1 files changed, 0 insertions, 638 deletions

diff --git a/drivers/staging/lustre/lustre/llite/xattr.c b/drivers/staging/lustre/lustre/llite/xattr.c
deleted file mode 100644
index 2d78432963dc..000000000000
--- a/drivers/staging/lustre/lustre/llite/xattr.c
+++ /dev/null
@@ -1,638 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * GPL HEADER START
- *
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 only,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License version 2 for more details (a copy is included
- * in the LICENSE file that accompanied this code).
- *
- * You should have received a copy of the GNU General Public License
- * version 2 along with this program; If not, see
- * http://www.gnu.org/licenses/gpl-2.0.html
- *
- * GPL HEADER END
- */
-/*
- * 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/
- * Lustre is a trademark of Sun Microsystems, Inc.
- */
-
-#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_dlm.h>
-
-#include "llite_internal.h"
-
-const struct xattr_handler *get_xattr_type(const char *name)
-{
-	int i = 0;
-
-	while (ll_xattr_handlers[i]) {
-		size_t len = strlen(ll_xattr_handlers[i]->prefix);
-
-		if (!strncmp(ll_xattr_handlers[i]->prefix, name, len))
-			return ll_xattr_handlers[i];
-		i++;
-	}
-	return NULL;
-}
-
-static int xattr_type_filter(struct ll_sb_info *sbi,
-			     const struct xattr_handler *handler)
-{
-	/* No handler means XATTR_OTHER_T */
-	if (!handler)
-		return -EOPNOTSUPP;
-
-	if ((handler->flags == XATTR_ACL_ACCESS_T ||
-	     handler->flags == XATTR_ACL_DEFAULT_T) &&
-	   !(sbi->ll_flags & LL_SBI_ACL))
-		return -EOPNOTSUPP;
-
-	if (handler->flags == XATTR_USER_T &&
-	    !(sbi->ll_flags & LL_SBI_USER_XATTR))
-		return -EOPNOTSUPP;
-
-	if (handler->flags == XATTR_TRUSTED_T &&
-	    !capable(CAP_SYS_ADMIN))
-		return -EPERM;
-
-	return 0;
-}
-
-static int
-ll_xattr_set_common(const struct xattr_handler *handler,
-		    struct dentry *dentry, struct inode *inode,
-		    const char *name, const void *value, size_t size,
-		    int flags)
-{
-	struct ll_sb_info *sbi = ll_i2sbi(inode);
-	struct ptlrpc_request *req = NULL;
-	const char *pv = value;
-	char *fullname;
-	__u64 valid;
-	int rc;
-
-	if (flags == XATTR_REPLACE) {
-		ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_REMOVEXATTR, 1);
-		valid = OBD_MD_FLXATTRRM;
-	} else {
-		ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETXATTR, 1);
-		valid = OBD_MD_FLXATTR;
-	}
-
-	rc = xattr_type_filter(sbi, handler);
-	if (rc)
-		return rc;
-
-	if ((handler->flags == XATTR_ACL_ACCESS_T ||
-	     handler->flags == XATTR_ACL_DEFAULT_T) &&
-	    !inode_owner_or_capable(inode))
-		return -EPERM;
-
-	/* b10667: ignore lustre special xattr for now */
-	if (!strcmp(name, "hsm") ||
-	    ((handler->flags == XATTR_TRUSTED_T && !strcmp(name, "lov")) ||
-	     (handler->flags == XATTR_LUSTRE_T && !strcmp(name, "lov"))))
-		return 0;
-
-	/* b15587: ignore security.capability xattr for now */
-	if ((handler->flags == XATTR_SECURITY_T &&
-	     !strcmp(name, "capability")))
-		return 0;
-
-	/* LU-549:  Disable security.selinux when selinux is disabled */
-	if (handler->flags == XATTR_SECURITY_T && !selinux_is_enabled() &&
-	    strcmp(name, "selinux") == 0)
-		return -EOPNOTSUPP;
-
-	/*FIXME: enable IMA when the conditions are ready */
-	if (handler->flags == XATTR_SECURITY_T &&
-	    (!strcmp(name, "ima") || !strcmp(name, "evm")))
-		return -EOPNOTSUPP;
-
-	/*
-	 * In user.* namespace, only regular files and directories can have
-	 * extended attributes.
