-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* GPL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
+ *
+ * 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/smp_lock.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_mdc.h>
-#include <lustre_acl.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,
static
int ll_setxattr_common(struct inode *inode, const char *name,
- const void *value, size_t size,
- int flags, __u64 valid)
+ const void *value, size_t size,
+ int flags, __u64 valid)
{
- struct ll_sb_info *sbi = ll_i2sbi(inode);
- struct ptlrpc_request *req;
+ 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)
RETURN(rc);
- /* 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))
+ if ((xattr_type == XATTR_ACL_ACCESS_T ||
+ xattr_type == XATTR_ACL_DEFAULT_T) &&
+#ifdef HAVE_INODE_OWNER_OR_CAPABLE
+ !inode_owner_or_capable(inode))
+#else
+ !is_owner_or_cap(inode))
+#endif
+ return -EPERM;
+
+ /* 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.capability") == 0))
RETURN(0);
-#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, cfs_curproc_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, cfs_curproc_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) {
- size = lustre_posix_acl_xattr_filter(
- (posix_acl_xattr_header *)value,
- size, &new_value);
- if (unlikely(size < 0))
- RETURN(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
+ /* LU-549: Disable security.selinux when selinux is disabled */
+ if (xattr_type == XATTR_SECURITY_T && !selinux_is_enabled() &&
+ strcmp(name, "security.selinux") == 0)
+ RETURN(-EOPNOTSUPP);
+
+ 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)
{
LASSERT(inode);
LASSERT(name);
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n",
- inode->i_ino, inode->i_generation, inode, 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_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;
-
- if (S_ISREG(inode->i_mode)) {
- struct file f;
- int flags = FMODE_WRITE;
-
- f.f_dentry = dentry;
- rc = ll_lov_setstripe_ea_info(inode, &f, flags,
- lump, sizeof(*lump));
- /* b10667: rc always be 0 here for now */
- rc = 0;
+ 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;
+
+ 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_path.dentry = dentry;
+ rc = ll_lov_setstripe_ea_info(inode, &f, it_flags, lump,
+ lum_size);
+ /* 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);
}
LASSERT(inode);
LASSERT(name);
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n",
- inode->i_ino, inode->i_generation, inode, 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_REMOVEXATTR, 1);
return ll_setxattr_common(inode, name, NULL, 0, 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;
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
- inode->i_ino, inode->i_generation, inode);
+ CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
+ PFID(ll_inode2fid(inode)), inode);
/* listxattr have slightly different behavior from of ext3:
* without 'user_xattr' ext3 will list all xattr names but
if (rc)
RETURN(rc);
-#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, cfs_curproc_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);
- }
-#endif
+ /* b15587: ignore security.capability xattr for now */
+ if ((xattr_type == XATTR_SECURITY_T &&
+ strcmp(name, "security.capability") == 0))
+ RETURN(-ENODATA);
+ /* LU-549: Disable security.selinux when selinux is disabled */
+ if (xattr_type == XATTR_SECURITY_T && !selinux_is_enabled() &&
+ strcmp(name, "security.selinux") == 0)
+ RETURN(-EOPNOTSUPP);
+
+#ifdef CONFIG_FS_POSIX_ACL
/* 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.
*/
-#ifdef CONFIG_FS_POSIX_ACL
- if (xattr_type == XATTR_ACL_ACCESS_T &&
- !(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
- struct ll_inode_info *lli = ll_i2info(inode);
- 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);
- spin_unlock(&lli->lli_lock);
+ spin_lock(&lli->lli_lock);
+ acl = posix_acl_dup(lli->lli_posix_acl);
+ spin_unlock(&lli->lli_lock);
if (!acl)
RETURN(-ENODATA);
- rc = posix_acl_to_xattr(acl, buffer, size);
+ rc = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
posix_acl_release(acl);
RETURN(rc);
}
#endif
do_getxattr:
- 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);
- if (rc) {
- if (rc == -EOPNOTSUPP && xattr_type == XATTR_USER_T) {
- LCONSOLE_INFO("Disabling user_xattr feature because "
- "it is not supported on the server\n");
- sbi->ll_flags &= ~LL_SBI_USER_XATTR;
- }
- RETURN(rc);
- }
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
- LASSERT(body);
-
- /* only detect the xattr size */
- if (size == 0)
- GOTO(out, rc = body->eadatasize);
-
- if (size < body->eadatasize) {
- CERROR("server bug: replied size %u > %u\n",
- body->eadatasize, (int)size);
- GOTO(out, rc = -ERANGE);
- }
-
- /* do not need swab xattr data */
- xdata = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA,
- body->eadatasize);
- if (!xdata)
- GOTO(out, rc = -EFAULT);
-
-#ifdef CONFIG_FS_POSIX_ACL
- if (body->eadatasize >= 0 && rce && rce->rce_ops == RMT_LSETFACL) {
- ext_acl_xattr_header *acl;
-
