSUPP);
-
- if (rce->rce_ops == RMT_LSETFACL) {
- struct eacl_entry *ee;
-
- ee = et_search_del(&sbi->ll_et, current_pid(),
- ll_inode2fid(inode), xattr_type);
- LASSERT(ee != NULL);
- if (valid & OBD_MD_FLXATTR) {
- acl = lustre_acl_xattr_merge2ext(
- (posix_acl_xattr_header *)value,
- size, ee->ee_acl);
- if (IS_ERR(acl)) {
- ee_free(ee);
- RETURN(PTR_ERR(acl));
- }
- size = CFS_ACL_XATTR_SIZE(\
- le32_to_cpu(acl->a_count), \
- ext_acl_xattr);
- pv = (const char *)acl;
- }
- ee_free(ee);
- } else if (rce->rce_ops == RMT_RSETFACL) {
- int acl_size = lustre_posix_acl_xattr_filter(
- (posix_acl_xattr_header *)value,
- size, &new_value);
- if (unlikely(acl_size < 0))
- RETURN(acl_size);
- size = acl_size;
-
- pv = (const char *)new_value;
- } else
- RETURN(-EOPNOTSUPP);
-
- valid |= rce_ops2valid(rce->rce_ops);
- }
-#endif
- oc = ll_mdscapa_get(inode);
- rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
- valid, name, pv, size, 0, flags,
- ll_i2suppgid(inode), &req);
- capa_put(oc);
-#ifdef CONFIG_FS_POSIX_ACL
- if (new_value != NULL)
- lustre_posix_acl_xattr_free(new_value, size);
- if (acl != NULL)
- lustre_ext_acl_xattr_free(acl);
-#endif
+ rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode), valid, name, pv,
+ size, 0, flags, ll_i2suppgid(inode), &req);
if (rc) {
if (rc == -EOPNOTSUPP && xattr_type == XATTR_USER_T) {
LCONSOLE_INFO("Disabling user_xattr feature because "
RETURN(0);
}
+static int get_hsm_state(struct inode *inode, __u32 *hus_states)
+{
+ struct md_op_data *op_data;
+ struct hsm_user_state *hus;
+ int rc;
+
+ OBD_ALLOC_PTR(hus);
+ if (hus == NULL)
+ return -ENOMEM;
+
+ op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
+ LUSTRE_OPC_ANY, hus);
+ if (!IS_ERR(op_data)) {
+ rc = obd_iocontrol(LL_IOC_HSM_STATE_GET, ll_i2mdexp(inode),
+ sizeof(*op_data), op_data, NULL);
+ if (rc == 0)
+ *hus_states = hus->hus_states;
+ else
+ CDEBUG(D_VFSTRACE, "obd_iocontrol failed. rc = %d\n",
+ rc);
+
+ ll_finish_md_op_data(op_data);
+ } else {
+ rc = PTR_ERR(op_data);
+ CDEBUG(D_VFSTRACE, "Could not prepare the opdata. rc = %d\n",
+ rc);
+ }
+ OBD_FREE_PTR(hus);
+ return rc;
+}
+
int ll_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETXATTR, 1);
- 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_user_md *lump = (struct lov_user_md *)value;
- int rc = 0;
-
- /* Attributes that are saved via getxattr will always have
- * the stripe_offset as 0. Instead, the MDS should be
- * allowed to pick the starting OST index. b=17846 */
- if (lump != NULL && lump->lmm_stripe_offset == 0)
- lump->lmm_stripe_offset = -1;
+ 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_user_md *lump = (struct lov_user_md *)value;
+ int rc = 0;
+
+ /* Attributes that are saved via getxattr will always have
+ * the stripe_offset as 0. Instead, the MDS should be
+ * allowed to pick the starting OST index. b=17846 */
+ if (lump != NULL && lump->lmm_stripe_offset == 0)
+ lump->lmm_stripe_offset = -1;
+ /* Avoid anyone directly setting the RELEASED flag. */
+ if (lump != NULL &&
+ (lump->lmm_pattern & LOV_PATTERN_F_RELEASED)) {
+ /* Only if we have a released flag check if the file
+ * was indeed archived. */
+ __u32 state = HS_NONE;
+ rc = get_hsm_state(inode, &state);
+ if (rc != 0)
+ RETURN(rc);
+ if (!(state & HS_ARCHIVED)) {
+ CDEBUG(D_VFSTRACE,
+ "hus_states state = %x, pattern = %x\n",
+ state, lump->lmm_pattern);
+ /* Here the state is: real file is not
+ * archived but user is requesting to set
+ * the RELEASED flag so we mask off the
+ * released flag from the request */
+ lump->lmm_pattern ^= LOV_PATTERN_F_RELEASED;
+ }
+ }
if (lump != NULL && S_ISREG(inode->i_mode)) {
struct file f;
__u64 it_flags = FMODE_WRITE;
- int lum_size = (lump->lmm_magic == LOV_USER_MAGIC_V1) ?