-	 */
-	if (handler->flags == XATTR_USER_T) {
-		if (!S_ISREG(inode->i_mode) && !S_ISDIR(inode->i_mode))
-			return -EPERM;
-	}
-
-	fullname = kasprintf(GFP_KERNEL, "%s%s\n", handler->prefix, name);
-	if (!fullname)
-		return -ENOMEM;
-	rc = md_setxattr(sbi->ll_md_exp, ll_inode2fid(inode),
-			 valid, fullname, pv, size, 0, flags,
-			 ll_i2suppgid(inode), &req);
-	kfree(fullname);
-	if (rc) {
-		if (rc == -EOPNOTSUPP && handler->flags == 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;
-	}
-
-	ptlrpc_req_finished(req);
-	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;
-
-	hus = kzalloc(sizeof(*hus), GFP_NOFS);
-	if (!hus)
-		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)
-			*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);
-	}
-	kfree(hus);
-	return rc;
-}
-
-static int ll_xattr_set(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *inode,
-			const char *name, const void *value, size_t size,
-			int flags)
-{
-	LASSERT(inode);
-	LASSERT(name);
-
-	CDEBUG(D_VFSTRACE, "VFS Op:inode=" DFID "(%p), xattr %s\n",
-	       PFID(ll_inode2fid(inode)), inode, name);
-
-	if (!strcmp(name, "lov")) {
-		struct lov_user_md *lump = (struct lov_user_md *)value;
-		int op_type = flags == XATTR_REPLACE ? LPROC_LL_REMOVEXATTR :
-						       LPROC_LL_SETXATTR;
-		int rc = 0;
-
-		ll_stats_ops_tally(ll_i2sbi(inode), op_type, 1);
-
-		if (size != 0 && size < sizeof(struct lov_user_md))
-			return -EINVAL;
-
-		/*
-		 * It is possible to set an xattr to a "" value of zero size.
-		 * For this case we are going to treat it as a removal.
-		 */
-		if (!size && lump)
-			lump = NULL;
-
-		/* 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 && lump->lmm_stripe_offset == 0)
-			lump->lmm_stripe_offset = -1;
-
-		/* Avoid anyone directly setting the RELEASED flag. */
-		if (lump && (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)
-				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 && S_ISREG(inode->i_mode)) {
-			__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 */
-
-			rc = ll_lov_setstripe_ea_info(inode, dentry, 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);
-		}
-
-		return rc;
-
-	} else if (!strcmp(name, "lma") || !strcmp(name, "link")) {
-		ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_SETXATTR, 1);
-		return 0;
-	}
-
-	return ll_xattr_set_common(handler, dentry, inode, name, value, size,
-				   flags);
-}
-
-int
-ll_xattr_list(struct inode *inode, const char *name, int type, void *buffer,
-	      size_t size, __u64 valid)
-{
-	struct ll_inode_info *lli = ll_i2info(inode);
-	struct ll_sb_info *sbi = ll_i2sbi(inode);
-	struct ptlrpc_request *req = NULL;
-	struct mdt_body *body;
-	void *xdata;
-	int rc;
-
-	if (sbi->ll_xattr_cache_enabled && type != XATTR_ACL_ACCESS_T &&
-	    (type != XATTR_SECURITY_T || strcmp(name, "security.selinux"))) {
-		rc = ll_xattr_cache_get(inode, name, buffer, size, valid);
-		if (rc == -EAGAIN)
-			goto getxattr_nocache;
-		if (rc < 0)
-			goto out_xattr;
-
-		/* Add "system.posix_acl_access" to the list */
-		if (lli->lli_posix_acl && 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 {
-				rc = -ERANGE;