- acl = lustre_posix_acl_xattr_2ext((posix_acl_xattr_header *)xdata,
- body->eadatasize);
- if (IS_ERR(acl))
- GOTO(out, rc = PTR_ERR(acl));
-
- rc = ee_add(&sbi->ll_et, cfs_curproc_pid(), ll_inode2fid(inode),
- xattr_type, acl);
- if (unlikely(rc < 0)) {
- lustre_ext_acl_xattr_free(acl);
- GOTO(out, rc);
- }
- }
-
- if (xattr_type == XATTR_ACL_ACCESS_T && !body->eadatasize)
- GOTO(out, rc = -ENODATA);
-#endif
- LASSERT(buffer);
- memcpy(buffer, xdata, body->eadatasize);
- rc = body->eadatasize;
- EXIT;
+ 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;
+ if (rc < 0)
+ GOTO(out_xattr, rc);
+
+ /* Add "system.posix_acl_access" to the list */
+ if (lli->lli_posix_acl != NULL && valid & OBD_MD_FLXATTRLS) {
+ if (size == 0) {
+ rc += sizeof(XATTR_NAME_ACL_ACCESS);
+ } else if (size - rc >= sizeof(XATTR_NAME_ACL_ACCESS)) {
+ memcpy(buffer + rc, XATTR_NAME_ACL_ACCESS,
+ sizeof(XATTR_NAME_ACL_ACCESS));
+ rc += sizeof(XATTR_NAME_ACL_ACCESS);
+ } else {
+ GOTO(out_xattr, rc = -ERANGE);
+ }
+ }
+ } else {
+getxattr_nocache:
+ rc = md_getxattr(sbi->ll_md_exp, ll_inode2fid(inode),
+ valid, name, NULL, 0, size, 0, &req);
+
+ if (rc < 0)
+ GOTO(out_xattr, rc);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
+ LASSERT(body);
+
+ /* only detect the xattr size */
+ if (size == 0)
+ GOTO(out, rc = body->mbo_eadatasize);
+
+ if (size < body->mbo_eadatasize) {
+ CERROR("server bug: replied size %u > %u\n",
+ body->mbo_eadatasize, (int)size);
+ GOTO(out, rc = -ERANGE);
+ }
+
+ if (body->mbo_eadatasize == 0)
+ GOTO(out, rc = -ENODATA);
+
+ /* do not need swab xattr data */
+ xdata = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA,
+ body->mbo_eadatasize);
+ if (!xdata)
+ GOTO(out, rc = -EFAULT);
+
+ memcpy(buffer, xdata, body->mbo_eadatasize);
+ rc = body->mbo_eadatasize;
+ }
+
+ EXIT;
+
+out_xattr:
+ if (rc == -EOPNOTSUPP && xattr_type == XATTR_USER_T) {
+ LCONSOLE_INFO("%s: disabling user_xattr feature because "
+ "it is not supported on the server: rc = %d\n",
+ ll_get_fsname(inode->i_sb, NULL, 0), rc);
+ sbi->ll_flags &= ~LL_SBI_USER_XATTR;
+ }
out:
ptlrpc_req_finished(req);
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;
-
- LASSERT(inode);
- LASSERT(name);
-
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p), xattr %s\n",
- inode->i_ino, inode->i_generation, inode, name);
-
- 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_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)) {
- rc = ll_lov_getstripe_ea_info(dentry->d_parent->d_inode,
- dentry->d_name.name, &lmm,
- &lmmsize, &request);
- } else if (S_ISDIR(inode->i_mode)) {
- rc = ll_dir_getstripe(inode, &lmm, &lmmsize, &request);
- } else {
- rc = -ENODATA;
- }
-
- if (rc < 0)
- GOTO(out, rc);
- if (size == 0)
- GOTO(out, rc = lmmsize);
-
- 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);
- }
-
- lump = (struct lov_user_md *)buffer;
- memcpy(lump, lmm, lmmsize);
-
- rc = lmmsize;
-out:
- ptlrpc_req_finished(request);
- return(rc);
- }
-
- return ll_getxattr_common(inode, name, buffer, size, OBD_MD_FLXATTR);
+ ssize_t rc;
+
+ 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);
+
+ if (cl.cl_size == 0)
+ GOTO(out_env, rc = -ENODATA);
+
+ rc = cl.cl_size;
+
+ if (buf_size == 0)
+ GOTO(out_env, rc);
+
+ LASSERT(buf != NULL && rc <= buf_size);
+
+ /* 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);
+
+ 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;
-
- LASSERT(inode);
-
- CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n",
- inode->i_ino, inode->i_generation, inode);
+ struct inode *inode = dentry->d_inode;
- ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_LISTXATTR, 1);
+ LASSERT(inode);
+ LASSERT(name);
- rc = ll_getxattr_common(inode, NULL, buffer, size, OBD_MD_FLXATTRLS);
+ CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p), xattr %s\n",
+ PFID(ll_inode2fid(inode)), inode, name);
- if (S_ISREG(inode->i_mode)) {
- struct ll_inode_info *lli = ll_i2info(inode);
- struct lov_stripe_md *lsm = NULL;
- lsm = lli->lli_smd;
- if (lsm == NULL)
- rc2 = -1;
- } else if (S_ISDIR(inode->i_mode)) {
- rc2 = ll_dir_getstripe(inode, &lmm, &lmmsize, &request);
- }
+ ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1);
- if (rc2 < 0) {
- GOTO(out, rc2 = 0);
- } else {
- 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;
-
- if (buffer && (rc + total_len) <= size) {
- buffer += rc;
- memcpy(buffer,XATTR_LUSTRE_PREFIX, prefix_len);
- memcpy(buffer+prefix_len, "lov", name_len);
- buffer[prefix_len + name_len] = '\0';
- }
- rc2 = total_len;
- }
-out:
- ptlrpc_req_finished(request);
- rc = rc + rc2;
+ 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);
+}
- return rc;
+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, buf, buf_size, OBD_MD_FLXATTRLS);
+ if (rc < 0)
+ RETURN(rc);
+
+ /* 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;
+
+ 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;
+ }
+
+ /* Move up remaining xattrs in buffer removing the
+ * xattr that is not OK. */
+ memmove(xattr_name, xattr_name + len, rem);
+ rc -= len;
+ }
+
+ 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