- sizeof(*lump) : sizeof(struct lov_user_md_v3);
+ int lum_size;
+
+ lum_size = ll_lov_user_md_size(lump);
+ if (lum_size < 0 || size < lum_size)
+ return 0; /* b=10667: ignore error */
memset(&f, 0, sizeof(f)); /* f.f_flags is used below */
- f.f_dentry = dentry;
+ f.f_path.dentry = dentry;
rc = ll_lov_setstripe_ea_info(inode, &f, it_flags, lump,
lum_size);
- /* b10667: rc always be 0 here for now */
+ /* b=10667: rc always be 0 here for now */
rc = 0;
} else if (S_ISDIR(inode->i_mode)) {
rc = ll_dir_setstripe(inode, lump, 0);
OBD_MD_FLXATTRRM);
}
-static
int ll_getxattr_common(struct inode *inode, const char *name,
void *buffer, size_t size, __u64 valid)
{
struct mdt_body *body;
int xattr_type, rc;
void *xdata;
- struct obd_capa *oc;
- struct rmtacl_ctl_entry *rce = NULL;
struct ll_inode_info *lli = ll_i2info(inode);
ENTRY;
RETURN(-EOPNOTSUPP);
#ifdef CONFIG_FS_POSIX_ACL
- if (sbi->ll_flags & LL_SBI_RMT_CLIENT &&
- (xattr_type == XATTR_ACL_ACCESS_T ||
- xattr_type == XATTR_ACL_DEFAULT_T)) {
- rce = rct_search(&sbi->ll_rct, current_pid());
- if (rce == NULL ||
- (rce->rce_ops != RMT_LSETFACL &&
- rce->rce_ops != RMT_LGETFACL &&
- rce->rce_ops != RMT_RSETFACL &&
- rce->rce_ops != RMT_RGETFACL))
- RETURN(-EOPNOTSUPP);
- }
-
/* posix acl is under protection of LOOKUP lock. when calling to this,
* we just have path resolution to the target inode, so we have great
* chance that cached ACL is uptodate.
*/
- if (xattr_type == XATTR_ACL_ACCESS_T &&
- !(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
-
- struct posix_acl *acl;
+ if (xattr_type == XATTR_ACL_ACCESS_T) {
+ struct posix_acl *acl;
spin_lock(&lli->lli_lock);
acl = posix_acl_dup(lli->lli_posix_acl);
#endif
do_getxattr:
- if (sbi->ll_xattr_cache_enabled && xattr_type != XATTR_ACL_ACCESS_T) {
+ if (sbi->ll_xattr_cache_enabled &&
+ xattr_type != XATTR_ACL_ACCESS_T &&
+ (xattr_type != XATTR_SECURITY_T ||
+ strcmp(name, "security.selinux") != 0)) {
rc = ll_xattr_cache_get(inode, name, buffer, size, valid);
if (rc == -EAGAIN)
goto getxattr_nocache;
}
} else {
getxattr_nocache:
- oc = ll_mdscapa_get(inode);
- rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode), oc,
- valid | (rce ? rce_ops2valid(rce->rce_ops) : 0),
- name, NULL, 0, size, 0, &req);
- capa_put(oc);
+ rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode),
+ valid, name, NULL, 0, size, 0, &req);
if (rc < 0)
GOTO(out_xattr, rc);
rc = body->mbo_eadatasize;
}
-#ifdef CONFIG_FS_POSIX_ACL
- if (rce != NULL && rce->rce_ops == RMT_LSETFACL) {
- ext_acl_xattr_header *acl;
-
- acl = lustre_posix_acl_xattr_2ext(buffer, rc);
- if (IS_ERR(acl))
- GOTO(out, rc = PTR_ERR(acl));
-
- rc = ee_add(&sbi->ll_et, current_pid(), ll_inode2fid(inode),
- xattr_type, acl);
- if (unlikely(rc < 0)) {
- lustre_ext_acl_xattr_free(acl);
- GOTO(out, rc);
- }
- }
-#endif
EXIT;
out_xattr:
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,
+ };
+ __u16 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);
-
- 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);
- }
+ rc = cl.cl_size;
- 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);
- }
+ if (buf_size == 0)
+ GOTO(out_env, rc);
- 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;
+ LASSERT(buf != NULL && rc <= buf_size);
- rc = lmmsize;
-out:
- if (request)
- ptlrpc_req_finished(request);
- else if (lmm)
- obd_free_diskmd(ll_i2dtexp(inode), &lmm);
- return(rc);
- }
+ /* 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);
+
+ RETURN(rc);
+ } else if (S_ISDIR(inode->i_mode)) {
+ struct lov_mds_md *lmm = NULL;
+ int lmm_size = 0;
+ struct ptlrpc_request *req = NULL;
+
+ 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);
- return ll_getxattr_common(inode, name, buffer, size, OBD_MD_FLXATTR);
+ 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