-				goto out_xattr;
-			}
-		}
-	} 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;
-
-		body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
-		LASSERT(body);
-
-		/* only detect the xattr size */
-		if (size == 0) {
-			rc = body->mbo_eadatasize;
-			goto out;
-		}
-
-		if (size < body->mbo_eadatasize) {
-			CERROR("server bug: replied size %u > %u\n",
-			       body->mbo_eadatasize, (int)size);
-			rc = -ERANGE;
-			goto out;
-		}
-
-		if (body->mbo_eadatasize == 0) {
-			rc = -ENODATA;
-			goto out;
-		}
-
-		/* do not need swab xattr data */
-		xdata = req_capsule_server_sized_get(&req->rq_pill, &RMF_EADATA,
-						     body->mbo_eadatasize);
-		if (!xdata) {
-			rc = -EFAULT;
-			goto out;
-		}
-
-		memcpy(buffer, xdata, body->mbo_eadatasize);
-		rc = body->mbo_eadatasize;
-	}
-
-out_xattr:
-	if (rc == -EOPNOTSUPP && 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;
-}
-
-static int ll_xattr_get_common(const struct xattr_handler *handler,
-			       struct dentry *dentry, struct inode *inode,
-			       const char *name, void *buffer, size_t size)
-{
-	struct ll_sb_info *sbi = ll_i2sbi(inode);
-#ifdef CONFIG_FS_POSIX_ACL
-	struct ll_inode_info *lli = ll_i2info(inode);
-#endif
-	char *fullname;
-	int rc;
-
-	CDEBUG(D_VFSTRACE, "VFS Op:inode=" DFID "(%p)\n",
-	       PFID(ll_inode2fid(inode)), inode);
-
-	ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1);
-
-	rc = xattr_type_filter(sbi, handler);
-	if (rc)
-		return rc;
-
-	/* b15587: ignore security.capability xattr for now */
-	if ((handler->flags == XATTR_SECURITY_T && !strcmp(name, "capability")))
-		return -ENODATA;
-
-	/* LU-549:  Disable security.selinux when selinux is disabled */
-	if (handler->flags == XATTR_SECURITY_T && !selinux_is_enabled() &&
-	    !strcmp(name, "selinux"))
-		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.
-	 */
-	if (handler->flags == 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);
-
-		if (!acl)
-			return -ENODATA;
-
-		rc = posix_acl_to_xattr(&init_user_ns, acl, buffer, size);
-		posix_acl_release(acl);
-		return rc;
-	}
-	if (handler->flags == XATTR_ACL_DEFAULT_T && !S_ISDIR(inode->i_mode))
-		return -ENODATA;
-#endif
-	fullname = kasprintf(GFP_KERNEL, "%s%s\n", handler->prefix, name);
-	if (!fullname)
-		return -ENOMEM;
-	rc = ll_xattr_list(inode, fullname, handler->flags, buffer, size,
-			   OBD_MD_FLXATTR);
-	kfree(fullname);
-	return rc;
-}
-
-static ssize_t ll_getxattr_lov(struct inode *inode, void *buf, size_t buf_size)
-{
-	ssize_t rc;
-
-	if (S_ISREG(inode->i_mode)) {
-		struct cl_object *obj = ll_i2info(inode)->lli_clob;
-		struct cl_layout cl = {
-			.cl_buf.lb_buf = buf,
-			.cl_buf.lb_len = buf_size,
-		};
-		struct lu_env *env;
-		u16 refcheck;
-
-		if (!obj)
-			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;
-
-		if (!cl.cl_size) {
-			rc = -ENODATA;
-			goto out_env;
-		}
-
-		rc = cl.cl_size;
-
-		if (!buf_size)
-			goto out_env;
-
-		LASSERT(buf && 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 ptlrpc_request *req = NULL;
-		struct lov_mds_md *lmm = NULL;
-		int lmm_size = 0;
-
-		rc = ll_dir_getstripe(inode, (void **)&lmm, &lmm_size,
-				      &req, 0);
-		if (rc < 0)
-			goto out_req;
-
-		if (!buf_size) {
-			rc = lmm_size;
-			goto out_req;
-		}
-
-		if (buf_size < lmm_size) {
-			rc = -ERANGE;
-			goto out_req;
-		}
-
-		memcpy(buf, lmm, lmm_size);
-		rc = lmm_size;
-out_req:
-		if (req)
-			ptlrpc_req_finished(req);
-
-		return rc;
-	} else {
-		return -ENODATA;
-	}
-}
-
-static int ll_xattr_get(const struct xattr_handler *handler,
-			struct dentry *dentry, struct inode *inode,
-			const char *name, void *buffer, size_t size)
-{
-	LASSERT(inode);
-	LASSERT(name);
-
-	CDEBUG(D_VFSTRACE, "VFS Op:inode=" DFID "(%p), xattr %s\n",
-	       PFID(ll_inode2fid(inode)), inode, name);
-
-	if (!strcmp(name, "lov")) {
-		ll_stats_ops_tally(ll_i2sbi(inode), LPROC_LL_GETXATTR, 1);
-
-		return ll_getxattr_lov(inode, buffer, size);
-	}
-
-	return ll_xattr_get_common(handler, dentry, inode, name, buffer, size);
-}
-
-ssize_t ll_listxattr(struct dentry *dentry, char *buffer, size_t size)
-{
-	struct inode *inode = d_inode(dentry);
-	struct ll_sb_info *sbi = ll_i2sbi(inode);
-	char *xattr_name;
-	ssize_t rc, rc2;
-	size_t len, rem;
-
-	LASSERT(inode);
-
-	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_xattr_list(inode, NULL, XATTR_OTHER_T, buffer, 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 (!size)
-		return rc + sizeof(XATTR_LUSTRE_LOV);
-
-	xattr_name = buffer;
-	rem = rc;
-
-	while (rem > 0) {
-		len = strnlen(xattr_name, rem - 1) + 1;
-		rem -= len;
-		if (!xattr_type_filter(sbi, get_xattr_type(xattr_name))) {
-			/* 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 (size < rc + sizeof(XATTR_LUSTRE_LOV))
-		return -ERANGE;
-
-	memcpy(buffer + rc, XATTR_LUSTRE_LOV, sizeof(XATTR_LUSTRE_LOV));
-
-	return rc + sizeof(XATTR_LUSTRE_LOV);
-}
-
-static const struct xattr_handler ll_user_xattr_handler = {
-	.prefix = XATTR_USER_PREFIX,
-	.flags = XATTR_USER_T,
-	.get = ll_xattr_get_common,
-	.set = ll_xattr_set_common,
-};
-
-static const struct xattr_handler ll_trusted_xattr_handler = {
-	.prefix = XATTR_TRUSTED_PREFIX,
-	.flags = XATTR_TRUSTED_T,
-	.get = ll_xattr_get,
-	.set = ll_xattr_set,
-};
-
-static const struct xattr_handler ll_security_xattr_handler = {
-	.prefix = XATTR_SECURITY_PREFIX,
-	.flags = XATTR_SECURITY_T,
-	.get = ll_xattr_get_common,
-	.set = ll_xattr_set_common,
-};
-
-static const struct xattr_handler ll_acl_access_xattr_handler = {
-	.prefix = XATTR_NAME_POSIX_ACL_ACCESS,
-	.flags = XATTR_ACL_ACCESS_T,
-	.get = ll_xattr_get_common,
-	.set = ll_xattr_set_common,
-};
-
-static const struct xattr_handler ll_acl_default_xattr_handler = {
-	.prefix = XATTR_NAME_POSIX_ACL_DEFAULT,
-	.flags = XATTR_ACL_DEFAULT_T,
-	.get = ll_xattr_get_common,
-	.set = ll_xattr_set_common,
-};
-
-static const struct xattr_handler ll_lustre_xattr_handler = {
-	.prefix = XATTR_LUSTRE_PREFIX,
-	.flags = XATTR_LUSTRE_T,
-	.get = ll_xattr_get,
-	.set = ll_xattr_set,
-};
-
-const struct xattr_handler *ll_xattr_handlers[] = {
-	&ll_user_xattr_handler,
-	&ll_trusted_xattr_handler,
-	&ll_security_xattr_handler,
-#ifdef CONFIG_FS_POSIX_ACL
-	&ll_acl_access_xattr_handler,
-	&ll_acl_default_xattr_handler,
-#endif
-	&ll_lustre_xattr_handler,
-	NULL,
-};